CN209109948U - A kind of pipe fitting punch die - Google Patents
A kind of pipe fitting punch die Download PDFInfo
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- CN209109948U CN209109948U CN201821768217.7U CN201821768217U CN209109948U CN 209109948 U CN209109948 U CN 209109948U CN 201821768217 U CN201821768217 U CN 201821768217U CN 209109948 U CN209109948 U CN 209109948U
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- pipe fitting
- sliding block
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- groove
- plug
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Abstract
The utility model provides a kind of pipe fitting punch die, from left to right the type chamber to set pipe fitting trough, the lower die including mandrel component and slide block assembly, and top is from left to right successively to set punch-pin, the upper mold of the shovel base of briquetting and wedge shape；Mandrel component includes the first sliding block that lower part sets the second nitrogen gas spring, and middle part sets plug, and via hole is set on plug for being fixedly connected with the first cavity plate that upper center sets the first groove；Slide block assembly includes the take-up housing for setting the second groove, and mandrel component and the second groove are cooperatively connected, and the take-up housing two sides bottom parallel with plug axis sets the first nitrogen gas spring, and the side surface upper part vertical with plug axis sets wedge-shaped second sliding block；Pipe fitting trough end sets the second cavity plate that upper end sets third groove；Punch-pin matches with the first groove, and shovel base is connect by wedge surface with the second sliding block wedge surface；Type chamber is located at the free end of plug, and bottom end and the third groove of the first cavity plate match.The mold can guarantee the requirement of product disposably to pipe fitting punching simultaneously up and down.
Description
Technical field
The utility model belongs to stamping die technology, and in particular to a kind of pipe fitting punch die.
Background technique
In automobile rear sub-frame pipe beam, the product structure of an aperture below a macropore above is often had, is used
In welding column, just there are two coaxial holes for automobile rear sub-frame front-axle beam, and the pores concentricity is more demanding, if using tiltedly carving
Two side punchings will cause the problems such as cavity plate wall thickness is relatively thin, and intensity is inadequate, in addition, two bore dia gaps are larger, the punching on both sides
Power is uneven, is not easy to guarantee the concentricity in two holes, if not only needing carry out using the method for rushing another side again on one side is punched more
Clamped one time, and precision is worse, and efficiency is lower.
Summary of the invention
In view of the above-mentioned problems, can disposably be carried out up and down to pipe fitting same the present invention provides a kind of pipe fitting punch die
Shi Chongkong can be good at the requirement for guaranteeing the product parts of the type.
The technical problems to be solved in the utility model is realized using following technical scheme:
A kind of pipe fitting punch die has been set gradually from left to right type chamber and lower die, has been provided with above type chamber and lower die
Mould, the upper mold have been set gradually from left to right punch-pin, briquetting and shovel base, and the shovel base is wedge shape；The lower die includes plug
Component and slide block assembly, the mandrel component include the first sliding block, and first sliding block lower part is equipped with the second nitrogen gas spring, described
It is equipped with plug in the middle part of first sliding block, via hole is set on the plug, the via hole is fixedly connected with the first cavity plate, and described first is recessed
Mould upper center is equipped with the first groove；The slide block assembly includes the take-up housing equipped with the second groove, second groove and institute
Mandrel component mating connection is stated, the mandrel component can move up and down in second groove, the take-up housing and institute
It states the parallel two sides bottom of plug axis and is equipped with the first nitrogen gas spring, on the take-up housing side vertical with plug axis
Portion is equipped with the second sliding block of wedge shape；The type chamber be equipped with pipe fitting trough, the pipe fitting trough end be equipped with the second cavity plate, described second
Cavity plate upper end is equipped with third groove；The punch-pin being arranged in the upper mold and the first groove of the upper end of the first cavity plate match, institute
The shovel base being arranged in upper mold is stated to connect by wedge surface with the second sliding block wedge surface；The type chamber is located at the freedom of the plug
It holds, the third groove of the bottom end and second cavity plate upper end of the first cavity plate being arranged on the plug matches.
Mold after assembling mold and having debugged interval, is mounted on oil pressure by the pipe fitting punch die of the utility model
On machine, the pipe fitting processed will be needed to be placed in the pipe fitting trough of type chamber, subsequent hydraulic press downlink pressure, with the downlink of upper mold,
It shovels base to connect by the wedge surface of wedge surface and the second sliding block, to push lower die mobile to pipe fitting direction, plug is made to enter pipe
In part, third groove corresponding of the second cavity plate upper end being arranged on the first cavity plate bottom end and type chamber end to be arranged on plug
Timing, the contact surface for shoveling base and the second sliding block become vertical plane from wedge surface, and upper mold continues traveling downwardly, and shovel base will not again play lower die and push away
Movement is used, and punch-pin, briquetting continues traveling downwardly, and punch-pin comes downwards to tube surface and is punched out to pipe fitting, the second nitrogen gas spring support the
The blanking pressure that one sliding block and the first cavity plate bear punch-pin completes first time punching, and after the completion of first time punching, upper mold is continued traveling downwardly,
The briquetting being arranged in upper mold pushes down the first slide block down, and the first sliding block drives the first cavity plate downlink, the first cavity plate bottom end contacting pipe
When part, second of punching is carried out to pipe fitting using the first cavity plate bottom end as piercing punch, the second cavity plate bears the first cavity plate bottom end
Blanking pressure, complete second of punching.Twice after the completion of punching, hydraulic press uplink, the second sliding block remains motionless, and the first cavity plate exists
It is detached under the action of second nitrogen gas spring in the hole of second of punching press, continues uplink, shovel second on the wedge surface and take-up housing of base
The wedge surface of sliding block contacts, and take-up housing moves under the action of the first nitrogen gas spring far from pipe fitting, and the plug in mandrel component is moved back
Out in pipe fitting, entire circulation action is completed since then.The mold can carry out punching simultaneously up and down on a kind of pipe fitting, and complete
Two holes are coaxial up and down for pipe fitting, can be good at the requirement for guaranteeing the product parts of the type, it is not of uniform size to solve two side blows
The hole of sample is not easy coaxial problem, and the mold, using simply being easy to grasp, mold manufacture is easy, for manufacturing inexpensive product
Dimensional accuracy and shape be easily guaranteed that, easy-to-operate.
Preferably, it is provided with guide post in the middle part of the briquetting, is provided in the middle part of first sliding block and cooperates with the guide post
Guide sleeve.Guide post and guide sleeve mating reaction prevent the first sliding block mobile toward other directions when downlink, to play correcting
The effect of first slide block down movement, improves the precision of punching.
Preferably, the upper mold is provided with supporting block, and the supporting block is between the punch-pin and briquetting.
Using above-mentioned preferred embodiment, supporting block is set between punch-pin and briquetting, the work for increasing mandril strength can be played
With because pipe fitting can generate reaction force to plug and will result in close since plug is a cantilever when rushing the second hole
Active force at first slide position increases, and therefore, supporting block is pressed on plug can divide at the first slide position
A part of power is solved, plays the role of enhancing plug.
Preferably, the punch-pin lower part is provided with pressure plate.
Using above-mentioned preferred embodiment, the pressure plate of punch-pin lower part is for pushing down tube surface, after the completion of preventing pressure hole, hole
It turns up after demoulding on periphery.
Preferably, first sliding block lower part is equipped with cushion block, and the cushion block, which is provided with, allows passing through for the second nitrogen gas spring
Via hole.
Using above-mentioned preferred embodiment, cushion block setting prevents the excessive downlink of mandrel component, damage second in the first sliding block lower part
Nitrogen gas spring.
Preferably, first sliding block side is provided with guide plate.
Using above-mentioned preferred embodiment, the guide plate is placed between the second groove of first sliding block and the take-up housing, is prevented
Only the first sliding block moves in downward movement along other directions, plays guiding role, guarantees the precision of punching.
Preferably, through-hole is equipped in the middle part of first cavity plate.
Using above-mentioned preferred embodiment, through-hole is set in the middle part of the first cavity plate, the waste material for rushing the first hole can be made by through-hole
Fall out pipe fitting outer.
Detailed description of the invention
The structural schematic diagram of Fig. 1 the utility model；
Section A-A figure in Fig. 2 Fig. 1；
Fig. 3 upper die structure figure；
Fig. 4 mandrel component structure chart；
Fig. 5 mandrel component structure top view；
Fig. 6 slide block assembly structure chart；
Fig. 7 cavity structure figure.
In figure, 1- punch-pin, 2- briquetting, 3- supporting block, 4- pressure plate, the first sliding block of 5-, 6- plug, the first cavity plate of 7-, 8-
Second cavity plate, 9- backing plate, the first nitrogen gas spring of 10-, the first groove of 11-, 12- guide post.13- shovel base, 14- guide sleeve, 15- guide plate,
The second groove of 16-, the second sliding block of 17-, 18- third groove, the second nitrogen gas spring of 19-, 20- type chamber, 21- upper mold, 22- sliding block
Seat, 23- pipe fitting trough, 24- pipe fitting；
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to the accompanying drawing and specifically
The utility model is described in detail in embodiment.It should be appreciated that specific embodiment described herein is only used to explain this
Utility model is not used to limit the utility model.
Embodiment 1
A kind of pipe fitting punch die has been set gradually from left to right type chamber 20 and lower die, type chamber 20 as shown in Fig.1 and Fig.2
Lower die top is provided with upper mold 21, the upper mold 21 has been set gradually from left to right punch-pin 1, briquetting 2 and shovel base 13, the shovel
Base 13 is wedge shape, as shown in Figure 3；The punch-pin 1 is stamping tool well known to those skilled in the art, according to need to process pipe fitting 24
Pore size and shape select the specification of corresponding punch-pin 1, the structure no longer to punch-pin 1 and specification carry out detailed explain here
It states；The lower die includes mandrel component such as Fig. 4, shown in Fig. 5 and slide block assembly, as shown in fig. 6, the mandrel component such as Fig. 4,
Shown in Fig. 5, including the first sliding block 5,5 lower part of the first sliding block are equipped with the second nitrogen gas spring 19, set in the middle part of first sliding block 5
There is plug 6, via hole is set on the plug 6, the via hole is fixedly connected with the first cavity plate 7, i.e., was fixed on the first cavity plate 7
Kong Zhong prevents the first cavity plate 7 from crossing aerial sliding, and 7 upper center of the first cavity plate is equipped with the first groove 11, as shown in Figure 1；
The slide block assembly is as shown in fig. 6, include the take-up housing 22 equipped with the second groove 16, second groove 16 and the core group
Part is cooperatively connected, and the mandrel component can move up and down in second groove 16, the take-up housing 22 and the core
The parallel two sides bottom of 6 axis of stick is equipped with the first nitrogen gas spring 10, the take-up housing 22 side vertical with 6 axis of plug
Top is equipped with the second sliding block 17 of wedge shape；The type chamber 20 is equipped with pipe fitting trough 23, as shown in fig. 7, the pipe fitting trough 23 is used for
The pipe fitting 24 of punching required for placing, 23 end of pipe fitting trough are equipped with the second cavity plate 8, and 8 upper end of the second cavity plate is equipped with the
Three grooves 18；As shown in Figure 1,11 phase of the first groove of the punch-pin 1 being arranged in the upper mold 21 and the upper end of the first cavity plate 7
Match, the shovel base 13 that the upper mold 1 is arranged is connect by wedge surface with 17 wedge surface of the second sliding block；The type chamber 20 is located at the core
The free end of stick 6,18 phase of third groove of the bottom end and 8 upper end of the second cavity plate of the first cavity plate 7 being arranged on the plug 6
Matching.First groove 11 of the upper center setting of first cavity plate 7 carries out first time punching to pipe fitting with the punch-pin 1,
The punch-pin 1 is corresponding with the first groove 11 that 7 upper end of the first cavity plate is arranged as formed punch, therefore, by the first cavity plate 7
Die cavity of the upper end as first time punching, therefore 11 specification of the first groove is determined according to the size and shape of punch-pin 1；First
7 lower end of cavity plate is corresponding with the third groove 18 of 8 upper end of the second cavity plate as the formed punch of second of punching, therefore, second
The upper end of cavity plate 8 is as second of die cavity, therefore, according to carry out second of punching hole size and shape so as to
Determine the specification of third groove 18 on 8 upper end of 7 bottom of the first cavity plate and the second cavity plate.First cavity plate 7 of the utility model it is upper
End is as the punching hole type chamber of first time punching and the formed punch of second of punching, it may therefore be assured that pipe fitting 24 is two above and below carrying out
When secondary punching, upper and lower two hole is coaxial.
The pipe fitting punch die course of work of the utility model is as follows, after mold is assembled and has debugged interval, by mould
Tool is mounted on hydraulic press, the pipe fitting 24 processed will be needed to be placed in the pipe fitting trough 23 of type chamber 20, subsequent hydraulic press downlink is applied
Pressure, 21 downlink of upper mold, shovel base 13 is connected by the wedge surface of wedge surface and the second sliding block 17, to push lower die to pipe fitting 24
Direction is mobile, enters plug 6 in pipe fitting 24, the bottom end of the first cavity plate 7 to be arranged on plug 6 and the second of 20 end of type chamber
When third 18 Corresponding matching of groove of 8 upper end of cavity plate, the contact surface for shoveling base 13 and the second sliding block 5 becomes vertical plane from wedge surface, on
Mould 21 continues traveling downwardly, and shovel base 13 will not again play a driving role to lower die, and punch-pin 1, briquetting 2 continues traveling downwardly, and punch-pin 1 comes downwards to pipe
Part surface is then punched out pipe fitting 24, and the second nitrogen gas spring 19 supports the first sliding block 5 and the first cavity plate 7 to bear punch-pin 1
Blanking pressure completes first time punching, and after the completion of first time punching, upper mold 21 is continued traveling downwardly, and the briquetting 2 being arranged in upper mold 21 is pushed down
First sliding block 5 starts downlink, and the first sliding block 5 drives 7 downlink of the first cavity plate, when 7 bottom end of the first cavity plate contacts pipe fitting, by first
7 bottom end of cavity plate carries out second of punching to pipe fitting 24 as piercing punch, and the second cavity plate 8 bears the punching of 7 bottom end of the first cavity plate
Power completes second of punching.Twice after the completion of punching, hydraulic press uplink, the second sliding block 17 remains motionless, and the first cavity plate 7 is
It is detached from the hole of second of punching press under the action of two nitrogen gas springs 19, continues uplink, shovel the on the wedge surface and take-up housing of base 13
The wedge surface of two sliding blocks 17 contacts, and take-up housing 22 moves under the action of the first nitrogen gas spring 10 far from pipe fitting 24, by mandrel component
In plug 6 exit in pipe fitting, entire circulation action is completed since then.The punching die of the utility model is relative to two sides from pipe fitting
Both sides punching simultaneously is able to carry out punching simultaneously up and down, and upper lower opening is coaxial, has a good punching precision, and two sides from
The punching simultaneously of pipe fitting both sides, not of uniform size due to two holes of pipe fitting, blanking pressure is different, and the power imbalance of two sides may cause
The swing of plug, punching precision are bad.And the punching die of the utility model is disposably to carry out punching up and down to pipe fitting,
Although and punching in two times does not need other counter-punching die tool and is replaced after the completion of first time punching, can be disposable
Punching twice up and down is completed, simultaneously as the first cavity plate 7 in the mold is as the punching hole type chamber of first time punching and second
The formed punch of punching, therefore guarantee pipe fitting when carrying out punching twice up and down, upper and lower two hole is coaxial.Therefore the mold of the utility model
The requirement that can be good at guaranteeing the product parts of the type, solves two side blows hole in different size and is not easy coaxial ask
Topic, and the mold, using simply being easy to grasp, mold manufacture is easy, and manufactures inexpensive product size precision and shape is easy to protect
Card, easy-to-operate.
Embodiment 2
Based on the above embodiment 1, such as Fig. 1, shown in Fig. 5, guide post 12, first sliding block 5 are provided in the middle part of the briquetting 2
Middle part be provided with the guide post 12 cooperation guide sleeve 14.With the downlink of upper mold, 12 downlink of guide post, the guide post 12 of downlink into
Enter in guide sleeve 14, with 14 mating reaction of guide sleeve, prevents the first sliding block 5 mobile toward other directions when downlink, to play
The effect of 5 downward movement of the first sliding block of correcting, improves the precision of punching.Guide post 12 generally selects cylinder, but can also select
With other suitable shapes, but guide post 12 has to match with guide sleeve 14, to prevent guide post 12 in guide sleeve 14 to it
His direction is mobile, can just prevent the first sliding block 5 of middle part setting guide sleeve 14 mobile to other directions during downlink.This implementation
In example, other contents not described are same as the previously described embodiments, and details are not described herein again.
Embodiment 3
Based on the above embodiment 1, such as Fig. 1, shown in Fig. 3, the upper mold 21 is provided with supporting block 3, and the supporting block 3 is located at
Between the punch-pin 1 and briquetting 2.Supporting block 3 is set between punch-pin 1 and briquetting 2, the work for increasing by 6 intensity of plug can be played
With because the bottom of the first cavity plate 7 is as formed punch, and the first cavity plate 7 is placed on the plug 6, described to work as when rushing the second hole
When first cavity plate, 7 bottom end is punched out pipe fitting 24, pipe fitting 24 can generate reaction force to plug 6, since plug 6 is one outstanding
Arm will result in the active force at 7 position of the first sliding block and increase, therefore, supporting block 3 is pressed on plug 6 close to first
The reaction force that a part of pipe fitting 24 generates plug 6 can be decomposed at 5 position of sliding block, play the role of enhancing plug 6.Branch
3 preferred cylindricality of bracer, other suitable shapes can also be selected.In the present embodiment, other contents not described and above-mentioned implementation
Example is identical, and details are not described herein again.
Embodiment 4
Based on the above embodiment 1, such as Fig. 1, shown in Fig. 3, the lower part Fig. 1 is equipped with pressure plate 4.The binder of 1 lower part of punch-pin
Plate 4 is for pushing down 24 surface of pipe fitting, and after the completion of preventing pressure hole, the periphery in hole is turned up after demoulding.4 preferred cylindricality of pressure plate, because
It is cylindricality for pipe fitting 24, can prevents pressure plate 4 from extruding trace to pipe fitting 24, other suitable shapes can also be selected, this reality
It applies in example, other contents not described are same as the previously described embodiments, and details are not described herein again.
Embodiment 5
Based on the above embodiment 1, as shown in Figure 1,5 lower part of the first sliding block is equipped with cushion block 9, the cushion block 9 is provided with
Allow the via hole of the second nitrogen gas spring 19 passed through.Cushion block 9 is arranged in 5 lower part of the first sliding block, prevents the excessive downlink of mandrel component,
More than the tolerance interval of the second nitrogen gas spring 19, thus the second nitrogen gas spring 19 of damage.In the present embodiment, the cushion block 9 is excellent
Form slection shape be it is consistent with the shape size of 5 bottom of the first sliding block, when preventing the first 5 downlink of sliding block, the pressure that backing plate 9 is born is uneven
It is even, cause the first sliding block 5 to tilt, certainly, other suitable 9 shapes of cushion block can also be selected.Other contents not described with it is upper
It is identical to state embodiment, details are not described herein again.
Embodiment 6
Based on the above embodiment 1, as shown in Fig.1 and Fig.2,5 side of the first sliding block is provided with guide plate 15.It is described to lead
Plate 15 is placed between first sliding block 5 and the second groove 16 of the take-up housing 22, for filling the first sliding block 5 and take-up housing
Gap between 22 the second groove 16, prevents the first sliding block 5 from moving in downward movement along other directions, plays guiding and makees
With guaranteeing the precision of punching.The shapes and sizes of the guide plate 15 are according to the first sliding block 5 and second 22 gap of groove the case where institute
It is fixed.Other contents not described are same as the previously described embodiments, and details are not described herein again.
Embodiment 7
Based on the above embodiment 1, through-hole is equipped in the middle part of first cavity plate 7, and the waste material for rushing the first hole can be made by logical
Hole falls out 24 outside of pipe fitting, facilitates the processing of waste material.Other contents not described are same as the previously described embodiments, no longer superfluous herein
It states.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, and should refer to
Out, any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc. should all include
It is within the protection scope of the utility model.
Claims (7)
1. a kind of pipe fitting punch die has been set gradually from left to right type chamber and lower die, has been provided with upper mold above type chamber and lower die,
It is characterized in that, the upper mold has been set gradually from left to right punch-pin, briquetting and shovel base, the shovel base is wedge shape；The lower die
Including mandrel component and slide block assembly, the mandrel component includes the first sliding block, and first sliding block lower part is equipped with the second nitrogen
Spring, the first sliding block middle part are equipped with plug, via hole are arranged on the plug, and the via hole is fixedly connected with the first cavity plate,
The first cavity plate upper center is equipped with the first groove；The slide block assembly includes the take-up housing equipped with the second groove, and described the
Two grooves and the mandrel component are cooperatively connected, and the mandrel component can move up and down in second groove, described
The take-up housing two sides bottom parallel with the plug axis is equipped with the first nitrogen gas spring, and the take-up housing and plug axis hang down
Straight side surface upper part is equipped with the second sliding block of wedge shape；The type chamber is equipped with pipe fitting trough, and it is recessed that the pipe fitting trough end is equipped with second
Mould, second cavity plate upper end are equipped with third groove；The first of the punch-pin being arranged in the upper mold and the upper end of the first cavity plate is recessed
Slot matches, and the shovel base being arranged in the upper mold is connect by wedge surface with the second sliding block wedge surface；The type chamber is located at described
The free end of plug, the third groove phase of the bottom end and second cavity plate upper end of the first cavity plate being arranged on the plug
Match.
2. a kind of pipe fitting punch die according to claim 1, which is characterized in that it is provided with guide post in the middle part of the briquetting,
The guide sleeve with guide post cooperation is provided in the middle part of first sliding block.
3. a kind of pipe fitting punch die according to claim 1, which is characterized in that the upper mold is provided with supporting block, institute
Supporting block is stated between the punch-pin and the briquetting.
4. a kind of pipe fitting punch die according to claim 1, which is characterized in that the punch-pin lower part is equipped with pressure plate.
5. a kind of pipe fitting punch die according to claim 1, which is characterized in that first sliding block lower part is equipped with pad
Block is provided with the via hole for allowing the second nitrogen gas spring to pass through on the cushion block.
6. a kind of pipe fitting punch die according to claim 1, which is characterized in that first sliding block side is provided with
Guide plate.
7. a kind of pipe fitting punch die according to claim 1, which is characterized in that be equipped in the middle part of first cavity plate logical
Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821768217.7U CN209109948U (en) | 2018-10-29 | 2018-10-29 | A kind of pipe fitting punch die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821768217.7U CN209109948U (en) | 2018-10-29 | 2018-10-29 | A kind of pipe fitting punch die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209109948U true CN209109948U (en) | 2019-07-16 |
Family
ID=67202880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821768217.7U Active CN209109948U (en) | 2018-10-29 | 2018-10-29 | A kind of pipe fitting punch die |
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| Country | Link |
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| CN (1) | CN209109948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111545655A (en) * | 2020-06-24 | 2020-08-18 | 深圳市国祥鑫精密模具有限公司 | Opening expanding die for heat treatment of electronic connector contact |
-
2018
- 2018-10-29 CN CN201821768217.7U patent/CN209109948U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111545655A (en) * | 2020-06-24 | 2020-08-18 | 深圳市国祥鑫精密模具有限公司 | Opening expanding die for heat treatment of electronic connector contact |
| CN111545655B (en) * | 2020-06-24 | 2021-12-14 | 深圳市国祥鑫精密模具有限公司 | Opening expanding die for heat treatment of electronic connector contact |
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| CP03 | "change of name, title or address" |
Address after: Shanchuan community, Jine street, Longchang City, Neijiang City, Sichuan Province Patentee after: Longchang Shanchuan Machinery Co.,Ltd. Address before: Shanchuan Town, Longchang County, Neijiang City, Sichuan Province Patentee before: LONGCHANG SHANCHUAN PRECISION WELDED TUBE Co.,Ltd. |
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| CP03 | "change of name, title or address" | ||
| CP02 | Change in the address of a patent holder |
Address after: Shanchuan community, Jine street, Longchang City, Neijiang City, Sichuan Province Patentee after: Longchang Shanchuan Machinery Co.,Ltd. Address before: Shanchuan community, Jine street, Longchang City, Neijiang City, Sichuan Province Patentee before: Longchang Shanchuan Machinery Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |