CN216658543U

CN216658543U - Polytetrafluoroethylene preforming device

Info

Publication number: CN216658543U
Application number: CN202121674861.XU
Authority: CN
Inventors: 李同裕
Original assignee: Walford Yangzhou Semiconductor New Material Co ltd
Current assignee: Walford Yangzhou Semiconductor New Material Co ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-06-03
Anticipated expiration: 2031-07-22

Abstract

The utility model discloses a polytetrafluoroethylene preforming device which comprises a device main body, wherein a fixed base is fixedly installed at the bottom of the device main body, a carrying plate, a heating forming die and a feeding and mixing device are installed at the upper end of the device main body, a supporting frame is installed on the outer side of the device main body, a positioning plate is installed at the top of the supporting frame, a driving cylinder is installed at the upper end of the positioning plate, and a lifting rod is installed at the lower end of the driving cylinder. The polytetrafluoroethylene preforming device is provided with the feeding grinding and stirring device, the detachable hot-press forming device and the air-drying carrying device, can be used for conveniently and better grinding and stirring a material body, is convenient for feeding and mixing, can be used for increasing a forming effect, can be used for conveniently carrying out integral forming, can be used for heating, is higher in forming efficiency and more excellent in effect, can be used for changing a forming shape according to actual needs, is simple and practical, and brings better use prospects.

Description

Polytetrafluoroethylene preforming device

Technical Field

The utility model relates to the field of polytetrafluoroethylene preforming, in particular to a polytetrafluoroethylene preforming device.

Background

The polytetrafluoroethylene preforming device is a supporting device for forming polytetrafluoroethylene materials, the polytetrafluoroethylene materials are high molecular compounds formed by polymerizing tetrafluoroethylene, the polytetrafluoroethylene materials have excellent chemical stability, corrosion resistance, sealing property, high lubrication non-adhesiveness, electric insulation property and good ageing resistance, the polytetrafluoroethylene materials can be tubular, rod-shaped, strip-shaped, sheet-shaped, thin films and the like after forming, and along with the continuous development of science and technology, the requirements of people on the manufacturing process of the polytetrafluoroethylene preforming device are higher and higher.

In the prior art, a patent with an authorization publication number of CN201721194657.1 discloses a polytetrafluoroethylene discharging funnel and a polytetrafluoroethylene preforming device, which comprises a funnel body, a funnel body with an inverted cone shape, and a funnel pipe connected to the lower end of the funnel body; the limiting ring is arranged in the funnel pipe and extends along the axial direction of the funnel pipe; the connecting sheet extends along the radial direction of the funnel pipe, one end of the connecting sheet is fixedly connected with the inner wall of the funnel pipe, and the other end of the connecting sheet is fixedly connected with the outer wall of the limiting ring; and at least one partition wall, the setting is in the funnel body, lower extreme and connection piece fixed connection, wherein, the partition wall is the back taper, a plurality of partition walls are separated into a plurality of blowing spaces that are used for throwing in polytetrafluoroethylene granule of different performance with the funnel body, current polytetrafluoroethylene preforming device has certain drawback when using, at first, can not be very convenient carrying out the integrated into one piece operation carrying out using, the shaping is comparatively troublesome, work efficiency is lower, be unfavorable for people's use, in addition, can not be very convenient change, the structure is comparatively single, the shaping shape is single, certain adverse effect has been brought to people's use, for this, we provide a polytetrafluoroethylene preforming device.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a polytetrafluoroethylene preforming device which is provided with a feeding grinding stirring device, a detachable hot-press forming device and an air-drying carrying device, so that the material body can be conveniently and better ground and stirred, feeding and mixing are facilitated, the forming effect is improved, integral forming can be conveniently carried out, heating can be carried out, the forming efficiency is higher, the effect is more excellent, the forming shape can be changed according to actual needs, and the problems in the background technology can be effectively solved.

(II) technical scheme

In order to realize the purpose, the utility model adopts the technical scheme that: the utility model provides a polytetrafluoroethylene preforming device, includes the device main part, the bottom fixed mounting of device main part has unable adjustment base, transport board, thermoforming mould and reinforced compounding device are installed to the upper end of device main part, the support frame is installed in the outside of device main part, the locating plate is installed at the top of support frame, the upper end of locating plate is installed and is driven actuating cylinder, drive actuating cylinder's lower extreme and install the lifter, the hot pressboard is installed to the lower extreme of lifter, the screwed pipe has been seted up to the inner wall of lifter.

As an optimal technical scheme, reinforced grinder is installed to reinforced compounding device's upper end, install the cardboard between reinforced grinder and the reinforced compounding device, the driving machine is installed at reinforced grinder's both ends, the agitator is installed at reinforced compounding device's both ends, the discharging pipe is installed in the outside of reinforced compounding device, the mid-mounting of cardboard has the filter screen, the inlet pipe is installed to reinforced grinder's upper end, the rotary rod is installed to the inboard of driving machine, corotation abrasive disc and reversal abrasive disc are installed to the inboard of rotary rod, the puddler is installed to the inboard of agitator.

As a preferred technical scheme, hot forming die's both sides fixed mounting has the hot plate, the constant head tank has been seted up to hot forming die's inside, temperature monitoring mechanism is installed in hot forming die's the outside, the internally mounted of constant head tank has the shaping groove, the location mouth has been seted up to hot forming die's upper end, the installation extension board is installed to the both sides in shaping groove.

As a preferable technical scheme, a drying net is installed at the upper end of the carrying plate, and a lifting groove is formed in the outer side of the carrying plate.

As an optimal technical scheme, the feeding and mixing device and the feeding and grinding device are integrally formed through pouring, fixed blocks are arranged between the clamping plate and the feeding and mixing device and between the clamping plate and the stirrer, the inner sides of the feeding and mixing device and the stirrer are connected with the outer side of the clamping plate through the fixed blocks in a positioning mode, bearings are arranged between the feeding and mixing device and the stirrer, and the two ends of the feeding and mixing device are movably connected with the inner sides of the stirrer through the bearings.

As a preferable technical scheme, an installation seat is arranged between the driving machine and the feeding grinding device, two ends of the feeding grinding device are connected with the inner side of the driving machine in a positioning manner through the installation seat, the inner side of the driving machine drives a rotating rod to rotate with the forward rotation grinding disc and the reverse rotation grinding disc, and the forward rotation grinding disc and the reverse rotation grinding disc rotate in opposite directions.

As a preferred technical scheme, be provided with the installation piece between thermoforming mould and the hot plate, thermoforming mould's the outside is connected through the inboard location of installation piece and hot plate, the inboard of constant head tank is connected for dismantling through the outside of locating port, installation extension board and shaping groove.

As a preferable technical scheme, a positioning frame is arranged between the carrying plate and the air drying net, the upper end of the carrying plate is connected with the outer side of the air drying net in a positioning mode through the positioning frame, and the carrying plate and the lifting groove are integrally formed in an injection molding mode.

As a preferred technical scheme, the lower end of the driving cylinder is detachably connected with the upper end of the lifting rod through a threaded pipe.

As a preferred technical scheme, a welding seat is arranged between the device main body and the support frame, and the outer side of the device main body is connected with the inner side of the support frame in a positioning mode through the welding seat.

(III) advantageous effects

Compared with the prior art, the utility model provides a polytetrafluoroethylene preforming device, which has the following beneficial effects: the polytetrafluoroethylene preforming device can conveniently and better grind and stir a material body through the feeding grinding stirring device, the detachable hot-press forming device and the air-drying carrying device, is convenient for feeding and mixing, increases the forming effect, can also be conveniently integrally formed, can be heated, has higher forming efficiency and more excellent effect, can change the forming shape according to actual requirements, firstly, a device main body is arranged at a designated position, the bottom of the device main body is positioned and protected through a fixed base, the positions of a heating forming die and a feeding and mixing device are well arranged, a heating plate is arranged at the outer side of the heating forming die, can be heated, carries out temperature monitoring through a temperature monitoring mechanism, a positioning groove is arranged at the inner side of the heating forming die, can be arranged on a forming groove, and the forming groove is disassembled and assembled through a positioning hole and an installing support plate, different die types can be changed according to actual use, feeding and grinding operations are carried out at the positions of the feeding and mixing device and the feeding and grinding device, polytetrafluoroethylene resin is led into the feeding and grinding device from the position of a feeding pipe, a driving machine is started to drive a rotating rod, a forward rotation grinding disc and a reverse rotation grinding disc to rotate, the forward rotation grinding disc and the reverse rotation grinding disc rotate in opposite directions, the polytetrafluoroethylene resin is ground, the rotating rod can stretch and retract, the grinding performance is excellent, ground powdery resin is filtered into the feeding and mixing device from the position of a filter screen, a certain amount of paraffin medicament is added, stirring and mixing are carried out through a stirring rod, the mixed powdery resin is led into a forming groove from the position of a discharging pipe, after the material is led into the forming groove, heating operations are carried out through a heating plate, and a temperature monitoring mechanism monitors the heating temperature, the start drives actuating cylinder, the lifter carries out the dismouting through screwed pipe and the lower extreme that drives actuating cylinder, can carry out the dismouting change to the hot pressboard, correspond the shape of lower extreme shaping groove, drive actuating cylinder drive lifter, the hot pressboard moves down, carry out pressfitting thermoforming operation to powdered resin at the position of shaping groove, after 10-16 min's heating pressfitting, withdraw the position of lifter, resin molding, polytetrafluoroethylene material shaping, can also make appointed shape through tensile mode, polytetrafluoroethylene material after the shaping is put and is air-dried the operation in the upper end of wind drying net, the transport of being convenient for, polytetrafluoroethylene material preparation finishes, whole polytetrafluoroethylene preforming device simple structure, and convenient operation, the effect of using is better for traditional mode.

Drawings

FIG. 1 is a schematic view of the overall structure of a PTFE preforming apparatus according to the present invention.

FIG. 2 is a schematic structural diagram of a feeding and mixing device in a polytetrafluoroethylene preforming device according to the utility model.

FIG. 3 is a schematic structural diagram of a clamping plate in a PTFE preforming apparatus according to the present invention.

FIG. 4 is a schematic structural diagram of a feeding grinder in a PTFE preforming apparatus according to the present invention.

FIG. 5 is a schematic diagram of a grinding disk drive of a PTFE preforming apparatus according to the present invention.

FIG. 6 is a schematic view of the structure of a stirring rod in a PTFE preforming apparatus according to the present invention.

FIG. 7 is a schematic structural diagram of a thermoforming mold in a polytetrafluoroethylene preforming apparatus according to the present invention.

FIG. 8 is a schematic view of a forming groove of a PTFE preforming apparatus according to the present invention.

FIG. 9 is a schematic view of a carrier plate of a PTFE preforming apparatus according to the present invention.

FIG. 10 is a schematic view showing a hot press plate of a PTFE preforming apparatus according to the present invention.

In the figure: 1. a device main body; 2. a carrying plate; 3. a support frame; 4. positioning a plate; 5. a driving cylinder; 6. a charging and grinding device; 7. a lifting rod; 8. heating the forming die; 9. hot pressing plate; 10. a fixed base; 11. a driver; 12. a feed pipe; 13. a feeding and mixing device; 14. clamping a plate; 15. a discharge pipe; 16. a stirrer; 17. a filter screen; 18. a positive rotation grinding disc; 19. reversing the grinding disc; 20. rotating the rod; 21. a stirring rod; 22. heating plates; 23. a temperature monitoring mechanism; 24. positioning a groove; 25. forming a groove; 26. positioning the opening; 27. a wind net; 28. lifting the groove; 29. a threaded pipe; 30. and (5) mounting a support plate.

Detailed Description

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope 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. The examples, in which specific conditions are not specified, were carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

as shown in fig. 1-6, a polytetrafluoroethylene performing device, including device main body 1, the bottom fixed mounting of device main body 1 has unable adjustment base 10, handling board 2, thermoforming mould 8 and reinforced compounding device 13 are installed to the upper end of device main body 1, support frame 3 is installed in the outside of device main body 1, locating plate 4 is installed at the top of support frame 3, the upper end of locating plate 4 is installed and is driven actuating cylinder 5, the lower extreme that drives actuating cylinder 5 is installed lifter 7, hot pressboard 9 is installed to the lower extreme of lifter 7, screwed pipe 29 has been seted up to the inner wall of lifter 7.

Further, reinforced grinder 6 is installed to reinforced compounding device 13's upper end, install cardboard 14 between reinforced grinder 6 and the reinforced compounding device 13, driving machine 11 is installed at reinforced grinder 6's both ends, agitator 16 is installed at reinforced compounding device 13's both ends, discharging pipe 15 is installed in the outside of reinforced compounding device 13, the mid-mounting of cardboard 14 has filter screen 17, inlet pipe 12 is installed to reinforced grinder 6's upper end, rotary rod 20 is installed to driving machine 11's inboard, corotation abrasive disc 18 and reversal abrasive disc 19 are installed to rotary rod 20's inboard, puddler 21 is installed to agitator 16's inboard.

Further, through the mode integrated into one piece of pouring between reinforced compounding device 13 and the reinforced grinder 6, cardboard 14 and reinforced compounding device 13, be provided with the fixed block between the agitator 16, reinforced compounding device 13, the inboard of agitator 16 is passed through the outside location connection of fixed block and cardboard 14, be provided with the bearing between reinforced compounding device 13 and the agitator 16, the inboard swing joint of bearing and agitator 16 is passed through at reinforced compounding device 13's both ends.

Furthermore, a mounting seat is arranged between the driving machine 11 and the feeding grinding device 6, two ends of the feeding grinding device 6 are connected with the inner side of the driving machine 11 through the mounting seat in a positioning manner, the inner side of the driving machine 11 drives the rotating rod 20 to rotate with the forward rotation grinding disc 18 and the reverse rotation grinding disc 19, and the forward rotation grinding disc 18 and the reverse rotation grinding disc 19 rotate in the opposite direction.

The second embodiment:

on the basis of the first embodiment, as shown in fig. 1, 7 and 8, a polytetrafluoroethylene preforming device comprises a device main body 1, a fixing base 10 is fixedly installed at the bottom of the device main body 1, a carrying plate 2, a heating forming mold 8 and a feeding and mixing device 13 are installed at the upper end of the device main body 1, a support frame 3 is installed on the outer side of the device main body 1, a positioning plate 4 is installed at the top of the support frame 3, a driving cylinder 5 is installed at the upper end of the positioning plate 4, a lifting rod 7 is installed at the lower end of the driving cylinder 5, a hot pressing plate 9 is installed at the lower end of the lifting rod 7, and a threaded pipe 29 is arranged on the inner wall of the lifting rod 7.

Further, the heating plates 22 are fixedly mounted on two sides of the heating forming die 8, the positioning groove 24 is formed in the heating forming die 8, the temperature monitoring mechanism 23 is mounted on the outer side of the heating forming die 8, the forming groove 25 is mounted in the positioning groove 24, the positioning opening 26 is formed in the upper end of the heating forming die 8, and the mounting support plates 30 are mounted on two sides of the forming groove 25.

Further, an installation block is arranged between the heating forming die 8 and the heating plate 22, the outer side of the heating forming die 8 is connected with the inner side of the heating plate 22 in a positioning mode through the installation block, and the inner side of the positioning groove 24 is detachably connected with the outer side of the forming groove 25 through the positioning opening 26 and the installation support plate 30.

Example three:

on the basis of the second embodiment, as shown in fig. 1, 9 and 10, a polytetrafluoroethylene preforming device comprises a device body 1, a fixing base 10 is fixedly installed at the bottom of the device body 1, a carrying plate 2, a heating forming mold 8 and a feeding and mixing device 13 are installed at the upper end of the device body 1, a support frame 3 is installed on the outer side of the device body 1, a positioning plate 4 is installed at the top of the support frame 3, a driving cylinder 5 is installed at the upper end of the positioning plate 4, a lifting rod 7 is installed at the lower end of the driving cylinder 5, a hot pressing plate 9 is installed at the lower end of the lifting rod 7, and a threaded pipe 29 is arranged on the inner wall of the lifting rod 7.

Further, the upper end of the carrying plate 2 is provided with a wind drying net 27, and the outer side of the carrying plate 2 is provided with a lifting groove 28.

Further, a positioning frame is arranged between the carrying plate 2 and the air drying net 27, the upper end of the carrying plate 2 is connected with the outer side of the air drying net 27 through the positioning frame in a positioning mode, and the carrying plate 2 and the lifting groove 28 are integrally formed in an injection molding mode.

Further, the lower end of the driving cylinder 5 is detachably connected with the upper end of the lifting rod 7 through a threaded pipe 29.

Furthermore, a welding seat is arranged between the device main body 1 and the support frame 3, and the outer side of the device main body 1 is connected with the inner side of the support frame 3 in a positioning mode through the welding seat.

The working principle is as follows: the utility model comprises a device main body 1, a carrying plate 2, a supporting frame 3, a positioning plate 4, a driving cylinder 5, a feeding and grinding device 6, a lifting rod 7, a heating forming die 8, a hot pressing plate 9, a fixed base 10, a driving machine 11, a feeding pipe 12, a feeding and mixing device 13, a clamping plate 14, a discharging pipe 15, a stirrer 16, a filter screen 17, a forward rotation grinding disc 18, a reverse rotation grinding disc 19, a rotating rod 20, a stirring rod 21, a heating plate 22, a temperature monitoring mechanism 23, a positioning groove 24, a forming groove 25, a positioning opening 26, an air drying net 27, a lifting groove 28, a threaded pipe 29 and an installation support plate 30, wherein when in use, the device main body 1 is firstly installed at a specified position, the bottom of the device is positioned and protected by the fixed base 10, the positions of the heating forming die 8 and the feeding and mixing device 13 are well installed, the heating plate 22 is installed on the outer side of the heating forming die 8, so that heating operation can be carried out, temperature monitoring is carried out through a temperature monitoring mechanism 23, a positioning groove 24 is arranged on the inner side of a heating forming die 8, a forming groove 25 can be installed, the forming groove 25 is disassembled and assembled with an installation support plate 30 through a positioning opening 26, different die types can be replaced according to actual use, feeding grinding operation is carried out on the positions of a feeding material mixing device 13 and a feeding grinding device 6, polytetrafluoroethylene resin is guided into the feeding grinding device 6 from the position of a feeding pipe 12, a driving machine 11 is started, a rotating rod 20, a forward rotation grinding disc 18 and a reverse rotation grinding disc 19 are driven to rotate, the forward rotation grinding disc 18 and the reverse rotation grinding disc 19 rotate in opposite directions, the polytetrafluoroethylene resin is ground, the rotating rod 20 can stretch, the grinding performance is excellent, ground powdery resin is filtered into the feeding material mixing device 13 from the position of a filter screen 17, adding a certain amount of paraffin agent, stirring and mixing through a stirring rod 21, introducing the mixed powdery resin into the inside of a forming groove 25 from the position of a discharge pipe 15, introducing a material body into the inside of the forming groove 25, performing heating operation through a heating plate 22, monitoring the heating temperature through a temperature monitoring mechanism 23, starting a driving air cylinder 5, dismounting and mounting a lifting rod 7 and the lower end of the driving air cylinder 5 through a threaded pipe 29, performing dismounting and mounting replacement on a hot pressing plate 9, driving the lifting rod 7 and the hot pressing plate 9 to move downwards corresponding to the shape of the lower end forming groove 25, performing pressing and heating forming operation on the powdery resin at the position of the forming groove 25, recovering the position of the lifting rod 7 after heating and pressing for 10-16min, molding the resin, forming the polytetrafluoroethylene material, manufacturing a specified shape through a stretching mode, placing the formed polytetrafluoroethylene material at the upper end of an air drying net 27 for air drying operation, the carrying is convenient, and the preparation of the polytetrafluoroethylene material is finished.

It is noted that, herein, relational terms such as first and second (a, b, etc.) 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A polytetrafluoroethylene preforming device comprising a device body (1), characterized in that: the bottom fixed mounting of device main part (1) has unable adjustment base (10), transport board (2), thermoforming mould (8) and reinforced compounding device (13) are installed to the upper end of device main part (1), support frame (3) are installed in the outside of device main part (1), locating plate (4) are installed at the top of support frame (3), the upper end of locating plate (4) is installed and is driven actuating cylinder (5), it installs lifter (7) to drive the lower extreme of actuating cylinder (5), hot platen (9) are installed to the lower extreme of lifter (7), screwed pipe (29) have been seted up to the inner wall of lifter (7).

2. A polytetrafluoroethylene preforming device according to claim 1, wherein: reinforced grinder (6) is installed to the upper end of reinforced compounding device (13), install cardboard (14) between reinforced grinder (6) and reinforced compounding device (13), driving machine (11) are installed at the both ends of reinforced grinder (6), agitator (16) is installed at the both ends of reinforced compounding device (13), discharging pipe (15) are installed in the outside of reinforced compounding device (13), the mid-mounting of cardboard (14) has filter screen (17), inlet pipe (12) are installed to the upper end of reinforced grinder (6), rotary rod (20) are installed to the inboard of driving machine (11), corotation abrasive disc (18) and reversal abrasive disc (19) are installed to the inboard of rotary rod (20), puddler (21) are installed to the inboard of agitator (16).

3. A polytetrafluoroethylene preforming device according to claim 1, wherein: heating plate (22) is fixedly mounted on two sides of heating forming die (8), positioning groove (24) is opened in the heating forming die (8), temperature monitoring mechanism (23) is installed on the outer side of heating forming die (8), forming groove (25) is installed in the positioning groove (24), positioning opening (26) is opened in the upper end of heating forming die (8), and installation support plate (30) is installed on two sides of forming groove (25).

4. A polytetrafluoroethylene preforming device according to claim 1, wherein: the upper end of the carrying plate (2) is provided with an air drying net (27), and the outer side of the carrying plate (2) is provided with a lifting groove (28).

5. A polytetrafluoroethylene preforming device according to claim 2, wherein: the reinforced material mixing device is characterized in that the reinforced material mixing device (13) and the reinforced grinding device (6) are integrally formed through pouring, a fixed block is arranged between the clamping plate (14) and the reinforced material mixing device (13) and the stirrer (16), the inner sides of the reinforced material mixing device (13) and the stirrer (16) are connected with the outer side of the clamping plate (14) through the fixed block in a positioning mode, a bearing is arranged between the reinforced material mixing device (13) and the stirrer (16), and the two ends of the reinforced material mixing device (13) are movably connected with the inner side of the stirrer (16) through the bearing.

6. A polytetrafluoroethylene preforming device according to claim 2, wherein: the grinding machine is characterized in that a mounting seat is arranged between the driving machine (11) and the feeding grinding device (6), two ends of the feeding grinding device (6) are connected with the inner side of the driving machine (11) in a positioning mode through the mounting seat, the inner side of the driving machine (11) drives a rotating rod (20) to rotate with the forward rotation grinding disc (18) and the reverse rotation grinding disc (19), and the forward rotation grinding disc (18) and the reverse rotation grinding disc (19) rotate in the opposite direction.

7. A polytetrafluoroethylene preforming device according to claim 3, wherein: be provided with the installation piece between thermoforming mould (8) and hot plate (22), the inboard location of the outside of thermoforming mould (8) through installation piece and hot plate (22) is connected, the outside that the inboard of constant head tank (24) is passed through locating hole (26), installation extension board (30) and shaping groove (25) is for dismantling to be connected.

8. A polytetrafluoroethylene preforming device according to claim 4, wherein: a positioning frame is arranged between the carrying plate (2) and the air drying net (27), the upper end of the carrying plate (2) is connected with the outer side of the air drying net (27) in a positioning mode through the positioning frame, and the carrying plate (2) and the lifting groove (28) are integrally formed in an injection molding mode.

9. A polytetrafluoroethylene preforming device according to claim 1, wherein: the lower end of the driving cylinder (5) is detachably connected with the upper end of the lifting rod (7) through a threaded pipe (29).

10. A polytetrafluoroethylene preforming device according to claim 1, wherein: a welding seat is arranged between the device main body (1) and the support frame (3), and the outer side of the device main body (1) is connected with the inner side of the support frame (3) in a positioning mode through the welding seat.