CN1044983C - Method and device for cutting stainless steel fiber bundles - Google Patents

Abstract

The invention relates to a fixed-length cutting method and device for stainless steel fiber bundles. It is suitable for the production of stainless steel fiber felt and various stainless steel non-woven fabrics. The feature of the present invention is that the stainless steel fiber bundle is cut off by cutting the stainless steel fiber bundle under the stretched state, and the present invention greatly weakens the compaction effect of the cutting knife on the stainless steel fiber bundle, and solves the problem of fixed-length cutting. The fracture of the stainless steel fiber bundle is even and there is no technical problem of adhesion, and the output of the short stainless steel fiber is also improved.

Description

Method and device for cutting stainless steel fiber bundles

The invention relates to a fixed-length cutting method and device for stainless steel fiber bundles, which are suitable for the production fields of stainless steel fiber felt and various stainless steel non-woven fabrics.

Stainless steel fiber felt is a new type of filter material widely used in petroleum, chemical industry, metallurgy, chemical fiber, aviation and other fields. In the production process, the raw material of stainless steel fiber bundles needs to be cut into short fibers of a certain length, and the cutting quality and output of stainless steel fiber bundles directly affect the production quality and output of stainless steel fiber felt products. However, it is very difficult to cut stainless steel fiber bundles at a fixed length, and avoiding the fracture adhesion problem when cutting stainless steel fiber bundles is the key in the cutting technology. The cut-off methods of fixed-length fiber bundles used in the chemical fiber textile industry mainly include methods such as chopping, pressing and shearing. The chopping method is currently cutting the stainless steel fiber bundles, and the fracture adhesion when the stainless steel fiber bundles are cut cannot be avoided with the pressure cutting and shearing methods. No relevant information was found in domestic and foreign literature searches. VD542 fiber cutting machine is a cutting device widely used in the textile industry to cut chemical fibers into a certain length. The device includes:

Motor, the motor is a DC motor, and the output shaft end of the motor is fixedly equipped with a sprocket _Z1 ;

Transmission mechanism, the transmission mechanism consists of sprocket Z ₁ → chain → sprocket Z ₂ → gear Z ₃ → gear Z=50 → a pair of gears Z ₄ → gear Z ₁₀ → sprocket Z ₉ → chain → sprocket Z ₈ →rubber roller→metal roller and sprocket Z ₁ →chain→sprocket Z ₂ →gear Z ₃ →gear Z=50→a pair of gears Z ₄ →feeding sheave and sprocket Z ₁ →chain→sprocket Z ₂ →Gear Z ₅ →Gear Z=66→Gear Z ₆ →A pair of bevel gears Z ₇ →The cutter head assembly consists of three parts;

Traction mechanism, the traction mechanism is composed of a rubber roller coated with rubber on the outside driven by the sprocket Z ₈ and a metal roller driven by the rubber roller;

a hopper, the hopper is located directly above the common vertical tangent of the oscillating sheave and the fixed sheave;

Feed sheave, the connected feed sheave consists of a fixed sheave fixed on the _4th axis of the gear Z and a fixed sheave fixed on the oscillating sheave shaft connected with the Oldham coupling to crimp the tooth top of the fixed sheave The oscillating sheave is composed of;

A sheave pressing mechanism, the sheave pressing mechanism is arranged on the bearing seat of the swing sheave shaft that makes the stainless steel fiber bundles pressed against the fixed sheave;

The cutter head assembly, the cutter head assembly is fixed on the cutter head shaft, the cutter head assembly consists of a cutter head base with a knife groove, two pairs of grooved tooth tops clamping stainless steel fiber bundles sandwiched between the adjustment plates The cut-off knife for cutting stainless steel fiber bundles in the gap cutting area, the rubber pad outside the outer adjustment plate, and the cutter head cover plate pressed on the rubber pad. But this device can not cut stainless steel fiber bundle.

The object of the present invention is to address above-mentioned existing problems, propose a kind of method of cutting off the stainless steel fiber bundle and the device that realizes this method when avoiding the fracture adhesion when cutting off the rusty steel fiber bundle and improving the output of short stainless steel fiber.

A stainless steel fiber bundle cutting method is characterized in that the stainless steel fiber bundle is cut off by cutting the stainless steel fiber bundle with a cutting knife in a tensioned state, and the specific method is as follows:

a. Send the stainless steel fiber bundles to be cut into the rotating traction mechanism. The stainless steel fiber bundles are pressed against the metal roller by the weight of the rubber roller of the traction mechanism. The stainless steel fiber bundles pass through the hopper and the wire guide plate at the bottom of the hopper , so that it enters the feeding sheave composed of a fixed sheave and a swing sheave, and the stainless steel fiber bundle is tensioned by traction,

b When the stainless steel fiber bundle enters the feeding sheave and is clamped by two pairs of tooth tops of the sheave, the rotating cutterhead assembly cuts the stainless steel fiber bundle quickly with a cutting knife. The cutter head assembly cuts the stainless steel fiber bundle once with a cutting knife to realize continuous cutting of the stainless steel fiber bundle. When cutting the stainless steel fiber bundle, the cutting speed V _G at any point on the cutting edge is between the cutting speed V _Q perpendicular to the cutting speed. The ratio satisfies V _G /V _Q ≥ 2.

Realize the stainless steel fiber bundle cutting device of the method described in claim 1, comprising:

Motor, the motor is a DC motor, and the output shaft end of the motor is fixedly equipped with a sprocket _Z1 ;

Transmission mechanism, the transmission mechanism consists of sprocket Z ₁ → chain → sprocket Z ₂ → gear Z ₃ → gear Z=50 → a pair of gears Z ₄ → gear Z ₁₀ → sprocket Z ₉ → chain → sprocket Z ₈ →rubber roller→metal roller and sprocket Z ₁ →chain→sprocket Z ₂ →gear Z ₃ →gear Z=50→a pair of gears Z ₄ →feeding sheave and sprocket Z ₁ →chain→sprocket Z ₂ →Gear Z ₅ →Gear Z=66→Gear Z ₈ →A pair of bevel gears Z ₇ →The cutter head assembly consists of three parts;

Traction mechanism, the traction mechanism is composed of a rubber roller coated with rubber on the outside driven by the sprocket Z ₈ and a metal roller driven by the rubber roller;

a hopper, the hopper is located directly above the common vertical tangent of the oscillating sheave and the fixed sheave;

Feeding sheave, said feeding sheave consists of a fixed sheave fixed on the _4th axis of the gear Z and a fixed sheave fixed on the shaft of the swinging sheave connected to the Oldham coupling, which is crimped with the top of the fixed sheave The oscillating sheave is composed of;

A sheave pressing mechanism, the sheave pressing mechanism is arranged on the bearing seat of the swing sheave shaft that makes the stainless steel fiber bundles pressed against the fixed sheave;

The cutter head assembly, the cutter head assembly is fixed on the cutter head shaft, the cutter head assembly consists of a cutter head base with a knife groove, two pairs of grooved tooth tops clamping stainless steel fiber bundles sandwiched between the adjustment plates The cut-off knife for cutting stainless steel fiber bundles in the gap cutting area, the rubber pad outside the outer adjustment plate, and the cutter head cover plate pressed on the rubber pad;

It is characterized by:

a. At the bottom of the hopper, there is a trapezoidal cross-section guide plate with a round hole in the middle to limit the clamping position of the stainless steel fiber bundle between the feeding sheaves,

b The base of the cutter head fixed on the shaft of the cutter head is provided with 4 knife grooves with a width of 55 mm and a depth of 5 mm, which are evenly distributed around the circumference. The cutting knife is inclined to the front end at an angle of 3° to adjust the plate,

c. Cutting off the blade with a rising angle of 65°, a rake angle of 0°, a normal rear angle of 25°, a cutter body width of 55mm, and a cutter body thickness of 3mm.

Due to the adoption of the above technical scheme, the present invention greatly weakens the compacting effect of the cutting knife on the stainless steel fiber bundle, and the friction direction between the side of the cutting knife and the fracture of the broken stainless steel fiber bundle is not consistent with the compaction direction, but is biased toward cutting direction, thereby solving the technical problem of cutting stainless steel fiber bundles at fixed lengths with even fractures and no adhesion, and at the same time improving the output of short stainless steel fibers.

Fig. 1 is a schematic diagram of the principle of the present invention.

Fig. 2 is a schematic diagram of the transmission mechanism of the cutting device of the present invention.

Fig. 3 is a schematic diagram of the cutting device of the present invention.

Fig. 4 is the A-A view of Fig. 3 .

Fig. 5 is a structural diagram of the cutter head assembly.

Fig. 6 is a B-B view of Fig. 5 .

Fig. 7 is a diagram of a cutting knife.

Fig. 8 is a C-C view of Fig. 7 .

Fig. 9 is a schematic cross-sectional view of the adjustment plate.

Fig. 10 is a schematic cross-sectional view of the wire guide plate.

The present invention will be further described below in conjunction with the accompanying drawings.

A method for cutting stainless steel fiber bundles, which is characterized in that the stainless steel fiber bundles 2 are cut off by cutting the stainless steel fiber bundles 2 in a tensioned state. The specific method is as follows: a. Send the stainless steel fiber bundles to be cut into The rotating traction mechanism, the stainless steel fiber bundles are pressed against the metal roller 6 by the weight of the rubber roller 7 of the traction mechanism, the stainless steel fiber bundles pass through the hopper 8 and the guide wire plate 9 arranged at the bottom of the hopper, so that they enter the fixed groove The feeding sheave formed by wheel 5 and oscillating sheave 4, the stainless steel fiber bundle is tensioned under traction. b When the stainless steel fiber bundle enters the feeding sheave and is clamped by two pairs of sheave tooth tops, the gap between the two pairs of sheave teeth holding the stainless steel fiber bundle is called the cutting area, and the cutter head assembly that rotates at this moment 3 Use the cutting knife 1 to quickly cut the stainless steel fiber bundle. Every time the feeding sheave rotates a tooth, the rotating cutter head assembly cuts the stainless steel fiber bundle once with the cutting knife, so as to realize continuous cutting of the stainless steel fiber bundle and cut off any point on the cutting edge. The ratio of the cutting speed V _G to the cutting speed V _Q perpendicular to the cutting speed satisfies V _G /V _Q ≥ 2.

The stainless steel fiber bundle cutting device realizing the method of claim 1 is an improvement on the basis of the original chopping equipment VD524 fiber bundle cutting machine.

Stainless steel fiber bundle cutting unit, including:

Motor, the motor is a DC motor, and the output shaft end of the motor is fixedly equipped with a sprocket _Z1 ;

Transmission mechanism, the transmission mechanism consists of sprocket Z ₁ → chain → sprocket Z ₂ → gear Z ₃ → gear Z=50 → a pair of gears Z ₄ → gear Z ₁₀ → sprocket Z ₉ → chain → sprocket Z ₈ →rubber roller→metal roller and sprocket _Z1 →chain→sprocket _Z2 →gear _Z3 →gear _Z5 =0→a pair of gears _Z4 →feed sheave and sprocket _Z1 →chain→sprocket Z ₂ →Gear Z ₅ →Gear Z=66→Gear Z ₆ →A pair of bevel gears Z ₇ →The cutter head assembly consists of three parts;

Traction mechanism, the traction mechanism is composed of a rubber roller coated with rubber on the outside driven by the sprocket Z ₈ and a metal roller driven by the rubber roller;

Hopper 8, the hopper is located directly above the common vertical tangent of the swing sheave and the fixed sheave;

Feeding sheave, the speed of feeding sheave consists of a fixed sheave fixed on the _4th axis of the gear Z and a fixed sheave fixed on the shaft of the swinging sheave connected with the Oldham coupling to crimp the tooth top of the fixed sheave The oscillating sheave is composed of;

A sheave pressing mechanism, the sheave pressing mechanism is arranged on the bearing seat of the swing sheave shaft that makes the stainless steel fiber bundles pressed against the fixed sheave;

The cutter head assembly 3, said cutter head assembly is fixed on the cutter head shaft 11, the cutter head assembly consists of a cutter head base 12 with a knife groove, two pairs of grooves clamping stainless steel fiber bundles between the adjustment plates The cutting knife 1 for cutting stainless steel fiber bundles in the gap cutting area between the tooth tops, the rubber pad 13 outside the outer adjustment plate, and the cutter head cover 14 pressed on the rubber pad;

It is characterized in that: a. A trapezoidal cross-section guide plate 9 with a round hole is provided in the middle of the clamping position of the stainless steel fiber bundle 2 between the feeding sheaves at the bottom of the hopper. b The cutter base 12 fixed on the cutter shaft 11 is provided with 4 knife grooves with a width of 55 mm and a depth of 5 mm, which are evenly distributed on the circumference, between the two sides of the cutting knife 1 in the knife groove, the cutter base and the rubber pad 13 The adjustment plate 10 that makes cutting knife incline 3 ° of angles to the front end is padded with respectively. c. Cutting off the blade with a rising angle of 65°, a rake angle of 0°, a normal rear angle of 25°, a cutter body width of 55mm, and a cutter body thickness of 3mm.

The stainless steel fiber bundle cutting device is driven by a DC motor, and the main shaft is driven by the Z ₁ and Z ₂ sprockets. The 18-tooth Z ₃ gear on the main shaft drives the Z=30-tooth bridge gear and a pair of 108-tooth Z ₄ gears and The fixed sheave 5 and the swing sheave 4 of the feed sheave. The Z ₄ gear simultaneously drives the 26-tooth Z ₁₀ gear and a pair of 28-tooth Z ₉ and Z ₁₀ sprockets, as well as the rubber roller 7 and the metal roller 6 of the traction mechanism, so that the stainless steel fiber bundles entering and feeding the sheaves are subjected to the traction mechanism And the traction force of the feeding sheave is tensioned.

The Z ₅ replacement gear on the main shaft drives the Z=66-tooth bridge gear, the 24-tooth Z ₆ gear, a pair of 25-tooth Z ₇ bevel gears, the cutter shaft, and the cutter assembly. When the stainless steel fiber bundle is clamped The cutting knives of the rotating cutterhead assembly cut the stainless steel fiber strands while feeding between the tooth tips of the two pairs of sheaves.

The cutting knife is designed with a margin angle of 65°, a knife body width of 55mm to meet the condition of V _G /V _Q ≥ 2, and a knife body thickness of 3mm to avoid collision between the cutting knife and the feeding sheave.

Changing the 36 teeth of the original Z6 to 24 teeth keeps the speed ratio relationship between the rotation speed of the cutter head assembly and the rotation speed of the feeding sheave, also to avoid the collision between the cutting knife and the feeding sheave.

The installation of the cutter head assembly is to place an adjustment plate in the knife groove of the base of the cutter head to make the cutting knife tilt at 3 angles to the front; Put the rubber pads into the direction adjustment plate in turn, cover the cutter head cover plate 14, and fasten the cutter head base and the cutter head cover plate with bolts, and finally fix the assembled cutter head assembly on the cutter head shaft .

The improved stainless steel fiber bundle cutting device is compared with the original machine as follows:

Name VD542 Original Parts Features Special Invention Parts Features

Z6 gear m3, 36 teeth (m3), 24 teeth

54 teeth bridge wheel m3, 54 teeth (m3), 66 teeth

Cutter base 6 slots, slot width 35, slot depth 5 4 slots, slot width 55, slot depth 5

Cutting knife Knife body width 35, knife body thickness 5.5, knife body width 55, knife body thickness 3,

         Marginal rise angle is 22°    Marginal rise angle is 65°

Cutter cover 6 mounting holes 4 mounting holes

Adjustment plate None Wedge plate, width 55, wedge angle 3°

Wire guide plate None Trapezoidal plate, hole diameter φ12

Rubber pad 6 mounting holes 4 mounting holes

Claims (2)

1. A stainless steel fiber bundle cutting method is characterized in that the stainless steel fiber bundle is cut off by cutting the stainless steel fiber bundle with a cutting knife in a tensioned state, and the specific method is as follows: a. Send the stainless steel fiber bundles to be cut into the rotating traction mechanism. The stainless steel fiber bundles are pressed against the metal roller by the weight of the rubber roller of the traction mechanism. The stainless steel fiber bundles pass through the hopper and the wire guide plate at the bottom of the hopper , so that it enters the feeding sheave composed of a fixed sheave and a swing sheave, and the stainless steel fiber bundle is tensioned by traction, b When the stainless steel fiber bundle enters the feeding sheave and is clamped by two pairs of tooth tops of the sheave, the rotating cutterhead assembly cuts the stainless steel fiber bundle quickly with a cutting knife. The cutter head assembly cuts the stainless steel fiber bundle once with a cutting knife to realize continuous cutting of the stainless steel fiber bundle. When cutting the stainless steel fiber bundle, the cutting speed V _G at any point on the cutting edge is between the cutting speed V _Q perpendicular to the cutting speed. The ratio satisfies V _G /V _Q ≥ 2. 2. Realize the stainless steel fiber bundle cutting device of the described method of claim 1, comprise: Motor, the motor is a DC motor, and the output shaft end of the motor is fixedly equipped with a sprocket _Z1 ; Transmission mechanism, the speed transmission mechanism consists of sprocket Z ₁ → chain → sprocket Z ₂ → gear Z ₃ → gear Z=50 → a pair of gears Z ₄ → gear Z ₁₀ → sprocket Z ₉ → chain → sprocket Z ₈ →rubber roller→metal roller and sprocket Z ₁ →chain→sprocket Z ₂ →gear Z ₃ →gear Z=50→a pair of gears Z ₄ →feeding sheave and sprocket Z ₁ →chain→sprocket Z ₂ →Gear Z ₅ →Gear Z=66→Gear Z ₆ →A pair of bevel gears Z ₇ →The cutter head assembly consists of three parts; Traction mechanism, the traction mechanism is composed of a rubber roller coated with rubber on the outside driven by the sprocket Z ₈ and a metal roller driven by the rubber roller; a hopper, the hopper is located directly above the common vertical tangent of the oscillating sheave and the fixed sheave; Feeding sheave, the speed of feeding sheave consists of a fixed sheave fixed on the _4th axis of the gear Z and a fixed sheave fixed on the shaft of the swinging sheave connected with the Oldham coupling to crimp the tooth top of the fixed sheave The oscillating sheave is composed of; A sheave pressing mechanism, the sheave pressing mechanism is arranged on the bearing seat of the swing sheave shaft that makes the stainless steel fiber bundles pressed against the fixed sheave; The cutter head assembly, the cutter head assembly is fixed on the cutter head shaft, the cutter head assembly consists of a cutter head base with a knife groove, two pairs of grooved tooth tops clamping stainless steel fiber bundles sandwiched between the adjustment plates The cut-off knife for cutting stainless steel fiber bundles in the gap cutting area, the rubber pad outside the outer adjustment plate, and the cutter head cover plate pressed on the rubber pad; It is characterized by: a. At the bottom of the hopper, there is a trapezoidal cross-section guide plate with a round hole in the middle to limit the clamping position of the stainless steel fiber bundle between the feeding sheaves, b. The base of the cutter head fixed on the shaft of the cutter head is provided with 4 knife grooves with a width of 55mm and a depth of 5mm evenly distributed on the circumference. There are pads between the two sides of the cutting knife in the knife groove, the base of the cutter head and the rubber pad. The cutting knife is inclined to the front end at an angle of 3° to adjust the plate, c. Cutting off the blade with a rising angle of 65°, a rake angle of 0°, a normal rear angle of 25°, a cutter body width of 55mm, and a cutter body thickness of 3mm.

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