CN110923856B - A pre-oxidized felt opening machine - Google Patents

Abstract

The present invention belongs to the technical field of preoxidized felt processing equipment, and in particular, relates to a preoxidized felt opening machine. The opening machine comprises: a feed conveying device, arranged at the front end of the opener; a primary raw material conveying device, arranged at the rear end of the feed conveying device; an opening device, arranged at the rear end of the primary raw material conveying device, the opening device comprising a large licker-in roller and a supporting plate; a secondary raw material conveying device, arranged at the rear end of the opening device; and a material guide plate, arranged between the large licker-in roller and the secondary raw material conveying device. The opening machine can open high-density and high-binding preoxidized felt thick felt defective products, and the length of the opened preoxidized filaments is 50mm-60mm, which will not destroy the long fiber structure, and will not fail to prepare or be difficult to prepare the preoxidized felt due to the destruction of the fiber structure. The production efficiency can be greatly improved, the utilization rate of the preoxidized felt can be improved, and the cost can be reduced.

Description

A pre-oxidized felt opening machine

Technical Field

The invention belongs to the technical field of preoxidized felt processing equipment, and in particular relates to a preoxidized felt opening machine.

Background Art

Carbon fiber is a new type of fiber material with high strength and high modulus fiber with a carbon content of more than 95%. It is a microcrystalline graphite material obtained by stacking organic fibers such as flake graphite microcrystals along the axial direction of the fiber and undergoing carbonization and graphitization treatment. Carbon fiber has many excellent properties. It has high axial strength and modulus, low density, high specific performance, no creep, ultra-high temperature resistance in non-oxidizing environment, good fatigue resistance, and strong electrical and thermal conductivity. The pre-oxidized felt is made into a high-density and high-bonding structure, combined with other friction materials, and then subjected to multiple carbonization treatments to make brake pads used in the aerospace field.

In the process of manufacturing brake pads used in the aerospace field, a certain amount of pre-oxidized felt defective products will be produced due to strict product requirements, leftover scraps from cutting, and other reasons. These pre-oxidized felt defective products cannot be used directly due to quality and size limitations, and need to be re-opened to make pre-oxidized yarns, which are then re-laid and woven into large sheets of pre-oxidized felt, and then prepared into specifications and products used in other fields through multiple subsequent steps.

At present, the commonly used opening equipment is mainly used for the recycling and reuse of clothes, the opening of PP cotton, cloth scraps, polyester staple fibers, etc. These items are thin and soft, so it is easier to open them. The structure of the opening equipment is relatively simple, and the items can be opened into the required fiber shape at one time. For the above-mentioned high-density and high-binding pre-oxidized felt defective products, the existing opening machines either cannot open them, or the one-time opening will destroy the long fiber structure, affecting the later laying and needling effects.

Summary of the invention

In order to solve the above-mentioned problem of defective preoxidized felt with high density and high bonding strength, the existing opening machines either cannot open it or the one-time opening will destroy the long fiber structure and affect the subsequent laying and needling effects. The preoxidized felt opening machine provided by the present invention can solve the above-mentioned problem well.

The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a pre-oxidized felt opening machine, characterized in that the opening machine comprises:

The feeding conveyor is arranged at the front end of the opener and is used to convey the raw materials to be opened;

A primary material conveying device, arranged at the rear end of the feed conveying device, for clamping the material to be opened and conveyed forward from the feed conveying device;

An opening device is arranged at the rear end of the primary raw material conveying device, and is used for opening the raw material to be opened conveyed by the primary raw material conveying device, wherein the opening device comprises a large licker-in roller and a supporting plate, wherein the large licker-in roller is arranged above the supporting plate, and the distance between the tip of the lowermost thorn of the large licker-in roller and the supporting plate is less than the thickness of the raw material to be opened;

A secondary material conveying device, disposed at the rear end of the opening device, for clamping and conveying the remaining raw materials to be opened forward to a material discharge port for the raw materials to be opened; and

The material guide plate is arranged between the large licker-in roller and the secondary raw material conveying device, and is used for guiding the opened loose materials to the upper opened loose material discharge port.

Furthermore, the thorns on the surface of the large pricking-in roller are in a cone shape, the height of the cone is 5mm-30mm, and the angle of the cone is 20°-60°.

Furthermore, the thorns on the surface of the large licker-in roller are in the shape of an isosceles right triangle, one of the right-angled sides of the isosceles right triangle is fixed on the large licker-in roller, and the other right-angled side of the isosceles right triangle is in the same direction as the running direction of the large licker-in roller.

Furthermore, on the large licker-in roller, within the same row, the distance between thorns is 5 mm-25 mm, and the distance between rows is 10 mm-25 mm.

Furthermore, the primary raw material conveying device and the secondary raw material conveying device are both composed of two small licker-in rollers arranged up and down, and the distance between the two small licker-in rollers of the secondary raw material conveying device is smaller than the distance between the two small licker-in rollers of the primary raw material conveying device.

Furthermore, the thorns on the surface of the small licker-in roller are in the shape of an isosceles right triangle, one of the right-angled sides of the isosceles right triangle is fixed on the small licker-in roller, and the other right-angled side of the isosceles right triangle is opposite to the feeding direction.

Furthermore, the heights of the two small licker-in rollers of the primary raw material conveying device and the two small licker-in rollers of the secondary raw material conveying device are adjustable.

Furthermore, the heights of the large licker-in roller, the material supporting plate and the material guiding plate are all adjustable.

Furthermore, an anti-rolling clamping device is provided between the primary raw material conveying device and the opening device, and the anti-rolling clamping device is used to clamp the raw material to be opened.

Furthermore, the height of the anti-roll pressing device is adjustable.

The technical effects and advantages of the present invention are as follows: the opening machine designed by the present invention has a simple structure, is easy to use, and is convenient to maintain; the front and rear feeding conveying devices cooperate with the large licker-in roller to push and open the raw materials to be opened, and the pre-oxidized thick felt with high density and high binding force can be opened. The length of the pre-oxidized yarn opened is 50mm-60mm, and the long fiber structure will not be destroyed. The pre-oxidized felt will not be unable to be prepared or difficult to prepare due to the destruction of the fiber structure. The shape of the thorns on the surface of the small licker-in rollers at each level is designed to be an isosceles right triangle, and the isosceles right triangle has One right-angled side is fixed on the small licker-in roller, and the other right-angled side is opposite to the feeding direction, which is conducive to grasping the raw materials to be opened and preventing the raw materials from shifting during the opening process. The shape of the thorns on the surface of the large licker-in rollers at each level is designed to be an isosceles right triangle. One of the right-angled sides of the isosceles right triangle is fixed on the large licker-in roller, and the other right-angled side is in the same direction as the running direction of the large licker-in roller. The strength of the thorns can be improved, the thorns can be prevented from breaking during the opening process, and the service life of the large licker-in roller can be increased, thereby greatly improving the production efficiency, while improving the utilization rate of the pre-oxidized felt and reducing the cost.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic structural diagram of the invention preoxidized felt opening machine;

Among them: 1-primary raw material conveying device, 2-raw material to be opened, 3-feeding conveying device, 4-large licker-in roller, 5-anti-rolling clamping device, 6-material guide plate, 7-secondary raw material conveying device, 8-supporting plate, 9-discharging port for raw material to be opened, 10-discharging port for opened material.

DETAILED DESCRIPTION

The present invention is described in detail below with reference to the accompanying drawings and embodiments.

Embodiment 1:

As shown in FIG1 , a preoxidized felt opening machine comprises:

The feeding conveyor 3 is arranged at the front end of the opener, and is used to convey the raw material 2 to be opened. The surface of the feeding conveyor 3 is a lawn belt or a flat belt. The feeding speed of the feeding conveyor 3 is adjustable, and the feeding speed of the feeding conveyor 3 is 20mm/min-100mm/min.

The primary material conveying device 1 is arranged at the rear end of the feed conveying device 3, and is composed of two small licker-in rollers arranged up and down, and is used to clamp the raw material 2 to be opened and loosened delivered from the feed conveying device 3 and convey it forward;

The opening device is arranged at the rear end of the primary raw material conveying device 1, and is used for opening the raw material 2 to be opened conveyed by the primary raw material conveying device 1. The opening device comprises a large licker-in roller 4 and a supporting plate 8. The large licker-in roller 4 is arranged above the supporting plate 8. The distance between the tip of the lowermost thorn of the large licker-in roller 4 and the supporting plate 8 is less than the thickness of the raw material 2 to be opened. The shape of the thorns on the surface of the large licker-in roller 4 is conical, the height of the cone is 5mm-30mm, the angle of the cone is 20°-60°, the rotation speed of the large licker-in roller 4 is 200RPM-750RPM, and the large licker-in roller 4, in the same row, the distance between the thorns is 5mm-25mm, and the distance between the rows is 10mm-25mm. The material of the thorns on the large licker-in roller 4 is quenched steel or other high-strength steel. The tip of the lowermost thorn of the large licker-in roller 4 is 5mm-20mm lower than the tip of the lowermost thorn of the small licker-in roller above the primary raw material conveying device 1; the surface roughness of the side of the supporting plate 8 supporting the raw material 2 to be opened is Ra0.2-Ra1.6, and the material is stainless steel. The installation height is flush with the upper surface of the feeding conveying device 3;

The secondary material conveying device 7 is arranged at the rear end of the opening device, and is composed of two small licker-in rollers arranged up and down, and is used to clamp the remaining raw material 2 to be opened and convey it forward to the raw material discharge port 9 to be opened. The distance between the two small licker-in rollers of the secondary material conveying device 7 is smaller than the distance between the two small licker-in rollers of the primary material conveying device 1 by 5mm-20mm; and

The material guide plate is arranged between the large licker-in roller 4 and the secondary raw material conveying device 7, and is used for guiding the opened loose material to the upper opened loose material discharge port 10. The surface roughness of one side of the material guide plate 6 used for guiding the opened loose material is Ra0.2-Ra1.6, and the material is stainless steel. The installation height is that the lower end of the material guide plate 6 is tangent to the upper small licker-in roller of the secondary raw material conveying device 7.

An anti-roll clamping device 5 is provided between the primary raw material conveying device 1 and the opening device. The anti-roll clamping device 5 is used to clamp the raw material 2 to be opened. The height of the anti-roll clamping device 5 is adjustable. The adjustable height of the anti-roll clamping device 5 is 0.5mm-1.5mm higher than the raw material to be opened. The surface roughness of the side of the anti-roll clamping device 5 close to the raw material 2 to be opened is Ra0.2-Ra1.6, and the material is stainless steel.

The shape of the thorns on the surface of the small licker-in roller of the primary raw material conveying device 1 and the secondary raw material conveying device 7 is an isosceles right triangle, the side length of the isosceles right triangle is 5mm-25mm, the thickness of the isosceles right triangle is 0.5mm-3mm, one of the right-angled sides of the isosceles right triangle is fixed on the small licker-in roller, and the other right-angled side of the isosceles right triangle is opposite to the feeding direction. On the small licker-in roller, within the same row, the distance between thorns is 5mm-20mm, and between rows of thorns, the distance between rows is 10mm-20mm. The material of the thorns on the small licker-in roller is quenched steel or other high-strength steel.

The heights of the two small licker-in rollers, the large licker-in roller 4, the support plate 8, the guide plate 6 and the two small licker-in rollers of the primary material conveying device 1 and the secondary material conveying device 7 are all adjustable.

The opening machine is now described in conjunction with a specific embodiment. The raw material 2 to be opened is a pre-oxidized felt with high density and high bonding force, and the size of the pre-oxidized felt raw material is φ250mm×45mm; the surface of the feed conveyor belt 3 is a lawn belt, and the feeding speed of the feed conveyor belt 3 is 60mm/min; the installation height of the small licker-in rollers below the primary raw material conveying device 1 and the secondary raw material conveying device 7 is consistent, and the tip position of the lower end of the small licker-in roller above the secondary raw material conveying device 7 is 15mm lower than the tip position of the lower end of the small licker-in roller above the primary raw material conveying device 1. The shape of the thorns on the surface of each small licker-in roller of the primary raw material conveying device 1 and the secondary raw material conveying device 7 is an isosceles right triangle, the right angle length of the isosceles right triangle is 12mm, and the thickness of the isosceles right triangle is 2mm. On the small licker-in rollers of the primary raw material conveying device 1 and the secondary raw material conveying device 7, the distance between the thorns in the same row is 10mm, and the distance between the rows is 10mm. The distance between the rows is 10mm, and the material of the thorns is quenched steel; the shape of the thorns on the surface of the large licker-in roller 4 is conical, the height of the cone is 20mm, the angle of the cone is 30°, the rotation speed of the large licker-in roller 4 is 600RPM, on the large licker-in roller 4, in the same row, the distance between the thorns is 10mm, between the thorns of each row, and the distance between the rows is 10mm, and the material is quenched steel, the tip of the lower end of the large licker-in roller 4 is 15mm lower than the tip of the lower end of the small licker-in roller above the primary raw material conveying device 1; the surface roughness of the side of the supporting plate 8 supporting the raw material 2 to be opened is Ra0.8, and the material is 304 stainless steel; the surface roughness of the side of the guide plate 6 close to the large licker-in roller 4 is Ra0.8, and the material is 304 stainless steel; the surface roughness of the side of the anti-rolling clamping device 5 close to the raw material 2 to be opened is Ra0.8, and the material is 304 stainless steel, and the installation position of the anti-rolling clamping device 5 is 1mm higher than the upper surface of the raw material 2 to be opened;

During use, follow the steps below to loosen:

S1. The tip position of the lowermost thorn of the small licker-in roller above the primary raw material conveying device 1 is adjusted to be lower than the thickness of the raw material 2 to be opened 5mm, and the other devices are adjusted to the required height;

S2. The raw material 2 to be opened is placed on the feed conveyor 3. The raw material 2 to be opened is conveyed to the primary raw material conveying device 1 as the feed conveyor 3 operates. The thorn of the primary raw material conveying device 1 pierces the raw material 2 to be opened, driving the raw material 2 to continue to run in the direction of the opening device, passing through the anti-rolling clamping device 5 in the middle, and the anti-rolling clamping device 5 clamps the raw material 2 to be opened;

S3. The primary material conveying device 1 drives the raw material to be opened 2 to the supporting plate 8, and the large licker-in roller 4 above the supporting plate 8 begins to open the raw material 2 to be opened, and the opening thickness of the raw material 2 to be opened is 15 mm. The opened material is guided along the guide plate 6 to the upper opening material outlet 10;

S4. After the large licker-in roller 4 has opened the raw material 2 once, the remaining 30 mm thick raw material 2 to be opened continues to move toward the secondary raw material conveying device 7, and the thorns of the secondary raw material conveying device 7 penetrate into the remaining unopened raw material 2 to be opened, driving the remaining unopened raw material 2 to continue to move, and the raw material 2 to be opened is discharged from the raw material discharge port 9;

S5. After the first opening is completed, the small licker-in roller above the primary raw material conveying device 1, the small licker-in roller above the secondary raw material conveying device 7, the large licker-in roller 4, the anti-roll clamping device 5 and the guide plate 6 are adjusted to a height of 15 mm, and the height is adjusted to the thickness of the raw material 2 to be opened once;

S6. The remaining raw materials 2 to be opened are placed back on the feed conveyor 3, and steps S1-S5 are repeated, and so on. After three openings, all the raw materials 2 to be opened are opened, and the opened materials are collected.

The opening device can open the defective preoxidized thick felt products with high density and high bonding strength layer by layer. The length of the loosened preoxidized filaments is 50mm-60mm. At the same time, the long fiber structure will not be destroyed, which is conducive to the reuse of the defective preoxidized thick felt products.

Embodiment 2:

Embodiment 2 is further improved on the basis of embodiment 1. According to the thickness of the opening machine to be opened at one time, the upper small licker-in roller of the primary raw material conveying device 1, the upper small licker-in roller of the secondary raw material conveying device 7, the large licker-in roller 4, the anti-rolling clamping device 5 and the guide plate 6 are fixed on the same height adjustment device at the same time.

During use, the height of the height adjustment device is directly adjusted so that the upper small licker-in roller of the primary raw material conveying device 1, the upper small licker-in roller of the secondary raw material conveying device 7, the large licker-in roller 4, the anti-roll pressing device 5 and the material guide plate 6 fixed on the height adjustment device can move downward at the same time. After moving to the required height, the loosening process is directly carried out. With this design, all devices can be adjusted downward at one time without adjusting each device downward one by one, which can save time and improve work efficiency.

Embodiment 3:

Embodiment 3 is further improved on the basis of embodiment 1. According to the thickness of the opening machine to be opened at one time, the upper small licker-in roller, the large licker-in roller 4, the anti-rolling clamping device 5 and the guide plate 6 of the primary raw material conveying device 1 are fixed on the same height adjustment device at the same time, and the upper small licker-in roller of the secondary raw material conveying device 7 can adjust the height separately.

During use, adjust the height of the height adjustment device, move to the required height, and then open the raw material 2 to be opened. After the raw material 2 to be opened is opened by the large licker-in roller 4, the height of the small licker-in roller above the secondary raw material conveying device 7 can be adjusted at any time according to the thickness of the raw material after opening, so that it can be better used with the opener, which can make the opener more flexible to operate and more convenient to use during use.

Embodiment 4:

Embodiment 4 is further improved on the basis of embodiment 1. The shape of the thorns on the surface of the large licker-in roller 4 is an isosceles right triangle. The side length of the isosceles right triangle is 20 mm, and the thickness of the isosceles right triangle is 2 mm. One of the right-angled sides of the isosceles right triangle is installed on the licker-in roller. When the large licker-in roller 4 is installed, the other right-angled side of the isosceles right triangle has the same running direction as the large licker-in roller.

During use, the specific implementation method is the same as the specific implementation method of Example 1. The isosceles right triangle in the large licker-in roller has one of its right-angled sides fixed on the large licker-in roller, and the other right-angled side of the isosceles right triangle is in the same direction as the running direction of the large licker-in roller, which can improve the strength of the thorns, prevent the thorns from breaking during the opening process, and improve the service life of the large licker-in roller.

Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims (5)

1. A pre-oxidized felt opening machine, characterized in that the opening machine comprises: The feeding conveyor is arranged at the front end of the opener and is used to convey the raw materials to be opened; A primary material conveying device, arranged at the rear end of the feed conveying device, for clamping the material to be opened and conveyed forward from the feed conveying device; An opening device is arranged at the rear end of the primary raw material conveying device, and is used for opening the raw material to be opened conveyed by the primary raw material conveying device. The opening device comprises a large licker-in roller and a supporting plate. The large licker-in roller is arranged above the supporting plate. The thorns on the surface of the large licker-in roller are in a cone shape, the height of the cone is 5mm-30mm, and the angle of the cone is 20°-60°. On the large licker-in roller, in the same row, the distance between the thorns is 5mm-25mm, and the distance between the rows is 10mm-25mm. The distance between the tip of the lowermost thorn of the large licker-in roller and the supporting plate is less than the thickness of the raw material to be opened. A secondary material conveying device, disposed at the rear end of the opening device, for clamping and conveying the remaining raw materials to be opened forward to a material discharge port for the raw materials to be opened; and A material guide plate is provided between the large licker-in roller and the secondary raw material conveying device, and is used for guiding the opened loose materials to an upper opened material discharge port; The primary raw material conveying device and the secondary raw material conveying device are both composed of two small licker-in rollers arranged up and down, the distance between the two small licker-in rollers of the secondary raw material conveying device is smaller than the distance between the two small licker-in rollers of the primary raw material conveying device, the shape of the thorns on the surface of the small licker-in roller is an isosceles right triangle, one of the right-angled sides of the isosceles right triangle is fixed on the small licker-in roller, and the other right-angled side of the isosceles right triangle is opposite to the feeding direction. 2. A pre-oxidized felt opening machine, characterized in that: the opening machine comprises: The feeding conveyor is arranged at the front end of the opener and is used to convey the raw materials to be opened; A primary material conveying device, arranged at the rear end of the feed conveying device, for clamping the material to be opened and conveyed forward from the feed conveying device; An opening device is arranged at the rear end of the primary raw material conveying device, and is used for opening the raw materials to be opened conveyed by the primary raw material conveying device. The opening device comprises a large licker-in roller and a supporting plate. The large licker-in roller is arranged above the supporting plate. The shape of the thorns on the surface of the large licker-in roller is an isosceles right triangle. One of the right-angled sides of the isosceles right triangle is fixed on the large licker-in roller. The other right-angled side of the isosceles right triangle has the same running direction as the large licker-in roller. On the large licker-in roller, within the same row, the distance between thorns is 5mm-25mm, and the distance between rows is 10mm-25mm. The distance between the tip of the lowermost thorn of the large licker-in roller and the supporting plate is less than the thickness of the raw materials to be opened. A secondary material conveying device, disposed at the rear end of the opening device, for clamping and conveying the remaining raw materials to be opened forward to a material discharge port for the raw materials to be opened; and A material guide plate is provided between the large licker-in roller and the secondary raw material conveying device, and is used for guiding the opened loose materials to an upper opened loose material discharge port; The primary raw material conveying device and the secondary raw material conveying device are both composed of two small licker-in rollers arranged up and down, the distance between the two small licker-in rollers of the secondary raw material conveying device is smaller than the distance between the two small licker-in rollers of the primary raw material conveying device, the shape of the thorns on the surface of the small licker-in roller is an isosceles right triangle, one of the right-angled sides of the isosceles right triangle is fixed on the small licker-in roller, and the other right-angled side of the isosceles right triangle is opposite to the feeding direction. 3. A preoxidized felt opening machine according to claim 1 or 2, characterized in that the heights of the two small licker-in rollers of the primary raw material conveying device and the two small licker-in rollers of the secondary raw material conveying device are adjustable. 4. A preoxidized felt opening machine according to claim 1 or 2, characterized in that the heights of the large licker-in roller, the supporting plate and the guide plate are all adjustable. 5. A pre-oxidized felt opening machine according to claim 1 or 2, characterized in that an anti-rolling clamping device is provided between the primary raw material conveying device and the opening device, and the anti-rolling clamping device is used to clamp the raw material to be opened.