CN204866883U - Blank interpolating arrangement of extruder - Google Patents

Blank interpolating arrangement of extruder Download PDF

Info

Publication number
CN204866883U
CN204866883U CN201520110642.7U CN201520110642U CN204866883U CN 204866883 U CN204866883 U CN 204866883U CN 201520110642 U CN201520110642 U CN 201520110642U CN 204866883 U CN204866883 U CN 204866883U
Authority
CN
China
Prior art keywords
blank
holding device
recipient
pushing
insertion apparatus
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.)
Expired - Fee Related
Application number
CN201520110642.7U
Other languages
Chinese (zh)
Inventor
山本武治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ube Machinery Corp Ltd
Original Assignee
Ube Machinery Corp Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ube Machinery Corp Ltd filed Critical Ube Machinery Corp Ltd
Application granted granted Critical
Publication of CN204866883U publication Critical patent/CN204866883U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Extrusion Of Metal (AREA)
  • Making Paper Articles (AREA)

Abstract

The utility model provides a blank interpolating arrangement of extruder, is when being inserted the blank to the recipient hole that is in the extruder center by back loading formula extruder, is carrying back with the blank to the extruder center by blank feeding device, through bulldozing in the blank terminal surface inserts the recipient with the blank, push the blank interpolating arrangement that the device constitutes by blank holding device and blank, made will push the side the blank tip downwards to bulldozing and keeping just for extruded recipient direction freedom of movement.

Description

The blank insertion apparatus of extruder
Technical field
The utility model relates to extruder assembly, particularly relates to the high-quality of extruded product when blank insertion being in the extruding bore at extruder center in rear loaded type extruder.
Background technology
Usually, extruded by metal material by extruder assembly, such as, when the blank that aluminium or its alloy material etc. are formed, in the leading section of the main pressure head by Driven by Hydraulic Cylinder, pressure ram is installed, recipient being shifted onto under the state on mould, blank is accommodated in recipient by pressure ram etc.Then, by making main pressure head be advanced further by the driving of hydraulic cylinder, blank is pushed by pressure ram.There, extrude from the export department of mould the product be formed.
In the extruder assembly of this type in the past, when to recipient filling blank, because the front end of pressure ram must retreat the Length Quantity of this blank, so the stroke of main pressure head becomes the stroke of the length adding pressure ram in charge length.Therefore, in order to ensure the stroke of this main pressure head, the entirety of the extruder assembly of type was grown up and had been changed in the past, drove the hydraulic cylinder of main pressure head itself also to maximize, accompanied therewith, made the oil mass of its action also need many.
In recent years, have employed the short stroke fashion of extrusion being called as rear loaded type.In after this loaded type, when blank supplies, in order to ensure blank supply space, pressure ram is moved.Such as, pressure ram is moved horizontally from pressure ram position originally, in the side of pressure ram, vacate the space of blank supply in the pressure ram side of recipient.To this space supplying blank.
The supply of blank drives the blank insertion apparatus that is provided on blank loader device in the axial direction and inserted by blank and be seated in the blank resettlement section of recipient.
If blank is further inserted into, the filling to blank resettlement section terminates, then blank loader device is kept out of the way from extruder assembly to side, and the input warming-up exercise to next blank is shifted.After this, the pressure ram moved is turned back to the shaft position of blank resettlement section originally by driving.There, by driving main hydraulic cylinder, main pressure head advances, and pressure ram starts the pushing to blank, after, blank is by mould extrusion molding.
Utility model content
Utility model problem to be solved
Such problem below also existing in the extruder of type in the past.
In order to extrude the 1000 such fine aluminium blanks being, when blank is inserted recipient, because material softness, there is viscosity, by below recipient with blank below contact and produce frictional force, so sometimes have to stop in the way of blank being inserted recipient.Therefore, there is extruder running and stop, causing productive reduction.
In addition, in the invention of Japanese Unexamined Patent Publication 7-171618 publication, the such problem below also existing in the extruder of type in the past.
That is, because multiple blank conveying roller is attached on 2 rocking arms, so complex structure, and maintenance is not easy.
And then by pushing away blank by pressure ram, when expanding conveying roller, aluminium is attached in conveying roller.Its result, the slip of conveying roller is deteriorated, and then can not get core material.
In addition, this aluminium is attached on secured blank block, the lifetime of secured blank block, and the maintenance comprising cleaning is also not easy.
In order to solve the means of problem
A kind of blank insertion apparatus, it is the blank insertion apparatus be made up of blank holding device and blank pushing in device, when blank being inserted to the extruding bore being in extruder center by rear loaded type extruder, after delivered blank by blank feedway to extruder center, by pushing away blank end face, blank is inserted in recipient, it is characterized in that
The blank end pushing side is in downward direction pushed and keeps, and makes it relative to the recipient direction freedom of movement of extruder.
Blank insert start time, make to have the blank holding device rotating lever freely and be close to blank Shangdi and push, the frictional force that can and work between blank and recipient correspondingly makes push-on force increase.
Blank holding device has made following structure: the above-below direction that can retrain blank moves to the direction of extrusion unchangeably, and it increases pro rata to the confining force in the lower direction of blank and the load acted on push-on force.
Be separated mode freely with blank pushing in device constitute blank holding device to become, this blank holding device rotatably can push and keep pushing the blank end of side blank end face.
When from the external reception blank of this blank insertion apparatus, blank holding device with blank by mode can keep out of the way to assigned position.
After being terminated to recipient insertion by blank, pushing in device driving chain arranges the device that blank holding device pushes back, and blank holding device can by chain drive action to primary position.
Height below the blank of blank insertion apparatus is relative to being configured in top below recipient a little.
A kind of blank insertion apparatus, it is the blank insertion apparatus be made up of blank holding device and blank pushing in device, when blank being inserted to the extruding bore being in extruder center by rear loaded type extruder, after delivered blank by blank feedway to extruder center, by pushing away blank end face, blank is inserted in recipient, it is characterized in that
Blank holding device and blank pushing in device are made one, this blank holding device has the blank holding device rotating lever freely, the blank end pushing side is in downward direction pushed and keeps and make it relative to the recipient direction freedom of movement of extruder, when blank inserts beginning, the frictional force that can and work between blank and recipient correspondingly makes push-on force increase
This blank holding device has made following structure: the above-below direction that can retrain blank moves to the direction of extrusion unchangeably, and the load acted on push-on force is larger, and this blank holding device more increases the confining force in the lower direction of blank.
The effect of utility model
In order to extrude as 1000 be fine aluminium blank and to recipient insert blank time, material softness, there is viscosity, make confining force act on blank with pushing the lower direction of end by below recipient with blank below contact and create frictional force, but because reduce this frictional force, so can not stop in the way of blank being inserted recipient, extruding running can be carried out continuously, cause productive raising.
Accompanying drawing explanation
Fig. 1 is the figure that basic conception of the present utility model is described.
Fig. 2 (a) ~ Fig. 2 (g) is the overall conceptual view figure of blank insertion apparatus of the present utility model.
Fig. 3 (a), Fig. 3 (b) and Fig. 3 (c) are the figure that blank holding device of the present utility model is described.
Fig. 4 (a) and Fig. 4 (b) is the figure of the state illustrated in the action of blank holding device of the present utility model and blank pushing in device.
Fig. 5 (a) and Fig. 5 (b) is the figure of the primary position that blank holding device of the present utility model and blank pushing in device are described respectively.
Fig. 6 is that monnolithic case figure of the present utility model holds concurrently action flow chart.
Fig. 7 (a) and Fig. 7 (b) are that blank insertion apparatus blank holding device of the present utility model and blank pushing in device having been made one starts to insert the figure of blank and inserts the figure that blank finishes respectively.
Fig. 8 (a) and Fig. 8 (b) is the enlarged drawing of blank insertion apparatus blank holding device of the present utility model and blank pushing in device having been made one.
Fig. 9 is that monnolithic case figure blank holding device of the present utility model and blank pushing in device having been made one holds concurrently action flow chart.
Detailed description of the invention
In order to implement the mode of utility model
Below while with reference to accompanying drawing while explain the embodiment of the blank insertion apparatus of rear loading extruder of the present utility model.
As shown in Figure 6, for rear loading extruder of the present utility model, configure end workbench 1 and master cylinder 7 opposite to each other, and both are linked by multiple pull bar 4.The medial surface of end workbench 1 clips mould 2 ground defining extruded hole and is configured with recipient 3, by loading blank 10 in recipient 3, and it is carried out extruding pressurization towards mould 2, the extruded product in the cross section corresponding to die hole is extruded.
Produce the master cylinder 7 of squeezing action power, built-in main pressure head 8, and it is mobile to make it can carry out pressurization towards recipient 3.In the leading section of this main pressure head 8, in the mode of the blank filling hole concentric arrangement with recipient 3, under the state outstanding towards recipient 3, through main crosshead 6, pressure ram 5 is installed, has made not shown free blank block and the front end close contact of pressure ram 5.Therefore, if drive master cylinder 7, main crosshead 6 is advanced, then pressure ram 5 is inserted into the blank filling hole of recipient 3, pressurizes and squeeze out extruded product to the rear end face of the blank 10 be loaded.
In addition, above-mentioned master cylinder 7 has installed multiple sides cylinder 9 abreast with extruding axle center, and its cylinder bar and main crosshead 6 link.Thus, become following structure: as the preparatory process of extrusion process, pressure ram 5 moved to the position initial stage of carrying out close with recipient 3, extruding compression motion use master cylinder 7 and side cylinder 9 both carry out.
Fig. 1 represents basic conception of the present utility model.If pushed by blank 10 in recipient 3, leading section is sagging downwards because of deadweight.Frictional force due to this phenomenon below blank 10 front end and below recipient 3 between work, bring various disadvantage.Therefore, in the utility model, by pushing the contrary upper front end of blank 10 from above, prevent above-mentioned sagging.
Fig. 2 (a) ~ Fig. 2 (g) represents and contains blank holding device 30, blank pushing in device 50 in the overview of the entirety of interior blank insertion apparatus 70.
Fig. 3 (a), Fig. 3 (b) and Fig. 3 (c) are the side view of the blank holding device representing present embodiment, top view and sectional view respectively.There is no drive source as blank holding device 30, become following structure: the plate 55 that pushes possessed by the blank pushing in device 50 with blank holding device 30 movement independently pushes away, and is moved by linear guide 38.
Blank holding device 30 keeps framework 33, keeping arm 31, respective 2 pushes ball 35 and spring 36 to form by 1, freely can be moved through guide 40, maintenance support 37 by linear guide 38 linearity ground.
When pushing beginning, keeping arm 31 is stretched by spring 32, erects with being rotated counterclockwise.Pushes ball 35 does not contact with blank 10 yet simultaneously.Usually, when there is no frictional resistance between the front end of blank 10 and recipient 3, namely when blank 10 successfully inserts recipient 3, in this case blank 10 is inserted among recipient 3.
But if produce the frictional resistance produced because of the contact with recipient 3 in blank 10 leading section, then keeping arm 31 deasil rotates with following this frictional resistance.If this frictional resistance becomes large, keeping arm 31 deasil rotates, then the roller 54 in the roller 34 of blank holding device 30 and the attached portion of pressure of blank pushing in device 50 becomes a linearity, and blank 10 pushes by blank pushing in device 50.
As mentioned above, when frictional resistance adds, because keeping arm 31, pushes ball 35 and spring 36 link, deasil describe circular arc integratedly so pushes ball 35 and spring 36 become and pushing force be addition of to blank 10 top.The size of load becomes large together with the rotation of keeping arm 31, when the roller 34 of above-mentioned blank holding device 30 and the attached portion of pressure of blank pushing in device 50 roller 54 in a straight line, when namely two rollers become the state simultaneously pushing away blank 10 together, the pushing force produced by pushes ball 35 and spring 36 becomes maximum, from the front end of top pushing blank 10.
What produce pushing force in detail in this figure is pushes ball 35 and spring 36, but also can be roll-type plunger, hydraulic cylinder, cylinder, or such structure of ball-screw by servo motor driven.
In addition, the spring 32 kept keeping arm 31 also can be hydraulic cylinder, cylinder, or such mechanism of ball-screw by servo motor driven.
Fig. 2 (a) ~ Fig. 2 (g) represents the approximate shape of blank pushing in device 50.Blank pushing in device 50 is by roller 54, form with bracket 52 its roller support 53 supported and pushing.As also shown in Fig. 2 (e), the roller 54 as blank pushed section is installed in front end.Blank pushing in device 50, as A-stage as shown in Fig. 2 (g), standby in the bottom in the free roll portion 72 of blank loader, arrive the top in free roll portion 72 of blank loader at blank 10 after, be moved upward by chain drive.
Fig. 2 (c) represents the form of keeping out of the way with device 60 of blank holding device 30.
Keep out of the way and form with part 62 with keeping out of the way with cylinder 61 by keeping out of the way with device 60.
When blank 10 enters the free roll portion 72 of blank loader, blank holding device 30 must be kept out of the way from the path of blank 10, not interfere with blank 10.
Use in the case and keep out of the way with device 60.Keep out of the way and form with part 62 with keeping out of the way with cylinder 61 by keeping out of the way with device 60, driven by cylinder and make blank holding device 30 move to the position of not interfering with blank 10 to the direction at right angle from insertion apparatus axle center.
In addition, because blank holding device 30 moves slidably on guide 40, so after keeping out of the way, even if turn back to original position, position also can not offset.
Fig. 4 (a) represents that blank 10 is pushed the state in the way in recipient 3 by blank pushing in device 50, and Fig. 4 (b) represents that blank 10 is pushed the state finished in recipient 3 by blank pushing in device 50 in addition.No matter in any situation, below blank 10 and recipient 3 below between all there is gap, blank 10 can not damage, nor can produce frictional resistance, is inserted easily in recipient 3.
Carry out describing to the primary position of blank holding device 30 and blank pushing in device 50.Fig. 5 (a) and Fig. 5 (b) represents the primary position of blank holding device 30 and blank pushing in device 50.
So-called primary position, the blank holding device 30 of not interfering with blank 10 when referring to the free roll portion 72 in order to enter blank loader at blank 10 and the position of readiness of blank pushing in device 50.
Blank holding device 30, above the free roll portion 72 of blank loader, become the position of not interfering when blank 10 enters the free roll portion 72 of blank loader, the position of namely having kept out of the way to the right angle orientation in the axle center in the free roll portion 72 of blank loader becomes primary position.Details is illustrated in Fig. 2 (c).
Blank holding device 30 is not owing to having drive source, so when inserting blank 10, pushed away by blank pushing in device 50, but after the insertion of blank 10 terminates, when returning primary position, by being pushed away the hook 30 of blank holding device 30 by the recovery annex 71 be attached on chain, return to primary position.
On the other hand, blank pushing in device 50 is at blank 10 approaching side of blank insertion apparatus, and the below in the free roll portion 72 of blank loader becomes primary position.Blank pushing in device 50 pushes away blank holding device 30 and inserts among recipient 3 by blank 10, but drive source is motor, and returning to primary position is also undertaken by the driving of motor.
Fig. 6 represents the motion flow of mode of the present utility model.
(1) blank 10 is by blank heating device 21 preheating, moves to blank input unit 23.
(2) blank 10 is moved to blank propeller 26 center from blank heating device position by blank transfer device 24.
(3) be in the blank 10 on blank transfer device pallet 23, moved to blank loader 27 by blank propeller 26.
(4) blank propeller 26 retreats.
(5) blank holding device 30 moves from primary position to the center in the free roll portion 72 of blank loader 27.
(6) blank pushing in device 50 comes from the bottom of blank insertion apparatus, advances, until blank 10 contacts with retainer 29 together with blank holding device 30.
(7) blank loader 27 moves to extruder center.
(8) blank pushing in device 50 uses blank holding device 30, pushes blank 10, in recipient 3, insert blank 10.
(9) blank holding device 30 is retreated by the chain drive of blank pushing in device 50, leaves from recipient 3.
(10) blank loader 27 retreats.
(11) blank pushing in device 50 and blank holding device 30 retreat, and turn back to primary position.
Above, blank holding device 30 and blank pushing in device 50 can the situation of movement independently be described, below, carry out describing to the embodiment of the situation that blank holding device 30 is integrated with blank pushing in device 50 one-tenth.
Structure as structure when blank 10 being inserted recipient 3 and the top that pushed blank 10 end by pushes ball 35 and spring 36 is same, but the structure that blank holding device 30 and blank pushing in device 50 are integrated, there is no need for making blank holding device 30 to enter keeping out of the way of keeping out of the way recovery annex 71 with the recovery of device 60 and blank holding device from blank 10.In addition, blank holding device 30 and blank pushing in device 50 have primary position respectively, there is the structure in order to realize required for primary position, but the structure of one does not need them, the position of not interfering with blank 10 in the end in the free roll portion 72 of blank loader becomes primary position.
In addition, the structure having made one may not be the free roll portion 72 of blank loader but the structure as linear guide.
Fig. 8 (a) and Fig. 8 (b) represents the motion flow of mode of the present utility model.
(1) blank 10 is by blank heating device 21 preheating, moves to the position of retainer 41.
(2) not shown blank conveying device clamping blank 10.
(3) not shown blank conveying device rises, and is carried by the central part of blank 10 to the free roll portion 72 of blank loader.
(4) not shown blank conveying device retreats to the position of the primary position of free roll 22.
(5) blank is pushed into retainer 29 by blank pushing in device 70.
(6) extruding terminates, and is moved by the blank 10 of next operation by the machine center of blank loader 27 to extruder.
(7) blank insertion apparatus 70 starts to push blank 10.Now blank holding device 30 automatically acts on.
(8) blank 10 terminates to the insertion in recipient 3.
(9) blank loader 27 retreats.
(10) blank insertion apparatus 70 turns back to primary position.
The utility model, because be above structure, can obtain following effect.
In order to extrude as 1000 be fine aluminium blank, when blank is inserted recipient, material softness, there is viscosity, confining force is acted on lower direction that blank pushes end, by below recipient with blank below contact and create frictional force, but because reduce this frictional force, so blank can not stopped in the way that recipient inserts, extruding running can carried out continuously, causing productive raising.

Claims (9)

1. a blank insertion apparatus, it is the blank insertion apparatus be made up of blank holding device and blank pushing in device, when blank being inserted to the extruding bore being in extruder center by rear loaded type extruder, after delivered blank by blank feedway to extruder center, by pushing away blank end face, blank is inserted in recipient, it is characterized in that
The blank end pushing side is in downward direction pushed and keeps, and makes it relative to the recipient direction freedom of movement of extruder.
2., as the blank insertion apparatus that claim 1 is recorded, it is characterized in that,
Blank insert start time, make to have the blank holding device rotating lever freely and be close to blank Shangdi and push, the frictional force that can and work between blank and recipient correspondingly makes push-on force increase.
3., as the blank insertion apparatus that claim 2 is recorded, it is characterized in that,
Blank holding device has made following structure: the above-below direction that can retrain blank moves to the direction of extrusion unchangeably, and it increases pro rata to the confining force in the lower direction of blank and the load acted on push-on force.
4., as the blank insertion apparatus that claim 1 is recorded, it is characterized in that,
Be separated mode freely with blank pushing in device constitute blank holding device to become, this blank holding device rotatably can push and keep pushing the blank end of side blank end face.
5., as the blank insertion apparatus that claim 1 is recorded, it is characterized in that,
When from the external reception blank of this blank insertion apparatus, blank holding device with blank by mode can keep out of the way to assigned position.
6., as the blank insertion apparatus that claim 1 is recorded, it is characterized in that,
After being terminated to recipient insertion by blank, pushing in device driving chain arranges the device that blank holding device pushes back, and blank holding device can by chain drive action to primary position.
7., as the blank insertion apparatus that claim 1 is recorded, it is characterized in that,
Height below the blank of blank insertion apparatus is relative to being configured in top below recipient a little.
8. a blank insertion apparatus, it is the blank insertion apparatus be made up of blank holding device and blank pushing in device, when blank being inserted to the extruding bore being in extruder center by rear loaded type extruder, after delivered blank by blank feedway to extruder center, by pushing away blank end face, blank is inserted in recipient, it is characterized in that
Blank holding device and blank pushing in device are made one, this blank holding device has the blank holding device rotating lever freely, the blank end pushing side is in downward direction pushed and keeps and make it relative to the recipient direction freedom of movement of extruder, when blank inserts beginning, the frictional force that can and work between blank and recipient correspondingly makes push-on force increase
This blank holding device has made following structure: the above-below direction that can retrain blank moves to the direction of extrusion unchangeably, and the load acted on push-on force is larger, and this blank holding device more increases the confining force in the lower direction of blank.
9., as the blank insertion apparatus that claim 8 is recorded, it is characterized in that,
Height below the blank of blank insertion apparatus is relative to being configured in top below recipient a little.
CN201520110642.7U 2014-02-17 2015-02-15 Blank interpolating arrangement of extruder Expired - Fee Related CN204866883U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-027089 2014-02-17
JP2014027089A JP6221810B2 (en) 2014-02-17 2014-02-17 Billet insertion device for extrusion press

Publications (1)

Publication Number Publication Date
CN204866883U true CN204866883U (en) 2015-12-16

Family

ID=53893394

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520110642.7U Expired - Fee Related CN204866883U (en) 2014-02-17 2015-02-15 Blank interpolating arrangement of extruder

Country Status (2)

Country Link
JP (1) JP6221810B2 (en)
CN (1) CN204866883U (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6834597B2 (en) * 2017-03-02 2021-02-24 宇部興産機械株式会社 Extrusion press cleanout control method
JP7207018B2 (en) * 2019-03-01 2023-01-18 Ubeマシナリー株式会社 Billet supply device and billet supply method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0471717A (en) * 1990-07-13 1992-03-06 Ube Ind Ltd Chucking device for holding cylindrical billet
JP2527715Y2 (en) * 1991-08-15 1997-03-05 石川島播磨重工業株式会社 Manipulator
JP2882564B2 (en) * 1993-12-17 1999-04-12 宇部興産株式会社 Billet insertion device for extrusion press
DE59502111D1 (en) * 1995-05-27 1998-06-10 Sms Schloemann Gmbh Device for loading blocks and, if necessary, pressing disks into lying metal extrusion presses

Also Published As

Publication number Publication date
JP6221810B2 (en) 2017-11-01
JP2015150589A (en) 2015-08-24

Similar Documents

Publication Publication Date Title
CN204866883U (en) Blank interpolating arrangement of extruder
KR20130044424A (en) Ornament chain manufacturing machine and its used ornament chain manufacturing method for scratch removement and process reduction
CN212979351U (en) Die assembly for powder forming press
KR101686807B1 (en) Extrude press molding machine with pusher
KR101069763B1 (en) Apparatus for bending pipe for vehicle
CN204523987U (en) Feed mechanism and be provided with the mould of this feed mechanism
CN103956861B (en) The windmill sheet at micro-motor rotor two ends and commutator full automatic assembly machine
CN103331901B (en) Variable-pitch device of bottle blowing machine
CN102615240A (en) Rivet forming machine
CN105722614B (en) Direct double-lift extruder
CN103857515B (en) Injection moulding apparatus
CN207447009U (en) A kind of chair headrest pull rod production equipment
CN102274904B (en) Pairing machine for inner container of water heater
CN104190734A (en) Lead ingot extruding machine
JP2016163902A (en) Hybrid extrusion press
CN104889191B (en) A kind of automatic sending and taking material device of high-efficiency compact
CN107471744A (en) A kind of handle assembling components machine of packaging bag
JP6516383B2 (en) Powder molding press apparatus and powder molding press system
CN206028603U (en) Automatic make -up machine of buckling of clothes hanger
CN204148411U (en) Vertical roll complete machine
CN104525782B (en) Vertical roll complete machine and method of work thereof
JP3766282B2 (en) Multistage forging machine
CN208178869U (en) A kind of steel ball pressing machine of Universal wheel for luggage
CN102285077A (en) De-molding mechanism for plastic chair mold
CN202527651U (en) Rivet forming machine

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151216

Termination date: 20190215