CN105365208A - Core rod body of film blowing machine - Google Patents
Core rod body of film blowing machine Download PDFInfo
- Publication number
- CN105365208A CN105365208A CN201510752403.6A CN201510752403A CN105365208A CN 105365208 A CN105365208 A CN 105365208A CN 201510752403 A CN201510752403 A CN 201510752403A CN 105365208 A CN105365208 A CN 105365208A
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- CN
- China
- Prior art keywords
- circular cylinder
- mandrel body
- manufacturing machine
- film manufacturing
- inflation film
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- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention relates to a core rod body of a film blowing machine. The core rod body comprises a round barrel (1) and a fixed base (2). The fixed base (2) is perpendicular to the lower portion of the round barrel (1) and extends outwards. The round barrel (1) and the fixed base (2) are integrally formed. A spiral groove (3) is formed in the bottom end of the outer side wall of the round barrel (1). The middle of the bottom of the round barrel (1) is provided with an axial connecting hole (4) inwards. The fixed base (2) is of a step structure. Due to the fact that the core rod body is provided with the spiral channel, raw materials are squeezed along the spiral groove from the position below a machine head to ascend and enter a buffer groove after being converged, and then molded sections are evenly extruded in an equipressure and equivalent manner.
Description
Technical field
The present invention relates to inflation film manufacturing machine field, particularly a kind of mandrel body of inflation film manufacturing machine.
Background technology
Mandrel body is at the vitals being blown-film die, have at film blow molding field and develop widely and apply, the mandrel body how designing function admirable is fast and accurately an important developing direction, in the design of traditional inflation film manufacturing machine mandrel body, people usually by virtue of experience design, and then repeatedly repair a die in die trial process, test, mandrel body is finally made to meet the requirement of production, but it is long that this method for designing manufactures and designs the cycle, and the human and material resources of die trial and the at substantial that repairs a die and financial resources, be not suitable with the needs of develop rapidly already.
Existing mandrel body is that material by extruding from extruder is by head neck, vertical inlet port mould, then cavity is formed around mandrel body and handpiece body, upwards extrude quantitatively from mouth mould after dashpot, form film pipe-shaped membrane embryo, but the shortcoming of this mandrel body is: 1. mouthful mould discharging speed is uneven, very fast near feeding mouth end stream, finished film thickness error is larger; 2. under the effect of stream pressure, mandrel body easily tilts to the action direction of power, makes film thickness thick in charging lateral deviation.
For above-mentioned technical problem, therefore need to improve.
Summary of the invention
The technical problem to be solved in the present invention is for the deficiencies in the prior art, propose a kind of even at mouth mould discharging speed, finished film Thickness Strength and transparency better, under the effect of stream pressure, mandrel body uniform force, and the mandrel body operating inflation film manufacturing machine easy for installation.
In order to solve the problems of the technologies described above, the present invention is achieved in that a kind of mandrel body of inflation film manufacturing machine, comprises circular cylinder, with the outward extending holder of this circular cylinder lower vertical; This circular cylinder and holder one-body molded; The lateral wall bottom of this circular cylinder is formed with helicla flute, and the centre position, bottom of this circular cylinder inwardly offers axial connecting hole, this holder is step-like structure, comprises and tops bar and get out of a predicament or an embarrassing situation; This upper surface of topping bar and circular cylinder be provided with helicla flute be connected, and form some tap holes circulated for film material topping bar between interior and connecting hole, in this circular cylinder top, be provided with a radial uncovered pressure buffer cavity.
As a preferred embodiment of the present invention, described in get out of a predicament or an embarrassing situation in be formed with at least 2 for connecting a kind of through hole of connecting rod, this through hole is equidistantly laid.
As a preferred embodiment of the present invention, described helicla flute is that shape of threads is arranged, and is the helix of plane systematic, and this helicla flute is arranged in reducing gradually by the thread pitch of entrance point to the port of export.
As a preferred embodiment of the present invention, the angle of described tap hole and horizontal plane is 30 ° ~ 50 °, in this tap hole symmetry is equidistantly formed at and tops bar.
As a preferred embodiment of the present invention, the upper end of described connecting hole with get out of a predicament or an embarrassing situation upper end surface on same level line.
As a preferred embodiment of the present invention, the longitudinal length of described helicla flute in circular cylinder is not more than 1/2 of this circular cylinder length.
As a preferred embodiment of the present invention, described in the height of topping bar be 1/2 of height of getting out of a predicament or an embarrassing situation.
The invention has the beneficial effects as follows: the present invention by arranging helical duct on mandrel body, and raw material is extruded rising along spiral grooves below head, enters dashpot after converging, then equably by isobaric, equivalent extrusioning shaping section.
Have the following advantages:
1. do not shunt support, film there will not be and welds line;
2. film thickness and even intensity, transparency is good;
3. ultrathin film can be produced;
4. mandrel body stress equalization, can not produce " partially " phenomenon.
5., by the optimal design to helical duct, the blown film processing of unlike material can be adapted to, effectively reduce labour intensity and the time of workman.
Accompanying drawing explanation
Fig. 1 is the structural representation of the mandrel body of a kind of inflation film manufacturing machine of the present invention.
Fig. 2 is the sectional structure chart of the mandrel body of a kind of inflation film manufacturing machine of the present invention.
Fig. 3 is that A of the present invention is to expanded view.
Fig. 4 is that B of the present invention is to structure chart.
Reference numeral in figure: circular cylinder 1, holder 2, top bar 2-1, and get out of a predicament or an embarrassing situation 2-2, helicla flute 3, connecting hole 4, tap hole 5, through hole 6, pressure buffer cavity 7, dashpot 8, shiny surface 9.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of the present invention is elaborated.
Embodiment:
As Figure 1-4: a kind of mandrel body of inflation film manufacturing machine, comprise circular cylinder 1, with the outward extending holder 2 of this circular cylinder 1 lower vertical; This circular cylinder 1 is one-body molded with holder 2; The lateral wall bottom of this circular cylinder 1 is formed with helicla flute 3, circular cylinder 1 upper end be formed with helicla flute 3 with the use of dashpot 8 and shiny surface 9; And the centre position, bottom of this circular cylinder 1 inwardly offers axial connecting hole 4, this holder 2, in step-like structure, comprises the 2-1 and the 2-2 that gets out of a predicament or an embarrassing situation that tops bar; Upper surface and the circular cylinder 1 of this 2-1 that tops bar be provided with helicla flute 3 be connected, and topping bar in 2-1 and forming some tap holes 5 circulated for film material between connecting hole 4, in this circular cylinder 1 top, be provided with a radial uncovered pressure buffer cavity 7.
Be convenient to mandrel body be fixedly connected with the connecting rod of inflation film manufacturing machine, this through hole 6 is equidistantly laid for connecting a kind of through hole 6 of connecting rod to be formed with at least 2 in this 2-2 that gets out of a predicament or an embarrassing situation, and adds stability and the firmness of connection.
Helicla flute 3 is arranged in shape of threads, is the helix of plane systematic, and this helicla flute 3 is arranged in reducing gradually by the thread pitch of entrance point to the port of export; By adopting technique scheme, improve the uniformity of each tunic material at compound tense.
The difference that combination film processes raw material and physical characteristic, this tap hole 5 is 30 ° ~ 50 ° with the angle of horizontal plane, and this tap hole 5 symmetry is equidistantly formed at tops bar in 2-1.As preferred version of the present invention, tap hole 5 is 35 ° with the angle of horizontal plane.
Ensure the maximization of this connecting hole 4 capacity, and the bulk strength of holder 2, the upper end of connecting hole 4 with get out of a predicament or an embarrassing situation 2-2 upper end surface on same level line.
Raw material is entered in dashpot 8 by helicla flute 3 extruding, then shiny surface 9 is entered equably by isobaric, equivalent extrusioning shaping section, required process time in shiny surface 9 is the longest, in order to ensure the film thickness that this raw material is produced and even intensity, transparency is good, and the longitudinal length of this helicla flute 3 in circular cylinder 1 is not more than 1/2 of this circular cylinder 1 length.
Operation principle of the present invention is: in the extrusion of raw material, plastic film raw material enters from connecting hole 4 center be arranged on bottom circular cylinder 1 under the effect of inflation film manufacturing machine, by tap hole 5, plastic film raw material is divided into some plumes to each helicla flute 3, plastic film raw material is made to change a flow direction, after plastic film raw material enters helicla flute 3, plastic film raw material continues flow forward, and now, plastic film raw material presents the flowing of both direction.Wherein a part of plastic film raw material makes axial flow by the gap between circular cylinder 1 top and pressure buffer cavity 7, another part then continues rotational flow forward in helicla flute 3, do the material of rotational flow successively by dashpot 8 and shiny surface 9, shoal along with helicla flute 3 and reduce gradually, until disappear.The plastic film raw material of such flowing produces laminar flow superposition, thus material in head is overlapped, then dashpot setting zone, finally flows out head and forms film embryo.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Although more employ Reference numeral circular cylinder 1 in figure, holder 2 herein, top bar 2-1, and get out of a predicament or an embarrassing situation 2-2, helicla flute 3, connecting hole 4, tap hole 5, through hole 6, pressure buffer cavity 7, dashpot 8, shiny surface 9.Deng term, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (7)
1. a mandrel body for inflation film manufacturing machine, comprises circular cylinder (1), with the outward extending holder of this circular cylinder (1) lower vertical (2); This circular cylinder (1) is one-body molded with holder (2); It is characterized in that: the lateral wall bottom of this circular cylinder (1) is formed with helicla flute (3), and the centre position, bottom of this circular cylinder (1) inwardly offers axial connecting hole (4), this holder (2), in step-like structure, comprises and tops bar (2-1) and get out of a predicament or an embarrassing situation (2-2); The upper surface that this is topped bar (2-1) and circular cylinder (1) be provided with helicla flute (3) be connected, and topping bar in (2-1) and forming some tap holes (5) circulated for film material between connecting hole (4), in this circular cylinder (1) top, be provided with a radial uncovered pressure buffer cavity (7).
2. the mandrel body of a kind of inflation film manufacturing machine according to claim 1, is characterized in that: described in get out of a predicament or an embarrassing situation in (2-2) and be formed with at least 2 for connecting a kind of through hole (6) of connecting rod, this through hole (6) is equidistantly laid.
3. the mandrel body of a kind of inflation film manufacturing machine according to claim 1, is characterized in that: described helicla flute (3) is arranged in shape of threads, is the helix of plane systematic, and this helicla flute (3) is arranged in reducing gradually by the thread pitch of entrance point to the port of export.
4. the mandrel body of a kind of inflation film manufacturing machine according to claim 1, is characterized in that: described tap hole (5) is 30 ° ~ 50 ° with the angle of horizontal plane, and this tap hole (5) symmetry is equidistantly formed at tops bar in (2-1).
5. the mandrel body of a kind of inflation film manufacturing machine according to claim 1, is characterized in that: the upper end of described connecting hole (4) with get out of a predicament or an embarrassing situation (2-2) upper end surface on same level line.
6. the mandrel body of a kind of inflation film manufacturing machine according to claim 3, is characterized in that: the longitudinal length of described helicla flute (3) in circular cylinder (1) is not more than 1/2 of this circular cylinder (1) length.
7. the mandrel body of a kind of inflation film manufacturing machine according to claim 2 or 4, is characterized in that: described in the top bar height of (2-1) be 1/2 of height of getting out of a predicament or an embarrassing situation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510752403.6A CN105365208A (en) | 2015-11-06 | 2015-11-06 | Core rod body of film blowing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510752403.6A CN105365208A (en) | 2015-11-06 | 2015-11-06 | Core rod body of film blowing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105365208A true CN105365208A (en) | 2016-03-02 |
Family
ID=55368081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510752403.6A Pending CN105365208A (en) | 2015-11-06 | 2015-11-06 | Core rod body of film blowing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105365208A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106827481A (en) * | 2017-01-17 | 2017-06-13 | 瑞安市铭德机械有限公司 | Film blowing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203557705U (en) * | 2013-11-18 | 2014-04-23 | 王根乐 | Film leading device of film-out mould of film blowing machine |
| CN205075328U (en) * | 2015-11-06 | 2016-03-09 | 嘉兴市高正高分子材料有限公司 | Plug body of inflation film manufacturing machine |
-
2015
- 2015-11-06 CN CN201510752403.6A patent/CN105365208A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203557705U (en) * | 2013-11-18 | 2014-04-23 | 王根乐 | Film leading device of film-out mould of film blowing machine |
| CN205075328U (en) * | 2015-11-06 | 2016-03-09 | 嘉兴市高正高分子材料有限公司 | Plug body of inflation film manufacturing machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106827481A (en) * | 2017-01-17 | 2017-06-13 | 瑞安市铭德机械有限公司 | Film blowing device |
| CN106827481B (en) * | 2017-01-17 | 2022-09-30 | 瑞安市铭德机械有限公司 | Film blowing equipment |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160302 |
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| RJ01 | Rejection of invention patent application after publication |