Necking machine for copper pipe
Technical field
The present invention relates to does not have the Machining Technology field that disappears, particularly a kind of necking machine for copper pipe that can make the copper pipe reducing of cutting.
Background technology
In existing industrial products and daily product, the pipe of different tube diameters links to each other to be both and often runs into, generally can adopt joint to connect, and the joint connection can bring leakage problem, is not allow to leak generation in a lot of occasions, can only adopt and in the middle of the pipe of different-diameter, increase conical pipe, two ends utilize welding manner that the pipe of different tube diameters is welded as a whole then, and this will increase operation, bring inconvenience to production, for large batch of production, increased cost especially.
Summary of the invention
The purpose of this invention is to provide the necking machine for copper pipe that can make copper pipe mouth of pipe reducing a kind of simple in structure, easy to operate.
For addressing the above problem, the technical solution used in the present invention is a kind of necking machine for copper pipe, comprise workbench, hydraulic jack, hand-operated direction valve, locking fixture, supporting base and control cabinet, the work of control cabinet control hydraulic jack, hand-operated direction valve can be controlled the direction of motion of piston in the hydraulic jack, hydraulic jack, hand-operated direction valve, locking fixture, supporting base and control cabinet are installed on the workbench, and the center line of locking fixture is consistent with the center line of hydraulic jack, hydraulic jack has the axle that stretches out the oil cylinder outer end, the load that is slidingly matched of the endoporus of described axle and supporting base, its innovative point is:
A, also comprise the reducing mould, reducing mould and the axle load of stretching out the hydraulic jack outer end, the reducing mould, comprise cover in the mould, die coat and connector, the inner inner hole thread with the axle that stretches out the hydraulic jack outer end of described connector is connected, the periphery wall of cover has boss in the described mould, cover puts in the endoporus of connector in the mould, a face of its boss is mutually low with the outer face of connector, described die coat has inner bore of step, its aperture section is sleeved on the periphery wall of cover in the mould, and another face of cover boss offsets in step plane and the mould, and the macropore section of described die coat is that screwed hole is threaded with the connector outer end.
The interior outer end of hole of cover is to its place, outer face in b, the described mould, and it is big that aperture becomes from inside to outside gradually, and aperture variation place smooth transition.
C, described locking fixture comprises the base that is connected with stationary table, support, following fixture block, last fixture block leading screw and handle, support, following fixture block is all fixedlyed connected with base, described support comprises the slide rail of crossbeam and vertical direction, leading screw is fixedlyed connected with handle, and pass screw that crossbeam is provided with and be positioned at fixture block top down, the last plane of the last fixture block between two vertical direction slide rails offsets, the slide rail of last fixture block and two vertical directions is slidingly matched, the slide rail of last fixture block and two vertical directions is slidingly matched, described going up between fixture block and the following fixture block is provided with spring, and handle is fixedlyed connected with leading screw.The place, last plane of described down fixture block is provided with the low groove of institute's rotation copper pipe, and described lower plane place of going up fixture block is provided with the upper groove of rotatable copper pipe, and goes up fixture block and following fixture block to fashionable, and its upper groove is corresponding with low groove.
The interior outer end of hole of cover is located to its outer end in the mould of described reducing mould, and the inner hole wall aperture becomes gradually from inside to outside and is circular arc greatly.
The upper groove of the copper pipe placed that described upward fixture block is provided with is the semicircular arc groove, or Y shape groove.
Described lower plane place of going up fixture block is fixedly connected with two springs, and the place, last plane of described fixture block down is provided with can be respectively and corresponding two shrinkage pools of described two springs, and two springs insert respectively in two shrinkage pools.
The place, last plane of described fixture block down is provided with guide finger, and described lower plane place of going up fixture block is provided with and the corresponding pilot hole of guide finger.
After adopting technical scheme of the present invention, at first the copper pipe dress is pierced in the locking fixture,, under the effect of spring, can guarantee to lock chucking power and can clamp copper pipe, can not make the copper pipe distortion again owing to be provided with spring between the upper and lower fixture block.When the end face of copper pipe during near the reducing mould that is positioned on the axle that stretches out the hydraulic cylinder outer end, the leading screw that utilizes handle to rotate to be connected with it be against fixture block above, it is moved down, last, following fixture block is in the resultant motion, can be rightly with the copper pipe clamping, to go up simultaneously, the spring compression that is provided with between the following fixture block, utilize the direction of motion of hand-operated direction valve control hydraulic cylinder piston rod this moment, make and be installed in the reducing mould that hydraulic cylinder stretches out axle head and move to the copper pipe direction, section is to its place, outer face under hydraulic action because outside the interior cover endoporus in the reducing mould, aperture is expansion gradually from inside to outside, and the uniform and smooth transition of varying aperture part, therefore, during copper pipe is easy to put in and overlaps in the reducing mould, the copper pipe caliber is diminished with the variation compression in the aperture of overlapping in the reducing mould, reach the purpose of reducing, as long as moved hand-operated direction valve by the copper pipe of reducing and move in the other direction when taking out, the interior cover of mould of reducing mould is drawn back, promptly with by the copper pipe of reducing separate, this moment is at the handle of rotational lock anchor clamps, the leading screw that is connected with handle is moved upward, at this moment going up fixture block pops up under the effect of spring, spacing two vertical direction slide rails along support that last fixture block is subjected to guide finger move upward, and just can take out by the copper pipe of reducing.Certainly the copper pipe vary in diameter is very big if desired, can adopt the way of repeatedly reducing, since in the reducing mould in the mould cover be in the connector that is sleeved in the endoporus of the projecting shaft that puts in hydraulic cylinder, utilizing die coat to be threaded with connector again is connected as a single entity the projecting shaft of cover in the mould with hydraulic cylinder, as long as screw off die coat, just easily overlap in the mold removal.Therefore, we can be according to the variation of required caliber, make the interior cover of mould in different endoporus aperture, with the method for overlapping in the mold exchange more, several times copper pipe is carried out reducing, just can satisfy our needs, necking machine for copper pipe of the present invention, technology are simple, easy to operate, as to be particularly suitable for producing in batches needs.
Description of drawings
Fig. 1 is the structural representation of necking machine for copper pipe of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the structural representation of locking fixture among Fig. 1;
Fig. 4 is an I portion enlarged drawing among Fig. 1.
The specific embodiment
The embodiment that provides below in conjunction with accompanying drawing describes in further detail the present invention.
Referring to Fig. 1,2,3,4, a kind of necking machine for copper pipe, comprise workbench 5, hydraulic jack 2, hand-operated direction valve 3, locking fixture 4, supporting base 7 and control cabinet 1,2 work of control cabinet 1 control hydraulic jack, hand-operated direction valve 3 can be controlled the direction of motion of piston in the hydraulic jack 2, hydraulic jack 2, hand-operated direction valve 3, locking fixture 4, supporting base 7 and control cabinet 1 are installed on the workbench 5, and the center line of locking fixture 4 is consistent with the center line of hydraulic jack 2, hydraulic jack 2 has the axle 2-1 that stretches out the oil cylinder outer end, the load that is slidingly matched of the endoporus of axle 2-1 and supporting base 7, also comprise reducing mould 6, reducing mould 6 and the axle 2-1 load of stretching out hydraulic jack 2 outer ends, reducing mould 6, comprise cover 6-1 in the mould, die coat 6-2 and connector 6-3, the inner inner hole thread with the axle 2-1 that stretches out hydraulic jack 2 outer ends of described connector 6-3 is connected, the periphery wall of cover 6-1 has boss 6-1-1 in the described mould, cover 6-1 puts in the endoporus of connector 6-3 in the mould, the face of its boss 6-1-1 is mutually low with the outer face of connector 6-3, described die coat 6-2 has inner bore of step, its aperture section is sleeved on the periphery wall of cover 6-1 in the mould, another face of cover 6-1 boss offsets in step plane and the mould, and the macropore section of described die coat 6-2 is that screwed hole is threaded with connector 6-3 outer end.The endoporus 6-1-1 outer end of cover 6-1 is to its place, outer face in the described mould, and it is big that aperture becomes from inside to outside gradually, and the aperture change section is produced smooth transition.
Referring to Fig. 1,3, described locking fixture 4 comprises the base 4-1 of fixedlying connected with workbench 5, support 4-2, following fixture block 4-3, last fixture block 4-4 leading screw 4-5 and handle 4-6, support 4-2, following fixture block 4-3 is all fixedlyed connected with base 4-1, described support 4-2 comprises the slide rail 4-2-2 of crossbeam 4-2-1 and vertical direction, leading screw 4-5 is fixedlyed connected with handle 4-6 and is passed the screw that crossbeam 4-2-1 is provided with, with be positioned at down fixture block 4-3 top, the last plane of last fixture block 4-4 between two vertical direction slide rail 4-2-2 offsets, the slide rail 4-2-4 of last fixture block 4-4 and two vertical directions is slidingly matched, and the slide rail 4-2-4 of last fixture block 4-4 and two vertical directions is slidingly matched; In order to guarantee that locking chucking power can clamp copper pipe, can not make the copper pipe distortion again, described going up between fixture block 4-4 and the following fixture block 4-3 is provided with spring 4-7; Handle 4-6 is fixedlyed connected with leading screw 4-5.The place, last plane of described fixture block 4-3 down is provided with the low groove 4-3-1 of institute's rotation copper pipe, described lower plane place of going up fixture block 4-4 is provided with the upper groove 4-4-1 of rotatable copper pipe, and last fixture block 4-4 and following fixture block 4-3 are to fashionable, and its upper groove 4-4-1 is corresponding with low groove 4-3-1.
Referring to Fig. 1,3, because the reducing mould is by connector 6-3 and the axle load of stretching out the hydraulic jack outer end, can promote the reducing mould behind the primer fluid compressing cylinder moves, overlap to have in the mould and become big aperture from inside to outside gradually, its reduced diameter portion rounding off, therefore the reducing mould is enclosed within on the copper pipe easily, and even stressed moulding.In order to make copper pipe necking reducer place attractive in appearance, smooth, endoporus 6-1-1 outer end to its outer end of cover 6-1 in the mould of described reducing mould 6 and locating, inner hole wall aperture become gradually from inside to outside and are circular arc greatly.
Referring to Fig. 1,4, copper pipe can be pinned in order to make copper pipe locking fixture in the reducing operation, and guarantee that copper pipe is indeformable, the upper groove 4-4-1 of the copper pipe placed that described upward fixture block 4-4 is provided with is the semicircular arc groove, or Y shape groove.The low groove 4-3-1 of the copper pipe placed that described fixture block 4-3 down is provided with is semicircular arc groove or Y shape groove.Described lower plane place of going up fixture block 4-4 is fixedly connected with two spring 4-7, and the place, last plane of described fixture block 4-3 down is provided with can be respectively and corresponding two the shrinkage pool 4-3-2 of described two spring 4-7, and two spring 4-7 insert respectively among two shrinkage pool 4-3-2.
Referring to Fig. 4, move up and down steadily in order to make fixture block 4-4, the place, last plane of described fixture block 4-3 down is provided with guide finger 4-3-3, and described lower plane place of going up fixture block 4-4 is provided with the corresponding pilot hole 4-4-2 with guide finger 4-3-3.
Referring to Fig. 1,2,3,4, necking machine for copper pipe of the present invention in use, at first, be packed in reducing mould 6 in the endoporus of the axle 2-1 that stretches out hydraulic cylinder 2 outer ends by connector 6-3, passed locking fixture 4 by the copper pipe of reducing, direct reach the outer face of reducing mould 6, the handle 4-6 of rotational lock anchor clamps, between upper groove 4-4-1 that fixture block 4-4 is moved down copper pipe is locked at last fixture block 4-4 and the low groove 4-3-1 of following fixture block 4-3, if the copper pipe by reducing is longer, can increase support 8 in the copper pipe outer end copper pipe is held up, upwarp to prevent the copper pipe working end; At this moment the primer fluid compressing cylinder 2, move hand-operated direction valve 3, the reducing mould 6 that is installed on the hydraulic jack 2 is moved to the copper pipe direction, copper pipe is enclosed within the mould of reducing mould 6 among the cover 6-1, the diameter extruding of copper pipe is become the identical diameter in aperture that overlaps 6-1 in the mould, and this just finishes the operation of a copper pipe diameter reduction; Moving hand-operated direction valve 3 then moves in the other direction, the interior cover of the mould 6-1 of reducing mould 6 is drawn back, promptly with by the copper pipe of reducing separate, this moment is at the handle 4-6 of rotational lock anchor clamps, the leading screw 4-5 that is connected with handle 4-6 is moved upward, at this moment go up fixture block 4-4 and pop up under the effect of spring 4-7, spacing two vertical direction slide rail 4-2-2 along support 4-2 that last fixture block 4-4 is subjected to guide finger 4-3-3 move upward, and just can take out by the copper pipe of reducing.Because reducing mould 6 comprises cover 6-1, die coat 6-2 and connector 6-3 in the mould, die coat 6-2 be threaded with adapter sleeve 6-3 in the axle 2-1 endoporus that is installed in depths hydraulic jack 2 and will be in the mould the fixing parts of cover 6-1, can be general.And the aperture of cover 6-1 makes according to product needed in the mould, when the caliber of copper pipe need alter a great deal, we can carry out repeatedly reducing and promptly design mode gradation that cover 6-1 in a plurality of moulds utilizes cover 6-1 in the mold exchange more copper pipe is carried out reducing and reaches the demand of product gradually, therefore, necking machine for copper pipe of the present invention, simple in structure, easy to operate, be particularly suitable for requirements of large-scale production.