CN104400983A - Extrusion machine - Google Patents
Extrusion machine Download PDFInfo
- Publication number
- CN104400983A CN104400983A CN201410707983.2A CN201410707983A CN104400983A CN 104400983 A CN104400983 A CN 104400983A CN 201410707983 A CN201410707983 A CN 201410707983A CN 104400983 A CN104400983 A CN 104400983A
- Authority
- CN
- China
- Prior art keywords
- wear
- machine barrel
- section
- resistant sleeve
- screw rod
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- 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
- B29C48/505—Screws
- B29C48/59—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw
-
- 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
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses an extrusion machine which can reduce the friction strength of a wear-proof sleeve and prolong the service life of the wear-proof sleeve. The extrusion machine comprises a machine barrel and a screw rod arranged in the machine barrel, wherein a feed opening is formed in the machine barrel; the screw rod is formed by sequentially connecting a mixing section, an extruding section, a feeding section and a connecting section, and the connecting section is sleeved with the wear-proof sleeve; the wear-proof sleeve is fixed on the inner wall of the machine barrel; a main slag hole for communicating the outer part of the machine barrel with the inner part of the machine barrel is formed in the part, positioned at the connecting section, of the machine barrel, and an auxiliary slag hole is formed in the wear-proof sleeve; the main slag hole and the auxiliary slag hole are communicated and are used for communicating the inner part of the wear-proof sleeve with the outer part of the machine barrel; a section of reverse screw teeth is arranged on the connecting section, and the screwing direction of the reverse screw teeth is the same as the rotation direction of the screw rod. The extrusion machine has the advantages that the reverse screw teeth are arranged on the connecting section, and small amounts of moving-backward powder is conveyed to the slag hole and then discharged, so that the friction coefficient of the wear-proof sleeve and the connecting section is reduced, the wear of the wear-proof sleeve is reduced, the service life of the wear-proof sleeve is prolonged, and the production cost is reduced.
Description
Technical field
The present invention relates to extruder.
Background technology
Existing extruder, comprise machine barrel and be arranged on the screw rod in machine barrel, machine barrel is provided with charging aperture, described screw rod is by extruded segment, feed zone and linkage section are connected in turn, charging aperture is positioned at above feed zone, linkage section is arranged with wear-resistant sleeve, the position that machine barrel is positioned at linkage section is provided with the scum hole being communicated with machine barrel outside and machine barrel inside, the linkage section of screw rod is for connecting the drive unit such as motor or reductor, such extruder is when work, if the powder adopted, so powder is when entering in machine barrel from charging aperture, most powder can transport to the head of machine barrel along with the rotation of screw rod and mix, be shaped, also have a small amount of powder then can move backward, namely a small amount of powder can be mobile to the afterbody of screw rod (linkage section), and discharge machine barrel from scum hole, because linkage section and wear-resistant sleeve are close contacts, once there be powder to move backward, then will certainly move on between linkage section and wear-resistant sleeve, so can aggravate the friction between linkage section and wear-resistant sleeve, and affect the rotating speed of screw rod, even if this part powder is finally discharged from scum hole, still the service life of wear-resistant sleeve is greatly reduced, often need to change wear-resistant sleeve, extremely bother, and cost improves.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of and reduce wear-resistant sleeve frictional strength, improve the extruder in wear-resistant sleeve service life.
For solving the problems of the technologies described above, the technical solution used in the present invention is: extruder, comprise machine barrel and be arranged on the screw rod in machine barrel, machine barrel is provided with charging aperture, described screw rod is by mixing section, extruded segment, feed zone and linkage section are connected in turn, charging aperture is positioned at above feed zone, linkage section is arranged with wear-resistant sleeve, wear-resistant sleeve is fixed on machine tube inner wall, the position that machine barrel is positioned at linkage section is provided with the main scum hole being communicated with machine barrel outside and machine barrel inside, wear-resistant sleeve is provided with secondary scum hole, main scum hole communicates with secondary scum hole and is communicated with wear-resistant sleeve inside and machine barrel outside, linkage section is provided with one section of anti-thread, the length of this section of anti-thread is that end to the linkage section that linkage section is connected with feed zone is positioned at the position of secondary scum hole at wear-resistant sleeve inwall upper inlet place, and the rotation direction of anti-thread is identical with the rotation direction of screw rod.
One end of described wear-resistant sleeve communicates with machine barrel outside.
Described wear-resistant sleeve profile is T-shaped, and protruding parts, wear-resistant sleeve both sides is fixed by screws in nose.
Described mixing section is provided with along screw rod circumferencial direction the thread bar that some rows are made up of multiple toothed projections, and barrel head is connected with flange, the inwall of flange is provided with the thread groove matched with thread bar on mixing section.
The end of described mixing section is provided with conical flow guiding block, and the summit of conical flow guiding block is not on the central axis of screw rod.
The invention has the beneficial effects as follows: by arranging anti-thread on linkage section, the powder carry moved after a small amount of being delivered to scum hole, then discharging, reduce the coefficient of friction between wear-resistant sleeve and linkage section, reduce the wearing and tearing of wear-resistant sleeve, improve the service life of wear-resistant sleeve, reduce production cost.
Accompanying drawing explanation
Fig. 1 is the front view of extruder of the present invention;
Fig. 2 is the A place partial enlarged drawing of Fig. 1;
Fig. 3 is B place partial enlarged drawing in Fig. 1.
In figure: 1, machine barrel, 2, screw rod, 3, charging aperture, 4, mixing section, 5, extruded segment, 6, feed zone, 7, linkage section, 8, wear-resistant sleeve, 9, main scum hole, 10, secondary scum hole, 11, anti-thread, 12, thread bar, 13, flange, 14, conical flow guiding block.
Detailed description of the invention
Below in conjunction with accompanying drawing, describe specific embodiment of the invention scheme in detail.
As shown in Figure 1, Figure 2 and Figure 3, extruder of the present invention, the screw rod 2 comprising machine barrel 1 and be arranged in machine barrel 1, machine barrel 1 is provided with charging aperture 3, described screw rod 2 is connected in turn by mixing section 4, extruded segment 5, feed zone 6 and linkage section 7, mixing section 4 is positioned at machine barrel 1 head, and linkage section 7 is positioned at machine barrel 1 afterbody.Charging aperture 3 is positioned at above feed zone 6, linkage section 7 is arranged with wear-resistant sleeve 8, wear-resistant sleeve 8 is fixed on machine barrel 1 inwall, the position that machine barrel 1 is positioned at linkage section 7 is provided with the main scum hole 9 being communicated with machine barrel 1 outside and machine barrel 1 inside, wear-resistant sleeve 8 is provided with secondary scum hole 10, main scum hole 9 communicates with secondary scum hole 10 and is communicated with wear-resistant sleeve 8 inside and machine barrel 1 outside, linkage section 7 is provided with one section of anti-thread 11, the length of this section of anti-thread 11 is that end to the linkage section 7 that linkage section 7 is connected with feed zone 6 is positioned at the position of secondary scum hole 10 at wear-resistant sleeve 8 inwall upper inlet place, namely the powder backward moved directly is delivered to secondary scum hole 10 by anti-thread 11 after disengaging feed zone 6, and the rotation direction of anti-thread 11 is identical with the rotation direction of screw rod 2, such as screw rod 2 work turns left, the rotation direction of so anti-thread 11 is exactly left-handed.Convenient in order to dismantle wear-resistant sleeve, one end of described wear-resistant sleeve 8 communicates with machine barrel 1 outside.Described wear-resistant sleeve 8 profile is T-shaped, and protruding parts, wear-resistant sleeve 8 both sides is fixed by screws in machine barrel 1 end.Like this when wear-resistant sleeve changed by needs, as long as back out screw, extract wear-resistant sleeve 8.By arranging anti-thread 11 on linkage section 7, by the powder carry that moves after a small amount of to secondary scum hole 10, then discharged by main scum hole 9, reduce the coefficient of friction between wear-resistant sleeve 8 and linkage section 7, namely powder substantially all moves from the gap between anti-thread 11, does not contact with wear-resistant sleeve 8 as far as possible, thus reduces the wearing and tearing of wear-resistant sleeve 8, improve the service life of wear-resistant sleeve 8, reduce production cost.
Described mixing section 4 is provided with along screw rod 2 circumferencial direction the thread bar 12 that some rows are made up of multiple toothed projections, machine barrel 1 head is connected with flange 13, the inwall of flange 13 is provided with the thread groove matched with thread bar 12 on mixing section 4, as shown in Figure 2, the cross sectional shape of thread groove is identical with the cross sectional shape of thread bar 12, thread bar 12 inserts in thread groove, makes each convex surfaces of thread bar 12 equal with the distance between flange 13, can ensure that binder is closely knit like this.The end of described mixing section 4 is provided with conical flow guiding block 14, and the summit of conical flow guiding block 14 is not on the central axis of screw rod 2, namely the summit of conical flow guiding block 14 is eccentric, powder after such mixed melting, when inner screw 2 is sent, under the effect of conical flow guiding block 14, can produce the eccentric effect stirred, raw material is mixed more even, melting charge is not easy to stick on machine tube inner wall simultaneously, is conducive to the speed improving colour changing, reload, shortens its colour changing, reloads the time cycle.
Claims (5)
1. extruder, comprise machine barrel and be arranged on the screw rod in machine barrel, machine barrel is provided with charging aperture, it is characterized in that: described screw rod is by mixing section, extruded segment, feed zone and linkage section are connected in turn, charging aperture is positioned at above feed zone, linkage section is arranged with wear-resistant sleeve, wear-resistant sleeve is fixed on machine tube inner wall, the position that machine barrel is positioned at linkage section is provided with the main scum hole being communicated with machine barrel outside and machine barrel inside, wear-resistant sleeve is provided with secondary scum hole, main scum hole communicates with secondary scum hole and is communicated with wear-resistant sleeve inside and machine barrel outside, linkage section is provided with one section of anti-thread, the length of this section of anti-thread is that end to the linkage section that linkage section is connected with feed zone is positioned at the position of secondary scum hole at wear-resistant sleeve inwall upper inlet place, and the rotation direction of anti-thread is identical with the rotation direction of screw rod.
2. extruder according to claim 1, is characterized in that: one end of described wear-resistant sleeve communicates with machine barrel outside.
3. extruder according to claim 2, is characterized in that: described wear-resistant sleeve profile is T-shaped, and protruding parts, wear-resistant sleeve both sides is fixed by screws in nose.
4. extruder according to claim 1, it is characterized in that: described mixing section is provided with along screw rod circumferencial direction the thread bar that some rows are made up of multiple toothed projections, barrel head is connected with flange, the inwall of flange is provided with the thread groove matched with thread bar on mixing section.
5. extruder according to claim 1, is characterized in that: the end of described mixing section is provided with conical flow guiding block, and the summit of conical flow guiding block is not on the central axis of screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410707983.2A CN104400983A (en) | 2014-11-28 | 2014-11-28 | Extrusion machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410707983.2A CN104400983A (en) | 2014-11-28 | 2014-11-28 | Extrusion machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104400983A true CN104400983A (en) | 2015-03-11 |
Family
ID=52638680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410707983.2A Pending CN104400983A (en) | 2014-11-28 | 2014-11-28 | Extrusion machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104400983A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114012924A (en) * | 2021-11-15 | 2022-02-08 | 苏州金帝科机械设备有限公司 | Novel energy-concerving and environment-protective granulator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2177579Y (en) * | 1993-09-22 | 1994-09-21 | 靳乃玮 | Rubber reverse preventing structure for rubber extruder |
| JPH09902A (en) * | 1995-06-19 | 1997-01-07 | Mitsubishi Heavy Ind Ltd | Plasticizing and kneading device |
| KR200188436Y1 (en) * | 1997-06-03 | 2000-07-15 | 김종목 | Extruding screw |
| CN102350781A (en) * | 2011-08-31 | 2012-02-15 | 白城福佳机械制造有限公司 | Rubber extruder and feeding device thereof |
| CN204249320U (en) * | 2014-11-28 | 2015-04-08 | 苏州同大机械有限公司 | Extruder |
-
2014
- 2014-11-28 CN CN201410707983.2A patent/CN104400983A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2177579Y (en) * | 1993-09-22 | 1994-09-21 | 靳乃玮 | Rubber reverse preventing structure for rubber extruder |
| JPH09902A (en) * | 1995-06-19 | 1997-01-07 | Mitsubishi Heavy Ind Ltd | Plasticizing and kneading device |
| KR200188436Y1 (en) * | 1997-06-03 | 2000-07-15 | 김종목 | Extruding screw |
| CN102350781A (en) * | 2011-08-31 | 2012-02-15 | 白城福佳机械制造有限公司 | Rubber extruder and feeding device thereof |
| CN204249320U (en) * | 2014-11-28 | 2015-04-08 | 苏州同大机械有限公司 | Extruder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114012924A (en) * | 2021-11-15 | 2022-02-08 | 苏州金帝科机械设备有限公司 | Novel energy-concerving and environment-protective granulator |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |
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| RJ01 | Rejection of invention patent application after publication |