CN110877450A - Screw extrusion device with air cooling function - Google Patents

Screw extrusion device with air cooling function Download PDF

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Publication number
CN110877450A
CN110877450A CN201911166356.1A CN201911166356A CN110877450A CN 110877450 A CN110877450 A CN 110877450A CN 201911166356 A CN201911166356 A CN 201911166356A CN 110877450 A CN110877450 A CN 110877450A
Authority
CN
China
Prior art keywords
screw
fan
barrel
cavity
sleeve
Prior art date
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Pending
Application number
CN201911166356.1A
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Chinese (zh)
Inventor
徐文良
何建领
李明
刘俊
庞阳
肖宇韬
肖志林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Tongda Machinery Co Ltd
Original Assignee
Suzhou Tongda Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Tongda Machinery Co Ltd filed Critical Suzhou Tongda Machinery Co Ltd
Priority to CN201911166356.1A priority Critical patent/CN110877450A/en
Publication of CN110877450A publication Critical patent/CN110877450A/en
Pending legal-status Critical Current

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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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/802—Heating
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/82—Cooling
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
    • 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
    • B29C2948/92704—Temperature
    • 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
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

A screw extrusion device with air cooling function belongs to the technical field of plastic extrusion devices. The device comprises a machine barrel and a feeding barrel, wherein the left end of the feeding barrel is matched and connected with the right end of the machine barrel, and the left end of the machine barrel is matched and connected with a machine barrel melt extrusion head; the screw is arranged in the cylinder cavity, and the screw driving mechanism is arranged on the rack; the heating rings are arranged outside the machine barrel, an annular cavity is arranged on the inner wall of each heating ring, ventilation grooves are respectively arranged on two sides of the cavity wall surrounding the annular cavity, heat insulation rings are respectively arranged outside each heating ring, and a space between every two adjacent heating rings forms an air outlet cavity; the screw temperature zone temperature adjusting and controlling mechanism is fixed with the heat insulation ring and communicated with the annular cavity; the hopper is arranged corresponding to the position of the feeding cylinder; the method is characterized in that: the hopper is fixed with the air cooling mechanism at the position corresponding to the feeding cylinder and is communicated with the cavity of the feeding cylinder. The smooth and easy effect of feeding to the barrel by the feeding section of thick bamboo is ensured.

Description

Screw extrusion device with air cooling function
Technical Field
The invention belongs to the technical field of plastic extrusion devices, and particularly relates to a screw extrusion device with an air cooling function.
Background
As is known in the art, a screw extrusion apparatus is generally divided into different temperature zones, and the temperatures of the respective temperature zones are different according to process requirements, and are generally controlled by a screw temperature zone temperature adjusting control mechanism which is disposed outside a machine barrel and controlled by a PLC (programmable logic controller). Further, as known in the art, when the melting temperature of some materials, such as engineering plastics (ABS), is up to more than 200 ℃, and engineering plastics are introduced into the material introduction section through a hopper arranged corresponding to the material introduction section of the screw, the temperature difference between the material introduction section of the screw and the conveying heating section of the screw is very large, so that the materials tending to melt and the plastic particles just introduced are bonded or entangled with each other in the material introduction section, and in severe cases, the materials become clogged, and the machine must be stopped for disposal. The water cooling device is arranged at the position corresponding to the discharge port of the hopper, so that the effect of the suddenly raised temperature of the conveying heating section on the feeding section can be avoided to a certain extent, and the mutual adhesion of the materials can be relieved, and for the purpose, reference is made to 'an inlet water cooling screw extruder' recommended by Chinese patent CN206475407U, a water cooling jacket is additionally arranged at the discharge port of the lower part of the hopper, the temperature of the feeding section is reduced by the water cooling jacket, and particularly, reference is made to paragraphs 0013 to 0014 of the specification of the patent. However, as mentioned above, the melting temperature of ABS is high, and water boils and vaporizes at 100 ℃, so that it is difficult to achieve the cooling effect expected in the industry, that is, the problem of adhesion of the materials cannot be solved effectively, and the technical solution described below is generated in this context.
Disclosure of Invention
The invention aims to provide a screw extrusion device with an air cooling function, which is helpful for eliminating the influence of the suddenly increased temperature of a machine barrel on the area of a feeding barrel and causing the mutual adhesion of materials so as to ensure the smooth feeding effect.
The task of the invention is accomplished in such a way that the screw extrusion device with the air cooling function comprises a machine barrel and a feeding barrel, wherein the left end of the feeding barrel is matched and connected with the right end of the machine barrel, a feeding barrel cavity of the feeding barrel is communicated with a machine barrel cavity of the machine barrel, and a machine barrel melt extrusion head is matched and connected with the left end of the machine barrel; the screw is arranged in the cylinder cavity, the left end of the screw extends out of the cylinder cavity and extends to the cylinder melt extrusion head, the right end of the screw extends out of the feeding cylinder cavity and forms a screw shaft head, the screw shaft head is in transmission connection with the screw driving mechanism, and the screw driving mechanism is arranged on the rack in a use state; the heating rings are distributed at intervals in a state of corresponding to each temperature zone of the screw and are arranged outside the machine barrel, an annular cavity is respectively arranged on the inner wall of each heating ring and in the middle of the heating rings in the length direction around the heating rings, ventilation grooves are respectively arranged at intervals on two sides of the cavity wall around the annular cavity, a heat insulation ring is respectively arranged outside each heating ring, and a space between every two adjacent heating rings is formed into an air outlet cavity which is communicated with the ventilation grooves; the number of the screw temperature zone temperature adjusting and controlling mechanisms is equal to that of the heating rings, and the screw temperature zone temperature adjusting and controlling mechanisms are fixed with the heat insulation rings and communicated with the annular cavity; the hopper is arranged corresponding to the position of the feeding cylinder; is characterized by also comprising an air cooling mechanism which is arranged outside the feeding barrel, and the hopper is fixed with the air cooling mechanism at the position corresponding to the feeding barrel and is communicated with the cavity of the feeding barrel.
In a specific embodiment of the invention, a fan matching seat is respectively formed on the group of heating rings and at the position corresponding to the group of screw temperature zone temperature adjusting and controlling mechanisms, the fan matching seat is formed with a matching seat air inlet cavity, the matching seat air inlet cavity is communicated with the annular cavity, and the group of screw temperature zone temperature adjusting and controlling mechanisms are fixed with the heat insulation ring at the position corresponding to the fan matching seat.
In another specific embodiment of the present invention, each of the screw temperature zone temperature adjusting and controlling mechanisms includes a motor and a fan, the motor is in transmission fit with the fan and is fixed with the heat insulation ring by the fan and the motor at a position corresponding to the fan connection seat, and a fan outlet of the fan is communicated with the air inlet chamber of the connection seat.
In another specific embodiment of the present invention, the left end of the feed cylinder is fixed to the right end face of the cylinder by a feed cylinder fixing screw.
In a further specific embodiment of the present invention, the air cooling mechanism includes a sleeve, a wind shield air supply motor and a wind shield air supply fan, the sleeve is sleeved outside the feeding cylinder, and the left end of the sleeve is fixed to the right end of the barrel, and the right end of the sleeve is fixed to the right end of the feeding cylinder, a set of heat dissipation fins is formed on the outer wall of the left end of the sleeve and around the periphery of the outer wall at intervals, the wind shield is fixed to the sleeve in a region corresponding to the set of heat dissipation fins, the set of heat dissipation fins are shielded in a wind shield cavity of the wind shield by the wind shield, and a wind shield air outlet communicated with the outside is formed on the right side of the wind shield, the wind shield air supply motor is in transmission fit with the wind shield air supply fan and is fixed to the wind shield by the wind shield air supply fan together with the wind shield air supply motor, the wind, the hopper is fixed with the upper part of the right end of the sleeve.
In yet another embodiment of the present invention, a cylinder flange is formed at the right end of the cylinder, a sleeve left flange is formed at the left end of the sleeve, the sleeve left flange is fixed to the cylinder flange by sleeve left flange fixing screws, a feed cylinder right connecting flange is formed at the right end of the feed cylinder, a sleeve right flange is formed at the right end of the sleeve, and the sleeve right flange is fixed to the feed cylinder right connecting flange by sleeve right flange fixing screws.
In a more specific embodiment of the present invention, a material guiding pipe fixing seat is formed at the right end of the sleeve and at a position on the right side of the fan housing, a material guiding pipe fixing seat cavity of the material guiding pipe fixing seat is communicated with the feeding cylinder cavity through a feeding cylinder feeding port formed on the feeding cylinder, wherein a material guiding pipe is fixed on the material guiding pipe fixing seat, and the lower part of the hopper is matched and connected with the material guiding pipe.
In a further specific embodiment of the present invention, a fan housing air inlet cavity communicated with the fan housing cavity extends from a downward side of the fan housing and at a position corresponding to the fan housing air supply fan, and the fan housing air supply fan and the fan housing air supply motor are fixed to the fan housing at a position corresponding to the fan housing air inlet cavity; a thermocouple is disposed on the sleeve and to the right of the set of fins.
In a still more specific embodiment of the present invention, a screw shaft seat connecting flange is fixed at the right end of the sleeve and at a position corresponding to the outer side of the right flange of the sleeve, a screw shaft head of the screw extends to the screw shaft seat, the screw shaft seat is fixed with the screw shaft seat connecting flange through a screw shaft seat fixing screw, and the screw shaft head is in transmission connection with the screw driving mechanism at the position of the screw shaft seat.
In yet another specific embodiment of the present invention, the screw driving mechanism includes a reduction box driving wheel and a reduction box, the reduction box is fixed to the frame in use, a reduction box power output shaft of the reduction box extends to the screw shaft seat at a position corresponding to the screw shaft head, the screw shaft head is in transmission connection with the reduction box power output shaft, the reduction box driving wheel is fixed to a reduction box power input shaft of the reduction box, and the reduction box driving wheel is in transmission connection with the driving motor through a transmission belt in use.
The technical scheme provided by the invention has the technical effects that: because the position of the feeding barrel is provided with the air cooling mechanism, and the hopper is fixed with the air cooling mechanism at the position corresponding to the feeding barrel, the air cooling mechanism carries out forced air cooling on the feeding barrel region, the temperature suddenly rising at the right end of the machine barrel is prevented from influencing the material in the region of the feeding barrel, and the smooth feeding effect from the feeding barrel to the machine barrel is ensured by avoiding the mutual adhesion of the materials.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention.
Fig. 2 is a sectional view of the cylinder and a middle portion in the length direction of the screw shown in fig. 1.
Fig. 3 is a sectional view a-a of fig. 1.
Detailed Description
In order to clearly understand the technical spirit and the advantages of the present invention, the applicant below describes in detail by way of example, but the description of the example is not intended to limit the technical scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in material, should be considered as the technical scope of the present invention.
In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and back are taken as examples of the position state of fig. 1, and thus, the present invention should not be construed as being particularly limited to the technical solutions provided by the present invention.
Referring to fig. 1 to 3, there are shown a barrel 1 and a feed cylinder 2, the left end of the feed cylinder 2 is coupled (fixedly connected) with the right end of the barrel 1 and a feed cylinder cavity 21 of the feed cylinder 2 is communicated with a barrel cavity 11 of the barrel 1, and a barrel melt extrusion head 12 is coupled with the left end of the barrel 1, the barrel melt extrusion head 12 may also be referred to as a barrel melt extrusion port and is supported by a carriage 121; a screw 3 and a screw drive 4 are shown, the screw 3 being arranged in the machine chamber 11 and the left end of the screw 3 extending out of the machine chamber 11 to the machine melt extrusion head 12, while the right end of the screw 3 protrudes out of the right end of the feed cylinder chamber 21 and is formed with a screw head 31, the screw head 31 being in driving connection with the screw drive 4, and the screw drive 4 being arranged in use on the machine frame; a group of heating rings 5 is shown, the group of heating rings 5 are distributed at intervals in a state of corresponding to each temperature zone of the screw 3 and are arranged outside the machine barrel 1, an annular cavity 51 is respectively arranged (can be called as being formed) on the inner wall of the group of heating rings 5 and is positioned at (corresponding to) the middle part of the length direction of the heating rings 5 around the periphery of the inner wall of the heating rings 5, and ventilating grooves 511 are respectively arranged at intervals in a state of being parallel to the length direction of the heating rings 5 on two sides of the cavity wall of the annular cavity 51. If there are twelve ventilation slots 511 on one side of the wall of the annular chamber 51, there are twelve on the other side, and the ventilation slots 511 on one side correspond to the ventilation slots 511 on the other side. A heat insulation ring 52 is respectively arranged outside the group of heating rings 5, and the space between every two adjacent heating rings 5 is formed into an air outlet cavity 53, and the air outlet cavity 53 is communicated with the ventilating slot 511; a set of screw warm zone temperature regulation and control mechanisms 6 is shown, the number of the screw warm zone temperature regulation and control mechanisms 6 is equal to that of the heating rings 5, and the screw warm zone temperature regulation and control mechanisms are fixed with the heat insulation rings 52 and communicated with the annular cavity 51; a hopper 7 is shown, which hopper 7 is arranged in correspondence with the position of the aforementioned feeder 2.
Please continue to refer to fig. 1 to fig. 3, which are the technical points of the technical solutions provided by the present invention: in the structural system of the screw extrusion device with the air cooling function, an air cooling mechanism 8 is further included, the air cooling mechanism 8 is arranged outside the feeding cylinder 2, and the hopper 7 is fixed with the water cooling mechanism 8 at a position corresponding to the feeding cylinder 2 and is communicated with the feeding cylinder cavity 21.
A fan matching seat 54 is respectively formed on the group of heating rings 5 and at the position corresponding to the group of screw temperature zone temperature adjusting and controlling mechanisms 6, the fan matching seat 54 is formed with a matching seat air inlet cavity 541, the matching seat air inlet cavity 541 is communicated with the annular cavity 51, and the group of screw temperature zone temperature adjusting and controlling mechanisms 6 are fixed with the heat insulation ring 52 at the position corresponding to the fan matching seat 54.
As a screw extruder, the region from the feed to the melt discharge, i.e., from the right end to the left end of the barrel 1, is usually set to different temperature zones according to the process requirements, and the temperatures of the temperature zones are different, and are thus adjusted and controlled by the aforementioned set of screw temperature zone temperature adjusting and controlling means 6. Although only one set of screw temperature zone temperature adjustment control mechanisms 6 is shown as four in the present embodiment, it is apparent that the number should not be limited thereto because the more temperature zones of the screw extrusion apparatus, the correspondingly increased number of screw temperature zone temperature adjustment control mechanisms 6 and vice versa.
The screw temperature zone temperature adjusting and controlling mechanisms 6 respectively comprise a motor 61 and a fan 62, the motor 61 is in transmission fit with the fan 62, the fan 62 and the motor 61 are fixed with the heat insulation ring 52 at a position corresponding to the fan adapting seat 54, and a fan outlet of the fan 62 is communicated with the adapting seat air inlet cavity 541. When the motor 61 works, the fan 62 is driven by the motor, air with the external environment temperature is introduced into the matching seat air inlet cavity 541 of the fan matching seat 54 through the fan air outlet of the fan 62, the air is introduced into the annular cavity 51 through the matching seat air inlet cavity 541 and is led out from the air outlet cavity 53 through the air duct 511, and the temperature of the temperature zone corresponding to the part of the machine barrel 1 is controlled by the air volume of the fan 62.
The left end of the feed cylinder 2 is fixed to the right end surface of the cylinder 1 by a feed cylinder fixing screw 22.
Continuing with fig. 1 and fig. 2, the aforementioned air cooling mechanism 8 includes a sleeve 81, a wind shield 82, a wind shield air-supplying motor 83 and a wind shield air-supplying fan 84, the sleeve 81 is sleeved outside the aforementioned feeding cylinder 2, and the left end of the sleeve 81 is fixed with the right end of the aforementioned barrel 1, and the right end of the sleeve 81 is fixed with the right end of the feeding cylinder 2, a set of heat dissipation fins 811 (also referred to as "heat dissipation fins" hereinafter) is formed on the outer wall of the left end of the sleeve 81 and around the periphery of the outer wall at intervals, the wind shield 82 is fixed with the sleeve 81 in the area corresponding to the set of heat dissipation fins 811, the set of heat dissipation fins 811 is shielded in a wind shield cavity 822 of the wind shield 82 by the wind shield 82, and a wind shield air outlet 821 communicated with the outside is formed on the right side of the wind shield 82, the wind shield motor 83 is in driving fit with the wind shield air-supplying fan 84 and the wind, an air outlet of the fan housing blower 84 is communicated with the fan housing cavity 822 of the fan housing 82, and the hopper 7 is fixed to an upper portion of the right end of the sleeve 81.
A cylinder flange 13 is formed at the right end of the cylinder 1, a cylinder left flange 812 is formed at the left end of the sleeve 81, the cylinder left flange 812 is fixed to the cylinder flange 13 by a sleeve left flange fixing screw 8121, a feed cylinder right flange 23 is formed at the right end of the feed cylinder 2, a sleeve right flange 813 is formed at the right end of the sleeve 81, and the sleeve right flange 813 is fixed to the feed cylinder right flange 23 by a sleeve right flange fixing screw 8131.
A material guiding pipe fixing seat 814 is formed at the right end of the sleeve 81 and at the right side of the wind shield 82, a material guiding pipe fixing seat cavity 8141 of the material guiding pipe fixing seat 814 is communicated with the feeding cylinder cavity 21 through a feeding cylinder feeding port 24 arranged on the feeding cylinder 2, wherein a material guiding pipe 8142 is fixed on the material guiding pipe fixing seat 814, the lower part of the hopper 7 is matched and connected with the material guiding pipe 8142, and specifically, the lower part of the hopper 7 is matched and connected and fixed with an upper flange of the material guiding pipe 8142.
As shown in fig. 2, a hood intake chamber 823 communicating with the hood chamber 822 extends on a downward side of the hood 82 at a position corresponding to the hood air blower 84, and the hood air blower 84 and the hood air blower motor 83 are fixed to the hood 82 at a position corresponding to the hood intake chamber 823; a thermocouple 815 is disposed on the sleeve 81 and to the right of the set of heat sink fins 811.
In accordance with common practice, the thermocouple 815 is electrically connected to the electrical box in use, the temperature of the sleeve 81 is sensed by the thermocouple 815 and a signal is fed back to the electrical box, which instructs the hood blower motor 83 whether to operate, for example when the thermocouple senses a temperature below a set temperature, the hood blower motor 83 operates, and vice versa.
A screw shaft seat connecting flange 816 is fixed at the right end of the sleeve 81 and at a position corresponding to the outer side of the sleeve right flange 813, the screw shaft head 31 of the screw 3 extends to the screw shaft seat 311, the screw shaft seat 311 is fixed with the screw shaft seat connecting flange 816 by a screw shaft seat fixing screw 3111, and the screw shaft head 31 is in transmission connection with the screw driving mechanism 4 at the position of the screw shaft seat 311.
Continuing to refer to fig. 1, the screw driving mechanism 4 includes a reduction box driving wheel 41 and a reduction box 42, the reduction box 42 is fixed with the frame under use, a reduction box power output shaft 421 of the reduction box 42 extends to the screw shaft seat 311 at a position corresponding to the screw shaft head 31, the screw shaft head 31 is in transmission connection with the reduction box power output shaft 421 through a flat key 312 thereon, the reduction box driving wheel 41 is fixed with a reduction box power input shaft 422 of the reduction box 42, and the reduction box driving wheel 41 is in transmission connection with the driving motor through a transmission belt under use.
The plastic particles are introduced from the hopper 7 and enter the feeding barrel cavity 21 through the feeding tube cavity of the feeding tube 814, the feeding tube fixing seat cavity 8141 and the feeding barrel feeding hole 24 in sequence, meanwhile, a driving motor of a structural system of the screw driving mechanism 4 which is not shown in fig. 1 drives a driving motor main wheel, a reduction gearbox driving wheel 41 is driven by the driving motor main wheel through a transmission belt such as a belt, a reduction gearbox power input shaft 422 is driven by the reduction gearbox driving wheel 41, the reduction gearbox 42 decelerates and a reduction gearbox power output shaft 421 of the reduction gearbox 42 drives a screw shaft head 31 to rotate the screw 3, and at the moment, the plastic particles entering the feeding barrel cavity 21 are extruded from the barrel melt extrusion head 12 from right to left under the movement of the screw 3 and under the state of forming a melt. In the foregoing process, the water cooling mechanism 8 is in a working state, specifically: the fan housing air supply motor 83 operates to drive the fan housing air supply fan 84, and the fan outlet of the fan housing air supply fan 84 introduces the outside air into the fan housing cavity 822 through the fan housing air inlet cavity 823 to exchange heat with the group of heat dissipation fins 811, that is, to cool the group of heat dissipation fins 811, and the air in the fan housing cavity 822 with the increased temperature is led out from the fan housing air outlet 821, and the circulation is performed in such a way that the temperature in the area of the feeding cylinder 2 is reduced, and the reduced degree is sensed by the thermocouple 815.
At the same time, the temperature regulating and controlling means 6 of the aforesaid set of zones of the screw are all in working condition, and the temperature of each zone of the extrusion apparatus is controlled according to the above description of the applicant. The method comprises the following steps: since the set of screw temperature zone temperature adjusting and controlling mechanisms 6 is controlled by a Programmable Logic Controller (PLC) of the electric box, the PLC controls the rotation speed of the motor 61 of each screw temperature zone temperature adjusting and controlling mechanism 6 in the set of screw temperature zone temperature adjusting and controlling mechanisms 6 to change the rotation speed of the fan 62, so that the air supply amount of the fan 62 is changed, and finally the temperatures of different temperature zones corresponding to the machine barrel 1 are controlled.
Furthermore, as can be seen from the above description in conjunction with fig. 1: the whole screw 3 is respectively called as a material guiding section, a conveying heating section, an exhaust releasing section and a compression section from right to left, the material guiding section corresponds to the feeding cylinder cavity 21, the conveying heating section is positioned between the right side of the exhaust releasing section and the material guiding section, and the compression section is an area between the left side corresponding to the exhaust releasing section and the machine barrel melt extrusion head 12. It is also shown in fig. 1 that the thread on the screw body in the region of the screw 3 corresponding to the compression section is a double-flight thread.
In conclusion, the technical scheme provided by the invention overcomes the defects in the prior art, successfully completes the invention task and truly realizes the technical effects of the applicant in the technical effect column.

Claims (10)

1. A screw extrusion device with air cooling function comprises a machine barrel (1) and a feeding barrel (2), wherein the left end of the feeding barrel (2) is matched and connected with the right end of the machine barrel (1), a feeding barrel cavity (21) of the feeding barrel (2) is communicated with a machine barrel cavity (11) of the machine barrel (1), and a machine barrel melt extrusion head (12) is matched and connected with the left end of the machine barrel (1); a screw (3) and a screw driving mechanism (4), wherein the screw (3) is arranged in the barrel cavity (11), the left end of the screw (3) extends out of the barrel cavity (11) and extends to the barrel melt extrusion head (12), the right end of the screw (3) extends out of the feeding barrel cavity (21) and is formed with a screw head (31), the screw head (31) is in transmission connection with the screw driving mechanism (4), and the screw driving mechanism (4) is arranged on the frame in a use state; the heating device comprises a group of heating rings (5), the heating rings (5) are distributed at intervals in a state of corresponding to each temperature zone of the screw (3) and are arranged outside the machine barrel (1), an annular cavity (51) is respectively formed on the inner wall of the heating rings (5) and is positioned in the middle of the heating rings (5) in the length direction around the heating rings (5), ventilating grooves (511) are respectively formed at two sides of the cavity wall of the annular cavity (51) at intervals, a heat insulating ring (52) is respectively arranged outside the heating rings (5), the space between every two adjacent heating rings (5) is formed into an air outlet cavity (53), and the air outlet cavity (53) is communicated with the ventilating grooves (511); the number of the screw temperature zone temperature adjusting and controlling mechanisms (6) is equal to that of the heating rings (5), and the screw temperature zone temperature adjusting and controlling mechanisms are fixed with the heat insulation rings (52) and communicated with the annular cavity (51); a hopper (7), wherein the hopper (7) is arranged corresponding to the position of the feeding cylinder (2); the device is characterized by also comprising an air cooling mechanism (8), wherein the air cooling mechanism (8) is arranged outside the feeding cylinder (2), and the hopper (7) is fixed with the air cooling mechanism (8) at a position corresponding to the feeding cylinder (2) and is communicated with the feeding cylinder cavity (21).
2. The screw extrusion apparatus with air cooling function according to claim 1, wherein a fan attachment seat (54) is formed on each of said plurality of heating rings (5) and at a position corresponding to said plurality of screw warm zone temperature adjusting and controlling means (6), said fan attachment seat (54) is formed with an attachment seat air intake chamber (541), said attachment seat air intake chamber (541) communicates with said annular chamber (51), and said plurality of screw warm zone temperature adjusting and controlling means (6) is fixed to said heat insulating ring (52) at a position corresponding to said fan attachment seat (54).
3. Screw extrusion apparatus with air cooling function according to claim 2, characterized in that said set of screw warm-zone temperature regulation control means (6) each comprises a motor (61) and a fan (62), the motor (61) is in driving fit with the fan (62) and fixed with said heat insulating ring (52) by the fan (62) together with the motor (61) at a position corresponding to said fan adapter (54), and the fan outlet of the fan (62) is communicated with said adapter air inlet chamber (541).
4. Screw extrusion apparatus with air cooling function according to claim 1, characterised in that the left end of the feed cylinder (2) is fixed with the right end face of the barrel (1) by a feed cylinder fixing screw (22).
5. The screw extrusion apparatus with an air cooling function according to claim 1, wherein said air cooling mechanism (8) comprises a sleeve (81), a fan housing (82), a fan housing air supply motor (83) and a fan housing air supply fan (84), the sleeve (81) is fitted around said feed cylinder (2), and a left end of the sleeve (81) is fixed to a right end of said cylinder (1), and a right end of the sleeve (81) is fixed to a right end of the feed cylinder (2), a set of heat dissipating fins (811) is formed on an outer wall of the left end of the sleeve (81) and around the periphery of the outer wall in a spaced state, the fan housing (82) is fixed to the sleeve (81) in a region corresponding to the set of heat dissipating fins (811), the set of heat dissipating fins (811) is shielded by the fan housing (82) in a fan housing cavity (822) of the fan housing (82), and an air outlet (821) communicating with the outside is formed on the right side of the fan housing (82), the fan cover air supply motor (83) is in transmission fit with the fan cover air supply fan (84), the fan cover air supply fan (84) and the fan cover air supply motor (83) are fixed to the fan cover (82), an air outlet of the fan cover air supply fan (84) is communicated with a fan cover cavity (822) of the fan cover (82), and the hopper (7) is fixed to the upper portion of the right end of the sleeve (81).
6. The screw extrusion device with an air cooling function according to claim 5, wherein a barrel flange (13) is formed at the right end of the barrel (1), a sleeve left flange (812) is formed at the left end of the sleeve (81), the sleeve left flange (812) is fixed to the barrel flange (13) by a sleeve left flange fixing screw (8121), a feed barrel right connecting flange (23) is formed at the right end of the feed barrel (2), a sleeve right flange (813) is formed at the right end of the sleeve (81), and the sleeve right flange (813) is fixed to the feed barrel right connecting flange (23) by a sleeve right flange fixing screw (8131).
7. The screw extrusion device with an air cooling function according to claim 5, wherein a guide tube fixing seat (814) is formed at a right end of the sleeve (81) and at a position on a right side of the air hood (82), a guide tube fixing seat cavity (8141) of the guide tube fixing seat (814) is communicated with the feed cylinder cavity (21) through a feed cylinder feed port (24) formed in the feed cylinder (2), wherein a guide tube (8142) is fixed on the guide tube fixing seat (814), and a lower portion of the hopper (7) is coupled with the guide tube (8142).
8. The screw extrusion device with an air cooling function according to claim 5, wherein a hood air intake chamber (823) communicating with said hood chamber (822) extends on a side of said hood (82) facing downward and at a position corresponding to said hood air supply fan (84), said hood air supply fan (84) together with said hood air supply motor (83) being fixed to said hood (82) at a position corresponding to said hood air intake chamber (823); a thermocouple (815) is disposed on the sleeve (81) and to the right of the set of heat sink fins (811).
9. Screw extrusion apparatus with air cooling function according to claim 6, characterized in that a screw shaft seat connecting flange (816) is fixed at the right end of the sleeve (81) and at the position corresponding to the outer side of the sleeve right flange (813), the screw shaft head (31) of the screw (3) extends to the screw shaft seat (311), the screw shaft seat (311) is fixed with the screw shaft seat connecting flange (816) by a screw shaft seat fixing screw (3111), and the screw shaft head (31) is in transmission connection with the screw driving mechanism (4) at the position of the screw shaft seat (311).
10. The screw extrusion device with the air cooling function according to claim 9, wherein the screw driving mechanism (4) comprises a reduction gearbox driving wheel (41) and a reduction gearbox (42), the reduction gearbox (42) is fixed with the frame under use, a reduction gearbox power output shaft (421) of the reduction gearbox (42) extends to the screw shaft seat (311) at a position corresponding to the screw shaft head (31), the screw shaft head (31) is in transmission connection with the reduction gearbox power output shaft (421), the reduction gearbox driving wheel (41) is fixed with a reduction gearbox power input shaft (422) of the reduction gearbox (42), and the reduction gearbox driving wheel (41) is in transmission connection with the driving motor through a transmission belt under use.
CN201911166356.1A 2019-11-25 2019-11-25 Screw extrusion device with air cooling function Pending CN110877450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911166356.1A CN110877450A (en) 2019-11-25 2019-11-25 Screw extrusion device with air cooling function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911166356.1A CN110877450A (en) 2019-11-25 2019-11-25 Screw extrusion device with air cooling function

Publications (1)

Publication Number Publication Date
CN110877450A true CN110877450A (en) 2020-03-13

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CN201911166356.1A Pending CN110877450A (en) 2019-11-25 2019-11-25 Screw extrusion device with air cooling function

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114536714A (en) * 2022-03-17 2022-05-27 湖北路祥化工科技有限公司 Machine barrel cooling device of double-screw extruder for warm mixing agent preparation
CN114851501A (en) * 2021-02-04 2022-08-05 江苏汉鼎机械有限公司 Low smoke zero halogen cable extruder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114851501A (en) * 2021-02-04 2022-08-05 江苏汉鼎机械有限公司 Low smoke zero halogen cable extruder
CN114536714A (en) * 2022-03-17 2022-05-27 湖北路祥化工科技有限公司 Machine barrel cooling device of double-screw extruder for warm mixing agent preparation

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