CN109108171A - Multi-point tube expander - Google Patents
Multi-point tube expander Download PDFInfo
- Publication number
- CN109108171A CN109108171A CN201810999759.3A CN201810999759A CN109108171A CN 109108171 A CN109108171 A CN 109108171A CN 201810999759 A CN201810999759 A CN 201810999759A CN 109108171 A CN109108171 A CN 109108171A
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- China
- Prior art keywords
- expander
- pawl
- valve bar
- several
- spring
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
- B21D41/021—Enlarging by means of tube-flaring hand tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
- B21D41/026—Enlarging by means of mandrels
- B21D41/028—Enlarging by means of mandrels expandable mandrels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a kind of multi-point tube expanders, include: the shell of a pair of opposing；One driving worm screw；One handle；One driving worm gear；One drive shaft；One expander component, the expander component is rotatably arranged in the head of the drive shaft, the expander component includes the expander valve bar of a pair of opposing, several reset spring coils, the spring seat slice of a pair of of arc and a pawl assembly, the pawl assembly includes a pawl ring support, several reduction torsion springs and several expansion pawls, wherein, the expander valve bar is between one first operating position and one second operating position, when the expander valve bar is in the first operating position, a pair of of expander valve bar closes up into a cylinder, when the expander valve bar is in the second operating position, a pair of of expander valve bar separates outward and squeezes the inner wall of copper pipe simultaneously.The tube expander operates conveniently, and no dependence electric power is suitble to the expander operation of the copper pipe of a variety of calibers.
Description
The application is application No. is 201711124756.7, and invention and created name is multi-point tube expander, the applying date is
The divisional application of the application for a patent for invention on November 14th, 2017.
Technical field
The present invention relates to a kind of tools, more precisely, being a kind of tube expander.
Background technique
In refrigerating field, it is often necessary to carry out expander to the interface of copper pipe, existing method generally uses dedicated multiple
Mold carries out expander, and operation is inconvenient.
Summary of the invention
The present invention mainly solves technical problem present in the prior art, to provide a kind of tube expander.
Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals:
The invention discloses a kind of multi-point tube expanders, which is characterized in that the multi-point tube expander includes:
The shell of a pair of opposing；
One driving worm screw；
One handle, the handle are removably disposed in the tail portion of the driving worm screw；
One driving worm gear, the driving worm gear are matched with the driving worm screw；
One drive shaft, the drive shaft run through the driving worm gear, and the head of the drive shaft is equipped with
The outer wall circumferential direction of one columned second connection cylinder, the top of the second connection cylinder is protruded equipped with several drivings；
One expander component, the expander component are rotatably arranged in the head of the drive shaft, the expansion
Tube assembly runs through one second spring bearing, and the expander component includes the expander valve bar, several return springs of a pair of opposing
The head of the spring seat slice and a pawl assembly of circle, a pair of of arc, the expander valve bar is equipped with a ladder tringle, the expansion
The tail portion of pipe valve bar is equipped with the rotating cylinder of a semi-circular cylindrical, and the outer wall of the expander valve bar is equipped with the upper bullet of several arcs
Spring locating slot, the inner wall of the spring seat slice are equipped with the lower spring positioning slot of several arcs, the reset spring coil difference
It is arranged between the upper spring locating slot and lower spring positioning slot；
The pawl assembly includes a pawl ring support, several reduction torsion springs and several expansion pawls, the pawl circle
Ring support main body of the seat comprising an annular, be evenly provided in the inner wall circumferential direction of the ring support main body several pawl rotation circular grooves and
The fixed circular groove of several torsional springs is respectively equipped with one between adjacent pawl rotation circular groove and the fixed circular groove of torsional spring and supplies the extension spine
The movable activity space of pawl, the spring body of the reduction torsion spring are arranged in the fixed circular groove of the torsional spring, the extension spine
Pawl includes a pawl main shaft, and one end of the pawl main shaft is equipped with the first driving convex block of a wedge shape, the pawl main shaft
The other end be equipped with a discoid second driving convex block, the end of the first driving convex block is equipped with a columned convex block
Rotation axis, the convex block rotation axis are rotatably arranged in the pawl rotation circular groove, the first driving convex block
Outer wall on be respectively equipped with a torsional spring card slot；
Wherein, the expander valve bar is between one first operating position and one second operating position, when the expansion
When pipe valve bar is in the first operating position, a pair of of expander valve bar closes up into a cylinder, when the expander valve bar is in
When the second operating position, a pair of of expander valve bar separates outward and squeezes the inner wall of copper pipe simultaneously.
As preferred embodiments of the present invention, the expander valve bar has magnetism.
Invention additionally discloses a kind of multi-point tube expander, the multi-point tube expander includes:
The center of the shell of a pair of opposing, the shell is equipped with a fixed shaft hole, the week of the fixed shaft hole
It is equipped with several first connected circular holes upwards, is respectively equipped with a semicircular mouth of connecting trough, institute on the front-rear side walls of the shell
The circumferential direction for the mouth of connecting trough stated is equipped with several second connected circular holes, is respectively equipped with a ring on the outside of first connected circular hole
The circumferential direction of first connection the ring disk of shape, the first connection the ring disk is equipped with several first the ring disk circular holes, first ring
Disk circular hole passes through one first attachment screw with first connected circular hole respectively and is connected, the outside point of the mouth of connecting trough
Not She You an annular the second connection the ring disk, the circumferential direction of the described second connection the ring disk is equipped with several second the ring disk circular holes, institute
The the second the ring disk circular hole stated passes through one second attachment screw with second connected circular hole respectively and is connected；
One driving worm screw, the driving worm screw are rotatably arranged between the mouth of connecting trough, the driving
Worm screw includes a worm shaft and a worm gear denticle, and the both ends of the worm shaft are respectively equipped with a worm bearing, the worm screw
Bearing is separately positioned between the mouth of connecting trough；
One handle, the handle are removably disposed in the tail portion of the worm shaft；
One driving worm gear, the driving worm gear be arranged between the fixed shaft hole and with the worm gear denticle phase
Cooperation, the center of the driving worm gear are equipped with a worm gear axis hole, and the inner wall of the worm gear axis hole is equipped with a locking notch；
One drive shaft, the drive shaft run through the worm gear axis hole, and the drive shaft includes a cylinder
The side wall of the shaft main body of shape, the shaft main body is equipped with a locking horizontal stripe, the locking horizontal stripe and the locking
Notch matches, and the tail portion of the shaft main body is equipped with a columned first connection cylinder, the head of the shaft main body
Portion is equipped with a columned second connection cylinder, and the outer wall circumferential direction at the top of the second connection cylinder is equipped with several drivings
Prominent, the first connection cylinder runs through one first spring bearing；
One expander component, the expander component are rotatably arranged in the head of the drive shaft, the expansion
Tube assembly runs through one second spring bearing, and the expander component includes the expander valve bar, several return springs of a pair of opposing
The head of the spring seat slice and a pawl assembly of circle, a pair of of arc, the expander valve bar is equipped with a ladder tringle, the expansion
The tail portion of pipe valve bar is equipped with the rotating cylinder of a semi-circular cylindrical, and the outer wall of the expander valve bar is equipped with the upper bullet of several arcs
Spring locating slot, the inner wall of the spring seat slice are equipped with the lower spring positioning slot of several arcs, the reset spring coil difference
It is arranged between the upper spring locating slot and lower spring positioning slot；
The pawl assembly includes a pawl ring support, several reduction torsion springs and several expansion pawls, the pawl circle
Ring support main body of the seat comprising an annular, be evenly provided in the inner wall circumferential direction of the ring support main body several pawl rotation circular grooves and
The fixed circular groove of several torsional springs is respectively equipped with one between adjacent pawl rotation circular groove and the fixed circular groove of torsional spring and supplies the extension spine
The movable activity space of pawl, the spring body of the reduction torsion spring are arranged in the fixed circular groove of the torsional spring, the extension spine
Pawl includes a pawl main shaft, and one end of the pawl main shaft is equipped with the first driving convex block of a wedge shape, the pawl main shaft
The other end be equipped with a discoid second driving convex block, the end of the first driving convex block is equipped with a columned convex block
Rotation axis, the convex block rotation axis are rotatably arranged in the pawl rotation circular groove, the first driving convex block
Outer wall on be respectively equipped with a torsional spring card slot；
Wherein, the expander valve bar is between one first operating position and one second operating position, when the expansion
When pipe valve bar is in the first operating position, a pair of of expander valve bar closes up into a cylinder, when the expander valve bar is in
When the second operating position, a pair of of expander valve bar separates outward and squeezes the inner wall of copper pipe simultaneously.
As preferred embodiments of the present invention, the expander valve bar has magnetism.
The invention also discloses a kind of pawl assembly for tube expander, comprising a pawl ring support, several reduction torsion springs and
Several expansion pawls, the pawl ring support include the ring support main body of an annular, and the inner wall of the ring support main body is circumferentially upper equal
Be equipped with the fixed circular groove of several pawl rotation circular grooves and several torsional springs evenly, adjacent pawl rotation circular groove and the fixed circular groove of torsional spring it
Between be respectively equipped with one and supply the movable activity space of expansion pawl, the torsion is arranged in the spring body of the reduction torsion spring
In the fixed circular groove of spring, the expansion pawl includes a pawl main shaft, and one end of the pawl main shaft is equipped with the of a wedge shape
One driving convex block, the other end of the pawl main shaft are equipped with a second discoid driving convex block, and first driving is convex
The end of block is equipped with a columned convex block rotation axis, and the convex block rotation axis is rotatably arranged in the pawl rotation
In circular groove, it is respectively equipped with a torsional spring card slot on the outer wall of the first driving convex block, the reduction torsion spring is oppressed described
Expansion pawl, and make the expansion pawl that there is the trend towards the pivot of the pawl ring support.
Tube expander of the invention has the advantage that the tube expander operates conveniently, and no dependence electric power is suitble to a variety of calibers
The expander operation of copper pipe is also suitble to the expander operation of other flexible metal conduits.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the schematic perspective view of tube expander of the invention；
Fig. 2 is the stereochemical structure decomposing schematic representation of the tube expander in Fig. 1；
Fig. 3 is the detail enlarged diagram of the a-quadrant of the tube expander in Fig. 2；
Fig. 4 is the further stereochemical structure decomposing schematic representation of the tube expander in Fig. 2；
Fig. 5 is the further stereochemical structure decomposing schematic representation of the tube expander in Fig. 4；
Fig. 6 is the detail enlarged diagram of the B area in Fig. 5；
Fig. 7 is the stereochemical structure decomposing schematic representation of the expander component of the tube expander in Fig. 5；
Fig. 8 is the detail enlarged diagram in the region C in Fig. 7；
Fig. 9 is the operation chart of tube expander of the invention, part-structure is only shown, at this point, the drive of drive shaft
It is dynamic prominent on neutral position；
Figure 10 is cross-sectional view of the tube expander in Fig. 9 along line D-D；
Figure 11 is the detail enlarged diagram in the region E in Figure 10；
Figure 12 is the operation chart of tube expander of the invention, part-structure is only shown, at this point, the drive of drive shaft
Dynamic prominent dieback slides into inclined-plane；
Figure 13 is cross-sectional view of the tube expander in Figure 12 along F-F line；
Figure 14 is the detail enlarged diagram in the region G in Figure 13；
Figure 15 is the operation chart of second of embodiment of tube expander of the invention, only shows part-structure,
Start to head into slide-in inclined-plane and progressive cambered surface at this point, the driving of drive shaft is prominent；
Figure 16 is cross-sectional view of the tube expander in Figure 15 along H-H line；
Figure 17 is the detail enlarged diagram in the region I in Figure 16；
Figure 18 is the schematic perspective view of the expander valve bar of the tube expander in Figure 15；
Figure 19 is cross-sectional view of the expander valve bar in Figure 18 along J-J line；
Figure 20 is the schematic perspective view of the expander valve bar in the third embodiment of tube expander of the invention；
Figure 21 is the detail enlarged diagram in the region K in Figure 20；
Figure 22 is the schematic perspective view of the expander valve bar in the 4th kind of embodiment of tube expander of the invention；
Figure 23 is cross-sectional view of the expander valve bar in Figure 22 along L-L line；
Figure 24 is the 5th kind of embodiment of tube expander of the invention, only shows part-structure at this time；
Figure 25 is cross-sectional view of the tube expander in Figure 24 along M-M line；
Figure 26 is the detail enlarged diagram of the n-quadrant in Figure 25；
Figure 27 is the stereochemical structure decomposing schematic representation of the tube expander in Figure 24；
Figure 28 is the detail enlarged diagram in the region P in Figure 27；
Figure 29 is the schematic perspective view of the pawl assembly of the tube expander in Figure 27；
Figure 30 is the schematic perspective view of the pawl assembly of the tube expander in Figure 27, is at this time another visual angle；
Figure 31 is the stereochemical structure decomposing schematic representation of the pawl assembly in Figure 30；
Figure 32 is the detail enlarged diagram in the region Q in Figure 31；
Figure 33 is the schematic perspective view of the pawl ring support of the pawl assembly in Figure 31；
Figure 34 is the schematic perspective view of the expansion pawl of the pawl assembly in Figure 31.
Specific embodiment
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
As shown in Figures 1 to 8, which includes the shell 2 of a pair of opposing, and it is solid that the center of the shell 2 is equipped with one
Dead axle hole 21, the circumferential direction of the fixed shaft hole 21 are equipped with several first connected circular holes 22, set respectively on the front-rear side walls of the shell 2
There is a semicircular mouth of connecting trough 23, the circumferential direction of the mouth of connecting trough 23 is equipped with several second connected circular holes 24, first connection
The outside of circular hole 22 is respectively equipped with the first connection the ring disk 3 of an annular, and the circumferential direction of the first connection the ring disk 3 is equipped with several first
The ring disk circular hole 31, the first the ring disk circular hole 31 are connected by one first attachment screw 4 respectively with first connected circular hole 22, should
The outside of mouth of connecting trough 23 is respectively equipped with the second connection the ring disk 5 of an annular, if the circumferential direction of the second connection the ring disk 5 is equipped with
Dry second the ring disk circular hole 51, the second the ring disk circular hole 51 pass through one second attachment screw, 6 phase with second connected circular hole 24 respectively
Connection.
A driving worm screw 8 is equipped between the mouth of connecting trough 23, which is rotatably arranged in the mouth of connecting trough
Between 23, which includes that a worm shaft 81 and a worm gear denticle 82, the both ends of the worm shaft 81 are respectively equipped with a snail
Rod bearing 9, the worm bearing 9 are separately positioned between corresponding mouth of connecting trough 23.
The worm shaft 81 rear removable be provided with one handle 7, be used for rotate driving worm shaft 81.
A driving worm gear 10 is equipped between fixed shaft hole 21, which matches with worm gear denticle 82, the drive
The center of dynamic worm gear 10 is equipped with a worm gear axis hole 101, and the inner wall of the worm gear axis hole 101 is equipped with a locking notch 102.
A drive shaft 11 is equipped in worm gear axis hole 101, which runs through the worm gear axis hole 101, the driving
Shaft 11 includes a columned shaft main body 111, and the side wall of the shaft main body 111 is equipped with a locking horizontal stripe 1111, the lock
Only horizontal stripe 1111 is matched with the locking notch 102.The tail portion of the shaft main body 111 is equipped with a columned first connection cylinder
112, the head of the shaft main body 111 is equipped with a columned second connection cylinder 113, the top of the second connection cylinder 113
Equipped with a discoid driving disk 114, the side wall of the driving disk 114 is equipped with a driving prominent 115, first connecting column
Body 112 runs through one first spring bearing 14.
An expander component S is equipped on the head of drive shaft 11.The expander component S runs through one second spring bearing 13, should
Expander component S includes the spring seat slice 15 of the expander valve bar 12 of a pair of opposing, several reseting leafs 16 and an arc.The expansion
The head of pipe valve bar 12 is equipped with a ladder tringle 121, and the tail portion of the expander valve bar 12 is equipped with the rotating cylinder of a semi-circular cylindrical
122 and one annular limited location snap ring 123, the both sides of the edge of the rotating cylinder 122 are respectively equipped with a reset notch 124 and one sliding
Enter inclined-plane 125, the outer wall of the expander valve bar 12 is equipped with the upper spring locating slot 120 of several arcs, the spring seat slice 15 it is interior
Wall is equipped with the lower spring positioning slot 151 of several arcs, which is separately positioned on the upper spring locating slot 120 under
Between spring positioning slot 151.
Wherein, which is between one first operating position and one second operating position, when the expander valve bar
12 be in the first operating position when, which closes up into a cylinder, when the expander valve bar 12 be in second work
When position, which separates outward and squeezes the inner wall of copper pipe simultaneously.The expander valve bar 12 has magnetism, can be with
It effectively prevent the shaking of expander valve bar 12.Hereinafter can the working method of expander valve bar 12 continue to be illustrated.
The working method of the tube expander is illustrated below.
As shown in Figures 9 to 11, handle 7 not yet rotates, and the driving prominent 115 of drive shaft 11 is located on neutral position,
It is slid into the gap between inclined-plane 125 at this point, driving prominent 115 is prominent a pair of.Due to driving disk 114 radius be equal to or
It is slightly less than the radius of the radian of the inner wall of rotating cylinder 122, then, expander valve bar 12 closes up into one under the action of reseting leaf 16
Cylinder or approximate cylinder.
As shown in Figure 12 to Figure 14, the copper pipe for needing expander is inserted into the corresponding rank on ladder tringle 121 by user
On terraced slot, and rotational handle 7.The rotate driving of handle 7 drives worm screw 8, meanwhile, driving worm screw 8 drives driving worm gear 10, driving
Worm gear 10 then drives drive shaft 11 to rotate synchronously.Then, it is oblique to start the slide-in squeezed in its rotation direction for driving prominent 115
Face 125, until driving prominent 115 is by 125 dieback of slide-in inclined-plane, at this point, the driving prominent 115 is in dieback position.At this point,
The outside separated in synchronization of a pair of of expander valve bar 12 and the inner wall for squeezing copper pipe simultaneously, meanwhile, this is to expander valve bar 12 as driving turns
Axis 11 rotates synchronously, and quickly completes the expander operation of copper pipe joint.After completing expander, handle 7 is rotated backward, is driven
Prominent 115, which come back to neutral position, sprinkles, and closes up into a cylinder or approximate cylinder again under the action of reseting leaf 16.
It should be pointed out that during driving prominent 115 turns to dieback position from neutral position, it is prominent due to driving
Frictional force between 115 and the inner wall of rotating cylinder 122 out, expander valve bar 12 can still occurs initially in this with drive shaft 11
Rotation, until driving prominent 115 reaches dieback position.Once driving prominent 115 reaches dieback position, expander valve bar 12 and drive
Turn axis 11 starts to rotate synchronously.
In the rotation process of handle 7, the revolving speed of handle 7 is reduced by driving worm gear 10, and the torque of drive shaft 11 obtains
It increases substantially, expander speed is fast, high-efficient.Obviously, driving worm gear 10 is driven to slow down here with driving worm screw 8, benefit
It is also feasible, such as gear set or planetary gear set etc. with other slowing-down structures.
It is the operation chart of second of embodiment of tube expander of the invention, Jin Jinxian as shown in Figure 15 to Figure 19
Drive shaft 11 and a pair of of expander valve bar 120 are shown.Unlike former embodiment, in the inner wall of rotating cylinder 122
On be symmetrically equipped with a pair of progressive cambered surface 1221, which is in an involute.
As shown in Figure 16 and Figure 17, at this point, the driving prominent 115 of drive shaft 11, which starts to head into, slides into inclined-plane 125.Work as drive
Turn axis 11 continues to rotate, and driving prominent 115 starts to slide against progressive cambered surface 1221, so that a pair of of expander valve bar 12 is progressively
Outside separated in synchronization and the inner wall for squeezing copper pipe simultaneously, until driving protrudes 115 for progressive 1221 dieback of cambered surface.In expander valve bar
During 120 progressive separation, expander valve bar 120 is also as drive shaft 11 rotates.Once driving prominent 115 reaches
Dieback position, expander valve bar 120 are rotated synchronously with drive shaft 11, quickly complete the expander operation of copper pipe joint.Due to using
The progressive cambered surface 1221 of reducing type, copper pipe expand good evenness, and consistency of thickness is good.
It as shown in Figure 20 and Figure 21, is the third embodiment of tube expander of the invention.At this point, in expander valve bar 1200
Progressive cambered surface 1221 be equipped with several resistance horizontal stripes 12211, for improving between driving prominent 115 and progressive cambered surface 1221
Frictional force.
It as shown in Figure 22 and Figure 23, is the 4th kind of embodiment of tube expander of the invention.Not with the third embodiment
It is both that several release arc slots 12212 are equipped in the progressive cambered surface 1221 of expander valve bar 12000, these release arc slots
12212 arc groove depth is sequentially reduced.
When drive shaft 11 rotates and starts to slide against progressive cambered surface 1221, so that a pair of of expander valve bar 12000 is progressive
The outside separated in synchronization in ground and the inner wall for squeezing copper pipe simultaneously, until driving protrudes 115 for progressive 1221 dieback of cambered surface.It is prominent in driving
Out before 115 arrival dieback positions, driving prominent 115 can be sequentially entered in several release arc slots 12212, so that a pair of of expander valve
Subtle reduction temporarily occurs for the dilation dimension of bar 12000, so that the deformational stress of inflated copper pipe is released and alleviates.
That is, the deformational stress of copper pipe obtains multiple release and alleviation, copper pipe before driving prominent 115 reaches dieback position
Deformation uniformity be greatly improved, consistency of thickness is good.
It is the 5th kind of embodiment of tube expander of the invention, with aforementioned four kinds of embodiments as shown in Figure 24 to Figure 34
Unlike, a pawl assembly R is introduced in embodiment at this time.The effect of pawl assembly R and application method are later
In can explain detailedly.
If Figure 27, drive shaft 11A run through the worm gear axis hole 101, drive shaft 11A includes a columned shaft
The side wall of main body 111A, shaft main body 111A are equipped with a locking horizontal stripe 1111A, the locking horizontal stripe 1111A and the lock groove
Mouth 102 matches, and the tail portion of shaft main body 111A is equipped with columned first connection a cylinder 112A, shaft main body 111A
Head be equipped with one it is columned second connection cylinder 113A, this second connection cylinder 113A top outer wall circumferential direction on set
There is the prominent 115A of several drivings, first connection cylinder 112A runs through one first spring bearing 14.
Expander component SA is rotatably arranged in the head of drive shaft 11A, which runs through one second
Spring bearing 13, the expander component SA include the expander valve bar 12A, several reset spring coil 16A, a pair of of arc of a pair of opposing
Spring seat slice 15A and a pawl assembly R, the head of expander valve bar 12A is equipped with a ladder tringle 121, expander valve bar 12A
Tail portion be equipped with the rotating cylinder 122A of a semi-circular cylindrical, the outer wall of expander valve bar 12A is equipped with the upper spring of several arcs
The inner wall of locating slot 120A, spring seat slice 15A are equipped with the lower spring positioning slot 151A, reset spring coil 16A of several arcs
It is separately positioned between the upper spring locating slot 120A and lower spring positioning slot 151A.
As shown in figure 31, pawl assembly R is arranged between rotating cylinder 122A, and pawl assembly R includes a pawl circle
Seat 17, several reduction torsion springs 19 and several expansion pawls 18, the pawl ring support 17 include the ring support main body 171 of an annular, the circle
Several pawl rotation circular grooves 172 and the fixed circular groove 173 of several torsional springs are evenly provided in the inner wall circumferential direction of seat main body 171, it is adjacent
Pawl rotation circular groove 172 and the fixed circular groove 173 of torsional spring between be respectively equipped with one and supply the movable activity space of expansion pawl 18
174, the spring body setting of the reduction torsion spring 19 is in the fixed circular groove 173 of the torsional spring.
As shown in figure 34, which includes a pawl main shaft 181, and one end of the pawl main shaft 181 is equipped with a wedge
First driving convex block 182 of shape, the other end of the pawl main shaft 181 are equipped with a second discoid driving convex block 185, this first
The end of convex block 182 is driven to be equipped with a columned convex block rotation axis 183, which is rotatably arranged in this
In pawl rotation circular groove 172, a torsional spring card slot 184, reduction torsion spring 19 are respectively equipped on the outer wall of the first driving convex block 182
A wherein spring leg be stuck in the torsional spring card slot 184, another spring leg of reduction torsion spring 19 then resists the bottom of activity space 174.
In this way, each reduction torsion spring 19 oppresses corresponding expansion pawl 18, and expansion pawl 18 is had towards pawl ring support 17
The trend of pivot.Obviously, the quantity of reduction torsion spring 19 and expansion pawl 18 can be arbitrarily arranged.
The course of work of the embodiment is described below.As illustrated in figs. 25 and 26, when drive shaft 11A rotation, driving
Prominent 115A starts the inner wall sliding of the first driving convex block 182 against expansion pawl 18 (by the side wall where torsional spring card slot 184
It is defined as the outer wall of the first driving convex block 182), then, four expansion pawls 18 start to swing out, meanwhile, expansion pawl 18
Discoid second driving convex block 185 start to squeeze rotating cylinder 122A so that a pair of outside separated in synchronization of expander valve bar 12A
And the inner wall of copper pipe is squeezed simultaneously, until driving prominent 115A by the inner wall dieback of rotating cylinder 122A.Then, this is to expander valve
Bar 12A continues to rotate synchronously with drive shaft 11A, quickly completes the expander operation of copper pipe joint.When completion expander
Afterwards, handle 7 is rotated backward, prominent 115A is driven to come back on neutral position as shown in Figure 26, is resetting spring coil 16A's
Under effect, expander valve bar 12A closes up into a cylinder or approximate cylinder again.Due to being expanded using multiple spot bit synchronization, the shape of copper pipe
Become uniformity to effectively improve.
The tube expander operates conveniently, and no dependence electric power is suitble to the expander operation of the copper pipe of a variety of calibers, is also suitble to other soft
The expander operation of metal tube.
Not limited to this, any change or replacement expected without creative work should all be covered in guarantor of the invention
Within the scope of shield.Therefore, protection scope of the present invention should be determined by the scope of protection defined in the claims.
Claims (2)
1. a kind of multi-point tube expander, which is characterized in that the multi-point tube expander (1) includes:
The center of the shell (2) of a pair of opposing, the shell (2) is equipped with a fixed shaft hole (21), the fixing axle
The circumferential direction in hole (21) is equipped with several first connected circular holes (22), is respectively equipped with half on the front-rear side walls of the shell (2)
Circular mouth of connecting trough (23), the circumferential direction of the mouth of connecting trough (23) is equipped with several second connected circular holes (24), described
The first connection the ring disk (3) of an annular is respectively equipped on the outside of first connected circular hole (22), first connection the ring disk (3)
Circumferential direction is equipped with several first the ring disk circular holes (31), the first the ring disk circular hole (31) and first connected circular hole (22)
It is connected respectively by one first attachment screw (4), the second of an annular is respectively equipped on the outside of the mouth of connecting trough (23)
It connecting the ring disk (5), the circumferential direction of described second connection the ring disk (5) is equipped with several second the ring disk circular holes (51), and described second
The ring disk circular hole (51) is connected by one second attachment screw (6) respectively with second connected circular hole (24)；
One driving worm screw (8), the driving worm screw (8) is rotatably arranged between the mouth of connecting trough (23), described
Driving worm screw (8) include that a worm shaft (81) and a worm gear denticle (82), the both ends of the worm shaft (81) are respectively equipped with
One worm bearing (9), the worm bearing (9) are separately positioned between the mouth of connecting trough (23)；
One handle (7), the handle (7) are removably disposed in the tail portion of the worm shaft (81)；
One driving worm gear (10), the driving worm gear (10) be arranged between the fixed shaft hole (21) and with the snail
Wheel denticle (82) matches, and the center of the driving worm gear (10) is equipped with a worm gear axis hole (101), the worm gear axis hole
(101) inner wall is equipped with a locking notch (102)；
One drive shaft (11A), the drive shaft (11A) run through the worm gear axis hole (101), the drive shaft
(11A) includes a columned shaft main body (111A), and the side wall of the shaft main body (111A) is equipped with a locking horizontal stripe
(1111A), the locking horizontal stripe (1111A) are matched with the locking notch (102), the shaft main body (111A)
Tail portion be equipped with columned first connection cylinder (112A), it is cylindric that the head of the shaft main body (111A) is equipped with one
The second connection cylinder (113A), it is prominent that the outer wall circumferential direction at the top of described second connection cylinder (113A) is equipped with several drivings
(115A) out, first connection cylinder (112A) run through one first spring bearing (14)；
One expander component (SA), the expander component (SA) are rotatably arranged in the head of the drive shaft (11A),
The expander component (SA) runs through one second spring bearing (13), and the expander component (SA) includes a pair of opposing
Expander valve bar (12A), several spring seat slices (15A) and a pawl assembly (R) for resetting spring coil (16A), a pair of of arc, it is described
The head of expander valve bar (12A) is equipped with a ladder tringle (121), and the tail portion of the expander valve bar (12A) is equipped with a semicircular cylinder
The rotating cylinder (122A) of shape, the outer wall of the expander valve bar (12A) are equipped with the upper spring locating slot of several arcs
(120A), the inner wall of the spring seat slice (15A) are equipped with the lower spring positioning slot (151A) of several arcs, the reset
Spring coil (16A) is separately positioned between the upper spring locating slot (120A) and lower spring positioning slot (151A)；The spine
Claw assembly (R) includes a pawl ring support (17), several reduction torsion springs (19) and several expansion pawls (18), the pawl ring support
(17) include an annular ring support main body (171), be evenly provided with several spine in the inner wall circumferential direction of the ring support main body (171)
Pawl rotates circular groove (172) and several torsional springs are fixed circular groove (173), adjacent pawl rotation circular groove (172) and the fixed circular groove of torsional spring
(173) it is respectively equipped with one between and supplies described expansion pawl (18) the movable activity space (174), the reduction torsion spring (19)
Spring body be arranged in the torsional spring fixed circular groove (173), the expansion pawl (18) includes a pawl main shaft (181),
One end of the pawl main shaft (181) is equipped with the first driving convex block (182) of a wedge shape, the pawl main shaft (181)
The other end is equipped with second discoid driving convex block (185), and the end of first driving convex block (182) is equipped with a cylinder
The convex block rotation axis (183) of shape, the convex block rotation axis (183) are rotatably arranged in the pawl rotation circular groove
(172) in, a torsional spring card slot (184) is respectively equipped on the outer wall of first driving convex block (182)；
Wherein, the expander valve bar (12A) is between one first operating position and one second operating position, when the expansion
When pipe valve bar (12A) is in the first operating position, a pair of of expander valve bar (12A) closes up into a cylinder, when the expansion
When pipe valve bar (12A) is in the second operating position, separation simultaneously squeezes copper pipe to a pair of of expander valve bar (12A) simultaneously outward
Inner wall.
2. multi-point tube expander according to claim 3, which is characterized in that the expander valve bar (12) has magnetism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810999759.3A CN109108171A (en) | 2017-11-14 | 2017-11-14 | Multi-point tube expander |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711124756.7A CN107639171A (en) | 2017-11-14 | 2017-11-14 | Multi-point tube expander |
| CN201810999759.3A CN109108171A (en) | 2017-11-14 | 2017-11-14 | Multi-point tube expander |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711124756.7A Division CN107639171A (en) | 2017-11-14 | 2017-11-14 | Multi-point tube expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109108171A true CN109108171A (en) | 2019-01-01 |
Family
ID=61125951
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810999765.9A Withdrawn CN109047528A (en) | 2017-11-14 | 2017-11-14 | Pawl assembly for tube expander |
| CN201711124756.7A Pending CN107639171A (en) | 2017-11-14 | 2017-11-14 | Multi-point tube expander |
| CN201810999759.3A Withdrawn CN109108171A (en) | 2017-11-14 | 2017-11-14 | Multi-point tube expander |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810999765.9A Withdrawn CN109047528A (en) | 2017-11-14 | 2017-11-14 | Pawl assembly for tube expander |
| CN201711124756.7A Pending CN107639171A (en) | 2017-11-14 | 2017-11-14 | Multi-point tube expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN109047528A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116493483B (en) * | 2023-06-29 | 2023-09-15 | 江苏宏亿精工股份有限公司 | Safety belt pretensioner pipe production equipment |
| CN117428098B (en) * | 2023-12-20 | 2024-03-05 | 成都天科航空制造股份有限公司 | Pipe fitting spinning processing device and processing method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4055064A (en) * | 1976-01-08 | 1977-10-25 | Schow Virgle L | Muffler and tail pipe expander and cleaner |
| US5090230A (en) * | 1991-04-02 | 1992-02-25 | Kauno Koskinen Ky | Pipe expanding pliers |
| WO2004097169A1 (en) * | 2003-04-25 | 2004-11-11 | Shell Internationale Research Maatschappij B.V. | Expander system for incremental expansion of a tubular element |
| DE102012100894A1 (en) * | 2012-02-03 | 2013-08-08 | Rehau Ag + Co | Expander head for expander tools, this comprehensive expansion tool and their use |
| CN203917668U (en) * | 2014-07-10 | 2014-11-05 | 金华市威科工贸有限公司 | Eccentric tube expander ratchet mechanism |
| CN106563737A (en) * | 2015-10-09 | 2017-04-19 | 常州良旭车辆配件有限公司 | Pipe-expansion tip cone and pipe-expansion method of the same |
| CN106903231A (en) * | 2017-01-24 | 2017-06-30 | 宁波菲力克汽配有限公司 | A kind of port forming machine |
| CN109589161B (en) * | 2017-06-03 | 2023-06-30 | 成都五义医疗科技有限公司 | Chuck type reducer sleeve device and puncture outfit |
-
2017
- 2017-11-14 CN CN201810999765.9A patent/CN109047528A/en not_active Withdrawn
- 2017-11-14 CN CN201711124756.7A patent/CN107639171A/en active Pending
- 2017-11-14 CN CN201810999759.3A patent/CN109108171A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN109047528A (en) | 2018-12-21 |
| CN107639171A (en) | 2018-01-30 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190101 |
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| WW01 | Invention patent application withdrawn after publication |