CN116252450A - Wall thickness adjusting device of multi-layer co-extrusion light pipe machine head - Google Patents

Wall thickness adjusting device of multi-layer co-extrusion light pipe machine head Download PDF

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Publication number
CN116252450A
CN116252450A CN202111503842.5A CN202111503842A CN116252450A CN 116252450 A CN116252450 A CN 116252450A CN 202111503842 A CN202111503842 A CN 202111503842A CN 116252450 A CN116252450 A CN 116252450A
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CN
China
Prior art keywords
conical
center
conical head
head
concentrically
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Pending
Application number
CN202111503842.5A
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Chinese (zh)
Inventor
罗伟林
施昌钱
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Xiangshan Best Machinery Manufacturing Co ltd
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Xiangshan Best Machinery Manufacturing Co ltd
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Publication date
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Priority to CN202111503842.5A priority Critical patent/CN116252450A/en
Publication of CN116252450A publication Critical patent/CN116252450A/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
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • 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
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die
    • B29C48/3366—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die using a die with concentric parts, e.g. rings, cylinders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to a wall thickness adjusting device of a multi-layer co-extrusion optical tube machine head, which comprises two end blocks which are symmetrically arranged and mutually spliced, a tube seat which is concentrically embedded in the center of the front sides of the two end blocks, a chuck which is detachably sleeved and fixed outside the tube seat, a nozzle which is concentrically arranged in the tube seat, a first conical head which is concentrically embedded in the center of the rear sides of the two end blocks, a second conical head which is concentrically embedded in the center of the rear ends of the first conical head, a third conical head which is concentrically embedded in the center of the rear ends of the second conical head, and a fourth conical head which is concentrically embedded in the center of the rear ends of the third conical head; the invention can independently adjust the wall thickness of each layer of light pipe according to the requirement, thereby improving the applicability in a large scale, and the light pipes with different wall thicknesses can be formed by manufacturing a set of extrusion heads for production enterprises, thereby reducing the invested funds of the production enterprises as much as possible, and further effectively reducing the production cost.

Description

Wall thickness adjusting device of multi-layer co-extrusion light pipe machine head
Technical Field
The invention relates to a wall thickness adjusting device of a multi-layer co-extrusion optical tube machine head.
Background
The plastic light pipe is a common connecting component and is widely applied to various electrical products; the extruder for producing plastic light pipe has one head, which is one important part for molding plastic light pipe and can split the molten material from the extruder reasonably and extrude the molten material simultaneously to form several layers of concentrically distributed light pipes.
The existing multi-layer coextrusion light pipe machine head cannot adjust the wall thickness of each layer of light pipe, so that the wall thickness of each layer of light pipe formed by extrusion is the same, the applicability is poor, only one set of extrusion machine head can be manufactured again for forming light pipes with different wall thicknesses, but more funds are needed to be invested by a production enterprise, the production cost is increased, and the problem is needed to be solved.
Disclosure of Invention
The invention aims at solving the current state of the art, and provides a wall thickness adjusting device for a multi-layer coextrusion optical tube head, which has the advantages of large-scale improvement of applicability, and reduction of invested funds of production enterprises as much as possible so as to effectively reduce production cost.
The technical scheme adopted for solving the technical problems is as follows: the wall thickness adjusting device of the multi-layer co-extrusion optical tube head is characterized by comprising two symmetrically arranged end blocks which are spliced with each other, a tube seat which is concentrically embedded in the center of the front sides of the two end blocks, a chuck which is detachably sleeved and fixed outside the tube seat, a nozzle which is concentrically arranged in the tube seat, a first conical head which is concentrically embedded in the center of the rear sides of the two end blocks, a second conical head which is concentrically embedded in the center of the rear ends of the first conical head, a third conical head which is concentrically embedded in the center of the rear ends of the second conical head, and a fourth conical head which is concentrically embedded in the center of the rear ends of the third conical head; the rear end of the nozzle is concentrically inserted into the first conical head, the second conical head, the third conical head and the fourth conical head, the centers of the rear ends of the two end blocks are respectively provided with a conical notch, the two conical notches are mutually spliced, and the opening of the rear end of the tube seat is mutually communicated with the bottoms of the two conical notches; the first conical head is concentrically arranged in the two conical notches, the first conical counter bore is formed in the center of the rear end of the first conical head, the second conical counter bore is formed in the center of the bottom of the second conical head, the second conical counter bore is formed in the center of the rear end of the second conical head, the third conical counter bore is formed in the center of the rear end of the third conical head, the fourth conical counter bore is concentrically formed in the center of the third conical counter bore, the fourth conical counter bore is formed in the center of the rear end of the fourth conical head, the first discharging hole is formed in the center of the bottom of the first conical counter bore, the second discharging hole is formed in the center of the bottom of the second conical counter bore, the third discharging hole is formed in the center of the bottom of the fourth conical counter bore, the fourth discharging hole is formed in the center of the bottom of the fourth conical counter bore, the rear end of the nozzle sequentially concentrically penetrates through the first discharging hole, the second discharging hole, the third discharging hole and the fourth discharging hole and extend into the inside of the fourth conical counter bore, and the third discharging hole and the fourth discharging hole are spaced from the inner wall of the fourth discharging hole and the fourth discharging hole.
Preferably, a first conical opening is formed at the rear end opening of the tube seat, correspondingly, a conical head is outwards formed at the front end of the nozzle, the conical head is concentrically arranged in the first conical opening, a straight tube part is outwards formed at the end part of the conical head, and the straight tube part is concentrically arranged inside the front end opening of the tube seat.
Preferably, the device further comprises an air inlet pipe, wherein one end of the air inlet pipe is concentrically inserted into the fourth discharging hole forward and fixed at the rear end of the nozzle.
Preferably, a discharging channel is arranged between the centers of the front end and the rear end of the nozzle, a reamer part is formed in the opening of the rear end of the discharging channel, and the reamer part is communicated with the air inlet pipe.
Preferably, the opening of the first discharging hole is outwards formed with a first annular flanging, the opening of the second discharging hole is outwards formed with a second annular flanging, the opening of the third discharging hole is outwards formed with a third annular flanging, the opening of the fourth discharging hole is outwards formed with a fourth annular flanging, and the fourth annular flanging, the third annular flanging, the second annular flanging and the first annular flanging are sequentially and concentrically arranged from outside to inside.
Compared with the prior art, the invention has the advantages that: the invention can independently adjust the wall thickness of each layer of light pipe according to the requirement, thereby improving the applicability in a large scale, and the light pipes with different wall thicknesses can be formed by manufacturing a set of extrusion heads for production enterprises, thereby reducing the invested funds of the production enterprises as much as possible, and further effectively reducing the production cost.
Drawings
FIG. 1 is a front side block diagram of the present invention;
FIG. 2 is a rear side block diagram of the present invention;
fig. 3 is a cross-sectional structural view of the present invention.
Detailed Description
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
In order to keep the following description of the embodiments of the present invention clear and concise, the detailed description of known functions and known components thereof have been omitted.
As shown in fig. 1 to 3, a wall thickness adjusting device of a multi-layer coextrusion tube head comprises two symmetrically arranged end blocks 1 which are spliced with each other, a tube seat 3 concentrically embedded in the center of the front sides of the two end blocks 1, a chuck 2 detachably sleeved and fixed outside the tube seat 3, a nozzle 4 concentrically arranged in the tube seat 3, a first conical head 6 concentrically embedded in the center of the rear sides of the two end blocks 1, a second conical head 7 concentrically embedded in the center of the rear ends of the first conical head 6, a third conical head 8 concentrically embedded in the center of the rear ends of the second conical head 7, and a fourth conical head 9 concentrically embedded in the center of the rear ends of the third conical head 8; the rear end of the nozzle 4 is concentrically inserted into the first conical head 6, the second conical head 7, the third conical head 8 and the fourth conical head 9, the centers of the rear ends of the two end blocks 1 are respectively provided with a conical notch 11, the two conical notches 11 are mutually spliced, and the opening of the rear end of the tube seat 3 is mutually communicated with the bottoms of the two conical notches 11; the first conical head 6 is concentrically arranged in the two conical notches 11, the first conical counter bore 61 is formed in the center of the rear end of the first conical head 6, the second conical head 7 is concentrically arranged in the first conical counter bore 61, the second conical counter bore 71 is formed in the center of the rear end of the second conical head 7, the third conical counter bore 81 is formed in the center of the rear end of the third conical head 8, the fourth conical counter bore 91 is formed in the center of the rear end of the fourth conical head 9, the first discharging hole 63 is formed in the center of the bottom of the first conical counter bore 61, the second discharging hole 73 is formed in the center of the bottom of the second conical counter bore 71, the third discharging hole 83 is formed in the center of the bottom of the fourth conical counter bore 91, the rear end of the nozzle 4 sequentially concentrically passes through the first discharging hole 63, the second discharging hole 73, the third discharging hole 83 and the fourth discharging hole 93 and the inner wall of the fourth discharging hole 93, and the third discharging hole 93 extend into the inner wall of the fourth conical counter bore 63 and the fourth discharging hole 93, and the third discharging hole 93 are spaced from each other, and the third discharging hole and the fourth discharging hole 93 and the inner wall of the fourth discharging hole 93 are formed at certain intervals.
The rear end opening of the tube seat 3 is formed with a first conical opening 31, correspondingly, the front end of the nozzle 4 is outwards formed with a conical head 41, the conical head 41 is concentrically arranged in the first conical opening 31, the end part of the conical head 41 is outwards formed with a straight tube part 42, and the straight tube part 42 is concentrically arranged inside the front end opening of the tube seat 3.
The wall thickness regulating device of the multi-layer co-extrusion light pipe machine head further comprises an air inlet pipe 5, and one end of the air inlet pipe 5 is concentrically inserted into a fourth discharging hole 93 forward and fixed at the rear end of the nozzle 4.
A discharge channel 43 is arranged between the centers of the front end and the rear end of the nozzle 4, a reamer part 44 is formed in the rear end opening of the discharge channel 43, and the reamer part 44 is communicated with the air inlet pipe 5.
The opening part of the first discharging hole 63 is outwards formed with a first annular flanging 62, the opening part of the second discharging hole 73 is outwards formed with a second annular flanging 72, the opening part of the third discharging hole 83 is outwards formed with a third annular flanging 82, the opening part of the fourth discharging hole 93 is outwards formed with a fourth annular flanging 92, and the fourth annular flanging 92, the third annular flanging 82, the second annular flanging 72 and the first annular flanging 62 are sequentially concentrically arranged from outside to inside.
Working principle: fixing the two end blocks 1 on the machine head, sleeving four layers of discharge nozzles on the machine head outside the fourth annular flanging 92, the third annular flanging 82, the second annular flanging 72 and the first annular flanging 62 respectively, and simultaneously inserting the air inlet pipe 5 into the machine head to be connected with a corresponding air outlet pipeline; the molten material sprayed from one discharge nozzle of the outermost layer is sprayed forwards through a gap between the outer wall of the first conical head 6 and the inner walls of the two conical gaps 11, and then is extruded outwards through a gap between the straight cylinder part 42 and the front end opening of the tube seat 3 to form a light pipe of the outermost layer; simultaneously, the molten material sprayed out of one discharge nozzle of the secondary outer layer is sprayed forward through a gap between the inner wall of the first conical counter bore 61 and the outer wall of the second conical head 7, then enters into a gap between the first conical mouth 31 and the conical head 41 through the first discharge hole 63, finally is extruded outwards through a gap between the straight barrel part 42 and the front end opening of the tube seat 3 to form an outermost layer of light pipes, and other layers of light pipes are extruded and molded according to the method; the high-pressure air enters the reamer part 44 through the air inlet pipe 5 and is blown out through the discharging channel 43 to assist the extrusion molding of each layer of light pipe; the above principles are all prior art.
When the wall thickness of one light pipe at the outermost layer needs to be adjusted, the position of the first conical head 6 is moved forwards or backwards concentrically to adjust the size of a gap between the first conical head 6 and the inner walls of the two conical gaps 11, so that the unit area of molten materials flowing through the gap between the first conical head 6 and the inner walls of the two conical gaps 11 is adjusted, and the wall thickness is adjusted; likewise, moving the position of the first, second, third and fourth conical heads 6, 7, 8 and 9 concentrically forward or backward allows the wall thickness of the light pipe in the respective layers to be adjusted in the same manner.
The invention can independently adjust the wall thickness of each layer of light pipe according to the requirement, thereby improving the applicability in a large scale, and the light pipes with different wall thicknesses can be formed by manufacturing a set of extrusion heads for production enterprises, thereby reducing the invested funds of the production enterprises as much as possible, and further effectively reducing the production cost.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; while the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that modifications may be made to the techniques described in the foregoing embodiments, or that certain features may be substituted for those illustrated therein; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (5)

1. The wall thickness adjusting device of the multi-layer co-extrusion optical tube head is characterized by comprising two symmetrically arranged end blocks which are spliced with each other, a tube seat which is concentrically embedded in the center of the front sides of the two end blocks, a chuck which is detachably sleeved and fixed outside the tube seat, a nozzle which is concentrically arranged in the tube seat, a first conical head which is concentrically embedded in the center of the rear sides of the two end blocks, a second conical head which is concentrically embedded in the center of the rear ends of the first conical head, a third conical head which is concentrically embedded in the center of the rear ends of the second conical head, and a fourth conical head which is concentrically embedded in the center of the rear ends of the third conical head; the rear end of the nozzle is concentrically inserted into the first conical head, the second conical head, the third conical head and the fourth conical head, the centers of the rear ends of the two end blocks are respectively provided with a conical notch, the two conical notches are mutually spliced, and the opening of the rear end of the tube seat is mutually communicated with the bottoms of the two conical notches; the first conical head is concentrically arranged in the two conical notches, the first conical counter bore is formed in the center of the rear end of the first conical head, the second conical counter bore is formed in the center of the bottom of the second conical head, the second conical counter bore is formed in the center of the rear end of the second conical head, the third conical counter bore is formed in the center of the rear end of the third conical head, the fourth conical counter bore is concentrically formed in the center of the third conical counter bore, the fourth conical counter bore is formed in the center of the rear end of the fourth conical head, the first discharging hole is formed in the center of the bottom of the first conical counter bore, the second discharging hole is formed in the center of the bottom of the second conical counter bore, the third discharging hole is formed in the center of the bottom of the fourth conical counter bore, the fourth discharging hole is formed in the center of the bottom of the fourth conical counter bore, the rear end of the nozzle sequentially concentrically penetrates through the first discharging hole, the second discharging hole, the third discharging hole and the fourth discharging hole and extend into the inside of the fourth conical counter bore, and the third discharging hole and the fourth discharging hole are spaced from the inner wall of the fourth discharging hole and the fourth discharging hole.
2. The wall thickness adjusting device of the multi-layer co-extrusion head according to claim 1, wherein a first conical opening is formed at the rear end opening of the tube seat, correspondingly, a conical head is formed outwards at the front end of the nozzle, the conical head is concentrically arranged in the first conical opening, a straight tube portion is formed outwards at the end of the conical head, and the straight tube portion is concentrically arranged inside the front end opening of the tube seat.
3. The wall thickness adjusting apparatus of a multi-layered coextruding tube head of claim 2 further comprising an air inlet tube having one end concentrically inserted forward into the fourth discharge orifice and secured to the rear end of the nozzle.
4. A wall thickness adjusting device for a multi-layer co-extrusion head as claimed in claim 3, wherein a discharge channel is provided between the centers of the front and rear ends of the nozzle, a reamer part is formed in the rear end opening of the discharge channel, and the reamer part is mutually communicated with the air inlet pipe.
5. The wall thickness adjusting device of the multi-layer co-extrusion die head according to claim 4, wherein a first annular flange is formed outwards at the opening of the first discharge hole, a second annular flange is formed outwards at the opening of the second discharge hole, a third annular flange is formed outwards at the opening of the third discharge hole, a fourth annular flange is formed outwards at the opening of the fourth discharge hole, and the fourth annular flange, the third annular flange, the second annular flange and the first annular flange are sequentially and concentrically arranged from outside to inside.
CN202111503842.5A 2021-12-09 2021-12-09 Wall thickness adjusting device of multi-layer co-extrusion light pipe machine head Pending CN116252450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111503842.5A CN116252450A (en) 2021-12-09 2021-12-09 Wall thickness adjusting device of multi-layer co-extrusion light pipe machine head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111503842.5A CN116252450A (en) 2021-12-09 2021-12-09 Wall thickness adjusting device of multi-layer co-extrusion light pipe machine head

Publications (1)

Publication Number Publication Date
CN116252450A true CN116252450A (en) 2023-06-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111503842.5A Pending CN116252450A (en) 2021-12-09 2021-12-09 Wall thickness adjusting device of multi-layer co-extrusion light pipe machine head

Country Status (1)

Country Link
CN (1) CN116252450A (en)

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