CN208894880U - Lateral compression molding die, the molding machine with non-straight-through indent tooth form - Google Patents
Lateral compression molding die, the molding machine with non-straight-through indent tooth form Download PDFInfo
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- CN208894880U CN208894880U CN201821353069.2U CN201821353069U CN208894880U CN 208894880 U CN208894880 U CN 208894880U CN 201821353069 U CN201821353069 U CN 201821353069U CN 208894880 U CN208894880 U CN 208894880U
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- voussoir
- mandrel
- tooth form
- retainer
- die
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- 238000000748 compression moulding Methods 0.000 title claims abstract description 37
- 238000000465 moulding Methods 0.000 title claims abstract description 18
- 238000007493 shaping process Methods 0.000 claims abstract description 51
- 238000003780 insertion Methods 0.000 claims description 11
- 230000037431 insertion Effects 0.000 claims description 11
- 241000826860 Trapezium Species 0.000 claims description 10
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000009827 uniform distribution Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 20
- 238000001125 extrusion Methods 0.000 abstract description 9
- 230000006835 compression Effects 0.000 abstract description 7
- 238000007906 compression Methods 0.000 abstract description 7
- 239000002184 metal Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model discloses lateral compression molding dies, molding machine and method with non-straight-through indent tooth form, mold includes retainer, voussoir and spring, retainer side wall upper part is equipped with the voussoir pilot hole of circular array distribution, lower part is equipped with the first boss of circular array distribution, voussoir has the vertical plane and second boss for forming, both ends of the spring is separately fixed in first boss and second boss, vertical plane can protrude into retainer inner cavity when voussoir stress, and vertical plane matches with target tooth form.Device includes above-mentioned mold and inclined wedge, mandrel and shaping terrace die, inclined wedge makes voussoir radial motion, voussoir and mandrel shaped segment cooperate forms indent tooth form on blank, forms near closed hollow ring with mandrel, extrusion molding punch-pin and retainer after shaping terrace die downlink, guarantees the forming accuracy of tooth form.Technique is that axial movement is converted to radial compression movement on common stamping equipment using the utility model mold and device, realizes effective molding of indent tooth form.
Description
Technical field
The utility model relates to the field of metal processing, the specifically non-straight-through indent tooth of lateral compression molding die, forming belt
The device and method of shape.
Background technique
The forming of cylindrical member or cup shell generallys use Sheet Metal Forming Technology to complete, but among cylindrical member or cup shell side wall
Part is when having tooth-shape structure (as shown in Figure 1), due in cylindrical member or cup shell punching course, the most edge of the direction of motion of mold
Axis direction, and the direction of motion needed for shaped side walls tooth is then that radially, thus common deep-drawing technique is difficult to tooth-shape structure
It is formed.Forming for this kind of tooth form can be realized using Grob technique, but the process forming efficiency is lower, and difficult
To guarantee the dimensional accuracy of the single tooth of forming end；Common upsetting squeeze combined shaping can be used for shaping the tooth-shape structure of through type,
It is not used to the forming of indent tooth form.
Utility model content
The utility model is difficult to use in non-through type cylindrical member or cup shell side wall tooth form for existing common Sheet Metal Forming Technology
This stamping problem, the device and method of a kind of lateral compression molding die, the non-straight-through indent tooth form of forming belt is provided,
Axial movement can be converted into radial compression movement on common stamping equipment, to realize the valid shaping of indent tooth form.
A kind of lateral compression molding die provided by the utility model, it is characterized in that including the retainer of annular, voussoir
And spring, retainer side wall upper part annular array be equipped with voussoir pilot hole, lower annular array be equipped with first boss, voussoir be by
Right-angled trapezium block, square and second boss are constituted, and the square upper end is fixedly connected with the long bottom surface of right-angled trapezium block, lower end and
Second boss is fixedly connected, and the shape of the horizontal cross-section of one end vertical plane of the voussoir is isosceles trapezoid, so that voussoir hangs down
It faces extrusion billet directly and forms indent tooth form, the arc-shaped face in square surface of other end inclined-plane lower part, the voussoir is actively inserted in
In voussoir pilot hole, outwardly, vertical plane is towards retainer center, the spring one end and first boss on right-angled trapezium block inclined-plane
It is fixedly connected, the other end is fixedly connected with second boss.
Fall acute angle or rounded corner respectively for the junction of the vertical plane of the voussoir and the junction of upper surface and lower end surface.
The utility model provides a kind of molding machine of non-straight-through indent tooth form of band, including upper die holder and lower die holder, described
Upper die holder lower end is equipped with upper lifting power driving device, further includes inclined wedge, mandrel, shaping terrace die and above-mentioned lateral compression shaping mould
Tool,
The upper lifting power driving device include lateral compression molding die lifting device, shaping terrace die lifting device and
Inclined wedge lifting device,
The shaping terrace die, inclined wedge, lateral compression molding die and mandrel axle center on the same axis, the shaping is convex
Mould upper end is fixedly connected with shaping terrace die lifting device, and lower end is equipped with insertion section,
The inclined wedge upper end is fixedly connected with inclined wedge lifting device, and the inner hole of the inclined wedge is from top to bottom sequentially coaxially equipped with
The cylinder hole section and tubaeform hole section being connected,
Retainer upper end in the lateral compression shaping dies is fixedly connected with lateral compression molding die lifting device,
The mandrel is located at below shaping terrace die, and lower end is fixedly connected with lower die holder, mandrel top circumference uniform distribution
Profiled section equipped with target indent tooth form, the profiled section are extended axially downward along mandrel upper surface, the mandrel upper end center
Equipped with positioning jack, the mandrel and the retainer inner hole clearance fit, the mesh of the vertical plane and mandrel side wall of the voussoir
The corresponding cooperation of indent tooth form is marked, the insertion section is matched with positioning jack.
The upper lifting power driving device include lateral compression molding die lifting device, shaping terrace die lifting device and
Fluid cylinder or cylinder is respectively adopted in inclined wedge lifting device.
The utility model provides a kind of forming method of non-straight-through indent tooth form of band, it is characterized in that the following steps are included:
First step: pair of the indent tooth form of the voussoir and mandrel side wall in equipment in lateral compression molding die is first adjusted
Answer position；
The second step: by sheet metal stretching and carrying out the bottom punching bottomless and flanged cask mould of acquisition or cup shell blank,
And blank is placed on mandrel, the formation zone of indent tooth form to be processed among blank side wall is corresponded into the indent tooth form of mandrel
Shaped segment, and position；
The third step: lateral compression molding die lifting device drive mold for extruding and forming moves axially to the indent of blank
Tooth forming stops behind area；
The fourth step: shaping terrace die lifting device drives shaping terrace die to move down, and makes shaping terrace die insertion section and mandrel
The positioning jack of upper end, which matches, to be plugged and fixed, and guarantees the verticality of mandrel during the work time；Meanwhile inclined wedge lifting device
Inclined wedge is driven vertically to move down, when the contact of incline plane of the voussoir in the tubaeform hole section of inclined wedge and retainer circumference, inclined wedge starts
It squeezes and pushes away voussoir and continue to move down along axial direction along the sliding of the inclined-plane of voussoir, tubaeform hole section, which is squeezed, to be pushed away voussoir and make voussoir along retainer
Voussoir pilot hole the profiled section that blank is pressed to the indent tooth form of mandrel side wall is radially moved to retainer, at this point, wedge
The spring of block lower end is squeezed by second boss and pushes away and gather to first boss, when inclined wedge tubaeform hole section and voussoir inclined-plane from
Open, and the arcwall face of the square of the voussoir of the cylinder hole section and retainer of inclined wedge come into contact with to completely attach to when, voussoir inner end
Vertical plane got into the indent tooth form of mandrel completely, the indent tooth form of the indent tooth form shaping area of blank center side wall is complete
Full extrusion forming；
5th process: inclined wedge lifting device drives inclined wedge to stop declining and moves backward reset, shaping terrace die lifting device
Shaping terrace die is driven to move up reset, the wedge when shaping terrace die and inclined wedge disengaging lateral compression molding die, on retainer
Block removes the indent tooth form profiled section of mandrel under spring tension, and lateral compression molding die lifting device can drive
It is moved on lateral compression shaping dies above blank, takes out the blank that the side wall processed has indent tooth form.
The beneficial effects of the utility model are: lateral compression molding die forms interior concave tooth using multiple voussoir extrusion billets
Shape, position voussoir using retainer, it can be achieved that voussoir is in radial self-movement, in conjunction with target indent tooth form
Mandrel and shaping terrace die can realize effective molding of cylindrical member or cup shell side wall tooth form；After the completion of molding, spring knot is utilized
Structure can realize the return of voussoir, be convenient for subsequent taking-up forming part.The utility model moulding process utilizes the utility model mold,
In conjunction with common Sheet Metal Forming Technology, axial movement is converted into radial compression movement on common stamping equipment, to realize indent
Effective molding of tooth form.
Detailed description of the invention
Part drawing of Fig. 1 typical sidewall part with indent tooth form.
Fig. 2 blank schematic diagram.
Fig. 3 the utility model lateral compression forming die structure schematic diagram.
Fig. 4 is A-A cross-sectional view in Fig. 3.
Fig. 5 is enlarged drawing at B2 in Fig. 4.
The structural schematic diagram of Fig. 6 retainer.
Fig. 7 is B-B cross-sectional view in Fig. 6.
The forming device structure schematic diagram of the non-straight-through indent tooth form of Fig. 8 the utility model band.
Fig. 9 is C-C cross-sectional view in Fig. 8.
Figure 10 is the molding machine closed state structural schematic diagram with non-straight-through indent tooth form.
Figure 11 is D-D cross-sectional view in Figure 10.
Figure 12 mandrel cross-sectional view.
In figure, 1 lateral compression molding die, 11 retainers, 111 voussoir pilot holes, 112 first boss, 113 retainers
Inner cavity, 12 voussoirs, 121 vertical planes, 122 second boss, 123 right-angled trapezium blocks, 124 squares, 13 springs, 2 mandrels, 21 moldings
Section, 22 limiting sections, 23 positioning jack, 3 inclined wedge, 31 tubaeform hole sections, 32 cylinder hole sections, 4 shaping terrace dies, 41 insertion sections, 5 bases
Material, 51 flanges.
Specific embodiment
Below to elaborating with attached drawing to the utility model in conjunction with the embodiments, the present embodiment is with utility model technical side
Premised on case, give detailed implementation method and specific operation process, but the protection scope of the utility model be not limited to it is following
Embodiment.
The utility model is the forming method and molding die and molding machine of a kind of non-straight-through indent tooth-shape structure of band, this
For the forming process of embodiment part shown in Fig. 1, the utility model mold and the effect in part processing is described in detail.
As shown in Fig. 3-Fig. 7, the utility model lateral compression molding die 1, retainer 11,12 and of voussoir including annular
Spring 13,11 side wall upper part annular array of retainer are equipped with voussoir and are oriented to 111 holes, and lower annular array is equipped with first boss 112,
Voussoir 12 is made of right-angled trapezium block 123, square 124 and second boss 122,124 upper end of square and right-angled trapezium block
123 long bottom surface is fixedly connected, and lower end is fixedly connected with second boss 122, the level of one end vertical plane 121 of the voussoir 12
The shape in section is isosceles trapezoid, so that 121 extrusion billet 5 of vertical plane of voussoir 12 forms indent tooth form, under other end inclined-plane
The arc-shaped face in 124 surface of square in portion, the voussoir 12 are actively inserted in voussoir and are oriented in 111 holes, and right-angled trapezium block 123 is oblique
Face outwardly, vertical plane 121 is fixedly connected towards 11 center of retainer, described 13 one end of spring with first boss 112, the other end with
Second boss 122 is fixedly connected.Distinguish the junction of the vertical plane 121 of the voussoir 12 and the junction of upper surface and lower end surface
Acute angle or rounded corner form the transition face at inner concave gear both ends in extrusion forming.When being formed to blank 5, blank 5
Profiled section 21 is located at retainer inner cavity 113, has gap between retainer 11 and blank 5, and extruded voussoir 12 is to retainer
Inner cavity 113 is mobile, radially extrusion billet 5, the editing objective tooth on blank 5.
The utility model forms the device with non-straight-through indent tooth form, including upper die holder and lower die holder, under the upper die holder
End is equipped with upper lifting power driving device, further includes inclined wedge 3, mandrel 2, shaping terrace die 4 and above-mentioned lateral compression molding die 1,
The upper lifting power driving device includes 1 lifting device of lateral compression molding die, 4 lifting device of shaping terrace die and inclined wedge 3
Fluid cylinder or cylinder can be respectively adopted in lifting device.Upper die holder, lower die holder and lifting drive are technology hands commonly used in the art
Section, it is not illustrated in figure.As shown in Figure 8 and Figure 9, the shaping terrace die 4, inclined wedge 3,1 and of lateral compression molding die
On the same axis, 4 upper end of shaping terrace die is fixedly connected with 4 lifting device of shaping terrace die in the axle center of mandrel 2, and lower end is equipped with insertion
Portion 41,3 upper end of inclined wedge be fixedly connected with 3 lifting device of inclined wedge, and the inner hole of inclined wedge 3, which is from top to bottom sequentially coaxially equipped with, to be connected
Cylinder hole section 32 and tubaeform hole section 31,11 upper end of retainer and lateral compression molding die 1 in lateral compression molding die
Lifting device is fixedly connected, and mandrel 2 is located at 4 lower section of shaping terrace die, and lower end is fixedly connected with lower die holder, 2 top of mandrel
Circumference uniform distribution is equipped with the profiled section of target indent tooth form, and the profiled section is extended axially downward along 2 upper surface of mandrel, the mandrel
2 upper end centers are equipped with positioning jack 23, the mandrel 2 and the 11 inner hole clearance fit of retainer, the voussoir 12 it is vertical
The cooperation corresponding with the target indent tooth form of 2 side wall of mandrel of face 121, the insertion section 41 is matched with positioning jack 23.
Inclined wedge 3 is the component for pushing 12 radial motion of voussoir, and retainer 11 can realize voussoir in lateral compression molding die 1
The control of 12 directions of motion, before molding, spring 13 is in free state；In forming process, 3 downlink of inclined wedge, voussoir 12 is radially transported
It is dynamic, compressed spring 13；After molding, 3 return of inclined wedge, spring 13 affranchises state, and with 12 return of dynamic voussoir, makes part and wedge
Block 12 separates, and is conducive to the smooth taking-up of part.Shaping terrace die 4 is placed in 2 upper end open position of mandrel, shaping in forming process
In its end of travel insertion section 41 insertion 2 positioning jack of mandrel, shaping terrace die 4 and 2 forming part of mandrel are formed completely punch-pin 4
Closure inner cavity, control the formed precision of tooth form.
Forming method with non-straight-through indent tooth form, comprising the following steps:
First step: the indent tooth form of the voussoir 12 and 2 side wall of mandrel in equipment in lateral compression molding die 1 is first adjusted
Corresponding position.
The second step: by sheet metal stretching and bottom punching bottomless and 51 cylindrical member of flanged pin of acquisition or cup shell blank are carried out
5, and blank 5 is placed on mandrel 2, the shaping area of indent tooth form to be processed among 5 side wall of blank is corresponded to the indent of mandrel 2
The profiled section 21 of tooth form, using the limiting section 22 of cylindrical member flange 51 and mandrel, i.e. concave edge is positioned.
The third step: lateral compression molding die lifting device drives lateral compression molding die 1 to move axially to blank 5
Indent tooth form shaping area after stop, in the process, 1 downlink of lateral compression molding die, movement travelS 1, movement speedV 1,
There are gap widths with 5 outer diameter of blank for 11 internal diameter of retainerC 1.11 downlink of retainer, 5 upper end of blank enter retainer 11, until wedge
After block 12 reaches designated position, lateral compression molding die 1 stops axial movement.
The fourth step: shaping terrace die lifting device drives shaping terrace die 4 to move down, and make 4 insertion section 41 of shaping terrace die with
The positioning jack 23 of 2 upper end of mandrel, which matches, to be plugged and fixed, and guarantees the verticality of mandrel 2 during the work time；Meanwhile inclined wedge 3
Lifting device also drives inclined wedge 3 vertically to move down, movement travelS 2, movement speedV 2, when the tubaeform hole section 31 and holding of inclined wedge 3
When the contact of incline plane of the voussoir 12 on 11 circumference of frame, inclined wedge 3 starts to squeeze to push away voussoir 12 and slide along the inclined-plane of voussoir 12 and continue
It is moved down along axial direction, the crowded voussoir 12 that pushes away of tubaeform hole section 31 makes voussoir 12 be oriented to 111 holes to retainer along the voussoir of retainer 11
11 radially move the profiled section that blank 5 is pressed to the indent tooth form of 2 side wall of mandrel, at this point, the spring 13 of 12 lower end of voussoir
Squeezed by second boss 122 and push away and gather to first boss 112, when inclined wedge 3 tubaeform hole section 31 and voussoir 12 inclined-plane from
It opens, and the arcwall face of the square 124 of the voussoir 12 of the cylinder hole section 32 of inclined wedge 3 and retainer 11 comes into contact with to full contact
When, the vertical plane 121 of 12 inner end of voussoir is got into completely in the indent tooth form of mandrel 2, shaping terrace die 4, mandrel 2,12 and of voussoir
Retainer 11 formed near closed hollow ring, guarantee indent tooth form profile shaping, the indent tooth form shaping area of 5 center side wall of blank it is interior
Concave tooth shape is by complete extrusion forming.
5th process: inclined wedge lifting device drives inclined wedge to stop declining and moves backward reset, shaping terrace die lifting device
Shaping terrace die is driven to move up reset, when shaping terrace die 4 and the disengaging lateral compression molding die of inclined wedge 3, on retainer 11
Voussoir 12 the indent tooth form profiled section of mandrel 2 is removed under the tension force effect of spring 13, retainer 11 is returned to voussoir 12
Initial position, 1 lifting device of lateral compression molding die, which can drive, moves to 5 top of blank on extrusion molding dies, takes out and adds
The good side wall of work has the blank 5 of indent tooth form.
Claims (4)
1. a kind of lateral compression molding die, it is characterized in that including retainer, voussoir and the spring of annular, retainer side wall upper part
Annular array is equipped with voussoir pilot hole, and lower annular array is equipped with first boss, and voussoir is by right-angled trapezium block, square and second
Boss is constituted, and the square upper end is fixedly connected with the long bottom surface of right-angled trapezium block, and lower end is fixedly connected with second boss, described
The shape of the horizontal cross-section of one end vertical plane of voussoir be isosceles trapezoid, the arc-shaped face in square surface of other end inclined-plane lower part,
The voussoir is actively inserted in voussoir pilot hole, and outwardly, vertical plane is described towards retainer center on right-angled trapezium block inclined-plane
Spring one end is fixedly connected with first boss, and the other end is fixedly connected with second boss.
2. a kind of lateral compression molding die according to claim 1, it is characterised in that the vertical plane of the voussoir with it is upper
Fall acute angle or rounded corner respectively for the junction of end face and the junction of lower end surface.
3. a kind of molding machine of the non-straight-through indent tooth form of band, including upper die holder and lower die holder, the upper die holder lower end is equipped with upper
Lifting power driving device, it is characterized in that further including inclined wedge, mandrel, shaping terrace die and lateral being squeezed including described in claim 1
Molding die,
The upper lifting power driving device includes lateral compression molding die lifting device, shaping terrace die lifting device and inclined wedge
Lifting device,
The shaping terrace die, inclined wedge, lateral compression molding die and mandrel axle center on the same axis, on the shaping terrace die
End is fixedly connected with shaping terrace die lifting device, and lower end is equipped with insertion section,
The inclined wedge upper end is fixedly connected with inclined wedge lifting device, and the inner hole of the inclined wedge, which is from top to bottom sequentially coaxially equipped with, to be connected
Logical cylinder hole section and tubaeform hole section,
Retainer upper end in the lateral compression molding die is fixedly connected with lateral compression molding die lifting device,
The mandrel is located at below shaping terrace die, and lower end is fixedly connected with lower die holder, and mandrel top circumference uniform distribution is equipped with
The profiled section of target indent tooth form, the profiled section are extended axially downward along mandrel upper surface, and the mandrel upper end center is equipped with
In positioning jack, the mandrel and the retainer inner hole clearance fit, the vertical plane of the voussoir and the target of mandrel side wall
The corresponding cooperation of concave tooth shape, the insertion section are matched with positioning jack.
4. the molding machine of the non-straight-through indent tooth form of band according to claim 3, it is characterized in that the upper lifting drive drives
Dynamic device includes that fluid cylinder is respectively adopted in lateral compression molding die lifting device, shaping terrace die lifting device and inclined wedge lifting device
Or cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821353069.2U CN208894880U (en) | 2018-08-22 | 2018-08-22 | Lateral compression molding die, the molding machine with non-straight-through indent tooth form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821353069.2U CN208894880U (en) | 2018-08-22 | 2018-08-22 | Lateral compression molding die, the molding machine with non-straight-through indent tooth form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208894880U true CN208894880U (en) | 2019-05-24 |
Family
ID=66569848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821353069.2U Withdrawn - After Issue CN208894880U (en) | 2018-08-22 | 2018-08-22 | Lateral compression molding die, the molding machine with non-straight-through indent tooth form |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208894880U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109047361A (en) * | 2018-08-22 | 2018-12-21 | 威海华邦精冲科技股份有限公司 | Lateral compression molding die, molding machine and method with non-straight-through indent tooth form |
| TWI722949B (en) * | 2020-07-30 | 2021-03-21 | 瑋瑩實業有限公司 | Twill molding die structure for riveting nut |
-
2018
- 2018-08-22 CN CN201821353069.2U patent/CN208894880U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109047361A (en) * | 2018-08-22 | 2018-12-21 | 威海华邦精冲科技股份有限公司 | Lateral compression molding die, molding machine and method with non-straight-through indent tooth form |
| CN109047361B (en) * | 2018-08-22 | 2024-04-05 | 威海华邦精冲科技股份有限公司 | Lateral extrusion forming die, forming device with non-straight-through concave tooth shape and method |
| TWI722949B (en) * | 2020-07-30 | 2021-03-21 | 瑋瑩實業有限公司 | Twill molding die structure for riveting nut |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Lateral extrusion forming die and forming device with non straight through concave tooth shape Effective date of registration: 20220228 Granted publication date: 20190524 Pledgee: Shandong Rushan rural commercial bank Limited by Share Ltd. Pledgor: WEIHAI HUABANG FINEBLANKING CO.,LTD. Registration number: Y2022980001969 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230608 Granted publication date: 20190524 Pledgee: Shandong Rushan rural commercial bank Limited by Share Ltd. Pledgor: WEIHAI HUABANG FINEBLANKING CO.,LTD. Registration number: Y2022980001969 |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 264500 No.2, Guangzhou road, Rushan Economic Development Zone, Weihai City, Shandong Province Patentee after: Weihai Huabang Precision Industry Co.,Ltd. Address before: 264500 No.2, Guangzhou road, Rushan Economic Development Zone, Weihai City, Shandong Province Patentee before: WEIHAI HUABANG FINEBLANKING CO.,LTD. |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190524 Effective date of abandoning: 20240405 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190524 Effective date of abandoning: 20240405 |