Marble slabs is widely used building and ornament materials.The usual way of cutting marble sheet material has hand cut, water cutting semi auto cutting machine cutting and numerical control cutting machine cutting etc.; Wherein water cuts semi-automatic cutting and Numerical control cutting and uses the most extensive; Improved the cut efficient of marble slabs greatly with respect to hand cut; But this method only is the efficient that has improved cuts sheet material also, and the upper and lower material during cutting mainly still carries out through a dead lift.The a dead lift labor strength is big, and inefficiency is restricting the whole efficiency that sheet material cuts.
In order to overcome the problem of above-mentioned existence; The automatic blanking device that has occurred cutting back sheet material on the market; This automatic blanking device is that the sheet material with well cutting is transported on the turning rolls, and turning rolls is bounced back to both sides by air cylinder driven, and the support that sheet material loses roller falls on the discharging platform of below.This device has been realized the automatic blanking of cutting back sheet material, but owing to have frictional force between roller and the sheet material, at turning rolls when both sides bounce back; May drive sheet material slightly; Cause the sheet material inclined position, part sheet material still frame the problem of clamp occurs rolling on the road and can not freely falling.Therefore, the work that above-mentioned automatic blanking device can not be continual and steady needs constantly to handle the clamp fault by the workman, and is also not obvious to the raising of sheet material cutting efficiency.
Summary of the invention
The purpose of this invention is to provide a kind of doffer that is used for plate material, to solve the existing easy clamp of sheet cutting machine doffer, the problem of operational stability difference.
For realizing above-mentioned purpose, technical scheme of the present invention is: a kind of doffer that is used for plate material comprises frame; Be used to transmit the turning rolls of plate material, be used for the driving rolls frame to the open cylinder in both sides, and a pair of position-limited rack; Said cylinder symmetry is fixed on the both sides of frame, and said turning rolls is a pair of, is symmetrical set; Be separately fixed on the cylinder piston rod of frame both sides, in the installed inside of turning rolls some groups of rollers arranged, the dual-side of said plate material is placed on the roller; Said a pair of position-limited rack is the frame structure of being made up of some columns; Be fixedly mounted on the frame, be positioned at the inboard of a pair of turning rolls, the roller of installing on the turning rolls is between the position-limited rack column.
Further, the present invention also is equipped with several auxiliary pulleys at the upper level of turning rolls, and this auxiliary wheel and roller acting in conjunction are sent to the blanking seat in the plane with the plate material of well cutting and carry out the blanking operation.
The present invention also is equipped with line slideway on frame, the guide rail of said line slideway is fixed on the frame, and slide block is fixedly connected with turning rolls.This line slideway is in the cylinder action, and the shift motion of assist control turning rolls makes the motion of turning rolls more stable.
In order to guarantee to be suitable for the plate material of different specification size, the turning rolls of doffer of the present invention and position-limited rack width all are adjustable.Its concrete scheme is: the front end of cylinder piston rod is set to leading screw, and turning rolls is fixed on the leading screw place of cylinder piston rod through screw, and same, position-limited rack also is to be fixed on the frame through leading screw.Like this, through regulating the fixed screw on the leading screw, the width that just can adjust turning rolls and position-limited rack is to the plate material width that needs to produce.
The present invention's frame is provided with position sensor, and said position sensor is connected with the cylinder circuit, thereby passes through the motion of position sensor control cylinder piston rod, realizes automatic blanking.
Doffer of the present invention is owing to adopted the position-limited rack structure, and when turning rolls bounced back plate, position-limited rack can be controlled the position non-migration of sheet material, accomplishes blanking smoothly, the clamp phenomenon when effectively having avoided blanking.Doffer of the present invention is simple in structure, is easy to safeguard, can guarantee the plate efficiency that falls of stability and high efficiency, and the whole efficiency of sheet material cutting is improved.Position-limited rack and turning rolls adopt the screw mandrel syndeton, can the flexible distance, adapt to the sheet material of various sizes.
The specific embodiment
Like Fig. 1,2,3 said, a kind of doffer that is used for plate material comprises frame 1; The a pair of symmetrically arranged turning rolls 2 that is used to transmit plate material, and be used for the driving rolls frame to the open cylinder 3 in both sides, cylinder 3 symmetries are fixed on the both sides of frame 1; Turning rolls 2 screw thread respectively is fixedly mounted on the cylinder piston rod 31 of frame 1 both sides, in the installed inside of turning rolls 2 some groups of rollers 21 is arranged, and the upper level of turning rolls is equipped with several auxiliary pulleys 22; The dual-side of plate material is placed on the roller 21; Also include the position-limited rack 4 of a pair of frame structure of being made up of some columns, position-limited rack 4 is fixedly mounted on the frame 1 through leading screw, is positioned at the inboard of a pair of turning rolls 2; The roller of installing on the turning rolls 2 21 is between position-limited rack 4 columns; Guide rail 5 is fixed on the frame, and slide block 51 is connected with turning rolls 2, and position sensor 6 is installed on the frame 1.
During use; It is terminal that sheet material material doffer is installed in the cutting streamline; Sheet material material after the cutting starts cylinder after being transported to the position sensor assigned address through roller and auxiliary pulley, and cylinder piston rod drives turning rolls and moves to the frame direction, and roller and sheet material are owing to deflection to a certain degree can appear in the reason of frictional force in the moving process; But position-limited rack can effectively limit the skew of sheet material, guarantees the smooth blanking of sheet material material.