CN109433909A - A kind of symmetrical punching apparatus of straight tube - Google Patents
A kind of symmetrical punching apparatus of straight tube Download PDFInfo
- Publication number
- CN109433909A CN109433909A CN201811347369.4A CN201811347369A CN109433909A CN 109433909 A CN109433909 A CN 109433909A CN 201811347369 A CN201811347369 A CN 201811347369A CN 109433909 A CN109433909 A CN 109433909A
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- CN
- China
- Prior art keywords
- thimble
- straight tube
- punching
- thimbles
- locating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004080 punching Methods 0.000 title claims abstract description 104
- 230000035939 shock Effects 0.000 claims description 16
- 238000001125 extrusion Methods 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 12
- 229910052802 copper Inorganic materials 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- CJRQAPHWCGEATR-UHFFFAOYSA-N n-methyl-n-prop-2-ynylbutan-2-amine Chemical compound CCC(C)N(C)CC#C CJRQAPHWCGEATR-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a kind of symmetrical punching apparatus of straight tube, including base, locating shaft, top plate and pressed sheet, locating shaft is arranged horizontally on base, the end of locating shaft is cased with straight tube, locating shaft and straight tube are coaxially disposed, top plate is arranged perpendicular to locating shaft, No.1 punching hole is offered on top plate, straight tube is located in No.1 punching hole, there are gaps between the side wall and straight tube of No.1 punching hole, No.1 thimble and No. two thimbles are provided on the side wall of No.1 punching hole, No.1 thimble and No. two thimbles are along the radially movable setting of straight tube, run through top plate in the radially No.1 thimble of straight tube and No. two thimbles, pressed sheet is arranged perpendicular to locating shaft, the centre of pressed sheet offers No. two punching holes, top plate is located in No. two punching holes, there are gaps between top plate and the side wall of No. two punching holes, pressed sheet is rotated around locating shaft.
Description
[technical field]
The present invention relates to a kind of symmetrical punching apparatus of straight tube, belong to pipe fitting production field.
[background technique]
Copper pipe in process of production, needs to punch positions multiple on its side wall, different holes on the copper pipe produced
Between relative position need to fix, to guarantee the stabilization of same batch copper pipe quality.But now in copper pipe production process
What is implemented is substep drilling technology, therefore the relative position in different holes is unable to get and is effectively ensured on same batch copper pipe, causes
The copper pipe quality stability produced cannot be effectively ensured.Furthermore substep drilling technology can also make the production efficiency of copper pipe drop
It is low.
[summary of the invention]
A kind of symmetrical punching of straight tube is provided technical problem to be solved by the present invention lies in overcome the deficiencies in the prior art
Equipment, efficiently to produce the high copper pipe of quality stability in batches.
Above-mentioned technical problem is solved, the present invention adopts the following technical scheme:
A kind of symmetrical punching apparatus of straight tube, including base, locating shaft, top plate and pressed sheet, locating shaft is in the horizontal direction
It is arranged on base, the end of locating shaft is cased with straight tube, and locating shaft and straight tube are coaxially disposed, and top plate is arranged perpendicular to locating shaft,
No.1 punching hole is offered on top plate, straight tube is located in No.1 punching hole, and there are skies between the side wall and straight tube of No.1 punching hole
Gap is provided with No.1 thimble and No. two thimbles on the side wall of No.1 punching hole, and No.1 thimble and No. two thimbles are along the diameter of straight tube
It is arranged to activity, runs through top plate in the radially No.1 thimble of straight tube and No. two thimbles, pressed sheet is arranged perpendicular to locating shaft,
The centre of pressed sheet offers No. two punching holes, and top plate is located in No. two punching holes, between top plate and the side wall of No. two punching holes
There are gap, the outer end of the outer end of No.1 thimble and No. two thimbles is respectively positioned on the gap between top plate and the side wall of No. two punching holes
In, the inner end of the inner end of No.1 thimble and No. two thimbles is respectively positioned in No.1 punching hole, and pressed sheet is rotated around locating shaft, No. two punchings
The outer end of the sidewall extrusion No.1 thimble in hole and the outer end of No. two thimbles are pressed, so that No.1 thimble and No. two thimbles are simultaneously along straight
The radial direction of pipe is to straight tube punching press.
The invention has the benefit that
Locating shaft is supported straight tube, is punched by No.1 thimble and No. two the synchronous of thimble, promotes pipe fitting production
Efficiency.Furthermore angle is fixed always between No.1 thimble and No. two thimbles, therefore for the straight tube of tubulose, two beaten
Hole relative position is fixed always, ensure that the copper pipe quality stability produced.To No.1 thimble on the side wall of No. two punching holes
Relative position between two positions being hit of No. two thimbles is also fixed, therefore ensure that No.1 thimble and No. two thimbles
Property while punching press.
The side wall of No. two punching holes of the present invention along straight tube it is radially inwardly projecting be formed with No.1 and hit wall and No. two hit
Wall is hit, No.1 is hit No. two shock walls when wall hits No.1 thimble and hit to No. two thimbles.
No.1 thimble of the present invention and No. two thimbles are axially and symmetrically arranged along locating shaft, and No.1 hits wall and No. two shocks
Wall is axially and symmetrically arranged along locating shaft.
No.1 thimble of the present invention and No. two thimbles are thimble, thimble be located at top plate and No. two punching holes side wall it
Between end be provided with branch fastener, reset spring, top plate inner hollow are cased on thimble, reset spring is located in top plate, reset
The both ends of spring are pressed on respectively on branch fastener and the side wall of No.1 punching hole.
No.1 thimble of the present invention and No. two thimbles are arranged towards locating shaft.
The symmetrical punching apparatus of straight tube of the present invention further includes cylinder, and locating shaft is connect with cylinder, and cylinder drives locating shaft
It is axially moved along straight tube.
The other features and advantages of the invention will the detailed exposure in following specific embodiment, attached drawing.
[Detailed description of the invention]
Following further describes the present invention with reference to the drawings:
Fig. 1 is the symmetrical punching apparatus schematic perspective view of straight tube of the embodiment of the present invention；
Fig. 2 is the symmetrical punching apparatus configuration schematic diagram of straight tube of the embodiment of the present invention.
[specific embodiment]
The technical solution of the embodiment of the present invention is explained and illustrated below with reference to the attached drawing of the embodiment of the present invention, but under
It states embodiment to be merely a preferred embodiment of the present invention, and not all.Based on the implementation example in the implementation mode, those skilled in the art
Obtained other embodiments without making creative work, belong to protection scope of the present invention.
In the following description, occur term "inner", "outside", "upper", "lower", the indicating positions such as "left", "right" or
Positional relationship description embodiment merely for convenience and simplified description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Embodiment:
As shown in Figs. 1-2, the symmetrical punching apparatus of a kind of straight tube that the present embodiment is shown, including cylinder 11, base 1, support
Plate 13, locating shaft 2, top plate 3 and pressed sheet 4.
Support plate 13 is fixed on vertically on base 1, and cylinder 11 is mounted on base 1 by support plate 13, locating shaft 2 and gas
Cylinder 11 connects, and locating shaft 2 and cylinder 11 are in the horizontal direction, cylinder 11 drive locating shaft 2 along locating shaft 2 itself it is axial into
Row movement.Cylinder 11 is located at the rear side of support plate 13, before punching press and when punching press, cylinder 11 by locating shaft 2 far from cylinder 11 one
End (i.e. 2 front end of locating shaft) is moved to the front side of support plate 13, and is socketed straight tube 5 in the front end of locating shaft 2, so that locating shaft 2
It is coaxially disposed with straight tube 5, locating shaft 2 plays support positioning action to straight tube 5.After the completion of punching press, cylinder 11 will be before locating shaft 2
End is moved in the rear side or support plate 13 of support plate 13, so that straight tube 5 loses 2 supporting role of locating shaft and falls back naturally
It receives.
Top plate 3 is arranged perpendicular to locating shaft 2, and top plate 3 is equally arranged along the vertical direction, and top plate 3 is fixed on support plate 13
On leading flank.
The centre of top plate 3 offers No.1 punching hole 6, and locating shaft 2 is axial in No.1 punching along itself under the control of cylinder 11
Pressure passes in and out in hole 6.Before punching press and when punching press, the front end of locating shaft 2 is located in No.1 punching hole 6, is covered at this time in 2 front end of locating shaft
Straight tube 5 also be located in No.1 punching hole 6, and there are gaps between the side wall of No.1 punching hole 6 and the outer wall of straight tube 5.
No.1 thimble 7 and No. two thimbles 8 are provided on the side wall of No.1 punching hole 6, No.1 thimble 7 and No. two thimbles 8 are equal
Along the radially movable setting of straight tube 5, the symmetrical punching apparatus of the straight tube of the present embodiment relies on No.1 thimble 7 and No. two thimbles 8 to exist
The radial direction of straight tube 5 punches straight tube 5.Angle between No.1 thimble 7 and No. two thimbles 8 realizes determination by top plate 3,
Because of the high symmetry of straight tube 5 itself, the hole and No. two thimbles 8 that No.1 thimble 7 is beaten on straight tube 5 are beaten on straight tube 5
Hole between relative position be fixed, also it is achieved that the copper pipe matter of the present embodiment straight tube symmetrical punching apparatus production
Measure stability.
Of course for the further copper pipe quality stability for promoting production, it is also necessary to guarantee No.1 thimble 7 and No. two thimbles 8
Carry out punching press while property.If No.1 thimble 7 and No. two thimbles 8 are non-concurrent to the progress punching press of straight tube 5, in No.1 thimble 7
In time difference between punch steps and the punch steps of No. two thimbles 8, straight tube 5 may generate shaking, cause to rush on straight tube 5
The relative position in two holes extruded generates deviation, and the copper pipe quality stability produced is caused to decline.
No.1 thimble 7 and No. two thimbles 8 are thimble, and the end that thimble is located at 5 radially inner side of straight tube is the inner end of thimble,
The end that thimble is located at 5 radial outside of straight tube is the outer end of thimble.Straight tube 5 radially, No.1 thimble 7 and No. two thimbles 8
Run through top plate 3, the inner end of No.1 thimble 7 is located in No.1 punching hole 6, and the outer end of No.1 thimble 7 is located at the outside of top plate 3,
The inner end of No. two thimbles 8 is located in No.1 punching hole 6, and the outer end of No. two thimbles 8 is located at the outside of top plate 3.By to No.1 top
The outer end of needle 7 and the outer end of No. two thimbles 8 control simultaneously, so that it is guaranteed that No.1 thimble 7 and No. two 8 punching press simultaneities of thimble.
The outer end of No.1 thimble 7 and the outer end of No. two thimbles 8 are as follows with period control method: pressed sheet 4 is perpendicular to locating shaft 2
Setting, and pressed sheet 4 is mounted on the leading flank of support plate 13.The centre of pressed sheet 4 opens up No. two punching holes 17, and 3, top plate
In in No. two punching holes 17, and there are gap between the outer wall of top plate 3 and the side wall of No. two punching holes 17, No.1 thimble 7 it is outer
End and the outer end of No. two thimbles 8 are respectively positioned in the gap.Pressed sheet 4 is rotated around locating shaft 2.Under non punching state, No.1 top
The outer end of needle 7 does not contact with the outer end of No. two thimbles 8 with the side wall of No. two punching holes 17.When needing to carry out punching press, rotation punching
Pressing plate 4, specific two parts of No. two 17 side walls of punching hole can squeeze the outer end of No.1 thimble 7 and the outer end of No. two thimbles 8, make
No.1 thimble 7 and No. two thimbles 8 moving radially inwardly along straight tube 5 simultaneously are obtained, thus to straight tube on contact to the outer wall of straight tube 5
5 punching presses.
The side wall one of which specific working mode of No. two punching holes 17 is as follows: a No. two punching holes 17 substantially circle
The side wall in hole, No. two punching holes 17 hits wall 9 and No. two shock walls 10 along the radially inwardly projecting No.1 that is formed with of straight tube 5, therefore
No.1 hits wall 9 and the relative position of No. two shock walls 10 is fixed.The non-No.1 of No. two 17 side walls of punching hole hits the two of 9 sum of wall
Number 10 part of shock wall is identical along the radial distance to 2 axis of locating shaft of locating shaft 2, is d.Locating shaft 2 radially,
No.1 hits wall 9 to the distance of 2 axis of locating shaft and the distance of No. two shock walls 10 to 2 axis of locating shaft and is respectively less than d.When non-punching
Under pressure condition, the outer end of the outer end of No.1 thimble 7 and No. two thimbles 8 is radially directed to No. two 17 sides of punching hole in locating shaft 2
The non-No.1 of wall hits No. two 10 parts of shock wall of 9 sum of wall, and between the outer wall of top plate 3 and the side wall of No. two punching holes 17
Gap distance is sufficient to make the outer end of No.1 thimble 7 and the outer end of No. two thimbles 8 not to contact with No. two 17 side walls of punching hole.When
Pressed sheet 4 is rotated, until No.1 shock wall 9 is opposite with the outer end of No.1 thimble 7, while No. two shock walls 10 and No. two thimbles 8
Outer end it is opposite, at this time No.1 hit wall 9 can be along the outer end of 5 radial compression No.1 thimble 7 of straight tube, while No. two shock walls
10 can meet wanting for No.1 thimble 7 and No. two 8 punching press simultaneities of thimble along the outer end of 5 No. two thimbles 8 of radial compression of straight tube
It asks.
No.1 thimble 7 and No. two thimbles 8 are axially and symmetrically arranged along locating shaft 2 in the present embodiment, and corresponding No.1 hits wall 9
Axially and symmetrically it is arranged with No. two shock walls 10 along locating shaft 2.Every 180 ° of the rotation of pressed sheet 4 at this time, can be completed a punching press.
In addition, No.1 thimble 7 and No. two thimbles 8 are arranged towards locating shaft 2 when punching press, therefore the inner end of No.1 thimble 7
It can be impinged upon on locating shaft 2 along straight tube 5 radially across straight tube 5 with the inner end of No. two thimbles 8, avoid the interior of No.1 thimble 7
The risk that end and the inner end of No. two thimbles 8 are bumped against.
2 diameter of locating shaft is thicker, the diameter of No.1 thimble 7 and the diameter of No. two thimbles 8 is had a diameter larger than, compared to elongated
For No.1 thimble 7 and No. two thimbles 8 bump against, No.1 thimble 7 and locating shaft 2 bump against and No. two thimbles 8 and locating shaft 2 bump against
It is more not easy to damage No.1 thimble 7 and No. two thimbles 8.Because regardless of No.1 thimble 7 and No. two 8 relative positions of thimble,
7 inner end of No.1 thimble and locating shaft 2 bump against, and the stress of No.1 thimble 7 is along No.1 thimble 7 itself axial direction, No. two thimbles 8
End and locating shaft 2 bump against, and the stress of No. two thimbles 8 is, therefore No.1 thimble 7 and No. two tops axial along No. two thimbles 8 itself
Needle 8 is hardly damaged.
No.1 thimble 7 and No. two thimbles 8 not point-blank in the case of, No.1 thimble 7 and No. two thimbles 8 bump against, two
Number 8 stress of thimble is axial along No.1 thimble 7, and non-No. two thimbles 8 are axial, and 7 stress of No.1 thimble is axial along No. two thimbles 8, and non-one
Number thimble 7 is axial, therefore No.1 thimble 7 and No. two thimbles 8 are easily damaged.
In the case that the present embodiment No.1 thimble 7 and No. two thimbles 8 point-blank carry out punching press when, No.1 hit wall
9, interaction force is along same straight line between No.1 thimble 7,2, No. two thimbles 8 of locating shaft and No. two shock walls 10, therefore one
The service life of number thimble 7 and No. two thimbles 8 can be greatly improved, even if in 7 inner end of No.1 thimble and No. two thimbles 8
End, which is directly bumped against, to be also hardly damaged.
The outer end of thimble is provided with branch fastener 14.By taking No.1 thimble 7 as an example, it is cased with reset spring 15 on No.1 thimble 7, pushes up
3 inner hollow of plate, reset spring 15 are located in top plate 3, and the both ends of reset spring 15 are pressed on branch fastener 14 and No.1 punching respectively
On the side wall for pressing hole 6.When punching press, No.1 hits the branch fastener 14 that wall 9 squeezes 7 outer end of No.1 thimble, while the branch fastener of arc
14 also can be reduced the frictional force between No.1 shock wall 9, and No.1 thimble 7 and branch fastener 14 are radially-inwardly squeezed along straight tube 5 together
Pressure, since the side wall of No.1 punching hole 6 is static with respect to straight tube 5, the inner end of reset spring 15 is motionless, in 14 moving process of branch fastener
The outer end of meeting pressed home spring 15.Rotation pressed sheet 4 is completed in punching press, when No.1 hits the support of wall 9 and 7 outer end of No.1 thimble
First 14 separation, the branch fastener 14 of No.1 thimble 7 then can under the effect of the reset spring 15 on No.1 thimble 7 along straight tube 5 it is radial to
Outer pop-up, the inner end of No.1 thimble 7 are separated with straight tube 5 immediately, and the branch fastener 14 of No.1 thimble 7 resets, at this time branch fastener 14 with
No. two 17 side walls of punching hole are consistent before 5 radial spacing of straight tube and punching press.The method of operation of No. two thimbles 8 is similarly.Therefore
Drill process can guarantee No.1 thimble 7 and No. two 8 while property of thimble each time.
Preferably, it is provided with nut 18 on 3 outer wall of top plate, branch fastener 14 passes in and out in nut 18.It is with No.1 thimble 7
Example, the branch fastener 14 of No.1 thimble 7 is hit wall 9 and is squeezed and submerged in the hole among nut 18 completely by No.1 when punching press.Punching press
After completion and No.1 hit the separation of branch fastener 14 of wall 9 and No.1 thimble 7, the branch fastener 14 of No.1 thimble 7 is from nut 18
Between hole in pop up, nut 18 can prevent No.1 thimble 7 branch fastener 14 reset when due to inertia drive 7 edge of No.1 thimble
The radially outward excessive mobile side wall for hitting No. two punching holes 17 of straight tube 5.Branch fastener 14 is gone back when the intermediate hole of nut 18 passes in and out
The movement of branch fastener 14 can be oriented to.Nut 18 at No. two thimbles 8 is identical as above-mentioned principle.
It is protected in addition, cover board 12 can also be arranged in the front side of No.1 punching hole 6 when punching press.The edge of pressed sheet 4 to
Outer protrusion forms driving section 16, drives pressed sheet 4 to rotate by driving section 16.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, is familiar with
The those skilled in the art should be understood that the present invention includes but is not limited to attached drawing and interior described in specific embodiment above
Hold.Any modification without departing from function and structure principle of the invention is intended to be included in the range of claims.
Claims (6)
1. a kind of symmetrical punching apparatus of straight tube, it is characterised in that: including base, locating shaft, top plate and pressed sheet, locating shaft edge
Horizontally arranged the end of locating shaft is cased with straight tube on base, and locating shaft and straight tube are coaxially disposed, and top plate is perpendicular to positioning
Axis is arranged, and offers No.1 punching hole on top plate, straight tube is located in No.1 punching hole, between the side wall and straight tube of No.1 punching hole
There are gap, No.1 thimble and No. two thimbles are provided on the side wall of No.1 punching hole, No.1 thimble and No. two thimbles are along straight
The radially movable setting of pipe runs through top plate in the radially No.1 thimble of straight tube and No. two thimbles, and pressed sheet is perpendicular to positioning
Axis setting, the centre of pressed sheet offer No. two punching holes, and top plate is located in No. two punching holes, the side of top plate and No. two punching holes
There are gap between wall, the outer end of the outer end of No.1 thimble and No. two thimbles is respectively positioned between top plate and No. two punching hole side walls
In gap, the inner end of the inner end of No.1 thimble and No. two thimbles is respectively positioned in No.1 punching hole, and pressed sheet is rotated around locating shaft, and two
The outer end of the sidewall extrusion No.1 thimble of number punching hole and the outer end of No. two thimbles, so that No.1 thimble and No. two thimbles are simultaneously
Along the radial to straight tube punching press of straight tube.
2. the symmetrical punching apparatus of straight tube according to claim 1, it is characterised in that: the side wall of No. two punching holes is along straight
It manages the radially inwardly projecting No.1 that is formed with and hits wall and No. two shock walls, No.1 hits No. two shocks when wall hits No.1 thimble
Wall hits No. two thimbles.
3. the symmetrical punching apparatus of straight tube according to claim 2, it is characterised in that: the No.1 thimble and No. two thimble edges
Locating shaft is axially and symmetrically arranged, and No.1 hits wall and No. two shock walls are axially and symmetrically arranged along locating shaft.
4. the symmetrical punching apparatus of straight tube according to claim 3, it is characterised in that: the No.1 thimble and No. two thimbles are equal
For thimble, end of the thimble between top plate and the side wall of No. two punching holes is provided with branch fastener, reset bullet is cased on thimble
Spring, top plate inner hollow, reset spring are located in top plate, and the both ends of reset spring are pressed on branch fastener and No.1 punching hole respectively
Side wall on.
5. the symmetrical punching apparatus of straight tube according to claim 1, it is characterised in that: the No.1 thimble and No. two thimbles are equal
It is arranged towards locating shaft.
6. the symmetrical punching apparatus of straight tube according to claim 1, it is characterised in that: the symmetrical punching apparatus of straight tube also wraps
Cylinder is included, locating shaft is connect with cylinder, and cylinder driving locating shaft is axially moved along straight tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811347369.4A CN109433909A (en) | 2018-11-13 | 2018-11-13 | A kind of symmetrical punching apparatus of straight tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811347369.4A CN109433909A (en) | 2018-11-13 | 2018-11-13 | A kind of symmetrical punching apparatus of straight tube |
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| Publication Number | Publication Date |
|---|---|
| CN109433909A true CN109433909A (en) | 2019-03-08 |
Family
ID=65552829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811347369.4A Pending CN109433909A (en) | 2018-11-13 | 2018-11-13 | A kind of symmetrical punching apparatus of straight tube |
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| CN105234259A (en) * | 2015-11-25 | 2016-01-13 | 重庆持恒模具有限公司 | Automatic blanking bidirectional punching die |
| CN207014469U (en) * | 2017-06-08 | 2018-02-16 | 南京宏安医疗科技有限公司 | Plastic tube side punching machine |
| CN107116132A (en) * | 2017-06-23 | 2017-09-01 | 芜湖德丰汽车零部件有限公司 | A kind of horizontal hole punched device |
| CN107225157A (en) * | 2017-08-10 | 2017-10-03 | 苏州金钥匙测试系统有限公司 | Axle extrusion molding dies |
| CN207494307U (en) * | 2017-09-26 | 2018-06-15 | 芳源企业（上海）有限公司 | Rotate punching die |
| CN107639149A (en) * | 2017-10-24 | 2018-01-30 | 浙江联大科技有限公司 | A kind of tube shaped electric machine outer tube hole-punching method and its punching die |
| CN207465920U (en) * | 2017-11-13 | 2018-06-08 | 浙江科翔汽车部件科技有限公司 | A kind of sensor compression tooling |
| CN207479316U (en) * | 2017-11-29 | 2018-06-12 | 河南森源重工有限公司 | A kind of tube body hole punched device and its mold core |
| CN209238806U (en) * | 2018-11-13 | 2019-08-13 | 浙江铜加工研究院有限公司 | A kind of symmetrical punching apparatus of straight tube |
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