CN113651526B - Machining process of core rod - Google Patents
Machining process of core rod Download PDFInfo
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- CN113651526B CN113651526B CN202110881617.9A CN202110881617A CN113651526B CN 113651526 B CN113651526 B CN 113651526B CN 202110881617 A CN202110881617 A CN 202110881617A CN 113651526 B CN113651526 B CN 113651526B
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- Prior art keywords
- core rod
- seat
- lifting
- rod
- limiting
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/01466—Means for changing or stabilising the diameter or form of tubes or rods
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
- C03B37/0146—Furnaces therefor, e.g. muffle tubes, furnace linings
Abstract
The application discloses a machining process of a core rod, which comprises the following steps: 1) Drying the loose core rod bodies with the auxiliary rods at the two ends, and sintering after drying to obtain a coarse core rod; 2) Installing a lifting assembly on the lower rotating seat, enabling the thick core rod to pass through a heating furnace, limiting an auxiliary rod at the upper end of the thick core rod on the upper rotating seat, limiting an auxiliary rod at the lower end of the thick core rod on the lower rotating seat after the auxiliary rod passes through the lifting assembly, heating the thick core rod through the heating furnace, and longitudinally extending the thick core rod through the up-down movement of the upper rotating seat or the lower rotating seat to obtain the core rod; 4) After the extension is finished, the upper rotary seat does not limit the auxiliary rod any more, and the lower rotary seat drives the core rod to move downwards so that the core rod is completely positioned below the heating furnace; 5) By lifting the pulling assembly, the pulling assembly and the mandrel are removed together from the lower swivel block. This application is through setting up extra lifting assembly, makes things convenient for the atress to make workman or mechanized equipment take out the plug from lower swivel seat.
Description
Technical Field
The invention relates to the field of optical fiber preforms, in particular to a processing technology of a core rod.
Background
And during the processing of the core rod, firstly depositing a loose core rod body, then drying and sintering the loose core rod body to obtain a thicker core rod, and then extending the thicker core rod to obtain the core rod with the size meeting the requirement.
In the prior art, in order to guarantee the extension effect, generally extend the operation through the mode of longitudinal extension to the plug, the plug length after stretching can reach 4m, when extending the completion after, need the manual work to lift off the plug from the base, because the plug is longer, the operation degree of difficulty is high.
Disclosure of Invention
The invention provides a machining process of a core rod aiming at the problems.
The technical scheme adopted by the invention is as follows:
a machining process of a core rod comprises the following steps:
1) Drying the loose core rod body with the auxiliary rods at the two ends, and sintering after drying to obtain a coarse core rod;
2) Installing a lifting assembly on the lower rotating seat, enabling the thick core rod to pass through a heating furnace, limiting an auxiliary rod at the upper end of the thick core rod on the upper rotating seat, limiting an auxiliary rod at the lower end of the thick core rod on the lower rotating seat after the auxiliary rod passes through the lifting assembly, heating the thick core rod through the heating furnace, and longitudinally extending the thick core rod through the up-down movement of the upper rotating seat or the lower rotating seat to obtain the core rod;
4) After the extension is finished, the upper rotary seat does not limit the auxiliary rod any more, and the lower rotary seat drives the core rod to move downwards so that the core rod is completely positioned below the heating furnace;
5) By lifting the pulling assembly, the pulling assembly and the mandrel are removed together from the lower swivel block.
Through setting up extra and carrying the subassembly, make things convenient for the atress to make workman or mechanized equipment take out the plug from lower swivel seat.
In one embodiment of the present invention, the steps 2) to 5) are performed by an extension apparatus, where the extension apparatus includes:
the heating furnace is used for heating the coarse core rod;
the upper rotating seat is positioned above the heating furnace and used for limiting an auxiliary rod at the upper end of the core rod and driving the core rod to rotate and move up and down;
the lower swivel base is positioned below the heating furnace and used for limiting an auxiliary rod at the lower end of the core rod and driving the core rod to rotate and move up and down; and
the lifting assembly comprises two split bodies which are in running fit, a through hole and a conical limiting groove positioned on the upper side of the through hole are formed between the two split bodies, an auxiliary rod at the lower end of the mandrel penetrates through the through hole, a conical part at the lower part of the mandrel is in contact with the conical limiting groove, and the two split bodies are also provided with an upwards extending L-shaped lifting handle.
The lifting assembly can be embedded on the lower rotary seat, and the auxiliary rod at the lower end of the core rod can pass through the through hole, so that the connection between the auxiliary rod and the lower rotary seat is not influenced; the conical limiting groove is arranged to be matched with the conical part at the lower part of the core rod, so that the position of the core rod is limited; after the longitudinal extension is finished, the lifting handle is applied with upward acting force, the whole lifting assembly and the mandrel can be driven to move upwards to be separated from the lower swivel base, the mandrel is more convenient to separate due to the design of the lifting assembly, and the two split bodies can be opened in a rotating mode to quickly separate the lifting assembly from the mandrel.
In one embodiment of the present invention, one end of each of the split bodies is a connection end, the other end of each of the split bodies is an open-close end, the connection ends of the two split bodies are rotatably matched with each other through a hinge, the open-close ends of the two split bodies are provided with a locking structure, and the locking structure includes:
the locking plate is rotatably arranged on one split body and is provided with a first through hole;
the first magnet is embedded on the locking plate;
the convex column is positioned on the other split body and is used for being matched with the first through hole;
the second magnet is sleeved outside the root of the convex column and fixed with the split body, and the first magnet and the second magnet are mutually attracted and matched.
The locking plate is sleeved on the convex column through the first through hole, so that the two split bodies can be prevented from being separated, and the locking plate can be effectively prevented from rotating by arranging the first magnet and the second magnet.
In one embodiment of the present invention, the split material is nylon.
In an embodiment of the present invention, the extending apparatus further includes a horizontally disposed guide rail and a transferring mechanism movably disposed on the guide rail, the transferring mechanism includes:
the transfer seat is arranged on the guide rail in a sliding manner and is provided with a limiting hole for inserting the auxiliary rod, the inner diameter of the limiting hole is smaller than the outer diameter of the lower end of the lifting assembly, and the depth of the limiting hole is smaller than or equal to the distance of the auxiliary rod penetrating through the hole;
the driving structure is used for driving the transfer seat to reciprocate along the direction of the guide rail;
a first lifting element rotatably mounted on the transfer base,
the U-shaped lifting frame is fixed on the movable rod of the first lifting element, and two arms of the lifting frame are used for being matched with the lifting handle respectively;
the rotating motor is installed on the transfer seat, matched with the first lifting element through a gear set and used for driving the first lifting element to rotate.
The driving structure can be that the motor accurately drives the transfer seat to move through a transmission structure, and the transmission structure can be a gear rack or a ball screw pair and other existing structures.
The working principle of the transfer mechanism is as follows: after the longitudinal extension of the core rod is finished, the driving structure works to drive the transfer mechanism to move to one side of the lower swivel base, two arms of the lifting frame are respectively located below two lifting handles, the first lifting element works to drive the lifting frame to move upwards, the lifting frame drives the lifting assembly and the core rod to move upwards together, then the motor works to rotate, so that the first lifting element rotates to drive the lifting assembly and the core rod to rotate to the position right above the limiting hole, then the first lifting element descends, the auxiliary rod at the lower end of the core rod extends into the limiting hole and is in contact with the bottom of the limiting hole, because the inner diameter of the limiting hole is smaller than the outer diameter of the lower end of the lifting assembly, the depth of the limiting hole is smaller than or equal to the distance of the auxiliary rod penetrating out of the hole, the lifting assembly does not have acting force on the core rod at the moment, the two split bodies can be opened by opening the locking plate, a worker can conveniently and quickly take off the lifting assembly, and the core rod can be moved along with the transfer base along the guide rail.
In one embodiment of the present invention, the extending apparatus further includes a horizontally disposed guide rail and a transferring mechanism movably disposed on the guide rail, the transferring mechanism includes:
the transfer seat is arranged on the guide rail in a sliding manner;
the flattening seat is rotatably arranged on the transfer seat and is provided with a limiting hole for inserting the auxiliary rod, the inner diameter of the limiting hole is smaller than the outer diameter of the lower end of the lifting assembly, and the depth of the limiting hole is smaller than or equal to the distance of the auxiliary rod penetrating through the hole;
the vertical plate is fixed on the flatting seat;
the limiting sleeve is arranged at the upper end of the vertical plate in a sliding mode, the limiting sleeve is sleeved on the auxiliary rod at the upper end of the core rod, and the axis of the limiting sleeve is overlapped with the axis of the limiting block;
the second lifting element is arranged at the upper end of the vertical plate and used for driving the limiting sleeve to move in a reciprocating manner;
the driving structure is used for driving the transfer seat to reciprocate along the direction of the guide rail;
a first lifting element rotatably mounted on the transfer base,
the U-shaped lifting frame is fixed on the movable rod of the first lifting element, and two arms of the lifting frame are respectively matched with the lifting handle;
the rotating motor is installed on the transfer seat, matched with the first lifting element through a gear set and used for driving the first lifting element to rotate.
And the flat-setting motor is used for driving the flat-setting seat to rotate and driving the core rod to change from a vertical state to a horizontal state.
The working principle of the transfer mechanism is as follows: after the longitudinal extension of the core rod is finished, the driving structure works to drive the transfer mechanism to move to one side of the lower swivel base, two arms of the lifting frame are respectively positioned below two lifting handles, the first lifting element works to drive the lifting frame to move upwards, the lifting frame drives the lifting assembly and the core rod to move upwards together, then the motor works to rotate, so that the first lifting element rotates to drive the lifting assembly and the core rod to rotate to the position right above the limiting hole, then the first lifting element descends, the auxiliary rod at the lower end of the core rod extends into the limiting hole and is in contact with the part at the bottom of the limiting hole, the second lifting element drives the limiting sleeve to move downwards, the auxiliary rod sleeved on the upper end of the core rod is reliably limited on the flattening base, both ends of the core rod are reliably limited on the flattening base, because the inner diameter of the limiting hole is smaller than the outer diameter of the lower end of the lifting assembly, the depth of the limiting hole is smaller than or equal to the distance that the auxiliary rod penetrates out of the limiting hole, the lifting assembly has an acting force, the core rod can be opened by opening the locking plate, so that a worker can conveniently and the lifting assembly can be opened from a horizontal state to a horizontal state by the rotation of the flattening motor, and the lifting assembly, and the core rod can be automatically placed in a horizontal state.
In one embodiment of the present invention, the extension apparatus further includes:
the buffer storage frame is arranged on one side of the guide rail and is provided with a limiting notch matched with the core rod;
and the third telescopic element is used for controlling the buffer frame to reciprocate along the length direction vertical to the guide rail.
During actual work, the third telescopic element extends out to drive the buffer storage frame to be close to the guide rail, the flatting seat rotates 90 degrees, the core rod is horizontally placed on the buffer storage frame, then the third telescopic element retracts to drive the buffer storage frame and the core rod on the buffer storage frame to be separated from the guide rail together, namely the auxiliary rod of the core rod is separated from the limiting hole.
In one embodiment of the present invention, the middle lower portion of the leveling seat has a circular arc sidewall, and the circular arc sidewall contacts with the guide rail.
The arc-shaped side wall is in contact with the guide rail, so that the guide rail can support the flatting seat, and the reliable stress of the whole structure is ensured.
In one embodiment of the present invention, a locking hole is formed on one side of the flatting seat facing the transferring seat, an electrically controlled telescopic element matched with the locking hole is arranged on the transferring seat, and a telescopic rod of the electrically controlled telescopic element is matched with the corresponding locking hole.
Through the cooperation of locking hole and automatically controlled telescopic element, can lock and put the flat seat, prevent to put the flat seat and rock, when putting the flat seat and need rotate, automatically controlled telescopic element's telescopic link is retracted, puts the flat seat and can rotate with the roating seat relatively this moment. In practical application, the electrically controlled telescopic element may be an electromagnet, an electric push rod, etc.
In one embodiment of the invention, the upper surfaces of the two arms of the lifting frame are provided with vertical parts, and the vertical parts are provided with contact sensors which are used for being matched with a lifting handle.
The position feedback can be carried out through the contact sensor, and the position of the lifting frame is ensured.
During practical application, each lifting element of this application can be electric putter, cylinder or pneumatic cylinder.
The invention has the beneficial effects that: through setting up extra and carrying the subassembly, make things convenient for the atress to make workman or mechanized equipment take out the plug from lower swivel seat.
Description of the drawings:
FIG. 1 is a schematic view of a mandrel bar machining process according to the present application;
FIG. 2 is a schematic view of a mandrel and pulling assembly;
FIG. 3 is a schematic view of the structure of a pull assembly;
FIG. 4 is a schematic view of another angle of the pulling assembly;
FIG. 5 is a partial schematic view of an extension apparatus;
fig. 6 is an enlarged view at a in fig. 5.
The figures are numbered:
1. rotating the rotary base upwards; 2. a heating furnace; 3. a lower swivel seat; 4. a core rod; 5. an auxiliary rod; 6. a pull-up assembly; 7. splitting; 8. through the aperture; 9. a conical limiting groove; 10. a tapered portion; 11. lifting the handle; 12. a connecting end; 13. opening and closing ends; 14. a locking plate; 15. a first through hole; 16. a convex column; 17. a guide rail; 18. a transfer mechanism; 19. a transfer seat; 20. flattening the seat; 21. a limiting hole; 22. a vertical plate; 23. a limiting sleeve; 24. a second lifting element; 25. a first lifting element; 26. a lifting frame; 27. an arm; 28. rotating the motor; 29. a cache shelf; 30. a limiting notch; 31. a third telescopic element; 32. a circular arc-shaped side wall; 33. an electrically controlled telescopic element; 34. a vertical portion; 35. a contact sensor; 36. and (7) a hinge.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, a machining process of a core rod includes the following steps:
1) Drying the loose core rod 4 with the auxiliary rods 5 at the two ends, and sintering after drying to obtain a coarse core rod 4;
2) Installing a lifting assembly 6 on a lower rotating seat 3, enabling a thick core rod 4 to pass through a heating furnace 2, limiting an auxiliary rod 5 at the upper end of the thick core rod 4 on an upper rotating seat 1, limiting an auxiliary rod 5 at the lower end of the thick core rod 4 on the lower rotating seat 3 after passing through the lifting assembly 6, heating the thick core rod 4 through the heating furnace 2, and longitudinally extending the thick core rod 4 through the up-and-down movement of an upper rotating seat 1 or a lower rotating seat 3 to obtain a core rod 4;
4) After the extension is finished, the upper rotary seat 1 does not limit the auxiliary rod 5, and the lower rotary seat 3 drives the core rod 4 to move downwards, so that the core rod 4 is completely positioned below the heating furnace 2;
5) By lifting the pulling assembly 6, the pulling assembly 6 is removed together with the core rod 4 from the lower swivel base 3.
By arranging the additional lifting assembly 6, the core rod 4 is conveniently stressed, so that a worker or mechanized equipment can take out the core rod 4 from the lower swivel base 3.
As shown in fig. 1, 2, 3 and 4, in the present embodiment, steps 2) to 5) are performed by an extension apparatus including:
a heating furnace 2 for heating the coarse core rod 4;
the upper rotating base 1 is positioned above the heating furnace 2, and the upper rotating base 1 is used for limiting an auxiliary rod 5 at the upper end of the core rod 4 and driving the core rod 4 to rotate and move up and down;
the lower rotary seat 3 is positioned below the heating furnace 2, and the lower rotary seat 3 is used for limiting an auxiliary rod 5 at the lower end of the core rod 4 and driving the core rod 4 to rotate and move up and down; and
the lifting assembly 6 is used for being installed on the lower rotary seat 3, the lifting assembly 6 comprises two split bodies 7 which are in running fit, a through hole 8 and a conical limiting groove 9 located on the upper side of the through hole 8 are formed between the two split bodies 7, the auxiliary rod 5 at the lower end of the core rod 4 is used for penetrating through the through hole 8, a conical part 10 at the lower portion of the core rod 4 is used for being in contact with the conical limiting groove 9, and the two split bodies 7 are further provided with an L-shaped lifting handle 11 which extends upwards.
The pulling assembly 6 can be embedded on the lower rotary seat 3, and the auxiliary rod 5 at the lower end of the mandrel 4 can pass through the through hole 8, so that the connection between the auxiliary rod 5 and the lower rotary seat 3 is not influenced; the position of the mandrel 4 can be limited by arranging the conical limiting groove 9 to be matched with the conical part 10 at the lower part of the mandrel 4; after the longitudinal extension is finished, the lifting handle 11 is exerted with upward acting force, the whole lifting assembly 6 and the mandrel 4 can be driven to move upwards to be separated from the lower swivel base 3, the mandrel 4 is more convenient to separate due to the design of the lifting assembly 6, and the two split bodies 7 can be rotated and opened at the back to quickly separate the lifting assembly 6 from the mandrel 4.
As shown in fig. 3 and 4, in this embodiment, one end of each of the split bodies 7 is a connection end 12, the other end is an opening and closing end 13, the connection ends 12 of the two split bodies 7 are rotatably engaged with each other through hinges 36, the opening and closing ends 13 of the two split bodies 7 are provided with a locking structure, and the locking structure includes:
the locking plate 14 is rotatably arranged on one split body 7, and the locking plate 14 is provided with a first through hole 15;
a first magnet (not shown) embedded in the locking plate 14;
the convex column 16 is positioned on the other split body 7, and the convex column 16 is used for matching with the first through hole 15;
the second magnet (not shown in the figure) is sleeved at the root part of the convex column 16 and fixed with the split body 7, and the first magnet and the second magnet are mutually attracted and matched.
Locking plate 14 passes through first through-hole 15 overcoat on projection 16, can prevent that two components of a whole that can function independently 7 from breaking away from, through setting up first magnet and second magnet, can effectively prevent locking plate 14 and rotate.
In this embodiment, the material of the split body 7 is nylon.
As shown in fig. 5 and 6, in the present embodiment, the extension apparatus further includes a horizontally disposed guide rail 17 and a transfer mechanism 18 movably disposed on the guide rail 17, and the transfer mechanism 18 includes:
a transfer seat 19 arranged on the guide rail 17 in a sliding manner;
the flatting seat 20 is rotatably arranged on the transfer seat 19, the flatting seat 20 is provided with a limiting hole 21 for the auxiliary rod 5 to be inserted into, the inner diameter of the limiting hole 21 is smaller than the outer diameter of the lower end of the lifting assembly 6, and the depth of the limiting hole 21 is smaller than or equal to the distance of the auxiliary rod 5 penetrating through the hole 8;
a vertical plate 22 fixed on the flatting seat 20;
the limiting sleeve 23 is arranged at the upper end of the vertical plate 22 in a sliding mode, the limiting sleeve 23 is used for being sleeved on the auxiliary rod 5 at the upper end of the core rod 4 in a sleeved mode, and the axis of the limiting sleeve 23 is overlapped with the axis of the limiting block;
the second lifting element 24 is arranged at the upper end of the vertical plate 22 and used for driving the limiting sleeve 23 to reciprocate;
a driving structure (not shown) for driving the transfer base 19 to reciprocate along the guide rail 17;
a first lifting element 25, rotatably mounted on the transfer seat 19,
a U-shaped lifting frame 26 fixed to the movable rod of the first lifting element 25, the two arms 27 of the lifting frame 26 being adapted to cooperate with the lifting handle 11, respectively;
and the rotating motor 28 is installed on the transfer base 19 and is matched with the first lifting element 25 through a gear set, so as to drive the first lifting element 25 to rotate.
And the flattening motor (not shown in the figure) is used for driving the flattening seat 20 to rotate so as to drive the core rod 4 to change from the vertical state to the horizontal state.
The working principle of the transfer mechanism 18 is as follows: after the longitudinal extension of the core rod 4 is finished, the driving structure works to drive the transfer mechanism 18 to move to one side of the lower swivel base 3, the two arms 27 of the lifting frame 26 are respectively positioned below the two lifting handles 11, the first lifting element 25 works to drive the lifting frame 26 to move upwards, the lifting frame 26 drives the lifting assembly 6 and the core rod 4 to move upwards together, then the motor 28 works to drive the first lifting element 25 to rotate to drive the lifting assembly 6 and the core rod 4 to rotate to be right above the limiting hole 21, then the first lifting element 25 descends, the auxiliary rod 5 at the lower end of the core rod 4 extends into the limiting hole 21 to be in contact with the bottom of the limiting hole 21, the second lifting element 24 drives the limiting sleeve 23 to move downwards, the auxiliary rod 5 is sleeved on the upper end of the core rod 4, the two ends of the core rod 4 are reliably limited on the flat base 20, the inner diameter of the limiting hole 21 is smaller than the outer diameter of the lifting assembly 6, the depth of the limiting hole 21 is smaller than or equal to the distance that the auxiliary rod 5 penetrates through the hole 8, at the moment, the lifting assembly 6 does not have an acting force on the core rod 4, the two locking plates 14 can be opened, so that the lifting assemblies 7 can be conveniently opened, the lifting assembly 6 can be conveniently and the lifting assembly can be taken out to be moved to be in a horizontal state along with the horizontal guide rail 19, and a horizontal guide rail 17, and a worker, and the lifting assembly 4 can be moved away automatically, and the horizontal guide rail can be moved away along with the horizontal guide rail, and the horizontal guide rail 17, and the lifting assembly 4, and the horizontal guide rail can be moved away automatically.
As shown in fig. 5, in the present embodiment, the extension apparatus further includes:
the buffer frame 29 is arranged on one side of the guide rail 17, and the buffer frame 29 is provided with a limiting notch 30 matched with the core rod 4;
and a third telescopic element 31 for controlling the buffer frame 29 to reciprocate along the direction vertical to the length direction of the guide rail 17.
In actual operation, the third telescopic element 31 extends to drive the buffer storage rack 29 to approach the guide rail 17, the flatting seat 20 rotates 90 degrees, the core rod 4 is horizontally placed on the buffer storage rack 29, then the third telescopic element 31 retracts to drive the buffer storage rack 29 and the core rod 4 on the buffer storage rack 29 to be separated from the guide rail 17 together, namely the auxiliary rod 5 of the core rod 4 is separated from the limiting hole 21.
As shown in fig. 6, in the present embodiment, the flat bed 20 has a circular arc sidewall 32 at the middle-lower portion, and the circular arc sidewall 32 contacts with the guide rail 17. The arc-shaped side wall 32 is in contact with the guide rail 17, so that the guide rail 17 can support the flatting seat 20, and the reliable stress of the whole structure is ensured.
As shown in fig. 6, in the present embodiment, a side of the flatting seat 20 facing the transferring seat 19 has a locking hole, the transferring seat 19 has an electrically controlled retractable element 33 engaged with the locking hole, and a retractable rod of the electrically controlled retractable element 33 is engaged with the corresponding locking hole. Through the cooperation of locking hole and automatically controlled telescopic element 33, can lock the seat of laying down 20, prevent that the seat of laying down 20 from rocking, when the seat of laying down 20 need rotate, the telescopic link of automatically controlled telescopic element 33 contracts, and the seat of laying down 20 can rotate with the seat of rotating relatively this moment. In practical application, the electrically controlled telescopic element 33 may be an electromagnet, an electric push rod, or the like.
As shown in fig. 6, in the present embodiment, the upper surfaces of the two arms 27 of the lift bracket 26 have vertical portions 34, and the vertical portions 34 have contact sensors 35 thereon, and the contact sensors 35 are used to cooperate with the lift handle 11. Position feedback can be provided by the contact sensor 35 to ensure the position of the lift frame 26.
During practical application, each lifting element of this application can be electric putter, cylinder or pneumatic cylinder.
Example 2
The present embodiment differs from embodiment 1 in that the transfer mechanism 18 is different, and in the present embodiment, the transfer mechanism 18 includes:
the transfer seat 19 is arranged on the guide rail 17 in a sliding manner, the transfer seat 19 is provided with a limiting hole 21 for the auxiliary rod 5 to insert, the inner diameter of the limiting hole 21 is smaller than the outer diameter of the lower end of the lifting assembly 6, and the depth of the limiting hole 21 is smaller than or equal to the distance of the auxiliary rod 5 penetrating through the hole 8;
the driving structure is used for driving the transfer seat 19 to reciprocate along the direction of the guide rail 17;
a first lifting element 25, rotatably mounted on the transfer seat 19,
a U-shaped lifting frame 26 fixed to the movable rod of the first lifting element 25, the two arms 27 of the lifting frame 26 being adapted to cooperate with the lifting handle 11, respectively;
and the rotating motor 28 is installed on the transfer base 19 and is matched with the first lifting element 25 through a gear set, so as to drive the first lifting element 25 to rotate.
The working principle of the transfer mechanism 18 is as follows: after the longitudinal extension of the core rod 4 is finished, the driving structure works to drive the transfer mechanism 18 to move to one side of the lower swivel base 3, two arms 27 of the lifting frame 26 are respectively located below the two lifting handles 11, the first lifting element 25 works to drive the lifting frame 26 to move upwards, the lifting frame 26 drives the lifting assembly 6 and the core rod 4 to move upwards together, then the motor 28 is rotated to work, the first lifting element 25 is rotated to drive the lifting assembly 6 and the core rod 4 to rotate to be right above the limiting hole 21, then the first lifting element 25 descends, the auxiliary rod 5 at the lower end of the core rod 4 extends into the limiting hole 21 to be in contact with the bottom of the limiting hole 21, because the inner diameter of the limiting hole 21 is smaller than the outer diameter of the lower end of the lifting assembly 6, and the depth of the limiting hole 21 is smaller than or equal to the distance that the auxiliary rod 5 penetrates out of the through hole 8, at the moment, the lifting assembly 6 does not have an acting force on the core rod 4, and the two split bodies 7 can be opened by opening the locking plate 14, so that a worker can conveniently and take down the lifting assembly 6, and the core rod 4 can be removed along with the transfer base 19 along the guide rail 17.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.
Claims (9)
1. The machining process of the core rod is characterized by comprising the following steps of:
1) Drying the loose core rod bodies with the auxiliary rods at the two ends, and sintering after drying to obtain a coarse core rod;
2) Installing a lifting assembly on the lower rotating seat, enabling the thick core rod to pass through a heating furnace, limiting an auxiliary rod at the upper end of the thick core rod on the upper rotating seat, limiting an auxiliary rod at the lower end of the thick core rod on the lower rotating seat after the auxiliary rod passes through the lifting assembly, heating the thick core rod through the heating furnace, and longitudinally extending the thick core rod through the up-down movement of the upper rotating seat or the lower rotating seat to obtain the core rod;
4) After the extension is finished, the upper rotary seat does not limit the auxiliary rod any more, and the lower rotary seat drives the core rod to move downwards so that the core rod is completely positioned below the heating furnace;
5) The pulling assembly and the core rod are moved out from the lower rotary seat together by lifting the pulling assembly;
the step 2) to the step 5) are implemented by an extension apparatus, and the extension apparatus includes:
the heating furnace is used for heating the coarse core rod;
the upper rotating seat is positioned above the heating furnace and used for limiting an auxiliary rod at the upper end of the core rod and driving the core rod to rotate and move up and down;
the lower swivel base is positioned below the heating furnace and used for limiting an auxiliary rod at the lower end of the core rod and driving the core rod to rotate and move up and down; and
the lifting assembly comprises two split bodies which are in running fit, a through hole and a conical limiting groove positioned on the upper side of the through hole are formed between the two split bodies, an auxiliary rod at the lower end of the mandrel penetrates through the through hole, a conical part at the lower part of the mandrel is in contact with the conical limiting groove, and the two split bodies are also provided with an upwards extending L-shaped lifting handle.
2. The mandrel machining process according to claim 1, wherein one end of each split body is a connecting end, the other end of each split body is an opening and closing end, the connecting ends of the two split bodies are in rotating fit through hinges, the opening and closing ends of the two split bodies are provided with locking structures, and the locking structures comprise:
the locking plate is rotatably arranged on one split body and is provided with a first through hole;
the first magnet is embedded on the locking plate;
the convex column is positioned on the other split body and is used for being matched with the first through hole;
the second magnet is sleeved outside the root part of the convex column and fixed with the split body, and the first magnet and the second magnet are mutually attracted and matched.
3. The mandrel machining process according to claim 2, wherein the split material is nylon.
4. The mandrel machining process according to claim 2, wherein the extension apparatus further comprises a horizontally disposed guide rail and a transfer mechanism movably disposed on the guide rail, the transfer mechanism comprising:
the transfer seat is arranged on the guide rail in a sliding mode and provided with a limiting hole for inserting the auxiliary rod, the inner diameter of the limiting hole is smaller than the outer diameter of the lower end of the lifting assembly, and the depth of the limiting hole is smaller than or equal to the distance of the auxiliary rod penetrating through the hole;
the driving structure is used for driving the transfer seat to reciprocate along the direction of the guide rail;
a first lifting element rotatably mounted on the transfer seat,
the U-shaped lifting frame is fixed on the movable rod of the first lifting element, and two arms of the lifting frame are used for being matched with the lifting handle respectively;
the rotating motor is installed on the transfer seat, matched with the first lifting element through a gear set and used for driving the first lifting element to rotate.
5. The mandrel machining process of claim 2, wherein the extension apparatus further comprises a horizontally disposed guide rail and a transfer mechanism movably disposed on the guide rail, the transfer mechanism comprising:
the transfer seat is arranged on the guide rail in a sliding manner;
the leveling seat is rotatably arranged on the transfer seat and is provided with a limiting hole for inserting the auxiliary rod, the inner diameter of the limiting hole is smaller than the outer diameter of the lower end of the lifting assembly, and the depth of the limiting hole is smaller than or equal to the distance of the auxiliary rod penetrating through the hole;
the vertical plate is fixed on the flatting seat;
the limiting sleeve is arranged at the upper end of the vertical plate in a sliding mode, the limiting sleeve is sleeved on the auxiliary rod at the upper end of the core rod, and the axis of the limiting sleeve is overlapped with the axis of the limiting block;
the second lifting element is arranged at the upper end of the vertical plate and used for driving the limiting sleeve to move in a reciprocating manner;
the driving structure is used for driving the transfer seat to reciprocate along the direction of the guide rail;
a first lifting element rotatably mounted on the transfer seat,
the U-shaped lifting frame is fixed on the movable rod of the first lifting element, and two arms of the lifting frame are used for being matched with the lifting handle respectively;
the rotating motor is arranged on the transfer seat, is matched with the first lifting element through a gear set and is used for driving the first lifting element to rotate;
and the flat-setting motor is used for driving the flat-setting seat to rotate and driving the core rod to change from a vertical state to a horizontal state.
6. The mandrel machining process of claim 5, wherein the extension apparatus further comprises: the buffer storage frame is arranged on one side of the guide rail and is provided with a limiting notch matched with the core rod;
and the third telescopic element is used for controlling the buffer frame to reciprocate along the length direction vertical to the guide rail.
7. The mandrel bar machining process according to claim 5, wherein the flattening seat has a circular arc-shaped side wall at a middle lower portion thereof, and the circular arc-shaped side wall is in contact with the guide rail.
8. The mandrel machining process according to claim 5, wherein the flattening seat has a locking hole on one side facing the transfer seat, the transfer seat has an electrically controlled telescopic element matched with the locking hole, and a telescopic rod of the electrically controlled telescopic element is matched with the corresponding locking hole.
9. The mandrel bar machining process according to claim 4 or 5, wherein the upper surfaces of the two arms of the lifting frame have vertical portions having contact sensors thereon for engaging with a lifting handle.
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