CN110239051B - Double-layer six-machine-head plastic extruder - Google Patents

Double-layer six-machine-head plastic extruder Download PDF

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Publication number
CN110239051B
CN110239051B CN201910510922.XA CN201910510922A CN110239051B CN 110239051 B CN110239051 B CN 110239051B CN 201910510922 A CN201910510922 A CN 201910510922A CN 110239051 B CN110239051 B CN 110239051B
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China
Prior art keywords
plate
layer
rubber
machine head
linkage
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CN201910510922.XA
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CN110239051A (en
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陈镜华
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KAIPING AKEI PLASTIC MACHINERY MOLD FACTORY
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KAIPING AKEI PLASTIC MACHINERY MOLD FACTORY
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Publication of CN110239051A publication Critical patent/CN110239051A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92647—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature

Abstract

The invention discloses a double-layer six-head plastic extruder, which adopts double-layer plastic feeding and a six-head structure and can synchronously extrude six plastic rubber blanks; the thickness regulating structure of the servo oil cylinder product is adopted, the corresponding linkage plate and the thickness regulating screw rod can be stably and smoothly driven to do linear reciprocating motion, each machine head of the plastic extruder has an independent temperature control function, and the temperature control of at least 25 sections of temperature is realized, so that the temperature accuracy and the melting uniformity of each layer are ensured. The molten plastics which enter the inner-layer splitter plate and the outer-layer splitter plate through shunting pass through the glue passing flow channel of the shunting comb and the inner and outer ring structures of the positioning ring to achieve uniform thickness of the plastic glue blank; in addition, the blowing seat can apply high pressure to molten plastic and extrusion, so that the plastic rubber blank is filled with high-pressure gas and the appearance of the product is kept to be extruded and reach the cavity of the blow molding die; the inner layer adjusting rod and the outer layer adjusting rod can adjust the flow of the symmetrical molten plastic entering the flow distribution plate, so that the flow control of the molten plastic entering the main flow rubber channel is facilitated, and the operation is facilitated.

Description

Double-layer six-machine-head plastic extruder
Technical Field
The invention relates to the technical field of blow molding extruders, in particular to a double-layer six-head plastic extruder capable of realizing a double-layer structure and synchronously extruding rubber blanks with uniform thickness by a six-cavity die head.
Background
The machine head of the plastic extruder is a key part for molding products in plastic processing and is used for meeting the requirement of product molding in a plastic extrusion process, the screw type plastic extruder is a common extrusion device, the screw type plastic extruder can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by rotation of a screw, then extrudes a material blank through a die, finally, the material blank is subjected to closed blow molding in a die cavity, and the product is obtained after cooling and shaping.
The traditional plastic extruder only depends on screw extrusion without other adjusting structures during internal extrusion at present, and for multilayer plastic rubber blanks, the thickness of the plastic rubber blanks cannot be packaged uniformly, so that the product is unstable and the like; in addition, the thickness of the plastic rubber blank can not be adjusted rapidly in real time, and the flexibility and the convenience are insufficient; the flow regulation of the plastic melting feeding cannot be conveniently regulated in real time, and the effect of convenient operation is not achieved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a double-layer six-handpiece plastic extruder, which adopts a double-layer plastic feeding and six-handpiece structure and can synchronously extrude six plastic rubber blanks; the servo oil cylinder is used as a product thickness regulating and controlling structure, the corresponding linkage plate and the thickness regulating screw rod can be stably and smoothly driven to do linear reciprocating motion, each machine head of the plastic extruder has an independent temperature control function, and the temperature control of at least 25 sections of temperature is realized, so that the temperature accuracy and the uniformity of melting of each layer are ensured. The molten plastics which enter the inner-layer splitter plate and the outer-layer splitter plate through shunting pass through the glue passing flow channel of the shunting comb and the inner and outer ring structures of the positioning ring to achieve uniform thickness of the plastic glue blank; in addition, the blowing seat can apply high pressure to molten plastic and extrusion, so that the plastic rubber blank is filled with high-pressure gas and the appearance of the product is kept to be extruded and reach the cavity of the blow molding die; the inner layer adjusting rod and the outer layer adjusting rod can adjust the flow of the symmetrical molten plastic entering the flow distribution plate, so that the flow control of the molten plastic entering the main flow rubber channel is facilitated, and the operation is facilitated. The plastic extruder is suitable for use with PE as plastic material.
The technical scheme adopted by the invention for solving the technical problems is as follows: a plastic extruder with six double-layer machine heads comprises a splitter plate assembly consisting of an outer splitter plate and an inner splitter plate, an outer feeding pipe connected and communicated with the outer splitter plate, an inner feeding pipe connected and communicated with the inner splitter plate, a linkage rod penetrating through the splitter plate assembly from top to bottom and fixedly arranged with the splitter plate assembly, a supporting plate and a linkage rod connecting plate arranged at the upper end of the linkage rod, rubber drawing head bottom plate pillars arranged at the four corners of the supporting plate, a linkage plate penetrated through and matched with the rubber drawing head bottom plate pillars, a rubber drawing head bottom plate connected and arranged at the top of the rubber drawing head bottom plate pillars, a servo oil cylinder arranged on the rubber drawing head bottom plate, a first rubber drawing head connecting nut and a first rubber drawing head connecting nut arranged at the power output end of the servo oil cylinder, a second rubber drawing head connecting nut fixedly connected and linked with the linkage plate and tightly sleeved on the first rubber drawing head connecting nut, a second rubber drawing head connecting nut tightly sleeved on the outer side of the first rubber drawing head connecting nut, a second rubber drawing, A linkage plate guide core arranged at the bottom of the rubber drawing head bottom plate, a linkage plate guide sleeve arranged on the linkage plate and matched with the linkage plate guide core, an oil-containing copper sleeve and a copper sleeve pressing plate arranged between the top of the rubber drawing head bottom plate support and the rubber drawing head bottom plate for realizing linkage of the rubber drawing head bottom plate and the linkage plate, six thickness adjusting screws which are uniformly distributed and linked with the linkage plate, six first machine head bodies arranged at the lower end of the linkage rod, six second machine head bodies correspondingly arranged and spliced with the bottom of the first machine head bodies, six third machine head bodies correspondingly arranged and connected with the bottom of the second machine head bodies, a shunt comb arranged in the first machine head bodies and the second machine head bodies and used for forming rubber blanks into uniform thickness, a positioning ring arranged in the first machine head bodies and correspondingly arranged with the shunt comb and provided with an inner and outer ring mechanism, an air blowing fixing block arranged at the back of the second machine head bodies, and a machine head core arranged between the second machine head, The outer-layer core sleeve is arranged on the outer side of the machine head core, the thickness adjusting sliding core is arranged in the third machine head body, a machine head body gland is arranged at the bottom of the third machine head body, a sliding sleeve seat is arranged at the bottom of the third machine head body gland in a matched mode, a thickness adjusting sliding sleeve is arranged through the sliding sleeve seat and matched with the thickness adjusting sliding core in a matched mode, a neck mold adjusting seat is arranged at the bottom of the sliding sleeve seat in a fixed mode and is penetrated by the thickness adjusting sliding sleeve, a neck mold cup core is arranged corresponding to the thickness adjusting sliding sleeve in a matched mode, a neck mold pressing plate is arranged on the outer side of the neck mold cup core and matched with the neck mold adjusting seat, and a; the top of the outer-layer splitter plate is provided with an outer-layer adjusting rod, an outer-layer adjusting rod sliding block is arranged outside the outer-layer adjusting rod, and a first outer-layer adjusting rod pressing cover and a second outer-layer adjusting rod pressing cover are sequentially arranged at the top of the outer-layer adjusting rod; the back of the inner layer flow distribution plate is provided with an inner layer adjusting rod, an inner layer adjusting rod sliding block is arranged on the outer side of the inner layer adjusting rod, the inner layer adjusting rod is installed on an inner layer adjusting rod seat, and the inner layer adjusting rod seat and the inner layer adjusting rod are connected through an inner layer adjusting screw rod.
The principle of the double-layer six-head plastic extruder is as follows: the servo oil cylinder is opened, the power output end of the servo oil cylinder drives the glue drawing head to be connected with the tightening nut, the glue drawing head connecting nut and the linkage plate to move up and down, the linkage moves along the track of the glue drawing head bottom plate support and synchronously drives the thickness adjusting screw to move up and down, when the thickness adjusting screw moves upwards, each layer of molten plastic flows into the corresponding machine head body through the main runner corresponding to the flow distribution plate and finally enters the machine head core, the uniform thickness of the plastic glue blank is achieved through the glue passing runner of the flow distribution comb and the inner and outer ring structures of the positioning ring, the thickness adjusting screw moves downwards and penetrates through each machine head body to extrude the corresponding molten plastic from the mouth mold cup core, high pressure is provided by the air blowing seat to ensure the extruded shape shaping, and the plastic extrusion process is completed.
Furthermore, a one-way thrust ball bearing is sleeved on the outer side of the top of the thickness adjusting screw rod, the bottom of the linkage plate is provided with a bearing gland and a bearing fixing nut, the thickness adjusting screw rod penetrates through the bearing gland and the bearing fixing nut to realize the installation with the linkage plate, and the one-way thrust ball bearing is positioned below the bearing gland; the thickness adjusting screw tightening nut is sleeved on the outer side of the bottom of the thickness adjusting screw, and the thickness adjusting screw nut is installed on the outer side of the thickness adjusting screw tightening nut.
Furthermore, the linkage rod is also provided with a heat insulation plate positioned below the bearing plate, and the bottom of the heat insulation plate is provided with a positioning block.
Furthermore, a first positioning pin for positioning each other is arranged between the inner-layer splitter plate and the outer-layer splitter plate, and a second positioning pin for positioning the positioning ring is arranged in the first machine head body.
Furthermore, the bottom of the thickness adjusting sliding core is also provided with a locking screw for locking the thickness adjusting sliding core and the machine head body gland.
Furthermore, the top of the outer layer splitter plate is also provided with a machine head supporting frame.
Furthermore, one end of the outer layer feeding pipe is connected with a first outer layer connecting flange in an installing mode, and the other end of the outer layer feeding pipe is connected with the outer layer splitter plate through a second outer layer connecting flange; one end of the inner layer feeding pipe is connected with a first inner layer connecting flange, and the other end of the inner layer feeding pipe is connected with the inner layer splitter plate through a second inner layer connecting flange.
In conclusion, the double-layer six-head plastic extruder disclosed by the invention adopts a double-layer plastic feeding and six-head structure, and can synchronously extrude six plastic rubber blanks; the thickness regulating structure of the servo oil cylinder product is adopted, the corresponding linkage plate and the thickness regulating screw rod can be stably and smoothly driven to do linear reciprocating motion, each machine head of the plastic extruder has an independent temperature control function, and the temperature control of at least 25 sections of temperature is realized, so that the temperature accuracy and the melting uniformity of each layer are ensured. The molten plastics which enter the inner-layer splitter plate and the outer-layer splitter plate through shunting pass through the glue passing flow channel of the shunting comb and the inner and outer ring structures of the positioning ring to achieve uniform thickness of the plastic glue blank; in addition, the blowing seat can apply high pressure to molten plastic and extrusion, so that the plastic rubber blank is filled with high-pressure gas and the appearance of the product is kept to be extruded and reach the cavity of the blow molding die; the inner layer adjusting rod and the outer layer adjusting rod can adjust the flow of the symmetrical molten plastic entering the flow distribution plate, so that the flow control of the molten plastic entering the main flow rubber channel is facilitated, and the operation is facilitated. The plastic extruder is suitable for use with PE as plastic material.
Drawings
FIG. 1 is an exploded view of a double-deck six-head plastic extruder according to example 1 of the present invention;
FIG. 2 is a rear view of a double-layer six-head plastic extruder according to example 1 of the present invention;
FIG. 3 is a right side view of a double-layer six-head plastic extruder according to example 1 of the present invention;
fig. 4 is a bottom view of a two-layer six-head plastic extruder of example 1 of the present invention.
Detailed Description
Example 1
A dual-layer six-head plastic extruder described in this embodiment 1, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, comprises a splitter plate assembly 3 composed of an outer splitter plate 1 and an inner splitter plate 2, an outer feeding pipe 4 connected and communicated with the outer splitter plate, an inner feeding pipe 5 connected and communicated with the inner splitter plate, a linkage rod 6 passing through the splitter plate assembly from top to bottom and fixedly installed with the splitter plate assembly, a supporting plate 7 and a linkage rod connecting plate 8 arranged at the upper end of the linkage rod, tab bottom plate pillars 9 installed at four corners of the supporting plate, a linkage plate 10 passing through and installed and matched with the tab bottom plate pillars, a tab bottom plate 11 connected and installed at the tops of the tab bottom plate pillars, a servo cylinder 12 installed on the tab bottom plate, a first tab connecting nut 13 and a first tab connecting nut 14 installed at a power output end of the servo cylinder, A second rubber head connecting nut 15 which is fixedly connected with the linkage plate and linked with the linkage plate and tightly sleeved with the first rubber head connecting nut, a second rubber head connecting tightening nut 16 which is tightly sleeved outside the first rubber head connecting nut, a linkage plate guide core 17 which is arranged at the bottom of the rubber head base plate, a linkage plate guide sleeve 18 which is arranged on the linkage plate and is matched with the linkage plate guide core, an oil-containing copper sleeve 19 and a copper sleeve pressing plate 20 which are arranged between the top of the rubber head base plate support and the rubber head base plate for realizing linkage of the rubber head and the linkage plate, six thickness adjusting screw rods 21 which are uniformly distributed and linked with the linkage plate, six first machine head bodies 22 which are arranged at the lower end of the linkage plate, six second machine head bodies 23 which are correspondingly arranged and spliced with the bottom of the first machine head body, six third machine head bodies 24 which are correspondingly arranged and connected with the bottom of the second machine head body, a shunt comb 25 which is arranged in the first machine head body and the second machine head body and is used for enabling, A positioning ring 26 which is arranged in the first machine head body, is correspondingly arranged with the shunt comb and is provided with an inner ring mechanism and an outer ring mechanism, a blowing fixing block 27 which is arranged at the back of the second machine head body, a machine head core 28 which is arranged between the second machine head body and the third machine head body, an outer layer core sleeve 29 which is arranged on the outer side of the machine head core, a thickness adjusting sliding core 30 which is arranged in the third machine head body, a machine head body gland 31 which is arranged at the bottom of the third machine head body, a sliding sleeve seat 32 which is installed in a matched manner with the bottom of the third machine head body pressure cover, a thickness adjusting sliding sleeve 33 which is installed in a matched manner with the thickness adjusting sliding core through the sliding sleeve seat, a port mould adjusting seat 34 which is installed and fixed with the bottom of the sliding sleeve seat through the thickness adjusting sliding sleeve, a port mould cup core 35 which is installed in a matched manner corresponding to the thickness adjusting sliding sleeve, a port mould pressing plate 36 which is installed and matched with the port mould adjusting seat and a port mould adjusting block 37 which is arranged on the port mould cup core are arranged on the outer side of the port mould cup core; the top of the outer-layer splitter plate is provided with an outer-layer adjusting rod 38, the outer side of the outer-layer adjusting rod is provided with an outer-layer adjusting rod sliding block (not shown in the figure), and the top of the outer-layer adjusting rod is sequentially provided with a first outer-layer adjusting rod gland 40 and a second outer-layer adjusting rod gland 41; the back of the inner layer flow distribution plate is provided with an inner layer adjusting rod 42, the outer side of the inner layer adjusting rod is provided with an inner layer adjusting rod sliding block 43, the inner layer adjusting rod is arranged on an inner layer adjusting rod seat 44, and the inner layer adjusting rod seat and the inner layer adjusting rod are connected through an inner layer adjusting screw rod 45.
The principle of the double-layer six-head plastic extruder is as follows: the servo oil cylinder is opened, the power output end of the servo oil cylinder drives the glue drawing head to be connected with the tightening nut, the glue drawing head connecting nut and the linkage plate to move up and down, the linkage moves along the track of the glue drawing head bottom plate support and synchronously drives the thickness adjusting screw to move up and down, when the thickness adjusting screw moves upwards, each layer of molten plastic flows into the corresponding machine head body through the main runner corresponding to the flow distribution plate and finally enters the machine head core, the uniform thickness of the plastic glue blank is achieved through the glue passing runner of the flow distribution comb and the inner and outer ring structures of the positioning ring, the thickness adjusting screw moves downwards and penetrates through each machine head body to extrude the corresponding molten plastic from the mouth mold cup core, high pressure is provided by the air blowing seat to ensure the extruded shape shaping, and the plastic extrusion process is completed.
In this embodiment, a one-way thrust ball bearing 46 is sleeved outside the top of the thickness adjusting screw, the bottom of the linkage plate is provided with a bearing gland 47 and a bearing fixing nut 48, the thickness adjusting screw passes through the bearing gland and the bearing fixing nut to realize the installation with the linkage plate, and the one-way thrust ball bearing is positioned below the bearing gland; the thickness adjusting screw tightening nut 49 is sleeved on the outer side of the bottom of the thickness adjusting screw, and the thickness adjusting screw nut 50 is installed on the outer side of the thickness adjusting screw tightening nut.
In this embodiment, the linkage rod is further provided with a heat insulation plate 51 positioned below the support plate, and the bottom of the heat insulation plate is provided with a positioning block 52.
In this embodiment, a first positioning pin 53 for positioning each other is disposed between the inner splitter plate and the outer splitter plate, and a second positioning pin 54 for positioning the positioning ring is disposed in the first machine head body.
In this embodiment, the bottom of the thickness-adjusting slide core is further provided with a locking screw 55 for locking the thickness-adjusting slide core and the head body gland.
In this embodiment, a handpiece support frame 56 is also provided on top of the outer manifold.
In this embodiment, one end of the outer layer feeding pipe is connected with a first outer layer connecting flange 57, and the other end is connected with the outer layer splitter plate through a second outer layer connecting flange 58; one end of the inner layer feeding pipe is connected with a first inner layer connecting flange 59, and the other end of the inner layer feeding pipe is connected with the inner layer splitter plate through a second inner layer connecting flange 60.
The double-layer six-machine-head plastic extruder adopts a double-layer plastic feeding and six-machine-head structure, and can synchronously extrude six plastic rubber blanks; the servo oil cylinder is used as a product thickness regulating and controlling structure, the corresponding linkage plate and the thickness regulating screw rod can be stably and smoothly driven to do linear reciprocating motion, each machine head of the plastic extruder has an independent temperature control function, and the temperature control of at least 25 sections of temperature is realized, so that the temperature accuracy and the uniformity of each layer of melting are ensured. The molten plastics which enter the inner-layer splitter plate and the outer-layer splitter plate through shunting pass through the glue passing flow channel of the shunting comb and the inner and outer ring structures of the positioning ring to achieve uniform thickness of the plastic glue blank; in addition, the blowing seat can apply high pressure to molten plastic and extrusion, so that the plastic rubber blank is filled with high-pressure gas and the appearance of the product is kept to be extruded and reach the cavity of the blow molding die; the inner layer adjusting rod and the outer layer adjusting rod can adjust the flow of the symmetrical molten plastic entering the flow distribution plate, so that the flow control of the molten plastic entering the main flow rubber channel is facilitated, and the operation is facilitated. The plastic extruder is suitable for use with PE as plastic material.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.

Claims (7)

1. A plastic extruder with six double-layer machine heads is composed of a splitter plate assembly consisting of an outer splitter plate and an inner splitter plate, an outer feeding pipe communicated with the outer splitter plate, an inner feeding pipe communicated with the inner splitter plate, a linkage rod passing through the splitter plate assembly from top to bottom and fixedly installed with the splitter plate, a supporting plate and a linkage rod connecting plate arranged at the upper end of the linkage rod, rubber-drawing head bottom plate pillars arranged at four corners of the supporting plate, a linkage plate passing through and matched with the rubber-drawing head bottom plate pillars, a rubber-drawing head bottom plate connected and installed at the tops of the rubber-drawing head bottom plate pillars, a servo oil cylinder arranged on the rubber-drawing head bottom plate, a first rubber-drawing head connecting nut and a first rubber-drawing head connecting nut arranged at the power output end of the servo oil cylinder, a second rubber-drawing head connecting nut fixedly connected and linked with the linkage plate and sleeved on the first rubber-drawing head connecting nut, a first rubber-drawing, A second rubber drawing head connecting nut tightly sleeved outside the first rubber drawing head connecting nut, a linkage plate guide core arranged at the bottom of a rubber drawing head bottom plate, a linkage plate guide sleeve arranged on the linkage plate and matched with the linkage plate guide core, an oil-containing copper sleeve and a copper sleeve pressing plate arranged between the top of a rubber drawing head bottom plate support and the rubber drawing head bottom plate for realizing linkage of the two, six thickness adjusting screws which are uniformly distributed and linked with the linkage plate, six first machine head bodies arranged at the lower end of a linkage rod, six second machine head bodies correspondingly arranged and spliced with the bottom of the first machine head bodies, six third machine head bodies correspondingly arranged and connected with the bottom of the second machine head bodies, a shunt comb arranged in the first machine head bodies and used for forming rubber blanks into uniform thickness, a positioning ring arranged in the first machine head body and correspondingly arranged with the shunt comb and provided with an inner and outer ring mechanism, The air blowing fixing block is arranged at the back of the second machine head body, the machine head core is arranged between the second machine head body and the third machine head body, the outer core sleeve is arranged on the outer side of the machine head core, the thickness adjusting sliding core is arranged in the third machine head body, the machine head body gland is arranged at the bottom of the third machine head body, the sliding sleeve seat is arranged at the bottom of the third machine head body gland in a matched mode, the thickness adjusting sliding sleeve penetrates through the sliding sleeve seat and is arranged in a matched mode with the thickness adjusting sliding core, the neck mold adjusting seat is arranged at the bottom of the sliding sleeve seat in a penetrated mode, the neck mold cup core is arranged in a matched mode corresponding to the thickness adjusting sliding sleeve, the neck mold pressing plate is arranged on the outer side of the neck mold cup core and is arranged in a matched mode with the neck mold adjusting; the top of the outer-layer splitter plate is provided with an outer-layer adjusting rod, an outer-layer adjusting rod sliding block is arranged outside the outer-layer adjusting rod, and a first outer-layer adjusting rod pressing cover and a second outer-layer adjusting rod pressing cover are sequentially arranged at the top of the outer-layer adjusting rod; the back of the inner layer flow distribution plate is provided with an inner layer adjusting rod, an inner layer adjusting rod sliding block is arranged on the outer side of the inner layer adjusting rod, the inner layer adjusting rod is installed on an inner layer adjusting rod seat, and the inner layer adjusting rod seat and the inner layer adjusting rod are connected through an inner layer adjusting screw rod.
2. The plastic extruder with six double layers as claimed in claim 1, wherein the outer side of the top of the thickness adjusting screw is sleeved with a one-way thrust ball bearing, the bottom of the linkage plate is provided with a bearing gland and a bearing fixing nut, the thickness adjusting screw passes through the bearing gland and the bearing fixing nut to realize the installation with the linkage plate, and the one-way thrust ball bearing is positioned below the bearing gland; the thickness adjusting screw tightening nut is sleeved on the outer side of the bottom of the thickness adjusting screw, and the thickness adjusting screw nut is installed on the outer side of the thickness adjusting screw tightening nut.
3. The double-layer six-head plastic extruder as claimed in claim 2,
the linkage rod is also provided with a heat insulation plate positioned below the bearing plate, and the bottom of the heat insulation plate is provided with a positioning block.
4. The plastic extruder as claimed in claim 3, wherein a first positioning pin is disposed between the inner splitter plate and the outer splitter plate for positioning each other, and a second positioning pin is disposed in the first extruder body for positioning the positioning ring.
5. The plastic extruder with six double-layer heads as claimed in claim 4, wherein the bottom of the thickness-adjusting slide core is further provided with a locking screw for locking the thickness-adjusting slide core and the head body gland.
6. The plastic extruder as claimed in claim 5, wherein a frame support is provided on top of the outer splitter plate.
7. The double-layer six-head plastic extruder as claimed in claim 6, wherein one end of the outer layer feeding pipe is connected with a first outer layer connecting flange, and the other end is connected with the outer layer splitter plate through a second outer layer connecting flange; one end of the inner layer feeding pipe is connected with a first inner layer connecting flange, and the other end of the inner layer feeding pipe is connected with the inner layer splitter plate through a second inner layer connecting flange.
CN201910510922.XA 2019-06-13 2019-06-13 Double-layer six-machine-head plastic extruder Active CN110239051B (en)

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CN201910510922.XA CN110239051B (en) 2019-06-13 2019-06-13 Double-layer six-machine-head plastic extruder

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