CN2772762Y - Fast tensioning mechanism of carpenter bandsaw - Google Patents
Fast tensioning mechanism of carpenter bandsaw Download PDFInfo
- Publication number
- CN2772762Y CN2772762Y CN 200520080413 CN200520080413U CN2772762Y CN 2772762 Y CN2772762 Y CN 2772762Y CN 200520080413 CN200520080413 CN 200520080413 CN 200520080413 U CN200520080413 U CN 200520080413U CN 2772762 Y CN2772762 Y CN 2772762Y
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- China
- Prior art keywords
- eccentric
- square box
- bands
- guide rails
- screw rod
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Abstract
The utility model relates to a quick tensioning mechanism of a woodworking band saw blade, which belongs to woodworking machinery. The utility model comprises an upper box body, a hand wheel, a screw rod, an upper shaft, an upper shaft seat, etc., wherein the upper part of the screw rod is sheathed with a casing tube, the middle part penetrates through a square frame, and the lower part is provided with two lock nuts, the other casing tube and a nut. The lower surface of the casing tube is sheathed with the upper shaft seat; a compression spring is arranged between the upper shaft seat and the nut; the upper shaft seat and the square frame are arranged between two guide rails which are fixed on the upper box body; an eccentric wheel is arranged in the square frame; both the maximum and the minimum eccentric parts of the eccentric wheel are small plane surfaces; a vertical shaft line of the eccentric wheel deviates from the vertical shaft line of the square frame; when the small plane surface of the minimum eccentric part is abutted at the top of the square frame, a circular arc at the right side of the small plane surface of the minimum eccentric part is simultaneously abutted on the right side of the square frame. A pin shaft provided with a raised head penetrates through a hole on the upper box body and is fixed in a shaft hole of the eccentric wheel; a handle is arranged on the raised head. The utility model has the advantages of quick and accurate regulation of tensioning degrees, convenient operation with scales and stability and safety after tension; the utility model can be used in various woodworking band saws.
Description
Technical field
The utility model belongs to the woodworking machinery technical field, more particularly relates to the improvement 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 Zhang Jingli 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
The purpose of this utility model 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 utility model comprises the handwheel that is installed on the upper box, is fixed on screw rod on the handwheel, is 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 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 another sleeve pipe.There is a last axle bed that has spring base and last hole to be contained on the screw rod below the 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, last axle bed be installed in can along about between two guide rails that slide up and down of two guide rails, about two guide rails be fixed on the upper box.Square box also be installed in can along about between two guide rails that slide up and down of two guide rails, eccentric wheel is installed on the square box.Be positioned at minimum and maximum eccentric part on the eccentric axis and be facet, eccentric vertical axis departs from the vertical axis of square box.When the facet of eccentric minimum eccentric part was resisted against the top of square box, eccentric right side circular arc was resisted against on 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.
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 the transparent body window of band scale mark.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.
About have two guide grooves up and down 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.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 utility model 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 axis, 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 utility model 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 utility model.
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 about between two guide rails 19 that slide up and down of two guide rails 19, about two guide rails 19 be fixed on the upper box 2.Square box 12 also be installed in can along about between two guide rails 19 that slide up and down of two guide rails 19, eccentric wheel 20 is installed on the square box 12.Being positioned at minimum and maximum eccentric part on the axis of eccentric wheel 20 is facet 21 and 22, and the vertical axis A of eccentric wheel 20 departs from the vertical axis B of square box 12.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 on the right of square box 12 simultaneously.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 on 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 the transparent body window 27 of band scale mark 26.Be manufactured with graduated scale 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 (5)
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 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 another sleeve pipe, there is a last axle bed that has spring base and last hole to be contained on the screw rod below the 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, last axle bed be installed in can along about between two guide rails that slide up and down of two guide rails, about two guide rails be fixed on the upper box, square box also be installed in can along about between two guide rails that slide up and down of two guide rails, eccentric wheel is installed on the square box, be positioned at minimum and maximum eccentric part on the eccentric axis and be facet, eccentric vertical axis departs from the vertical axis 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 claim 1 or 2 described band saws, 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 on 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.
4. according to the bands for band mechanism for quick tensioning of claim 1 or 2 described band saws, it is characterized in that having two guide grooves up and down on two guide rails respectively about said, 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.
5. according to the bands for band mechanism for quick tensioning of the described band saw of claim 3, it is characterized in that having two guide grooves up and down on two guide rails respectively about said, 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.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520080413 CN2772762Y (en) | 2005-02-04 | 2005-02-04 | Fast tensioning mechanism of carpenter bandsaw |
| TW094211348U TWM291884U (en) | 2005-02-04 | 2005-07-05 | Quick tightening mechanism used in carpenter band saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520080413 CN2772762Y (en) | 2005-02-04 | 2005-02-04 | Fast tensioning mechanism of carpenter bandsaw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2772762Y true CN2772762Y (en) | 2006-04-19 |
Family
ID=36708018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520080413 Expired - Fee Related CN2772762Y (en) | 2005-02-04 | 2005-02-04 | Fast tensioning mechanism of carpenter bandsaw |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN2772762Y (en) |
| TW (1) | TWM291884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104608199A (en) * | 2015-01-14 | 2015-05-13 | 李先强 | Vertical band saw cutter |
-
2005
- 2005-02-04 CN CN 200520080413 patent/CN2772762Y/en not_active Expired - Fee Related
- 2005-07-05 TW TW094211348U patent/TWM291884U/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104608199A (en) * | 2015-01-14 | 2015-05-13 | 李先强 | Vertical band saw cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM291884U (en) | 2006-06-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060419 Termination date: 20140204 |