CN111502306A - Ceiling board draws device for circular arc line - Google Patents

Ceiling board draws device for circular arc line Download PDF

Info

Publication number
CN111502306A
CN111502306A CN202010333020.6A CN202010333020A CN111502306A CN 111502306 A CN111502306 A CN 111502306A CN 202010333020 A CN202010333020 A CN 202010333020A CN 111502306 A CN111502306 A CN 111502306A
Authority
CN
China
Prior art keywords
plate
sliding
deflector
gear
circular arc
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.)
Withdrawn
Application number
CN202010333020.6A
Other languages
Chinese (zh)
Inventor
张谣
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN202010333020.6A priority Critical patent/CN111502306A/en
Publication of CN111502306A publication Critical patent/CN111502306A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14Conveying or assembling building elements
    • E04G21/16Tools or apparatus
    • E04G21/18Adjusting tools; Templates
    • E04G21/1841Means for positioning building parts or elements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

The invention relates to a device for scribing a circular arc-shaped line, in particular to a device for scribing a circular arc-shaped line on a ceiling board. The invention provides a device for scribing a circular arc line on a ceiling board, which can intermittently rotate the ceiling board, can scribe a circular arc line on the ceiling board and can drive a cutter to cut along the circular arc line scribed at the bottom of the ceiling board. The utility model provides a ceiling board draws device for circular arc line, includes work table, fixed plate, first deflector, sliding sleeve, second deflector, second slider, set screw etc. and fixed mounting has the right angle shape fixed plate on the work table, and fixed plate both sides handing-over department is provided with first deflector, is equipped with the spout in the first deflector. According to the invention, the ceiling board can be drawn into a circular arc line only by placing a worker in the fixed plate, then stepping on the pedal, sliding the first sliding block and then shifting the rotating plate.

Description

Ceiling board draws device for circular arc line
Technical Field
The invention relates to a device for scribing a circular arc-shaped line, in particular to a device for scribing a circular arc-shaped line on a ceiling board.
Background
The suspended ceiling is a decoration for decorating the top of the residential environment of a house. The suspended ceiling has the functions of heat preservation, heat insulation, sound insulation and sound absorption, and is also a hidden layer for projects such as electric, ventilation and air conditioning, communication and fire prevention, alarm pipeline equipment and the like.
At present, when most workers install the ceiling tiles, the workers inevitably meet corners, and the workers directly install a ceiling tile at the corners not only can affect the light to the ground, but also can affect the attractiveness of a house, so that when the workers install the ceiling tile to meet the corners, the workers generally mark a specified shape on the ceiling tile and can not affect the light to the ground and the attractiveness of the house, the traditional workers need to mark an arc-shaped line on the ceiling tile by using a tape measure and a pencil, after the workers mark the arc-shaped line on the ceiling tile by using the tape measure and the pencil, the right hand of the workers needs to hold a cutter, the right hand of the workers needs to control the cutter to swing left and right along the arc-shaped line marked on the ceiling tile, and then the cutter swings left and right to mark an arc along one side of the ceiling tile, however, the redundant edge of the ceiling tile is cut off, and then the left hand of the workers need to turn, after the ceiling board is turned over by a worker, the right hand of the worker can swing left and right again along the arc-shaped line marked on the ceiling board to thoroughly cut off the redundant ceiling board, and the worker finishes the work of marking the arc-shaped line and cutting the ceiling board.
Therefore, it is necessary to develop a device for scribing a circular arc line of a ceiling board, which can intermittently rotate the ceiling board, scribe a circular arc line on the ceiling board, and simultaneously drive a cutter to cut along the circular arc line scribed at the bottom of the ceiling board.
Disclosure of Invention
In order to overcome the defects that the process that a worker uses a tape measure and a pencil to mark a circular arc line on the ceiling board is complicated, the left hand of the worker needs to intermittently rotate the ceiling board and consumes a long time of the worker, and the right hand of the worker holds a cutter to swing left and right along the circular arc line marked on the ceiling board and consumes great strength, the technical problem is that: the device for scribing the circular arc-shaped line of the ceiling board can intermittently rotate the ceiling board, can scribe the circular arc-shaped line on the ceiling board and can also drive a cutter to cut along the circular arc-shaped line scribed at the bottom of the ceiling board.
The technical scheme is as follows: the utility model provides a ceiling board draws device for circular arc line, including the table, the fixed plate, first deflector, the sliding sleeve, the second deflector, second slider and set screw, fixed mounting has the right angle shape fixed plate on the table, fixed plate both sides handing-over department is provided with first deflector, be equipped with the spout in the first deflector, sliding sleeve is equipped with the sliding sleeve on the first deflector, first deflector tip is equipped with right angle shape second deflector, second deflector top is equipped with the spout, sliding connection has the second slider in the spout of second deflector, set screw is equipped with in the spout of first deflector, still including the slide rail, first slider and axis of rotation, slide rail one end is connected with the slide rail perpendicularly, sliding connection has first slider in the slide rail, first slider one end is rotated and is connected with the axis of rotation.
The pencil sharpener further comprises a rotating plate, a fixed shaft, a connecting plate, an adjusting screw and a first gear, wherein the rotating plate is fixedly arranged on the rotating shaft, a sliding groove is formed in the rotating plate, the fixed shaft is arranged in the middle of the rotating plate, the connecting plate is arranged in the sliding groove of the rotating plate, a rack is arranged at one end of the connecting plate, a circular through hole for placing a pencil is formed in the other end of the connecting plate, the adjusting screw for adjusting the height of the pencil is arranged on the outer side of the circular through hole, the first gear is sleeved on the fixed shaft, and.
The first gear is fixedly provided with a cutter bar, the other end of the cutter bar is provided with a sliding groove, the cutter bar is arranged in the sliding groove, and the cutter is connected with the adjusting block.
And furthermore, the sliding rail device also comprises a sliding nut and a lead screw, wherein two sliding nuts are arranged on the side wall of the sliding rail in a sliding manner, the sliding nuts are fixedly connected with a stop block in the sliding rail, and the lead screw is connected in the sliding nuts in a threaded manner.
Further, the table comprises a fixing box, a pedal plate, a first bevel gear, a rotating rod, a second gear, a first rack, a fixing block, a spring, a connecting rod, a second rack, a third gear and a second bevel gear, wherein the fixing box is fixedly arranged at the table foot position on one side of the working table, the pedal box is arranged in the fixing box, the pedal plate is arranged in the pedal box, the first bevel gear is arranged in the fixing box, the rotating rod is fixedly arranged in the first bevel gear, the second gear is fixedly arranged at the top end of the rotating rod, the first rack is arranged on two outer walls of the right-angle fixing plate, the second gear is meshed with the first rack, the fixing blocks are connected in sliding ways on two sides of the right-angle fixing plate, the fixing blocks are fixedly connected with the outer wall of the first rack, the spring is arranged in the pedal box, two ends of the spring are respectively connected, the top end of the connecting rod is fixedly provided with a second rack, a third gear is rotatably arranged in the pedal box and meshed with the second rack, a second bevel gear is fixedly arranged on the third gear and meshed with the first bevel gear.
The beneficial effects are that: according to the invention, the ceiling board can be drawn into a circular arc line only by placing the ceiling board in the fixed plate by a worker, stepping on the pedal, sliding the first sliding block and shifting the rotating plate.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a first partial structural diagram of the present invention.
Fig. 3 is a second partial structural diagram of the present invention.
Fig. 4 is a third partial structural diagram of the present invention.
Fig. 5 is a schematic view of a fourth partial structure of the present invention.
Fig. 6 is a schematic diagram of a fifth partial structure according to the present invention.
Fig. 7 is a schematic diagram of a sixth partial structure of the present invention.
Part names and serial numbers in the figure: 1, 2, a fixing plate, 3, a first guide plate, 4 sliding sleeves, 5 sliding rails, 6, a first sliding block, 7, a rotating shaft, 8, a rotating plate, 9, a fixing shaft, 10, a connecting plate, 11, 12, a second guide plate, 13, a second sliding block, 14, a fixing screw, 15, a first gear, 16, a cutter bar, 17, a regulating block, 18, a sliding nut, 20 a screw rod, 21, a fixing box, 22, a pedal box, 23, 24, a first bevel gear, 25, a rotating rod, 26, a second gear, 27, a first rack, 28, a fixing block, 29, a connecting rod, 30, 31, a second rack, 32, a third gear and 33, and a second bevel gear.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Example 1
A ceiling board circular arc line drawing device is shown in figures 1-4 and comprises a working table 1, a fixing plate 2, a first guide plate 3, a sliding sleeve 4, a second guide plate 12, a second sliding block 13 and a fixing screw 14, wherein the working table 1 is fixedly provided with the right-angle fixing plate 2, the joint of two sides of the fixing plate 2 is provided with the first guide plate 3, the first guide plate 3 is internally provided with a sliding chute, the sliding sleeve 4 is sleeved on the first guide plate 3 in a sliding manner, the end part of the first guide plate 3 is provided with the right-angle second guide plate 12, the sliding chute is arranged above the second guide plate 12, the sliding chute of the second guide plate 12 is connected with the second sliding block 13 in a sliding manner, the fixing screw 14 is arranged in the sliding chute of the first guide plate 3, the fixing screw 14 is in threaded connection with the second guide plate 12, the ceiling board further comprises a sliding rail 5, the first sliding block 6 and a rotating shaft 7, one end of the sliding sleeve 4 is vertically, one end of the first sliding block 6 is rotatably connected with a rotating shaft 7.
As shown in fig. 2, the pencil sharpener further comprises a rotating plate 8, a fixed shaft 9, a connecting plate 10, an adjusting screw 11 and a first gear 15, wherein the rotating plate 8 is fixedly arranged on the rotating shaft 7, a sliding groove is formed in the rotating plate 8, the fixed shaft 9 is arranged in the middle of the rotating plate 8, the connecting plate 10 is arranged in the sliding groove of the rotating plate 8, a rack is arranged at one end of the connecting plate 10, a circular through hole for placing a pencil is formed in the other end of the connecting plate 10, the adjusting screw 11 for adjusting the height of the pencil is arranged on the outer side of the circular through hole, the first gear 15 is sleeved on the fixed shaft.
As shown in fig. 3-4, the cutting device further comprises a cutter bar 16, a cutter 17 and an adjusting block 18, the cutter bar 16 is fixedly mounted on the first gear 15, a sliding groove is formed at the other end of the cutter bar 16, the cutter 17 is mounted in the sliding groove of the cutter bar 16, the adjusting block 18 is connected to the cutter 17, and the adjusting block 18 can enable the cutter 17 to slide up and down in the sliding groove of the cutter bar 16.
When the workman need draw the circular arc line to the furred ceiling board, only need place the furred ceiling board in fixed plate 2, then slide the position of confirming second deflector 12 in sliding sleeve 4 through first deflector 3, when second deflector 12 reachs suitable position, screw up set screw 14, readjust slide rail 5's position to this confirms the centre of a circle of circular arc line, then the workman only need use the pencil to draw, alright in order to accomplish the circular arc line of drawing to the furred ceiling board.
When the workman need use the pencil to draw when convex line, only need place the pencil in the circular through-hole of rotor plate 8, then use adjusting screw 11 fixed the pencil, stir rotor plate 8 again, alright with the drawing of accomplishing convex line to the function of replacing artifical drawing convex line has been realized.
When the workman need cut the furred ceiling board of drawing the completion, only need rotate cutter arbor 16 to the spout of rotor plate 8 in through first gear 15, then transfer cutter 17 to suitable position through regulating block 18, because the cooperation of rack on first gear 15 and the connecting plate 10, can make connecting plate 10 remove to the opposite side, rotor plate 8 is stirred this moment, cutter 17 on the cutter arbor 16 alright cut the furred ceiling board along the circular arc line of drawing well to realized replacing the manual work to the function that the furred ceiling board of drawing the completion carries out the cutting.
Example 2
On the basis of the embodiment 1, as shown in fig. 5, the slide rail device further comprises two slide nuts 19 and a lead screw 20, wherein the two slide nuts 19 are slidably mounted on the side wall of the slide rail 5, the slide nuts 19 are fixedly connected with a stopper in the slide rail 5, the lead screw 20 is connected in the slide nuts 19 in a threaded manner, and the lead screw 20 is rotatably connected with the slide rail 5.
When the workman has drawn a circular pitch arc and need draw next circular pitch arc, only need earlier the dog in the slide rail 5 passes through lead screw 20 and slip nut 19 to be fixed in handing-over department with second deflector 12, when the workman has drawn a circular arc line, only need with first slider 6 propelling movement to another dog department, alright realize need not the manual work and look for the function in circular arc line centre of a circle once more.
As shown in fig. 6-7, the table further comprises a fixed box 21, a pedal box 22, a pedal plate 23, a first bevel gear 24, a rotating rod 25, a second gear 26, a first rack 27, a fixed block 28, a spring 29, a connecting rod 30, a second rack 31, a third gear 32 and a second bevel gear 33, wherein the fixed box 21 is fixedly arranged at the table foot position on one side of the table 1, the pedal box 22 is arranged in the fixed box 21, the pedal plate 23 is arranged in the pedal box 22, the fixed box 21 is rotatably connected with the first bevel gear 24, the rotating rod 25 is fixedly arranged in the first bevel gear 24, the second gear 26 is fixedly arranged at the top end of the rotating rod 25, the first rack 27 is arranged on both outer walls of the right-angle-shaped fixed plate 2, the second gear 26 is meshed with the first rack 27, the fixed block 28 is slidably connected in the sliding grooves on both sides of the right-angle-shaped fixed plate 2, the fixed block 28 is fixedly connected with, two ends of the spring 29 are respectively connected with the foot board 23 and the bottom of the foot board box 22, a connecting rod 30 is fixedly arranged at one end of the foot board 23 close to the work table 1, a second rack 31 is fixedly arranged at the top end of the connecting rod 30, a third gear 32 is rotatably arranged in the foot board box 22, the third gear 32 is meshed with the second rack 31, a second bevel gear 33 is fixedly arranged on the third gear 32, and the second bevel gear 33 is meshed with the first bevel gear 24.
When a worker needs to fix the ceiling board placed in the fixing plate 2, the worker only needs to step on the pedal plate 23 downwards, the pedal plate 23 can drive the connecting rod 30 fixedly connected with the pedal plate 23 to move downwards, the connecting rod 30 can drive the second rack 31 fixedly connected with the connecting rod 30 to move downwards, the second rack 31 can drive the third gear 32 meshed with the third rack to rotate, the third gear 32 can drive the second bevel gear 33 meshed with the third rack to rotate, the second bevel gear 33 can drive the first bevel gear 24 meshed with the second bevel gear to rotate, the first bevel gear 24 can drive the rotating rod 25 to rotate, the rotating rod 25 can drive the second gear 26 on the top of the rotating rod to rotate, and the second gear 26 can pull the fixing block 28 through the first rack 27, so that the function of fixing the ceiling board in the fixing plate 2 is realized.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (5)

1. The utility model provides a ceiling board draws device for circular arc line, including the table, the fixed plate, first deflector, the sliding sleeve, the second deflector, second slider and set screw, fixed mounting has the right angle shape fixed plate on the table, fixed plate both sides handing-over department is provided with first deflector, be equipped with the spout in the first deflector, sliding sleeve is equipped with the sliding sleeve on the first deflector, first deflector tip is equipped with right angle shape second deflector, second deflector top is equipped with the spout, sliding connection has the second slider in the spout of second deflector, set screw is equipped with in the spout of first deflector, a serial communication port, still including the slide rail, first slider and axis of rotation, slide sleeve one end is connected with the slide rail perpendicularly, sliding connection has first slider in the slide rail, first slider one end is rotated and is connected with the axis of rotation.
2. The ceiling board circular arc line drawing device according to claim 1, further comprising a rotating plate, a fixed shaft, a connecting plate, an adjusting screw and a first gear, wherein the rotating plate is fixedly mounted on the rotating shaft, a sliding groove is formed in the rotating plate, the fixed shaft is mounted in the middle of the rotating plate, the connecting plate is mounted in the sliding groove of the rotating plate, a rack is arranged at one end of the connecting plate, a circular through hole for placing a pencil is formed in the other end of the connecting plate, the adjusting screw for adjusting the height of the pencil is mounted on the outer side of the circular through hole, the first gear is sleeved on the fixed shaft and meshed with the rack on the connecting plate.
3. The device for scribing a circular arc-shaped line on the ceiling plate according to claim 2, further comprising a cutter bar, a cutter and an adjusting block, wherein the cutter bar is fixedly arranged on the first gear, a sliding groove is formed in the other end of the cutter bar, the cutter is arranged in the cutter bar sliding groove, and the adjusting block is connected to the cutter.
4. The device for scribing a circular arc-shaped wire on the ceiling board as claimed in claim 3, further comprising two sliding nuts and a lead screw, wherein the two sliding nuts are slidably mounted on the side wall of the sliding rail, the sliding nuts are fixedly connected with the stop block in the sliding rail, and the lead screw is connected with the sliding nuts through threads.
5. The device for scribing a circular arc-shaped line on a ceiling board according to claim 4, further comprising a fixing box, a pedal plate, a first bevel gear, a rotating rod, a second gear, a first rack, a fixing block, a spring, a connecting rod, a second rack, a third gear and a second bevel gear, wherein the fixing box is fixedly arranged at a table foot at one side of the working table, the pedal box is arranged in the fixing box, the pedal plate is arranged in the pedal box, the first bevel gear is arranged in the fixing box, the rotating rod is fixedly arranged in the first bevel gear, the second gear is fixedly arranged at the top end of the rotating rod, the first rack is arranged on the two outer walls of the right-angle-shaped fixing plate, the second gear is meshed with the first rack, the fixing block is connected in sliding ways at the two sides of the right-angle-shaped fixing plate, the fixing block is fixedly connected with the outer wall of the first rack, the spring is arranged in, a connecting rod is fixedly arranged at one end, close to the work table, of the pedal plate, a second rack is fixedly arranged at the top end of the connecting rod, a third gear is rotatably arranged in the pedal box and meshed with the second rack, a second bevel gear is fixedly arranged on the third gear and meshed with the first bevel gear.
CN202010333020.6A 2020-04-24 2020-04-24 Ceiling board draws device for circular arc line Withdrawn CN111502306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010333020.6A CN111502306A (en) 2020-04-24 2020-04-24 Ceiling board draws device for circular arc line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010333020.6A CN111502306A (en) 2020-04-24 2020-04-24 Ceiling board draws device for circular arc line

Publications (1)

Publication Number Publication Date
CN111502306A true CN111502306A (en) 2020-08-07

Family

ID=71867694

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010333020.6A Withdrawn CN111502306A (en) 2020-04-24 2020-04-24 Ceiling board draws device for circular arc line

Country Status (1)

Country Link
CN (1) CN111502306A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112518702A (en) * 2020-11-27 2021-03-19 邹东华 Industrial wall marking device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB669826A (en) * 1948-07-27 1952-04-09 Roland Evan Thomas Improvements in or relating to instruments for generating arcs of circles on inaccessible centres
CN1078188A (en) * 1992-04-30 1993-11-10 杨锦国 Universal marking-out rule
CN203726475U (en) * 2014-01-30 2014-07-23 傅波 Multipurpose woodworking punching straight rule
CN105818128A (en) * 2016-05-24 2016-08-03 董延群 Portable quick scribing device
CN208557465U (en) * 2018-08-13 2019-03-01 季建 A kind of quick positioning marking tool
CN208841389U (en) * 2018-09-06 2019-05-10 大连惠鸿达液压设备有限公司 A kind of high-voltage tube scribing tooling
CN110965747A (en) * 2019-12-19 2020-04-07 江西新森岱塑木科技有限公司 Plate distributing device for plastic-wood floor laying

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB669826A (en) * 1948-07-27 1952-04-09 Roland Evan Thomas Improvements in or relating to instruments for generating arcs of circles on inaccessible centres
CN1078188A (en) * 1992-04-30 1993-11-10 杨锦国 Universal marking-out rule
CN203726475U (en) * 2014-01-30 2014-07-23 傅波 Multipurpose woodworking punching straight rule
CN105818128A (en) * 2016-05-24 2016-08-03 董延群 Portable quick scribing device
CN208557465U (en) * 2018-08-13 2019-03-01 季建 A kind of quick positioning marking tool
CN208841389U (en) * 2018-09-06 2019-05-10 大连惠鸿达液压设备有限公司 A kind of high-voltage tube scribing tooling
CN110965747A (en) * 2019-12-19 2020-04-07 江西新森岱塑木科技有限公司 Plate distributing device for plastic-wood floor laying

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112518702A (en) * 2020-11-27 2021-03-19 邹东华 Industrial wall marking device

Similar Documents

Publication Publication Date Title
CN105397842B (en) The telescopic arm of pavement cutting machine device people
CN111502306A (en) Ceiling board draws device for circular arc line
CN108162073A (en) A kind of cutter device of the wooden finishing material of interior decoration
CN206898506U (en) Device for processing beveled
CN210081715U (en) Panel marking off processingequipment
CN207448588U (en) A kind of multidirectional cutter device for being used to build deformed thermal-insulating plate
CN114458024A (en) A mounting tool that is used for picture and text design culture wall to make
CN209619191U (en) A kind of glass production cutter device
CN211360868U (en) Novel cutting equipment is used in door and window preparation
CN109650732B (en) Be applied to glass substrate's on vacuum coating equipment marking device
CN220580475U (en) Fixing support for building
CN218398348U (en) Efficient cutting machine with marking function
CN110774334A (en) Manual arc cutting equipment of cystosepiment
CN220864146U (en) Cutting device of anti-smoke-exhaust composite air pipe
CN218174824U (en) Building glass cutting device
CN209566153U (en) A kind of finishing suspended ceiling modeling auxiliary cutting device
CN216059591U (en) Work platform for indoor building decoration design
CN205822724U (en) Building electromechanics is installed and is used electric piping grooving apparatus
CN214322031U (en) Cutting device for building decorative panel
CN217292439U (en) Cutting device is used in architectural decoration curtain production
CN213895622U (en) Circular glass cutting device convenient to remove
CN217299983U (en) Furred ceiling installation strutting arrangement
CN210529545U (en) Mobilizable electronic warning sign
CN212094672U (en) Cutting machine for installation and decoration construction
CN218054668U (en) Adjustable multifunctional plotter for mathematical teaching

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20200807