CN218193951U - Clamping, positioning and transferring structure - Google Patents

Clamping, positioning and transferring structure Download PDF

Info

Publication number
CN218193951U
CN218193951U CN202222157963.5U CN202222157963U CN218193951U CN 218193951 U CN218193951 U CN 218193951U CN 202222157963 U CN202222157963 U CN 202222157963U CN 218193951 U CN218193951 U CN 218193951U
Authority
CN
China
Prior art keywords
clamping
transfer device
positioning
transfer
driver
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
CN202222157963.5U
Other languages
Chinese (zh)
Inventor
旷鑫
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.)
Dongguan Chenxin Automation Equipment Co ltd
Original Assignee
Dongguan Chenxin Automation Equipment 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 Dongguan Chenxin Automation Equipment Co ltd filed Critical Dongguan Chenxin Automation Equipment Co ltd
Priority to CN202222157963.5U priority Critical patent/CN218193951U/en
Application granted granted Critical
Publication of CN218193951U publication Critical patent/CN218193951U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Jigs For Machine Tools (AREA)

Abstract

The utility model relates to the technical field of pipe material conveying, in particular to a clamping, positioning and transferring structure, which comprises a machine table, wherein a clamping device and a transferring device are arranged on the machine table, the clamping device comprises a clamping table, the bottom of the clamping table is fixedly connected with the machine table, the top of the clamping table is provided with a positioning block and a tightening mechanism, the positioning block is fixed on one side of the clamping table, and the output end of the tightening mechanism faces the positioning block and is fixedly connected with the clamping table; the transfer device comprises a first transfer device and a second transfer device, the first transfer device is fixedly connected with the machine table, the output end of the first transfer device faces the clamping table, the fixed end of the second transfer device is fixedly connected with one end of the clamping table, which is far away from the first transfer device, and the output end of the second transfer device slides between the positioning block and the output end of the abutting mechanism. The utility model discloses a clamping device and transfer device cooperation, the pipe material transport work is accomplished to the efficient, and is easy and simple to handle, and conveying efficiency is high, accords with the processing demand.

Description

Clamping, positioning and transferring structure
Technical Field
The utility model relates to a technical field is carried to the pipe material, especially relates to a structure is transferred in centre gripping location.
Background
Pipe machining is a work for making pipe stock according to drawings. The pipe processing mainly processes pipe materials required by industries such as industry, chemical industry, civil use, building, ship manufacturing and the like, and the pipe manufacturing is finished according to a set process. After the pipe material is cut, the fracture is generally not allowed to have flash or burr, and a chamfering machine is usually adopted to chamfer the pipe material notch so as to remove the flash or burr of the pipe material notch.
The existing processing mode is to align the pipe material notch to the operation end of the chamfering machine for chamfering operation through manual work, and the processing mode is low in efficiency and needs to be improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art not enough, provide a structure is transferred in centre gripping location, through clamping device and transfer device cooperation, the pipe material transport work is accomplished to the efficient, and is easy and simple to handle, and conveying efficiency is high, accords with the processing demand.
In order to achieve the above object, the clamping, positioning and transferring structure of the present invention comprises a machine table, wherein a clamping device and a transferring device are arranged on the machine table, and the clamping device and the transferring device are arranged along the Y-axis direction of the machine table;
the clamping device comprises a clamping table, the bottom of the clamping table is fixedly connected with the machine table, a positioning block and a clamping mechanism which are oppositely arranged are arranged at the top of the clamping table, the positioning block is fixed on one side of the clamping table, and the output end of the clamping mechanism faces the positioning block and is fixedly connected with the clamping table;
the transfer device comprises a first transfer device and a second transfer device which are oppositely arranged, the first transfer device is fixedly connected with the machine table, the output end of the first transfer device faces the clamping table, the fixed end of the second transfer device is fixedly connected with one end, back to the clamping table, of the first transfer device, and the output end of the second transfer device slides between the positioning block and the output end of the abutting mechanism.
Preferably, first transfer device includes the location platform, location platform bottom with board fixed connection, the location platform is provided with the constant head tank towards clamping device's one end is sunken, vertically be provided with the slide rail in the constant head tank, first transfer device's output with the slip end of slide rail is connected, the constant head tank both sides transversely are provided with the spacing groove, the spacing inslot is provided with the location stopper, first transfer device's output slides in two between the stopper of location, the location stopper outside is provided with the location mounting, the location mounting with first transfer device's stiff end is connected.
Preferably, the positioning fixing part faces one end of the limiting groove and is provided with a fixing clamping groove, and the fixing clamping groove is clamped between the inner wall of the limiting groove and the side wall of the positioning table.
Preferably, the first transfer device further comprises a first driver and a first transfer clamping block, a fixed end of the first driver is fixedly connected with the positioning fixing piece, a material pushing rod is arranged between an output end of the first driver and the first transfer clamping block, one end of the material pushing rod is connected with the output end of the first driver, and the other end of the material pushing rod is connected with the first transfer clamping block;
the material pushing rod two slides between the two positioning limiting blocks, the bottom of the material pushing rod is connected with the sliding end of the sliding rail, a position withdrawing and stopping block is arranged at one end, close to the first transfer clamping block, of the material pushing rod, and when the first driver drives the material pushing rod to contract, the position withdrawing and stopping block is abutted to the positioning limiting blocks.
Preferably, the second transfer device comprises a second driver and a second transfer clamping block, a fixed end of the second driver is fixedly connected with the clamping table, and an output end of the second driver is fixedly connected with the second transfer clamping block.
Preferably, one end of the first transfer clamping block, which faces the second transfer clamping block, is provided with a positioning hole, and the second transfer clamping block is provided with a positioning pin corresponding to the positioning hole.
Preferably, the second driver with be provided with extension ejector pin and protective housing between the clamp splice is transferred to the second, extension ejector pin slide in the protective housing, the protective housing is close to the one end of second driver with the stiff end fixed connection of second driver, the one end of extension ejector pin with the output fixed connection of second driver, the other end of extension ejector pin with clamp splice fixed connection is transferred to the second.
Preferably, the machine table is provided with a first supporting piece corresponding to the clamping table, and the top of the first supporting piece is fixedly connected with the bottom of the clamping table;
the machine table is provided with a second supporting piece corresponding to the positioning table, and the top of the second supporting piece is fixedly connected with the bottom of the positioning table.
The utility model has the advantages that: the utility model discloses a clamping device and transfer device cooperation, the pipe material transport work is accomplished to the efficient, and is easy and simple to handle, and conveying efficiency is high, accords with the processing demand.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the transfer device of the present invention.
The reference numerals include:
1. a machine platform; 11. a first support; 12. a second support member; 2. a clamping device; 21. a clamping table; 22. positioning blocks; 23. a tightening mechanism; 3. a transfer device; 4. a first transfer device; 41. a positioning table; 411. positioning a groove; 42. a slide rail; 412. a limiting groove; 43. positioning a limiting block; 44. positioning the fixing piece; 441. fixing the clamping groove; 45. a first driver; 46. a first transfer clamp block; 461. positioning holes; 47. a material pushing rod; 48. a back stop block; 5. a second transfer device; 51. a second driver; 52. a second transfer clamp block; 521. positioning pins; 53. the material pushing rod is prolonged; 54. a protective shell.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to fig. 2, the utility model discloses a structure is transferred in centre gripping location, including board 1, be provided with clamping device 2 and transfer device 3 on the board 1, clamping device 2 and transfer device 3 arrange the setting along the Y axle direction of board 1, carry out the centre gripping location through the tubular product that clamping device 2 will need the chamfer, transfer through the tubular product that needs the chamfer from the 2 centre grippings of clamping device.
The clamping device 2 and the transfer device 3 are arranged along the Y-axis direction of the machine table 1, the clamping device 2 is arranged at the front end of the transfer device 3, the clamping device 2 and the transfer device 3 are longitudinally arranged, the longitudinal space of the machine table 1 is fully utilized, the chamfering machine is arranged on the two sides of the machine table 1, which are located on the transfer device 3, the transfer device 3 transfers the pipe to the operation end of the chamfering machine, chamfering operation can be simultaneously carried out on the pipe clamped on the transfer device 3, and the pipe conveying work is efficiently completed.
Specifically, the clamping device 2 includes a clamping table 21, and the tube stock is carried by the clamping table 21. The bottom of the clamping table 21 is fixedly connected with the machine table 1 through the matching of bolt and screw holes or a welding mode, so that the clamping table 21 is fixed with the machine table 1.
The top of the clamping table 21 is provided with a positioning block 22 and a pressing mechanism 23 which are oppositely arranged, the pressing mechanism 23 is an electric cylinder, and the positioning block 22 is fixed on one side of the clamping table 21 in a bolt and screw hole matching mode, so that the positioning block 22 is fixed with the clamping table 21. The output end of the abutting mechanism 23 faces the positioning block 22 and is fixedly connected with the clamping table 21 through a matching mode of bolt screw holes, so that the abutting mechanism 23 and the clamping table 21 are connected.
The transfer device 3 comprises a first transfer device 4 and a second transfer device 5 which are oppositely arranged, and the first transfer device 4 is fixedly connected with the machine table 1 through a matching mode of bolt screw holes, so that the first transfer device 4 is fixed with the machine table 1. The output end of the first transfer device 4 faces the clamping table 21, and the fixed end of the second transfer device 5 is fixedly connected with the end of the clamping table 21, which is far away from the first transfer device 4, through the matching mode of bolt screw holes, so that the second transfer device 5 is fixed with the clamping table 21. The output end of the second transfer device 5 slides between the positioning block 22 and the output end of the abutting mechanism 23, so that the output end of the first transfer device 4 is arranged opposite to the output end of the second transfer device 5, and the first transfer device 4 and the second transfer device 5 are conveniently matched to clamp and transfer the pipe materials.
When the pipe clamping device works, a pipe is transversely placed on the clamping table 21, the output end of the abutting mechanism 23 extends out to transversely push the pipe to the positioning block 22, notches on two sides of the pipe are abutted between the positioning block 22 and the abutting mechanism 23, clamping and positioning of the pipe by the clamping device 2 are realized, the output end of the first transfer device 4 extends towards the clamping table 21 and abuts against the rear end of the pipe, the second transfer device 5 extends out towards the first transfer device 4 and abuts against the front end of the pipe, clamping of the pipe by the transfer device 3 is realized, then the output end of the abutting mechanism 23 retracts, release of the pipe by the clamping device 2 is realized, the output end of the second transfer device 5 extends towards the first transfer device 4, and meanwhile, the output end of the first transfer device 4 retracts, and transfer of the pipe by the transfer device 3 is realized.
The first transfer device 4 of this embodiment includes location platform 41, location platform 41 bottom and board 1 fixed connection, location platform 41 is provided with constant head tank 411 towards the sunken one end of clamping device 2, vertically be provided with slide rail 42 in the constant head tank 411, the output of first transfer device 4 and the slip end of slide rail 42 are connected through bolt screw complex connected mode, the slip end of slide rail 42 is the slider, make the output of first transfer device 4 slide with slide rail 42, can both keep sliding on same horizontal plane when making the output of first transfer device 4 stretch out or contract, improve the job stabilization nature of the output of first transfer device 4.
The locating slot 411 both sides transversely are provided with spacing groove 412, are provided with the location stopper 43 in the spacing groove 412, and the location stopper 43 is provided with the arch towards spacing groove 412 one end, the protruding and the spacing groove 412 sliding connection that pass through of location stopper 43, and the location stopper 43 passes through bolt screw complex connected mode with the locating platform 41 and is connected, makes the location stopper 43 fix on the appointed position of spacing groove 412.
The output end of the first transfer device 4 slides between the two positioning stoppers 43, and the transfer direction of the output end of the first transfer device 4 can be restricted, thereby improving the working accuracy of the first transfer device 4.
The positioning fixing member 44 is disposed outside the positioning limiting block 43, the positioning fixing member 44 is a positioning plate, and the plurality of positioning plates are connected in an n-shape, so that one end of the positioning fixing member 44 facing the limiting groove 412 is open, and one end of the positioning fixing member 44 facing away from the limiting groove 412 is closed. One end of the positioning fixture 44 away from the limiting groove 412 is connected to the fixed end of the first transfer device 4 by a bolt-and-screw fit connection, so that the first transfer device 4 is fixed to the positioning table 41.
In the embodiment, a fixing slot 441 is disposed at an end of the positioning and fixing member 44 facing the limiting slot 412, and the fixing slot 441 is clamped between the inner wall of the limiting slot 412 and the sidewall of the positioning table 41, so that the positioning and fixing member 44 is fixed to the limiting slot 412, and meanwhile, the positioning and fixing member 44 is convenient to slide in the limiting slot 412 to adjust a connection position with the positioning table 41. After the adjustment is completed, the positioning fixing member 44 and the positioning table 41 can be fixed by the connection mode of matching the bolt and the screw hole.
The first transfer device 4 of the present embodiment further includes a first driver 45 and a first transfer clamp 46, and the first driver 45 is an electric push rod. The fixed end of the first driver 45 is fixedly connected with the positioning fixing member 44 by means of bolt and screw hole fitting or welding, so that the first driver 45 is fixed on the positioning fixing member 44.
A material pushing rod 47 is arranged between the output end of the first driver 45 and the first transfer clamping block 46, the material pushing rod 47 is rectangular, one end of the material pushing rod 47 is connected with the output end of the first driver 45 through a matching mode of a bolt screw hole, the other end of the material pushing rod 47 is connected with the first transfer clamping block 46 through a matching mode of a bolt screw hole, so that the output end of the first driver 45, the material pushing rod 47 and the first transfer clamping block 46 are connected and connected, the material pushing rod 47 and the first transfer clamping block 46 can move along with the extension or contraction of the output end of the first driver 45, the first transfer device 4 and the second transfer device 5 can transfer the pipe materials conveniently, and meanwhile, the material pushing rod 47 can increase the stroke of the first driver 45.
The two pushing rods 47 slide between the two positioning stoppers 43, so that the sliding direction of the pushing rods 47 is accurate. The bottom of the material pushing rod 47 is connected with the sliding end of the sliding rail 42, so that the material pushing rod 47 can move and slide more stably along with the extension or contraction of the first driver 45. One end of the material pushing rod 47 close to the first transferring clamping block 46 is provided with a back stop block 48, and the two back stop blocks 48 and the material pushing rod 47 are connected to two sides of the material pushing rod 47 in a clamping groove and clamping block mode, so that the installation is convenient. When the first driver 45 drives the material pushing rod 47 to contract, the position-withdrawing stop block 48 abuts against the positioning stop block 43, and the stroke of the first driver 45 is limited by the position-withdrawing stop block 48, so that the output end of the first driver 45 is positioned when retracting.
The second transfer device 5 of the present embodiment includes a second driver 51 and a second transfer clamping block 52, and a fixed end of the second driver 51 is fixedly connected to the clamping table 21 by means of bolt and screw hole fitting or welding, so that the second driver 51 is fixed to the clamping table 21.
The output end of the second driver 51 is fixedly connected with the second transfer clamping block 52 through the matching of bolt screw holes or a welding mode, so that the output end of the second driver 51 is fixed with the second transfer clamping block 52. The second transfer clamping block 52 is fixed at the output end of the second driver 51 and moves along with the extension or contraction of the output end of the second driver 51, so that the first transfer device 4 and the second transfer device 5 are matched to transfer the pipe materials.
In the embodiment, the first transfer clamping block 46 is provided with a positioning hole 461 towards one end of the second transfer clamping block 52, the second transfer clamping block 52 is provided with a positioning pin 521 corresponding to the positioning hole 461, and when the first transfer clamping block 46 abuts against the second transfer clamping block 52, the positioning pin 521 is inserted into the positioning hole 461, so that the horizontal symmetry condition of the first transfer clamping block 46 and the second transfer clamping block 52 can be observed and verified, the first transfer clamping block 46 and the second transfer clamping block 52 can be kept in a horizontal state when clamping the pipe, the working precision of the transfer device 3 is improved, and the precision of the chamfering operation of the pipe can be improved.
An extension pushing rod 53 and a protective shell 54 are arranged between the second driver 51 and the second transfer clamping block 52, the extension pushing rod 53 slides in the protective shell 54, one end of the protective shell 54 close to the second driver 51 is fixedly connected with the fixed end of the second driver 51 in a welding mode, one end of the extension pushing rod 53 is fixedly connected with the output end of the second driver 51 in a welding mode, the other end of the extension pushing rod 53 is fixedly connected with the second transfer clamping block 52 in a welding mode, the extension pushing rod 53 can increase the stroke of the second driver 51, meanwhile, the protective shell limits the sliding direction of the extension pushing rod 53, the sliding accuracy of the extension pushing rod 53 can be improved, and the accuracy of transferring a pipe material by the second transfer device 5 can be improved.
The board 1 of this embodiment corresponds clamping table 21 and is provided with first support piece 11, and first support piece 11 top is through bolt screw complex connected mode fixed connection with clamping table 21 bottom, and board 1 corresponds location platform 41 and is provided with second support piece 12, and bolt screw complex connected mode fixed connection is passed through with location platform 41 bottom at second support piece 12 top, makes clamping table 21 and location platform 41 all fixed with board 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and it is to be understood that the present invention is not limited to the above embodiments, but may be modified within the scope of the present invention.

Claims (8)

1. A clamping, positioning and transferring structure is characterized in that: the machine comprises a machine table (1), wherein a clamping device (2) and a transfer device (3) are arranged on the machine table (1), and the clamping device (2) and the transfer device (3) are arranged along the Y-axis direction of the machine table (1);
the clamping device (2) comprises a clamping table (21), the bottom of the clamping table (21) is fixedly connected with the machine table (1), a positioning block (22) and a pressing mechanism (23) which are oppositely arranged are arranged at the top of the clamping table (21), the positioning block (22) is fixed on one side of the clamping table (21), and the output end of the pressing mechanism (23) faces the positioning block (22) and is fixedly connected with the clamping table (21);
the transfer device (3) comprises a first transfer device (4) and a second transfer device (5) which are oppositely arranged, the first transfer device (4) is fixedly connected with the machine table (1), the output end of the first transfer device (4) faces towards the clamping table (21), the fixed end of the second transfer device (5) is fixedly connected with the clamping table (21) and deviates from one end of the first transfer device (4), and the output end of the second transfer device (5) slides between the positioning block (22) and the output end of the abutting mechanism (23).
2. The structure of claim 1, wherein: first transfer device (4) are including location platform (41), location platform (41) bottom with board (1) fixed connection, location platform (41) are provided with constant head tank (411) towards the one end of clamping device (2) is sunken, vertically be provided with slide rail (42) in constant head tank (411), the output of first transfer device (4) with the slip end of slide rail (42) is connected, constant head tank (411) both sides transversely are provided with spacing groove (412), be provided with location stopper (43) in spacing groove (412), the output of first transfer device (4) slides in two between location stopper (43), location stopper (43) outside is provided with location mounting (44), location mounting (44) with the stiff end of first transfer device (4) is connected.
3. The structure for clamping, positioning and transferring as claimed in claim 2, wherein: one end, facing the limiting groove (412), of the positioning fixing piece (44) is provided with a fixing clamping groove (441), and the fixing clamping groove (441) is clamped between the inner wall of the limiting groove (412) and the side wall of the positioning table (41).
4. A holding, positioning and transferring structure as set forth in claim 2, wherein: the first transfer device (4) further comprises a first driver (45) and a first transfer clamping block (46), the fixed end of the first driver (45) is fixedly connected with the positioning fixing piece (44), a material pushing rod (47) is arranged between the output end of the first driver (45) and the first transfer clamping block (46), one end of the material pushing rod (47) is connected with the output end of the first driver (45), and the other end of the material pushing rod (47) is connected with the first transfer clamping block (46);
two material pushing rods (47) slide between the two positioning limiting blocks (43), the bottom of each material pushing rod (47) is connected with the sliding end of the corresponding sliding rail (42), one end, close to the first transfer clamping block (46), of each material pushing rod (47) is provided with a back stop block (48), and when the material pushing rods (47) are driven by the first driver (45) to shrink, the back stop blocks (48) are abutted to the positioning limiting blocks (43).
5. The structure of claim 4, wherein: the second transfer device (5) comprises a second driver (51) and a second transfer clamping block (52), the fixed end of the second driver (51) is fixedly connected with the clamping table (21), and the output end of the second driver (51) is fixedly connected with the second transfer clamping block (52).
6. The structure of claim 5, wherein: one end of the first transfer clamping block (46) facing the second transfer clamping block (52) is provided with a positioning hole (461), and the second transfer clamping block (52) is provided with a positioning pin (521) corresponding to the positioning hole (461).
7. The structure of claim 5, wherein: second driver (51) with be provided with extension ejector pin (53) and protective housing (54) between clamp splice (52) is transferred to the second, extension ejector pin (53) slide in protective housing (54), protective housing (54) are close to the one end of second driver (51) with the stiff end fixed connection of second driver (51), the one end of extension ejector pin (53) with the output fixed connection of second driver (51), the other end of extension ejector pin (53) with clamp splice (52) fixed connection is transferred to the second.
8. The structure for clamping, positioning and transferring as claimed in claim 2, wherein: the machine table (1) is provided with a first supporting piece (11) corresponding to the clamping table (21), and the top of the first supporting piece (11) is fixedly connected with the bottom of the clamping table (21);
the machine table (1) is provided with a second supporting piece (12) corresponding to the positioning table (41), and the top of the second supporting piece (12) is fixedly connected with the bottom of the positioning table (41).
CN202222157963.5U 2022-08-15 2022-08-15 Clamping, positioning and transferring structure Active CN218193951U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222157963.5U CN218193951U (en) 2022-08-15 2022-08-15 Clamping, positioning and transferring structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222157963.5U CN218193951U (en) 2022-08-15 2022-08-15 Clamping, positioning and transferring structure

Publications (1)

Publication Number Publication Date
CN218193951U true CN218193951U (en) 2023-01-03

Family

ID=84655894

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222157963.5U Active CN218193951U (en) 2022-08-15 2022-08-15 Clamping, positioning and transferring structure

Country Status (1)

Country Link
CN (1) CN218193951U (en)

Similar Documents

Publication Publication Date Title
CN204639978U (en) Press from both sides lock smith's clamp more
CN113020983A (en) Efficient lock core cover grooving process automatic processing equipment
CN218193951U (en) Clamping, positioning and transferring structure
CN204397408U (en) A kind of connecting rod twin shaft machining center clamp
CN103056691A (en) Multifunctional combination vise for machine
CN210587265U (en) Tandem type tapping machine
CN218639138U (en) Precision machining multistation synchronous clamping jig structure
CN204565642U (en) Mould is from reducing grip device
US20230054478A1 (en) Reclamping device and method for reclamping a workpiece between two clamping devices
CN211332140U (en) Chamfering machine for compressor cylinder block
CN114734386A (en) Impact sample quick-change clamping device
CN211305641U (en) Novel anchor clamps convenient to T shape work piece car processing
CN212192208U (en) Self-positioning precise air-oil pressure clamp jig
CN210360134U (en) Horizontal tool for assembling rod-shaped workpiece and thin-wall sleeve
CN208499739U (en) Carrier automatic transporting mechanism
CN106392144B (en) The processing method of mobile round drill jig and its round
CN219152268U (en) Bolt loading attachment
CN204858240U (en) A press from both sides tight transporting device for intelligent carbon brush groover
CN216029468U (en) A frock clamp for slider processing
CN215199777U (en) Bench worker drill jig
CN220838848U (en) Assembly machine suitable for assembling shoe mold workpiece and clamp
CN217859130U (en) Transfer device for grooving workpieces
CN212266285U (en) Clamping device for preparing diamond
CN219853325U (en) Special-shaped body clamping device
CN219818153U (en) Multi-workpiece milling ruler frame groove equipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant