CN100352631C - Mechanism for quick tensioning band saw blade of woodworking band saw - Google Patents
Mechanism for quick tensioning band saw blade of woodworking band saw Download PDFInfo
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- CN100352631C CN100352631C CNB200510044126XA CN200510044126A CN100352631C CN 100352631 C CN100352631 C CN 100352631C CN B200510044126X A CNB200510044126X A CN B200510044126XA CN 200510044126 A CN200510044126 A CN 200510044126A CN 100352631 C CN100352631 C CN 100352631C
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- eccentric
- screw rod
- axle bed
- square box
- band
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Abstract
The present invention relates to a mechanism for quickly tensioning a band saw blade of a woodworking band saw, which belongs to woodworking machinery. The present invention comprises an upper box body, a handwheel, a screw rod, an upper shaft, an upper shaft seat, etc., wherein the upper part of the screw rod is sheathed with one sleeve pipe, the middle part of the screw rod penetrates through a square frame, and the lower part of the screw rod is provided with two locking screw nuts, the other sleeve pipe and a screw nut; the upper shaft seat is sheathed below the sleeve pipe, and a compression spring is installed between the upper shaft seat and the screw nut; the upper shaft seat and the square frame are installed between two guide rails fixed to the upper box body, an eccentric wheel is installed in the square frame, the maximum eccentric point and the minimum eccentric point of the eccentric wheel both are small planes, and the vertical center line of the eccentric wheel deviates from the vertical center line of the square frame. When the small plane of the minimum eccentric point is abutted on the upper edge of the square frame, a circular arc at the right side of the small plane is simultaneously abutted on the inner side at the right edge of the square frame. A pin shaft with a convex head penetrating through a hole on the upper box body is fixed in a shaft hole of the eccentric wheel, and a handle is installed on the convex head. The present invention has the advantages of quick and accurate regulation of tension degree and stable and safe tension, and is convenient for operation because the present invention has scales. The present invention can be widely applied to various woodworking band saws.
Description
Technical field
The invention belongs to the woodworking machinery technical field, more particularly relate to the design of the bands for band mechanism for quick tensioning of band saw.
Background technology
Band saw is made up of base, the frame that has upper box and lower box, last axle and lower shaft, driven big belt wheel and institutes such as initiatively big belt wheel, bands for band, workbench, motor, transmission mechanism and electric machine controller.The bands for band strainer is installed on its upper box.
Existing bands for band strainer comprises handwheel, be fixed on screw rod on the handwheel, be fixed on the parts such as nut on the axle.Screw rod is installed in the nut with its external screw thread.During rotation hand wheel, screw rod just can drive nut together with last axle and driven big belt wheel is last or following moving, thereby strengthen or reduce driven big belt wheel and the spacing between the belt wheel greatly initiatively, so just with the bands for band tensioning or relax.
Because the bands for band of band saw is generally longer, therefore tensioning or need continuously when lax that the rotation manual knob much encloses is regulated slowlyer, and regulates not accurate enoughly, more can not clearly indicate the size of the tensioning degree or the tensile force of bands for band.
What the applicant's name was called " the bands for band strainer of band saw " has proposed a kind of eccentric wheel structure in first to file, and it is the tension band saw blade fast.But after bands for band was tensioned, eccentric maximum eccentric point was in the extreme higher position, and is stable inadequately.In case and bands for band gently then damages work piece from the extreme higher position slippage, heavy then damage equipment, safety inadequately.
Summary of the invention
Purpose of the present invention just is to overcome above-mentioned shortcoming and defect, and a kind of bands for band mechanism for quick tensioning of band saw is provided, and the adjusting that it makes the bands for band tensioning degree rapidly, accurately, and is easy to operate; Have dial and pointer, can know the optimum position of indicating the bands for band tensioning degree; And its eccentric maximum eccentric was both stable when the extreme higher position everywhere, again safety.
In order to achieve the above object, the present invention includes the handwheel that is installed on the upper box, be fixed on screw rod on the handwheel, be installed in the parts such as driven big belt wheel going up axle, be installed in spool on the axle bed.Screw rod top also suit first sleeve pipe, and two holes up and down of a square box are passed at its middle part, and the bottom is installed with two locking nuts and suit second sleeve pipe.There is a last axle bed that has spring base and last hole to be contained on the screw rod below second sleeve pipe with borehole jack on it.The lower end of screw rod also is installed with a nut.The compression spring is installed between last axle bed and the nut.A pointer is installed between spring and the nut, about last axle bed is installed between two guide rails, and can along about two guide rails slide up and down, about two guide rails be fixed on the upper box, about square box also is installed between two guide rails, can along about two guide rails slide up and down, have two guide grooves up and down about said on two guide rails respectively, last axle bed each side fixing a lateral pin that is inserted into respectively in the lower guide channel, square box each side fixing a lateral pin that is inserted into respectively in the upper rail, eccentric wheel is installed in the square box.Be positioned at minimum and maximum eccentric part on this eccentric cylindrical and be facet, eccentric vertical center line departs from the vertical center line of square box.When the facet of eccentric minimum eccentric part was resisted against the top of square box, its right side circular arc was resisted against the inboard, the right of square box simultaneously.The hole that bearing pin that has a plush copper passes on the upper box is fixed in the eccentric axis hole, and being installed with on the plush copper of bearing pin can be with the handle of bearing pin rotation.
About last axle bed and square box two lateral pins make respectively axle bed and square box can only along about upper and lower two guide grooves of two guide rails slide up and down.
The upper box back side has slotted hole.The slotted hole corresponding position that is positioned at upper box on the last axle bed is provided with transparent body window.Be manufactured with scale mark on the transparent body window, between compression spring and the nut pointer be installed.The compression spring compresses or opens when moving up and down, and the nut drive pointer of screw rod lower end moves up and down with respect to the scale mark of transparent body window, that is has indicated the tensioning degree of bands for band.
The present invention is work like this: two locking nuts are upwards unscrewed along screw rod, made screw rod no longer bear the longitudinal tension force of compression spring.Then with the handle rotary pin shaft, force the facet at eccentric maximum eccentric place to be resisted against the top of square box, eccentric right side circular arc is resisted against the right of square box simultaneously.In this course, sleeve pipe, screw rod and the nut that eccentric wheel drives square box, screw rod top suit successively moves on fast, and will compress spring fast and compress.Rotate handwheel subsequently by hand, force the screw rod rotation, will move in the nut continuation slowly.This moment, nut continued to compress the spring compression, the very fast increase of tension force that the compression spring makes progress.When this tension force greater than last axle bed, go up axle, driven big belt wheel when being sleeved on the pressure of the bands for band on driven big belt wheel and the initiatively big belt wheel, just can make axle bed, go up on axle, the driven big belt wheel and move, also bands for band tensioning soon.When being tensioned to ideal position, with two locking nuts this locking position with screw rod, the scale that will go up the transparent body window on the axle bed simultaneously gets final product.After this just can make the band saw operate as normal.When need changing bands for band, only need the opposite spin handle, make the facet of eccentric minimum eccentric part be resisted against the top of square box, eccentric right side circular arc is resisted against the right of square box simultaneously.The bands for band that can relax is fast changed it.Subsequently more to the right rotating eccentricity wheel with the bands for band tensioning.During later on each tensioning, the ideal position that axle bed is positioned at demarcated.
Be facet in view of being positioned at minimum and maximum eccentric part on the eccentric cylindrical, therefore when bands for band is tensioned, when the facet at eccentric maximum eccentric place is resisted against the top of square box, bands for band is in stable state, and is very safe.This moment, eccentric right side circular arc was resisted against the right of square box simultaneously, with its locking position, and can't be again to right rotation slippage voluntarily.When the facet of eccentric minimum eccentric part was resisted against the top of square box, eccentric right side circular arc was resisted against the right of square box simultaneously.The also more impossible tensioning voluntarily of bands for band, equally very safe.
Above-mentioned adjustment process only is adapted to a kind of bands for band of size.The bands for band that is to say different size needs to be adjusted to different ideal positions according to above-mentioned steps, and carries out corresponding and different scale.
The nut of screw rod lower end and spring base are square, can avoid nut to rotate with screw rod.
The present invention makes the adjusting of bands for band tensioning degree quick, accurate, easy to operate; Have dial and pointer, can know the optimum position of indicating the bands for band tensioning degree; And its eccentric maximum eccentric was both stable when the extreme higher position everywhere, again safety.It can be widely used in the various band saws.
Description of drawings
Fig. 1 is a general structure schematic diagram of the present invention.
Fig. 2 is square box and eccentric structural representation.
Fig. 3 is the view behind Fig. 1 the removes driven big belt wheel.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is the A partial enlarged drawing of Fig. 4.
The specific embodiment
Embodiment 1.A kind of bands for band mechanism for quick tensioning of band saw is as Fig. 1～shown in Figure 5.Band saw by base 1, have upper box 2 and lower box 3 frame 4, go up axle 5 and lower shaft, driven big belt wheel 6 and initiatively big belt wheel, the parts such as bands for band 7, workbench 8, motor, transmission mechanism and electric machine controller that are sleeved on driven big belt wheel 6 and the initiatively big belt wheel are formed.
The bands for band mechanism for quick tensioning comprises the handwheel 9 that is installed on the upper box 2, be fixed on screw rod 10 on the handwheel 9, be installed in going up axle 5, be installed in the parts such as driven big belt wheel 6 on spools 5 on the axle bed 15.Screw rod 10 tops also suit sleeve pipe 13, and two holes up and down of a square box 12 are passed at its middle part, and the bottom is installed with two locking nuts 14 and suit another sleeve pipe 11.There is a last axle bed 15 that has spring base and last hole to be contained on the screw rod 10 below the sleeve pipe 11 with borehole jack on it.The lower end of screw rod 10 also is installed with a square nut 16.Compression spring 17 is installed between last axle bed 15 and the nut 16.A pointer 18 is installed between spring 17 and the nut 16.Last axle bed 15 be installed in can along between two guide rails 19 of lower slider, about two guide rails 19 be fixed on the upper box 2.Square box 12 also be installed in can along between two guide rails 19 of lower slider, eccentric wheel 20 is installed in the square box 12.Be positioned at minimum and maximum eccentric part on the cylindrical of eccentric wheel 20 and be facet 21 and 22, the vertical center line A of eccentric wheel 20 departs from the vertical center line B of square box 12.The hole that bearing pin 24 that has a plush copper 23 passes on the upper box 2 is fixed in the axis hole of eccentric wheel 20, and being installed with on the plush copper 23 of bearing pin 24 can be with the handle 25 of bearing pin 24 rotations.
When the facet 22 of the minimum eccentric part of eccentric wheel 20 was resisted against the top of square box 12, the right side circular arc of eccentric wheel 20 was resisted against the inboard, the right of square box 12 simultaneously.
Upper box 2 back sides have slotted hole.The slotted hole corresponding position that is positioned at upper box 2 on the last axle bed 15 is provided with transparent body window 27.Be manufactured with scale mark 26 on the transparent body window 27, between compression spring 17 and the nut 16 pointer 18 be installed.Compression spring 17 compresses or opens when moving up and down, and the nut 16 of screw rod 10 lower ends drives pointers 18 and moves up and down with respect to transparent body window 27 and scale mark 26, that is has indicated the tensioning degree of bands for band 7.
About have two guide grooves up and down on two guide rails 19 respectively.Last axle bed 15 each side fixing a lateral pin 29 that is inserted into respectively in the lower guide channel.Square box 12 each side fixing a lateral pin 29 that is inserted into respectively in the upper rail.About last axle bed 15 and square box 12 two lateral pins 29 make respectively axle bed 15 and square box 12 can only along about upper and lower two guide grooves of two guide rails 19 slide up and down.
The spring base of the nut 16 of screw rod 10 lower ends and compression spring 17 is square, can avoid nut 16 to rotate with screw rod 10.
Embodiment 1 makes the adjusting of bands for band tensioning degree quick, accurate, easy to operate; It has dial and pointer, can know the optimum position of indicating the bands for band tensioning degree; And its eccentric maximum eccentric is highly stable when the extreme higher position, fool proof everywhere.It can be widely used in the various band saws.
Claims (3)
1. the bands for band mechanism for quick tensioning of a band saw, it comprises the handwheel that is installed on the upper box, be fixed on the screw rod on the handwheel, be installed in the axle of going up on the axle bed, driven big belt wheel is installed on the axle with bearing, it is characterized in that screw rod top also suit first sleeve pipe, two holes up and down of a square box are passed at its middle part, the bottom is installed with two locking nuts and suit second sleeve pipe, axle bed on one is arranged below second sleeve pipe, the described axle bed of going up has spring base and last hole, last axle bed is contained on the screw rod by last borehole jack, the lower end of screw rod also is installed with a nut, the compression spring is installed between last axle bed and the nut, about last axle bed is installed between two guide rails, and can along about two guide rails slide up and down, about two guide rails be fixed on the upper box, about square box also is installed between two guide rails, can along about two guide rails slide up and down, have two guide grooves up and down about said on two guide rails respectively, last axle bed each side fixing a lateral pin that is inserted into respectively in the lower guide channel, square box each side fixing a lateral pin that is inserted into respectively in the upper rail, eccentric wheel is installed in the square box, be positioned at minimum and maximum eccentric part on the eccentric cylindrical and be facet, eccentric vertical center line departs from the vertical center line of square box, have the hole that the bearing pin of plush copper passes on the upper box and be fixed in the eccentric axis hole, on the plush copper of bearing pin handle is installed.
2. according to the bands for band mechanism for quick tensioning of the described band saw of claim 1, when the facet that it is characterized in that said eccentric minimum eccentric part was resisted against the top of square box, eccentric right side circular arc was resisted against the inboard, the right of square box simultaneously.
3. according to the bands for band mechanism for quick tensioning of claim 1 or 2 described band saws, it is characterized in that the said upper box back side has slotted hole, the corresponding position, slotted hole below that is positioned at upper box on the last axle bed has transparent body window, be manufactured with scale mark on the transparent body window, between compression spring and the nut pointer be installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510044126XA CN100352631C (en) | 2005-07-19 | 2005-07-19 | Mechanism for quick tensioning band saw blade of woodworking band saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510044126XA CN100352631C (en) | 2005-07-19 | 2005-07-19 | Mechanism for quick tensioning band saw blade of woodworking band saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1727135A CN1727135A (en) | 2006-02-01 |
| CN100352631C true CN100352631C (en) | 2007-12-05 |
Family
ID=35926733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510044126XA Expired - Fee Related CN100352631C (en) | 2005-07-19 | 2005-07-19 | Mechanism for quick tensioning band saw blade of woodworking band saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100352631C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103659957A (en) * | 2013-06-08 | 2014-03-26 | 成都天磐科技有限责任公司 | Cutting device capable of automatically collecting shavings |
| CN103659928B (en) * | 2013-12-19 | 2016-01-06 | 扬州海威机械制造有限公司 | A kind of wood working band sawing machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2919036A1 (en) * | 1979-05-11 | 1980-11-20 | Licentia Gmbh | Bandsaw with band tensioning device - has two-speed V=belt drive from electric motor to wheel remote from tensioner block |
| CN2379271Y (en) * | 1999-06-24 | 2000-05-24 | 张守信 | Device for adjusting tension of band transmission system |
| US6073531A (en) * | 1998-12-17 | 2000-06-13 | Chang; Chin-Chin | Saw blade adjusting device of a band sawing machine |
| CN2452692Y (en) * | 2000-12-11 | 2001-10-10 | 青岛地恩地工贸有限公司 | Woodwork beltsaw |
| CN2709090Y (en) * | 2004-05-13 | 2005-07-13 | 墩丰机械工业股份有限公司 | Fast band changing device of hand saw machine |
-
2005
- 2005-07-19 CN CNB200510044126XA patent/CN100352631C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2919036A1 (en) * | 1979-05-11 | 1980-11-20 | Licentia Gmbh | Bandsaw with band tensioning device - has two-speed V=belt drive from electric motor to wheel remote from tensioner block |
| US6073531A (en) * | 1998-12-17 | 2000-06-13 | Chang; Chin-Chin | Saw blade adjusting device of a band sawing machine |
| CN2379271Y (en) * | 1999-06-24 | 2000-05-24 | 张守信 | Device for adjusting tension of band transmission system |
| CN2452692Y (en) * | 2000-12-11 | 2001-10-10 | 青岛地恩地工贸有限公司 | Woodwork beltsaw |
| CN2709090Y (en) * | 2004-05-13 | 2005-07-13 | 墩丰机械工业股份有限公司 | Fast band changing device of hand saw machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1727135A (en) | 2006-02-01 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071205 Termination date: 20160719 |