CN111791420A - Isobaric forming preparation method of polytetrafluoroethylene pipeline and pipe fitting lining - Google Patents
Isobaric forming preparation method of polytetrafluoroethylene pipeline and pipe fitting lining Download PDFInfo
- Publication number
- CN111791420A CN111791420A CN202010775863.1A CN202010775863A CN111791420A CN 111791420 A CN111791420 A CN 111791420A CN 202010775863 A CN202010775863 A CN 202010775863A CN 111791420 A CN111791420 A CN 111791420A
- Authority
- CN
- China
- Prior art keywords
- wall
- pipe
- fixing block
- fixedly connected
- connecting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- -1 polytetrafluoroethylene Polymers 0.000 title claims abstract description 18
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 18
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 33
- 230000000903 blocking effect Effects 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 23
- 238000000462 isostatic pressing Methods 0.000 claims description 14
- 238000005056 compaction Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000007689 inspection Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009694 cold isostatic pressing Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
- B29C43/102—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using rigid mould parts specially adapted for moulding articles having an axis of symmetry
- B29C43/104—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using rigid mould parts specially adapted for moulding articles having an axis of symmetry the mould cavity lying totally outside the axis of symmetry, e.g. toroidal moulds
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
- B29C43/183—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles the preformed layer being a lining, e.g. shaped in the mould before compression moulding, or a preformed shell adapted to the shape of the mould
- B29C43/184—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles the preformed layer being a lining, e.g. shaped in the mould before compression moulding, or a preformed shell adapted to the shape of the mould shaped by the compression of the material during moulding
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
- B29C2043/106—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using powder material
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
- B29C2043/3405—Feeding the material to the mould or the compression means using carrying means
- B29C2043/3427—Feeding the material to the mould or the compression means using carrying means hopper, vessel, chute, tube, conveying screw, for material in discrete form, e.g. particles or powder or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The invention discloses an isobaric molding preparation method of a polytetrafluoroethylene pipeline and pipe fitting lining, which comprises a machine body, a charging device and a mold device, wherein the charging device comprises a material box, a connecting pipe, a material discharging pipe, a material blocking plug, a first connecting rod, a sliding block, a connecting block, a sliding groove and a second connecting rod; step two, cleaning the die; step three, equal pressure forming; and step four, demolding and inspecting, wherein the feeding device designed by the invention can automatically fill powder into the forming die, so that the working efficiency is improved, an operator can be prevented from contacting a large amount of powder, and the damage to the body is reduced.
Description
Technical Field
The invention relates to the technical field of isostatic compaction, in particular to an isostatic compaction preparation method for polytetrafluoroethylene pipeline and pipe fitting linings.
Background
The isostatic pressing technology is a technology for forming powder by utilizing the principle that a product in a closed high-pressure container is equal in all directions, the isostatic pressing technology is divided into three different types of cold isostatic pressing, warm isostatic pressing and hot isostatic pressing according to the temperature during forming and consolidation, the polytetrafluoroethylene pipeline and pipe lining prepared by the isostatic pressing method can effectively avoid the damage of the workpiece, the existing isostatic pressing forming die uses manual powder filling, the filling speed is low, and the physical health of personnel is very easily damaged; the existing equal-pressure forming die has a complex structure and is inconvenient to use; the existing pipe lining preparation method has multiple working procedures and consumes a long time.
Disclosure of Invention
The invention aims to provide an isobaric forming preparation method of polytetrafluoroethylene pipelines and pipe fittings, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: a polytetrafluoroethylene pipeline and pipe fitting lining isobaric shaping preparation method comprises a machine body, a charging device and a mould device, wherein the charging device is arranged on one side inner wall of the machine body and comprises a material box, a connecting pipe, a discharging pipe, a material blocking plug, a first connecting rod, a first air cylinder, a first fixing block, a second air cylinder, a sliding block, a connecting block, a sliding chute and a second connecting rod, the material box is fixedly connected on the top inner wall of the machine body, the connecting pipe is fixedly connected on the outer wall of the bottom end of the material box, the discharging pipe is fixedly connected on the inner wall of one side of the connecting pipe, the material blocking plug is sleeved on the inner wall of one side of the material box, the first connecting rod is fixedly connected on the outer wall of the top end of the material blocking plug, the first air cylinder is fixedly connected on the outer wall of the top end of the machine body, the first connecting rod is fixedly connected on the outer wall of, fixedly connected with second cylinder on the top outer wall of first fixed block, fixedly connected with slider on the outer wall of one side of second cylinder output, fixedly connected with second connecting rod on the top outer wall of slider, the symmetry is fixed with the connecting block on the top inner wall of fuselage, the spout has been seted up on one side outer wall of connecting block, and slider sliding connection is on one side inner wall of spout, be provided with die set on one side inner wall of fuselage.
The die device comprises a second fixing block, a first through hole, a pipeline outer die, a rubber sleeve, a connecting ring, a supporting tube, a third fixing block, a third connecting rod, a second through hole, a third through hole and a fourth fixing block, wherein the second fixing block is arranged on the inner wall of one side of the machine body, the first through hole is symmetrically formed in the outer wall of one side of the second fixing block, the second connecting rod is sleeved on the inner wall of one side of the first through hole, the connecting ring is sleeved on the inner wall of the bottom end of the second fixing block, the supporting tube is fixedly connected to the outer wall of the bottom end of the connecting ring, the third fixing block is fixedly connected to the outer wall of the bottom end of the supporting tube, a third connecting rod is fixedly connected to the outer wall of the top end of the third fixing block, and.
A method for preparing a pipe fitting lining of a polytetrafluoroethylene pipeline by isostatic pressing comprises the steps of firstly, charging a mold; step two, cleaning the die; step three, equal pressure forming; and step four, demolding and checking.
In the first step, the mold charging comprises the following steps:
1) and detaching the screw on the third connecting rod, and taking down the second fixed block.
2) And (5) installing the outer pipe mold to be lined into the installation groove on the third fixed block.
3) And re-fixing the second fixed block to the third connecting rod.
4) The mold apparatus is installed into the charging device.
5) And starting the charging device to perform automatic charging.
6) And closing the charging device, taking down the die device, and fixing the fourth fixed block onto the second fixed block through bolts.
In the second step, the mold cleaning is to clean the filled mold device with water.
In the third step, the isostatic pressing comprises the following steps:
1) and putting the cleaned die device into a high-pressure bin.
2) And (3) filling water into the high-pressure bin, pressurizing the high-pressure bin, and maintaining the pressure for a period of time.
3) And opening the high-pressure bin and taking out the die device.
In the fourth step, the mold removal inspection comprises the following steps:
1) and detaching the screw on the third connecting rod, and taking down the second fixed block.
2) And taking out the outer pipe mold, and checking whether the lining inside the outer pipe mold meets the standard.
According to the technical scheme, the outer wall of one side of the supporting tube is sleeved with the rubber sleeve, one end of the rubber sleeve is fixedly connected to the outer wall of the bottom end of the connecting ring, the other end of the rubber sleeve is fixedly connected to the outer wall of the top end of the third fixing block, and the outer wall of one side of the rubber sleeve is sleeved with the outer pipe mold.
According to the technical scheme, a fourth fixing block is fixed on the outer wall of the top end of the second fixing block through bolts.
According to the technical scheme, the outer wall of one side of the second fixing block is symmetrically provided with third through holes, and the outer wall of one side of the third fixing block is symmetrically provided with second through holes.
According to the technical scheme, the outer wall of one side of the supporting tube is provided with water inlet holes in a distributed mode.
According to the technical scheme, the type of the connecting pipe is a corrugated pipe.
According to the technical scheme, in the step three 2), the pressurizing pressure is 40MPa, and the pressure maintaining time is 10 min.
Compared with the prior art, the invention has the following beneficial effects: the feeding device designed by the invention can automatically feed powder into the forming die, not only improves the working efficiency, but also can avoid operators from contacting a large amount of powder and reduce the damage to bodies.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a front view cut-away structural schematic diagram of the present invention.
Fig. 2 is an enlarged view of the structure of the region a in fig. 1.
FIG. 3 is a front sectional view of the die apparatus of the present invention.
Fig. 4 is a schematic perspective view of the mold apparatus of the present invention.
Fig. 5 is a schematic perspective view of the charging device of the present invention.
Fig. 6 is a flow chart of a method of the present invention.
In the figure: 1. a body; 2. a charging device; 3. a mold device; 21. a material box; 22. a connecting pipe; 23. a discharge pipe; 24. plugging the material; 25. a first link; 26. a first cylinder; 27. a first fixed block; 28. a second cylinder; 29. a slider; 210. connecting blocks; 211. a chute; 212. a second link; 31. a second fixed block; 32. a first through hole; 33. a pipeline outer mold; 34. a rubber sleeve; 35. a connecting ring; 36. supporting a tube; 37. a third fixed block; 38. a third link; 39. a second through hole; 310. a third through hole; 311. and a fourth fixed block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1-5, the present invention provides a technical solution: an isobaric molding preparation method of a polytetrafluoroethylene pipeline and pipe fitting lining comprises a machine body 1, a charging device 2 and a mold device 3, wherein the charging device 2 is arranged on the inner wall of one side of the machine body 1, the charging device 2 comprises a material box 21, a connecting pipe 22, a discharging pipe 23, a material blocking plug 24, a first connecting rod 25, a first air cylinder 26, a first fixed block 27, a second air cylinder 28, a sliding block 29, a connecting block 210, a sliding groove 211 and a second connecting rod 212, the material box 21 is fixedly connected onto the inner wall of the top end of the machine body 1, the connecting pipe 22 is fixedly connected onto the outer wall of the bottom end of the material box 21, the discharging pipe 23 is fixedly connected onto the inner wall of one side of the connecting pipe 22, the material blocking plug 24 is sleeved onto the inner wall of one side of the material box 21, the first connecting rod 25 is fixedly connected onto the outer wall of the top end of the material blocking plug 24, the first air cylinder 26, first fixed block 27 is fixed with to the symmetry on the both sides inner wall of fuselage 1, fixedly connected with second cylinder 28 on the top outer wall of first fixed block 27, fixedly connected with slider 29 on the outer wall of one side of second cylinder 28 output, fixedly connected with second connecting rod 212 on the top outer wall of slider 29, the symmetry is fixed with connecting block 210 on the top inner wall of fuselage 1, spout 211 has been seted up on one side outer wall of connecting block 210, and slider 29 sliding connection is on one side inner wall of spout 211, be provided with mold device 3 on one side inner wall of fuselage 1.
The die device 3 comprises a second fixing block 31, a first through hole 32, a pipeline outer die 33, a rubber sleeve 34, a connecting ring 35, a supporting tube 36, a third fixing block 37, a third connecting rod 38, a second through hole 39, a third through hole 310 and a fourth fixing block 311, the second fixing block 31 is arranged on the inner wall of one side of the machine body 1, the first through hole 32 is symmetrically formed in the outer wall of one side of the second fixing block 31, the second connecting rod 212 is sleeved on the inner wall of one side of the first through hole 32, the connecting ring 35 is sleeved on the inner wall of the bottom end of the second fixing block 31, the supporting tube 36 is fixedly connected to the outer wall of the bottom end of the connecting ring 35, the third fixing block 37 is fixedly connected to the outer wall of the bottom end of the supporting tube 36, the third connecting rod 38 is fixedly connected to the outer wall of the top end of the third fixing; a rubber sleeve 34 is sleeved on the outer wall of one side of the supporting tube 36, one end of the rubber sleeve 34 is fixedly connected to the outer wall of the bottom end of the connecting ring 35, the other end of the rubber sleeve 34 is fixedly connected to the outer wall of the top end of the third fixing block 37, a pipeline outer die 33 is sleeved on the outer wall of one side of the rubber sleeve 34, and the rubber sleeve 34 is used for extruding powder to form the powder; a fourth fixing block 311 is fixed on the outer wall of the top end of the second fixing block 31 by bolts and used for blocking powder; third through holes 310 are symmetrically formed in the outer wall of one side of the second fixing block 31, and second through holes 39 are symmetrically formed in the outer wall of one side of the third fixing block 37 and used for the circulation of pressurized water flow; water inlet holes are distributed on the outer wall of one side of the supporting pipe 36 and used for water flow to enter the supporting pipe 36 and pressurize the rubber sleeve 34; the connecting tube 22 is of the corrugated tube type, facilitating the mounting and dismounting of the mould device 3 on the charging device 2.
Referring to fig. 6, the present invention provides a technical solution: a method for preparing a pipe fitting lining of a polytetrafluoroethylene pipeline by isostatic pressing comprises the steps of firstly, charging a mold; step two, cleaning the die; step three, equal pressure forming; and step four, demolding and checking.
In the first step, the mold charging comprises the following steps:
1) and removing the screw on the third connecting rod 38 and removing the second fixing block 31.
2) The pipe outer mold 33 to be lined is fitted into the mounting groove of the third fixing block 37.
3) The second fixed block 31 is re-fixed to the third link 38.
4) The mold device 3 is installed into the charging device 2.
5) The charging device 2 is started to perform automatic charging.
6) The charging device 2 is closed, the mold device 3 is removed, and the fourth fixing block 311 is bolted to the second fixing block 31.
In the second step, the mold cleaning is to clean the filled mold device 3 with water.
In the third step, the isostatic pressing comprises the following steps:
1) the cleaned mold device 3 is placed in a high-pressure bin.
2) And (3) filling water into the high-pressure bin, and pressurizing the high-pressure bin, wherein the pressurizing pressure is 40MPa, and the pressure maintaining time is 10 min.
3) The high pressure silo is opened and the mold apparatus 3 is removed.
In the fourth step, the mold removal inspection comprises the following steps:
1) and removing the screw on the third connecting rod 38 and removing the second fixing block 31.
2) The pipe outer mold 33 is removed and the lining inside is checked for compliance with the standard.
Based on the above, the present invention has the advantages that when the present invention is used, the external pipe mold 33 is firstly installed on the charging device 2, after the charging device 2 is started and charging is completed, the mold device 3 is unloaded, the clean mold device 3 is subjected to isostatic pressing treatment, and finally, the mold is removed to obtain a finished product, and the specific operations are as follows: the fourth fixing block 311 on the die device 3 is dismounted, the first through hole 32 on the second fixing block 31 is sleeved on the second connecting rod 212, the discharge pipe 23 is inserted into a cavity between the outer die 33 of the pipeline and the rubber sleeve 34, the second air cylinder 28 on the first fixing block 27 is intermittently started, the slide block 29 is enabled to rapidly reciprocate in the chute 211 on the connecting block 210, the second fixing block 31 is vibrated and retracted into the first air cylinder 26, the material blocking plug 24 is driven by the first connecting rod 25, powder is filled into the material charging cavity through the material box 21, the connecting pipe 22 and the discharge pipe 23, after the material charging is completed, the first air cylinder 26 is started, the material blocking plug 24 is driven by the first connecting rod 25 to close the discharge hole of the material box 21, the die device 3 is taken down, the fourth fixing block 311 is bolted on the second fixing block 31, wherein the rubber sleeve 34, the connecting ring 35, the supporting pipe 36, the third fixing block 37 and the third connecting rod 38 are of an unde, during the isostatic pressing process, water flows into the supporting tube 36 through the second through hole 39 and the third through hole 310, the rubber sleeve 34 is pressurized to form powder, when the mold is removed, the screw on the third connecting rod 38 is removed, the second fixed block 31 can be removed, and then the outer pipe mold 33 on the third fixed block 37 can be removed.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The isobaric molding preparation method of the polytetrafluoroethylene pipeline and pipe lining comprises a machine body (1), a charging device (2) and a die device (3), and is characterized in that: the material loading device comprises a machine body (1), wherein a loading device (2) is arranged on one side inner wall of the machine body (1), the loading device (2) comprises a material box (21), a connecting pipe (22), a discharging pipe (23), a material blocking plug (24), a first connecting rod (25), a first air cylinder (26), a first fixed block (27), a second air cylinder (28), a sliding block (29), a connecting block (210), a sliding groove (211) and a second connecting rod (212), the top end inner wall of the machine body (1) is fixedly connected with the material box (21), the bottom end outer wall of the material box (21) is fixedly connected with the connecting pipe (22), the discharging pipe (23) is fixedly connected with the one side inner wall of the connecting pipe (22), the material blocking plug (24) is sleeved on the inner wall of one side of the material box (21), the top end outer wall of the material blocking plug (24) is fixedly connected with the first connecting rod (25), the, the first connecting rod (25) is fixedly connected to the outer wall of one side of the output end of the first air cylinder (26), first fixing blocks (27) are symmetrically fixed on the inner walls of the two sides of the machine body (1), the outer wall of the top end of the first fixing block (27) is fixedly connected with the second air cylinder (28), a sliding block (29) is fixedly connected to the outer wall of one side of the output end of the second air cylinder (28), a second connecting rod (212) is fixedly connected to the outer wall of the top end of the sliding block (29), connecting blocks (210) are symmetrically fixed on the inner wall of the top end of the machine body (1), a sliding groove (211) is formed in the outer wall of one side of each connecting block (210), the sliding block (29) is slidably connected to the inner wall of one side of the sliding groove (211), and a die device (;
the die device (3) comprises a second fixing block (31), a first through hole (32), a pipeline outer die (33), a rubber sleeve (34), a connecting ring (35), a supporting tube (36), a third fixing block (37), a third connecting rod (38), a second through hole (39), a third through hole (310) and a fourth fixing block (311), wherein the second fixing block (31) is arranged on the inner wall of one side of the machine body (1), the first through hole (32) is symmetrically arranged on the outer wall of one side of the second fixing block (31), the second connecting rod (212) is sleeved on the inner wall of one side of the first through hole (32), the connecting ring (35) is sleeved on the inner wall of the bottom end of the second fixing block (31), the supporting tube (36) is fixedly connected on the outer wall of the bottom end of the connecting ring (35), the third fixing block (37) is fixedly connected on the outer wall of the bottom end of the, and a third connecting rod (38) is fixedly connected to the outer wall of the top end of the third fixing block (37), and the third connecting rod (38) is fixed to the outer wall of the bottom end of the second fixing block (31) through bolts.
2. A method for preparing a pipe fitting lining of a polytetrafluoroethylene pipeline by isostatic pressing comprises the steps of firstly, charging a mold; step two, cleaning the die; step three, equal pressure forming; step four, demolding and checking; the method is characterized in that:
in the first step, the mold charging comprises the following steps:
1) the screw on the third connecting rod (38) is dismounted, and the second fixing block (31) is taken down;
2) the outer pipe mold (33) to be lined is installed in the installation groove in the third fixed block (37);
3) re-fixing the second fixed block (31) to the third connecting rod (38);
4) -mounting the mould device (3) in the charging device (2);
5) starting the charging device (2) to automatically charge;
6) closing the charging device (2), taking down the die device (3), and fixing a fourth fixing block (311) on the second fixing block (31) through bolts;
in the second step, the mold cleaning is to clean the filled mold device (3) by water;
in the third step, the isostatic pressing comprises the following steps:
1) putting the cleaned die device (3) into a high-pressure bin;
2) filling water into the high-pressure bin, pressurizing the high-pressure bin, and maintaining the pressure for a period of time;
3) opening the high-pressure bin and taking out the die device (3);
in the fourth step, the mold removal inspection comprises the following steps:
1) the screw on the third connecting rod (38) is dismounted, and the second fixing block (31) is taken down;
2) the external pipe mould (33) is taken out and the lining inside the external pipe mould is checked whether to meet the standard.
3. The isostatic compaction method for preparing polytetrafluoroethylene pipe and pipe lining according to claim 1, wherein the isostatic compaction method comprises the following steps: the outer wall of one side of the supporting pipe (36) is sleeved with a rubber sleeve (34), one end of the rubber sleeve (34) is fixedly connected to the outer wall of the bottom end of the connecting ring (35), the other end of the rubber sleeve is fixedly connected to the outer wall of the top end of the third fixing block (37), and the outer wall of one side of the rubber sleeve (34) is sleeved with a pipeline outer die (33).
4. The isostatic compaction method for preparing polytetrafluoroethylene pipe and pipe lining according to claim 1, wherein the isostatic compaction method comprises the following steps: and a fourth fixing block (311) is fixed on the outer wall of the top end of the second fixing block (31) through a bolt.
5. The isostatic compaction method for preparing polytetrafluoroethylene pipe and pipe lining according to claim 1, wherein the isostatic compaction method comprises the following steps: third through holes (310) are symmetrically formed in the outer wall of one side of the second fixing block (31), and second through holes (39) are symmetrically formed in the outer wall of one side of the third fixing block (37).
6. The isostatic compaction method for preparing polytetrafluoroethylene pipe and pipe lining according to claim 1, wherein the isostatic compaction method comprises the following steps: and water inlet holes are distributed on the outer wall of one side of the supporting tube (36).
7. The isostatic compaction method for preparing polytetrafluoroethylene pipe and pipe lining according to claim 1, wherein the isostatic compaction method comprises the following steps: the connecting tube (22) is of the corrugated tube type.
8. The method for isostatic pressing preparation of polytetrafluoroethylene pipe and tube liners according to claim 2, wherein: in the step three 2), the pressurizing pressure is 40MPa, and the pressure maintaining time is 10 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010775863.1A CN111791420B (en) | 2020-08-05 | 2020-08-05 | Isobaric forming preparation method of polytetrafluoroethylene pipeline and pipe lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010775863.1A CN111791420B (en) | 2020-08-05 | 2020-08-05 | Isobaric forming preparation method of polytetrafluoroethylene pipeline and pipe lining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111791420A true CN111791420A (en) | 2020-10-20 |
| CN111791420B CN111791420B (en) | 2024-09-13 |
Family
ID=72827659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010775863.1A Active CN111791420B (en) | 2020-08-05 | 2020-08-05 | Isobaric forming preparation method of polytetrafluoroethylene pipeline and pipe lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111791420B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893837A (en) * | 2021-01-20 | 2021-06-04 | 陈烈 | Method for manufacturing high-pressure-resistant and negative-pressure-resistant lining of composite steel mesh |
| CN114932648A (en) * | 2022-05-05 | 2022-08-23 | 桂林航天工业学院 | PVC plastic tubing hot press unit |
| CN115008668A (en) * | 2022-06-29 | 2022-09-06 | 南通特耐流体设备有限公司 | Isobaric forming device for polytetrafluoroethylene pipe lining |
| WO2022267260A1 (en) * | 2021-06-25 | 2022-12-29 | 江苏金氟隆防腐设备有限公司 | Isobaric molding process for inner and outer hydraulic fluorine-lined pipes |
| CN115570733A (en) * | 2022-10-27 | 2023-01-06 | 南通特耐流体设备有限公司 | Isobaric former of polytetrafluoroethylene straight tube lining |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102966A (en) * | 1975-04-16 | 1978-07-25 | Produits Chimiques Ugine Kuhlmann | Method of molding polytetrafluoroethylene |
| CN102632578A (en) * | 2012-03-21 | 2012-08-15 | 东阳市四达氟塑有限公司 | Polytetrafluoroethylene isostatic pressure molding device and pipeline lining method by aid of same |
| CN104552971A (en) * | 2014-11-28 | 2015-04-29 | 浙江歌瑞新材料有限公司 | Negative-pressure-resistant high-temperature-resistant PTFE pipe for isostatic pressing |
| CN209580266U (en) * | 2019-02-18 | 2019-11-05 | 贵州工程应用技术学院 | A kind of molding machine of polytetrafluoroethylcontainer container backing layer |
| CN212312523U (en) * | 2020-08-05 | 2021-01-08 | 南通特耐流体设备有限公司 | Isobaric molding preparation facilities of polytetrafluoroethylene pipeline and pipe fitting lining |
-
2020
- 2020-08-05 CN CN202010775863.1A patent/CN111791420B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102966A (en) * | 1975-04-16 | 1978-07-25 | Produits Chimiques Ugine Kuhlmann | Method of molding polytetrafluoroethylene |
| CN102632578A (en) * | 2012-03-21 | 2012-08-15 | 东阳市四达氟塑有限公司 | Polytetrafluoroethylene isostatic pressure molding device and pipeline lining method by aid of same |
| CN104552971A (en) * | 2014-11-28 | 2015-04-29 | 浙江歌瑞新材料有限公司 | Negative-pressure-resistant high-temperature-resistant PTFE pipe for isostatic pressing |
| CN209580266U (en) * | 2019-02-18 | 2019-11-05 | 贵州工程应用技术学院 | A kind of molding machine of polytetrafluoroethylcontainer container backing layer |
| CN212312523U (en) * | 2020-08-05 | 2021-01-08 | 南通特耐流体设备有限公司 | Isobaric molding preparation facilities of polytetrafluoroethylene pipeline and pipe fitting lining |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893837A (en) * | 2021-01-20 | 2021-06-04 | 陈烈 | Method for manufacturing high-pressure-resistant and negative-pressure-resistant lining of composite steel mesh |
| CN112893837B (en) * | 2021-01-20 | 2022-08-26 | 陈烈 | Method for manufacturing high-pressure-resistant and negative-pressure-resistant lining of composite steel mesh |
| WO2022267260A1 (en) * | 2021-06-25 | 2022-12-29 | 江苏金氟隆防腐设备有限公司 | Isobaric molding process for inner and outer hydraulic fluorine-lined pipes |
| CN114932648A (en) * | 2022-05-05 | 2022-08-23 | 桂林航天工业学院 | PVC plastic tubing hot press unit |
| CN114932648B (en) * | 2022-05-05 | 2023-08-08 | 桂林航天工业学院 | PVC plastic tubing hot press unit |
| CN115008668A (en) * | 2022-06-29 | 2022-09-06 | 南通特耐流体设备有限公司 | Isobaric forming device for polytetrafluoroethylene pipe lining |
| CN115008668B (en) * | 2022-06-29 | 2024-04-19 | 南通特耐流体设备有限公司 | Isobaric forming device of polytetrafluoroethylene tubular product lining |
| CN115570733A (en) * | 2022-10-27 | 2023-01-06 | 南通特耐流体设备有限公司 | Isobaric former of polytetrafluoroethylene straight tube lining |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111791420B (en) | 2024-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111791420A (en) | Isobaric forming preparation method of polytetrafluoroethylene pipeline and pipe fitting lining | |
| CN212312523U (en) | Isobaric molding preparation facilities of polytetrafluoroethylene pipeline and pipe fitting lining | |
| CN106764192B (en) | A kind of direct antiseepage static conductive combination threeway of preset antiseepage electric smelting and production method | |
| CN111497219B (en) | Preparation method of steel pipe elbow lining | |
| US3454997A (en) | Ceramic molding apparatus | |
| CN110814337A (en) | Simple low-cost cold isostatic pressing die and implementation method thereof | |
| CN112060511B (en) | High polymer material casting molding equipment under vacuum state | |
| CN213382825U (en) | Large-scale paint kettle rapid prototyping mould | |
| CN100391900C (en) | Ceramic product forming process and producing apparatus | |
| CN115178638A (en) | Auxiliary heating extrusion forming device and process for prefabricated three-way joint | |
| CN212352774U (en) | Injection mold convenient to take off material | |
| CN212979367U (en) | Carbon paste heating/cooling vibration forming die | |
| CN208392476U (en) | A kind of horizontal more injection hole injection molding machines | |
| CN208687205U (en) | A kind of steel lining polytetrafluoroethylene (PTFE) bend pipe | |
| CN102514200A (en) | Hot extrusion and cold compression forming method of plastic inspection well | |
| CN206487972U (en) | A kind of direct antiseepage static conductive combination threeway of preset antiseepage electric smelting | |
| CN108644515A (en) | A kind of steel lining polytetrafluoroethylene (PTFE) bend pipe and its mould pressing process | |
| CN218699853U (en) | High-pressure slip casting device for ceramic sanitary ware production | |
| CN218022297U (en) | Full-automatic liquid filling production facility of high temperature silica gel | |
| CN214562421U (en) | Polyethylene lightweight vehicle air conditioner tuber pipe processingequipment | |
| CN209409283U (en) | A kind of dish-washing machine rapid shaping liner pinoplastics moldings | |
| CN212948717U (en) | Injection molding vulcanizing machine for producing automobile rubber products | |
| CN220348994U (en) | Mould forming device with rapid cooling function | |
| CN220464574U (en) | Pressing and forming structure die | |
| CN209440408U (en) | A kind of semi-finished product processing compacting tool set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: No. 1 Liandian Road, Jiuhua Town, Rugao City, Nantong City, Jiangsu Province, 226500 Applicant after: Nantong Tenai fluid equipment Co.,Ltd. Address before: 226500 group 13, Siwei village, Jiuhua Town, Rugao City, Nantong City, Jiangsu Province Applicant before: Nantong Tenai fluid equipment Co.,Ltd. Country or region before: China |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |