CN210121979U - Paper folding machine - Google Patents

Paper folding machine Download PDF

Info

Publication number
CN210121979U
CN210121979U CN201920445861.9U CN201920445861U CN210121979U CN 210121979 U CN210121979 U CN 210121979U CN 201920445861 U CN201920445861 U CN 201920445861U CN 210121979 U CN210121979 U CN 210121979U
Authority
CN
China
Prior art keywords
paper
folding
ejection
feeding
cylinder
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
CN201920445861.9U
Other languages
Chinese (zh)
Inventor
李均祥
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.)
Topca Shenzhen Technology Co Ltd
Original Assignee
Topca Shenzhen 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 Topca Shenzhen Technology Co Ltd filed Critical Topca Shenzhen Technology Co Ltd
Priority to CN201920445861.9U priority Critical patent/CN210121979U/en
Application granted granted Critical
Publication of CN210121979U publication Critical patent/CN210121979U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

The utility model relates to a paper folder solves current paper folder function singleness's problem. Including the frame, locate the feed mechanism who is used for the paper supply in the frame for the paper folding mechanism of paper folding for the feeding mechanism on the paper feeding mechanism is sent to the paper folding mechanism to and be used for the discharge mechanism who transports folding paper, paper folding mechanism including first paper folding mechanism, second paper folding mechanism, and third paper folding mechanism, feeding mechanism correspond the feeding mechanism setting, feeding mechanism correspond first constant head tank setting, discharge mechanism correspond stamping die setting. The paper can be folded along the longitudinal direction and the transverse direction of the paper simultaneously, and the third paper folding mechanism can also punch the paper into different shapes.

Description

Paper folding machine
Technical Field
The utility model relates to a mechanical equipment especially relates to a paper folder.
Background
The existing paper folding machine can only fold paper into wave shape during paper folding, or can be folded along one direction of the paper longitudinally or transversely, but can not be folded along the longitudinal direction and the transverse direction of the paper simultaneously.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem of current folder function singleness.
For solving the utility model provides a technical scheme that technical problem adopted does: the utility model discloses a paper folding machine, which comprises a frame, a feeding mechanism arranged on the frame and used for feeding paper, a paper folding mechanism used for folding paper, a feeding mechanism used for feeding the paper on the feeding mechanism to the paper folding mechanism, and a discharging mechanism used for transporting out the folded paper, wherein the paper folding mechanism comprises a first paper folding mechanism, a second paper folding mechanism and a third paper folding mechanism, the first paper folding mechanism comprises a first positioning groove used for positioning the paper and a pair of first folding positioning rollers arranged in parallel in the horizontal direction and arranged at the bottom of the first positioning groove, a first folding gap is arranged between the two first folding positioning rollers, a second positioning groove is arranged below the first folding gap, a first folding blade used for stamping the paper from the first folding gap to the second positioning groove is arranged above the first folding gap, the frame is provided with a first folding blade driving mechanism for driving the first folding blade to move up and down; the second paper folding mechanism comprises a pair of second folding positioning rollers which are arranged on the side edge of the second positioning groove and matched with the second positioning groove for positioning paper, the second folding positioning rollers are arranged in parallel in the vertical direction, a second folding gap is arranged between the two second folding positioning rollers, a third positioning groove is arranged at the discharge end corresponding to the second folding gap, a second folding blade for punching the paper from the second folding gap into the third positioning groove to be folded is arranged corresponding to the second folding gap, and a second folding blade driving mechanism for driving the second folding blade to horizontally move is arranged on the rack; a third positioning groove discharge port is formed in the bottom of the third positioning groove, the third paper folding mechanism comprises a stamping die base arranged on the rack, and a rotary cylinder used for feeding paper in the third positioning groove into the stamping die base for stamping and bending, a stamping die matched with the stamping base is arranged on a piston rod of the rotary cylinder, an air suction port used for adsorbing the paper onto the stamping die is formed in the stamping die, and the rotary cylinder is arranged corresponding to the third positioning groove discharge port; the feeding mechanism is arranged corresponding to the feeding mechanism, the feeding mechanism is arranged corresponding to the first positioning groove, and the discharging mechanism is arranged corresponding to the stamping die.
Right the utility model discloses do further limited technical scheme and include:
the bottom of third constant head tank correspond the discharge gate and be equipped with and keep off the material cylinder, the push rod that keeps off the material cylinder on be equipped with two and be used for supporting the fender material post of paper.
The feeding mechanism comprises a paper storage groove, a paper storage groove discharge port is arranged above the paper storage groove, a sliding block is arranged in the paper storage groove, and the feeding mechanism further comprises a sliding block driving mechanism which drives the sliding block to slide up and down to convey paper to the discharge port.
The paper storage grooves are arranged on the rack in a sliding mode, and a paper storage groove moving driving cylinder for driving the paper storage grooves to move is arranged on the rack.
The feeding mechanism comprises a feeding plate arranged corresponding to the first positioning groove and used for sucking paper on the feeding mechanism to a pneumatic manipulator sucker on the feeding plate, and a material pushing cylinder used for pushing the paper on the feeding plate into the first positioning groove is arranged corresponding to the feeding plate.
The paper feeding device is characterized in that a step used for placing paper is arranged on the feeding plate, the step sequentially rises in the direction away from the first positioning groove, the material pushing cylinder corresponds to the highest step, a pushing rod used for stacking the paper on the step is arranged on a pushing rod of the material pushing cylinder, and a pushing groove matched with the pushing rod is formed in the step.
Pneumatic manipulator sucking disc including two sets of sucking discs, a set of sucking disc corresponds the feeding mechanism setting, a set of sucking disc corresponds the delivery sheet setting, is equipped with two sets of sucking discs of drive in the frame and rotates to and the sucking disc actuating mechanism who reciprocates.
Discharge mechanism including ejection of compact track, locate the ejection of compact eggshell that is used for bearing folding paper on the ejection of compact track for push the ejection of compact push rod in the ejection of compact eggshell to folding paper, and the ejection of compact push rod actuating mechanism that drive ejection of compact push rod reciprocated, ejection of compact eggshell form through connecting the peg by the casing of two halves eggshell forms, connect the peg articulate on ejection of compact track, ejection of compact track correspond stamping die base below and set up, ejection of compact track on be equipped with and be used for pushing away the pushing equipment of stamping die base below and push away the ejection of compact to ejection of compact eggshell on the ejection of compact track.
The pushing mechanism comprises a pushing cylinder, a U-shaped feeding push rod is arranged on a push rod of the pushing cylinder, and a pushing cylinder driving mechanism for driving the pushing cylinder to move and push materials is arranged on the rack.
The material pushing cylinder is connected with the material pushing cylinder driving mechanism through a material pushing cylinder mounting plate, a material discharging cylinder is fixedly arranged on the material pushing cylinder mounting plate, a U-shaped material discharging push rod used for pushing away an eggshell filled with paper is arranged on a push rod of the material discharging cylinder, and the material discharging cylinder corresponds to the lower portion of the eggshell below the stamping die base.
Through the technical scheme, the beneficial effects of the utility model are that: the utility model discloses a paper folder including first paper folding mechanism, second paper folding mechanism to and third paper folding mechanism, can follow vertical and horizontal folding simultaneously of paper, third paper folding mechanism can also become the opposite sex to paper punching press.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of a paper folding machine of the present invention.
Fig. 2 is a schematic structural diagram of a feeding mechanism and a feeding mechanism of the paper folding machine of the present invention.
Fig. 3 is a schematic structural diagram of a paper folding mechanism and a discharging mechanism of the paper folding machine of the present invention.
Fig. 4 is a schematic view of the sectioning structure of the paper folding mechanism and the discharging mechanism of the paper folding machine of the present invention.
Fig. 5 is a schematic structural diagram of a discharging mechanism of the paper folding machine of the present invention.
Detailed Description
The structure of the present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 to 5, a paper folding machine includes a frame 1, a feeding mechanism 2 for feeding paper, a paper folding mechanism 3 for folding paper, a feeding mechanism 4 for feeding paper from the feeding mechanism to the paper folding mechanism, and a discharging mechanism 5 for discharging folded paper, the paper folding mechanism 3 includes a first paper folding mechanism 31, a second paper folding mechanism 32, and a third paper folding mechanism 33, the first paper folding mechanism 31 includes a first positioning slot 311 for positioning paper, and a pair of first folding positioning rollers 312 disposed at the bottom of the first positioning slot and parallel to the horizontal direction for supporting paper, a first folding gap 313 is disposed between the two first folding positioning rollers, a second positioning slot 314 is disposed below the first folding gap, a first folding blade 315 is disposed above the first folding gap for punching and folding paper from the first folding gap to the second positioning slot, the frame is provided with a first folding blade driving mechanism for driving the first folding blade to move up and down; in this embodiment, the first folding blade driving mechanism is an air cylinder driving mechanism. The second paper folding mechanism 32 comprises a pair of second folding positioning rollers 321 which are arranged on the side edges of the second positioning grooves and matched with the second positioning grooves for positioning paper, the second folding positioning rollers are arranged in parallel in the vertical direction, a second folding gap 322 is arranged between the two second folding positioning rollers, a third positioning groove 323 is arranged at the discharge end corresponding to the second folding gap, a second folding blade 324 for punching the paper from the second folding gap into the third positioning groove for folding is arranged corresponding to the second folding gap, and a second folding blade driving mechanism for driving the second folding blade to horizontally move is arranged on the rack; in this embodiment, the second folding blade driving mechanism is an air cylinder driving mechanism. A third positioning groove discharge hole 3231 is formed in the bottom of the third positioning groove, the third paper folding mechanism 33 comprises a stamping die base 331 arranged on the rack, and a rotary cylinder 332 used for feeding paper in the third positioning groove into the stamping die base for stamping and bending, a stamping die 333 matched with the stamping base is arranged on a piston rod of the rotary cylinder, an air suction opening 334 used for adsorbing the paper onto the stamping die is formed in the stamping die, and the rotary cylinder is arranged corresponding to the third positioning groove discharge hole; in this embodiment, the bottom of the third positioning groove 323 corresponds to the discharge hole and is provided with a material blocking cylinder 3232, and a push rod of the material blocking cylinder is provided with two material blocking columns 3233 for supporting paper. When paper enters the third positioning groove, the paper is blocked by the blocking column, and when the paper is sucked by the stamping die, the blocking cylinder drives the blocking column to retract. Preventing damage to the paper. The feeding mechanism corresponds to the feeding mechanism, the feeding mechanism corresponds to the first positioning groove, and the discharging mechanism corresponds to the stamping die. After the paper is positioned in the first positioning groove, the first folding blade driving mechanism drives the first folding blade to move downwards, and the paper is punched from the first folding gap into the second positioning groove and is folded into two layers. I.e. the paper is folded into two layers in the transverse direction of the paper. The second folding blade driving mechanism drives the second folding blade to horizontally move, and the paper folded into two layers is punched from the second folding gap into the third positioning groove and then is folded into four layers, namely the paper is folded into four layers along the transverse direction of the paper. Then revolving cylinder's piston rod stretches out, and stamping die stretches into third constant head tank discharge gate, and the inlet scoop induced drafts on adsorbing stamping die to the paper in the third constant head tank, then revolving cylinder's piston rod shrink, then revolving cylinder is rotatory, makes stamping die correspond the stamping die base, then revolving cylinder's piston rod stretches out, drives stamping die and punches paper to stamping die base in. I.e. the paper is folded in the longitudinal direction of the paper. In this embodiment, the stamping die is arc-shaped, and folds the paper into an arc shape along the longitudinal direction of the paper. When the stamping die is specifically implemented, the stamping die can be V-shaped, U-shaped or other special shapes, and different stamping dies and stamping die bases can be manufactured according to the requirements. So that the paper can be folded simultaneously along the longitudinal direction and the transverse direction of the paper, and the third paper folding mechanism can also punch the paper into different shapes.
In this embodiment, the feeding mechanism 2 includes a paper storage slot 21, a paper storage slot discharge port 211 is disposed above the paper storage slot, a slider 212 is disposed in the paper storage slot, and the feeding mechanism further includes a slider driving mechanism for driving the slider to slide up and down to feed paper to the discharge port. In this embodiment, the slider driving mechanism is a cylinder driving mechanism. In this embodiment, more than two paper storage grooves are slidably disposed on the frame, and the frame is provided with a paper storage groove movement driving cylinder for driving the paper storage grooves to move. When paper in one paper storage groove is used up, the cylinder drives the other paper storage groove to move for feeding, the two paper storage grooves can exchange feeding back and forth, one paper storage groove feeds and the other paper storage groove feeds, and therefore time waste caused by feeding is avoided. In this embodiment, a paper positioning post 213 capable of being drawn out in a sliding manner is disposed on a side surface of the paper storage slot, so that when the paper positioning post is drawn out, the paper can be loaded into the paper storage slot. In this embodiment, be equipped with the first inductor that is used for responding to whether discharge gate department has paper on storing up the paper groove. When the first sensor senses that no paper exists at the discharge port, the sliding block driving mechanism drives the sliding block to move upwards to send the paper to the discharge port. Thereby realizing automatic feeding.
In this embodiment, the feeding mechanism 4 includes a feeding plate 41 corresponding to the first positioning groove, a pneumatic manipulator suction cup 42 for sucking up the paper on the feeding mechanism and feeding the paper onto the feeding plate, and a pushing cylinder 43 for pushing the paper on the feeding plate into the first positioning groove is disposed corresponding to the feeding plate. In this embodiment, the feeding plate 41 is provided with a step 411 for placing paper, the step is sequentially raised in a direction away from the first positioning groove, the pushing cylinder is arranged corresponding to the highest step, the pushing rod of the pushing cylinder is provided with a pushing rod 431 for stacking the paper on the step, and the step is provided with a pushing groove 412 matched with the pushing rod. The material pushing cylinder drives the material pushing rod to move in the pushing groove, so that paper on the step steps is stacked together and pushed into the first positioning groove.
In this embodiment, pneumatic manipulator sucking disc 42 is including two sets of sucking discs 421, and a set of sucking disc corresponds the feeding mechanism setting, and a set of sucking disc corresponds the delivery sheet setting, is equipped with two sets of sucking discs of drive in the frame and rotates to and the sucking disc actuating mechanism 422 that reciprocates. The sucker driving mechanism comprises a sucker driving cylinder 4221 which respectively drives the two groups of suckers to move up and down, the sucker driving cylinder is fixed on the turntable, and the sucker driving mechanism further comprises a pneumatic driving mechanism 4222 which drives the turntable to rotate.
Discharging mechanism 5 is including ejection of compact track 51, locate more than one ejection of compact eggshell 52 that is used for bearing folding paper on the ejection of compact track, a discharging push rod 53 for pushing folding paper into in the ejection of compact eggshell, and the ejection of compact push rod actuating mechanism 54 that the drive discharging push rod reciprocated, the ejection of compact eggshell is formed by connecting the peg by the casing of two halves eggshell forms, connect the peg articulate on ejection of compact track, the ejection of compact track corresponds stamping die base below and sets up, be equipped with on the ejection of compact track and be used for pushing away the ejection of compact 55 of ejection of compact below the stamping die base and push away the ejection of compact. In this embodiment, the material pushing mechanism 55 includes a material pushing cylinder 551, a U-shaped material feeding push rod 552 is disposed on a push rod of the material pushing cylinder, and a material pushing cylinder driving mechanism 553 for driving the material pushing cylinder to move and push the material is disposed on the frame. The material pushing cylinder driving mechanism is a cylinder driving mechanism. In this embodiment, the material pushing cylinder is connected with the material pushing cylinder driving mechanism through the material pushing cylinder mounting plate 554, a push rod of the material pushing cylinder driving mechanism is fixedly connected with the material pushing cylinder mounting plate, the material pushing cylinder mounting plate is fixedly provided with the discharging cylinder 555, the push rod of the discharging cylinder is provided with the U-shaped discharging push rod 556 used for pushing away the eggshell filled with paper, and the discharging cylinder is arranged below the eggshell corresponding to the lower side of the stamping die base. When the pushing cylinder driving mechanism drives the pushing cylinder mounting plate to move, the pushing cylinder and the discharging cylinder move simultaneously, and when the discharging cylinder pushes away the eggshells filled with paper, the pushing cylinder pushes the eggshells which are not filled with paper to the lower side of the stamping die base. Thereby improving the efficiency of the egg shell transfer.
While the present invention has been described in detail and with reference to the accompanying drawings, it is not to be understood as limited by the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive work within the scope of the present invention as described in the claims.

Claims (10)

1. The utility model provides a paper folder, includes the frame, locates the feed mechanism who is used for the paper supply in the frame for the paper folding mechanism of paper folding for the feeding mechanism on the paper folding mechanism is sent to the paper on the feed mechanism, and is used for the discharge mechanism who transports the paper after folding, its characterized in that: the paper folding mechanism comprises a first paper folding mechanism, a second paper folding mechanism and a third paper folding mechanism, wherein the first paper folding mechanism comprises a first positioning groove for positioning paper and a pair of first folding positioning rollers which are arranged at the bottom of the first positioning groove and are used for supporting the paper and arranged in parallel in the horizontal direction; the second paper folding mechanism comprises a pair of second folding positioning rollers which are arranged on the side edge of the second positioning groove and matched with the second positioning groove for positioning paper, the second folding positioning rollers are arranged in parallel in the vertical direction, a second folding gap is arranged between the two second folding positioning rollers, a third positioning groove is arranged at the discharge end corresponding to the second folding gap, a second folding blade for punching the paper from the second folding gap into the third positioning groove to be folded is arranged corresponding to the second folding gap, and a second folding blade driving mechanism for driving the second folding blade to horizontally move is arranged on the rack; a third positioning groove discharge port is formed in the bottom of the third positioning groove, the third paper folding mechanism comprises a stamping die base arranged on the rack, and a rotary cylinder used for feeding paper in the third positioning groove into the stamping die base for stamping and bending, a stamping die matched with the stamping base is arranged on a piston rod of the rotary cylinder, an air suction port used for adsorbing the paper onto the stamping die is formed in the stamping die, and the rotary cylinder is arranged corresponding to the third positioning groove discharge port; the feeding mechanism is arranged corresponding to the feeding mechanism, the feeding mechanism is arranged corresponding to the first positioning groove, and the discharging mechanism is arranged corresponding to the stamping die.
2. A paper folder as claimed in claim 1 wherein: the bottom of third constant head tank correspond the discharge gate and be equipped with and keep off the material cylinder, the push rod that keeps off the material cylinder on be equipped with two and be used for supporting the fender material post of paper.
3. A paper folder as claimed in claim 1 wherein: the feeding mechanism comprises a paper storage groove, a paper storage groove discharge port is arranged above the paper storage groove, a sliding block is arranged in the paper storage groove, and the feeding mechanism further comprises a sliding block driving mechanism which drives the sliding block to slide up and down to convey paper to the discharge port.
4. A paper folder as claimed in claim 3 wherein: more than two paper storage grooves are arranged on the rack in a sliding mode, and a paper storage groove moving driving cylinder for driving the paper storage grooves to move is arranged on the rack.
5. A paper folder as claimed in claim 1 wherein: the feeding mechanism comprises a feeding plate arranged corresponding to the first positioning groove and used for sucking paper on the feeding mechanism to a pneumatic manipulator sucker on the feeding plate, and a material pushing cylinder used for pushing the paper on the feeding plate into the first positioning groove is arranged corresponding to the feeding plate.
6. A paper folder as claimed in claim 5 wherein: the paper feeding device is characterized in that a step used for placing paper is arranged on the feeding plate, the step sequentially rises in the direction away from the first positioning groove, the material pushing cylinder corresponds to the highest step, a pushing rod used for stacking the paper on the step is arranged on a pushing rod of the material pushing cylinder, and a pushing groove matched with the pushing rod is formed in the step.
7. A paper folder as claimed in claim 5 wherein: pneumatic manipulator sucking disc including two sets of sucking discs, a set of sucking disc corresponds the feeding mechanism setting, a set of sucking disc corresponds the delivery sheet setting, is equipped with two sets of sucking discs of drive in the frame and rotates to and the sucking disc actuating mechanism who reciprocates.
8. A paper folder as claimed in claim 1 wherein: discharge mechanism including ejection of compact track, locate the ejection of compact eggshell that is used for bearing folding paper on the ejection of compact track for push the ejection of compact push rod in the ejection of compact eggshell to folding paper, and the ejection of compact push rod actuating mechanism that drive ejection of compact push rod reciprocated, ejection of compact eggshell form through connecting the peg by the casing of two halves eggshell forms, connect the peg articulate on ejection of compact track, ejection of compact track correspond stamping die base below and set up, ejection of compact track on be equipped with and be used for pushing away the pushing equipment of stamping die base below and push away the ejection of compact to ejection of compact eggshell on the ejection of compact track.
9. A paper folder as claimed in claim 8 wherein: the pushing mechanism comprises a pushing cylinder, a U-shaped feeding push rod is arranged on a push rod of the pushing cylinder, and a pushing cylinder driving mechanism for driving the pushing cylinder to move and push materials is arranged on the rack.
10. A paper folder as claimed in claim 9 wherein: the material pushing cylinder is connected with the material pushing cylinder driving mechanism through a material pushing cylinder mounting plate, a material discharging cylinder is fixedly arranged on the material pushing cylinder mounting plate, a U-shaped material discharging push rod used for pushing away an eggshell filled with paper is arranged on a push rod of the material discharging cylinder, and the material discharging cylinder corresponds to the lower portion of the eggshell below the stamping die base.
CN201920445861.9U 2019-04-03 2019-04-03 Paper folding machine Active CN210121979U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920445861.9U CN210121979U (en) 2019-04-03 2019-04-03 Paper folding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920445861.9U CN210121979U (en) 2019-04-03 2019-04-03 Paper folding machine

Publications (1)

Publication Number Publication Date
CN210121979U true CN210121979U (en) 2020-03-03

Family

ID=69633184

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920445861.9U Active CN210121979U (en) 2019-04-03 2019-04-03 Paper folding machine

Country Status (1)

Country Link
CN (1) CN210121979U (en)

Similar Documents

Publication Publication Date Title
CN118108047A (en) Card formula collating machine
CN107214237A (en) Heat exchanger plate automatic stamping production equipment and its production technology
CN113400414B (en) CCD positioning full-automatic sheet machine
CN201161271Y (en) Punching and feeding device for tinplate
CN112658071B (en) Processing mechanism of sheet metal piece
CN210121979U (en) Paper folding machine
CN211338058U (en) Digital UV gold stamping device
CN219006984U (en) Discharging mechanism and plastic suction flanging machine
CN110592821B (en) Automatic label feeder
CN219114767U (en) Clamping and overturning mechanism for cutting work of plastic sucking product
CN218892340U (en) Dual-color single Zhang Quan automatic screen printer and special single Zhang Songliao mechanism thereof
CN219172911U (en) Staple label folding machine
CN109530541B (en) Production line for combined processing of special-shaped door plate of kitchen cabinet
CN113477836B (en) Post-processing equipment for semiconductor electronic device production
CN216065080U (en) Stamping device
CN215824020U (en) Automatic cutting device for dumbbell weight counterbalance pieces
CN109676059B (en) Piano apron long hinge edge rolling forming device
KR20200029891A (en) garbage bag folding apparatus and method for folding garbage bag by the apparatus
CN209792456U (en) Automatic feeder for sheet stock of punch press
CN212667811U (en) Inner support lower box conveying device
CN211191632U (en) Continuous stamping cutting machine
CN202121010U (en) Automatic pole piece wrapping machine for storage battery
CN214140725U (en) Thermoprinting device for card anti-fake label
CN211990632U (en) Feeding device of automatic plate blank punching production line
CN214290367U (en) Automatic robot feeding and discharging stamping production line with double sliding rails

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant