CN108972732A - A kind of improving equipment for plank aperture - Google Patents
A kind of improving equipment for plank aperture Download PDFInfo
- Publication number
- CN108972732A CN108972732A CN201810740351.4A CN201810740351A CN108972732A CN 108972732 A CN108972732 A CN 108972732A CN 201810740351 A CN201810740351 A CN 201810740351A CN 108972732 A CN108972732 A CN 108972732A
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- Prior art keywords
- gear
- fixed
- plate
- making drill
- hole making
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- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 238000005266 casting Methods 0.000 claims abstract description 11
- 230000001174 ascending effect Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000004080 punching Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000002023 wood Substances 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
- B27C3/00—Drilling machines or drilling devices; Equipment therefor
- B27C3/02—Stationary drilling machines with a single working spindle
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Milling, Drilling, And Turning Of Wood (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a kind of improving equipment for plank aperture, including bottom plate and lifter plate, hole making drill is equipped with above lifter plate, hole making drill is hinged on positioning plate, the upper end sleeve of hole making drill is fixed with outer gear ring, and gear is engaged in outer gear ring, and gear is fixed in the shaft of rotating electric machine；The upper surface of gear is higher than the upper surface of outer gear ring, the side of gear is engaged with adjusting gear rack, adjusting gear rack is molded on the supporting plate of L-type, one end of supporting plate is fixed with vertical column, vertical slot is formed on column, casting lug thereon is plugged in slot, casting lug thereon is molded on locking tube, locking tube is plugged on the meshing point gap between outer gear ring and gear, vertical rack gear is formed on locking tube side wall below casting lug thereon, rack gear is engaged with lifting gear, the compression bar of T-type is plugged in locking tube, the upper end of compression bar forms block, and compression bar upper sleeve has pressure spring.The present invention facilitates the punching for realizing macropore, and the waste wood after punching can be discharged.
Description
Technical field:
The present invention relates to the technical fields of woodworking machinery, are specifically related to a kind of improving equipment for plank aperture.
Background technique:
Carpenter is a technique, an exclusive technology, and the common technology of building, while also referring to using this door
The personnel of technology.In current some woodwork Furniture Factories, generally requires and open up macropore on plank, to meet on corresponding furniture
The demand of aperture, and aperture common on plank can be realized by small-sized hole making drill or this drill bit, and macropore generally can only
Excision forming is carried out using saw blade, and saw blade is used to cut, the circularity of macropore is bad, and need long-time reconditioning just achievable,
Its production efficiency is lower.
In view of the above shortcomings, the designer, is actively subject to research and innovation, to found, one kind is new structural to be used for
Plank aperture improves equipment, and makes it with more the utility value in industry.
Summary of the invention:
The purpose of the present invention aims to solve the problem that problem of the existing technology, provides a kind of punching for facilitating and realizing macropore, and
And improving equipment for plank aperture can be used for by what the waste wood after punching was discharged.
The present invention relates to a kind of improving equipment for plank aperture, including foundation and the bottom for being fixed on the foundation top
Plate, the bottom plate upper end are fixed with several guide posts, are plugged with lifter plate in the guide post, on the lifter plate and bottom plate at
Type has corresponding relief hole, and several lifting cylinders are fixed on bottom plate, and the piston rod of the lifting cylinder is fixed across bottom plate
On lifter plate, the surface of the relief hole of lifter plate is equipped with the hole making drill of circular ring shape, and the bottom of the hole making drill uniformly forms
There are multiple sawtooth, hole making drill is hinged on the positioning plate for being fixed on guiding top end, and the upper end of hole making drill is pierced by the upper of positioning plate
End face sleeve is fixed with outer gear ring, and gear is engaged in the outer gear ring, and the gear is fixed in the shaft of rotating electric machine, institute
Rotating electric machine is stated to be fixed on the electric machine support of " Fang " shape, the electric machine support is fixed on a mounting board, the mounting plate at
Type is on the side wall of positioning plate；
The upper surface of the gear is higher than the upper surface of outer gear ring, and the side of gear is engaged with the adjusting gear rack of strip,
The adjusting gear rack is molded on the supporting plate of L-type, and the supporting plate is located at the top of hole making drill, forms bearing piece on supporting plate, described
Bearing piece is plugged in the guide groove for being molded over electric machine support inner wall upper end, and one end of supporting plate is fixed with vertical column, described vertical
Column is located above hole making drill, forms vertical slot on column, casting lug thereon, the protrusion formation of lots are plugged in the slot
On the upper end side wall of locking tube, the locking tube is plugged on the meshing point gap between outer gear ring and gear, casting lug thereon lower section
Locking tube side wall on form vertical rack gear, the rack gear is engaged with lifting gear, and the lifting gear is plugged and fixed
On fulcrum, the fulcrum is plugged on column, and when adjusting gear rack is disengaged from gear, locking tube is placed exactly in hole making drill
Overcentre is plugged with the compression bar of T-type in locking tube, and the upper end of the compression bar forms block, and compression bar upper sleeve has pressure spring, institute
The both ends for stating pressure spring press up against on the upper surface of the block and locking tube.
By above-mentioned technical proposal, in the use of the present invention, locking tube is plugged between outer gear ring and gear when initial
Meshing point gap, thus locks hole making drill, prevents from causing hole making drill to start because rotating electric machine opens by mistake.When needing aperture, then
Rotating fulcrum drives lifting gear rotation, and lifting gear drives band carry-over bar to move up, so that being moved away from external tooth on locking tube
Plank, is then placed on lifter plate by the meshing point gap between circle and gear and the top positioned at hole making drill, opens rotation
Motor realizes hole making drill rotation, and rotating electric machine is when rotated, will drive adjusting gear rack and supporting plate is mobile so that locking tube to
Hole making drill center it is mobile, and when adjusting gear rack and gear are disengaged from, locking tube is placed exactly in the overcentre of hole making drill,
Rotating electric machine continues rotation and drives hole making drill rotation, then recycles lifting cylinder that lifter plate and plank is made to increase, plank liter
It realizes to hole making drill to aperture on plank.After the completion of aperture, moved down by lifting gear band carry-over bar, so that locking tube
It moves down, locking tube is moved down across positioning plate, finally by lower moulded rod, so that the lower end of compression bar is stretched out from locking tube, will be set
Timber in hole making drill releases hole making drill, and waste wood is discharged from forming in corresponding relief hole on lifter plate and bottom plate.
Locking tube and compression bar in the present invention not only can be used as the locking tool of hole making drill in hole making drill when not used, but also open in plank
It can also be used as that the push rod of waste wood is discharged behind hole, kill two birds with one stone.
Through the above scheme, it is of the invention it is a kind of facilitate the punching for realizing macropore for improving equipment for plank aperture, and
And the waste wood after punching can be discharged.
As a preference of the above scheme, the supporting plate stretches out adjusting gear rack far from one end of locking tube and is pierced by motor
Bracket.
As a preference of the above scheme, the briquetting of L-type is plugged on the lifter plate upper surface of the relief hole surrounding,
The lower end of the briquetting passes through lifter plate and is fixed on the piston rod of gripper cylinder, and the gripper cylinder is fixed on the bottom of lifter plate
On face.According to the above scheme, after plank being placed on lifter plate, briquetting is driven to move down using gripper cylinder, thus by clip with wooden board
Positioning is held, then carries out aperture.
As a preference of the above scheme, the length of guide groove is greater than locking tube into hole making drill on the electric machine support
The horizontal distance of the heart.
As a preference of the above scheme, the positioning plate is rounded, formed on the side wall of positioning plate it is several with lead
To the corresponding trunnion of column, the trunnion is fixed on the top of corresponding guide post.
As a preference of the above scheme, the lifting gear is plugged in the slot of column, and one end of fulcrum is pierced by
Column forms rotational handle.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention:
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein:
Fig. 1 is positive structure diagram of the invention；
Fig. 2 is side structure schematic view of the invention；
Fig. 3 is fragmentary bottom structural schematic diagram of the invention；
Fig. 4 is the overlooking structure diagram in the present invention between supporting plate and gear；
Structural schematic diagram of the Fig. 5 between central post of the present invention and locking tube；
Fig. 6 is the schematic cross-sectional view of Fig. 5.
Specific embodiment:
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Referring to Fig. 1 to Fig. 3, a kind of improving equipment for plank aperture of the present invention, including foundation 1 and be fixed on
The bottom plate 2 on 1 top of foundation, 2 upper end of bottom plate are fixed with several guide posts 3, are plugged with lifter plate in the guide post 3
4, corresponding relief hole 24 is formed on the lifter plate 4 and bottom plate 2, and several lifting cylinders 41 are fixed on bottom plate 2, it is described
The piston rod of lifting cylinder 41 passes through bottom plate 2 and is fixed on lifter plate 4, on 4 upper surface of lifter plate of 24 surrounding of relief hole
It is plugged with the briquetting 42 of L-type, the lower end of the briquetting 42 passes through lifter plate 4 and is fixed on the piston rod of gripper cylinder 43, described
Gripper cylinder 43 is fixed on the bottom surface of lifter plate 4, and the surface of the relief hole 24 of lifter plate 4 is equipped with the hole making drill 5 of circular ring shape,
The bottom of the hole making drill 5 uniformly forms multiple sawtooth 501, and hole making drill 5 is hinged on the positioning plate for being fixed on 3 top of guide post
On 6, the upper surface sleeve that the upper end of hole making drill 5 is pierced by positioning plate 6 is fixed with outer gear ring 51, engages in the outer gear ring 51 with teeth
Wheel 52, the gear 52 is fixed in the shaft of rotating electric machine 53, and the rotating electric machine 53 is fixed on the motor branch of " Fang " shape
On frame 54, the electric machine support 54 is fixed on mounting plate 55, and the mounting plate 55 is molded on the side wall of positioning plate 6.
Referring to Fig. 1, Fig. 2, fig. 4 to fig. 6, the upper surface of the gear 52 is higher than the upper surface of outer gear ring 51, gear 52
Side is engaged with the adjusting gear rack 71 of strip, and the adjusting gear rack 71 is molded on the supporting plate 7 of L-type, and the supporting plate 7, which is located at, to be opened
The top of hole device 5 forms bearing piece 72 on supporting plate 7, and the bearing piece 72, which is plugged on, is molded over leading for 54 inner wall upper end of electric machine support
Into slot 541, one end of supporting plate 7 is fixed with vertical column 8, and the column 8 is located at 5 top of hole making drill, forms on column 8
Vertical slot 81 is plugged with casting lug thereon 91 in the slot 81, and the casting lug thereon 91 is molded over the upper end side wall of locking tube 9
On, the locking tube 9 is plugged on the meshing point gap between outer gear ring 51 and gear 52,9 side of locking tube of 91 lower section of casting lug thereon
Vertical rack gear 92 is formed on wall, the rack gear 92 is engaged with lifting gear 93, and the lifting gear 93, which is plugged and fixed, to be propped up
On axis 94, the fulcrum 94 is plugged on column 8, and lifting gear 93 is plugged in the slot 81 of column 8, and one end of fulcrum 94 is worn
Column 8 forms rotational handle 941 out, and the length of guide groove 541 is greater than locking tube 9 to hole making drill 5 on the electric machine support 54
The horizontal distance at center, the supporting plate 7 stretch out adjusting gear rack 71 far from one end of locking tube 9 and are pierced by electric machine support 54, work as tune
When section rack gear 71 and gear 52 are disengaged from, locking tube 9 is placed exactly in the overcentre of hole making drill 5, is plugged with T in locking tube 9
The compression bar 10 of type, the upper end of the compression bar 10 form block 101, and 10 upper sleeve of compression bar has a pressure spring 20, and the two of the pressure spring 20
End presses up against on 9 upper surface of the block 101 and locking tube.
In the specific implementation, when initial, locking tube 9 is plugged between the meshing point between outer gear ring 51 and gear 52 present invention
Thus gap locks hole making drill 5, prevent from causing hole making drill 5 to start because rotating electric machine 53 opens by mistake.When needing aperture, then rotate
Fulcrum 94 drives lifting gear 93 to rotate, and lifting gear 93 drives band carry-over bar 92 to move up, so that being moved away from locking tube 9
Meshing point gap between outer gear ring 51 and gear 52 and the top positioned at hole making drill 5, are then placed in lifter plate 4 for plank
On, it opens rotating electric machine 53 and realizes that hole making drill 5 rotates, and rotating electric machine 53 is when rotated, will drive adjusting gear rack 71 and branch
Plate 7 is mobile, so that locking tube 9 is mobile towards 5 center of hole making drill, and when adjusting gear rack 71 and gear 52 are disengaged from, locking
Pipe 9 is placed exactly in the overcentre of hole making drill 5, and rotating electric machine 53 continues rotation and hole making drill 5 is driven to rotate, and then recycles lifting
Cylinder 41 rises lifter plate 4 and plank, and plank rises at hole making drill 5 and realizes to aperture on plank.After the completion of aperture, pass through
Lifting gear 93 is moved down with carry-over bar 92, so that locking tube 9 moves down, locking tube 9 is moved down across positioning plate 6, finally by
The timber being located in hole making drill 5 is released hole making drill 5 so that the lower end of compression bar 10 is stretched out from locking tube 9 by lower moulded rod 10,
Waste wood is discharged from forming in corresponding relief hole 24 on lifter plate 4 and bottom plate 2.Locking tube 9 and compression bar in the present invention
10 not only can be used as the locking tool of hole making drill 5 in hole making drill 5 when not used, but also can also make discharge after plank aperture and give up
The push rod of timber is used, and is killed two birds with one stone.
A kind of facilitate the punching for realizing macropore, Er Qieneng for improving equipment for plank aperture in conclusion of the invention
By the waste wood discharge after punching.
Improving equipment for plank aperture provided by the present invention, only a specific embodiment of the invention, but this hair
Bright protection scope is not limited thereto, anyone skilled in the art the invention discloses technical scope
It is interior, it can easily think of the change or the replacement, should all cover within that scope of the present invention.Therefore, protection scope of the present invention is answered
It is subject to the scope of protection of the claims.
Claims (6)
1. a kind of improving equipment for plank aperture, including foundation (1) and it is fixed on the bottom plate (2) on the foundation top,
Be characterized in that: bottom plate (2) upper end is fixed with several guide posts (3), is plugged in the guide post lifter plate (4), described
Corresponding relief hole (24) is formed on lifter plate and bottom plate, is fixed with several lifting cylinders (41), the liter on bottom plate (2)
The piston rod of sending down abnormally ascending cylinder passes through bottom plate (2) and is fixed on lifter plate (4), and the surface of the relief hole (24) of lifter plate is equipped with annulus
The hole making drill (5) of shape, the bottom of the hole making drill uniformly form multiple sawtooth (501), and hole making drill (5), which is hinged on to be fixed on, leads
To on the positioning plate (6) on column (3) top, the upper surface sleeve that the upper end of hole making drill (5) is pierced by positioning plate (6) is fixed with outer gear ring
(51), it is engaged in the outer gear ring gear (52), the gear is fixed in the shaft of rotating electric machine (53), the electric rotating
Machine is fixed on the electric machine support (54) of " Fang " shape, and the electric machine support is fixed on mounting plate (55), the mounting plate at
Type is on the side wall of positioning plate (6)；
The upper surface of the gear (52) is higher than the upper surface of outer gear ring (51), and the side of gear (52) is engaged with the tune of strip
It saves rack gear (71), the adjusting gear rack is molded on the supporting plate (7) of L-type, and the supporting plate is located at the top of hole making drill (5), supporting plate
(7) it being formed on bearing piece (72), the bearing piece is plugged in the guide groove (541) for being molded over electric machine support (54) inner wall upper end,
One end of supporting plate (7) is fixed with vertical column (8), and the column is located above hole making drill (5), is formed on column (8) perpendicular
Straight slot (81) is plugged with casting lug thereon (91) in the slot, and the casting lug thereon is molded over the upper end side wall of locking tube (9)
On, the locking tube is plugged on the meshing point gap between outer gear ring (51) and gear (52), the locking below casting lug thereon (91)
It is formed vertical rack gear (92) on pipe (9) side wall, the rack gear is engaged with lifting gear (93), and the lifting gear grafting is solid
It being scheduled on fulcrum (94), the fulcrum is plugged on column (8), when adjusting gear rack (71) and gear (52) are disengaged from, lock
Tight pipe (9) is placed exactly in the overcentre of hole making drill (5), and the compression bar (10) of T-type is plugged in locking tube (9), the compression bar
Upper end forms block (101), and compression bar (10) upper sleeve has pressure spring (20), and the both ends of the pressure spring press up against the block
(101) and on the upper surface of locking tube (9).
2. improving equipment for plank aperture according to claim 1, it is characterised in that: the supporting plate (7) is far from lock
One end of tight pipe (9) stretches out adjusting gear rack (71) and is pierced by electric machine support (54).
3. improving equipment for plank aperture according to claim 1, it is characterised in that: relief hole (24) surrounding
Lifter plate (4) upper surface on be plugged with the briquetting (42) of L-type, the lower end of the briquetting passes through lifter plate (4) and is fixed on clamping
On the piston rod of cylinder (43), the gripper cylinder is fixed on the bottom surface of lifter plate (4).
4. improving equipment for plank aperture according to claim 1, it is characterised in that: on the electric machine support (54)
The length of guide groove (541) is greater than the horizontal distance at locking tube (9) to hole making drill (5) center.
5. improving equipment for plank aperture according to claim 1, it is characterised in that: the positioning plate (6) is in circle
Shape forms several trunnions (61) corresponding with guide post (3) on the side wall of positioning plate, and the trunnion is fixed on corresponding guiding
The top of column (3).
6. improving equipment for plank aperture according to claim 1, it is characterised in that: the lifting gear (93) is inserted
It connects in the slot (81) of column (8), one end of fulcrum (94) is pierced by column (8) and forms rotational handle (941).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810740351.4A CN108972732B (en) | 2018-07-07 | 2018-07-07 | Improved equipment for punching wood board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810740351.4A CN108972732B (en) | 2018-07-07 | 2018-07-07 | Improved equipment for punching wood board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108972732A true CN108972732A (en) | 2018-12-11 |
| CN108972732B CN108972732B (en) | 2020-09-04 |
Family
ID=64537270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810740351.4A Active CN108972732B (en) | 2018-07-07 | 2018-07-07 | Improved equipment for punching wood board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108972732B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112108673A (en) * | 2020-09-02 | 2020-12-22 | 安徽同盛环件有限公司 | Equal-angle hole forming device and method for machining wind power ring |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3390596A (en) * | 1965-09-01 | 1968-07-02 | Trevathan Sales Corp | Cutting head assembly |
| CN103692499A (en) * | 2013-12-18 | 2014-04-02 | 浙江双枪竹木有限公司 | Equipment for grooving and drilling on side of cutting board |
| CN205021692U (en) * | 2015-08-17 | 2016-02-10 | 芜湖市金建胶合板厂 | Small -size rectangular sheet cut ware |
| CN106291326A (en) * | 2016-08-23 | 2017-01-04 | 王文庆 | A kind of fixed point testing agency for integrated circuit |
| CN205889399U (en) * | 2016-08-16 | 2017-01-18 | 江苏苏海工贸有限公司 | System billet isolated plant |
| CN206733200U (en) * | 2017-01-17 | 2017-12-12 | 甘肃畜牧工程职业技术学院 | A kind of numerical control device boring for sheet material |
-
2018
- 2018-07-07 CN CN201810740351.4A patent/CN108972732B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3390596A (en) * | 1965-09-01 | 1968-07-02 | Trevathan Sales Corp | Cutting head assembly |
| CN103692499A (en) * | 2013-12-18 | 2014-04-02 | 浙江双枪竹木有限公司 | Equipment for grooving and drilling on side of cutting board |
| CN205021692U (en) * | 2015-08-17 | 2016-02-10 | 芜湖市金建胶合板厂 | Small -size rectangular sheet cut ware |
| CN205889399U (en) * | 2016-08-16 | 2017-01-18 | 江苏苏海工贸有限公司 | System billet isolated plant |
| CN106291326A (en) * | 2016-08-23 | 2017-01-04 | 王文庆 | A kind of fixed point testing agency for integrated circuit |
| CN206733200U (en) * | 2017-01-17 | 2017-12-12 | 甘肃畜牧工程职业技术学院 | A kind of numerical control device boring for sheet material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112108673A (en) * | 2020-09-02 | 2020-12-22 | 安徽同盛环件有限公司 | Equal-angle hole forming device and method for machining wind power ring |
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| Publication number | Publication date |
|---|---|
| CN108972732B (en) | 2020-09-04 |
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Effective date of registration: 20191028 Address after: 523000 room 06, Room 203, building 1, No. 5, Songshan Lake section, Songshan Lake Avenue, Songshan Lake Park, Dongguan City, Guangdong Province Applicant after: Dongguan Jinyue Information Technology Co.,Ltd. Address before: 523000 Guangdong province Dongguan City Songshan Lake high tech Industrial Zone Building 406 industrial development productivity Applicant before: Dongguan Lianzhou Intellectual Property Operation Management Co.,Ltd. |
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Effective date of registration: 20200805 Address after: 311800 Huxi nature village, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Applicant after: Zhuji yunao machinery accessories factory Address before: 523000 room 06, Room 203, building 1, No. 5, Songshan Lake section, Songshan Lake Avenue, Songshan Lake Park, Dongguan City, Guangdong Province Applicant before: Dongguan Jinyue Information Technology Co.,Ltd. |
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Effective date of registration: 20220818 Address after: No. 327, Xiafan Natural Village, Bailifan Village, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province, 312000 Patentee after: Zhuji Haolong Machinery Co., Ltd. Address before: 311800 Huxi natural village, Huxi community, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province (in Zhuji Wangyu Machinery Co., Ltd.) Patentee before: Zhuji yunao machinery accessories factory |
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Denomination of invention: An improved equipment for wood board opening Effective date of registration: 20221129 Granted publication date: 20200904 Pledgee: Shaoxing Bank Co.,Ltd. Zhuji sub branch Pledgor: Zhuji Haolong Machinery Co.,Ltd. Registration number: Y2022980023930 |