CN1966221A - Safe turn-over saw - Google Patents
Safe turn-over saw Download PDFInfo
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- CN1966221A CN1966221A CN 200610154850 CN200610154850A CN1966221A CN 1966221 A CN1966221 A CN 1966221A CN 200610154850 CN200610154850 CN 200610154850 CN 200610154850 A CN200610154850 A CN 200610154850A CN 1966221 A CN1966221 A CN 1966221A
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- Prior art keywords
- workbench
- saw
- cam
- motor
- frame
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Abstract
The invention relates to a safety turnover saw, which comprises frame, workbench hinged to the frame with hinge axle, and saw frame axially supported on workbench, wherein said saw frame is mounted with motor and saw plate driven by motor. The invention is characterized in that: the frame has safe switch which will close contactor when the workbench is horizontal and break off the contactor when the workbench is not horizontal; and the contactor is serially connected into power circuit of motor. Compared with present technique, the invention can avoid man control, and cut off power by safe switch, to improve safety.
Description
Technical field
The present invention relates to the multifunctional saw in a kind of woodworking machinery, specifically refer to a kind of flip over saw with inclined cutting saw and bench saw function.
Background technology
At present, the saw body framework that flip over saw mainly comprises frame, is bearing in the workbench on the frame and makes the locking positioning mechanism of workbench horizontal location and saw blade is installed by hinging supporting shaft, wherein, saw body framework is hinged again on work top.During use, when saw body framework is in the top of workbench, flip over saw promptly becomes inclined cutting saw.At this moment, as long as push saw body framework routinely downwards, saw blade descends thereupon and cuts the material to be cut that is fixed on the workbench.And overturn 180 ° around hinging supporting shaft with workbench when sawing the body framework, and after carrying out horizontal location by locking positioning mechanism, the saw body framework of this moment is positioned at the workbench below, saw blade runs through workbench by the saw blade groove, and the upper edge of saw blade is exposed on the table surface, at this moment, along the table surface material to be cut that slides, just can realize the function of bench saw.So flip over saw diverse in function of the prior art, thereby be widely used in the machine cuts.But in use find: because the rotation of saw blade realizes after by electrical power, and the on/off of motor is by Artificial Control, therefore in above-mentioned two kinds of pattern transfer processes, operating personnel can forget the cut-out motor power unavoidably, perhaps on one side at the upset workbench, the phenomenon of electrical power appears on one side again unintentionally, so such flip over saw is as if improper use, can injure human body, therefore also exist potential safety hazard.
Summary of the invention
Technical problem to be solved by this invention is at present situation of the prior art, provide a kind of can force disconnect in the working platform overturning process safe turn-over machine of motor power.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: this safe turn-over saw comprises frame, be hinged on workbench on the frame and pivot by hinging supporting shaft props up saw body framework on workbench, on described saw body framework, motor is installed and by motor-driven saw blade, it is characterized in that: on described frame, also be provided with at described workbench and be in horizontal down its closing of contact and be in the safety switch that its contact disconnects under the non-standard state, and the contact of this safety switch is serially connected in the electric power loop of described motor at described workbench.
Described safety switch can be the one stroke switch, is provided with a roller in the drive rod outer end of the trip switch, contacts with the cam of the coaxial setting of described hinging supporting shaft is corresponding with above-mentioned rollers.In the process of working platform overturning, cam and roller both relatively rotated like this, utilized the shape of cam simultaneously again, pushed or discharged roller, the contact of travel switch is made cut-off action accordingly, thereby force forced motor to be cut off the power supply.
In such scheme, described cam can be sleeved on the hinging supporting shaft.Also can be designed to be integral the structure of part with hinging supporting shaft.Perhaps cam is located on the workbench, and with workbench be integral piece.
Simultaneously, described cam can be periphery cam, also can take turns for concavo-convex.
Certainly, above-mentioned safety switch also can adopt photoelectric sensor, and should be provided with through hole this moment on hinging supporting shaft.When workbench was in level, photoelectric sensor can read this through hole signal, and sent signal at its output, made its contact be in closure state, thereby made motor energy operate as normal.In case and workbench rotates, then its contact disconnects, the forced motor outage.
Above-mentioned safety switch can also adopt electromagnetic sensor, is provided with magnetic block accordingly on rotating shaft or frame.In like manner, when workbench is in level, after this electromagnetic sensor reads the signal of magnetic block, makes its closing of contact, and make electrical power work.Otherwise, then make the motor outage.Therefore adopt such sensor class safety switch, can reach the purpose of forced motor outage equally.
Compared with prior art, because having installed with the operating position variation, the present invention make its contact be in the corresponding safety switch that cut-offs state, therefore when working platform overturning, need not Artificial Control, can force the forced motor outage by this safety switch, thereby improved the security of operation widely, so the present invention is worth applying on existing flip over saw.
Description of drawings
Fig. 1 is the side schematic view of first embodiment of the invention;
Fig. 2 is roller and a cam contact position status architecture schematic diagram among Fig. 1;
Fig. 3 is for being in structural representation under the rollover states when workbench among Fig. 2;
Fig. 4 is for being in safety switch construction schematic diagram under the level when workbench in the second embodiment of the invention.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Embodiment 1: as shown in Figure 1, this safe turn-over saw comprises the horizontal locking positioning mechanism 3 of frame 1, workbench 2, workbench and is installed in saw body framework 5 on the workbench by rotating shaft 4, wherein, workbench 1 is a square plate, be respectively equipped with coaxial hinging supporting shaft 6 on its two sides, each hinging supporting shaft inserts respectively in the installing hole on the frame accordingly.Can make workbench 2 do 180 ° crankmotion like this, and when workbench goes to level, can be located fixing by the horizontal locking positioning mechanism 3 of routine around this hinging supporting shaft 6.And described saw body framework 5 adopts conventional inclined cutting saw structure, promptly directly drives saw blade 51 rotations by gear drive by motor, is furnished with flexible blade guard 52 simultaneously outside saw blade, injures human body to prevent saw blade.
In the present embodiment, also be fixed with travel switch 7 on the frame below the above-mentioned hinging supporting shaft 1, the drive rod outer end of the trip switch is provided with roller 71, and the contact of travel switch is serially connected in the electric power loop of motor 51.Be set with the cam that is provided with its concentric on the described hinging supporting shaft 6, and the rolling that can contact with roller 71 of this cam.Here, cam design becomes periphery cam 8a, and when workbench 2 was in level, roller 71 contacted with the plane of periphery cam 8a, and as shown in Figure 2, the contact of travel switch 7 is in closure state, if give electrical power this moment, can drive the saw blade rotation.And when workbench is in rollover states, periphery cam 8a rotates thereupon, at this moment, roller 71 contacts with the periphery of periphery cam 8a, as shown in Figure 3, periphery cam 8a forces roller 71 also to move down when rotating, and the contact of travel switch is disconnected, promptly disconnected the electric power loop of motor, realized the purpose of flip over saw pressure outage with this.
Embodiment 2: it is with the above-mentioned first embodiment difference: cam design becomes the concavo-convex 8b of wheel, when workbench is in level, roller 71 contacts with the concave surface of the concavo-convex 8b of wheel, as shown in Figure 4, the contact of travel switch is in closure state, connect power supply, just can make the flip over saw operate as normal.And when workbench is in rollover states, the concavo-convex 8b of wheel rotates thereupon, at this moment, roller 71 contacts with the periphery of the concavo-convex 8b of wheel, force roller to rotate and move down, make the contact of travel switch be converted into off-state, make motor be in off-position simultaneously by closure state, obviously, such structure can realize forcing the purpose of cutting off the power supply equally.
Claims (7)
1, a kind of safe turn-over saw, it comprises frame, be hinged on workbench on the frame and pivot by hinging supporting shaft props up saw body framework on workbench, on described saw body framework, motor is installed and by motor-driven saw blade, it is characterized in that: on described frame, also be provided with at described workbench and be in horizontal down its closing of contact and be in the safety switch that its contact disconnects under the non-standard state, and the contact of this safety switch is serially connected in the electric power loop of described motor at described workbench.
2, safe turn-over saw according to claim 1, it is characterized in that: described safety switch is the one stroke switch, drive rod outer end at the trip switch is provided with a roller, contacts with the cam of the coaxial setting of described hinging supporting shaft is corresponding with above-mentioned rollers.
3, safe turn-over saw according to claim 2 is characterized in that: described cam is sleeved on the described hinging supporting shaft.
4, safe turn-over saw according to claim 2 is characterized in that: described cam and described hinging supporting shaft are integral piece.
5, safe turn-over saw according to claim 2 is characterized in that: described cam is located on the described workbench, and with described workbench be integral piece.
6, according to the described safe turn-over saw of the arbitrary claim of claim 2 to 5, it is characterized in that: described cam is a periphery cam.
7, according to the described safe turn-over saw of the arbitrary claim of claim 2 to 5, it is characterized in that: described cam is concavo-convex the wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610154850 CN1966221A (en) | 2006-11-24 | 2006-11-24 | Safe turn-over saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610154850 CN1966221A (en) | 2006-11-24 | 2006-11-24 | Safe turn-over saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1966221A true CN1966221A (en) | 2007-05-23 |
Family
ID=38075292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610154850 Pending CN1966221A (en) | 2006-11-24 | 2006-11-24 | Safe turn-over saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1966221A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108393538A (en) * | 2018-01-22 | 2018-08-14 | 许洪亮 | A kind of dedusting type cutting equipment |
-
2006
- 2006-11-24 CN CN 200610154850 patent/CN1966221A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108393538A (en) * | 2018-01-22 | 2018-08-14 | 许洪亮 | A kind of dedusting type cutting equipment |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |