CN112622226A - Plastic pipe inner support traction tool and traction method thereof - Google Patents
Plastic pipe inner support traction tool and traction method thereof Download PDFInfo
- Publication number
- CN112622226A CN112622226A CN202011627516.0A CN202011627516A CN112622226A CN 112622226 A CN112622226 A CN 112622226A CN 202011627516 A CN202011627516 A CN 202011627516A CN 112622226 A CN112622226 A CN 112622226A
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- connecting rod
- pipe
- traction
- support
- sliding disc
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000001125 extrusion Methods 0.000 claims abstract description 17
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000004513 sizing Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 abstract 2
- 238000000429 assembly Methods 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/355—Conveyors for extruded articles
Abstract
An internal support traction tool for a plastic pipe and a traction method thereof belong to the technical field of plastic pipe extrusion. The extrusion die comprises a first rotating shaft and a second rotating shaft, wherein the first rotating shaft is connected with the second rotating shaft through a coupling sleeve, a first telescopic mechanism is installed on the first rotating shaft, a second telescopic mechanism is installed on the second rotating shaft, the first telescopic mechanism comprises a first sliding disc and a second sliding disc, a plurality of groups of connecting rod assemblies are arranged between the first sliding disc and the second sliding disc, a supporting roller is installed on each group of connecting rod assemblies, the second telescopic mechanism is identical to the first telescopic mechanism in structure, and the first telescopic mechanism is connected with a core die of the extrusion die head on the extruder. According to the invention, through the arrangement of the first telescopic mechanism and the second telescopic mechanism, the support in the pipe consisting of the plurality of supporting rollers corresponds to the traction belt, and the wall surface of the pipe is clamped, so that the wall surface of the pipe can be clamped, the deformation of the pipe can be prevented, and the crease and the unevenness of the inner wall surface and the outer wall surface of the pipe can be avoided.
Description
Technical Field
The invention belongs to the technical field of plastic pipe extrusion, and particularly relates to a plastic pipe inner support traction tool and a traction method thereof.
Background
The conventional plastic pipe extrusion process usually comprises pipe blank extrusion, vacuum sizing, cooling, traction, cutting and the like, a traction pipe is required to be connected with the extruded pipe blank when the machine is started, and the traction pipe and the pipe blank are driven by a tractor to be continuously produced backwards.
At present, a plurality of pairs of tracks/belts are commonly adopted by a tractor to press the outer wall surface of a pipe to provide power through friction, the traction belt circularly operates to realize the traction of the pipe, the method can meet the production requirement under common conditions, but the pipe is easy to flatten and generate slippage on certain working conditions such as plastic pipes with poor rigidity or small wall thickness, and the normal production cannot be realized.
In order to solve the problems, the invention with the patent number of CN208199535U, the patent name of which is a tractor crawler and a tractor, and the patent number of CN207139815U, the patent name of which is a thin-wall pipe anti-deformation traction structure, aims to improve the tractor, increase the friction force and the friction area as much as possible, reduce the total positive pressure required by traction and improve the distribution uniformity of the positive pressure. The patent number is CN204773483U, the patent name is an inner core supporting and traction structure for PFA large-caliber thin-walled tube extrusion molding, a cylindrical inner core support is added in the tube, but the outer diameter of the inner core is not adjustable, so that the tube is not easy to be sleeved in the inner core support, the tube is not easy to be attached and pulled with the periphery of the inner wall of the tube, the tube is in sliding friction with the tube, and the tube is easy to generate axial crease deformation when the resistance is large. Other patents for supporting a fan thin-wall part in a wind tunnel are disclosed in patent application No. CN110220667A, the patent name is a supporting device and method for the fan thin-wall part for the wind tunnel, the patent number is CN 109277841B, and the patent name is a patent for supporting a tool in a thin-wall pipe, most of the patents are used for correcting pipe circular deformation or keeping a pipe not to deform during processing and welding, and the supporting device and the supporting method are not suitable for online traction and continuous extrusion of the pipe. Therefore, a traction method and a traction tool which are suitable for the production process and are used for clamping the wall surface of the pipe correspondingly by the support and the traction belt in the pipe and preventing the deformation of the pipe are needed.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a traction tool and a traction method thereof, which are suitable for plastic pipe extrusion startup and online continuous production, can clamp the wall surface of a pipe, can prevent the pipe from deforming, and can avoid the pipe from generating creases and uneven inner and outer wall surfaces.
The invention provides the following technical scheme: the utility model provides a support in plastic tubing and pull frock which characterized in that: including first pivot and second pivot, be connected through the shaft coupling sleeve between first pivot and the second pivot, install first telescopic machanism in the first pivot, install second telescopic machanism in the second pivot, first telescopic machanism includes first smooth dish and the smooth dish of second, is equipped with a plurality of groups link assembly between the smooth dish of first smooth dish and second, all installs the backing roll on every group link assembly, second telescopic machanism is the same with first telescopic machanism structure, the mandrel of extrusion die head is connected on first telescopic machanism and the extruder, installs handheld operating parts on the second telescopic machanism.
The plastic pipe inner support traction tool is characterized in that a first sliding disc, a second sliding disc and a first rotating shaft in a first telescopic mechanism are connected in a screwing mode through trapezoidal threads, and the screwing directions of the threads on the first sliding disc and the second sliding disc are opposite.
The plastic pipe inner support traction tool is characterized in that a first sliding disc, a second sliding disc and a second rotating shaft in a second telescopic mechanism are connected in a screwing mode through trapezoidal threads.
The plastic pipe inner support traction tool is characterized in that connecting rod mounting positions which are distributed annularly are correspondingly arranged on the first sliding disc and the second sliding disc.
The plastic pipe inner support traction tool is characterized in that the connecting rod assembly comprises a first connecting rod and a second connecting rod, the inner end of the first connecting rod is installed on a connecting rod installation position on the first sliding disc, the inner end of the second connecting rod is installed on a connecting rod installation position corresponding to the second sliding disc, and the outer ends of the first connecting rod and the second connecting rod are of Y-shaped structures.
The plastic pipe inner support traction tool is characterized in that a connecting shaft is arranged in the middle of a first connecting rod in a penetrating mode, the outer end of a second connecting rod is connected with the first connecting rod through the connecting shaft, and a supporting roller is erected and installed between two branched sections of a Y-shaped structure at the front end of the first connecting rod.
The plastic pipe inner support traction tool is characterized in that the end parts of the outer ends of the first connecting rod and the second connecting rod are connected through a connecting shaft, and the supporting roller is sleeved on the connecting shaft.
The plastic pipe inner support traction tool is characterized in that a rolling bearing is installed between the supporting roll and the connecting shaft, the supporting roll is of a spherical structure or a roller mounting structure, and the outer side surface of the supporting roll is processed by hard coating.
The plastic pipe inner support traction tool is characterized in that the outer end of a first sliding disc in a first telescopic mechanism is connected with a core mold of an extrusion die head on an extruder through a rope, a handle for holding is installed at the outer end of a second sliding disc in a second telescopic mechanism, and a rotary wrench is installed at the outer end of a second rotating shaft.
A traction method of a support traction tool in a plastic pipe is characterized by comprising the following steps:
step 1: firstly, adjusting a telescopic mechanism, and reducing the support diameter of an in-pipe support consisting of a group of support rollers so as to facilitate the traction pipe to pass through a cutting machine, a traction machine, the in-pipe support, a cooling box and a sizing sleeve from back to front to reach the vicinity of an extrusion die head;
step 2: starting a machine to extrude the tube blank, connecting the tube blank with a traction tube, and driving the traction tube and the tube blank to reach a tractor from front to back by the tractor;
and step 3: cutting off the pipe when the pipe blank joint comes out of the tractor and does not enter the cutting machine, adjusting the support diameter of the inner support of the pipe outside the tractor through a rotary wrench, enabling the support roller to be attached to the inner wall of the pipe, and enabling the support roller to be aligned with a traction belt through a handle;
and 4, step 4: and (3) adjusting process parameters to gradually reduce the wall thickness of the tube blank, and then repeating the operations from the step 1 to the step 3 repeatedly to reduce the wall thickness of the tube blank and simultaneously support the tube blank.
By adopting the technology, compared with the prior art, the invention has the following beneficial effects:
according to the invention, through the arrangement of the first telescopic mechanism and the second telescopic mechanism, the relative position between the first sliding disc and the second sliding disc is conveniently and quickly adjusted by utilizing the threaded connection structures of the first sliding disc and the second sliding disc in the telescopic mechanisms and the corresponding rotating shafts, so that the relative position between the first connecting rod and the second connecting rod in the connecting rod assembly arranged between the first sliding disc and the second sliding disc is adjusted, and further the position of the supporting roller is adjusted, so that the support in the pipe consisting of a plurality of supporting rollers corresponds to the traction belt, the wall surface of the pipe is clamped, the deformation of the pipe is prevented, and the pipe is pulled by higher positive pressure; the diameter of the support in the pipe is adjustable and keeps fitting with the inner wall of the pipe, and rolling friction is formed between the support in the pipe and the inner wall of the pipe, so that the pipe is prevented from being folded and the inner and outer wall surfaces are prevented from being uneven.
Drawings
FIG. 1 is a schematic structural view of a connecting rod assembly according to the present invention in a first connection mode;
FIG. 2 is a schematic overall side view of a connecting rod assembly of the present invention utilizing a first connection;
FIG. 3 is an enlarged view of the structure at C in FIG. 1;
FIG. 4 is a schematic structural view of a telescoping mechanism of the connecting rod assembly of the present invention using a second connection mode;
fig. 5 is a schematic structural view of a first slide plate in the present invention.
In the figure: 1. a first rotating shaft; 2. a lifting eye screw; 3. a first slide plate; 4. a first link; 5. a support roller; 6. a second link; 7. a second slide plate; 8. a coupling sleeve; 9. a pin shaft; 10. a second rotating shaft; 11. a connecting shaft; 12. a handle; 13. rotating the wrench; A. a first telescoping mechanism; B. and a second telescoping mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.
Referring to fig. 1-5, a plastic tube inner support traction tool comprises a first rotating shaft 1 and a second rotating shaft 10, wherein the first rotating shaft 1 is connected with the second rotating shaft 10 through a coupling sleeve 8, the coupling sleeve 8 can transmit torque and tensile and compressive stress, one end of the first rotating shaft 1 and one end of the second rotating shaft 10 are respectively inserted into the coupling sleeve 8, corresponding mounting holes are formed in the first rotating shaft 1, the second rotating shaft 10 and the coupling sleeve 8, a pin shaft 9 penetrates through the mounting holes to connect the first rotating shaft 1 and the second rotating shaft 10 into a whole, and a cotter pin is arranged at the other end of the pin shaft 9 to prevent the pin shaft 9 from falling off. One end of the first rotating shaft 1 is provided with trapezoidal threads, the other end of the first rotating shaft is matched with the coupling sleeve 8, one end of the second rotating shaft 10 is matched with the coupling sleeve 8, and the other end of the second rotating shaft is provided with an outer hexagonal structure.
Install first telescopic machanism A in the first pivot 1, install second telescopic machanism B in the second pivot 10, first telescopic machanism A includes first sliding tray 3 and second sliding tray 7, correspond on first sliding tray 3 and the second sliding tray 7 and be equipped with the connecting rod installation position that the hoop distributes, be equipped with a plurality of groups link assembly between first sliding tray 3 and the second sliding tray 7, all install backing roll 5 on every group link assembly, second telescopic machanism B is the same with first telescopic machanism A structure, the array setting.
The first sliding disc 3, the second sliding disc 7 and the first rotating shaft 1 in the first telescopic mechanism A are connected in a screwing mode through trapezoidal threads, and the screwing directions of the threads on the first sliding disc 3 and the second sliding disc 7 are opposite. The first sliding disc 3, the second sliding disc 7 and the second rotating shaft 10 in the second telescopic mechanism B are connected in a screwing mode through trapezoidal threads.
The connecting rod assembly comprises a first connecting rod 4 and a second connecting rod 6, the inner end of the first connecting rod 4 is installed on a connecting rod installation position on the first sliding disc 3, the inner end of the second connecting rod 6 is installed on a connecting rod installation position corresponding to the second sliding disc 7, and the outer ends of the first connecting rod 4 and the second connecting rod 6 are Y-shaped structures.
The connection mode between the first connecting rod 4 and the second connecting rod 6 in the connecting rod assembly can adopt two structures:
the first structure is as follows: the middle part of the first connecting rod 4 is provided with a connecting shaft 11 in a penetrating way, and the outer end of the second connecting rod 6 is connected with the first connecting rod 4 through the connecting shaft 11. The supporting roller 5 is mounted between two branch sections of the Y-shaped structure at the front end of the first connecting rod 4 in an erecting mode.
The second structure is as follows: the outer end parts of the first connecting rod 4 and the second connecting rod 6 are connected through a connecting shaft 11. The supporting roller 5 is sleeved on the connecting shaft 11.
In the two structures, rolling bearings are arranged between the supporting roller 5 and the connecting shaft 11, the supporting roller 5 can be of a spherical structure or a roller structure, and the outer side surface of the supporting roller is plated with hard particles.
The outer end of a first sliding disc 3 in a first telescopic mechanism A is connected with a core mould of an extrusion die head on an extruder through a lifting bolt 2 and a rope, the outer end of a second sliding disc 7 in a second telescopic mechanism B is provided with a handheld operating part handle 12, and the handle 12 is welded on the second sliding disc 7 and used for manually adjusting the circumferential angle of the whole inner support so as to enable a support roller 5 to be aligned with a traction belt of a tractor, thereby realizing the clamping and traction of the wall surface of a pipe.
The traction method of the tool comprises the following steps:
step 1: firstly, adjusting a first telescopic mechanism A and a second telescopic mechanism B, and reducing the support diameter of an in-pipe support consisting of a group of support rollers 5 so as to facilitate the traction of a pipe to pass through a cutting machine, a traction machine, the in-pipe support, a cooling box and a sizing sleeve from back to front to reach the vicinity of an extrusion die head;
step 2: starting a machine to extrude the tube blank, connecting the tube blank with a traction tube, driving the traction tube and the tube blank to reach a tractor from front to back by the tractor, wherein the wall thickness of the tube blank is thicker to prevent the tube blank from being flattened by the tractor;
and step 3: cutting off the pipe when the pipe blank joint comes out of the tractor and does not enter the cutting machine, adjusting the support diameter of the inner support of the pipe outside the tractor through a rotary wrench 13, enabling the support roller 5 to be attached to the inner wall of the pipe, and enabling the support roller 5 to be aligned with a traction belt through a handle 12;
and 4, step 4: and (3) adjusting process parameters to gradually reduce the wall thickness of the tube blank, and then repeating the operations from the step 1 to the step 3 repeatedly to reduce the wall thickness of the tube blank and simultaneously support the tube blank, so that the plastic tube with thin wall or poor rigidity can be produced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a support in plastic tubing and pull frock which characterized in that: including first pivot (1) and second pivot (10), be connected through coupling sleeve (8) between first pivot (1) and the second pivot (10), install first telescopic machanism (A) on first pivot (1), install second telescopic machanism (B) on second pivot (10), first telescopic machanism (A) includes first sliding tray (3) and second sliding tray (7), is equipped with a plurality of groups link assembly between first sliding tray (3) and second sliding tray (7), all installs backing roll (5) on every group, second telescopic machanism (B) is the same with first telescopic machanism (A) structure, the core mould of extrusion die head is connected on first telescopic machanism (A) and the extruder, installs handheld operating parts on second telescopic machanism (B).
2. The plastic tube inner support traction tool according to claim 1, wherein a first sliding disc (3) and a second sliding disc (7) in the first telescoping mechanism (a) are connected with the first rotating shaft (1) through trapezoidal threads in a screwing mode, and the threads on the first sliding disc (3) and the second sliding disc (7) are opposite in screwing direction.
3. The plastic tube inner support traction tool according to claim 2, wherein the first sliding plate (3), the second sliding plate (7) and the second rotating shaft (10) in the second telescoping mechanism (B) are connected in a screwing manner through trapezoidal threads.
4. The plastic tube inner support traction tool according to claim 3, wherein the first sliding plate (3) and the second sliding plate (7) are correspondingly provided with connecting rod mounting positions distributed annularly.
5. The plastic pipe inner support traction tool according to claim 4, wherein the connecting rod assembly comprises a first connecting rod (4) and a second connecting rod (6), the inner end of the first connecting rod (4) is installed on a connecting rod installation position on the first sliding disc (3), the inner end of the second connecting rod (6) is installed on a connecting rod installation position corresponding to the second sliding disc (7), and the outer ends of the first connecting rod (4) and the second connecting rod (6) are both Y-shaped structures.
6. The plastic pipe inner support traction tool according to claim 5, wherein a connecting shaft (11) is arranged in the middle of the first connecting rod (4) in a penetrating mode, the outer end of the second connecting rod (6) is connected with the first connecting rod (4) through the connecting shaft (11), and the supporting roller (5) is arranged between two branch sections of a Y-shaped structure at the front end of the first connecting rod (4) in an erecting mode.
7. The plastic pipe inner support traction tool according to claim 5, wherein the outer end portions of the first connecting rod (4) and the second connecting rod (6) are connected through a connecting shaft (11), and the supporting roller (5) is sleeved on the connecting shaft (11).
8. The plastic pipe inner support traction tool according to claim 6 or 7, wherein a rolling bearing is installed between the support roller (5) and the connecting shaft (11), the support roller (5) is in one of a spherical structure and a roller-mounted structure, and the outer side surface of the support roller is treated by hard coating.
9. The plastic pipe inner support traction tool according to claim 1, wherein an outer end of a first sliding disc (3) in the first telescopic mechanism (A) is connected with a core mould of an extrusion die head on an extruder through a rope, an outer end of a second sliding disc (7) in the second telescopic mechanism (B) is provided with a handle (12) for holding, and an outer end of a second rotating shaft (10) is provided with a rotary wrench (13).
10. A traction method of a support traction tool in a plastic pipe is characterized by comprising the following steps:
step 1: firstly, adjusting a telescopic mechanism, and reducing the support diameter of an in-pipe support consisting of a group of support rollers (5) so as to facilitate the traction of the pipe to pass through a cutting machine, a traction machine, the in-pipe support, a cooling box and a sizing sleeve from back to front to reach the vicinity of an extrusion die head;
step 2: starting a machine to extrude the tube blank, connecting the tube blank with a traction tube, and driving the traction tube and the tube blank to reach a tractor from front to back by the tractor;
and step 3: when the pipe blank joint comes out of the tractor and does not enter the cutting machine, the pipe is cut off, then the supporting diameter of the inner support of the pipe is adjusted outside the tractor through a rotary wrench (13), so that the supporting roller (5) is attached to the inner wall of the pipe, and the supporting roller (5) is aligned to a traction belt through a handle (12);
and 4, step 4: and (3) adjusting process parameters to gradually reduce the wall thickness of the tube blank, and then repeating the operations from the step 1 to the step 3 repeatedly to reduce the wall thickness of the tube blank and simultaneously support the tube blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011627516.0A CN112622226A (en) | 2020-12-30 | 2020-12-30 | Plastic pipe inner support traction tool and traction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011627516.0A CN112622226A (en) | 2020-12-30 | 2020-12-30 | Plastic pipe inner support traction tool and traction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112622226A true CN112622226A (en) | 2021-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011627516.0A Pending CN112622226A (en) | 2020-12-30 | 2020-12-30 | Plastic pipe inner support traction tool and traction method thereof |
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| Country | Link |
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| CN (1) | CN112622226A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319614A (en) * | 2021-06-18 | 2021-08-31 | 陈宏� | Automobile parts processing frock clamp |
| CN114362056A (en) * | 2021-12-16 | 2022-04-15 | 临海伟星新型建材有限公司 | Plastic pipeline online cable laying device and technology |
| CN117532849A (en) * | 2024-01-09 | 2024-02-09 | 江苏奥瑞斯机械制造有限公司 | Traction equipment applied to plastic extruder |
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| CN208407945U (en) * | 2018-05-09 | 2019-01-22 | 青岛友邦保温有限公司 | The inside rust removing device for steel tube of insulating tube processing |
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| CN103538238A (en) * | 2012-07-16 | 2014-01-29 | 宁波康润机械科技有限公司 | Pipe pre-traction connection device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319614A (en) * | 2021-06-18 | 2021-08-31 | 陈宏� | Automobile parts processing frock clamp |
| CN114362056A (en) * | 2021-12-16 | 2022-04-15 | 临海伟星新型建材有限公司 | Plastic pipeline online cable laying device and technology |
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| CN117532849A (en) * | 2024-01-09 | 2024-02-09 | 江苏奥瑞斯机械制造有限公司 | Traction equipment applied to plastic extruder |
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Application publication date: 20210409 |
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