CN112454565A

CN112454565A - Intelligent safety protection device of precise woodworking bench saw

Info

Publication number: CN112454565A
Application number: CN202011369631.2A
Authority: CN
Inventors: 贾方
Original assignee: Yangzhou Research Institute Of Southeast University
Current assignee: Yangzhou Research Institute Of Southeast University
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-03-09

Abstract

The invention discloses an intelligent safety protection device of a precise woodworking bench saw, which comprises a case, wherein a workbench is installed at the top of the case, a blade groove is formed in the center of the top of the workbench, a positioning plate is fixed in the case through a lifting assembly, a gear box is installed on the positioning plate, a first motor is installed on the input end of the gear box, a cutting blade is installed on the output end of the gear box, a protection assembly is installed on the output end of the gear box, grooves are formed in the top of the case and located on two sides of the blade groove, transparent protection plates are fixedly clamped on the grooves, a human body detector is fixed on the inner wall of one side of each groove through a sensor support, and a control plate is installed on one side of the bottom of the workbench. The invention has novel structure and ingenious conception, and ensures that the cutting blade is stopped in a tight and quick way under the combined action of the brake disc and the brake teeth, thereby ensuring the safety of a user and greatly improving the use safety.

Description

Intelligent safety protection device of precise woodworking bench saw

Technical Field

The invention relates to the technical field of woodworking machinery, in particular to an intelligent safety protection device of a precision woodworking bench saw.

Background

In 1906, in berlin, germany: mr. Oden, Wilhelmy, invented the first table saw in the world to accomplish their own furniture design, which made sawing timber quick and accurate. Since the push bench saw became rapidly widespread throughout the world, the first push bench saw in the world is now reserved and shown by the companies on the european union. The earliest push bench saws appeared in China were the German European Denton multi-push bench saws imported through trade companies in the last 70 th century, and from the first push bench saw in the world to the present full numerical control push bench saw, the push bench saw has gone over more than 100 years.

The main structure of the sliding table saw at present comprises a sliding table, a working table surface, a crosspiece ruler, a slide carriage seat, a main saw, a slot saw and the like, when in use, wood is placed on a movable working table and pushed to a rotating saw blade mechanism so as to realize cutting operation, because the wood is only provided with a positioning backup plate at the front side of the movable working table during cutting, the wood is easy to displace, so that the cutting precision is influenced, and the conditions of fracture, bumps and the like can also occur at the rearmost part of the wood during cutting, so that the cutting effect is very poor; on the other hand, the operator often directly pushes the wood board to cut by hands, and the blades of the sliding table saw are directly exposed outside, so that the hands of the operator are easily cut in the wood board cutting process, and safety accidents are caused. Therefore, it is necessary to design an intelligent safety protection device for a precision woodworking bench saw.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the intelligent safety protection device for the precision woodworking bench saw, which has the advantages of novel structure and ingenious conception, and ensures that the cutting blade is stopped in a tight and quick rotating manner under the combined action of the brake disc and the brake teeth, thereby ensuring the safety of a user and greatly improving the use safety.

In order to achieve the purpose, the invention provides the following technical scheme: an intelligent safety protection device of a precise woodworking bench saw comprises a case, wherein a workbench is installed at the top of the case, a blade groove is formed in the center of the top of the workbench, a positioning plate is fixed in the case through a lifting assembly, a gear box is installed on the positioning plate, a first motor is installed at the input end of the gear box, a cutting blade is installed at the output end of the gear box, a protection assembly is installed at the output end of the gear box, grooves are formed in the top of the case and located on the two sides of the blade groove, transparent protection plates are fixed on the grooves in a clamping mode, a human body detector is fixed on the inner wall of one side of each groove through a sensor support, a control plate is installed on one side of the bottom of the workbench, a PLC is installed in the control plate, and the human body detector is electrically connected with the input, the output end of the PLC controller is electrically connected with the first motor and the protection component.

Preferably, the protection component includes band-type brake, brake disc and brake tooth, the brake disc is installed to the one side that lies in cutting blade on the gear box, the band-type brake is installed to one side of brake disc, be provided with the brake tooth that uses with the brake disc cooperation on the cutting blade.

Preferably, the lifting assembly comprises a speed reducer, a screw rod, a second motor and an internal thread sliding block, the speed reducer is fixed at the center of the inner wall of the bottom of the case, the output end of the speed reducer is rotatably connected with the screw rod, the internal thread sliding block is connected to the screw rod in a meshed mode and fixed at two ends of the positioning plate, and the second motor is installed at the input end of the speed reducer.

Preferably, the inner wall of the bottom of the groove is fixedly provided with a blower through a blower frame, and the transparent protection plate is provided with a plurality of air outlet holes.

Preferably, the four corner positions of the bottom of the case are provided with movable wheels.

The invention has the beneficial effects that:

1. whether people are close to the periphery of the cutting blade is detected through the arranged human body detector, collected information is transmitted to the PLC, when the fact that the human body part is in contact is detected, the PLC controls the first motor to stop working, meanwhile, the band-type brake works, the brake disc is attached to the cutting blade, the cutting blade is enabled to rotate and stop rapidly under the combined action of the brake disc and the brake teeth, the safety of a user is guaranteed, and the use safety is greatly improved;

2. make the work of second motor through controlling the control panel to it is rotatory to drive the lead screw through the speed reducer, makes the internal thread slider be the up-and-down motion on the lead screw, drives the gear box motion then, finally drives cutting blade and carries out depth of cut regulation, and the convenience is cut convenient to use to the article of different grade type.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall plan structure of the present invention;

FIG. 2 is a schematic view of the overall cross-sectional plan structure of the present invention;

FIG. 3 is a schematic plan view of the shield assembly of the present invention;

FIG. 4 is a schematic cross-sectional plan view of a control panel according to the present invention;

reference numbers in the figures: 1. a chassis; 2. a moving wheel; 3. a work table; 4. a groove; 5. a transparent protection plate; 6. a human body detector; 7. a cutting blade; 8. a sensor holder; 9. a blower; 10. a fan frame; 11. a control panel; 12. an insert pocket; 13. a speed reducer; 14. a screw rod; 15. a second motor; 16. positioning a plate; 17. an internal thread slider; 18. a first motor; 19. a gear case; 20. a guard assembly; 21. contracting brake; 22. a brake disc; 23. a brake tooth; 24. a PLC controller.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings 1 to 4.

As shown in fig. 1 to 4, the present invention provides the following technical solutions: an intelligent safety protection device of a precision woodworking bench saw comprises a case 1, a workbench 3 is installed at the top of the case 1, a blade groove 12 is formed in the center of the top of the workbench 3, a positioning plate 16 is fixed inside the case 1 through a lifting assembly, a gear box 19 is installed on the positioning plate 16, a first motor 18 is installed on the input end of the gear box 19, a cutting blade 7 is installed on the output end of the gear box 19, a protection assembly 20 is installed on the output end of the gear box 19, grooves 4 are installed on two sides of the top of the case 1, which are located on the blade groove 12, transparent protection plates 5 are fixed on the grooves 4 in a clamping mode, a human body detector 6 is fixed on the inner wall of one side of each groove 4 through a sensor support 8, a control plate 11 is installed on one side of the bottom of the workbench 3, a PLC 24 is installed inside the control plate 11, first motor 18 of PLC controller 24's output electric connection and protection component 20, whether someone is close to around detecting cutting blade 7 through the human body detector 6 that sets up, and give PLC controller 24 with the information transfer who collects, when detecting the contact of human body position, the first motor 18 stop work of PLC controller 24 control, make band-type brake 21 work simultaneously, with brake disc 22 and cutting blade 7 laminating, under the combined action of brake disc 22 and brake tooth 23, make cutting blade 7 promptly stop soon, guarantee user's safety, the security of using promotes greatly.

The protection component 20 comprises a band-type brake 21, a brake disc 22 and brake teeth 23, the brake disc 22 is installed on one side, located on the cutting blade 7, of the gear box 19, the band-type brake 21 is installed on one side of the brake disc 22, and the brake teeth 23 matched with the brake disc 22 in use are arranged on the cutting blade 7.

Lifting unit includes speed reducer 13, lead screw 14, second motor 15 and internal thread slider 17, speed reducer 13 is fixed in quick-witted case 1's bottom inner wall center department, speed reducer 13's output rotates and is connected with lead screw 14, the meshing is connected with internal thread slider 17 on lead screw 14, internal thread slider 17 fixes the both ends at locating plate 16, install second motor 15 on speed reducer 13's the input, make second motor 15 work through controlling control panel 11, thereby it is rotatory to drive lead screw 14 through speed reducer 13, make internal thread slider 17 be the up-and-down motion on lead screw 14, then drive the motion of gear box 19, finally drive cutting blade 7 and carry out the depth of cut regulation, the convenience is cut the article of different grade type, high durability and convenient use.

The bottom inner wall of recess 4 is fixed with hair-dryer 9 through fan frame 10, has seted up a plurality of exhaust vent on the transparent guard plate 5, and through the work of the hair-dryer 9 that sets up, from the exhaust vent air-out, prevent that the cutting material from piling up on transparent guard plate 5, influence human detector 6 and detect the precision.

Four corner positions of the bottom of the case 1 are provided with movable wheels 2 which are convenient to move.

When the human body detector 6 is used, whether people approach the periphery of the cutting blade 7 is detected, collected information is transmitted to the PLC 24, when the human body part is detected to be contacted, the PLC 24 controls the first motor 18 to stop working, the band-type brake 21 works, the brake disc 22 is attached to the cutting blade 7, and the cutting blade 7 is emergently rotated and stopped under the combined action of the brake disc 22 and the brake teeth 23, so that the safety of a user is ensured, and the use safety is greatly improved.

Make the work of second motor 15 through controlling control panel 11 to it is rotatory to drive lead screw 14 through speed reducer 13, makes internal thread slider 17 be the up-and-down motion on lead screw 14, drives gear box 19 motion then, finally drives cutting blade 7 and carries out depth of cut and adjust, conveniently cuts convenient to use to the article of different grade type.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a precision carpenter bench saw intelligent safety protector, includes quick-witted case (1), its characterized in that: the top of machine case (1) is installed with workstation (3), the top center department of workstation (3) has seted up blade groove (12), the inside of machine case (1) is fixed with locating plate (16) through lifting unit, install gear box (19) on locating plate (16), install first motor (18) on the input of gear box (19), install cutting blade (7) on the output of gear box (19), install protection component (20) on the output of gear box (19), the top of machine case (1) is located the both sides of blade groove (12) and is installed recess (4), the joint is fixed with transparent guard plate (5) on recess (4), one side inner wall of recess (4) is fixed with human body detector (6) through sensor support (8), control panel (11) are installed to bottom one side of workstation (3), the interior of control panel (11) is installed PLC controller (24), the input of human body detector (6) electric connection PLC controller (24), the first motor of output electric connection (18) and protection component (20) of PLC controller (24).

2. The intelligent safety protection device for the precision woodworking bench saw machine as claimed in claim 1, wherein: protection subassembly (20) include band-type brake (21), brake disc (22) and brake tooth (23), brake disc (22) are installed to the one side that lies in cutting blade (7) on gear box (19), band-type brake (21) are installed to one side of brake disc (22), be provided with on cutting blade (7) with brake disc (22) cooperation brake tooth (23) of using.

3. The intelligent safety protection device for the precision woodworking bench saw machine as claimed in claim 1, wherein: the lifting assembly comprises a speed reducer (13), a screw rod (14), a second motor (15) and an internal thread sliding block (17), the speed reducer (13) is fixed at the center of the inner wall of the bottom of the case (1), the output end of the speed reducer (13) is rotatably connected with the screw rod (14), the internal thread sliding block (17) is connected to the screw rod (14) in a meshed mode, the internal thread sliding block (17) is fixed at two ends of a positioning plate (16), and the second motor (15) is installed at the input end of the speed reducer (13).

4. The intelligent safety protection device for the precision woodworking bench saw machine as claimed in claim 1, wherein: the bottom inner wall of recess (4) is fixed with hair-dryer (9) through fan frame (10), a plurality of exhaust vent has been seted up on transparent guard plate (5).

5. The intelligent safety protection device for the precision woodworking bench saw machine as claimed in claim 1, wherein: four corner positions at the bottom of the case (1) are provided with movable wheels (2).