CN116476354A - Vacuum exhaust type rubber extruder and processing method thereof - Google Patents
Vacuum exhaust type rubber extruder and processing method thereof Download PDFInfo
- Publication number
- CN116476354A CN116476354A CN202310398013.8A CN202310398013A CN116476354A CN 116476354 A CN116476354 A CN 116476354A CN 202310398013 A CN202310398013 A CN 202310398013A CN 116476354 A CN116476354 A CN 116476354A
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- Prior art keywords
- rubber
- stop block
- exhaust
- rotary drum
- piston
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 123
- 239000005060 rubber Substances 0.000 title claims abstract description 123
- 238000003672 processing method Methods 0.000 title abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 35
- 230000008602 contraction Effects 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000001993 wax Substances 0.000 claims description 19
- 230000000903 blocking effect Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 239000012188 paraffin wax Substances 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010070 extrusion (rubber) Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010092 rubber production Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- B29C48/25—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
- B29C48/76—Venting, drying means; Degassing means
- B29C48/763—Vent constructions, e.g. venting means avoiding melt escape
-
- 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
- B29C48/76—Venting, drying means; Degassing means
- B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
- B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
- B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a vacuum exhaust type rubber extruder and a processing method thereof, the vacuum exhaust type rubber extruder comprises a cylindrical shell, a screw rod is arranged in the cylindrical shell in a penetrating way, an exhaust hole is arranged on the cylindrical shell and is connected with an exhaust chamber, a rotary drum is arranged on the cylindrical shell, two sides of the rotary drum are rotationally connected with the cylindrical shell, a radial sliding groove is arranged on the screw rod between the exhaust chamber and a feeding port, a stop block is arranged on the radial sliding groove in a sliding way, a plurality of discharging holes are arranged on the stop block, a supporting frame is arranged on the rotary drum, a piston cavity is arranged on the supporting frame, a piston is arranged in the piston cavity in a sliding way, a thermal expansion and contraction medium is arranged between the piston cavity and the piston, an adjusting rod rotationally connected with the piston is arranged in the piston cavity in a penetrating way, and the adjusting rod is in threaded fit with a screw hole on the stop block. Proper stop blocks and support frames are selected according to the type of the processed rubber, and the depth of screw holes for adjusting the screw rods to screw into the stop blocks is adjusted, so that the amount of the rubber entering the exhaust chamber is balanced with the amount of the discharged material of the discharge port, and insufficient exhaust is prevented.
Description
Technical Field
The invention belongs to the technical field of rubber extruders, and particularly relates to a vacuum exhaust type rubber extruder and a processing method thereof.
Background
When processing rubber products, the rubber materials are continuously extruded from an extruder, and then the extruded rubber materials are vulcanized to prepare products, so that the method is a common method for preparing rubber products and is widely adopted. Since a certain amount of gas component may be contained in the extruded material, air component may form bubbles and bulges in the rubber product, which results in that the rubber product cannot meet the product demand, not only affects the appearance, but also damages the strength of the product.
Therefore, some existing extruders have a vacuum exhaust function, and such vacuum exhaust extruders generally include a cylindrical casing, one side of the cylindrical casing is provided with a feed inlet, the other side is provided with a discharge outlet, a screw driven by a driving device is inserted into the cylindrical casing, a screw ridge spirally wound on a shaft portion is provided on the screw, a screw groove for feeding flow is formed between the screw ridges, the screw ridge is almost attached to the cylindrical casing, but has a minute gap, an exhaust hole is provided between the feed inlet and the discharge outlet of the cylindrical casing, the exhaust hole is connected with an exhaust chamber, the exhaust hole is connected with a vacuum air pump through a pipe, a material blocking protrusion is provided between the screw ridge on the screw between the exhaust chamber and the feed inlet, and the material blocking protrusion is connected with an adjacent ridge of the screw ridge to play a role of material blocking, and a gap is provided between the material blocking protrusion and the cylindrical casing, so that the material passing through the gap becomes very thin, thereby the air in the material can be sufficiently exhausted in the exhaust chamber.
When the extruder with the structure is used, if the fluidity of the rubber material is good, the rubber material is easy to transversely move due to the clearance between the spiral ridge part close to the discharge port side and the cylindrical shell, so that the discharged rubber amount of the discharge port is reduced, but under the condition that the fluidity of the rubber material is good, the rubber material is easy to cross the material blocking protrusion, so that the amount of the rubber which passes through the material blocking protrusion and enters the discharge port is larger than the amount of the rubber discharged from the discharge port, the rubber in the discharge port is gradually accumulated, the discharge efficiency is influenced, even the blockage is likely to happen, and the accumulated rubber is likely to be coked or thermally aged due to long-time high temperature, so that the clearance between the material blocking protrusion and the cylindrical shell is required to be small in the process of extruding the rubber material with good fluidity, so that the balance of the amount of the rubber which enters the discharge port and the discharge port is met. And under the condition that the rubber mobility is relatively poor, the rubber material is difficult to transversely move, and relatively, the discharged rubber amount of the discharge hole is relatively large, and the rubber material is difficult to cross the blocking protrusion, so that the blocking protrusion is required to be relatively low, and the gap between the blocking protrusion and the cylindrical shell is relatively large, so that the rubber amount crossing the blocking protrusion and the discharged rubber amount of the discharge hole can reach balance, but the thickness of the rubber crossing the blocking protrusion is increased, the exhaust effect is deteriorated, and the balance can only be maintained by reducing the discharge amount of the discharge hole. Therefore, different special screws are required to be designed for rubber production with different fluidity to meet the balance effect of the amount of rubber entering the exhaust chamber and the discharge amount of the discharge port.
Even so, for the same rubber, the temperature in the extruder is not stable with the operation of the extruder, and the temperature change also affects the flowability of the rubber, so even if a special screw is produced for different rubbers, the amount of rubber entering the vent chamber and the discharge amount of the discharge port cannot be balanced.
Disclosure of Invention
The invention provides a vacuum exhaust type rubber extruder and a processing method thereof, which aim at the defects of the prior art, and the vacuum exhaust type rubber extruder and the processing method thereof can adjust the quantity of rubber entering an exhaust chamber to balance the quantity of discharged material of a discharge hole during the extrusion of rubber, whether the fluidity is changed due to temperature change or the fluidity is changed due to replacement material, so that the situation of insufficient exhaust caused by overlarge thickness of rubber passing over a material blocking protrusion can be prevented.
In order to solve the technical problems, the invention is solved by the following technical scheme: the utility model provides a vacuum exhaust formula rubber extruder, includes cylindric casing, cylindric casing one side is equipped with the pan feeding mouth, and the opposite side is equipped with the discharge gate, wears to be equipped with by drive arrangement driven screw rod in the cylindric casing, is equipped with the spiral winding on the screw rod and establishes the spiral ridge on the axial region, forms the helicla flute that is used for the feed to flow between the spiral ridge, the pan feeding mouth with be equipped with the exhaust hole on the cylindric casing between the discharge gate, exhaust hole connection exhaust chamber, cylindric casing is located the front side of exhaust chamber is equipped with the rotary drum, the rotary drum both sides with cylindric casing rotates to be connected, be equipped with radial spout on the screw rod between exhaust chamber and the pan feeding mouth, radial spout slides and is provided with the dog, the dog cuts off the helicla flute, be provided with the intercommunication on the dog a plurality of discharge holes of helicla flute, be provided with the spring between the radial spout, be provided with the first gas pocket at intercommunication bottom and top on the dog, the dog top is equipped with the screw, be provided with on the rotary drum with radial spout guide channel that aligns, be provided with on the rotary drum the guide channel that the exhaust chamber is equipped with on the rotary drum the guide channel, the piston is provided with the piston is connected with the piston between the piston with the piston in the piston. When the vacuum exhaust type rubber extruder processes rubber with different mobility, the distance between the bottom of the adjusting rod and the screw hole at the top of the check block can be adjusted through the rotation of the adjusting rod, so that the distance between the bottom of the adjusting rod and the radial sliding groove is changed, the number of the discharge holes exposed out of the radial sliding groove is changed, the amount of rubber entering the exhaust chamber is changed, namely, the shorter the distance between the adjusting rod and the screw hole at the top of the check block is, the more the number of the discharge holes exposed out of the radial sliding groove is, and the more the amount of rubber entering the exhaust chamber is. Through adjusting the balance that can make the rubber volume that gets into the exhaust chamber and discharge gate discharge volume, avoid the rubber in the exhaust chamber to take place to pile up gradually, influence exhaust efficiency, even block up to prevent that piled up rubber from coking or heat aging probably because of long-time high temperature. Since the size of the discharging hole is unchanged, the air in the rubber is fully discharged in the exhaust chamber because the more and less of the rubber enters the exhaust chamber. And in the process of rubber extrusion processing, the heat expansion and contraction medium in the piston cavity can absorb the heat during processing, the expansion is carried out when the temperature rises, the piston can push the stop block inwards towards the radial sliding groove by pushing the adjusting rod, the quantity of discharge holes exposed out of the radial sliding groove is reduced, the piston contracts when the temperature decreases, the piston can pull the adjusting rod to pull the stop block outwards of the radial sliding groove, the quantity of discharge holes exposed out of the radial sliding groove is increased, so that the fluidity of the same rubber material is adapted to change when the temperature changes, namely, the fluidity is enhanced when the temperature rises, the quantity of the discharge holes is reduced to balance the quantity of rubber entering the exhaust chamber with the discharge quantity of the discharge hole, the fluidity is reduced when the temperature decreases, and the quantity of the discharge holes is increased to balance the quantity of rubber entering the exhaust chamber with the discharge quantity of the discharge hole. The vacuum exhaust type rubber extruder can be provided with a plurality of specifications of check blocks and support frames, and the replaceable support frames are arranged on the rotary drum, so that the replacement of the support frames and the check blocks can be conveniently carried out, and the production of various different types of rubber can be met.
In the above technical solution, preferably, the expansion and contraction medium is one or more of paraffin wax, polyethylene wax, EVA wax and PP wax. The temperature point and the distance of the piston movement can be accurately controlled by adopting the expansion and contraction mediums, the distance of the piston movement can be controlled by controlling the amount of the expansion and contraction mediums, and the temperature point of the piston movement can be controlled by selecting the type of wax.
In the above technical scheme, preferably, the paraffin wax, the polyethylene wax, the EVA wax and the PP wax are separated by a partition plate sleeved outside the adjusting rod. The thrust direction is more stable when various expansion and contraction mediums expand through separation of the partition plates.
In the above technical scheme, preferably, a plurality of roller mounting grooves are formed between the two sides of the rotary drum and the cylindrical shell, and rollers are arranged in the roller mounting grooves. By adopting the structure, the abrasion between the rotary drum and the cylindrical shell in the processing process is reduced.
In the above technical solution, preferably, sealing rings are disposed between both sides of the drum and the cylindrical casing. This structure is adopted to increase the sealability between the drum and the cylindrical housing.
In the above technical scheme, preferably, the rotary drum is detachably connected with the supporting frame through bolts. Make the dismouting that can be convenient between support frame and the rotary drum through bolted connection, convenient change support frame and dog.
In the above technical solution, preferably, the bottom of the radial chute is fixedly connected with the bottom of the spring. The structure prevents the spring from separating from the radial chute, and is convenient for the replacement of the supporting frame and the stop block.
In the above technical scheme, preferably, the aperture of the plurality of discharge holes is less than or equal to 0.2mm. The aperture of the discharge hole is set to be less than or equal to 0.2mm, so that the specific surface area of rubber can be enlarged, the exhaust effect in an exhaust chamber is ensured, and insufficient exhaust is avoided.
The processing method of the vacuum exhaust type rubber extruder comprises the following steps: 1) Selecting proper stop blocks and support frames according to the type of the processed rubber; 2) Screwing an adjusting rod on the support frame into a screw hole of the stop block, and adjusting the screwing depth according to the rubber type; 3) Inserting a stop block into the radial chute through the guide channel, and fixedly connecting the support frame with the rotary drum; 4) Adding a rubber material into the feed inlet, and starting the screw to carry out extrusion processing. By adopting the device and the processing method, the balance of the amount of rubber entering the exhaust chamber and the amount of discharged material of the discharge port can be realized, the rubber in the exhaust chamber is prevented from being accumulated gradually, the exhaust efficiency is influenced, even the exhaust efficiency is blocked, and the accumulated rubber is prevented from being coked or heat aged due to long-time high temperature. Since the size of the discharging hole is unchanged, the air in the rubber is fully discharged in the exhaust chamber because the more and less of the rubber enters the exhaust chamber. In addition, in the process of rubber extrusion processing, the fluidity change of the same rubber material when the temperature changes can be automatically regulated, so that the balance of the amount of rubber entering an exhaust chamber and the discharge amount of a discharge port is ensured, the vacuum exhaust type rubber extruder can be provided with a plurality of specifications of stop blocks and support frames, and the replaceable support frames are arranged on the rotary drum, so that the support frames and the stop blocks can be conveniently replaced, and the production of various different types of rubber is met.
Compared with the prior art, the invention has the following beneficial effects: by adopting the device and the processing method, the balance of the amount of rubber entering the exhaust chamber and the amount of discharged material of the discharge port can be realized, the rubber in the exhaust chamber is prevented from being accumulated gradually, the exhaust efficiency is influenced, even the exhaust efficiency is blocked, and the accumulated rubber is prevented from being coked or heat aged due to long-time high temperature. Since the size of the discharging hole is unchanged, the air in the rubber is fully discharged in the exhaust chamber because the more and less of the rubber enters the exhaust chamber. In addition, in the process of rubber extrusion processing, the fluidity change of the same rubber material when the temperature changes can be automatically regulated, so that the balance of the amount of rubber entering an exhaust chamber and the discharge amount of a discharge port is ensured, the vacuum exhaust type rubber extruder can be provided with a plurality of specifications of stop blocks and support frames, and the replaceable support frames are arranged on the rotary drum, so that the support frames and the stop blocks can be conveniently replaced, and the production of various different types of rubber is met.
Drawings
Fig. 1 is a schematic structural diagram of the support frame and the stopper according to the embodiment of the invention when removed.
Fig. 2 is a schematic cross-sectional view of an embodiment of the present invention.
FIG. 3 is a schematic cross-sectional view of the screw of FIG. 2 rotated 90 degrees in accordance with an embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of a supporting frame and a stopper according to an embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of another support frame and a stopper according to an embodiment of the present invention.
Description of the embodiments
The invention is described in further detail below with reference to the attached drawings and detailed description: referring to fig. 1 to 5, a vacuum exhaust type rubber extruder comprises a cylindrical casing 1, a feed inlet 11 is provided at one side of the cylindrical casing 1, a discharge outlet 12 is provided at the other side, a screw 2 driven by a driving device, which may be a hydraulic motor, a motor or a pneumatic motor, is provided in the cylindrical casing 1, a spiral ridge 22 spirally wound on a shaft portion 21 is provided on the screw 2, a spiral groove 23 for feeding flow is formed between the spiral ridges 22, an exhaust hole 13 is provided on the cylindrical casing 1 between the feed inlet 11 and the discharge outlet 12, the exhaust hole 13 is connected with an exhaust chamber 14, an air pump is connected to the other side of the exhaust hole 13 through a pipe, during extrusion processing, the air pump pumps air to pump the air in the rubber, the cylindrical casing 1 is provided with a drum 3 at the front side of the exhaust chamber 14, both sides of the drum 3 are rotatably connected with the cylindrical casing 1, the screw rod 2 between the exhaust chamber 14 and the feed inlet 11 is provided with a radial chute 24, the radial chute 24 is slidably provided with a stop block 4, the stop block 4 cuts off the spiral groove 23, the stop block 4 is provided with a plurality of discharge holes 41 communicated with the spiral groove 23, the discharge holes 41 are uniformly distributed longitudinally and transversely, a spring 5 is arranged between the bottom of the stop block 4 and the radial chute 24, in order to smoothly lift the stop block 4, the stop block 4 is provided with a first air hole 42 communicated with the bottom and the top, the top of the stop block 4 is provided with a screw hole 43, the rotary drum 3 is provided with a guide channel 31 aligned with the radial chute 24, the rotary drum 3 is provided with a replaceable support frame 6, the support frame 6 is provided with a piston cavity 61, a piston 62 is slidably arranged in the piston cavity 61, a thermal expansion and contraction medium is arranged between the piston cavity 61 and the piston 62, an adjusting rod 63 in rotary connection with the piston 62 is arranged in a penetrating manner, the adjusting rod 63 is in threaded fit with the screw hole 43, the support frame 6 is provided with a second air hole 64 communicating with the guide passage 31 and the outside. When rubber with different flow properties is processed by the vacuum exhaust type rubber extruder, the distance of the screw hole 43 which is screwed into the top of the stop block 4 at the bottom of the adjusting rod 63 can be adjusted by rotating the adjusting rod 63, so that the distance of the stop block 4 extending into the radial sliding groove 24 is changed, the amount of the rubber which enters the exhaust chamber 14 is changed by changing the amount of the discharge hole 41 exposed out of the radial sliding groove, namely, the shorter the distance of the adjusting rod 63 screwed into the screw hole 43 at the top of the stop block 4 is, the more the amount of the discharge hole 41 exposed out of the radial sliding groove 24 is, and the more the amount of the rubber which enters the exhaust chamber 14 is. By adjusting the balance between the amount of rubber entering the exhaust chamber 14 and the amount of discharged material from the discharge port 12, the rubber in the exhaust chamber 14 is prevented from gradually accumulating, the exhaust efficiency is prevented from being influenced, even blocked, and the accumulated rubber is prevented from being coked or heat aged due to long-time high temperature. Since the size of the discharge hole 41 is not changed, the amount of the rubber entering the exhaust chamber 14 is not increased or decreased, and the air in the rubber is not sufficiently discharged in the exhaust chamber 14. And during the process of extruding rubber, the heat expansion and cold contraction medium in the piston cavity 61 can absorb heat during processing, expand when the temperature rises, the piston 62 can push the baffle block 4 towards the inside of the radial sliding groove 24 against the adjusting rod 63, the quantity of the discharge holes 41 exposed out of the radial sliding groove 24 is reduced, shrink when the temperature falls, the piston 62 can pull the adjusting rod 63 to pull the baffle block 4 out of the radial sliding groove 24, the quantity of the discharge holes 41 exposed out of the radial sliding groove 24 is increased, so that the flowability of the same rubber material is adapted to change when the temperature changes, namely the flowability is enhanced when the temperature rises, the quantity of the discharge holes 41 is reduced to balance the quantity of rubber entering the exhaust chamber 14 with the quantity of the discharge hole 12, the flowability is reduced when the temperature falls, and the quantity of the discharge holes 41 is increased to balance the quantity of rubber entering the exhaust chamber 14 with the quantity of the discharge hole 12. The vacuum exhaust type rubber extruder can be provided with the stop blocks 4 and the support frames 6 with various specifications, and the replaceable support frames 6 are arranged on the rotary drum 3, so that the replacement of the support frames 6 and the stop blocks 4 can be conveniently carried out, and the production of various different types of rubber can be met.
In this embodiment, the expansion and contraction medium is one or more of paraffin wax, polyethylene wax, EVA wax and PP wax. Referring to fig. 4, the expansion and contraction medium is one of paraffin wax, polyethylene wax, EVA wax and PP wax, referring to fig. 5, the expansion and contraction medium is three of paraffin wax, polyethylene wax, EVA wax and PP wax, and the expansion and contraction mediums are separated by a separator 65 sleeved outside the adjusting rod 63, and the thrust direction is more stable when the expansion and contraction mediums expand by the separator separation 65.
In this embodiment, a plurality of roller mounting grooves 7 are formed between the two sides of the drum 3 and the cylindrical casing 1, and rollers 71 are disposed in the roller mounting grooves 7. With this structure, wear between the drum 3 and the cylindrical housing 1 during processing is reduced.
In this embodiment, sealing rings 72 are provided between both sides of the drum 3 and the cylindrical housing 1. This structure is adopted to increase the sealability between the drum 3 and the cylindrical housing 1.
In this embodiment, the drum 3 is detachably connected to the supporting frame 6 by bolts. Make the dismouting that can be convenient between support frame 6 and the rotary drum 3 through bolted connection, convenient change support frame 6 and dog 4.
In this embodiment, the bottom of the radial chute 24 is fixedly connected with the bottom of the spring 5. By adopting the structure, the spring 5 is prevented from being separated from the radial chute 24, and the support frame 6 and the stop block 4 are convenient to replace.
In this embodiment, the aperture of the plurality of discharge holes 41 is less than or equal to 0.2mm. The specific surface area of the rubber can be enlarged by setting the aperture of the discharge hole 41 to 0.2mm or less, thereby ensuring the exhaust effect in the exhaust chamber 14 and avoiding insufficient exhaust.
The processing method of the vacuum exhaust type rubber extruder comprises the following steps: 1) Selecting proper stop blocks 4 and supporting frames 6 according to the type of the processed rubber; 2) The adjusting rod 63 on the supporting frame 6 is screwed into the screw hole 43 of the stop block, and the screwing depth is adjusted according to the rubber type; 3) The stop block 4 is inserted into the radial chute 24 through the guide channel 31, and the support frame 6 is fixedly connected with the rotary drum 3; 4) Rubber material is added into the feed inlet, and the screw rod 2 is started for extrusion processing. By adopting the device and the processing method, the balance between the amount of rubber entering the exhaust chamber 14 and the amount of discharged material of the discharge port 12 can be realized, the rubber in the exhaust chamber 14 is prevented from being accumulated gradually, the exhaust efficiency is influenced, even the exhaust efficiency is blocked, and the accumulated rubber is prevented from being coked or heat aged due to long-time high temperature. Since the size of the discharge hole 41 is not changed, the amount of the rubber entering the exhaust chamber 14 is not increased or decreased, and the air in the rubber is not sufficiently discharged in the exhaust chamber 14. In addition, in the process of rubber extrusion processing, the fluidity change of the same rubber material when the temperature changes can be automatically regulated, so that the balance of the rubber quantity entering the exhaust chamber 14 and the discharge quantity of the discharge port 12 is ensured, the vacuum exhaust type rubber extruder can be provided with a plurality of specifications of stop blocks and support frames, and the replaceable support frames 6 are arranged on the rotary drum, so that the support frames 6 and the stop blocks 4 can be conveniently replaced, and the production of various different types of rubber is met.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. The utility model provides a vacuum exhaust formula rubber extruder, includes cylindric casing (1), cylindric casing (1) one side is equipped with pan feeding mouth (11), and the opposite side is equipped with discharge gate (12), wears to be equipped with in cylindric casing (1) by drive arrangement driven screw rod (2), is equipped with spiral ridge (22) of spiral on shaft portion (21) on screw rod (2), forms between spiral ridge (22) and is used for the mobile helicla flute (23) of feed, pan feeding mouth (11) with be equipped with exhaust hole (13) on cylindric casing (1) between discharge gate (12), exhaust hole (13) connect exhaust chamber (14), its characterized in that: the cylinder-shaped casing (1) is positioned at the front side of the exhaust chamber (14) and is provided with a rotary drum (3), two sides of the rotary drum (3) are rotationally connected with the cylinder-shaped casing (1), a radial sliding groove (24) is arranged on the screw (2) between the exhaust chamber (14) and the feeding port (11), the radial sliding groove (24) is slidably provided with a stop block (4), the stop block (4) is used for blocking the spiral groove (23), the stop block (4) is provided with a plurality of discharging holes (41) communicated with the spiral groove (23), a spring (5) is arranged between the bottom of the stop block (4) and the radial sliding groove (24), a first air hole (42) communicated with the bottom and the top is arranged on the stop block (4), a screw hole (43) is arranged on the top of the stop block (4), a guide channel (31) aligned with the radial sliding groove (24) is arranged on the stop block (3), a replaceable support frame (6) is arranged on the rotary drum (3), a piston cavity (61) is arranged on the support frame (6), a piston cavity (61) is arranged between the piston cavity (61) and a piston (61) is arranged on the piston cavity (61) and a piston (61) is arranged between the piston cavity (61), an adjusting rod (63) rotationally connected with the piston (62) is arranged in the piston cavity (61) in a penetrating mode, the adjusting rod (63) is in threaded fit with the screw hole (43), and the support frame (6) is provided with a second air hole (64) communicated with the guide channel (31) and the outside.
2. A vacuum vented rubber extruder as defined in claim 1, wherein: the expansion and contraction medium is one or more of paraffin wax, polyethylene wax, EVA wax and PP wax.
3. A vacuum vented rubber extruder as defined in claim 2, wherein: the expansion and contraction mediums are separated by a partition plate (65) sleeved outside the adjusting rod (63).
4. A vacuum vented rubber extruder as defined in claim 1, wherein: a plurality of roller mounting grooves (7) are formed between the two sides of the rotary drum (3) and the cylindrical shell (1), and rollers (71) are arranged in the roller mounting grooves (7).
5. A vacuum vented rubber extruder as defined in claim 1, wherein: sealing rings (72) are arranged between the two sides of the rotary drum (3) and the cylindrical shell (1).
6. A vacuum vented rubber extruder as defined in claim 1, wherein: the rotary drum (3) is detachably connected with the supporting frame (6) through bolts.
7. A vacuum vented rubber extruder as defined in claim 1, wherein: the bottom of the radial chute (24) is fixedly connected with the bottom of the spring (5).
8. A vacuum vented rubber extruder as defined in claim 1, wherein: the aperture of the discharge holes (41) is smaller than or equal to 0.2mm.
9. The method for processing a vacuum-vented rubber extruder as recited in claim 1, wherein: the method comprises the following steps: 1) Selecting a proper stop block (4) and a proper supporting frame (6) according to the type of the processed rubber; 2) An adjusting rod (63) on the supporting frame (6) is screwed into a screw hole (43) of the stop block, and the screwing depth is adjusted according to the rubber type; 3) Inserting a stop block (4) into the radial sliding groove (24) through the guide channel (31), and fixedly connecting the support frame (6) with the rotary drum (3); 4) Rubber material is added into a feed inlet, and a screw (2) is started for extrusion processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310398013.8A CN116476354B (en) | 2023-04-14 | 2023-04-14 | Vacuum exhaust type rubber extruder and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310398013.8A CN116476354B (en) | 2023-04-14 | 2023-04-14 | Vacuum exhaust type rubber extruder and processing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116476354A true CN116476354A (en) | 2023-07-25 |
| CN116476354B CN116476354B (en) | 2023-10-20 |
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Citations (8)
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| CN2666653Y (en) * | 2003-12-26 | 2004-12-29 | 刘月星 | Venting extruder capable of regulating output |
| WO2005087477A1 (en) * | 2004-03-16 | 2005-09-22 | Evgeniy Petrovich Barmashyn | Extrusion machine for processing of thermoplastic polymeric materials |
| JP2011255652A (en) * | 2010-06-11 | 2011-12-22 | Asahi Kasei Chemicals Corp | Production method of polyphenylene ether resin composition |
| KR20130019790A (en) * | 2011-08-18 | 2013-02-27 | 주식회사 진우인더스 | Grooved barrel typed extruder having venting apparatus |
| CN106863748A (en) * | 2015-10-19 | 2017-06-20 | 住友橡胶工业株式会社 | Extruder |
| CN109910268A (en) * | 2019-01-21 | 2019-06-21 | 佛山市美捷远电器实业有限公司 | A kind of rubber extruded device and rubber extruded method |
| CN209191250U (en) * | 2018-08-23 | 2019-08-02 | 东莞市鼎杰实业有限公司 | A kind of anti-overflow device of extruder |
| CN115739059A (en) * | 2022-12-29 | 2023-03-07 | 安徽国孚润滑油工业有限公司 | Desorption regenerating unit of useless silicone oil glue |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2666653Y (en) * | 2003-12-26 | 2004-12-29 | 刘月星 | Venting extruder capable of regulating output |
| WO2005087477A1 (en) * | 2004-03-16 | 2005-09-22 | Evgeniy Petrovich Barmashyn | Extrusion machine for processing of thermoplastic polymeric materials |
| JP2011255652A (en) * | 2010-06-11 | 2011-12-22 | Asahi Kasei Chemicals Corp | Production method of polyphenylene ether resin composition |
| KR20130019790A (en) * | 2011-08-18 | 2013-02-27 | 주식회사 진우인더스 | Grooved barrel typed extruder having venting apparatus |
| CN106863748A (en) * | 2015-10-19 | 2017-06-20 | 住友橡胶工业株式会社 | Extruder |
| CN209191250U (en) * | 2018-08-23 | 2019-08-02 | 东莞市鼎杰实业有限公司 | A kind of anti-overflow device of extruder |
| CN109910268A (en) * | 2019-01-21 | 2019-06-21 | 佛山市美捷远电器实业有限公司 | A kind of rubber extruded device and rubber extruded method |
| CN115739059A (en) * | 2022-12-29 | 2023-03-07 | 安徽国孚润滑油工业有限公司 | Desorption regenerating unit of useless silicone oil glue |
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| CN116476354B (en) | 2023-10-20 |
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