CN1103986A - Method for thermal expansion formation of the caps for sealing cable ends and the equipment - Google Patents

Method for thermal expansion formation of the caps for sealing cable ends and the equipment Download PDF

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Publication number
CN1103986A
CN1103986A CN 93120960 CN93120960A CN1103986A CN 1103986 A CN1103986 A CN 1103986A CN 93120960 CN93120960 CN 93120960 CN 93120960 A CN93120960 A CN 93120960A CN 1103986 A CN1103986 A CN 1103986A
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CN
China
Prior art keywords
workpiece
jumper bar
cooling
punch
fixture block
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Pending
Application number
CN 93120960
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Chinese (zh)
Inventor
伍晃
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CHANGYUAN APPLIED CHEMISTRY Co Ltd SHENZHEN
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CHANGYUAN APPLIED CHEMISTRY Co Ltd SHENZHEN
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Application filed by CHANGYUAN APPLIED CHEMISTRY Co Ltd SHENZHEN filed Critical CHANGYUAN APPLIED CHEMISTRY Co Ltd SHENZHEN
Priority to CN 93120960 priority Critical patent/CN1103986A/en
Publication of CN1103986A publication Critical patent/CN1103986A/en
Pending legal-status Critical Current

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Abstract

It is composed of program controller workpiece preheating box, punch bar, punch heading unit and cooling unit. The procedure comprises: cylinder work piece preheating, sleeving workpiece on positioner of punch head unit, expanding the opening of the workpiece by lateral force of punch bar head under program controller, blow-expanding in mould by compressed air sent from punch bar end when workpiece fall down into cooling unit for external forming, and setting in cooling unit and demoulding.

Description

Method for thermal expansion formation of the caps for sealing cable ends and the equipment
The present invention is a kind of method and device that is used in expansion manufacturing cable sealing cap under the hot state, and it is mechanical to belong to thermoplastic.
Characteristics such as cable and the communication cable of be used to fail, distribution being used require to have good insulation preformance, high pressure resistant, mechanical strength height, will in cable design and manufacturing, be guaranteed in order to reach this purpose, one of them important step is exactly that two ends to the cable of making adds sealing cap, to seal the termination, make it isolated with empty G﹠W fully, cable after construction need be blocked also should add sealing cap, otherwise will reduce the insulation property of cable and withstand voltage, even can not use.For this reason, not only require good elasticity to be convenient to tightly to encase after package cable socket but also the package termination for the sealing cap made from plastic cement and do not allow the place that to leak, certainly more do not allow the crack or occur the crack in use for some time, cause the phenomenon of gas leakage, water inlet.
Because the economic benefit of manufactory's professional production cable sealing cap is not high, therefore the present domestic fairly simple way that still adopts, the sealing cap quality of making is not ideal, promptly use a plastic cement pipe through radial dilatation, make it dwindle bore a termination with the heating way, and pack tightly a special duroplasts head, load onto gas and chew (Fig. 9).This product hermeticity can not get guaranteeing, just might leak, and perhaps uses a period of time slit that will leak air.We met the U.S., and a kind of product (Figure 10) is arranged is to be extruded into tubulose earlier, meshes according to the sealing cap length segmentation then again, cuts into two again after adding thermal enlargement.It also can produce leakage leave slit or use ashamed the splitting in back from new engagement place, and it is in uneven thickness that this sealing cap also exists, the not high shortcoming of compressive resistance and mechanism's intensity.Have in the world and make the termination and do not have seam cable sealing cap, we do not understand its manufacture method and and equipment, but product brings a high price, because the poor quality of homemade cable sealing cap, cable producer requires to produce high-quality cable sealing cap, especially communication in a hurry have to use the jointless sealing cap in expensive import termination for a long time with cable and export enterprise.
Purpose of the present invention is exactly to solve to produce method and the device that the high-quality low-cost termination does not have seam cable sealing cap.
Below in conjunction with accompanying drawing device of the present invention and manufacture method are described in detail.
Fig. 1 is that cable sealing cap shaped device of the present invention is always schemed
Fig. 2 preheating cabinet
Fig. 3 jumper bar
Fig. 4 punch heading unit
Fig. 5 cooling unit
Fig. 6 slide block
Fig. 7 fixture block
Fig. 8 cover of blurting out
The homemade cable sealing cap that Fig. 9 termination is porose
U.S.'s sealing cap that Figure 10 end meshing is sealed
Apparatus of the present invention (Fig. 1) mainly are made up of the main parts such as programme-control case (110), preheating case (111), jumper bar (13), punch heading unit (12) and cooling unit (15).
The programme-control case is the command system of full device, and it commands each parts of full machine by certain program, finish a certain action within a certain period of time. Program control system can command full machine to finish the processing of a minimum gauge sealing cap in descending 28 seconds once of jumper bar among the present invention, finishes the processing of a maximum specification sealing cap 52 seconds. Time precise control degree error was less than 0.01 second. Commander Complete motor-driven work is accurate, reliable, and can according to the workpiece size difference, each operation long processing time weak point be adjusted.
Preheating cabinet (Fig. 2) is to be preheating to the temperature that can expand in the case and to make for cylindrical work pieces that will be to be expanded is placed on, and preheating cabinet is the rectangle chest of having laid to the infrared electric heating pipe (21) of intensification usefulness (23).Tank wall has insulating (22), has a motor transmission system through speed change to drive and the chain (25) of running in the case, and chain drives the montant (24) that can be inserted in the workpiece (26) for the treatment of preheating and rotates.The preheating cabinet size mainly is to guarantee that workpiece is from being set to montant, to taking off from montant, prepare to send into down operation only during this period of time in, can make the workpiece uniform heating, make temperature be raised to 120~130 ℃ and guarantee that workpiece through preheating by production cycle needs, constantly supplies.The present invention allows workpiece 12~22 minutes preheating cabinet heating powers of walking in preheating cabinet be 5KW.
Jumper bar of the present invention (Fig. 3) is a hollow seamless bar (31); its upper end is equipped with and can be controlled the jumper bar stroke; to protect full machine not run into the travel control switch (32) that obstacle damages parts because of jumper bar is descending; the jumper bar top is connected with the flexible pipe of supplying gas (33); the jumper bar lower end is the ram head (34) that tapering is arranged and has dashing of four ventholes (36) and chew (35) that drift of the present invention is an actual internal mold of making sealing cap.Jumper bar is by steel manufacturing drift and dash and to chew then by No. 45 steel and polytetrafluoroethylene manufacturing.
Jumper bar is moving upper and lower moving down along the lifting cornice that slides on the vertical track of column, the nonparallelism coordinate direction of jumper bar center and column is not more than 0.05 millimeter.
Punch heading unit (Fig. 4) is one of core of the present invention, and mainly to form be slide block (47), fixture block (41), blurt out cover (46) and the locating rack of blurting out (410) by four parts for it.Six " worker " font metal slide blocks (Fig. 6) with upper and lower two-layer fan-shaped end face be inserted in one therefrom branch such as the mind-set circumference metal that has six 36~56 mm wide chutes according to sealing cap specification difference blurt out in the cover, such structure arrangement be make slide block can be radially past in the chute that puts of blurting out, return slip, every slide block lower end connects the fixture block (Fig. 7) of " ┌ " shape with screw, six fixture blocks are a complete circle when closing up, and the fixture block bottom is a wedge shape of being convenient to the band circular arc that the workpiece oral area puts.As can be seen from Figure 4; when ram head when the punch heading unit center hole is walked downwards; along with slide block is radially pushed open by ram head; the fixture block band workpiece and is also radially outwards moved together; when ram head moves up when withdrawing from punch heading unit through the punch heading unit centre bore; fixture block lower end wedge-like portion will be owing to the spring in the hole that is contained in the fan-shaped lateral surface of slide block (411) bounce-back (spring when ram head is walked downwards (411) be compressed), along with slide block radially moves and embraces the circle that reverts to tapering to the center of circle.Spring (411) is sealed screw (45) and is enclosed in lateral surface and seals in the circular hole.
Metal blurt out the locating rack bottom near fixture block Duan Youyi be installed in carriage (43) go up by the resistance wire dish become and locating rack between the heating collar (42) of heat insulation, insulation, in order to the baking fixture block, make its temperature reach 80~90 ℃, purpose is when preventing to be preheating to 120~130 ℃ workpiece and putting fixture block, meeting cold fixture block can shrink, hold fixture block tightly, increase the difficulty on making, even defective work piece.
When making sealing cap, to be enclosed within through the workpiece of preheating by the wedge-like portion of six fixture block lower end band circular arcs and form on " cylinder " that tapering is arranged, descending ram head promotes slide block and radially outwards moves and drive fixture block and radially outwards move, thereby enlarged the oral area of the workpiece that is enclosed within the fixture block wedge-like portion, the fixture block of being washed open by ram head no longer is a circle that contiguous circumferential is arranged at this moment, but six sections arcwall faces that inner surface contacts with the jumper bar head, outer surface contacts with work piece inner surface with six arcwall faces, and remaining inner surface of workpiece surrounds jumper bar.
From the course of action of above-mentioned jumper bar and slide block, fixture block, we find out that slide block has played one and moving both vertically of jumper bar become the horizontal movement that drives fixture block in forming process.Slide block all is need be fine lubricated at the horizontal movement and the jumper bar of the cover chute of blurting out by moving both vertically of slide block, fixture block center, otherwise will make the jumper bar can not normal upper and lower motion, influence the production of sealing cap, thereby the present invention there be blurt out cover (46) and the handled oil groove lid (49) of being with oil filler point and putting into oil suction cotton cord (48) above slide block.
Punch heading unit is tightened on the column (19) by the locating rack of blurting out (410), and the nonconcentricity error of punch heading unit and jumper bar is not more than 0,05 millimeter.
Cooling unit of the present invention (Fig. 5) is except having the cooling forming product; Make outside the effect of its typing, or actual external mold in the former of the present invention, because oral area is under the workpiece by the jumper bar headband to be advanced into cooling unit through further machine-shaping of the workpiece of mechanical expansion and typing among the present invention, chews the pore (36) of (35) by jumper bar and send into 4kg/cm 2Compressed air, make size expanding and shaping that workpiece constitutes according to the cast copper external mold (51) in the cooling unit and the oblique mould of brass (510) and cooling and shaping.
The movable door frame (56) that cooling unit of the present invention mainly links to each other with cooling frame (511) by external mold (51), overcoat (52), cooling frame (511) and by hinge arrangement (59) and be placed in oblique mould (510) in the movable door frame, mould at the bottom of (55) and by electromagnet (53) control, play automatic knocker (57) that control activity door frame opens and closes and water inlet (16), water tank compositions such as (17).
The cast copper external mold (51) of tubular mills out many boshes at outer wall among the present invention, and 6~7mm left and right sides vertical current water space is arranged between overcoat and the external mold.
The oblique mould of brass of the present invention (510) is the part of external mold in forming process, and the head of sealing cap is just pressed its shape and size moulding.Just it is installed in the movable door frame (56), can open downwards with movable door frame, so that the moulding sealing cap falls outside the machine of sending thus.Tiltedly the mould side has also milled many axial grooves for increasing radiating surface.
The free gap that 5 millimeter are radially arranged between overcoat of the present invention (52) and cooling frame (511) endoporus, external mold has 1: 10 gradient in 30 millimeter length suitable for reading, this is to enter external mold smoothly for the ease of the ram head with workpiece also can locate automatically, make between external mold and the jumper bar concentric, even to guarantee the product wall thickness.
To connect by external mold, overcoat first half outer mold of forming and the Lower Half outer mold of forming by (55), movable door frame (56) at the bottom of oblique mould (510), the mould by hinge arrangement (59) among the present invention, all be installed on the cooling frame (511), constitute and complete can make workpiece portion within it, by the external mold of blowing compressed air moulding.
The switching of movable door frame (56) is by an arm (54) can control around the bales catch that a fixed axis rotates as electromagnetic core among the present invention.Except that oblique mould is housed, promising increase radiating surface also is installed is flow through cooling fluid in the movable door frame, have (55) and steel door frame (58) at the bottom of the brass pattern of a plurality of concentric grooves and radial slot.
Water inlet is to be placed on movable door frame bottom, is used for cooling fluid and finished product are separated, and derives finished product, the semicircular cylinder that is welded into grate shape by iron.
Cooling unit is to be contained in together on the column (19) by cooling frame, do like this and could guarantee the concentric of external mold and jumper bar, (being the concentric of external mold and internal mold) could guarantee that finished product has uniform wall thickness, and the nonconcentricity of regulation cooling unit and jumper bar is not more than 0.05 millimeter among the present invention.
Cooling fluid leaves in fuselage (Fig. 1) the bottom water tank (17) among the present invention, this is in order to reduce occupation of land, (512) are chewed in the water inlet that cooling fluid is sent into cooling unit with the water pumper of 6 meters lifts, cooling fluid is from external mold and the outer inner room passage and the tank circuit that respectively dispels the heat, through movable door frame, oblique mould, bed die, water inlet, enter water tank.
The workpiece oral area that puts fixture block in punch heading unit is extended, along with the descending workpiece of the continuation of jumper bar is brought into cooling unit by jumper bar, accepts automatic program control system instruction jumper bar and chews send into 4kg/cm from pore 2About compressed air, make workpiece in the moulding of external mold intramedullary expansion, chew (512) from water inlet again immediately and send cooling fluid to, make after the product approval of moulding by external mold cooling, automatic program control system makes electromagnet core (54) effect, and self-acting valve button (57) has been removed, and movable door frame (56) is opened, jumper bar continues descending, sends into 8kg/cm then 2About the air that contracts of suppressing make product stripping, and make jumper bar upwards promote simultaneously, demoulding this moment product falls, and is sent outside the machine through water inlet (17), ram head also returns to original position by the slide block of punch heading unit.Cooling fluid is passed cooling unit, flows into water tank (17) from the bottom, will be kicked up by water pumper again and send into into Shui Zui, and along with the lifting arm band the jumper bar rising, movable door frame is also closed by drive, is lived by the automatically-controlled door padlock.A new formed product is prepared to finish, and forming process will so be gone round and begun again from newly again.
For ease of product stripping, to take into full account the key factors such as wall thickness, compact dimensions and cooling, typing contraction of product with the product size difference in when design.The present invention allows when designing the external mold size and leaves 0.05 millimeter air gap between shaped article and jumper bar.
The present invention has safety guard; the accident of the preventing parts that are damaged; the fault of parts because this device may be damaged; can only be that to occur in the descending process of jumper bar out of hand; for this this device is installed travel control switch (32) at the jumper bar top; in case the descending obstacle that runs into of jumper bar, travel switch just cuts off complete dynamo-electric source, can avoid the generation of accident.Certainly jumper bar and punch heading unit guarantee that enough lubricating also is important, because jumper bar can not in time descendingly remove to expand workpiece or the demoulding all may cause waste product.
The inventor uses the present invention, (120 ℃~130 ℃) are earlier with mechanical expansion workpiece oral area under hot state, blow expansion with compressed air again, press mould molding, cooling and shaping is made the method for sealing cap and is used the equipment of making by invention, 12 actions with a sealing cap of moulding, under cyclelog control, jumper bar is descending once only uses 28 second time, finishes the sealing cap that whole technical processs are made a minimum gauge, or with the sealing cap of making a maximum specification 52 seconds, the sealing cap qualification rate is more than 96%.The present device manufacturing process is simple, does not have special finishing requirements, and selection is general, and compact conformation does not have specific (special) requirements to environment for use yet, and method of operation is easy, the productivity ratio height.The sealing cap termination of using present device and method to produce is seamless, and long-term the use can not produce the crack yet, and product also has advantages such as wall thickness is even, and the cost of product is also well below external like product, and domestic, international member can be accepted.Therefore method and apparatus of the present invention use and promote the quality that not only can improve the cable sealing cap, also can reduce import, save the foreign exchange expenditure, even earn foreign exchange in a large number.

Claims (9)

1, a kind of cable sealing cap thermal enlargement forming method of being made up of program control system and diel and device is characterized in that device is made up of workpiece preheating box (111), jumper bar (13), punch heading unit (12), cooling unit (15) and fault automatic shutdown protection system (11) etc.
2, but a kind of method that makes the tubular plastic workpiece expand into the cable sealing cap under hot state is characterized in that with the temperature (120~130 ℃) that procedure auto-control is preheating to hot-stretch with workpiece to be processed its oral area being inserted in through stratie and is baked to 80~90 ℃, purse up rear center is on the metal fixture block (Fig. 7) of a complete circle, ram head is advanced into the fixture block center under (34), expand fixture block with mechanical thrust, the workpiece oral area is also radially expanded, drift continues descending, jumper bar is chewed (35) workpiece is ejected fixture block, is enclosed within on the ram head fully.After the jumper bar headband workpiece and entered external mold (51), chew the pore (36) of (35) from jumper bar and send 4kg/cm 2Compressed air, make workpiece by external mold inwall size expanding and shaping, send into cooling fluid at the external mold outer wall immediately and make the shaped article cooling and shaping, chew pore from jumper bar and send 8kg/cm again 2Compressed air, make product stripping, send outside the machine through opening dodge gate frame (56).
3, device according to claim 1 is characterized in that preheating cabinet is that inside has the motor transmission system once speed change to drive and the chain (25) and the montant (24) of running, infrared heating element (21) is arranged, the metal box (23) that thermal insulation layer (22) are arranged in the case, the a plurality of montants that turn round with chain can be inserted in the workpiece (26) for the treatment of preheating, the running speed of chain and case internal heat generation element power are complementary, workpiece is turned round in case can reach 120~130 ℃ of temperature in 12~20 minutes after the clock time, guaranteeing needs constantly supply through preheating workpiece to be formed by the production cycle.
4; device according to claim 1 is characterized in that jumper bar (31) is a hollow stem; error protection control switch (32) is equipped with in the upper end; the top links to each other with the flexible pipe of supplying gas (33); resistant to elevated temperatures polytetrafluoroethylmaterial material is housed in the jumper bar lower end and No. 45 steel are made the ram head (34) that the jumper bar that has four ventholes (36) is chewed (35) and tapering is arranged; jumper bar (13) is on being driven along the column vertical track under smooth suitable lifting post (18) drive of sliding by variable ratio drive system; following motion; jumper bar is not more than 0.05 millimeter with the nonparallelism coordinate direction of the column (19) that punch heading unit (12) and cooling unit (15) are installed, the design of external mold should make product that gas expands moulding cooling shrink finalize the design after and leave the demoulding air gap of 0.05 millimeter between ram head.
5, device according to claim 1 is characterized in that punch heading unit (12) is the mind-set circumference metal that evenly is provided with six 36~56 mm wide guide rails cover (46 or Fig. 8) of blurting out therefrom, six fan-shaped end face is arranged and be drilled with in the upper surface outer side edges can inserting spring, the I-shaped metal slide block that seals by screw (45) (47 or Fig. 6), six lower ends are for being with the wedge shape of circular arc, being connected the slide block lower end with screw, is " ┌ " type metal fixture block (41 or Fig. 7) of a complete circle when closing up, the locating rack of blurting out (410) that is connected with the cover of blurting out (46 or Fig. 8), the lower end is connected the top to be had oiling groove to put into oiling cotton cord (48) and two metal oil grooves lids (49) composition of handle is arranged with slide block (47).Near also laying a, insulation heat insulation on the carriage (43) of lower end, fixture block position, toasting the fixture block interior gas ket of making by resistance wire (42) with the locating rack of blurting out.
6, device according to claim 1 is characterized in that punch heading unit is to be tightened on the column by the locating rack of blurting out, and punch heading unit and jumper bar center distance tolerance are not more than 0.05 millimeter.
7, device according to claim 1 is characterized in that cooling unit is chewed (55) at the bottom of the oblique mould (510), mould of (512), cast copper external mold (51), carbon steel overcoat (52), brass, metal supporting plate (58) and cooling unit is installed in cast iron cooling frame (511) on the column etc. by water inlet and forms, external mold is suitable for reading have 1: 10 gradient, overcoat, and the cooling frame internal diameter between leave 5 mm clearance (513).
8, at the bottom of device according to claim 1 is characterized in that oblique mould outer wall, mould, support bracket all is to make to have a plurality of tank circuits and increase contact-making surface with cooling fluid, San Re structure as early as possible, they are installed in by electromagnet (53) control and open and close, and are installed in the movable door frame (56) on the cooling frame with hinge (59).
9, device according to claim 1 is characterized in that being equipped with to preventing that the descending obstacle that runs into of jumper bar from damaging parts, can cut off the travel control switch (32) in complete dynamo-electric source automatically on the jumper bar.
CN 93120960 1993-12-13 1993-12-13 Method for thermal expansion formation of the caps for sealing cable ends and the equipment Pending CN1103986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 93120960 CN1103986A (en) 1993-12-13 1993-12-13 Method for thermal expansion formation of the caps for sealing cable ends and the equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 93120960 CN1103986A (en) 1993-12-13 1993-12-13 Method for thermal expansion formation of the caps for sealing cable ends and the equipment

Publications (1)

Publication Number Publication Date
CN1103986A true CN1103986A (en) 1995-06-21

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CN 93120960 Pending CN1103986A (en) 1993-12-13 1993-12-13 Method for thermal expansion formation of the caps for sealing cable ends and the equipment

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CN (1) CN1103986A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102066069A (en) * 2008-06-19 2011-05-18 本田技研工业株式会社 Industrial product production facility and production method
CN103231509A (en) * 2012-12-31 2013-08-07 深圳市宏商材料科技股份有限公司 Sealing-cap multi-mold expansion machine
CN106129911A (en) * 2016-07-16 2016-11-16 王才丰 The installation tool of a kind of shrinkage cable sealing cap and mounting process
CN106626348A (en) * 2016-11-30 2017-05-10 重庆市成吉思机械制造有限公司 Multi-mode automatic sealing cap control expansion machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102066069A (en) * 2008-06-19 2011-05-18 本田技研工业株式会社 Industrial product production facility and production method
CN102066069B (en) * 2008-06-19 2014-03-05 本田技研工业株式会社 Industrial product production facility and production method
CN103231509A (en) * 2012-12-31 2013-08-07 深圳市宏商材料科技股份有限公司 Sealing-cap multi-mold expansion machine
CN106129911A (en) * 2016-07-16 2016-11-16 王才丰 The installation tool of a kind of shrinkage cable sealing cap and mounting process
CN106626348A (en) * 2016-11-30 2017-05-10 重庆市成吉思机械制造有限公司 Multi-mode automatic sealing cap control expansion machine

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