CN217144832U - Plastic granulator head structure - Google Patents

Abstract

The application discloses a plastic granulator head structure which comprises a connecting plate and a discharging plate, wherein a first feeding hole, a trapezoidal feeding groove and a groove are formed in the connecting plate; be equipped with the shunt in the front side of play flitch, the upper and lower both sides of shunt are equipped with trapezoidal stock chest respectively, go out the flitch and have one side cooperation embedding connecting plate's of shunt recess in and connect fixedly, trapezoidal stock chest forms confined die cavity with trapezoidal feed chute butt joint. The ejection of compact board rear side is equipped with the ejection of compact face of downward sloping, is equipped with one row of upper strata discharge opening and one row of lower floor's discharge opening on the ejection of compact face, and upper strata discharge opening and lower floor's discharge opening are staggered interval arrangement in vertical direction to communicate with each other with the trapezoidal stock chest of shunt upper and lower both sides respectively. This application realizes flowing into the further plastify even that obtains of still not plasticized material in the die cavity through set up the shunt on a flitch, has seted up the air outlet on a flitch, in time cools off the material strip surface, better prevent that the material strip touches each other and bonds to the face of discharge opening on.

Description

Plastic granulator head structure

Technical Field

The application relates to an extrude granulator head structure, especially a plastic granulator head structure.

Background

The plastic brace granulator comprises an extruder, a machine head, a cooling system, a cutting machine and a packaging machine, wherein thermoplastic resin is sheared and conveyed through a screw rod after the extruder is heated to enable plastic melt to be changed into linear motion through the machine head by spiral motion, the plastic melt enters the machine head to be filled with a die cavity, the plastic melt is extruded from a discharge hole formed in a discharge plate under the action of pressure, and extruded strips are cooled and granulated to form required particle finished products. Because the formula system of the extruded grain-sized material consists of a plurality of materials and additives, the melt indexes of the materials are not necessarily the same or similar, when the molten material enters the die cavity and possibly contains plastic raw materials which are not plasticized yet and is stored in the die cavity of the machine head, the materials which are not plasticized yet are extruded from the discharge hole under the action of pressure, the surface of the extruded material strip is rough, the product quality is influenced, meanwhile, the material has quite high temperature when being extruded through the discharge hole, the material strips of the upper discharge hole and the lower discharge hole can touch and adhere to the plate surface of the discharge hole under the self-weight and deformation states of the material strip, although the prior art is provided with an inclined surface at the discharge hole of the discharge plate, the material strip is prevented from adhering to the plate surface of the discharge hole, a certain effect is achieved, in the actual production, because the temperature of the material strip is higher, the surface cannot be cooled in time, and the deformation of the extruded material strip is increased, meanwhile, the vertical distance between the water surface of the cooling water tank and the machine head is relatively short, the material strips fall on the water surface and float indefinitely, the operation method is careless, the material strips are easy to touch, adhere, stack together and adhere to the plate surface of the discharge hole, and therefore normal production is affected.

Therefore, the prior art has at least the following disadvantages:

1. the existing extrusion granulator head structure directly extrudes materials in a die cavity through a machine head, and after the materials containing unplasticized materials are extruded, the surface is rough, so that the product quality is influenced.

2. The existing structure of the extrusion granulator head cannot timely cool and stretch the extruded material strips with higher temperature, and the material strips still in a molten state are easily broken, so that the performance of the product is reduced.

3. The double-layer neck ring mold machine head of the existing extrusion granulator is provided with an upper layer extrusion hole and a lower layer extrusion hole at the inclined plane of a neck ring mold, so that the discharged materials cannot be touched and are bonded together. However, the temperature of the material strips is high, the surface of the material strips cannot be cooled in time, and the material strips are easily adhered to the plate surface of the discharge hole, so that the normal production is influenced.

Disclosure of Invention

To the above-mentioned technical problem that prior art exists, the aim at of this application provides a plastic granulator head structure, and this application further obtains the plastify evenly through set up the shunt on the play flitch and realize flowing into the material of the mould intracavity not yet plastify, simultaneously, for improving the material strip touch and the bonding problem, has seted up one air outlet on the play flitch, in time cools off the material strip surface, better prevent that the material strip from touching each other and bonding to the face of discharge opening on.

In order to achieve the purpose, the technical scheme of the application is as follows:

the utility model provides a first structure of plastic granulator, is including installing connecting plate and the play flitch on the extruder, and both sides are equipped with first feed inlet and recess respectively around the connecting plate, are equipped with trapezoidal feed chute between first feed inlet and the recess, and both sides are provided with upper feed inlet and bottom discharge gate respectively around the trapezoidal feed chute, and the upper feed inlet and the first feed inlet of trapezoidal feed chute communicate with each other. Be equipped with big stock chest in the front side of flitch, be equipped with the shunt in the big stock chest, the shunt separates big stock chest for two trapezoidal stock chests from top to bottom, and the flitch has one side cooperation embedding connecting plate of shunt and fixes through the screw connection in the recess, the bottom discharge mouth of trapezoidal feed chute with the peripheral size correspondence of the groove feed inlet of two trapezoidal stock chests front sides is connected and is constituted the die cavity at no dead angle.

The rear side of discharge plate is provided with the discharge surface of downward sloping, the upper end of discharge surface sets up the upper strata discharge opening that one row of horizontal interval set up, upper strata discharge opening communicates with each other with a trapezoidal stock chest that is located above the shunt, the lower extreme of discharge surface sets up the lower floor's discharge opening that one row of horizontal interval set up, lower floor's discharge opening communicates with each other with a trapezoidal stock chest that is located below the shunt, and upper strata discharge opening and lower floor's discharge opening staggered interval arrangement in vertical direction, upper strata discharge opening and lower floor's discharge opening are the equal slope of discharge opening downwards and are extruded the flitch. Along the connecting plate towards the horizontal direction of play flitch, the opening width of trapezoidal feed chute and two trapezoidal stock vats all dwindles gradually, and wherein, the length of shunt, trapezoidal feed chute and trapezoidal stock vats is the same.

Further, the discharging plate and the flow divider are of an integrated structure. The flow divider is a long strip triangle, and the included angle of two side edges of the head part of the flow divider is within 60 degrees, so that a material layer entering a die cavity is gradually thinned, further uniform plasticization is facilitated, and the product quality is improved. The head of the diverter extends out of the large storage tank, and when one side of the discharge plate with the diverter is matched and embedded into the groove of the connecting plate, the head of the diverter extends into the trapezoidal feed chute of the connecting plate.

Still further, the head of shunt sets up the fillet of being convenient for the feeding, and the diameter R of fillet is 0.5 ~ 2mm, and the diameter R of fillet should not be too big to avoid plastic melt to easily take place here to be detained and overheated decomposition.

Further, the discharging surface of the discharging plate is inclined inwards from top to bottom, and the inclined angle of the discharging surface and the vertical direction is 30-60 degrees.

Furthermore, trapezoidal stock chest is equipped with to the both sides of shunt, and its purpose is cushioned further and is obtained the plastify to the fuse-element.

Furthermore, a plurality of upper-layer extrusion holes which are correspondingly connected with the upper-layer discharge holes one by one are arranged at the bottom of a trapezoidal storage chute positioned above the flow divider, and an upper-layer extrusion channel inclined downwards is connected between the upper-layer extrusion holes and the upper-layer discharge holes; a plurality of lower floor that are connected with lower floor's discharge opening one-to-one are provided with to be located the trapezoidal stock chest bottom below the shunt and extrude the hole, and lower floor's discharge opening and lower floor are extruded and are connected with the lower floor that the slant declined and extrude the passageway between the hole. Therefore, when materials pass through the flow divider to be fed into the upper and lower trapezoidal material storage tanks, the materials can be extruded from the upper layer extrusion hole and the lower layer extrusion hole respectively.

Further, a lower air outlet plate is arranged below the discharging surface of the discharging plate, and the horizontal thickness of the lower air outlet plate is smaller than that of the discharging plate at the position of the discharging surface. The inside of lower part air-out board is opened along its length direction and is bored a darker thermal-insulated air-out counter bore, is equipped with the air outlet of slant tilt up on the thermal-insulated air-out counter bore, and the air outlet is a scarf, and this scarf is relative with the material strip direction that upper strata discharge opening and lower floor's discharge opening extruded, and the air outlet has certain inclination, plays certain support to the material strip and holds up and cool off, the better bonding that has prevented material strip and play the flitch. The length of air outlet is greater than the total length that all upper strata discharge opening and lower floor's discharge opening were arranged, that is to say, air outlet exhaust cold wind can cool off all material strips.

Furthermore, the width of the air outlet is 2-5mm, the air outlet is an oblique cut, the inclination of the cut is 15-30 degrees upwards, the oblique cut is opposite to the direction of the extruded material strips, cooling air can cool the surfaces of the material strips, and the cooled material strips are in a high elastic state, can be stretched and can be prevented from being bonded with the discharge plate.

Furthermore, a heat insulation blowpipe is installed in the heat insulation air outlet sinking hole in a matching mode, and the heat insulation blowpipe is made of heat-resistant polytetrafluoroethylene materials. An air outlet groove is formed in the side portion of the heat insulation blowing pipe, the width and the length of the air outlet groove are respectively the same as those of the air outlet, and the air outlet groove and the air outlet can be in matched butt joint; the center of one end of the heat insulation blowpipe is drilled with an air inlet hole which is communicated with the air outlet groove, and one end of the heat insulation blowpipe, which is drilled with the air inlet hole, penetrates out of the side part of the lower air outlet plate and is connected with the fan.

Furthermore, one end of the lower air outlet plate is provided with a small jack connected with the heat insulation air outlet counter bore, the small jack and the heat insulation air outlet counter bore penetrate through the inside of the whole lower air outlet plate, and the joint of the small jack and the heat insulation air outlet counter bore is a sinking platform. The one end of thermal-insulated blowing pipe is equipped with little intubate, and the handing-over department of little intubate and thermal-insulated blowing pipe is the boss, and the one end that thermal-insulated blowing pipe was kept away from to little intubate is equipped with the screw thread, and the one end that thermal-insulated blowing pipe kept away from little intubate is equipped with the screw thread and is provided with the square head at this end tip. The heat insulation blowpipe is sleeved in the heat insulation air outlet sunken hole, the small insertion pipe penetrates out of the small insertion hole to enable the boss to be tightly propped against the sinking platform, and one end of the small insertion pipe with threads and the heat insulation blowpipe are locked and fixed with two ends of the lower air outlet plate through the temperature-resistant gasket and the nut.

The beneficial effect that this application was got is:

1. through the shunt that sets up in one side of ejection of compact board, the bed of material thins gradually when making the plastics fuse-element pass through, has reduced the inside volume of die cavity and has increased the heated area of plastics, and the even heating of being convenient for makes it further even plastify.

2. The trapezoidal stock chest that the shunt both sides were equipped with makes the material steadily get into trapezoidal stock chest and cushions the heating to the fuse-element, further obtains the plastify. This application further sets up the hole is extruded on a plurality of upper strata that are connected with upper strata discharge opening one-to-one in the trapezoidal storage tank bottom portion that is located the shunt, and trapezoidal storage tank bottom portion that is located the shunt below is provided with the hole is extruded to a plurality of lower floors that are connected with lower floor discharge opening one-to-one, and the fuse-element produces necessary forming pressure through upper strata extrusion hole and lower floor extrusion hole, makes the material strip of extruding more closely knit, has promoted product quality.

3. The cooling device that matches through the thermal-insulated air-out counter bore that sets up and thermal-insulated blowing pipe connection constitutes plays certain support to high temperature material strip and holds up and cool off, blows to the material strip through the size of adjustment amount of wind and the angle of air outlet, and when high temperature material strip has the molten state to become high elastic state, makes the material strip obtain tensile promptly under cutting grain and pulling, improves product property and produces the performance, has prevented the bonding of material strip and play flitch again, improves production efficiency.

4. The heat insulation blowpipe is made of polytetrafluoroethylene high-temperature-resistant materials, and has good heat insulation effect on heat conduction of the heating of the machine head due to the fact that polytetrafluoroethylene has heat insulation and easy cleaning performance, the heat insulation is the temperature of the machine head, cold air flows out of the air outlet, and high-temperature material strips can be cooled in time.

Drawings

FIG. 1 is a front view of the present application;

FIG. 2 is a cross-sectional side view taken along line A-A of FIG. 1;

FIG. 3 is a schematic structural view of a discharge plate of the present application;

FIG. 4 is a cross-sectional side view of the take-off plate;

FIG. 5 is a schematic structural view of a connection plate according to the present application;

FIG. 6 is a cross-sectional side view of the connection plate;

fig. 7 is an enlarged cross-sectional view of a cross-sectional view of an insulated blowpipe of the present application;

the specific meanings of the symbols in the drawings are as follows:

1-a discharging plate; 2-a flow divider; 3-connecting the plates; 4-a trapezoidal feed chute; 5-a first feed port; 6-an upper feeding port; 7-a lower discharge hole; 8-groove feed inlet; 9-lower air outlet plate; 10-a groove; 11-a trapezoidal storage tank; 12-upper extrusion orifices; 13-upper layer discharge hole; 14-lower layer discharge hole; 15-lower extrusion orifices; 16-air outlet; 17-heat insulation air outlet counter bore; 18-an insulating blowpipe; 19-a screw; 20-bolt counter bores; 21-temperature resistant gasket; 22-a nut; 23-sinking a platform; 24-a boss; 25-air outlet groove; 26-air inlet holes; 27-threads; 28-square head.

Detailed Description

The present invention is further illustrated by the following examples, which should not be construed as limiting the scope of the invention.

Example (b):

the utility model provides a first structure of plastic granulator, combines to show in the attached figure 1-7, including installing connecting plate 3 and play flitch 1 on the extruder, both sides are equipped with first feed inlet 5 and recess 10 respectively around the connecting plate 3, are equipped with trapezoidal feed chute 4 between first feed inlet 5 and the recess 10, and both sides are provided with last feed inlet 6 and lower discharge gate 7 respectively around trapezoidal feed chute 4, and last feed inlet 6 and the first feed inlet 5 of trapezoidal feed chute 4 communicate with each other. In comparison with fig. 2, one side of the connecting plate 3 is provided with a bolt counter bore 20, and a mounting bolt in the bolt counter bore 20 is matched and fixedly connected with a connecting device of the extruder.

Be equipped with big stock chest in the front side of play flitch 1, be equipped with shunt 2 in the big stock chest, shunt 2 separates big stock chest for two upper and lower trapezoidal stock chests 11, and in the comparison figure 2, two trapezoidal stock chests 11 front sides are equipped with groove feed inlet 8 respectively. One surface of the discharge plate 1 with the flow divider 2 is matched and embedded into the groove 10 of the connecting plate 3 and is fixedly connected through a screw 19, and the groove feed inlets 8 at the front sides of the two trapezoidal storage grooves 11 are in butt joint with the lower discharge outlet 7 of the trapezoidal feed groove 4 to form a die cavity with corresponding peripheral size and no dead angle.

The rear side of flitch 1 is provided with the discharge surface of downward sloping, and the upper end of discharge surface sets up the upper strata discharge opening 13 that one row of horizontal interval set up, and upper strata discharge opening 13 communicates with each other with a trapezoidal stock chest 11 that is located shunt 2 above, and the lower extreme of discharge surface sets up the lower floor's discharge opening 14 that one row of horizontal interval set up, and lower floor's discharge opening 14 communicates with each other with a trapezoidal stock chest 11 that is located shunt 2 below, and upper strata discharge opening 13 and lower floor's discharge opening 14 crisscross interval arrangement in vertical direction, the material strip is extruded downwards to upper strata discharge opening 13 and lower floor's discharge opening 14 homocline. Along the connecting plate 3 towards the horizontal direction of play flitch 1, the opening width of trapezoidal feed chute 4 and two trapezoidal stock vats 11 all dwindles gradually.

In a comparison graph of fig. 2 and fig. 4, the flow divider 2 is a long triangle, the included angle between the two side edges of the head of the flow divider 2 is within 60 degrees, the head of the flow divider 2 extends out of the large storage tank, and when the side of the discharging plate 1 with the flow divider 2 is matched and embedded into the groove 10 of the connecting plate 3, the head of the flow divider 2 extends into the trapezoidal feeding groove 4 of the connecting plate 3; wherein, the length of the flow divider 2, the length of the trapezoidal feed chute 4 and the length of the trapezoidal stock chest 11 are the same.

Further, the head of the flow divider 2 is provided with a fillet which is convenient for feeding, and the diameter R of the fillet is 0.5-2 mm; the discharging plate 1 and the flow divider 2 are of an integral structure.

Further, the discharging surface of the discharging plate 1 is inclined inwards from top to bottom, and the inclined angle of the discharging surface and the vertical direction is 30-60 degrees.

Furthermore, a plurality of upper-layer extrusion holes 12 which are correspondingly connected with the upper-layer discharge holes 13 one by one are arranged at the bottom of a trapezoidal stock chest 11 positioned above the flow divider 2, and an upper-layer extrusion channel inclined downwards is connected between the upper-layer extrusion holes 12 and the upper-layer discharge holes 13; the bottom of a trapezoidal stock chest 11 below the shunt 2 is provided with a plurality of lower floor extrusion holes 15 that are connected with lower floor discharge hole 14 one-to-one, and the lower floor extrusion channel that inclines down is connected with between lower floor discharge hole 14 and the lower floor extrusion hole 15.

In comparison with fig. 2, a lower air outlet plate 9 is arranged below the discharging surface of the discharging plate 1, and the horizontal thickness of the lower air outlet plate 9 is smaller than that of the discharging plate 1 at the position of the discharging surface.

The inside of lower part air-out board 9 is opened along its length direction and is bored a thermal-insulated air-out counter bore 17 (be equipped with a darker thermal-insulated air-out counter bore 17 in the thickness of both ends about lower part air-out board 9 promptly), is equipped with an air outlet 16 that slopes to the upper side on the thermal-insulated air-out counter bore 17, and the air outlet is a scarf, and the width of air outlet 16 is 2-5mm, the incision inclination of scarf upwards is 15-30, and this scarf is relative with the material strip direction that upper strata discharge opening 13 and lower floor's discharge opening 14 extruded, and the length of air outlet 16 is greater than the total length that all upper strata discharge opening 13 and lower floor's discharge opening 14 were arranged to the cold wind that can blow up the cooling to all material strips that extrude through the discharge surface of discharge board 1 from air outlet 16.

The heat insulation blowpipe 18 is installed in the heat insulation air outlet counter bore 17 in a matched mode, an air outlet groove 25 is formed in the side portion of the heat insulation blowpipe 18, the width and the length of the air outlet groove 25 are respectively the same as those of the air outlet 16, and the air outlet groove 25 and the air outlet 16 can be in matched butt joint. An air inlet hole 26 is drilled in the center of one end of the heat insulation blowpipe 18, the air inlet hole 26 is communicated with the air outlet groove 25, and one end of the heat insulation blowpipe 18, which is drilled with the air inlet hole 26, penetrates out of the side part of the lower air outlet plate 9 and is connected with a fan.

In comparison with fig. 1 and 7, one end of the lower air-out plate 9 is provided with a small jack connected with the heat-insulating air-out counter bore 17, the small jack and the heat-insulating air-out counter bore 17 penetrate through the inside of the whole lower air-out plate 9, and a sinking platform 23 is arranged at the joint of the small jack and the heat-insulating air-out counter bore 17. Correspondingly, one end of the heat insulation blowpipe 18 is provided with a small insertion pipe, a boss 24 is arranged at the joint of the small insertion pipe and the heat insulation blowpipe 18, one end of the small insertion pipe, far away from the heat insulation blowpipe 18, is provided with a thread 27, and the end part of the heat insulation blowpipe 18, far away from the small insertion pipe, is provided with a square head 28;

when the heat insulation blowpipe 18 is sleeved in the heat insulation air outlet counter bore 17, the small insertion pipe penetrates out of the small insertion hole to enable the boss 24 to be matched and tightly propped against the sinking platform 23, and the end with the thread of the small insertion pipe and the end with the thread of the heat insulation blowpipe 18 are locked and fixed with the two ends of the lower air outlet plate 9 through the temperature-resistant gasket 21 and the nut 22. In the comparison figure 1, the small insertion tube penetrates out of the small insertion hole of the lower air outlet plate 9, a temperature-resistant gasket 21 for sealing and a nut 22 for locking are installed on the thread of the small insertion tube, and the temperature-resistant gasket 21 on the small insertion tube is tightly attached to the left side wall of the lower air outlet plate 9. Similarly, a temperature-resistant gasket 21 for sealing and a nut 22 for locking are mounted on the thread at the right end of the heat-insulating blowpipe 18, and the temperature-resistant gasket 21 at the right end of the heat-insulating blowpipe 18 is tightly attached to the right side wall of the lower air-out plate 9.

The specific working process and principle of the application are as follows:

one end of a first feeding hole 5 arranged on the connecting plate 3 is matched with the peripheral size of a discharge hole connecting device of the extruder and is fixedly connected with the discharge hole connecting device through a bolt counter bore 20 by a bolt. A trapezoid feeding groove 4 is formed in the inner side of a first feeding hole 5 of the connecting plate 3, and a lower discharging hole 7 of the trapezoid feeding groove 4 is in butt joint with groove feeding holes 8 in the front sides of two trapezoid storage grooves 11 to form a die cavity with corresponding peripheral size and no dead angle. Meanwhile, the rear side of the connecting plate 3 is provided with a groove 10, one side of the discharging plate 1 provided with the flow divider 2 is correspondingly clamped into the groove 10, and then is fixedly connected through a screw 19, the flow divider 2 is positioned in the middle of the trapezoid feeding groove 4 and the trapezoid storing groove 11 after connection, materials are divided into an upper trapezoid storing groove 11 and a lower trapezoid storing groove 11 after passing through the flow divider, and then are extruded when the upper layer extruding hole 12 and the lower layer extruding hole 15 are extruded, so that the upper layer discharging hole 13 and the lower layer discharging hole 14 on the inclined surface are extruded, the upper layer extruding hole 12 is higher than the upper layer discharging hole 13 and is correspondingly communicated with the upper layer discharging hole, a channel communicated between the upper layer extruding hole 12 and the upper layer discharging hole 13 has a certain inclination, the lower layer extruding hole 15 is higher than the lower layer discharging hole 14 and is correspondingly communicated with the lower layer discharging hole, and a channel communicated between the upper layer extruding hole and the lower layer discharging hole 14 also has a certain inclination. A deeper heat insulation air outlet counter bore 17 is arranged in the thickness of the left end and the right end of the lower air outlet plate 9, the heat insulation air outlet counter bore 17 is communicated with the air outlet 16 and forms a certain upward inclination, meanwhile, a sunk platform 23 is arranged in an inner hole of one end of the heat insulation air outlet counter bore 17, when the heat insulation air blowing pipe 18 is sleeved in the inner hole of the heat insulation air outlet counter bore 17, the sunk platform 23 is just blocked by a boss 24, at the moment, an air outlet groove 25 formed in the heat insulation air blowing pipe 18 corresponds to the width and the length of the air outlet 16, then, the positions of the air outlet groove 25 and the air outlet 16 are adjusted through a square head 28 at one end of the heat insulation air blowing pipe 18, namely, the heat insulation air blowing pipe 18 is rotated until the air outlet groove 25 is matched and butted with the air outlet 16 through stirring the square head 28, and after adjustment, temperature-resistant gaskets 21 are sleeved on the threads 27 arranged at the two ends of the heat insulation air blowing pipe 18 and are connected and fixed through nuts 22.

In the description of the present invention, it should be understood that the terms "upper layer", "lower layer", "bottom", "one end", "card-in", "middle part", "other end", "upper", "lower", "one side", "lower part", "another side", "both ends", "through", "cross", "correspond to", "periphery", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise specified or limited, the terms "disposed," connected, "" fixed, "" adjusted, "" stretched, "and the like are to be understood in a broad sense, and may be, for example, fixedly connected or integrated, and may be directly connected, for example, by adjusting" angle, "stretching" may stretch the molecular orientation to improve the product performance, and unless otherwise specified, the specific meaning of the above terms in the present invention may be understood by those skilled in the art according to specific circumstances.

The statements in this specification merely set forth a list of implementations of the inventive concept and the scope of the present invention should not be construed as limited to the particular forms set forth in the examples.

Claims (10)

1. A plastic granulator head structure is characterized in that: the extruder comprises a connecting plate (3) and a discharging plate (1) which are arranged on an extruder, wherein a first feeding hole (5) and a groove (10) are respectively formed in the front side and the rear side of the connecting plate (3), and a trapezoidal feeding groove (4) is formed between the first feeding hole (5) and the groove (10); a large storage trough is arranged in the front side of the discharging plate (1), a flow divider (2) is arranged in the large storage trough, the flow divider (2) divides the large storage trough into an upper trapezoidal storage trough and a lower trapezoidal storage trough (11), one surface of the discharging plate (1) with the flow divider (2) is matched and embedded into a groove (10) of the connecting plate (3) and is fixedly connected through a screw (19), a trough feeding port (8) in the front side of the two trapezoidal storage troughs (11) is butted with a lower discharging port (7) of the trapezoidal feeding trough (4) to form a closed die cavity, and an upper feeding port (6) of the trapezoidal feeding trough (4) is communicated with the first feeding port (5);

the rear side of the discharge plate (1) is provided with a downward-inclined discharge surface, the upper end of the discharge surface is provided with a row of upper-layer discharge holes (13) horizontally arranged at intervals, the upper-layer discharge holes (13) are communicated with a trapezoidal storage tank (11) positioned above the flow divider (2), the lower end of the discharge surface is provided with a row of lower-layer discharge holes (14) horizontally arranged at intervals, the lower-layer discharge holes (14) are communicated with a trapezoidal storage tank (11) positioned below the flow divider (2), the upper-layer discharge holes (13) and the lower-layer discharge holes (14) are arranged in a staggered and spaced mode in the vertical direction, and the upper-layer discharge holes (13) and the lower-layer discharge holes (14) are inclined downwards to extrude strips;

along connecting plate (3) towards the horizontal direction of play flitch (1), the opening width of trapezoidal feed chute (4) and two trapezoidal stock chest (11) all dwindles gradually.

2. A plastics granulator head structure as claimed in claim 1, in which: the flow divider (2) is in a long strip triangle shape, the included angle of two side edges of the head of the flow divider (2) is within 60 degrees, the head of the flow divider (2) extends out of the large storage tank, and when one surface of the discharge plate (1) with the flow divider (2) is matched and embedded into the groove (10) of the connecting plate (3), the head of the flow divider (2) extends into the trapezoidal feed tank (4) of the connecting plate (3); wherein, the length of the flow divider (2), the length of the trapezoidal feed chute (4) and the length of the trapezoidal storage chute (11) are the same.

3. A plastics granulator head structure as claimed in claim 2, in which: the head of the flow divider (2) is provided with a fillet convenient for feeding, and the diameter R of the fillet is 0.5-2 mm; the discharging plate (1) and the flow divider (2) are of an integrated structure.

4. A plastics granulator head structure as claimed in claim 1, in which: the discharging surface of the discharging plate (1) is inclined inwards from top to bottom, and the inclined angle between the discharging surface and the vertical direction is 30-60 degrees.

5. A plastics granulator head structure as claimed in claim 1, in which: the bottom of a trapezoidal storage tank (11) positioned above the flow divider (2) is provided with a plurality of upper-layer extrusion holes (12) which are correspondingly connected with the upper-layer discharge holes (13) one by one, and an upper-layer extrusion channel inclined downwards is connected between the upper-layer extrusion holes (12) and the upper-layer discharge holes (13); a plurality of lower-layer extrusion holes (15) which are connected with the lower-layer discharge holes (14) in a one-to-one correspondence mode are formed in the bottom of a trapezoidal storage chute (11) located below the flow divider (2), and a lower-layer extrusion channel inclined downwards is connected between the lower-layer discharge holes (14) and the lower-layer extrusion holes (15).

6. A plastics granulator head structure as claimed in claim 1, in which: a lower air outlet plate (9) is arranged below the discharge surface of the discharge plate (1), a heat insulation air outlet counter bore (17) is drilled in the lower air outlet plate (9) along the length direction of the lower air outlet plate, an air outlet (16) inclined upwards is formed in the heat insulation air outlet counter bore (17), the air outlet is an inclined cut, the inclined cut is opposite to the direction of strips extruded from the upper-layer discharge hole (13) and the lower-layer discharge hole (14), the length of the air outlet (16) is greater than the total length of all the upper-layer discharge hole (13) and the lower-layer discharge hole (14) in an arrangement mode, so that cold air discharged from the air outlet (16) can blow and cool all the strips extruded from the discharge surface of the discharge plate (1); the horizontal thickness of the lower air outlet plate (9) is smaller than that of the discharging plate (1) at the position of the discharging surface.

7. A plastics granulator head structure as claimed in claim 6, in which: the width of the air outlet (16) is 2-5mm, and the cut inclination of the inclined cut is 15-30 degrees upwards.

8. A plastics granulator head structure as claimed in claim 6, in which: the heat-insulation blowpipe (18) is installed in the heat-insulation air outlet counter bore (17) in a matching manner, an air outlet groove (25) is formed in the side part of the heat-insulation blowpipe (18), the width and the length of the air outlet groove (25) are respectively identical to those of the air outlet (16), and the air outlet groove (25) and the air outlet (16) can be in butt joint in a matching manner; wherein, an air inlet hole (26) is drilled at the center of one end of the heat insulation blowpipe (18), the air inlet hole (26) is communicated with the air outlet groove (25), and one end of the heat insulation blowpipe (18) drilled with the air inlet hole (26) penetrates out of the side part of the lower air outlet plate (9) and is connected with the fan.

9. A plastics granulator head structure as claimed in claim 8, in which: one end of the lower air outlet plate (9) is provided with a small jack connected with the heat insulation air outlet counter bore (17), the small jack and the heat insulation air outlet counter bore (17) penetrate through the inside of the whole lower air outlet plate (9), and a sinking platform (23) is arranged at the joint of the small jack and the heat insulation air outlet counter bore (17);

a small insertion pipe is arranged at one end of the heat insulation blowpipe (18), a boss (24) is arranged at the joint of the small insertion pipe and the heat insulation blowpipe (18), a thread is arranged at one end of the small insertion pipe, which is far away from the heat insulation blowpipe (18), a thread is arranged at one end of the heat insulation blowpipe (18), which is far away from the small insertion pipe, and a square head (28) is arranged at the end part of the end;

the heat insulation blowpipe (18) is sleeved in the heat insulation air outlet counter bore (17), the small insertion pipe penetrates out of the small insertion hole to enable the boss (24) to be tightly propped against the counter sink (23), and the end of the small insertion pipe with the threads and the heat insulation blowpipe (18) are locked and fixed with the two ends of the lower air outlet plate (9) through a temperature resistant gasket (21) and a nut (22).

10. A plastics granulator head structure as claimed in claim 8, in which: the heat insulation blowpipe (18) is made of heat-resistant polytetrafluoroethylene material.

Images