CN212042944U

CN212042944U - Lifting control system of band sawing machine

Info

Publication number: CN212042944U
Application number: CN201922394338.0U
Authority: CN
Inventors: 周鹏飞; 洪亮
Original assignee: Zhejiang Sinaida Machine Tools Co ltd
Current assignee: Zhejiang Sinaida Machine Tools Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-12-01
Anticipated expiration: 2029-12-26

Abstract

The utility model provides a lifting control system of band sawing machine belongs to band sawing machine technical field. The feeding speed that it had solved current band sawing machine needs real-time control to saw cut, and the precision requirement to the crossbeam decline is higher, when the cutting was accomplished, needs quick lifting crossbeam to make its normal position scheduling problem. The utility model discloses a lead screw elevating gear includes servo motor, motor cabinet, ball screw and lead screw axle bed, and the motor cabinet is fixed to be set up on the stand, and ball screw and crossbeam are connected, and servo motor drives the crossbeam through driving ball screw rotation and goes up and down; the oil cylinder lifting device comprises a hydraulic oil cylinder, the lower end of the hydraulic oil cylinder is fixedly arranged on the worktable of the band sawing machine, and a piston rod of the hydraulic oil cylinder extends upwards and is fixedly connected with the cross beam. The utility model has the advantages of saw cut through accurate, the stability of lead screw elevating gear drive crossbeam, hydro-cylinder elevating gear drive crossbeam rises fast, and the mode that both combined together has improved the precision of saw cutting, has strengthened the stability that the crossbeam goes up and down.

Description

Lifting control system of band sawing machine

Technical Field

The utility model belongs to the technical field of band sawing machine, a lift control system of band sawing machine is related to.

Background

The band sawing machine is one kind of sawing machine, and has circular saw blade stretched over two saw wheels and driven by the saw wheels to cut various kinds of metal and non-metal material. The traditional band sawing machine comprises a machine body, and a beam, a saw blade, a saw wheel, a saw blade tensioning mechanism, a main transmission device, a hydraulic system, an electrical control system and the like which are arranged on the machine body, wherein the saw blade tensioning mechanism adjusts the tightness of the saw blade, and the hydraulic system drives the beam to feed and saw. Due to the diversity of the shapes and sizes of the raw materials, the feeding speed of sawing needs to be controlled in real time, the requirement on the descending precision of the beam is high, and when the cutting is completed, the beam needs to be quickly lifted to be restored.

The traditional lifting beam mainly has two modes, namely, firstly, a ball screw is driven by a servo motor, and a screw nut is connected with the beam to lift; and secondly, a piston rod of the hydraulic oil cylinder is connected with a beam to lift. The precision of the rigid connection of the ball screw and the closed loop control of the servo is very high, and a hydraulic servo medium (hydraulic oil) is soft, so that the precision of the ball screw is higher than that of an oil cylinder, but the speed of the hydraulic oil cylinder driving a piston rod to move is higher than that of the ball screw. A hydraulic control system for effectively combining the lifting mode and the sawing motion of the two devices is lacked.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hydraulic control system that combines together hydraulic cylinder mode and ball screw mode to the above-mentioned problem that the hydraulic system of band sawing machine exists.

The purpose of the utility model can be realized by the following technical proposal:

a lifting control system of a band sawing machine comprises a screw rod lifting device and an oil cylinder lifting device, wherein the screw rod lifting device and the oil cylinder lifting device are respectively arranged on a stand column of the band sawing machine to drive a cross beam to lift; the oil cylinder lifting device comprises a hydraulic oil cylinder, the lower end of the hydraulic oil cylinder is fixedly arranged on the worktable of the band sawing machine, and a piston rod of the hydraulic oil cylinder extends upwards and is fixedly connected with the cross beam.

In the above-mentioned lift control system of band sawing machine, the head of ball screw is equipped with the stiff end, and the afterbody of ball screw is equipped with the support end, stiff end and motor cabinet fixed connection, the support end fixed setting on the stand, ball screw rotates with above-mentioned stiff end, support end respectively and is connected.

In the above lifting control system for the band sawing machine, the head of the ball screw extends upwards to be provided with the coupler, and the ball screw is connected with the servo motor through the coupler.

In the above lifting control system for the band sawing machine, the ball screw is provided with the screw nut, and the screw nut is fixedly connected with the cross beam. The ball screw rotates to drive the screw nut to lift, so that the cross beam is driven to lift.

In the above lifting control system for a band sawing machine, the motor base is of a frame structure, the upper end face of the motor base is connected with the servo motor, the lower end face of the motor base is fixedly connected with the fixed end, and the end face of the inner side of the motor base is fixedly arranged on the stand column.

In the above lifting control system for a band sawing machine, the screw lifting device is further provided with an electromagnetic clutch connected with a servo motor. The electromagnetic clutch is powered on, the servo motor drives the screw rod to rotate, so that the cross beam is driven to stably descend, otherwise, the servo motor is powered off, and the cross beam is driven to rapidly ascend through the oil cylinder lifting device in an idle running mode.

In the above lifting control system for the band sawing machine, the two sets of screw rod lifting devices are arranged on the workbench in a bilateral symmetry manner. The lead screw lifting devices symmetrically arranged on the left and right sides enable the stress of the beam to be more stable and balanced.

In the lifting control system of the band sawing machine, the upright posts of the oil cylinder lifting device are also provided with two groups of linear guide rails, and each group of the guide rails is provided with three slide blocks fixedly connected with the cross beam. The lifting stability and guidance of the beam are improved through the linearity of the linear guide rail.

In the above lifting control system for the band sawing machine, the reinforcing ribs are fixedly welded on the bottom mounting surface of the upright post. The strength and stability of the upright post are improved.

Compared with the prior art, through accurate, the stable saw cutting of lead screw elevating gear drive crossbeam, hydro-cylinder elevating gear drive crossbeam rises fast, and the mode that both combine together has improved the precision of saw cutting, has strengthened the stability of crossbeam lift, has more steadily prolonged the life of saw band when making the saw band saw cut.

Drawings

Fig. 1 is a schematic diagram of the cylinder lifting device and the screw lifting device of the present invention;

fig. 2 is a schematic diagram of the overall structure of the present invention;

in the figure, 1, a servo motor; 2. a motor base; 3. a ball screw; 4. a feed screw nut; 5. a coupling; 6. a cross beam; 7. an oil cylinder; 8, a guide rail; 9. a slider; 10. a column; 11. a fixed end; 12. a support end; 13. lead screw elevating gear.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, a lifting control system of a band sawing machine comprises a screw lifting device 13 and an oil cylinder lifting device, which are respectively arranged on a vertical column 10 of the band sawing machine to drive a beam 6 to lift, and is characterized in that the screw lifting device 13 comprises a servo motor 1, a motor base 2, a ball screw 3 and a screw shaft base, the motor base 2 is fixedly arranged on the vertical column 10, the ball screw 3 is connected with the beam 6, and the servo motor 1 drives the beam 6 to lift by driving the ball screw 3 to rotate; the oil cylinder lifting device comprises a hydraulic oil cylinder 7, the lower end of the hydraulic oil cylinder 7 is fixedly arranged on a worktable of the band sawing machine, and a piston rod of the hydraulic oil cylinder 7 extends upwards to be fixedly connected with the cross beam 6.

The head of ball screw 3 is equipped with stiff end 11, and the afterbody of ball screw 3 is equipped with supports end 12,

stiff end

11 and 2 fixed connection of motor cabinet, support end 12 fixed setting on stand 10, ball screw 3 rotates with above-mentioned stiff end 11, support end 12 respectively and is connected, ball screw 3's head upwards stretches out and is equipped with shaft coupling 5, and ball screw 3 passes through shaft coupling 5 and is connected with servo motor 1, is equipped with screw-nut 4 on the ball screw 3, screw-nut 4 and 6 fixed connection of crossbeam. The ball screw 3 rotates to drive the screw nut 4 to lift, thereby driving the beam 6 to lift.

The motor base 2 is of a frame structure, the upper end face of the motor base 2 is connected with the servo motor 1, the fixed end 11 is fixedly connected to the lower end face of the motor base, and the end face of the inner side of the motor base 2 is fixedly arranged on the stand column 10. The screw rod lifting device 13 is also provided with an electromagnetic clutch connected with the servo motor 1. When the electromagnetic clutch is powered on, the servo motor 1 drives the screw rod to rotate, so that the cross beam 6 is driven to stably descend, otherwise, when the power is off, the servo motor 1 idles, and the cross beam 6 is driven to rapidly ascend through the oil cylinder lifting device. The screw rod lifting devices 13 are arranged in two groups, and the two groups of screw rod lifting devices 13 are arranged on the workbench in a bilateral symmetry mode. The lead screw lifting devices 13 which are symmetrically arranged left and right enable the stress of the descending of the cross beam 6 to be more stable and balanced.

The upright post 10 of the oil cylinder lifting device is also provided with two groups of linear guide rails 8, and each group of the guide rails 8 is provided with three slide blocks 9 fixedly connected with the cross beam 6. The lifting stability and guidance of the beam 6 are improved through the linearity of the linear guide rail 8. And reinforcing ribs are fixedly welded on the bottom mounting surface of the upright post 10. Increasing the strength and stability of the column 10.

After a workpiece to be cut is clamped, the servo motor 1 controls the ball screw 3 to rotate, so that the screw nut 4 and the beam 6 fixedly connected with the screw nut are driven to descend, meanwhile, hydraulic oil in the hydraulic oil cylinder 7 is discharged into an external oil pump, the electromagnetic clutch is in a power-on state at the moment, due to the diversity of shapes and sizes of the workpiece to be cut, the system can analyze and process various feedback data, and the saw cutting feed speed of the beam 6 is controlled by controlling the rotating speed of the servo motor 1, so that stable and accurate cutting is realized; after cutting, the electromagnetic clutch is powered off, hydraulic oil is pressed into the hydraulic oil cylinder 7 by gas in the oil pump, and the cross beam 6 is pushed to rise rapidly through the piston rod. Thereby realize accurate, the stable cutting of lead screw elevating gear 13 control crossbeam 6, hydro-cylinder elevating gear control crossbeam 6 rises fast, the control mode that both combine together.

It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended manner, i.e. in a manner equivalent to "including at least … …", and not in a closed manner, i.e. in a manner not to be interpreted as "including … … only".

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A lifting control system of a band sawing machine comprises a screw rod lifting device (13) and an oil cylinder lifting device, wherein the screw rod lifting device and the oil cylinder lifting device are respectively arranged on a stand column (10) of the band sawing machine to drive a cross beam (6) to lift, and the lifting control system is characterized in that the screw rod lifting device (13) comprises a servo motor (1), a motor base (2), a ball screw rod (3) and a screw rod shaft base, the motor base (2) is fixedly arranged on the stand column (10), the ball screw rod (3) is connected with the cross beam (6), and the servo motor (1) drives the ball screw rod (3) to rotate to drive the cross beam (6) to lift; the oil cylinder lifting device comprises a hydraulic oil cylinder (7), the lower end of the hydraulic oil cylinder (7) is fixedly arranged on the worktable of the band sawing machine, and a piston rod of the hydraulic oil cylinder (7) extends upwards to be fixedly connected with the cross beam (6).

2. The lifting control system of a band sawing machine according to claim 1, characterized in that the head of the ball screw (3) is provided with a fixed end (11), the tail of the ball screw (3) is provided with a supporting end (12), the fixed end (11) is fixedly connected with the motor base (2), the supporting end (12) is fixedly arranged on the upright post (10), and the ball screw (3) is respectively rotatably connected with the fixed end (11) and the supporting end (12).

3. The lifting control system of a band sawing machine according to claim 2, characterized in that the ball screw (3) has a coupling (5) extending upward from the head thereof, the ball screw (3) is connected to the servo motor (1) through the coupling (5), the ball screw (3) is provided with a screw nut (4), and the screw nut (4) is fixedly connected to the beam (6).

4. The lifting control system of a band sawing machine according to claim 2, characterized in that the motor base (2) is a frame structure, the upper end face of the motor base (2) is connected with the servo motor (1), the lower end face of the motor base is fixedly connected with the fixed end (11), and the inner end face of the motor base (2) is fixedly arranged on the upright post (10).

5. The lifting control system of a band saw machine according to claim 1, characterized in that the screw lifting device (13) is further provided with an electromagnetic clutch connected with the servo motor (1).

6. The lifting control system of a band sawing machine according to claim 1, characterized in that there are two sets of lead screw lifting devices (13), and the two sets of lead screw lifting devices (13) are arranged on the worktable in bilateral symmetry.

7. The lifting control system of a band sawing machine according to claim 1, characterized in that the upright post (10) of the cylinder lifting device is further provided with two groups of linear guide rails (8), and each group of guide rails (8) is provided with three sliding blocks (9) fixedly connected with the cross beam (6).