CN105128375B - Floating cutting device and cutting method thereof - Google Patents

Abstract

The present invention discloses a floating cutting device and a cutting method thereof. The device comprises a frame, a workbench mechanism, an upper knife frame and a lower knife frame fixed on the workbench mechanism, wherein the upper knife frame comprises an upper knife seat and an upper blade with one end tilted downward and fixed on the upper knife seat, and the lower knife frame comprises a lower knife seat and a lower blade horizontally fixed on the lower knife seat; the workbench mechanism comprises a workbench and a driving device and a limiting device connected below the workbench, wherein the two ends of the driving device are respectively connected to the front end surface of the workbench and the frame, and the two ends of the limiting device are respectively connected to the rear end surface of the workbench and the frame. The cutting device and the cutting method disclosed by the present invention can prolong the service life of the blade and improve the working efficiency.

Description

Floating cutting device and cutting method thereof

technical field

The invention relates to the field of rubber machinery and automation, in particular to a steel cord cutting device and cutting method for producing tires.

Background technique

In the automobile industry, radial tires are mostly used for tires. The carcass ply and belt layer of a radial tire are the main stress-bearing parts, which bear extremely complex forces such as periodic stretching, bending, and shearing, and are the stress-bearing skeleton layers of the tire. The strength and elasticity of the carcass cord and belt cord can withstand complex stress and strain when the tire is in use, and ease the vibration and impact of the external road surface. Its performance determines the quality and performance of the tire.

The tire manufacturing company uses a steel cord cutting machine to cut the steel cord into rectangular steel cord strips according to the width requirements set by the process, and then automatically splices the cut steel cord strips in sequence, and then glues the steel cord with film, wraps the film, and finally It is wound into a certain required reel for the forming machine.

At present, the current steel cord cutting machine mainly has the following shortcomings:

1. The shear force is large, resulting in large power, huge equipment and waste of energy;

2. The noise is loud, which affects the health of employees;

3. The knives collide with each other and the life is short, resulting in increased costs and affecting work efficiency;

4. The gap between the upper and lower blades varies greatly, which is prone to continuous cutting, which affects product quality and efficiency.

Contents of the invention

In order to solve the above technical problems, the present invention provides a floating cutting device and a cutting method to achieve the purpose of prolonging the service life of the blade and increasing the cutting efficiency.

To achieve the above object, the technical scheme of the present invention is as follows:

A floating cutting device, including a frame, a workbench mechanism, an upper knife rest and a lower knife rest fixed on the workbench mechanism, the upper knife rest includes an upper knife rest and one end is tilted downward and fixed on the upper knife rest The upper blade, the lower tool rest includes the lower knife seat and the lower blade horizontally fixed on the lower knife seat; The two ends of the device are respectively connected with the front end surface of the workbench and the frame, and the two ends of the limiting device are respectively connected with the rear end surface of the workbench and the frame.

The driving device can drive the worktable to float back and forth in the horizontal direction, and the limit device can control the limit position of the forward movement of the worktable, so as to ensure that the upper blade and the lower blade are always in contact during the cutting process, ensuring zero gap, thereby avoiding cutting constant situation.

Preferably, both ends of the blade of the upper blade have a slope that makes a gap between the upper blade and the lower blade, and at the same time, the upper blade is placed obliquely, so that the upper and lower blades can gradually enter the contact state from the separated state during cutting, avoiding It prevents hard contact from damaging the blade and reduces the noise during cutting action.

Preferably, the driving device is a cylinder, the two ends of the cylinder are respectively fixedly connected with the front end surface of the workbench and the frame, and the cylinder is connected with the pressure relief valve; the cylinder can move the workbench forward and push the lower blade It is always in contact with the upper blade, and the cylinder pressure is adjusted through the pressure reducing valve to ensure that the interaction force between the upper and lower blades is minimized while achieving zero clearance. The driving device can also be other flexible driving devices such as hydraulic cylinders and springs.

Preferably, the limiting device is a positioning screw, the two ends of the positioning screw are respectively connected to the rear end surface of the workbench and the frame, and the positioning screw can control the distance of the workbench moving forward.

In a further technical solution, guide rails are arranged horizontally on the frame, and the workbench is located on the guide rails and can slide on the guide rails.

In a further technical solution, both the upper blade and the lower blade have four-sided blades, and both ends of the four-sided blades of the upper blade have bevels, and the four-sided blades can be used in rotation to improve the service life of the blades.

In the above solution, the cutting device further includes a power device, a transmission device, a pressing device, a feeding device and a discharging device.

Preferably, the cylinders and positioning screws include 5 groups, or multiple groups, which are evenly distributed under the workbench, so that the workbench is evenly stressed and floats smoothly.

The invention also provides a cutting method of a floating cutting device, including feeding; the upper blade falls, and the lower blade is separated from one end and enters the overall contact state to cut the material. At the same time, the cylinder pushes the workbench to drive down The blade moves forward so that it is always in contact with the upper blade during cutting, and the positioning screw restricts the extreme position of the forward movement of the worktable; the cutting is completed and the material is discharged.

Through the above technical solution, the floating cutting device provided by the present invention can realize the zero-gap contact between the upper and lower blades through the floating of the workbench, which ensures the cutting effect and product quality, and the adjustment of the blade gap is convenient and saves time; at the same time, the upper and lower blades avoid hard collisions , The life of the blade is extended, the maintenance time is reduced, and the work efficiency is improved; and the noise and energy consumption are also reduced accordingly.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings that are required in the description of the embodiments or the prior art.

Fig. 1 is a side view of a floating cutting device disclosed in an embodiment of the present invention;

Figure 2 is an enlarged schematic view of part A in Figure 1;

Fig. 3 is a schematic front view of the rack disclosed by the embodiment of the present invention;

Fig. 4 is B-B sectional schematic diagram among Fig. 3;

Fig. 5 is a schematic diagram of the structure of the upper blade disclosed in the embodiment of the present invention;

FIG. 6 is an enlarged schematic diagram of part C in FIG. 5 .

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

The present invention provides a floating cutting device, the structure shown in Figure 1, the cutting device has a high degree of automation, simple structure, convenient operation, and can effectively improve work efficiency and product quality.

The floating cutting device shown in Figure 1 and Figure 2 includes a frame 1, a workbench mechanism 2, an upper knife rest 3 and a lower knife rest 4 fixed on the workbench mechanism 2, and the upper knife rest 3 includes an upper knife rest 31 and the upper blade 32 fixed on the upper knife seat 31 with one end inclined downward, the lower knife rest 4 includes the lower knife seat 41 and the lower blade 42 horizontally fixed on the lower knife seat 41; from Fig. 2, it can be seen that the upper The blade 32 is obliquely fixed so that it is on the upper knife seat 31, and a section of the lower bottom surface 34 exposed by the upper blade 32 can be seen among the figures; 35 can be used alternately, and the four sides blade 35 two ends of upper blade 32 all have the inclined-plane 33 that makes gap exist between upper blade 32 and lower blade 42, and lower blade 42 does not have inclined-plane 33, and all the other structures are identical with upper blade 32 structures.

With reference to Fig. 3 and Fig. 4, workbench mechanism 2 comprises workbench 21 and is connected to cylinder 22 and positioning screw 23 below workbench 21, and the output end of cylinder 22 is connected with the front end face of workbench 21, and the other end of cylinder 22 is connected with The frame 1 is fixedly connected, the cylinder 22 is connected with the pressure reducing valve (not shown in the figure); The cylinder 22 can move the workbench 21 forward, push the lower blade 42 and the upper blade 32 to be in contact all the time, and adjust the pressure of the cylinder 22 through the pressure reducing valve to ensure that the interaction force between the upper and lower blades is minimized while realizing zero clearance. The positioning screw 23 can control the distance that the workbench 21 moves forward.

As shown in FIG. 3 , guide rails 11 are horizontally arranged on the frame 1 , and the workbench 21 is located on the guide rails 11 and can slide forward and backward on the guide rails 11 . Cylinders 22 and positioning screws 23 include five groups, which are evenly distributed under the workbench 21, so that the workbench 21 is evenly stressed and floats smoothly.

Referring to FIG. 1 , the cutting device of the present invention also includes a power unit 8 , a transmission unit 5 , a pressing unit 6 , a feeding unit 7 and a discharging unit (not shown in the figure). The power device is located inside the frame 1, which drives the reducer for the motor; the transmission device 5 is the crank structure shown in the figure, the motor transmits power to the crank structure, and the crank structure converts circular motion into up and down motion, driving the upper tool holder to move up and down, Carry out the cutting action; the pressing device 6 presses the steel cord to be cut to facilitate cutting; the feeding device 7 can guide the steel cord and transport it to the workbench 21; the discharge device will cut the strip cord output.

The invention also discloses the cutting method of the floating cutting device, including feeding; the upper blade falls, and the lower blade is separated from one end and enters the overall contact state to cut the material; at the same time, the cylinder pushes the workbench to drive the lower blade Move forward so that it is always in contact with the upper blade during cutting, and the positioning screw restricts the extreme position of the forward movement of the worktable; the cutting is completed and the material is discharged.

The cylinder of this device can drive the worktable to float back and forth in the horizontal direction, and the positioning screw can control the limit position of the forward movement of the worktable, which can ensure that the upper blade and the lower blade are always in contact during the cutting process, ensuring zero gap, thereby avoiding The situation of continuous cutting; the upper blade is placed obliquely, and the two ends of the blade of the upper blade have slopes, so that the upper and lower blades can gradually enter the contact state from the separated state during cutting, avoiding hard contact and damaging the blade, and reducing the cutting time. noise.

The floating cutting device and cutting method provided by the present invention can realize the zero-gap contact between the upper and lower blades through the floating of the workbench, ensuring the cutting effect and product quality, and the blade gap is convenient to adjust, saving time; at the same time, the upper and lower blades avoid hard collisions, and the blades The service life is extended, the maintenance time is reduced, and the work efficiency is improved; moreover, the noise and energy consumption are also reduced accordingly.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. A floating cutting device, comprising a frame, a workbench mechanism, an upper knife rest and a lower knife rest fixed on the workbench mechanism, the upper knife rest includes an upper knife rest and one end is inclined downward and fixed on the upper knife The upper blade on the seat, the lower knife rest includes the lower knife seat and the lower blade horizontally fixed on the lower knife seat; it is characterized in that the workbench mechanism includes a workbench and a driving device and a limiter connected to the lower part of the workbench. position device, the two ends of the driving device are respectively connected with the front end surface of the workbench and the frame, and the two ends of the limit device are respectively connected with the rear end surface of the workbench and the frame; the two ends of the edge of the upper blade Both have an inclined surface that makes a gap between the upper blade and the lower blade; the driving device drives the workbench to float back and forth in the horizontal direction; The frame is fixedly connected, and the cylinder is connected with the pressure reducing valve; the limiting device controls the limit position of the forward movement of the worktable; the limiting device is a positioning screw, and the two ends of the positioning screw are respectively connected to the rear end surface of the working table Connect to the rack. 2 . The floating cutting device according to claim 1 , wherein guide rails are arranged horizontally on the frame, and the workbench is located on the guide rails. 3 . 3 . The floating cutting device according to claim 1 , wherein both the upper blade and the lower blade have four-sided cutting edges, and both ends of the four-sided cutting edges of the upper blade have inclined surfaces. 4 . 4. The floating cutting device according to any one of claims 1-3, characterized in that the cutting device further comprises a power device, a transmission device, a pressing device, a feeding device and a discharging device. 5 . The floating cutting device according to claim 1 , wherein the cylinders and positioning screws comprise five groups, which are evenly distributed under the workbench. 6 . 6. The cutting method of the floating cutting device according to any one of claims 1-5, characterized in that it includes feeding; the upper blade falls, and the lower blade is separated from one end and enters the overall contact state, and the material is cut. At the same time, the cylinder pushes the table to drive the lower blade to move forward, so that it is always in contact with the upper blade during cutting, and the positioning screw restricts the limit position of the table's forward movement; the cutting is completed and the material is discharged.