CN219359899U - Swing mechanism for clamping silicon rod - Google Patents

Swing mechanism for clamping silicon rod Download PDF

Info

Publication number
CN219359899U
CN219359899U CN202223460624.0U CN202223460624U CN219359899U CN 219359899 U CN219359899 U CN 219359899U CN 202223460624 U CN202223460624 U CN 202223460624U CN 219359899 U CN219359899 U CN 219359899U
Authority
CN
China
Prior art keywords
clamping
silicon rod
assembly
connecting shaft
mounting
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
CN202223460624.0U
Other languages
Chinese (zh)
Inventor
蔡震
刘秀坤
李斌全
薛柏惠
赵锐
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.)
Linton Technologies Group
Original Assignee
Linton Technologies Group
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 Linton Technologies Group filed Critical Linton Technologies Group
Priority to CN202223460624.0U priority Critical patent/CN219359899U/en
Application granted granted Critical
Publication of CN219359899U publication Critical patent/CN219359899U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

The utility model relates to a rotation mechanism for clamping a silicon rod, which comprises a silicon rod supporting base, a driving component and a clamping component. The driving component is fixedly arranged on the silicon rod supporting base, is fixedly connected with the clamping component and can drive the clamping component to rotate or lift around the axis of the clamping component so as to compress the silicon rod. The clamping assembly connected with the silicon rod is driven by the driving assembly to rotate so as to give way in the process of placing the silicon rod, and the clamping assembly is driven by the driving assembly to rotate to the upper side of the silicon rod after the silicon rod is placed, and then moves downwards so as to compress the silicon rod. Solves the problems of limited placement of the silicon rod and complex placement process of the silicon rod, and is convenient for cutting off the silicon rod.

Description

Swing mechanism for clamping silicon rod
Technical Field
The utility model relates to a silicon workpiece processing equipment technical field especially relates to a swing mechanism for silicon rod clamping.
Background
After the production of the silicon rod, the whole silicon rod needs to be cut off, the silicon rod is divided into silicon rod units with required specification length, and other procedures such as squaring and polishing are carried out on each silicon rod unit.
In the procedure of cutting the silicon rod, the silicon rod is required to be placed on a processing platform and then clamped by a clamping mechanism. At present, the existing clamping mechanism is arranged on a processing platform, the height of a clamping head of the clamping mechanism is adjusted to be high in an initial state, and a space between the clamping head and a silicon rod supporting base on the processing platform is used for placing a silicon rod. The existing clamping head only can be lifted up and down to clamp the silicon rod, the rotation angle of the clamping head cannot be adjusted, the silicon rod can be inserted into the space between the silicon rod supporting base and the clamping mechanism from one side of the processing platform, and the silicon rod is clamped by the clamping head, so that the placing process of the silicon rod is complex, and the cutting-off of the silicon rod is inconvenient.
Disclosure of Invention
First, the technical problem to be solved
In view of the above-mentioned shortcoming and deficiency of the prior art, the utility model provides a rotation mechanism for silicon rod clamping, it has solved current clamping head and only can go up and down to press from both sides tight silicon rod, can't adjust the rotation angle who presss from both sides tight head, thereby leads to the placing of silicon rod limited, and the placing process of silicon rod is complicated, the technical problem of the cut-off of the silicon rod of being inconvenient for.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted in the present utility model includes:
the swing mechanism for clamping the silicon rod comprises a silicon rod supporting base, a driving assembly and a clamping assembly;
the driving assembly is fixedly arranged on the silicon rod supporting base, the driving assembly is fixedly connected with the clamping assembly, and the driving assembly can drive the clamping assembly to rotate or lift around the axis of the clamping assembly so as to compress the silicon rod.
Optionally, the driving assembly comprises a housing body, a driving cylinder, a guide rod and a guide wheel;
the guide rod is fixedly arranged on the silicon rod supporting base; the outer side wall of the guide rod is sequentially provided with a spiral groove and a vertical chute which are communicated with the inner cavity of the guide rod from top to bottom, and the spiral groove is communicated with the vertical chute to form a sliding channel;
the shell main body is positioned below the guide rod, the shell main body is fixedly arranged on the silicon rod supporting base, the fixed end of the driving cylinder is fixedly arranged in the inner cavity of the shell main body, and the extending end of the driving cylinder extends vertically and can extend to the inner cavity of the guide rod after extending out of the shell main body;
the clamping assembly can rotate around the axis of the clamping assembly and is connected with the extending end of the driving cylinder, the guide wheel is arranged on the clamping assembly and can be arranged in the sliding channel in a sliding way, so that the clamping assembly is driven to rotate around the axis of the clamping assembly or lift.
Optionally, the included angle between the tangent line of the spiral groove and the horizontal plane is 45 ° -60 °.
Optionally, the guide rod and the housing main body are fixedly mounted on the silicon rod support base through the mounting assembly.
Optionally, the mounting assembly includes a mounting base, a mounting bracket, and two mounting blocks;
the mounting base is fixedly connected with the shell main body and the silicon rod supporting base;
the mounting bracket is arranged at one end of the top of the mounting base in the vertical direction;
the two mounting blocks are detachably connected to one side wall of the mounting bracket, and the two mounting blocks are respectively sleeved at the upper end and the lower end of the guide rod.
Optionally, the device further comprises an elastic protective cover, wherein the elastic protective cover is sleeved outside the driving cylinder, and two ends of the elastic protective cover are respectively abutted against the mounting blocks and the mounting base below the two mounting blocks.
Optionally, the clamping assembly comprises a connecting shaft, a compacting plate and a clamping head;
the connecting shaft is inserted into the inner cavity of the guide rod, the connecting shaft can rotate around the axis of the connecting shaft and is connected with the extending end of the driving cylinder, and the guide wheel is arranged on the side wall of the connecting shaft;
the clamping head is characterized in that the clamping plate is horizontally arranged at the top of the connecting shaft, one end of the clamping plate is fixedly connected with the connecting shaft, and the other end of the clamping plate is fixedly provided with the clamping head.
Optionally, the bottom of the clamping head is of an inward concave arc shape.
Optionally, a bump is provided on the top of the compacting plate, and the bump is disposed along the longitudinal extension of the compacting plate.
Optionally, the driving cylinder can drive the connecting shaft to lift, when the guide wheel on the connecting shaft rotates along the spiral groove, the guide wheel drives the connecting shaft to rotate around the axis of the connecting shaft, so that the connecting shaft drives the compacting plate and the clamping head to synchronously rotate, and the rotation range of the clamping head is 0-90 degrees.
(III) beneficial effects
The beneficial effects of this novel are: the utility model relates to a rotation mechanism is used in silicon rod clamp, through the clamping component that drive assembly drive links to each other with it and can rotate to place the in-process at the silicon rod, rotatory in order to step down, place the back at the silicon rod and rotate to its top through the clamping component of drive assembly drive, the motion is in order to compress tightly the silicon rod down again. Solves the problems of limited placement of the silicon rod and complex placement process of the silicon rod, and is convenient for cutting off the silicon rod.
Drawings
FIG. 1 is a schematic perspective view of a novel silicon rod clamping rotary mechanism for clamping silicon rods;
FIG. 2 is a schematic perspective view of a swing mechanism for clamping the novel silicon rod;
FIG. 3 is an enlarged detailed schematic view of FIG. 2 at A;
fig. 4 is a schematic cross-sectional view of the swing mechanism for clamping the silicon rod of the present utility model.
[ reference numerals description ]
1: a drive assembly; 11: a housing main body; 12: a driving cylinder; 13: a guide rod; 131: a spiral groove; 132: a vertical chute; 14: a guide wheel; 2: a clamping assembly; 21: a connecting shaft; 22: a compacting plate; 221: a bump; 23: a clamping head; 3: a mounting assembly; 31: a mounting base; 32: a mounting bracket; 33: a mounting block; 4: an elastic protective cover; a: a silicon rod supporting base; b: a silicon rod.
Detailed Description
For a better explanation of the present utility model, for easy understanding, the present utility model will be described in detail below by way of specific embodiments with reference to the accompanying drawings. Wherein references herein to "upper", "lower", "left", "right", "front" and "rear" are made with reference to the orientation of fig. 1. The side of the silicon rod support base a in fig. 1 is defined as "down"; the side of the swing mechanism opposite to the silicon rod b is defined as "right".
Referring to fig. 1-4, a swing mechanism for clamping a silicon rod according to the present embodiment includes a silicon rod supporting base a, and further includes a driving component 1 and a clamping component 2.
Further, the driving assembly 1 is fixedly mounted on the silicon rod supporting base a. The driving assembly 1 includes a housing main body 11, a driving cylinder 12, a guide bar 13, and a guide wheel 14.
In this embodiment, the guide rod 13 is fixedly mounted on the silicon rod support base a. The outer side wall of the guide rod 13 is sequentially provided with a spiral groove 131 and a vertical chute 132 which are communicated with the inner cavity of the guide rod from top to bottom, and the spiral groove 131 and the vertical chute 132 are communicated to form a sliding channel.
Further, the angle between the tangent of the spiral groove 131 and the horizontal is in the range of 45 ° -60 °. It should be noted that, when the driving cylinder 12 can drive the connecting shaft 21 to lift and lower and the guide wheel 14 on the connecting shaft 21 can rotate along the spiral groove 131, the guide wheel 14 drives the connecting shaft 21 to rotate around its own axis relative to the guide rod 13, so that the connecting shaft 21 drives the compacting plate 22 and the clamping head 23 to synchronously rotate, and the rotation range of the clamping head 23 is 0 ° -90 °. When the connecting shaft 21 rotates 90 ° clockwise along the axis thereof, after the silicon rod b placed on the silicon rod supporting base a is at a stable position, the connecting shaft 21 is at a height higher than the silicon rod b, and rotates just above the silicon rod b, and then the driving cylinder 12 can drive the connecting shaft 21 to lift up and down along the vertical chute 132, so that the pressing head 23 presses the silicon rod b. It should be noted that, the clamping head 23 in this embodiment can rotate from one side of the silicon rod b to give way and clamp the feeding of the silicon rod b, so that the clamping effect is better while the feeding is facilitated, and the silicon rod b is completely pressed from the right upper side of the silicon rod b.
Specifically, the casing main body 11 is located below the guide rod 13, the casing main body 11 is fixedly mounted on the silicon rod supporting base a, the fixed end of the driving cylinder 12 is fixedly mounted in the inner cavity of the casing main body 11, and the extending end of the driving cylinder 12 extends vertically upwards and can extend out of the casing main body 11 and then extend to the inner cavity of the guide rod 13. The guide rod 13 is fixedly mounted on the silicon rod supporting base a through a mounting bracket 32.
The clamping assembly 2 can rotate around the axis of the clamping assembly 2 and is connected with the extending end of the driving cylinder 12, the guide wheel 14 is arranged on the clamping assembly 2, and the guide wheel 14 can be arranged in the sliding channel in a sliding way to drive the clamping assembly 2 to rotate around the axis of the clamping assembly or lift.
Further, the silicon rod supporting base comprises a mounting assembly 3, and the guide rod 13 and the shell main body 11 are fixedly mounted on the silicon rod supporting base a through the mounting assembly 3. Specifically, the installation component 3 can be fixed with the both ends of guide bar 13, and with guide bar 13 fixed mounting on silicon rod support base a, the bottom and the shell main part 11 top fixed connection of installation component 3 for with shell main part 11 fixed mounting on silicon rod support base a.
Further, the mounting assembly 3 comprises a mounting base 31, a mounting bracket 32 and two mounting blocks 33.
In the present embodiment, the mounting base 31 fixedly connects the housing main body 11 and the silicon rod supporting base a. Specifically, the installation base 31 is horizontally disposed on the silicon rod supporting base a, one end of the bottom of the installation base 31 is fixedly connected with the housing main body 11, and one end of the bottom of the installation base 31 is fixedly connected with the silicon rod supporting base a. The mounting bracket 32 is disposed at one end of the top of the mounting base 31 in a vertical direction. The two mounting blocks 33 are detachably connected to a side wall of the mounting bracket 32, and the two mounting blocks 33 are respectively sleeved at the upper end and the lower end of the guide rod 13.
Further, the device further comprises an elastic protection cover 4, the elastic protection cover 4 is sleeved outside the driving cylinder 12, and two ends of the elastic protection cover 4 are respectively propped against the mounting blocks 33 and the mounting base 31 which are positioned below the two mounting blocks 33. The elastic protective cover 4 can play a role in buffering and damping when the clamping head 23 rotates and lifts, and improves the clamping stability of the silicon rod b.
The driving component 1 is fixedly connected with the clamping component 2, and the driving component 1 can drive the clamping component 2 to rotate or lift around the axis of the driving component to compress the silicon rod b.
It should be noted that, when the silicon rod b is clamped, the clamping head 23 of the clamping assembly 2 is required to have a height higher than the top of the silicon rod b. During the compaction, the link shaft 21 is driven downward by the driving cylinder 12 to clamp the silicon rod b.
Further, the clamping assembly 2 comprises a connecting shaft 21, a compacting plate 22 and a clamping head 23. The connecting shaft 21 is inserted into the inner cavity of the guide rod 13, the connecting shaft 21 can rotate around the axis of the connecting shaft 21 and is connected with the extending end of the driving cylinder 12, and the guide wheel 14 is arranged on the peripheral side wall of the connecting shaft 21. The hold-down plate 22 is the level setting in the top of connecting axle 21, and the one end and the connecting axle 21 fixed connection of hold-down plate 22, the other end fixed mounting clamp head 23 of hold-down plate 22.
Further, the bottom of the clamping head 23 is an inwardly concave circular arc. In order to increase the contact area with the cylindrical material, the clamping effect is better.
Further, the top of the compacting plate 22 is provided with a bump 221, and the bump 221 is disposed along the longitudinal extension of the compacting plate 22. Is convenient for manual adjustment and installation.
The embodiment provides a swing mechanism for clamping a silicon rod, which drives a clamping assembly 2 connected with the swing mechanism through a driving assembly 1 and can rotate so as to enable the clamping assembly 2 to rotate to give way in the process of placing a silicon rod b, and the clamping assembly 2 is driven to rotate to the upper side through the driving assembly 1 after the silicon rod b is placed, and then moves downwards to press the silicon rod b. Solves the problems of limited placement of the silicon rod b and complex placement process of the silicon rod, and is convenient for cutting off the silicon rod.
In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present utility model will be understood by those skilled in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.
In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., refer to a particular feature, structure, material, or characteristic described in connection with the embodiment or example as being included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the present novel embodiment has been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the present utility model, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those of ordinary skill in the art within the scope of the present utility model.

Claims (10)

1. The utility model provides a rotation mechanism for silicon rod clamping, includes silicon rod support base (a), its characterized in that: the device also comprises a driving component (1) and a clamping component (2);
the driving assembly (1) is fixedly arranged on the silicon rod supporting base (a), the driving assembly (1) is fixedly connected with the clamping assembly (2), and the driving assembly (1) can drive the clamping assembly (2) to rotate or lift around the axis of the clamping assembly to compress the silicon rod (b).
2. The swing mechanism for clamping a silicon rod as defined in claim 1 wherein: the driving assembly (1) comprises a shell main body (11), a driving cylinder (12), a guide rod (13) and a guide wheel (14);
the guide rod (13) is fixedly arranged on the silicon rod supporting base (a); the outer side wall of the guide rod (13) is sequentially provided with a spiral groove (131) and a vertical chute (132) which are communicated with the inner cavity of the guide rod from top to bottom, and the spiral groove (131) and the vertical chute (132) are communicated to form a sliding channel;
the shell main body (11) is positioned below the guide rod (13), the shell main body (11) is fixedly arranged on the silicon rod supporting base (a), the fixed end of the driving air cylinder (12) is fixedly arranged in the inner cavity of the shell main body (11), and the extending end of the driving air cylinder (12) extends vertically and can extend out of the shell main body (11) to the inner cavity of the guide rod (13);
the clamping assembly (2) can be connected with the extending end of the driving cylinder (12) around the axis of the clamping assembly, the guide wheel (14) is arranged on the clamping assembly (2), and the guide wheel (14) can be arranged in the sliding channel in a sliding way along the sliding way so as to drive the clamping assembly (2) to rotate around the axis of the clamping assembly or lift.
3. The swing mechanism for clamping a silicon rod as defined in claim 2, wherein: the included angle between the tangent line of the spiral groove (131) and the horizontal plane is 45-60 degrees.
4. The swing mechanism for clamping a silicon rod as defined in claim 3 wherein: the silicon rod supporting device is characterized by further comprising a mounting assembly (3), wherein the guide rod (13) and the shell main body (11) are fixedly mounted on the silicon rod supporting base (a) through the mounting assembly (3).
5. The swing mechanism for clamping a silicon rod as defined in claim 4 wherein: the mounting assembly (3) comprises a mounting base (31), a mounting bracket (32) and two mounting blocks (33);
the mounting base (31) is fixedly connected with the shell main body (11) and the silicon rod supporting base (a);
the mounting bracket (32) is arranged at one end of the top of the mounting base (31) in the vertical direction;
the two mounting blocks (33) are detachably connected to one side wall of the mounting bracket (32), and the two mounting blocks (33) are respectively sleeved at the upper end and the lower end of the guide rod (13).
6. The swing mechanism for clamping a silicon rod as defined in claim 5 wherein: the device further comprises an elastic protection cover (4), wherein the elastic protection cover (4) is sleeved outside the driving cylinder (12), and two ends of the elastic protection cover (4) are respectively abutted against the mounting blocks (33) and the mounting base (31) which are positioned below the two mounting blocks (33).
7. The swing mechanism for clamping a silicon rod as defined in claim 2, wherein: the clamping assembly (2) comprises a connecting shaft (21), a pressing plate (22) and a clamping head (23);
the connecting shaft (21) is inserted into the inner cavity of the guide rod (13), the connecting shaft (21) can rotate around the axis of the connecting shaft and is connected with the extending end of the driving cylinder (12), and the guide wheel (14) is arranged on the side wall of the connecting shaft (21);
the clamping head is characterized in that the clamping plate (22) is horizontally arranged at the top of the connecting shaft (21), one end of the clamping plate (22) is fixedly connected with the connecting shaft (21), and the other end of the clamping plate (22) is fixedly provided with the clamping head (23).
8. The swing mechanism for clamping a silicon rod as defined in claim 7 wherein: the bottom of the clamping head (23) is an inward concave arc.
9. The swing mechanism for clamping a silicon rod as set forth in claim 8 wherein: the top of the compaction plate (22) is provided with a lug (221), and the lug (221) is arranged along the longitudinal extension of the compaction plate (22).
10. The swing mechanism for clamping a silicon rod as set forth in claim 9 wherein: the driving cylinder (12) can drive the connecting shaft (21) to lift, when the guide wheel (14) on the connecting shaft (21) rotates along the spiral groove (131), the guide wheel (14) drives the connecting shaft (21) to rotate around the axis of the connecting shaft, so that the connecting shaft (21) drives the compacting plate (22) and the clamping head (23) to synchronously rotate, and the rotating range of the clamping head (23) is 0-90 degrees.
CN202223460624.0U 2022-12-23 2022-12-23 Swing mechanism for clamping silicon rod Active CN219359899U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223460624.0U CN219359899U (en) 2022-12-23 2022-12-23 Swing mechanism for clamping silicon rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223460624.0U CN219359899U (en) 2022-12-23 2022-12-23 Swing mechanism for clamping silicon rod

Publications (1)

Publication Number Publication Date
CN219359899U true CN219359899U (en) 2023-07-18

Family

ID=87118236

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223460624.0U Active CN219359899U (en) 2022-12-23 2022-12-23 Swing mechanism for clamping silicon rod

Country Status (1)

Country Link
CN (1) CN219359899U (en)

Similar Documents

Publication Publication Date Title
CN211840778U (en) Welding robot loading attachment based on auto-parts production
CN219359899U (en) Swing mechanism for clamping silicon rod
CN215845013U (en) Copper bar bending device
CN211680555U (en) Laser cutting machine is used in thermos cup processing
CN219581502U (en) Stamping die for automobile parts
CN213277789U (en) Coil press machine for producing epoxy resin cast dry-type transformer
CN212372022U (en) Rotary pressing device
CN214161013U (en) Hardware mould with automatic feeding function
CN216884299U (en) Efficient abrasive paper production is with tailorring device
CN221185388U (en) Welding fixture for upper cover of harvester roller and harvester
CN218660998U (en) UV curing device is used in capsule printing
CN214566376U (en) Automatic device of wrapping of building engineering cable conductor
CN217393601U (en) Electromechanical engineering wire cutting device with positioning function
CN220497959U (en) Adjustable cutting device is used in metal casting production
CN220480368U (en) Quick cutting device for edge die machining
CN212470616U (en) Automobile parts production is with pressing from both sides tight fixing device
CN216229689U (en) Rubber sizing material preforming production facility
CN217727965U (en) Aluminum product cutting equipment with inclination location
CN219163206U (en) Capacitor stitch trimming device
CN217595766U (en) A cut device for nonrust steel wire
CN214646000U (en) Hot melting device of lid nut behind cell-phone
CN216180854U (en) Tire is used for processing quick-assembling tire's splicer
CN218134649U (en) Car seat spring forming tool
CN221227322U (en) Motor stator coil shaper
CN215658183U (en) Workpiece pressing structure of metal circular sawing machine

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant