CN110385845A - A kind of double tube extrusion die - Google Patents
A kind of double tube extrusion die Download PDFInfo
- Publication number
- CN110385845A CN110385845A CN201910674295.3A CN201910674295A CN110385845A CN 110385845 A CN110385845 A CN 110385845A CN 201910674295 A CN201910674295 A CN 201910674295A CN 110385845 A CN110385845 A CN 110385845A
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- Prior art keywords
- pipe
- mould pipe
- mould
- feed inlet
- tube
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Classifications
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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
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/005—Hoses, i.e. flexible
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of double tube extrusion dies, including mould pipe, mould tube axis direction one end is set as feed inlet one, the mould inner coaxial tube is fixed with tube core, interior die sleeve is coaxially fixed with outside the tube core and in being located in mould pipe, internal annular compartment is formed between the interior die sleeve and tube core, the interior die sleeve is outer and is coaxially fixed with outer die casing in mould pipe, outer central spacer is formed between the outer die casing and interior die sleeve, the side wall of the mould pipe offers feed inlet two, the charging through slot for being connected to feed inlet two and feed inlet one is offered on the outer die casing, one end of the tube core is extended to across outer die casing.The present invention, which has from feed inlet one and feed inlet two, inputs glue into mould pipe, and glue successively forms inner tube and outer tube in mould pipe, promotes the effect of the production efficiency of double tube.
Description
Technical field
The present invention relates to the technical fields of sebific duct production, more particularly, to a kind of double tube extrusion die.
Background technique
Mold be in industrial production to be molded, be blow molded, squeeze out, the side such as die casting or forging and forming, smelting, punching press, stretching
Method obtains the various moulds and tool of required product.In brief, mold is the tool for formed article, and this tool is by each
Kind part is constituted, and different molds is made of different parts, it is mainly by the change of physical state of the formed material come real
The processing of existing article shape.
The manufacture of existing double tube all uses two big extruder and two molds, first using extruder and
One set of die makes interior sebific duct, then again using another extruder and another mold outside one layer of outer bread of interior sebific duct
Sebific duct, such shaping speed is slow, and production efficiency is low.
Summary of the invention
The object of the present invention is to provide a kind of double tube extrusion dies, defeated into mould pipe from feed inlet one and feed inlet two
Enter glue, glue successively forms inner tube and outer tube in mould pipe, promotes the production efficiency of double tube.
Foregoing invention purpose of the invention has the technical scheme that
A kind of double tube extrusion die, including mould pipe, mould tube axis direction one end are set as feed inlet one, the mould pipe
Interior to be coaxially fixed with tube core, the tube core is outer and interior die sleeve is coaxially fixed in being located in mould pipe, the interior die sleeve and tube core it
Between form internal annular compartment, the interior die sleeve is outer and is located in mould pipe and is coaxially fixed with outer die casing, the outer die casing and interior die sleeve it
Between form outer central spacer, the side wall of the mould pipe offers feed inlet two, offers on the outer die casing for being connected to feed inlet
Two and feed inlet one charging through slot, one end of the tube core is extended to across outer die casing.
By using above-mentioned technical proposal, rubber is inputted into mould pipe from feed inlet one and feed inlet two respectively, from charging
The rubber that mouth one is passed through passes through internal annular compartment again, and tube core periphery forms inner tube, the rubber being passed through from feed inlet two, then passes sequentially through
Charging through slot and outer central spacer and the periphery for being wrapped in inner tube form outer tube, and inner tube and outer tube constitute double tube, realize and synchronize
The purpose for forming inner tube and outer tube, promotes the production efficiency of double tube.
The present invention is further arranged to: being provided with connecting rod between the tube core periphery and mould pipe, is opened up on the mould pipe
There is air inlet, the tube core is interior to offer outlet pipe along its axis direction, is provided in the connecting rod for being connected to air inlet
The connecting pipe of mouth and outlet pipe.
High temperature and pressure gas is inwardly conveyed from air inlet while double tube production by using above-mentioned technical proposal
Body, high temperature and high pressure gas are exported by outlet pipe, so that being constantly full of in molding sebific duct has gas, reduce just molding sebific duct
The situation that bending causes inner tube to bond occurs to occur, promotes yield rate.
The present invention is further arranged to: it is extended with the screwed pipe coaxial with mould pipe in the connecting rod, the one of the tube core
End is threadedly connected in screwed pipe.
By using above-mentioned technical proposal, the threaded one end of tube core is connected in screwed pipe, realizes tube core in mould pipe
It is detachably connected, replaces the tube core of different thicknesses, change the size of internal annular compartment, and then form various sizes of inner tube.
The present invention is further arranged to: being coaxially extended with mounting ring outside the interior die sleeve, the mounting ring periphery is connected to
Mould inside pipe wall, one end of the mounting ring towards mould pipe offer mounting groove, offer and mounting groove pair on the mould inside pipe wall
Neat lock slots are provided with Lock spring and locking pin in the mounting groove, and the Lock spring, which has, pushes locking pin insertion
The trend of lock slots.
By using above-mentioned technical proposal, when interior die sleeve is installed in mould pipe, when locking pin is aligned with lock slots,
Lock spring pushes locking pin part to be embedded in lock slots, realizes interior fixed installation of the die sleeve in mould pipe.
The present invention is further arranged to: sliding is provided with the unlock pin abutted with locking pin, the mould in the lock slots
Its axis direction is provided with sliding slot in pipe, the sliding slot is connected to lock slots, and sliding is embedded with push rod in the sliding slot, described
Push rod is provided with lead-in chamfered close to one end of lock slots, and the lead-in chamfered is towards lock slots, and the lead-in chamfered and solution
It is slid against between lock pin, is extended with driving lever to mould pipe outside on the push rod, offers on the mould pipe for avoiding driving lever
Mobile escape groove.
By using above-mentioned technical proposal, when needing to remove interior die sleeve, push driving lever to one Slideslip of lock slots, so that
Push rod squeezes unlock pin and moves to outside lock slots, and then locking pin is released lock slots, and convenient realize controls tearing open for interior die sleeve
Dress, and interior fixed installation of the die sleeve in mould pipe is unlocked, interior detachable installation of the die sleeve in mould pipe is realized, by replacing not
The interior die sleeve of same size changes the size of internal annular compartment and then realizes the various sizes of inner tube of production, and is convenient for internal die sleeve
Cleaning, promoted production inner tube quality；And.
The present invention is further arranged to: the sliding slot is connected to setting with air inlet, and the push rod is towards one end of air inlet
It is extended with opening and closing plate, offers through-hole on the opening and closing plate, when locking pin is embedded in lock slots, the through-hole and air inlet
Alignment connection.
By using above-mentioned technical proposal, when interior die sleeve is fixed in mould pipe, the through-hole and air inlet opened and closed on plate connects
It is logical, enable gas to pass sequentially through through-hole and enter in connecting pipe, bilateral sebific duct is avoided to deform；When needs remove interior die sleeve
When, driving lever is pushed, push rod drives opening and closing plate sliding, so that through-hole and air inlet misplace, opening and closing plate blocks gas to enter connecting tube
Road avoids gas from exporting the operator that burns from outlet pipe, realizes die sleeve in safe dismounting.
The present invention is further arranged to: support spring is provided in the sliding slot, one end of the support spring is connected to
Open and close the one end of plate far from push rod, the useful trend for pushing opening and closing plate to slide to locked groove of the support spring.
By using above-mentioned technical proposal, support spring can stablize the movement for limiting opening and closing plate, realize and stablize blocking gas
The purpose of body circulation, promotes the safety of die sleeve in dismounting.
The present invention is further arranged to: one end of the outer die casing towards feed inlet one is circumferentially-spaced to offer the charging
Through slot, and annular groove is offered on the outer die casing, the annular groove is connected between feed inlet two and charging through slot.
By using above-mentioned technical proposal, when injecting glue from feed inlet two, glue is flowed along annular groove, then again into
Enter to feed in through slot, realizes that guidance glue uniformly includes promoting the molding quality of outer tube from inner tube periphery.
The present invention is further arranged to: mould pipe periphery has been provided at circumferentially spaced locking bolt, the locking bolt spiral shell
Line is connected on mould pipe, and one end of the locking bolt is connected to outer die casing.
By using above-mentioned technical proposal, when outer die casing to be embedded in mould pipe, locking bolt is rotated, so that locking spiral shell
Bolt is abutted with outer die casing, limits the movement of outer die casing so that feed inlet two with charging through slot stabilization be aligned, glue pass sequentially through into
Material mouth two and charging through slot enter in outer central spacer, and the periphery for then flowing to inner tube forms outer tube.
In conclusion advantageous effects of the invention are as follows:
1. the rubber being passed through from feed inlet one passes through internal annular compartment again, tube core periphery forms inner tube, the rubber being passed through from feed inlet two
Glue, then pass sequentially through charging through slot and outer central spacer and be wrapped in the periphery formation outer tube of inner tube, inner tube and outer tube constitute double-deck
Sebific duct realizes the purpose of synchronous forming inner tube and outer tube, promotes the production efficiency of double tube；
2. pushing driving lever, push rod drives opening and closing plate sliding, so that through-hole and air inlet misplace, opening and closing plate blocks gas to enter connection
Pipeline avoids gas from exporting the operator that burns from outlet pipe, realizes die sleeve in safe dismounting.
Detailed description of the invention
Fig. 1 is a kind of half-section diagram of double tube extrusion die internal structure；
Fig. 2 is the schematic diagram for embodying push rod and the hardened structure of opening and closing；
Fig. 3 is the schematic diagram for embodying external mold nested structure.
In figure, 1, mould pipe；11, feed inlet one；12, feed inlet two；13, locking bolt；15, air inlet；16, lock slots；
17, sliding slot；18, escape groove；2, tube core；21, outlet pipe；3, connecting rod；31, connecting pipe；32, screwed pipe；4, interior die sleeve；
41, internal annular compartment；5, mounting ring；51, mounting groove；52, Lock spring；53, locking pin；6, unlock pin；7, push rod；71, driving lever；
8, plate is opened and closed；81, through-hole；82, support spring；9, outer die casing；91, annular groove；92, through slot is fed；94, outer central spacer.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
As shown in Figure 1, a kind of double tube extrusion die, including the mold core component in mould pipe 1 and setting mould pipe 1, mould
Pipe 1 is cylindrical, is set as feed inlet 1 in one end of mould pipe 1, and wherein mold core component includes coaxially being fixed in mould pipe 1 to manage
Core 2, interior die sleeve 4 and outer die casing 9 constitute internal annular compartment 41 between interior die sleeve 4 and tube core 2, interior die sleeve 4 and outer die casing 9 are therewith
Between constitute outer central spacer 94, and feed inlet 2 12 is offered on 1 side wall of mould pipe, and connection is offered on outer die casing 9
The charging through slot 92 of feed inlet 2 12 and outer central spacer 94；
Rubber is inputted into mould pipe 1 from feed inlet 1 and feed inlet 2 12 respectively, the rubber being passed through from feed inlet 1 leads to again
Internal annular compartment 41 is crossed, 2 periphery of tube core forms inner tube, the rubber being passed through from feed inlet 2 12, then passes sequentially through charging 92 He of through slot
Outer central spacer 94 and the periphery for being wrapped in inner tube form outer tube, and inner tube and outer tube constitute double tube, realize synchronous forming inner tube
With the purpose of outer tube, the production efficiency of double tube is promoted.
As shown in Figure 1, being extended with connecting rod 3 close to one end of feed inlet 1 is circumferentially-spaced in mould pipe 1, connecting rod 3 is equal
Along the setting that radially extends of mould pipe 1, connecting rod 3 converges the shaft core position for being fixedly connected on mould pipe 1, and prolongs in the shaft core position
Stretching has screwed pipe 32, and screwed pipe 32 is coaxial with mould pipe 1 and extends into mould pipe 1, and the threaded one end of tube core 2 is connected to screwed pipe 32
In, it realizes being detachably connected in mould pipe 1 of tube core 2, replaces the tube core 2 of different thicknesses, change the size of internal annular compartment 41, into
And form various sizes of inner tube.
And it is coaxially arranged with outlet pipe 21 in tube core 2, air inlet 15 is offered on the outer wall of mould pipe 1, wherein one
Connecting pipe 31 is provided in a connecting rod 3, the both ends of connecting pipe 31 are connected to air inlet 15 and outlet pipe 21 respectively；In
While double tube produces, from air inlet 15, inwardly conveying high temperature and high pressure gas, high temperature and high pressure gas pass through outlet pipe 21
Output reduces just molding sebific duct and the situation that bending causes inner tube to bond occurs so that being constantly full of in molding sebific duct has gas
Occur, promotes yield rate.
As depicted in figs. 1 and 2, it is coaxially extended with mounting ring 5 in the periphery of interior die sleeve 4, the periphery of mounting ring 5 is connected to mould
The inner wall of pipe 1 circumferentially offers mounting groove 51 towards one end of mould pipe 1 in mounting ring 5 at equal intervals, opens on the inner wall of mould pipe 1
Equipped with the lock slots 16 being aligned with mounting groove 51, and Lock spring 52 is embedded in mounting groove 51,52 one end of Lock spring
It is connected to the one end of locking pin 53 far from lock slots 16；When interior die sleeve 4 to be installed in mould pipe 1, when locking pin 53 and locking
When slot 16 is aligned, Lock spring 52 pushes 53 part of locking pin to be embedded in lock slots 16, realizes interior die sleeve 4 in mould pipe 1
It is fixedly mounted.And sliding is provided with unlock pin 6 in the lock slots of mould pipe 1 16, slides unlock pin 6, by locking pin 53 from lock
Determine to eject in slot 16, unlock interior fixed installation of the die sleeve 4 in mould pipe 1, realizes interior detachable installation of the die sleeve 4 in mould pipe 1,
By replacing the interior die sleeve 4 of different sizes, changing the size of internal annular compartment 41 and then realizing the various sizes of inner tube of production, and
Convenient for the cleaning of internal die sleeve 4, the quality of production inner tube is promoted.
As shown in Figure 1, the sliding slot 17 being connected to lock slots 16 is wherein offered in mould pipe 1, axis of the sliding slot 17 along mould pipe 1
Xiang Bingxiang feed inlet 1 extends, and push rod 7, the one end and direction of push rod 7 close to lock slots 16 are slidably fitted in sliding slot 17
The side of unlock pin 6 is provided with lead-in chamfered, and lead-in chamfered slides against far from one end of locking pin 53 with unlock pin 6, pushing away
It is extended with driving lever 71 to the outside of mould pipe 1 on bar 7, driving lever 71 is pierced by mould pipe 1, and it is mobile that evacuation driving lever 71 is offered on mould pipe 1
Escape groove 18, escape groove 18 be in kidney slot；In need to remove when die sleeve 4, push driving lever 71 to 16 1 Slideslip of lock slots,
So that push rod 7 squeezes unlock pin 6 and moves to outside lock slots 16, and then releases lock slots 16 for locking pin 53, it is convenient to realize control
The dismounting of die sleeve 4 in making.
And sliding slot 17 is connected to the air inlet 15 on mould pipe 1, is extended with opening and closing close to one end of air inlet 15 in push rod 7
Plate 8 opens and closes and offers through-hole 81 on plate 8, and is embedded with support spring 82 in sliding slot 17, and support spring 82 is connected to opening and closing
The one end of plate 8 far from push rod 7；When interior die sleeve 4 is fixed in mould pipe 1, the through-hole 81 opened and closed on plate 8 is connected to air inlet 15,
Gas to pass sequentially through through-hole 81 to enter in connecting pipe 31, bilateral sebific duct is avoided to deform；When needs remove interior die sleeve 4
When, push driving lever 71, push rod 7 drives opening and closing plate 8 to slide so that through-hole 81 and air inlet 15 misplace, opening and closing plate 8 block gas into
Enter connecting pipe 31, gas is avoided to export the operator that burns from outlet pipe 21, realizes die sleeve 4 in safe dismounting, and prop up
Support spring 82 can stablize the movement for limiting opening and closing plate 8, realize the purpose stablized and block gas circulation, promote die sleeve 4 in dismounting
Safety.
As shown in figures 1 and 3, the periphery of outer die casing 9 fits in the inner wall of mould pipe 1, is circumferentially arranged at intervals on mould pipe 1
Locking bolt 13, locking bolt 13 radially extending and being threadedly connected on mould pipe 1 along mould pipe 1, and outer die casing 9 is being embedded at mould
When in pipe 1, locking bolt 13 is rotated, so that locking bolt 13 is abutted with outer die casing 9, limits the movement of outer die casing 9, so that charging
Mouth 2 12 is aligned with the charging stabilization of through slot 92, and glue passes sequentially through feed inlet 2 12 and charging through slot 92 into outer central spacer 94
In, the periphery for then flowing to inner tube forms outer tube.
And several charging through slots 92 are offered towards the circumferentially-spaced of one end of feed inlet 1 in outer die casing 9, simultaneously
Annular groove 91, the connection charging of annular groove 91 one end of through slot 92 far from 9 axis of outer die casing are offered on outer die casing 9；When from into
When material mouth 2 12 injects glue, glue is flowed along annular groove 91, is then entered back into charging through slot 92, realizes that guidance glue is uniform
Slave inner tube periphery include, promoted the molding quality of outer tube.
The implementation principle of the present embodiment are as follows:
Rubber is inputted into mould pipe 1 from feed inlet 1 and feed inlet 2 12, the rubber being passed through from feed inlet 1 passes through interior again
Central spacer 41,2 periphery of tube core form inner tube, the rubber being passed through from feed inlet 2 12, then pass sequentially through charging through slot 92 and outer ring
The interval 94 and periphery for being wrapped in inner tube forms outer tube, inner tube and outer tube constitute double tube, realize synchronous forming inner tube and outer
The purpose of pipe promotes the production efficiency of double tube.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (9)
1. a kind of double tube extrusion die, it is characterised in that: including the mold core group in mould pipe (1) and setting mould pipe (1), institute
It states mould pipe (1) axis direction one end and is set as feed inlet one (11), be coaxially fixed with tube core (2), the pipe in the mould pipe (1)
Core (2) is coaxially fixed with interior die sleeve (4) outside and in being located in mould pipe (1), between the interior die sleeve (4) and tube core (2) in formation
Central spacer (41), the interior die sleeve (4) outside and be located at mould pipe (1) in be coaxially fixed with outer die casing (9), the outer die casing (9) with
Outer central spacer (94) is formed between interior die sleeve (4), the side wall of the mould pipe (1) offers feed inlet two (12), the outer die casing
(9) the charging through slot (92) for being connected to feed inlet two (12) and feed inlet one (11), one end of the tube core (2) are offered on
It extends to across outer die casing (9).
2. a kind of double tube extrusion die according to claim 1, it is characterised in that: tube core (2) periphery and mould
It is provided with connecting rod (3) between pipe (1), is offered air inlet (15) on the mould pipe (1), along its axis in the tube core (2)
Direction offers outlet pipe (21), is provided in the connecting rod (3) for being connected to air inlet (15) and outlet pipe (21)
Connecting pipe (31).
3. a kind of double tube extrusion die according to claim 2, it is characterised in that: extend on the connecting rod (3)
There is the screwed pipe (32) coaxial with mould pipe (1), the threaded one end of the tube core (2) is connected in screwed pipe (32).
4. a kind of double tube extrusion die according to claim 2, it is characterised in that: the interior die sleeve (4) is coaxial outside
It is extended with mounting ring (5), mounting ring (5) periphery is connected to mould pipe (1) inner wall, and the mounting ring (5) is towards mould pipe (1)
One end offers mounting groove (51), and the lock slots (16) being aligned with mounting groove (51) are offered on mould pipe (1) inner wall, described
Lock spring (52) and locking pin (53) are provided in mounting groove (51), the Lock spring (52) there are promotion locking pin (53)
It is embedded in the trend of lock slots (16).
5. a kind of double tube extrusion die according to claim 4, it is characterised in that: sliding in the lock slots (16)
It is provided with the unlock pin (6) abutted with locking pin (53), its axis direction is provided with sliding slot (17), institute in the mould pipe (1)
It states sliding slot (17) to be connected to lock slots (16), sliding is embedded with push rod (7) in the sliding slot (17), and the push rod (7) is close to lock
The one end for determining slot (16) is provided with lead-in chamfered, and the lead-in chamfered is towards lock slots (16), and the lead-in chamfered and unlock
It is slid against between pin (6), is extended with driving lever (71) on the push rod (7) to mould pipe (1) outside, is opened up on the mould pipe (1)
Have for avoiding driving lever (71) mobile escape groove (18).
6. a kind of double tube extrusion die according to claim 5, it is characterised in that: the sliding slot (17) and air inlet
(15) connection setting, one end of push rod (7) towards the air inlet (15) are extended with opening and closing plate (8), open on the opening and closing plate (8)
Equipped with through-hole (81), when locking pin (53) is embedded in lock slots (16), the through-hole (81) and air inlet (15) company of alignment
It is logical.
7. a kind of double tube extrusion die according to claim 6, it is characterised in that: be provided in the sliding slot (17)
Support spring (82), one end of the support spring (82) are connected to the one end of opening and closing plate (8) far from push rod (7), the support
The useful trend for pushing opening and closing plate (8) to slide to locked groove of spring (82).
8. a kind of double tube extrusion die according to claim 1, it is characterised in that: the outer die casing (9) towards into
One end of material mouth one (11) is circumferentially-spaced to offer the charging through slot (92), and offers annular groove on the outer die casing (9)
(91), the annular groove (91) is connected between feed inlet two (12) and charging through slot (92).
9. a kind of double tube extrusion die according to claim 1, it is characterised in that: mould pipe (1) periphery is circumferential
It is arranged at intervals with locking bolt (13), the locking bolt (13) is threadedly connected on mould pipe (1), and the locking bolt (13)
One end be connected to outer die casing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910674295.3A CN110385845B (en) | 2019-07-25 | 2019-07-25 | Double-layer rubber pipe extrusion die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910674295.3A CN110385845B (en) | 2019-07-25 | 2019-07-25 | Double-layer rubber pipe extrusion die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110385845A true CN110385845A (en) | 2019-10-29 |
| CN110385845B CN110385845B (en) | 2021-04-02 |
Family
ID=68287148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910674295.3A Expired - Fee Related CN110385845B (en) | 2019-07-25 | 2019-07-25 | Double-layer rubber pipe extrusion die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110385845B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114196190A (en) * | 2021-12-22 | 2022-03-18 | 中为医疗科技(江苏)有限公司 | TPU-PVC medical catheter and preparation method thereof |
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| CN104742351A (en) * | 2013-12-29 | 2015-07-01 | 上海逸舟塑胶五金有限公司 | One-off forming mold of double-layer rubber tube |
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2019
- 2019-07-25 CN CN201910674295.3A patent/CN110385845B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| CN201115993Y (en) * | 2007-08-31 | 2008-09-17 | 福建南平太阳电缆股份有限公司 | Double-layer coextruded adjustable frame head |
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| CN104742351A (en) * | 2013-12-29 | 2015-07-01 | 上海逸舟塑胶五金有限公司 | One-off forming mold of double-layer rubber tube |
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| CN206855962U (en) * | 2017-07-02 | 2018-01-09 | 陕西中昌科技有限公司 | One kind is used for UPVC, CPVC tube extrusion die |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114196190A (en) * | 2021-12-22 | 2022-03-18 | 中为医疗科技(江苏)有限公司 | TPU-PVC medical catheter and preparation method thereof |
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| CN110385845B (en) | 2021-04-02 |
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