CN108032157A - A kind of plank uniform grinding device - Google Patents
A kind of plank uniform grinding device Download PDFInfo
- Publication number
- CN108032157A CN108032157A CN201711244133.3A CN201711244133A CN108032157A CN 108032157 A CN108032157 A CN 108032157A CN 201711244133 A CN201711244133 A CN 201711244133A CN 108032157 A CN108032157 A CN 108032157A
- Authority
- CN
- China
- Prior art keywords
- piston
- fixed
- air bag
- mounting base
- plank
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B7/28—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/12—Devices for exhausting mist of oil or coolant; Devices for collecting or recovering materials resulting from grinding or polishing, e.g. of precious metals, precious stones, diamonds or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The present invention relates to Furniture manufacturing field, specifically discloses a kind of plank uniform grinding device；Including rack, workpiece polishing mechanism, conveyer belt and mounting base, fin is fixed with conveyer belt, mounting base bottom is fixed with cylinder, wind turbine is fixed with rack；Workpiece polishing mechanism includes polishing part, screw, stepper motor, first piston and second piston, and connecting rod is fixed between first piston and second piston；Air bag is respectively and fixedly provided with first piston and second piston, air bag one end is fixed in mounting base, the other end is separately fixed on first piston and second piston, outgassing nonreturn valve and breather check valve are fixed with air bag, filter screen is fixed with air bag, air bag is equipped with dust removal port.The sanding apparatus of this programme uniformly can polish plank.
Description
Technical field
The present invention relates to Furniture manufacturing field, and in particular to a kind of wood plank processing device.
Background technology
Timber, i.e., wooden door, can be divided into many types according to material, technique and purposes, be widely used in the people, commercialization
Building.Since interior door is generally without considering antitheft factor, so beautiful timber is the first choice of consumer, quilt in fitting up indoors
Widely apply.Timber needs timber cutting into plank when producing, and then polishes plank, grinds off the wood thorn of board surface
And it is raised, make board surface smooth.
Traditional polishing is that worker's hand holds sand paper, is polished repeatedly board surface with sand paper, but this polishing needs
Want worker's hand pressing plank, very arduously, and hand holds sand paper and is also difficult to keep the pressure between sand paper and plank equal, the two
When pressure increases, polishing degree increase of the sand paper to plank, so being difficult to uniformly polish to plank.Secondly, polished
Cheng Zhonghui produces sawdust, and the granularity of sawdust is smaller, easily flies into air, reduces environmental quality, and sawdust is gone back after being sucked by worker
It can influence the health of worker.In addition, sawdust can be caught in the recess of sand paper, weaken the polishing effect of sand paper, also result in
The polishing of sand paper is uneven.
The content of the invention
It is an object of the invention to provide a kind of door-plate sanding apparatus uniformly polished plank.
To reach above-mentioned purpose, the technical scheme is that：A kind of plank uniform grinding device, including rack, polishing
Mechanism, the conveyer belt being located in rack and mounting base, are fixed with multiple fins on conveyer belt, mounting base bottom is fixed with two points
Not Wei Yu conveyer belt both sides cylinder, the push rod of cylinder is fixed in rack, is fixed with what outlet side was connected with cylinder in rack
Wind turbine；Workpiece polishing mechanism includes polishing part, the stepper motor and screw that are rotated with the screw of mounting base rotation connection, driving screw
The first piston and second piston of threaded connection, are fixed with connecting rod between first piston and second piston, polishing part is fixed on company
On bar；Air bag is respectively and fixedly provided with first piston and second piston, two air bag one end are fixed in mounting base, the other end is solid respectively
It is scheduled on first piston and second piston, some outgassing nonreturn valves and the breather check valve being in communication with the outside is fixed with air bag,
Outgassing nonreturn valve is located at air bag lower part, and filter screen is fixed with air bag, and air bag is equipped with closed dust removal port.
During polishing plank, plank is put on a moving belt, conveyer belt makes plank move closer to workpiece polishing mechanism, is moved in plank
Wind turbine is opened when below to polishing part, the height of mounting base is adjusted, polishing part is just pressed on plank, closes wind turbine.
Stepper motor is opened again, when stepper motor rotates forward, screw rotates forward, and since polishing part is pressed on plank, connecting rod can not rotate at this time,
Therefore first piston and second piston can not rotate, since first piston and second piston form screw thread pair with screw, first lives
Plug, second piston and connecting rod are moved to the left, and polishing part is moved to the left, and is polished plank.Then Driving Stepping Motor is anti-
Turn, similarly, polishing part moves right, and so repeatedly, polishing part constantly moves left and right, and polishes plank.
When screw rotates forward, first piston and second piston are moved to the left, and the air bag volume in left side reduces, in air bag at this time
Pressure increases, and gas sprays from outgassing nonreturn valve, and the sawdust formed when polishing is blown off polishing part；The air bag volume on right side increases
Greatly, the pressure in air bag reduces, and extraneous air mixes the sawdust blown afloat and is inhaled into from breather check valve in the air bag on right side,
Reduce the sawdust in air.Sawdust into air bag is stored in air bag, finally opens dust removal port, and sawdust is taken from air bag
Go out.
This programme has the beneficial effect that：(1) after the height that mounting base is adjusted by cylinder, between polishing part and conveyer belt
Distance be certain, will not change with polishing, so polishing degree of the polishing part to plank is identical, polishing part can be equal
Even polishes plank.
(2) when stepper motor is constantly rotated forward, inverted, first piston and second piston constantly to the left and move right, two
Air bag is constantly compressed, stretched, and when air bag is compressed, the gas in air bag is sprayed out of air bag, can be by the wood produced of polishing
Bits blow off, and avoid sawdust from being attached in the groove of polishing part, so as to avoid the polishing decreased effectiveness of polishing part, further make polishing
Part uniformly polishes plank.
(3) secondly, when air bag is stretched, extraneous air mixes sawdust and is inhaled into from breather check valve in air bag, sawdust
Stopped and can not be discharged from outgassing nonreturn valve by filter screen, effectively reduce the sawdust in air, then reduce what can be sucked by worker
Sawdust, and polishing can carry out automatically, worker need not further avoid worker from sucking sawdust close to burnishing part, protect worker
Health.
(4) adjustment cylinder can adjust the height of mounting base, change the distance between polishing part and conveyer belt, with suitable
Answer the plank of different-thickness.
Preferred solution one, is improved, air bag is located at screw periphery as to the further of base case.Air bag is located at outside screw
Week, screw play air bag spacing effect, will not downwards fall under the effect of gravity in the middle part of air bag, can drop to wood to avoid air bag
On plate.
Preferred solution two, is improved, breather check valve is located at air bag top, filter screen as to the further of preferred solution one
Below breather check valve.Filter screen avoids sawdust from blocking outlet unidirectional between breather check valve and outgassing nonreturn valve
Valve.
Preferred solution three, is improved, connecting rod is located at screw periphery as to the further of preferred solution two.Connecting rod can be to avoid
The sawdust that polishing produces is caught in first piston and first piston or second piston is either avoided between second piston and screw by card
Extremely.
Preferred solution four, is improved, connecting rod is T-shaped, and polishing part is fixed on T-shaped connecting rod as to the further of preferred solution three
Vertical portion lower end.Polishing part or so does not have block piece at this time, can more easily be pressed on plank.
Preferred solution five, improves as to the further of preferred solution four, is fixed with guide rod in mounting base, guide rod passes through
Wear first piston and second piston and both ends are each attached in mounting base.Guide rod plays guiding to first piston and second piston
Effect, when screw rotates, first piston and second piston will not rotate under the action of guide rod, at this time polishing part
It will not shake, pressure of the polishing part everywhere between plank can be made equal, further make polishing evenly.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of plank uniform grinding device embodiment of the present invention.
Embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments：
Reference numeral is：Rack 1, plank 2, mounting base 3, cylinder 31, screw 32, guide rod 33, connecting rod 34, pedestal 35,
Sand paper 36, first piston 37, second piston 38, stepper motor 39, air bag 4, breather check valve 41, outgassing nonreturn valve 42, dedusting
Mouth 43, filter screen 44, conveyer belt 5.
As shown in Figure 1, a kind of 2 uniform grinding device of plank, including rack 1, workpiece polishing mechanism, conveyer belt 5 and mounting base 3,
Conveyer belt 5 is arranged in rack 1, integrally formed with multiple fins on conveyer belt 5.Rack 1, mounting base 3 are run through in 3 lower part of mounting base
Bottom is welded with two cylinders 31 for being located at 5 both sides of conveyer belt respectively, and the push rod of cylinder 31 is welded in rack 1, is used in rack 1
Bolt is fixed with wind turbine, and the outlet side of wind turbine is connected by pipeline with cylinder 31.
Workpiece polishing mechanism includes polishing part, screw 32, stepper motor 39, first piston 37 and second piston 38, and screw 32 is left
Mounting base 3 is run through at right both ends, and 32 right end of screw is welded with rotating wheel, and stepper motor 39 is fixed by bolts in mounting base 3, step
The driving wheel that can be engaged with rotating wheel is welded with the output shaft of stepper motor 39.First piston 37 and second piston 38 are located at screw
32 peripheries are simultaneously threadedly coupled with screw 32, and some balls, first piston 37, are equipped between first piston 37 and second piston 38
Two pistons 38 and screw 32 are coaxial, and mounting base 3 is equipped with guide rod 33, and guide rod 33 runs through first piston 37 and second piston
38, and 33 both ends of guide rod are welded in mounting base 3.Connecting rod 34 is welded between first piston 37 and second piston 38, even
Bar 34 is T-shaped, and connecting rod 34 is located at 32 periphery of screw, and polishing part is welded on the lower end of 34 vertical portion of T-shaped connecting rod, in the present embodiment
Polishing part include the pedestal 35 that is welded on connecting rod 34 and the sand paper 36 for being glued to 35 lower surface of pedestal.First piston 37 and
Being glued on two pistons 38 has air bag 4, and air bag 4 is located at 32 periphery of screw, and two air bags 4 are glued to peace close to 3 one end of mounting base
Fill on seat 3, air bag 4 glues the breather check valve 41 and some outgassing nonreturn valves 42 for being connected to and being in communication with the outside, outgassing nonreturn valve 42
Positioned at 4 lower part of air bag, breather check valve 41 is located at 4 top of air bag.Being glued in air bag 4 has filter screen 44, and air bag 4 is equipped with dedusting
Mouth 43 and sprue, sprue can be caught in dust removal port 43.
During polishing plank 2, plank 2 is placed on conveyer belt 5, conveyer belt 5 makes plank 2 move closer to workpiece polishing mechanism, plank 2
Wind turbine is opened when being moved to 36 lower section of sand paper, the height of mounting base 3 is adjusted, sand paper 36 is just pressed on plank 2, is closed
Wind turbine.Stepper motor 39 is opened again, and when stepper motor 39 rotates forward, screw 32 rotates forward, since 33 both ends of guide rod are welded on installation
On seat 3, first piston 37 and second piston 38 can not rotate, since first piston 37 and second piston 38 are formed with screw 32
Screw thread pair, first piston 37, second piston 38 and connecting rod 34 are moved to the left, and sand paper 36 is moved to the left, and plank 2 is beaten
Mill.Then Driving Stepping Motor 39 inverts, and similarly, sand paper 36 moves right, and so repeatedly, sand paper 36 constantly moves left and right, right
Plank 2 is polished.
When screw 32 rotates forward, first piston 37 and second piston 38 are moved to the left, the volume reduction of left side air bag 4 at this time,
Pressure increase in air bag 4, gas sprays from outgassing nonreturn valve 42, and the sawdust formed when polishing is blown off sand paper 36；Right side
The increase of 4 volume of air bag, the pressure in air bag 4 reduces, and extraneous air mixes the sawdust that is blown afloat from 41 quilt of breather check valve
Suck in the air bag 4 on right side, reduce the sawdust in air.Sawdust into air bag 4 is subject to the stop of filter screen 44 to be stored in
In air bag 4, dust removal port 43 is finally opened, sawdust is taken out from air bag 4.
Above-described is only the preferred embodiment of the present invention, it is noted that for those skilled in the art,
Without departing from the inventive concept of the premise, several modifications and improvements can also be made, these should also be considered as the guarantor of the present invention
Scope is protected, these effects and practical applicability for implementing all without the influence present invention.The present invention omits the technology of description, shape
Shape, construction part are known technology.
Claims (6)
- A kind of 1. plank uniform grinding device, it is characterised in that including rack, workpiece polishing mechanism, the conveyer belt being located in rack and Mounting base, is fixed with multiple fins on the conveyer belt, the mounting base bottom is fixed with two and is located at conveyer belt both sides respectively Cylinder, the push rod of the cylinder is fixed in rack, and the wind turbine that outlet side is connected with cylinder is fixed with the rack；It is described Workpiece polishing mechanism includes polishing part, the stepper motor rotated with the screw of mounting base rotation connection, driving screw, and wire rod thread The first piston and second piston of connection, are fixed with connecting rod between the first piston and second piston, the polishing part is fixed On connecting rod；Air bag is respectively and fixedly provided with the first piston and second piston, two air bag one end are fixed in mounting base, are another End is separately fixed on first piston and second piston, and some outgassing nonreturn valves are fixed with the air bag and are in communication with the outside Breather check valve, the outgassing nonreturn valve are located at air bag lower part, filter screen are fixed with the air bag, the air bag is equipped with can The dust removal port of closing.
- 2. plank uniform grinding device according to claim 1, it is characterised in that the air bag is located at screw periphery.
- 3. plank uniform grinding device according to claim 2, it is characterised in that the breather check valve is located on air bag Portion, the filter screen are located at below breather check valve.
- 4. plank uniform grinding device according to claim 3, it is characterised in that the connecting rod is located at screw periphery.
- 5. plank uniform grinding device according to claim 4, it is characterised in that the connecting rod is T-shaped, the polishing part It is fixed on the lower end of the vertical portion of T-shaped connecting rod.
- 6. plank uniform grinding device according to claim 5, it is characterised in that guiding is fixed with the mounting base Bar, the guide rod are each attached in mounting base through first piston and second piston and both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711244133.3A CN108032157A (en) | 2017-11-30 | 2017-11-30 | A kind of plank uniform grinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711244133.3A CN108032157A (en) | 2017-11-30 | 2017-11-30 | A kind of plank uniform grinding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108032157A true CN108032157A (en) | 2018-05-15 |
Family
ID=62094814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711244133.3A Pending CN108032157A (en) | 2017-11-30 | 2017-11-30 | A kind of plank uniform grinding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108032157A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108723507A (en) * | 2018-05-29 | 2018-11-02 | 重庆市璧山区合成机械制造有限公司 | Gear machining equipment |
| CN108908048A (en) * | 2018-07-17 | 2018-11-30 | 重庆祥越管道配件制造有限公司 | Chemical pipeline processing unit (plant) |
| CN109531803A (en) * | 2018-12-29 | 2019-03-29 | 重庆市永川区红地建材有限责任公司 | Brickmaking conveying device |
| CN110026857A (en) * | 2019-03-18 | 2019-07-19 | 吉首大学 | A kind of multi-angle polished device for computer keyboard metal keyboard shell |
| CN111215983A (en) * | 2020-02-12 | 2020-06-02 | 闻金山 | Full-automatic workpiece locking surface grinding machine |
| CN115070112A (en) * | 2022-06-09 | 2022-09-20 | 浙江创格科技股份有限公司 | Device of cutting of pencil bellows |
| CN115722988A (en) * | 2022-11-24 | 2023-03-03 | 济南齐鲁园林古建筑工程公司 | Ancient building surface repairing equipment and process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19602938C2 (en) * | 1996-01-27 | 1998-07-16 | Staehle Gmbh H | Intermediate paint sanding machine |
| CN104889842A (en) * | 2015-06-26 | 2015-09-09 | 安庆联泰电子科技有限公司 | Special flattening device of wooden surface flattening machine |
| CN205734233U (en) * | 2016-06-22 | 2016-11-30 | 江苏树仁木业有限公司 | A kind of sheet material pressurization sanding apparatus |
| CN205852432U (en) * | 2016-06-18 | 2017-01-04 | 新昌县兴旺轴承有限公司 | A kind of timber sand mill being easy to cleaning |
| CN106312825A (en) * | 2016-10-26 | 2017-01-11 | 佛山市翠微自动化科技有限公司 | Environment-friendly dust sucking and filtering mechanism for grinding plates |
| CN206029581U (en) * | 2016-09-05 | 2017-03-22 | 上海汉虹精密机械有限公司 | Gasbag formula double -sided lapping burnishing machine |
-
2017
- 2017-11-30 CN CN201711244133.3A patent/CN108032157A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19602938C2 (en) * | 1996-01-27 | 1998-07-16 | Staehle Gmbh H | Intermediate paint sanding machine |
| CN104889842A (en) * | 2015-06-26 | 2015-09-09 | 安庆联泰电子科技有限公司 | Special flattening device of wooden surface flattening machine |
| CN205852432U (en) * | 2016-06-18 | 2017-01-04 | 新昌县兴旺轴承有限公司 | A kind of timber sand mill being easy to cleaning |
| CN205734233U (en) * | 2016-06-22 | 2016-11-30 | 江苏树仁木业有限公司 | A kind of sheet material pressurization sanding apparatus |
| CN206029581U (en) * | 2016-09-05 | 2017-03-22 | 上海汉虹精密机械有限公司 | Gasbag formula double -sided lapping burnishing machine |
| CN106312825A (en) * | 2016-10-26 | 2017-01-11 | 佛山市翠微自动化科技有限公司 | Environment-friendly dust sucking and filtering mechanism for grinding plates |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108723507A (en) * | 2018-05-29 | 2018-11-02 | 重庆市璧山区合成机械制造有限公司 | Gear machining equipment |
| CN108723507B (en) * | 2018-05-29 | 2019-05-24 | 重庆市璧山区合成机械制造有限公司 | Gear machining equipment |
| CN108908048A (en) * | 2018-07-17 | 2018-11-30 | 重庆祥越管道配件制造有限公司 | Chemical pipeline processing unit (plant) |
| CN109531803A (en) * | 2018-12-29 | 2019-03-29 | 重庆市永川区红地建材有限责任公司 | Brickmaking conveying device |
| CN110026857A (en) * | 2019-03-18 | 2019-07-19 | 吉首大学 | A kind of multi-angle polished device for computer keyboard metal keyboard shell |
| CN110026857B (en) * | 2019-03-18 | 2020-05-08 | 吉首大学 | A multi-angle grinding device for calculating key dish metal keyboard shell |
| CN111215983A (en) * | 2020-02-12 | 2020-06-02 | 闻金山 | Full-automatic workpiece locking surface grinding machine |
| CN115070112A (en) * | 2022-06-09 | 2022-09-20 | 浙江创格科技股份有限公司 | Device of cutting of pencil bellows |
| CN115722988A (en) * | 2022-11-24 | 2023-03-03 | 济南齐鲁园林古建筑工程公司 | Ancient building surface repairing equipment and process |
| CN115722988B (en) * | 2022-11-24 | 2024-01-16 | 济南齐鲁园林古建筑工程公司 | Ancient building surface repairing equipment and technology |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20180515 |