CN218398359U - Cutting device for producing decorative base paper capable of collecting waste materials - Google Patents

Cutting device for producing decorative base paper capable of collecting waste materials Download PDF

Info

Publication number
CN218398359U
CN218398359U CN202222254683.6U CN202222254683U CN218398359U CN 218398359 U CN218398359 U CN 218398359U CN 202222254683 U CN202222254683 U CN 202222254683U CN 218398359 U CN218398359 U CN 218398359U
Authority
CN
China
Prior art keywords
cutting
cutting knife
workbench
cutting device
base paper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202222254683.6U
Other languages
Chinese (zh)
Inventor
夏明会
郝会玲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebei Minglian New Material Technology Co ltd
Original Assignee
Hebei Minglian New Material Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hebei Minglian New Material Technology Co ltd filed Critical Hebei Minglian New Material Technology Co ltd
Priority to CN202222254683.6U priority Critical patent/CN218398359U/en
Application granted granted Critical
Publication of CN218398359U publication Critical patent/CN218398359U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The utility model relates to the technical field of decorative base paper cutting equipment, in particular to a cutting device for decorative base paper production, which can collect waste materials, and comprises a workbench, wherein a door-shaped bracket is arranged on the workbench; the cutting knife is arranged in the bracket in a lifting manner under the driving of the hydraulic cylinder; the blanking port is arranged on the workbench in front of the cutting knife; the turnover plate is arranged in the blanking port in an openable and closable manner under the action of the first driving member; the sliding rail is arranged on the workbench behind the cutting knife along the material advancing direction; the push rod slides along the slide rail under the action of the second driving component, a push plate is arranged at the first end of the push rod close to the cutting knife, and when the push rod slides towards the direction close to the cutting knife, the push plate can push the cut waste materials to the turnover plate. The utility model has the advantages of garbage collection is convenient, cut accurate and effectual.

Description

Cutting device for producing decorative base paper capable of collecting waste materials
Technical Field
The utility model relates to a decorate body paper cutting equipment technical field, specifically be a can collect cutting device is used in decoration body paper production of waste material.
Background
In the initial production process, a manufacturer generally winds the decorative original paper roll into a roll with a large diameter for convenience of production, but different customers have different requirements on the diameter of the paper roll, so that the cutting and winding are required to be performed again. After the cutting is finished, the existing cutting device needs to manually clean and collect the cut waste paper and waste materials, time and labor are wasted, the labor capacity of workers is increased, and meanwhile, part of the waste materials are left on a workbench right below a cutter after the cutting is finished, so that certain risks are caused during manual cleaning; and the material can shift when cutting, and then influence the accuracy of cutting, lead to damaging the material easily, increase the rejection rate, improved the manufacturing cost of enterprise.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a can collect decoration body paper for production cutting device of waste material aims at solving among the prior art waste material collection inconvenient, cut the unsafe technical problem of material.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a can collect cutting device for production of decorative base paper of waste material includes:
the workbench is provided with a door-shaped bracket;
the cutting knife is arranged in the bracket in a lifting manner under the driving of a hydraulic cylinder;
the blanking port is arranged on the workbench in front of the cutting knife;
the turnover plate is arranged in the blanking port in an openable and closable manner under the action of the first driving member;
the sliding rail is arranged on the workbench behind the cutting knife along the material advancing direction;
the push rod, under the second drive component effect, follow the slide rail slides, is close to the push rod first end that cuts the sword is provided with the push pedal, works as the push rod to being close to when cutting the sword direction and sliding, the push pedal can with the waste material propelling movement after cutting extremely on the returning face plate.
The utility model is further improved in that the first driving member comprises a cylinder and a first connecting rod arranged at the end part of a piston rod of the cylinder;
the first end of the turnover plate is hinged to the side wall of the blanking opening, the lower portion of the second end of the turnover plate is hinged to the first connecting rod, the free end of the first connecting rod is hinged to the end portion of a piston rod of an air cylinder arranged below the workbench, and when the piston rod of the air cylinder stretches out and draws back, the turnover plate can be driven by the first connecting rod to be opened and closed.
The utility model discloses a further improvement lies in, the second drive component includes the second connecting rod that motor and output set up, the guide post that the second connecting rod free end set up with the slotted hole sliding connection of push rod second end.
The utility model discloses a further improvement lies in, support both sides inner wall all is provided with the guide rail, two the guide rail respectively with cut sword both ends sliding connection.
The utility model discloses a further improvement lies in, the symmetry is provided with two splint, two on the workstation of material advancing direction both sides splint are close to each other or keep away from under translation mechanism's drive.
The utility model discloses a further improvement lies in, two splint are located cut in the support of sword both sides.
The utility model discloses a further improvement lies in, translation mechanism includes:
the screw rod is rotatably arranged below the workbench, two thread sections with opposite rotation directions are arranged on the screw rod, and each thread section is in threaded connection with a sliding block;
the two connecting shafts are L-shaped, the first end of each connecting shaft penetrates through the bracket and then is connected with the corresponding clamping plate, and the second end of each connecting shaft penetrates through the sliding groove on the workbench and then is connected with the corresponding sliding block;
and the hand wheel is arranged at one end of the screw rod.
The utility model discloses a further improvement lies in, it constructs to be provided with swager on the sword to cut.
The utility model discloses a further improvement lies in, swager constructs and includes:
the upper part of the top plate is connected with the end part of the piston rod of the hydraulic cylinder, and the middle part of the lower part of the top plate is provided with the cutting knife;
two clamp plates, the symmetry set up in cut sword both sides, every the clamp plate through a plurality of springs with the roof below is connected, and under the spring natural state, the clamp plate position is less than and cuts the sword knife tip.
The utility model discloses a further improvement lies in, the blanking mouth below is provided with the collecting box.
Since the technical scheme is used, the utility model discloses the technological progress who gains is:
the utility model provides a can collect cutting device is used in production of decoration body paper of waste material, align the material through utilizing two splint, prevent that the material from taking place the skew, so that follow-up cutting, and cut the back that finishes, second drive component drive push pedal, can be with waste material propelling movement after cutting to the Luo blanking mouth department, the cylinder of recycling is opened the returning face plate, the waste material is then discharged to the collecting box in, the mechanism is simple, need not artifical clearance, the simple operation and collection efficiency are high, the security is good, the staff recycle waste material of being convenient for, do benefit to popularization and application.
The cylinder is through the swing of drive returning face plate second end articulated second connecting rod to drive the returning face plate and rotate, because the returning face plate side is articulated with the blanking mouth lateral wall, can be so that the returning face plate overturn downwards along the blanking mouth, open the blanking mouth, the waste material then under the effect of push pedal, in the collecting box of unified propelling movement to blanking mouth below, the device operation is stable, easily realize, receives material efficiently.
When materials are cut, the decorative base paper is soft, so that in order to avoid damaging paper, the pressing mechanism is utilized to compress two side areas of the base paper to be cut, the cutting effect is improved, the paper is prevented from being damaged during cutting due to the wrinkles of the base paper, and the cutting quality is reduced; and swager constructs utilizes the spring to drive the clamp plate, can realize that elasticity compresses tightly the material, can not cause to push down the cracked problem of paper that leads to the overweight, and the practicality is strong, is favorable to improving cutting efficiency, satisfies the production needs.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a schematic view of the overall structure of the cutting device of the present invention;
fig. 2 is a schematic view of a portion of the enlarged structure at a in fig. 1 according to the present invention;
fig. 3 is a schematic view of a portion of the enlarged structure at B of fig. 1 according to the present invention;
FIG. 4 is a schematic side view of the cutting device of the present invention;
fig. 5 is a schematic structural diagram of the first driving member according to the present invention;
description of the reference numerals:
10. the device comprises a workbench, 101, a sliding chute, 11, a support, 111, a guide rail, 12, a hydraulic cylinder, 13, a cutting knife, 14, a blanking port, 15, a turnover plate, 16, a sliding rail, 17, a push rod, 171, a long slotted hole, 18, a push plate, 19, a collecting box, 21, a cylinder, 22, a first connecting rod, 30, a second driving component, 31, a motor, 32, a second connecting rod, 40, a clamping plate, 41, a screw rod, 42, a sliding block, 43, a connecting shaft, 44, a hand wheel, 50, a material pressing mechanism, 51, a top plate, 52, a pressing plate, 53 and a spring.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system architectures and techniques, in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
The utility model provides a pair of can collect cutting device is used in production of decoration body paper of waste material can know according to description attached drawing 1 to figure 5, a can collect cutting device is used in production of decoration body paper of waste material includes: the cutting device comprises a workbench 10, a cutting knife 13, a blanking port 14, a turnover plate 15, a slide rail 16 and a push rod 17. Wherein, a door-shaped bracket 11 is arranged on the worktable 10; the cutting knife 13 is arranged in the bracket 11 in a lifting way under the driving of the hydraulic cylinder 12; the blanking port 14 is arranged on the workbench 10 in front of the cutting knife 13; the turnover plate 15 is openably and closably disposed in the blanking port 14 by a first driving means, and discharges the waste to a lower side of the table 10.
The slide rail 16 is arranged on the workbench 10 behind the cutting knife 13 along the material advancing direction; the push rod 17 slides along the slide rail 16 under the action of the second driving member 30, a push plate 18 is arranged at the first end of the push rod 17 close to the cutting knife 13, and when the push rod 17 slides towards the direction close to the cutting knife 13, the push plate 18 can push the cut waste materials to the turnover plate 15. Specifically, the pushing plate 18 is used for pushing the waste materials to the blanking port 14, and when the turnover plate 15 is opened, the waste materials are uniformly discharged.
As an example, as can be seen from fig. 5 in the specification, the first driving member includes a cylinder 21 and a first connecting rod 22 provided at an end of a piston rod thereof; the first end of the turnover plate 15 is hinged to the side wall of the blanking port 14, a first connecting rod 22 is hinged to the lower portion of the second end of the turnover plate 15, the free end of the first connecting rod 22 is hinged to the end portion of a piston rod of an air cylinder 21 arranged below the workbench 10, and when the piston rod of the air cylinder 21 stretches out and draws back, the first connecting rod 22 can drive the turnover plate 15 to be opened and closed.
Specifically, 15 first ends of returning face plate can be its lateral wall middle part, also can be the tip, and the second end is another tip that 15 are relative of returning face plate to both ends are all in same one side, and the cylinder 21 cylinder body is articulated with workstation 10 lower surface, can make cylinder 21 open 15 more conveniently like this, the timely blanking of being convenient for.
In this embodiment, as can be seen from fig. 1 and 3 of the specification, the second driving member 30 includes a motor 31 and a second link 32 disposed at an output end thereof, and a guide post disposed at a free end of the second link 32 is slidably connected to the slot 171 of the second end of the push rod 17.
Specifically, when cutting is completed, the second connecting rod 32 can be driven to rotate by the motor 31, so that the guide column of the second connecting rod 32 drives the push rod 17 to perform reciprocating translation, the push plate 18 is driven to perform reciprocating translation and push materials, waste materials below the cutting knife 13 can be pushed onto the turnover plate 15 conveniently, the turnover plate 15 is driven to rotate through the cylinder 21 to open the blanking port 14, blanking collection is facilitated, after cleaning is completed, the piston rod of the driving cylinder 21 extends out, the turnover plate 15 is driven to reset, and the mechanism is convenient to use and high in material receiving efficiency.
As an embodiment, as can be seen from fig. 1 and 2 of the specification, the inner walls of both sides of the bracket 11 are provided with guide rails 111, and the two guide rails 111 are slidably connected to both ends of the cutting blade 13. Specifically, the guide rail 111 is used for guiding the cutting knife 13 when the cutting knife is lifted, so that the cutting is more accurate and the deviation is avoided.
In this embodiment, as can be seen from fig. 1 in the specification, two clamping plates 40 are symmetrically arranged on the workbench 10 on both sides of the material advancing direction, the two clamping plates 40 are close to or away from each other under the driving of the translation mechanism, specifically, the clamping plates 40 are used for righting the material, so as to prevent the material from being cut inaccurately due to the material deviation, and prevent the material from being damaged.
In this embodiment, as can be seen from fig. 2 of the specification, two clamping plates 40 are located in the brackets 11 on both sides of the cutting knife 13, specifically, the clamping plates 40 are located below the guide rail 111, and can be retracted and away from the cutting area during cutting, so that the cutting operation is not affected.
In this embodiment, as can be seen from fig. 4 of the specification, the translation mechanism includes: the device comprises a screw rod 41, two connecting shafts 43 and a hand wheel 44, wherein the screw rod 41 is rotatably arranged below the workbench 10, two thread sections with opposite rotating directions are arranged on the screw rod 41, and a sliding block 42 is in threaded connection with each thread section; the two connecting shafts 43 are L-shaped, the first end of each connecting shaft 43 penetrates through the bracket 11 and then is connected with the corresponding clamping plate 40, and the second end penetrates through the sliding groove 101 on the workbench 10 and then is connected with the corresponding sliding block 42; the hand wheel 44 is disposed at one end of the screw rod 41 for driving the screw rod to rotate, and the positions of the two clamping plates 40 on the worktable 10 can be flexibly adjusted to adapt to materials of different specifications, and meanwhile, the cutting area can be timely kept away after the adjustment, so that the cutting knife 13 is prevented from being damaged.
As an embodiment, as can be seen from fig. 1 in the specification, the pressing mechanism 50 is disposed on the cutting knife 13, so as to press and fix the material before cutting, and prevent the material from wrinkling or deviating, so as to avoid affecting the cutting quality.
In this embodiment, as can be seen from fig. 1 and 4 of the specification, the pressing mechanism 50 includes: a top plate 51 and two pressure plates 52, wherein the upper part of the top plate 51 is connected with the end part of a piston rod of the hydraulic cylinder 12, and the middle part of the lower part is provided with a cutting knife 13; the two pressing plates 52 are symmetrically arranged at two sides of the cutting knife 13, each pressing plate 52 is connected with the lower part of the top plate 51 through a plurality of springs 53, and in a natural state of the springs 53, the positions of the pressing plates 52 are lower than the knife edge of the cutting knife 13.
Specifically, the bottom surface of the pressing plate 52 is provided with a rubber coating, so that the friction force between the pressing plate 52 and the material can be increased, the stability of pressing the material is improved, the hydraulic cylinder 12 drives the pressing plate 52 to descend along with the cutting knife 13 in the cutting process, the two pressing plates 52 are enabled to cut the material compacted in advance, the cutting effect is effectively improved, the manual work is not needed, the safety is high, after the cutting is finished, the pressing plate 52 rises along with the cutting knife 13 synchronously, the occupied space is small, and the operation is facilitated.
As an example, according to the description of fig. 1, a collection box 19 is provided below the blanking opening 14 for collecting waste impurities.
It should be noted that, in the present patent application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," comprising, "or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus, and the phrase" comprising a.once.a.limited element does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a can collect cutting device is used in production of decoration body paper of waste material which characterized in that includes:
the workbench is provided with a door-shaped bracket;
the cutting knife is arranged in the bracket in a lifting manner under the driving of a hydraulic cylinder;
the blanking port is arranged on the workbench in front of the cutting knife;
the turnover plate is arranged in the blanking port in an openable and closable manner under the action of the first driving member;
the sliding rail is arranged on the workbench behind the cutting knife along the material advancing direction;
the push rod, under the second drive component effect, follow the slide rail slides, is close to the push rod first end that cuts the sword is provided with the push pedal, works as the push rod to being close to when cutting the sword direction and sliding, the push pedal can with the waste material propelling movement after cutting extremely on the returning face plate.
2. The cutting device for producing decorative base paper capable of collecting waste materials as claimed in claim 1, wherein the first driving member comprises a cylinder and a first connecting rod arranged at the end of a piston rod of the cylinder;
the first end of the turnover plate is hinged to the side wall of the blanking port, the first connecting rod is hinged to the lower portion of the second end of the turnover plate, the free end of the first connecting rod is hinged to the end portion of a piston rod of an air cylinder arranged below the workbench, and the turnover plate can be driven to be opened and closed through the first connecting rod when the piston rod of the air cylinder stretches out and draws back.
3. The cutting device as claimed in claim 2, wherein the second driving member comprises a motor and a second connecting rod disposed at an output end of the motor, and a guide post disposed at a free end of the second connecting rod is slidably connected to the slot hole of the second end of the pushing rod.
4. The cutting device for producing decorative base paper capable of collecting waste materials as claimed in claim 1, wherein the inner walls of the two sides of the support are provided with guide rails, and the two guide rails are respectively connected with two ends of the cutting knife in a sliding manner.
5. The cutting device for producing decorative base paper capable of collecting waste materials according to claim 4, wherein two clamping plates are symmetrically arranged on the workbench on two sides of the material advancing direction, and the two clamping plates are driven by the translation mechanism to approach or separate from each other.
6. The cutting device for producing decorative base paper capable of collecting waste material as claimed in claim 5, wherein two clamping plates are located in the brackets at both sides of the cutting knife.
7. The cutting device for producing decorative base paper capable of collecting waste materials according to claim 6, wherein the translation mechanism comprises:
the screw rod is rotatably arranged below the workbench, two thread sections with opposite rotation directions are arranged on the screw rod, and each thread section is in threaded connection with a sliding block;
the two connecting shafts are L-shaped, the first end of each connecting shaft penetrates through the bracket and then is connected with the corresponding clamping plate, and the second end of each connecting shaft penetrates through the sliding groove on the workbench and then is connected with the corresponding sliding block;
and the hand wheel is arranged at one end of the screw rod.
8. The cutting device for producing decorative base paper capable of collecting waste materials according to claim 1, wherein a pressing mechanism is arranged on the cutting knife.
9. The cutting device for producing decorative base paper capable of collecting waste materials according to claim 8, wherein the pressing mechanism comprises:
the upper part of the top plate is connected with the end part of the piston rod of the hydraulic cylinder, and the middle part of the lower part of the top plate is provided with the cutting knife;
the two pressing plates are symmetrically arranged on two sides of the cutting knife, each pressing plate is connected with the lower portion of the top plate through a plurality of springs, and the positions of the pressing plates are lower than the knife tip of the cutting knife in a natural state of the springs.
10. The cutting device for producing decorative base paper capable of collecting waste materials according to any one of claims 1 to 9, wherein a collection box is arranged below the blanking opening.
CN202222254683.6U 2022-08-26 2022-08-26 Cutting device for producing decorative base paper capable of collecting waste materials Active CN218398359U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222254683.6U CN218398359U (en) 2022-08-26 2022-08-26 Cutting device for producing decorative base paper capable of collecting waste materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222254683.6U CN218398359U (en) 2022-08-26 2022-08-26 Cutting device for producing decorative base paper capable of collecting waste materials

Publications (1)

Publication Number Publication Date
CN218398359U true CN218398359U (en) 2023-01-31

Family

ID=85027454

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222254683.6U Active CN218398359U (en) 2022-08-26 2022-08-26 Cutting device for producing decorative base paper capable of collecting waste materials

Country Status (1)

Country Link
CN (1) CN218398359U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116237803A (en) * 2023-03-28 2023-06-09 佛山市通宝华龙控制器有限公司 Incomplete roll processing apparatus of bimetal disc

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116237803A (en) * 2023-03-28 2023-06-09 佛山市通宝华龙控制器有限公司 Incomplete roll processing apparatus of bimetal disc
CN116237803B (en) * 2023-03-28 2023-11-10 佛山市通宝华龙控制器有限公司 Incomplete roll processing apparatus of bimetal disc

Similar Documents

Publication Publication Date Title
CN218398359U (en) Cutting device for producing decorative base paper capable of collecting waste materials
CN109468074A (en) A kind of refrigerator press closures patch sponge strip tape system
CN112918732A (en) Carton packing seals robot
CN220096909U (en) Unpacking device for cigarette box
CN220007886U (en) Butyl rubber plug production cutting device
CN210589971U (en) Glass processing cutting device
CN210161223U (en) Novel fiber reinforced material cuts device
CN209986990U (en) Cutting device for antibacterial packaging film
CN110775369A (en) Sealing device for degradable film
CN106584611A (en) Integrated type blockboard splicing device
CN216882617U (en) Automatic slice pulling machine for manufacturing knife rest
CN211333693U (en) Automatic peeling machine for wickers for wickerwork
CN212602027U (en) Edge paper cutting and collecting device for digital printing technology
CN215431254U (en) Blanking workbench of plate shearing machine
CN214419471U (en) Injection molding mouth of a river excision equipment
CN212763659U (en) Rubber product cutting device with waste collection function
CN220030562U (en) Edge bonding machine capable of precisely bonding edges
CN212919571U (en) Adjustable cutting table for plastic products
CN219567534U (en) Barrel opening device
CN215660495U (en) Corrugated paper cutting device capable of collecting cutting paper scraps
CN215791915U (en) Waste recovery device is used in paper cup production and processing
CN213350990U (en) Numerical control plate cutting machine
CN213704233U (en) Demoulding mechanism for plastic mould processing
CN216328893U (en) Timber processingequipment who cuts edge fast
CN219170166U (en) Clamping device for cutting stainless steel bar

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant