CN207973240U - Feeding trolley for stack type material - Google Patents
Feeding trolley for stack type material Download PDFInfo
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- CN207973240U CN207973240U CN201721893792.5U CN201721893792U CN207973240U CN 207973240 U CN207973240 U CN 207973240U CN 201721893792 U CN201721893792 U CN 201721893792U CN 207973240 U CN207973240 U CN 207973240U
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- locating rack
- pedestal
- feeding trolley
- positioning
- locating
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- 239000000463 material Substances 0.000 title claims abstract description 75
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000007704 transition Effects 0.000 claims abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 12
- 238000005245 sintering Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Abstract
The utility model discloses a kind of feeding trolleys for stack type material, include pedestal with walking mechanism and for the locating rack for material against positioning, locating rack is mounted on the base by transition components and can be moved to can be for material against the first position of positioning or the second position far from first position.The feeding trolley for being used for stack type material has many advantages, such as that simple in structure, at low cost, easily controllable, the operation is stable, loading and unloading are convenient, accurate positioning is reliable.
Description
Technical field
The utility model is related to conveying equipment technical fields, and in particular to a kind of feeding trolley for stack type material.
Background technology
Soft magnetic ferrite is a kind of functional magnetic material for making electronic component, and production process divides slurrying, pressure
The processes such as base, dumping, sintering.Wherein, sintering is link important in soft magnetic ferrite production, and sintering process and sintering equipment are straight
Connect the properties of product for determining soft magnetic ferrite.
Soft magnetic ferrite needs in the form of pile to pile up soft magnetic ferrite workpiece on kiln car before sintering, about per pile
There are 20-30 layers of load bearing board（General part）, every layer of load bearing board about put 3-6 layers of soft magnetic ferrite workpiece.Soft magnetic ferrite at present
The stacking of workpiece generally uses artificial stacking mode, has the following disadvantages：
1, time and effort consuming is loaded, with 12 pile bell-type furnaces（About 1.8 tons/stove of useful load）For, to load a stove needs 5-6 people to connect
Continuing 2 hour continual placing materials could complete, at the same time, after the completion of sintering discharging be also required to spend a large amount of manpowers and
Time completes, not only inefficiency, labor intensive, and damage caused by due to operation error leads to material spilling inevitably occurs
It loses.
2, the type of soft magnetic ferrite workpiece（Each size, size, shape is different）It is various, up to 100,000 kinds or more,
The product type of same manufacturing enterprise few then thousands of kinds, at most up to ten thousand kinds, this brings very big difficulty to automatic loading and unloading.
3, soft magnetic ferrite workpiece is placed on load bearing board in the form of pile, and stability is poor, in loading and unloading and
It easily shakes and is scattered during transporting.
Utility model content
The technical problems to be solved in the utility model is to overcome the shortcomings of the prior art, provide it is a kind of it is simple in structure,
At low cost, easily controllable, the operation is stable, loading and unloading convenience, accurate positioning are reliably used for the feeding trolley of stack type material.
In order to solve the above technical problems, the utility model uses following technical scheme：
A kind of feeding trolley for stack type material, include pedestal with walking mechanism and for for material against fixed
Position locating rack, the locating rack be mounted on the base by transition components and can move to can for material against positioning first
The second position of position or the separate first position.
Above-mentioned feeding trolley, it is preferred that the pedestal be equipped with two or more supporting bars, two or more supporting bars side by side and
Every setting.
Above-mentioned feeding trolley, it is preferred that the locating rack has for material against the positioning plane of positioning, the positioning
Plane is vertically arranged when locating rack is in the first position, the locating rack also have there are two be divided into material both sides and
Positioning plane prevents the lateral part surface that material is moved along positioning planar horizontal when being vertically arranged.
Above-mentioned feeding trolley, it is preferred that the transition components include more than two four-bar linkages, four bar of each plane
Mechanism includes two swing rods, and the both ends of each swing rod are hinged with pedestal and locating rack respectively, the pedestal, locating rack and two swing rods
Combination constitutes a four-bar linkage that locating rack can be made to be rocked to first position or the second position in perpendicular, described
Pedestal is equipped with the holding positioning element that the holding locating rack when locating rack moves to the first position is maintained at first position.
Above-mentioned feeding trolley, it is preferred that two swing rods of each four-bar linkage are in same perpendicular in up and down
It arranges, the spacing between two hinge joints of top swing rod is A, and the spacing between two hinge joints of lower section swing rod is B, top
The hinge joint of swing rod and pedestal to the spacing between lower section swing rod and the hinge joint of pedestal be C, the hinge of top swing rod and locating rack
Contact to the spacing between lower section swing rod and the hinge joint of locating rack be D, wherein A ＞ B, A+B ＞ C, A+B ＞ D, A+C ＞ B+
D。
Above-mentioned feeding trolley, it is preferred that the four-bar linkage is also associated with for driving locating rack to move to institute
State the foot pedal of the second position.
Above-mentioned feeding trolley, it is preferred that the lock for locating rack to be locked in the second position is equipped on the pedestal
Determine mechanism, the locking mechanism includes anti-retreating hook, and the anti-retreating hook is hingedly mounted on pedestal and can hook or take off by swinging
From the locating rack in the second position.
Above-mentioned feeding trolley, it is preferred that the walking mechanism is the multiple traveling wheels being mounted on the base, the pedestal
On handrail is installed.
Above-mentioned feeding trolley, it is preferred that the pedestal be equipped with for for positioning element be caught in to feeding trolley into
The locating groove of row positioning, one end of the locating groove have the opening that locating groove is caught in for positioning element.
Above-mentioned feeding trolley, it is preferred that there is a flaring introduction segment, the flaring to lead for the open end of the locating groove
The width edge for entering section is gradually reduced towards the direction inside locating groove.
Compared with prior art, the utility model has the advantage of：Feeding of the utility model for stack type material is small
When turner is made, material can be placed on to the position that needs are transported on pedestal, feeding trolley is equipped with locating rack, can be for being placed on
Material in supporting bar ensures stack type the material accuracy of placement location and stack type material on feeding trolley against positioning
The regularity of stacking enables palette fork accurately and reliably to hold up stack type material, and improves palette fork holding stack type material movement
When stability.Meanwhile locating rack can move to first position and the second position by transition components, it is fixed to make when loading and unloading material
Position frame moves to the second position, releases the positioning action to material, can avoid the handling of locating rack interference material, and can reduce pair
The operation precision requirement of handling equipment, to reduce equipment cost and control difficulty.The feeding trolley has simple in structure, cost
Advantage low, easily controllable, stable and reliable in work.
Description of the drawings
Fig. 1 is the dimensional structure diagram using the automatic loading and unloading machine of feeding trolley.
Fig. 2 is the dimensional structure diagram of feeding trolley.
Fig. 3 is in main structure diagram when first position for the locating rack of feeding trolley.
Fig. 4 is in the main structure diagram when second position for the locating rack of feeding trolley.
Fig. 5 is the schematic diagram of feeding trolley self-locking.
Marginal data：
1, rack；2, palette fork；21, connecting seat；22, pressure pin；23, side positioning component；3, horizontal slide；4, lifting seat；
101, pedestal；102, locating rack；1021, plane is positioned；1022, lateral part surface；103, supporting bar；104, swing rod；105, holding positions
Component；106, anti-retreating hook；107, traveling wheel；108, handrail；109, foot pedal；110, locating groove；1101, flaring introduction segment；
111, holder；112, guide roller.
Specific implementation mode
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figures 1 to 4, the feeding trolley for stack type material of the present embodiment, includes with walking mechanism
Pedestal 101 and for for material（Stack type material）Against the locating rack 102 of positioning, locating rack 102 is installed by transition components
On pedestal 101, transition components enable locating rack 102 to move to can be for material against the first position of positioning or far from described
The second position of first position, the material at first position of locating rack 102 can be positioned with locating rack 102 against formation, locating rack
102 at the second position locating rack 102 far from material.When this is used for the feeding trolley work of stack type material, material can be put
Set the position that needs are transported on pedestal 101, feeding trolley is equipped with locating rack 102, can be for the object that is placed in supporting bar 103
It is neat to ensure that stack type the material accuracy of placement location and stack type material on feeding trolley are piled up against positioning for material
Property, enables palette fork 2 accurately and reliably to hold up stack type material, and stabilization when improving 2 holding stack type material movement of palette fork
Property.Meanwhile locating rack 102 can move to first position and the second position by transition components, make locating rack when loading and unloading material
102 move to the second position, release the positioning action to material, can avoid locating rack 102 and interfere the handling of material, and can reduce
Operation precision requirement to handling equipment, to reduce equipment cost and control difficulty.The feeding trolley have it is simple in structure, at
This advantage low, easily controllable, stable and reliable in work.
In the present embodiment, two or more the supporting bars 103 for placing material, two or more supporting bars are installed on pedestal 101
103 side by side and interval setting, the space being inserted into for holding component is formed between adjacent two supporting bars 103, in order to hold up material.
In the present embodiment, locating rack 102 has for material against the positioning plane 1021 of positioning, and positioning plane 1021 is fixed
Position frame 102 is vertically arranged when be in first position, locating rack 102 also have there are two be divided into the lateral part surfaces of material both sides
1022, two lateral part surfaces 1022 prevent material from being moved horizontally along positioning plane 1021 when positioning plane 1021 and being vertically arranged.It is fixed
Bit plane 1021 and two lateral part surfaces 1022 can position in the horizontal plane three directions of material, can greatly improve object
Expect the regularity piled up, also, when the above material of two piles to be placed side by side on pedestal 101, two lateral part surfaces 1022 may be used also
So that the above material of two piles is mutually abutted, ensures the stability of relative position between the above material of two piles.Locating rack 102 moves to
When two positions, the positioning action of positioning plane 1021 and two lateral part surfaces 1022 to material is released.
In the present embodiment, transition components include more than two four-bar linkages, and each four-bar linkage includes two pendulum
The both ends of bar 104, each swing rod 104 are hinged with pedestal 101 and locating rack 102 respectively, pedestal 101, locating rack 102 and two swing rods
104 combinations constitute a four-bar linkage, and four-bar linkage can make locating rack 102 be rocked to first position in perpendicular
Or the second position, pedestal 101 are equipped with the holding locating rack 102 when locating rack 102 moves to first position and are maintained at first
The holding positioning element 105 of position.Above-mentioned hinge screw body makes locating rack 102 be rocked to first downwards under Gravitative Loads
It sets（Referring to Fig. 3）, operating four-bar linkage makes locating rack 102 be swung up, and locating rack 102 can be made to move to the second position
（Referring to Fig. 4）.
In the present embodiment, two swing rods 104 of each four-bar linkage, in arrangement up and down, are such as schemed in same perpendicular
Shown in 5, the spacing between two hinge joints of top swing rod 104 is A, the spacing between two hinge joints of lower section swing rod 104
For B, the hinge joint of top swing rod 104 and pedestal 101 to the spacing between lower section swing rod 104 and the hinge joint of pedestal 101 is C,
The hinge joint of top swing rod 104 and locating rack 102 to the spacing between lower section swing rod 104 and the hinge joint of locating rack 102 be D,
Wherein, A ＞ B, A+B ＞ C, A+B ＞ D, A+C ＞ B+ D.The four-bar linkage can realize locating rack 102 at the second position
Self-locking can be improved structural compactness, reduce cost, simplify operation and control.Two swing rods 104 can be to the same side-sway of pedestal 101
It is dynamic, so that locating rack 102 is located at first position, locating rack 102 is integrally located at a fixed pan at this time（Two swing rods 104 are crossed simultaneously
With the plane of 101 hinge axes of pedestal）Side；When needing that locating rack 102 is made to move to the second position, make locating rack 102 to
Upper swing, until the hinge joint of lower section swing rod 104 and locating rack 102 is moved to the other side of above-mentioned fixed pan, plane at this time
Four-bar mechanism forms self-locking, and locating rack 102 can not be fixed not under Gravitative Loads to lower swing to be maintained at the second position
It is dynamic.
In the present embodiment, the locking mechanism for locating rack 102 to be locked in the second position is installed on pedestal 101, locks
It includes anti-retreating hook 106 to determine mechanism, and anti-retreating hook 106 is hingedly mounted on pedestal 101 and can be in the by swinging hook or be detached from
The locating rack 102 of two positions.When anti-retreating hook 106 hooks the locating rack 102 in the second position, locating rack 102 can be stablized
Be located in the second position, avoid because collision etc. reasons due to cause locating rack 102 to first position swing, locating rack can be improved
102 the second position reliability of positioning, make safety higher.It drives anti-retreating hook 106 to swing to be detached from locating rack 102 and can release pair
The locking effect of locating rack 102 can make locating rack 102 be rocked to first position downwards at this time.
In the present embodiment, walking mechanism is multiple traveling wheels 107 on pedestal 101, is also equipped on pedestal 101
Handrail 108, convenient for the walking that feeding trolley is flexible and convenient；Four-bar linkage is also associated with for driving locating rack 102 to move
To the foot pedal 109 of the second position, manually trampling foot pedal 109 can drive four-bar linkage to act, and locating rack 102 is made to move
To the second position so that easy to operate.It is laborsaving.
In the present embodiment, pedestal 101 is equipped with locating groove 110, and one end of locating groove 110 has for positioning element card
The opening for entering locating groove 110, convenient for fast and accurately being positioned to feeding trolley.Specifically, positioning element is installation base
Plinth is equipped with for being caught in locating groove 110 so that feeding trolley is located in setting feeding position that palette fork 2 can move to
Detent mechanism, the setting feeding position can be configured according to actual place situation and 2 movement travel range of palette fork；This reality
The detent mechanism for applying example includes the holder 111 being fixedly mounted on installation foundation and several for being caught in locating groove 110
The guide roller 112 of positioning is formed, several guide rollers 112 are spaced along straight line on holder 111 successively.
Further, the open end of locating groove 110 has a flaring introduction segment 1101, the width of flaring introduction segment 1101
Along being gradually reduced towards the direction inside locating groove 110, guide roller 112 is made to be easy to be caught in locating groove 110.
Fig. 1 also shows the automatic loading and unloading machine for coordinating with feeding trolley and carrying out loading and unloading, which includes
Rack 1 and palette fork 2 for holding material, rack 1 are mounted on installation foundation, and palette fork 2 is installed by lifting and translating component
And it can be by lifting and translating Component driver lifting and move horizontally in rack 1.When the automatic loading and unloading machine works, pass through lifting
And translation Component driver palette fork 2 is lifted and is moved horizontally, and can be held up the material being placed on feeding trolley pedestal 101 and be sent on waiting for
Expect equipment on, or hold up wait for that the material on delivery device is sent to feeding trolley, to realize material automatic Cosmetic material and
Discharging is greatly improved production efficiency, saves manually and reduce cost.
In the present embodiment, palette fork 2 is including connecting seat 21 and is fixed in three or more pressure pins 22 on connecting seat 21, three or more
Pressure pin 22 is side by side and interval is arranged, and the upper surface of each pressure pin 22 is holding face, and the holding face of all pressure pins 22 is located at same level
On face.Since the holding face of all pressure pins 22 is located in same level, it can ensure the stability of material holding.Especially exist
When material bottom uses loading plate holding, the holding face holding loading plate of three or more spaced pressure pins 22 makes loading plate
Good stress performance, be not easily broken, and holding stability is good.For example, in sintering soft magnetic ferrite, generally on every piece of load bearing board
Multilayer soft magnetic ferrite workpiece is piled up, has the load bearing board of soft magnetic ferrite workpiece to pile up one pile of formation from the bottom to top several pile up
Material, is now placed in that the power that the load bearing board of bottom is born is larger, and frangibility damage is held using 2 holding of palette fork of the present embodiment
When burning the plate whole pile material of transport, the above problem can effectively avoid.
In the present embodiment, palette fork 2 also has there are two side positioning component 23, and two side positioning components 23 are divided by holding
Material both sides, after 2 holding material of palette fork, material is located between two side positioning components 23, is conducive to improve aesthetics, and two
Side positioning component 23 forms position-limiting action to material, it is ensured that material is neatly packed, and material is avoided to topple over.Preferably, above-mentioned
Each side positioning component 23 is the tablet being vertically arranged.Between three or more pressure pins, the 22 horizontally moveable insertion supporting bar 103 of palette fork 2
Gap in, consequently facilitating by the material being placed in supporting bar 103 hold up.
In the present embodiment, lifting and translation component include the horizontal slide 3 being slidedly arranged in the horizontal direction in rack 1 and along perpendicular
Histogram is mounted on lifting seat 4, is set between rack 1 and horizontal slide 3 to the lifting seat 4 being slidedly arranged on horizontal slide 3, palette fork 2
There is the first driving mechanism that driving horizontal slide 3 slides, is equipped with what driving lifting seat 4 slided between horizontal slide 3 and lifting seat 4
Second driving mechanism.The driving sliding of horizontal slide 3 of first driving mechanism can move to different dresses with lifting seat 4 and palette fork 2
Unloading station, the second driving mechanism drive lifting seat 4 elevating movement can with 2 corresponding elevating movement of palette fork, to holding up or
Put down the material of each handling station.Above-mentioned first driving mechanism and the second driving mechanism are all made of existing telescopic driving machine
Structure, it is preferred that the first driving mechanism uses the combination of motor and turbine and worm mechanism, and the second driving mechanism is using motor driving rolling
Beam is arranged in the form of wheel bearing walking, idler wheel, is conducive to ensure the stationarity of walking.Above-mentioned lifting seat 4 is led by existing
Rail mechanism is slidedly arranged on horizontal slide 3, and sliding stationarity is good.
The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment.To those of ordinary skill in the art, gained under the premise of not departing from the utility model technical concept
To modifications and variations also should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of feeding trolley for stack type material, it is characterised in that：It include the pedestal with walking mechanism（101）With with
In the locating rack for material against positioning（102）, the locating rack（102）It is mounted on pedestal by transition components（101）On simultaneously
Can move to can for material against the first position of positioning or far from the first position the second position.
2. feeding trolley according to claim 1, it is characterised in that：The pedestal（101）It is equipped with two or more supporting bars
（103）, two or more supporting bars（103）Side by side and interval is arranged.
3. feeding trolley according to claim 1, it is characterised in that：The locating rack（102）With for material against fixed
The positioning plane of position（1021）, the positioning plane（1021）In locating rack（102）It is vertically arranged when in the first position,
The locating rack（102）Also there are two be divided into material both sides and positioning plane for tool（1021）Material edge is prevented when being vertically arranged
Position plane（1021）The lateral part surface moved horizontally（1022）.
4. feeding trolley according to claim 1, it is characterised in that：The transition components include four bar of more than two planes
Mechanism, each four-bar linkage include two swing rods（104）, each swing rod（104）Both ends respectively with pedestal（101）And locating rack
（102）It is hinged, the pedestal（101）, locating rack（102）With two swing rods（104）Combination, which constitutes one, can make locating rack（102）
The four-bar linkage of first position or the second position, the pedestal are rocked in perpendicular（101）It is equipped with and is positioning
Frame（102）Holding locating rack when moving to the first position（102）It is maintained at the holding positioning element of first position（105）.
5. feeding trolley according to claim 4, it is characterised in that：Two swing rods of each four-bar linkage（104）
In arrangement up and down, top swing rod in same perpendicular（104）Two hinge joints between spacing be A, lower section swing rod（104）
Two hinge joints between spacing be B, top swing rod（104）With pedestal（101）Hinge joint to lower section swing rod（104）The bottom of with
Seat（101）Hinge joint between spacing be C, top swing rod（104）With locating rack（102）Hinge joint to lower section swing rod
（104）With locating rack（102）Hinge joint between spacing be D, wherein A ＞ B, A+B ＞ C, A+B ＞ D, A+C ＞ B+ D.
6. feeding trolley according to claim 4, it is characterised in that：The four-bar linkage is also associated with for driving
Locating rack（102）Move to the foot pedal of the second position（109）.
7. feeding trolley according to claim 1, it is characterised in that：The pedestal（101）On be equipped with for will position
Frame（102）It is locked in the locking mechanism of the second position, the locking mechanism includes anti-retreating hook（106）, the anti-retreating hook（106）Hinge
It connects and is mounted on pedestal（101）And it can hook or be detached from the locating rack in the second position by swinging（102）.
8. feeding trolley according to claim 1, it is characterised in that：The walking mechanism is mounted on pedestal（101）On
Multiple traveling wheels（107）, the pedestal（101）On handrail is installed（108）.
9. feeding trolley according to any one of claim 1 to 8, it is characterised in that：The pedestal（101）It is equipped with and uses
In being caught in the locating groove to be positioned to feeding trolley for positioning element（110）, the locating groove（110）One end tool
Have and is caught in locating groove for positioning element（110）Opening.
10. feeding trolley according to claim 9, it is characterised in that：The locating groove（110）Open end have one
Flaring introduction segment（1101）, the flaring introduction segment（1101）Width along towards locating groove（110）Internal direction is gradual
Reduce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721893792.5U CN207973240U (en) | 2017-12-29 | 2017-12-29 | Feeding trolley for stack type material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721893792.5U CN207973240U (en) | 2017-12-29 | 2017-12-29 | Feeding trolley for stack type material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207973240U true CN207973240U (en) | 2018-10-16 |
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ID=63768244
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721893792.5U Active CN207973240U (en) | 2017-12-29 | 2017-12-29 | Feeding trolley for stack type material |
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| Country | Link |
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| CN (1) | CN207973240U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107934583A (en) * | 2017-12-29 | 2018-04-20 | 湖南金炉科技有限责任公司 | Feeding trolley for stack type material |
-
2017
- 2017-12-29 CN CN201721893792.5U patent/CN207973240U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107934583A (en) * | 2017-12-29 | 2018-04-20 | 湖南金炉科技有限责任公司 | Feeding trolley for stack type material |
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Address after: Room 203-205, Hunan Changyuan Lithium Co., Ltd., No. 18 Lutian Road, Changsha High-tech Development Zone, Hunan Province Patentee after: HUNAN GOLD FURNACE SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 410000 No. 18 Lutian Road, Changsha High-tech Development Zone, Hunan Province Patentee before: HUNAN JINLU TECHNOLOGY Co.,Ltd. |
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| IP01 | Partial invalidation of patent right | ||
| IP01 | Partial invalidation of patent right |
Commission number: 5W122254 Conclusion of examination: Declare that the patent right of utility model no. 201721893792.5 is partially invalid, and continue to maintain the validity of the patent right on the basis of claims 1-6 submitted by the patentee on February 5, 2021 Decision date of declaring invalidation: 20210602 Decision number of declaring invalidation: 49819 Denomination of utility model: Feeding trolley for stacking materials Granted publication date: 20181016 Patentee: HUNAN GOLD FURNACE SCIENCE & TECHNOLOGY Co.,Ltd. |