CN102490353A - Special chain tong for production of teflon - Google Patents
Special chain tong for production of teflon Download PDFInfo
- Publication number
- CN102490353A CN102490353A CN201110385666XA CN201110385666A CN102490353A CN 102490353 A CN102490353 A CN 102490353A CN 201110385666X A CN201110385666X A CN 201110385666XA CN 201110385666 A CN201110385666 A CN 201110385666A CN 102490353 A CN102490353 A CN 102490353A
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- pincers
- crank
- chain
- tong
- handle
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Abstract
The invention discloses a special chain tong for production of a soft membrane. The special chain tong comprises a chain tong body, a tong handle, a crank, a roof and a chopping block. The tong handle and the crank are respectively fixedly connected with an upper part of the chain tong body, and the tong handle is in transmission connection with the roof through the crank; the roof is arranged right above the chopping block and can approach to or depart from the chopping block along a vertical direction as rotation of the tong handle; and the chopping block is fixedly connected with the chain tong body. Preferably, an elastic reset component for driving the chain tong to restore an initial position is arranged between the tong handle and the crank and comprises a cylindrical spring arranged in a blind hole at a lower end of the tong handle; and two ends of the cylindrical spring are respectively connected with the tong handle and the crank. The invention avoids a problem of tong disengaging when a membrane is pushed out of the tong port and a problem of tong hooking when the roof moves upward to open the tong, so as to ensure stable processing of stretching production of the soft membrane.
Description
Technical field
The present invention relates to soft film, particularly a kind of horizontal expanding equipment of the processing and manufacturing technical field of microporous teflon membran relates in particular to a kind of soft film and produces special-purpose chain pincers.
Background technology
The manufacturing of expanded polytetrafluoroethylsealing miillpore filter has a lot of operations, like batch mixing, striking adobe, push, calendering, degreasing, longitudinal stretching, laterally expanding, thermal finalization etc.In horizontal expanding operation; Need to roll in the chain pincers of band by the inlet feeding both sides of expander and clamp; The chain pincers is contained on the chain, the chain band the chain pincers along track by narrow to wide operation, under action of temperature, draw the base band expanding to become the microporous barrier of desired thickness, width with polytetrafluoroethylene (PTFE) is vertical.The chain pincers is wherein very crucial parts, but the production that normally closed cloth gripper that adopts at present or BOPP film dibit film pincers all are not suitable for the PTFE microporous barrier.Structure with regard to these pincers; Its maxilla (or claiming presser feet); With pincers handle one; In the hinge rotation between wherein of pincers handle under the effect of driving the pincers device, close the pincers device (or one of which or both have), maxilla be movement in a curve with below be fixed on the chopping block engagement on the pincers body and separate, drive pincers and close pincers and move.When expander inlet chain pincers closes pincers, PTFE is vertical to draw base band to be clamped, the effect of beginning cross directional stretch; In the outlet of expander, when pincers left by the chain pincers, deviate from by the pincers mouth drawing good PTFE film, be wound onto on the winder, it is for use to become finished product.The pincers of opening of this arc closes the pincers motion exactly; In the production of PTFE microporous barrier, brought trouble: draw base band higher because polytetrafluoroethylene (PTFE) is vertical, can it only be pressed on the chopping block of bottom pincers body by the maxilla of arcuate movement unlike vertical drawstring stiffnesses such as PP, PET; Poly tetrafluoroethylene is soft, be clamminess, and the arcuate movement of maxilla can be easily draws base band to release from chopping block with the PTFE of expander inlet feeding is vertical, can't clamp; Causing " taking off pincers " phenomenon, can not be arc and open the pincers motion in the outlet of expander because of pincers with the vertical base band expanding film forming of drawing of PTFE therefore; Often the PTFE microporous barrier is sticked on maxilla and can't come off; Produce the hook phenomenon, and then make the film that draws torn or reel to go back, have to shut down with the motion of chain pincers.For this reason, the inlet that people are employed in expander again increases intake mechanism or improves inlet mode, or in the outlet of expander demoulding device instrument is installed and is reduced extension film phenomenon, but these schemes all can not finely overcome foregoing problems.And, almost in the production process of all thin and soft films, all exists and the poly tetrafluoroethylene production process in the same problem that occurs.
Summary of the invention
The objective of the invention is to propose a kind of poly tetrafluoroethylene and produce special-purpose chain pincers to deficiency of the prior art, it can make, and expander is stable, the softness of the similar PTFE microporous barrier of high-quality production, the film that is clamminess.
For realizing the foregoing invention purpose, the present invention has adopted following technical scheme:
A kind of soft film is produced special-purpose chain pincers; It comprises chain pincers body, pincers handle, crank, maxilla and chopping block; Said pincers handle and crank are fixedly connected with chain pincers body top through a rotating shaft respectively, and said pincers handle is in transmission connection through crank and maxilla, and said maxilla is located at directly over the chopping block; And can vertically approach with the rotation of pincers handle or away from chopping block, said chopping block is connected with chain pincers body-fixed.
Preferably, bearing pin is adopted in said rotating shaft, and select location between the said pincers handle two ends and the select location between the crank two ends are fixedly connected with chain pincers body top through a bearing pin respectively.
Said pincers handle lower end and crank one end are hinged, and the said crank other end and maxilla are hinged.
Said pincers handle lower end one bearing pin and crank one end are hinged, and the said crank other end is hinged through a crank rear pin shaft and maxilla.
Also be provided with between said pincers handle and the crank and be used to drive the elastic reset member that the pincers handle is replied initial position.
Said elastic reset member preferably is located at the helical spring in the blind hole of pincers handle lower end, and said helical spring two ends are connected with crank with the pincers handle respectively.
Angle between the said pincers handle front and rear is 90～180 °, and the angle between the said crank front and rear is 20～90 °.
Preferably, the angle between the said pincers handle front and rear is at 90～180 °, and the angle between the said crank front and rear is 30～70 °.
Said maxilla both sides are also hinged with a side connecting rod one end respectively, and wherein, each side connecting rod other end is also hinged with chain pincers body.
The protrusion piece bottom of said chain pincers body bottom also is fixedly connected with lube plate.
The present invention has thoroughly changed the un-reasonable phenomenon of existing normally closed cloth gripper or dibit cloth gripper production biaxial tension microporous teflon membran; Change in the past chain pincers pincers handle bottom (being commonly called as maxilla) around pincers handle axle from the inside to surface arc close pincers (transferring closure to) by opening or from outside to inside the arc forms of motion of driving pincers (transferring opening to) by closure for the pincers handle drive crank maxilla is moved upward (transferring out pincers to by closing pincers) or make maxilla move downward (by open pincers transfer to close pincers) the pattern that moves up and down, can not produce film is released the problem that " taking off pincers " appears in the pincers mouth.In the outlet of stretching-machine film, the maxilla pincers that moves upward out equally can not occur film is hung on the maxilla and the situation of " extension pincers " takes place yet, thereby guarantee stable the carrying out that soft film stretches and produces.
Description of drawings
Fig. 1 is the stereogram of the present invention's one preferred embodiment medium chain pincers;
Fig. 2 is the right view of the present invention's one preferred embodiment medium chain pincers;
Fig. 3 is the vertical view of the present invention's one preferred embodiment medium chain pincers;
Fig. 4 is the front view of the present invention's one preferred embodiment medium chain pincers;
Fig. 5 is the B-B face cutaway view of Fig. 4 medium chain pincers;
Each assembly and Reference numeral thereof are respectively among the figure: bearing pin 2 before the chain pincers body 1, crank, spring 3, pincers handle 4, bearing pin 5, maxilla 6, chopping block 7, crank rear pin shaft 8, crank 9, bearing pin 10, side bearing pin 12,14, side connecting rod 13, lube plate 15.
The specific embodiment
Consult Fig. 1-5, this chain pincers that is exclusively used in the polytetrafluoroethylene (PTFE) film production process is mainly by body 1, bearing pin 2 before the crank, and spring 3, pincers handle 4, bearing pin 5, maxilla 6, chopping block 7, crank rear pin shaft 8, crank 9, side bearing pin 12,14, side connecting rod 13 and lube plate 15 are formed.Three installing holes that circular hole 11 is chains on the body 1 wherein, its size is relevant with the kind of chain; The place one's entire reliance upon shape of guide rail groove of the bottom shape of body 1; Lube plate is positioned at the protrusion piece bottom of chain pincers body foot, plays a part lubricated and protection chain pincers body bottom and guide rail channel bottom upper surface, when the lubricious strip excessive wear, can change.
Inlet at expander has out the pincers device; Promoting pincers handle 4 top ends rotates counterclockwise; Pincers handle 4 is around bearing pin 5 rotations; Its bottom apex connects with crank through bearing pin 10 and throw crank 9 clockwise rotates around bearing pin 2, and the other end of crank is through bearing pin 8 and maxilla or presser feet is hinged and lift maxilla 6 vertically upward and leave chopping block 7.4 bearing pins 12 of both sides and 14, connecting rod 13 are used for stablizing maxilla and move upward.At this moment the chain pincers is in out the pincers state.The feeding system of expander will be indulged and draw in the open chain pincers mouth of the base band side feeding left and right sides.Along with the chain band the chain pincers and is moved forward; The pincers handle 4 of chain pincers leaves the pincers device gradually, and under the effect of the spring force of cylindrical compression spring 3, pincers handle 4 turns clockwise around bearing pin 5; Driving crank 9 via bearing pin 10 moves around bearing pin 2 counterclockwise; Connect with maxilla through bearing pin 8, and maxilla tightly is pressed in downwards on the chopping block, nature is indulged PTFE and is drawn base band firmly to clamp.Same, 12,14 and 2 connecting rods of 4 bearing pins of both sides 13 are firm fully moving downward of maxilla.At this moment the chain pincers is in the pincers state that closes.The size of this closing force is with the much relations that are designed with of spring.
The pincers of opening of chain pincers of the present invention closes the arc swing on-off action that pincers motion is different from existing chain pincers, but the chopping block of chain pincers maxilla (or claiming presser feet) and bottom moves up and down, and plays to step up and decontrol the film like this material of PTFE; Particularly; Moving upward is to open the pincers mouth, and soft film is fed in the pincers mouth, and moving downward is closed pincers mouth; Film is firmly clamped, and it can not produce releases the problem that " taking off pincers " appears in the pincers mouth with film.In the outlet of stretching-machine film, the maxilla pincers that moves upward out can not hang over film on the maxilla equally and the situation of " extension pincers " takes place.It has guaranteed stable the carrying out that soft film stretches and produces.
When work; PTFE is vertical to be drawn base band steadily to be clamped by both sides by the chain pincers on Orbiting two chains to move ahead; The layout of guide rail is more and more wideer; At the vertical stretching action that produces on the base band to transversely that draws of PTFE, become the microporous barrier of required fabric width, thickness at last in the synergy stretched of temperature.Outlet at expander has out the pincers device to act on the pincers handle of chain pincers equally, and chain motion is upwards lifted maxilla, and the PTFE film leaves the pincers mouth and continues operation forward, is wound on rolling on the axle of winder, packed for standby use.
Below in conjunction with some preferred embodiments technical scheme of the present invention is described further,
Pressing mouth is profile of tooth, presses the actinal surface Teflon to handle; Crank angle=41 °, pincers handle bent angle=130 °.Applying working condition: 25 meters/minute of speed chains; 180 ℃ of preheat temperatures, 260 ℃ of draft temperatures, 340 ℃ of setting temperatures; Feeding width 150mm, exit width 2200mm, finished product thickness 10 μ m, membrane material is a polytetrafluoroethylene (PTFE).Operating position: the switching pincers is flexible, does not have in the production and takes off pincers and hang the pincers phenomenon.
Pressing mouth is profile of tooth, presses the actinal surface Teflon to handle; Crank angle=41 °, pincers handle bent angle=130 °.Applying working condition: 25 meters/minute of speed chains; 180 ℃ of preheat temperatures, 260 ℃ of draft temperatures, 340 ℃ of setting temperatures; Feeding width 150mm, exit width 2200mm, finished product thickness 20 μ m, membrane material is a polytetrafluoroethylene (PTFE).Operating position: the switching pincers is flexible, does not have in the production and takes off pincers and hang the pincers phenomenon.
In sum, chain pincers pincers mouth clamping thickness of the present invention is when 0～300 μ m changes within the specific limits, and chucking power changes in 37～36N scope, and clamping is reliable, and it is flexible to open and close pincers, does not have and takes off pincers and hang the pincers phenomenon.
The maximum difference of the present invention and existing chain pincers is that the pincers handle no longer is the rigid structure of one with maxilla, but connects with maxilla through middle crank, opens pincers device driving pincers handle and seesaws as arc, and maxilla then moves up and down.Moving upward is to open the pincers mouth, and soft film is fed in the pincers mouth; Moving downward is closed pincers mouth; Film is firmly clamped; It can not produce releases the problem that " taking off pincers " appears in the pincers mouth with film, in the outlet of stretching-machine film, and the maxilla pincers that moves upward out; Can film not hung on the maxilla and the situation of " extension pincers " takes place equally, thereby guarantee stable the carrying out that soft film stretches and produces.
Although embodiment of the present invention are open as above; But it is not restricted to listed utilization in specification and the embodiment; It can be applied to various suitable the field of the invention fully, for being familiar with those skilled in the art, can easily realize other modification; Therefore under the universal that does not deviate from claim and equivalency range and limited, the legend that the present invention is not limited to specific details and illustrates here and describe.
Claims (10)
1. a soft film is produced special-purpose chain pincers; It is characterized in that it comprises chain pincers body, pincers handle, crank, maxilla and chopping block, said pincers handle is fixedly connected with chain pincers body top through a rotating shaft respectively with crank; And said pincers handle is in transmission connection through crank and maxilla; Said maxilla is located at directly over the chopping block, and can vertically approach with the rotation of pincers handle or away from chopping block, said chopping block is connected with chain pincers body-fixed.
2. produce special-purpose chain pincers according to the said soft film of claim 1, it is characterized in that, bearing pin is adopted in said rotating shaft, and select location between the said pincers handle two ends and the select location between the crank two ends are fixedly connected with chain pincers body top through a bearing pin respectively.
3. produce special-purpose chain pincers according to the said soft film of claim 1, it is characterized in that, said pincers handle lower end and crank one end are hinged, and the said crank other end and maxilla are hinged.
4. produce special-purpose chain pincers according to the said soft film of claim 1, it is characterized in that, said pincers handle lower end one bearing pin and crank one end are hinged, and the said crank other end is hinged through a crank rear pin shaft and maxilla.
5. produce special-purpose chain pincers according to the said soft film of claim 1, it is characterized in that, also be provided with the elastic reset member that is used to drive pincers handle answer initial position between said pincers handle and the crank.
6. produce special-purpose chain pincers according to the said soft film of claim 4, it is characterized in that, said elastic reset member comprises the helical spring of being located in the blind hole of pincers handle lower end, and said helical spring two ends are connected with crank with the pincers handle respectively.
7. produce special-purpose chain pincers according to each said soft film among the claim 1-6, it is characterized in that, the angle between the said pincers handle front and rear is 90～180 °, and the angle between the said crank front and rear is 20～90 °.
8. produce special-purpose chain pincers according to the said soft film of claim 7, it is characterized in that, the angle between the said pincers handle front and rear is at 90～180 °, and the angle between the said crank front and rear is 30～70 °.
9. produce special-purpose chain pincers according to claim 1 or 3 or 4 said soft films, it is characterized in that, said maxilla both sides are also hinged with a side connecting rod one end respectively, and wherein, each side connecting rod other end is also hinged with chain pincers body.
10. produce special-purpose chain pincers according to the said soft film of claim 1, it is characterized in that, the protrusion piece bottom of said chain pincers body bottom also is fixedly connected with lube plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385666XA CN102490353A (en) | 2011-11-28 | 2011-11-28 | Special chain tong for production of teflon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385666XA CN102490353A (en) | 2011-11-28 | 2011-11-28 | Special chain tong for production of teflon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102490353A true CN102490353A (en) | 2012-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110385666XA Pending CN102490353A (en) | 2011-11-28 | 2011-11-28 | Special chain tong for production of teflon |
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| Country | Link |
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| CN (1) | CN102490353A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526497A (en) * | 2013-09-24 | 2014-01-22 | 江苏小太阳机械科技有限公司 | Cloth gripper for integrally molding blade plate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US616390A (en) * | 1898-12-20 | Island | ||
| US4155148A (en) * | 1977-11-21 | 1979-05-22 | Marshall And Williams Company | Tentering clip |
| JPS56135817U (en) * | 1980-03-17 | 1981-10-15 | ||
| JPS5983624A (en) * | 1982-11-06 | 1984-05-15 | Mitsubishi Heavy Ind Ltd | Grip apparatus for film using tenter clip |
| WO2009084722A1 (en) * | 2007-12-28 | 2009-07-09 | Tonen Chemical Corporation | A closing and opening apparatus of a tenter clip, and defective tenter clip detecting method and device |
| CN202805641U (en) * | 2011-11-28 | 2013-03-20 | 昆山无名机械有限公司 | Chain tong specially used for production of polytetrafluoroethylene membrane |
-
2011
- 2011-11-28 CN CN201110385666XA patent/CN102490353A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US616390A (en) * | 1898-12-20 | Island | ||
| US4155148A (en) * | 1977-11-21 | 1979-05-22 | Marshall And Williams Company | Tentering clip |
| JPS56135817U (en) * | 1980-03-17 | 1981-10-15 | ||
| JPS5983624A (en) * | 1982-11-06 | 1984-05-15 | Mitsubishi Heavy Ind Ltd | Grip apparatus for film using tenter clip |
| WO2009084722A1 (en) * | 2007-12-28 | 2009-07-09 | Tonen Chemical Corporation | A closing and opening apparatus of a tenter clip, and defective tenter clip detecting method and device |
| CN202805641U (en) * | 2011-11-28 | 2013-03-20 | 昆山无名机械有限公司 | Chain tong specially used for production of polytetrafluoroethylene membrane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526497A (en) * | 2013-09-24 | 2014-01-22 | 江苏小太阳机械科技有限公司 | Cloth gripper for integrally molding blade plate |
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Application publication date: 20120613 |