CN113334813A - Bellows processing lines - Google Patents
Bellows processing lines Download PDFInfo
- Publication number
- CN113334813A CN113334813A CN202110514679.6A CN202110514679A CN113334813A CN 113334813 A CN113334813 A CN 113334813A CN 202110514679 A CN202110514679 A CN 202110514679A CN 113334813 A CN113334813 A CN 113334813A
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- plastic
- corrugated pipe
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- winding
- water tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/18—Pleated or corrugated hoses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a corrugated pipe processing production line, which belongs to the technical field of corrugated pipe production and comprises the following components: the plastic extruder is used for carrying out hot melting on the plastic particles discharged from the charging barrel above the plastic extruder and extruding plastic strips from a discharge nozzle at the tail end of the plastic extruder; the cooling water tank is arranged at the rear end of the plastic extruder and is used for water cooling of the extruded plastic strip; the air drying mechanism is fixedly arranged at the top of the tail end of the cooling water tank and is used for draining and air drying the water-cooled plastic strip; according to the invention, the plastic corrugated pipe is formed by winding and gluing and splicing plastic strips extruded by a plastic extruder, and the plastic strips are cooled in an infiltration manner by using a cooling water tank before traction and winding, so that the plastic strips are uniformly cooled, and therefore, after the plastic corrugated pipe is processed and manufactured, the mechanical properties of different parts of a pipe body of the plastic corrugated pipe are the same, and the quality is stable; moreover, the temperature is lower after the plastic strip is processed into the finished product of the plastic corrugated pipe, so that peculiar smell can not be emitted, and the use requirements of people can be well met.
Description
Technical Field
The invention belongs to the technical field of corrugated pipe production, and particularly relates to a corrugated pipe processing production line.
Background
The corrugated pipe is a pipe with regular wave shape, the common plastic corrugated pipe is a novel light pipe with high-density polyethylene as a raw material, and has the characteristics of light weight, high pressure resistance, good toughness, quick construction, long service life and the like. And the connection is convenient and reliable, so the connector is widely applied at home and abroad.
At present, the production process equipment of the corrugated pipe is mature. But traditional bellows processing equipment is at the processing bellows in-process, and the bellows that extrusion moulding processed out cools off through spraying cooling water, and this mode cooling rate is slow, and the shaping bellows is inhomogeneous because of the cooling moreover, and the mechanical properties that causes the different positions of pipe shaft differs, and the quality is comparatively low, and the finished product gives out the peculiar smell, can not be fine satisfy people's user demand, to above-mentioned condition, need carry out technical innovation to above-mentioned current bellows processing technology.
Disclosure of Invention
The invention aims to provide a corrugated pipe processing production line to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a corrugated pipe manufacturing line, comprising:
the plastic extruder is used for carrying out hot melting on the plastic particles discharged from the charging barrel above the plastic extruder and extruding plastic strips from a discharge nozzle at the tail end of the plastic extruder;
the cooling water tank is arranged at the rear end of the plastic extruder and is used for water cooling of the extruded plastic strip;
the air drying mechanism is fixedly arranged at the top of the tail end of the cooling water tank and is used for draining and air drying the water-cooled plastic strip;
the traction mechanism is arranged at the rear end of the cooling water tank and used for drawing the air-dried plastic strips;
the winding mechanism is fixedly arranged on one side of the traction mechanism and is used for winding the drawn plastic strip;
the glue machine is fixedly arranged between the traction mechanism and the winding mechanism, and one side of the tail end of the glue machine is provided with a glue spraying nozzle for spraying glue to the winding joint of the plastic strip to promote the corrugated pipe to be adhered and molded;
a rolling shaft mechanism arranged at the rear end of the winding mechanism and used for driving the corrugated pipe subjected to adhesion forming to rotate in a single direction and round
Further, still include:
the cutting mechanism is fixedly arranged at the top of the tail end of the rolling shaft mechanism and is used for cutting off the formed corrugated pipe;
and the guiding tool is arranged at the rear end of the cutting mechanism and used for guiding the formed corrugated pipe.
Furthermore, the top of the charging barrel is fixedly provided with a suction machine for feeding plastic particles, and two sides in the cooling water tank are provided with limiting wheels A for guiding plastic strips through rotating shafts.
Further, air-dry mechanism is including welding in the box at the tail end top of cooling trough, top fixed mounting has the air dryer in the box, and both sides rotate to install the spacing wheel B that is used for moulding the strip direction in the box.
Furthermore, the traction mechanism comprises a bearing frame, a plurality of guide wheels C used for guiding the plastic strips are respectively rotatably mounted on the front side and the tail side of the bearing frame, a traction driving wheel is arranged at the bottom of one of the guide wheels C, the traction driving wheel is sleeved on an output shaft of a driving motor A, and the driving motor A is fixedly mounted on the bearing frame.
Further, winding mechanism includes the frame, frame top fixed mounting has pneumatic cylinder A, and the welding of pneumatic cylinder A bottom hydraulic pressure rod end has the workstation, install the pivot through the axle sleeve on the workstation, the one end cover of pivot is equipped with the winding wheel, and the one end cover of pivot is equipped with driven pulley A, the bottom fixed mounting of frame has driving motor B, and the cover is equipped with driving pulley A on driving motor B's the output shaft, be connected through belt A transmission between driven pulley A and the driving pulley A, both sides still weld respectively in the frame and vertically run through the gag lever post of workstation.
Further, one of them still the welding has the expansion pole on the gag lever post, and the expansion pole is located the winding wheel bottom, frame top corner still rotates to install and is used for moulding spacing wheel D of strip direction.
Further, roller bearing mechanism includes the mounting bracket, fixed mounting has a set of mounting panel, two on the mounting bracket all seted up the arc on the mounting panel and worn the mouth, and two rotate between the mounting panel and install a set of roller, two the one end of changeing the roller is overlapped respectively and is equipped with driven pulley B, mounting bracket bottom fixed mounting has driving motor, and driving motor's output shaft cover is equipped with driving pulley B, two through belt B transmission connection between driven pulley B and the driving pulley B.
Further, shutdown mechanism is including welding in the box at the tail end top of roller bearing mechanism, box central point puts and transversely offers the reservation mouth of wearing that is used for the bellows to walk, and box top fixed mounting has pneumatic cylinder B, pneumatic cylinder B bottom hydraulic pressure rod end extends and welds to the box inner bottom has the arc cutter, and the arc cutter is located and reserves the mouth of wearing, the front side of box is provided with the cut-off control ware of control pneumatic cylinder B work.
Further, the direction frock includes the direction slide rail and a plurality of welding in the bracing piece of direction slide rail bottom, it has the inductor that cuts off that is used for responding to the position still to fixed mounting on the direction slide rail, the output that cuts off the inductor is connected with the input that cuts off the controller.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the plastic corrugated pipe is formed by winding and gluing and splicing the plastic strips extruded by the plastic extruder, and the plastic strips are cooled in an immersion manner by using the cooling water tank before traction and winding, so that the plastic strips are uniformly cooled, the speed is high, the efficiency is high, and therefore, after the plastic corrugated pipe is processed by the plastic strips, the mechanical properties of different parts of the pipe body are the same, and the quality is stable; moreover, the temperature is lower after the plastic strip is processed into the finished product of the plastic corrugated pipe, so that peculiar smell can not be emitted, and the use requirements of people can be well met.
Drawings
Fig. 1 is a structural diagram of a corrugated pipe processing line according to the present invention.
Fig. 2 is a structural view of a cooling water tank of a corrugated pipe processing production line according to the present invention.
Fig. 3 is a structural view of an air drying mechanism of a corrugated pipe processing production line according to the present invention.
Fig. 4 is a side view of a drawing mechanism of a corrugated pipe processing line according to the present invention.
Fig. 5 is a top view of a roller mechanism of a corrugated pipe processing line according to the present invention.
FIG. 6 is a side view of a mounting plate of a bellows processing line of the present invention.
FIG. 7 is a side view of a cutting mechanism of a bellows processing line according to the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a corrugated pipe processing line includes:
the plastic extruder 1 is used for carrying out hot melting on plastic particles fed in the charging barrel 1-3 above the plastic extruder and extruding plastic strips from a discharging nozzle 1-2 at the tail end of the plastic extruder;
a cooling water tank 2 which is arranged at the rear end of the plastic extruder 1 and is used for water cooling of the extruded plastic strip;
the air drying mechanism 3 is fixedly arranged at the top of the tail end of the cooling water tank 2 and is used for draining and air drying the water-cooled plastic strip;
a traction mechanism 5 arranged at the rear end of the cooling water tank 2 and used for drawing the air-dried plastic strips;
the winding mechanism 6 is fixedly arranged on one side of the traction mechanism 5 and is used for winding the drawn plastic strip;
the glue machine 4 is fixedly arranged between the traction mechanism 5 and the winding mechanism 6, and one side of the tail end of the glue machine is provided with a glue spraying nozzle 4-1 which is used for spraying glue to the winding joint of the plastic strip to promote the corrugated pipe to be adhered and formed;
a rolling shaft mechanism 7 arranged at the rear end of the winding mechanism 6 and used for driving the corrugated pipe subjected to adhesion forming to rotate in a single direction and round
Specifically, still include:
the cutting mechanism 8 is fixedly arranged at the top of the tail end of the rolling shaft mechanism 7 and is used for cutting off the formed corrugated pipe;
and a guiding tool 9 which is arranged at the rear end of the cutting mechanism 8 and is used for guiding the formed corrugated pipe.
Specifically, as shown in fig. 1 and 2, a suction machine 1-1 for feeding plastic particles is fixedly arranged at the top of the charging barrel 1-3, and limiting wheels a2-1 for guiding plastic strips are further mounted on two sides in the cooling water tank 2 through rotating shafts.
Specifically, as shown in fig. 3, the air drying mechanism 3 includes a box body 3-1 welded to the top of the tail end of the cooling water tank 2, the air dryer 3-2 is fixedly installed at the top inside the box body 3-1, and limiting wheels B3-3 for guiding plastic strips are rotatably installed on two sides inside the box body 3-1.
Specifically, as shown in fig. 4, the traction mechanism 5 includes a bearing frame 5-4, a plurality of guide wheels C5-3 for guiding the plastic strips are respectively rotatably mounted on the front side and the tail side of the bearing frame 5-4, a traction drive wheel 5-2 is disposed at the bottom of one of the guide wheels C5-3, the traction drive wheel 5-2 is sleeved on an output shaft of a drive motor a5-1, and the drive motor a5-1 is fixedly mounted on the bearing frame 5-4.
Specifically, as shown in fig. 4, the winding mechanism 6 comprises a frame 6-1, a hydraulic cylinder a6-7 is fixedly mounted at the top of the frame 6-1, and the hydraulic rod end at the bottom of the hydraulic cylinder A6-7 is welded with a working frame 6-2, the working frame 6-2 is provided with a rotating shaft through a shaft sleeve, one end of the rotating shaft is sleeved with a winding wheel 6-3, one end of the rotating shaft is sleeved with a driven belt pulley A, the bottom of the frame 6-1 is fixedly provided with a driving motor B6-8, and the output shaft of the driving motor B6-8 is sleeved with a driving belt pulley A, the driven belt pulley A is in transmission connection with the driving belt pulley A through a belt A, limiting rods 6-6 longitudinally penetrating through the working frame 6-2 are respectively welded on two inner sides of the frame 6-1.
Specifically, as shown in fig. 4, an expansion rod 6-5 is further welded on one of the limiting rods 6-6, the expansion rod 6-5 is located at the bottom of the winding wheel 6-3, and a limiting wheel D6-4 for guiding the plastic strips is further rotatably mounted at a corner of the top of the frame 6-1.
Specifically, as shown in fig. 5 and 6, the roller mechanism 7 includes a mounting bracket 7-6, a set of mounting plate 7-1 is fixedly mounted on the mounting bracket 7-6, two arc-shaped through holes 7-2 are formed in the mounting plate 7-1, a set of rotating rollers 7-3 is rotatably mounted between the mounting plate 7-1, one ends of the two rotating rollers 7-3 are respectively sleeved with a driven pulley B, a driving motor 7-5 is fixedly mounted at the bottom of the mounting bracket 7-6, an output shaft of the driving motor 7-5 is sleeved with a driving pulley B, and the two driven pulleys B are in transmission connection with the driving pulley B through a belt B.
Specifically, as shown in fig. 7, the cutting mechanism 8 includes a box body 8-1 welded to the top of the tail end of the roller mechanism 7, a reserved penetration 8-3 for the corrugated pipe to pass through is transversely formed in the center of the box body 8-1, a hydraulic cylinder B8-4 is fixedly mounted on the top of the box body 8-1, a hydraulic rod end at the bottom of the hydraulic cylinder B8-4 extends to the bottom of the box body 8-1 and is welded with an arc-shaped cutter 8-5, the arc-shaped cutter 8-5 is located in the reserved penetration 8-3, and a cutting controller 8-2 for controlling the hydraulic cylinder B8-4 to work is arranged on the front side of the box body 8-1.
Specifically, as shown in fig. 1, the guiding tool 9 includes a guiding slide rail 9-1 and a plurality of supporting rods 9-2 welded to the bottom of the guiding slide rail 9-1, a cutting sensor 9-3 for sensing a position is further fixedly mounted on the guiding slide rail 9-1, and an output end of the cutting sensor 9-3 is connected with an input end of a cutting controller 8-2.
It should be noted that, in the embodiment of the present invention, the cut-off sensor 9-3 may be, but is not limited to: a correlation photoelectric switch.
The corrugated pipe processing production line provided by the embodiment of the invention is characterized in that when in work: the plastic corrugated pipe is characterized in that a suction machine 1-1 at the top of a charging barrel 1-3 sucks plastic particles into the charging barrel 1-3 above a plastic extruder 1, then the plastic extruder 1 heats the plastic particles discharged into the machine body from the charging barrel 1-3, and high-temperature plastic strips are extruded from the tail end of the machine body and pass through a cooling water tank 2 for water cooling, and in the way, the plastic strips are uniformly cooled, the speed is high, the efficiency is high, so that after the plastic corrugated pipe is manufactured by the plastic strips, the mechanical properties of different parts of a pipe body are the same, and the quality is stable; and then, the cooled plastic strip is pulled by a traction mechanism 5 to enter an air drying mechanism 3 for draining and air drying, then enters a winding wheel of a winding mechanism 6 for winding, meanwhile, glue is sprayed out of a glue spraying nozzle 4-1 of a glue machine 4 positioned at a winding wheel 6-3 to promote the corrugated pipe to be adhered and formed, the corrugated pipe after being adhered and formed enters a group of rotating rollers 7-3 on a rolling shaft mechanism 7 for performing equidirectional rounding and forming, then when the corrugated pipe rotates to push forward to a cutting inductor 9-3 on a guiding tool 9, the cutting inductor 9-3 is converted from normally closed to normally open, a switching signal is sent to a cutting controller 8-2, and then a hydraulic cylinder B8-4 is controlled to drive an arc-shaped cutter 8-5 to move downwards so as to cut the corrugated pipe into a specified length, and the subsequent processing is facilitated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A bellows processing lines which characterized in that includes:
the plastic extruder (1) is used for carrying out hot melting on plastic particles discharged from the charging barrel (1-3) above the plastic extruder and extruding plastic strips from a discharge nozzle (1-2) at the tail end of the plastic extruder;
a cooling water tank (2) which is arranged at the rear end of the plastic extruder (1) and is used for water cooling of the extruded plastic strip;
the air drying mechanism (3) is fixedly arranged at the top of the tail end of the cooling water tank (2) and is used for draining and air drying the water-cooled plastic strip;
the traction mechanism (5) is arranged at the rear end of the cooling water tank (2) and is used for drawing the air-dried plastic strips;
the winding mechanism (6) is fixedly arranged on one side of the traction mechanism (5) and is used for winding the drawn plastic strip;
the glue machine (4) is fixedly arranged between the traction mechanism (5) and the winding mechanism (6), and one side of the tail end of the glue machine is provided with a glue spraying nozzle (4-1) for spraying glue on the winding joint of the plastic strip to promote the corrugated pipe to be adhered and formed;
and the rolling shaft mechanism (7) is arranged at the rear end of the winding mechanism (6) and is used for driving the corrugated pipe subjected to adhesion forming to rotate and round in a one-way mode.
2. A bellows processing line according to claim 1, further comprising:
the cutting mechanism (8) is fixedly arranged at the top of the tail end of the rolling shaft mechanism (7) and is used for cutting off the formed corrugated pipe;
and the guiding tool (9) is arranged at the rear end of the cutting mechanism (8) and is used for guiding the formed corrugated pipe.
3. The corrugated pipe processing production line as claimed in claim 1, wherein a suction machine (1-1) for feeding plastic particles is further fixedly arranged at the top of the charging barrel (1-3), and limiting wheels A (2-1) for guiding plastic strips are further mounted on two sides in the cooling water tank (2) through rotating shafts.
4. The corrugated pipe processing production line as claimed in claim 1, wherein the air drying mechanism (3) comprises a box body (3-1) welded at the top of the tail end of the cooling water tank (2), the air dryer (3-2) is fixedly installed at the top in the box body (3-1), and limiting wheels B (3-3) for guiding the plastic strips are rotatably installed at two sides in the box body (3-1).
5. A corrugated pipe processing production line according to claim 1, wherein the traction mechanism (5) comprises a bearing frame (5-4), a plurality of guide wheels C (5-3) for guiding the plastic strips are respectively rotatably mounted on the front side and the tail side of the bearing frame (5-4), a traction driving wheel (5-2) is arranged at the bottom of one of the guide wheels C (5-3), the traction driving wheel (5-2) is sleeved on an output shaft of a driving motor a (5-1), and the driving motor a (5-1) is fixedly mounted on the bearing frame (5-4).
6. The corrugated pipe machining production line as claimed in claim 1, wherein the winding mechanism (6) comprises a frame (6-1), a hydraulic cylinder A (6-7) is fixedly mounted at the top of the frame (6-1), a working frame (6-2) is welded at the hydraulic rod end at the bottom of the hydraulic cylinder A (6-7), a rotating shaft is mounted on the working frame (6-2) through a shaft sleeve, a winding wheel (6-3) is sleeved at one end of the rotating shaft, a driven pulley A is sleeved at one end of the rotating shaft, a driving motor B (6-8) is fixedly mounted at the bottom of the frame (6-1), a driving pulley A is sleeved on an output shaft of the driving motor B (6-8), and the driven pulley A is in transmission connection with the driving pulley A through a belt A, limiting rods (6-6) longitudinally penetrating through the working frame (6-2) are further welded on two inner sides of the frame (6-1) respectively.
7. A corrugated pipe processing production line as claimed in claim 6, wherein an expansion rod (6-5) is further welded on one of the limiting rods (6-6), the expansion rod (6-5) is located at the bottom of the winding wheel (6-3), and a limiting wheel D (6-4) for guiding the plastic strip is further rotatably mounted at the top corner of the frame (6-1).
8. A corrugated pipe manufacturing line according to claim 1, wherein the roller mechanism (7) comprises a mounting frame (7-6), a group of mounting plates (7-1) are fixedly mounted on the mounting rack (7-6), arc-shaped through openings (7-2) are formed in the two mounting plates (7-1), a group of rotating rollers (7-3) are rotatably arranged between the two mounting plates (7-1), one end of each of the two rotating rollers (7-3) is sleeved with a driven belt pulley B, the bottom of each mounting frame (7-6) is fixedly provided with a driving motor (7-5), and the output shaft of the driving motor (7-5) is sleeved with a driving belt pulley B, and the two driven belt pulleys B are in transmission connection with the driving belt pulley B through a belt B.
9. A corrugated pipe manufacturing line according to claim 2, wherein the cutting means (8) comprises a box (8-1) welded to the top of the tail end of the roller means (7), a reserved penetrating opening (8-3) for the corrugated pipe to penetrate is transversely arranged at the center of the box body (8-1), a hydraulic cylinder B (8-4) is fixedly arranged at the top of the box body (8-1), the hydraulic rod at the bottom of the hydraulic cylinder B (8-4) extends towards the bottom in the box body (8-1) and is welded with an arc-shaped cutter (8-5), and the arc-shaped cutter (8-5) is positioned in the reserved penetrating opening (8-3), and the front side of the box body (8-1) is provided with a cut-off controller (8-2) for controlling the hydraulic cylinder B (8-4) to work.
10. The corrugated pipe machining production line according to claim 2, wherein the guide tool (9) comprises a guide slide rail (9-1) and a plurality of support rods (9-2) welded to the bottom of the guide slide rail (9-1), a cut-off sensor (9-3) used for sensing a position is further fixedly mounted on the guide slide rail (9-1), and an output end of the cut-off sensor (9-3) is connected with an input end of a cut-off controller (8-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110514679.6A CN113334813A (en) | 2021-05-11 | 2021-05-11 | Bellows processing lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110514679.6A CN113334813A (en) | 2021-05-11 | 2021-05-11 | Bellows processing lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113334813A true CN113334813A (en) | 2021-09-03 |
Family
ID=77468153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110514679.6A Pending CN113334813A (en) | 2021-05-11 | 2021-05-11 | Bellows processing lines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113334813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670428A (en) * | 2022-03-31 | 2022-06-28 | 广西南宁三正工程材料有限公司 | Moulding production line of bellows roll extrusion |
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|---|---|---|---|---|
| CN103950215A (en) * | 2014-04-03 | 2014-07-30 | 于德胜 | Device and process for producing steel-plastic winding and welding corrugated pipes |
| CN204209945U (en) * | 2014-10-21 | 2015-03-18 | 东莞市华希塑料机械有限公司 | A kind of medical tube extruding production line |
| CN107825731A (en) * | 2017-10-13 | 2018-03-23 | 佛山市三水世通管材有限公司 | A kind of PP skeletons enhancing PE helical bellowses production technology and its production line |
| CN210308927U (en) * | 2019-08-20 | 2020-04-14 | 湖北吉祥塑胶有限公司 | Plastics cooling production line |
| CN212021604U (en) * | 2020-04-21 | 2020-11-27 | 青岛亚信塑料挤出设备有限公司 | PP skeleton reinforcing PE helical bellows production line |
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2021
- 2021-05-11 CN CN202110514679.6A patent/CN113334813A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950215A (en) * | 2014-04-03 | 2014-07-30 | 于德胜 | Device and process for producing steel-plastic winding and welding corrugated pipes |
| CN204209945U (en) * | 2014-10-21 | 2015-03-18 | 东莞市华希塑料机械有限公司 | A kind of medical tube extruding production line |
| CN107825731A (en) * | 2017-10-13 | 2018-03-23 | 佛山市三水世通管材有限公司 | A kind of PP skeletons enhancing PE helical bellowses production technology and its production line |
| CN210308927U (en) * | 2019-08-20 | 2020-04-14 | 湖北吉祥塑胶有限公司 | Plastics cooling production line |
| CN212021604U (en) * | 2020-04-21 | 2020-11-27 | 青岛亚信塑料挤出设备有限公司 | PP skeleton reinforcing PE helical bellows production line |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670428A (en) * | 2022-03-31 | 2022-06-28 | 广西南宁三正工程材料有限公司 | Moulding production line of bellows roll extrusion |
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Application publication date: 20210903 |
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