CN218580166U

CN218580166U - Elastic card clothing for producing PTFE (polytetrafluoroethylene) needled felt

Info

Publication number: CN218580166U
Application number: CN202123223675.7U
Authority: CN
Inventors: 肖红霞; 李斌
Original assignee: Luoyang Duoweisi Environmental Protection Technology Co ltd
Current assignee: Luoyang Duoweisi Environmental Protection Technology Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2023-03-07
Anticipated expiration: 2031-12-21

Abstract

An elastic card clothing for producing a PTFE (polytetrafluoroethylene) needled felt comprises an elastic base layer and metal card teeth densely distributed on the elastic base layer, wherein the elastic base layer comprises a bottom layer, a middle layer and a surface layer, the bottom layer and the surface layer are elastic layers made of elastic materials, the middle layer is a compact fiber layer, the outer side surface of the bottom layer is in contact with a roller of a carding machine and is provided with a friction surface, the inner side surface of the bottom layer is fixedly connected with the lower surface of the middle layer through a bonding agent, and the inner side surface of the surface layer is fixedly connected with the upper surface of the middle layer through the bonding agent; the connecting end of the metal needle tooth is hooked with the fiber in the middle layer, and the tip of the metal needle tooth is exposed out of the surface layer. The utility model discloses an elastic base layer can provide certain elasticity for the metal pin tooth to reduce the fibrous damage of PTFE, increase the fibrous length of back PTFE of combing, and then improve the quality of acupuncture felt.

Description

Elastic card clothing for producing PTFE (polytetrafluoroethylene) needled felt

Technical Field

The utility model belongs to environmental protection filter media production facility field, concretely relates to elasticity card clothing of PTFE acupuncture felt production usefulness.

Background

The PTFE needled felt is a filtering material with reasonable structure and excellent performance, which takes PTFE short fibers and base cloth as raw materials, needled the carded PTFE short fibers by a needle machine, and fibers among the PTFE fibers of the felt layer, the PTFE fibers of the felt layer and the reinforcing PTFE base cloth are mutually entangled by a mechanical method, so that a PTFE fiber web is reinforced to prepare the felt-shaped non-woven cloth filtering material. The felt layer PTFE fiber is in a single fiber, non-directional three-dimensional microporous structure, high in porosity and small in gas filtering resistance, and is a filtering material with better performance.

The PTFE material needs to be carded by a carding machine to obtain the PTFE short fiber. The roller of the carding machine is provided with card clothing, generally metal card clothing, the surface of which is mostly in a sawtooth shape, and the metal card clothing is wound on the roller of the carding machine and is fixed. Because the PTFE fiber is brittle, the PTFE fiber is easy to break and crack in the carding of the metal card clothing, the fiber length is short, the damage to the surface of the fiber is large, and the quality of the produced needled felt is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an elasticity card clothing of PTFE acupuncture felt production usefulness can provide certain elasticity for the metal latch through the elastic basic unit to reduce the fibrous damage of PTFE, increase the fibrous length of back PTFE of combing, and then improve the quality of acupuncture felt.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: an elastic card clothing for producing PTFE (polytetrafluoroethylene) needled felt comprises an elastic base layer and metal card teeth densely distributed on the elastic base layer, wherein the elastic base layer comprises a bottom layer, a middle layer and a surface layer, the bottom layer and the surface layer are elastic layers made of elastic materials, the middle layer is a compact fiber layer, the outer side surface of the bottom layer is in contact with a roller of a carding machine and is provided with a friction surface, the inner side surface of the bottom layer is fixedly connected with the lower surface of the middle layer through a bonding agent, and the inner side surface of the surface layer is fixedly connected with the upper surface of the middle layer through the bonding agent; the connecting end of the metal needle tooth is hooked with the fiber of the middle layer, and the tip end of the metal needle tooth is exposed out of the surface layer.

The bottom layer and the surface layer are both made of rubber materials.

The outer side surface of the bottom layer is provided with uneven anti-skid patterns to form the friction surface.

The inner side surface of the bottom layer and the inner side surface of the surface layer are respectively provided with a protrusion.

The thickness of the surface layer is smaller than that of the bottom layer.

The middle layer is made of felt.

The connecting end of the metal needle tooth is spiral, U-shaped, S-shaped or arc-shaped.

The metal needle teeth are obliquely arranged on the elastic base layer.

The utility model has the advantages that: the elastic base layer of the utility model is a composite structure layer, the bottom layer and the surface layer can provide elasticity for the metal needle teeth on one hand, and the bottom layer is made of rubber on the other hand, so that the card clothing can be more closely attached to the roller, the friction force is increased during winding, the card clothing is convenient to wind and tighten, and the uneven patterns arranged on the bottom layer can further enhance the friction force between the whole card clothing and the surface of the roller, thereby avoiding the card clothing from slipping; the middle layer adopts the felt, the fiber of the felt is compact, the felt can provide fixation for the metal needle teeth, the holding force is strong, in addition, the surface covering layer of the felt can form a protective layer, and the fiber of the felt is prevented from being mixed; for the metal needle teeth, the tail ends of the metal needle teeth are hooked with the dense fibers of the felt layer, so that the fixing reliability of the metal needle teeth can be further improved, the dense fibers of the felt layer still have certain elasticity, and after the metal needle teeth are hooked with the metal needle teeth, a certain range of movement is provided, and the elastic exertion of the metal needle teeth cannot be restrained. The contact area with the felt layer can be increased by the protrusions arranged on the inner sides of the bottom layer and the surface layer, so that the viscose is more firmly fixed, and when the viscose is smeared, the viscose can be used excessively, so that redundant viscose can permeate into fiber gaps of the felt layer, and the reliability and the integrity of the bottom layer-felt layer-surface layer fixation are further improved.

The utility model discloses an elasticity card clothing alleviates the PTFE fibre damage greatly after using, increases the fibrous length of back PTFE of combing for the powerful increase of the acupuncture felt of making, cohesive force increase, improved the quality of acupuncture felt.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial schematic view of the elastic base layer of the present invention;

FIG. 3 is a first schematic structural view of a metal pin tooth according to the present invention;

FIG. 4 is a second schematic view of the metal pin teeth of the present invention;

FIG. 5 is a schematic view of a third structure of the metal pin teeth of the present invention;

FIG. 6 is a schematic view of a fourth structure of the metal pin teeth of the present invention;

the labels in the figure are: 1. the anti-skid decorative board comprises a bottom layer, 2, a middle layer, 3, a surface layer, 4, metal needle teeth, 401, a spiral tail portion, 402, a U-shaped tail portion, 403, an S-shaped tail portion, 404, an arc-shaped tail portion, 5, anti-skid patterns, 6 and protrusions.

Detailed Description

The following detailed description of the present invention is made with reference to the accompanying drawings and examples, but not to be construed as a limitation of the present invention.

An elastic card clothing for producing PTFE needled felt is used for being arranged on a roller of a carding machine in a winding mode to comb PTFE materials to obtain short fibers for producing PTFE needled felt.

The elastic card clothing comprises an elastic base layer and metal card teeth 4 fixed on the elastic base layer, the elastic base layer provides elasticity for the metal card teeth 4, so that the metal card teeth 4 have certain elasticity when the PTFE material is carded, the damage to the material is reduced, and the quality of the needled felt is ensured.

Elastic base layer form by bottom 1, intermediate level 2 and surface course 3 bonding from bottom to top, wherein bottom 1 and surface course 3 adopt rubber, the rubber of bottom 1 is as the base for with the roller direct contact of carding machine, can increase the frictional force with the roller, when winding card clothing, can avoid skidding of card clothing, can be inseparabler with the card clothing winding, the slip of card clothing also can not appear during the use. In order to further improve the friction force between the bottom layer rubber and the roller, uneven anti-skid patterns 5 can be arranged on the lower surface of the bottom layer 1 to form a friction surface. The inner side surface of the bottom layer 1 rubber is fixedly connected with the felt of the middle layer 2 by smearing adhesive or viscose.

The middle layer 2 adopts felt as a dense fiber layer to provide enough holding force for fixing the metal needle teeth 4, the lower surface of the felt is connected with the rubber of the bottom layer 1 in an adhesion mode, and the upper surface of the felt is also connected with the rubber of the surface layer 3 in an adhesion mode.

The surface layer 3 covers the upper surface of the middle layer 2, and a protective layer can be formed by rubber materials, so that fibers on the felt are prevented from being mixed into PTFE fibers in the carding process.

Preferably, when the bottom layer 1, the middle layer 2 and the surface layer 3 are bonded, the adhesive or the viscose is coated excessively, and then in the process of laminating the two-layer structure, the redundant adhesive or the viscose can penetrate into the gaps of the felt fibers of the middle layer 2, so that the bonding strength of the bottom layer 1 and the middle layer 2 and the bonding strength of the surface layer 3 and the middle layer 2 are enhanced, and the loosening and the separation of the layers in the middle layer are avoided.

Furthermore, the inner side surface of the bottom layer 1 and the inner side surface of the surface layer can be respectively provided with the protrusions 6, so that the contact area between the bottom layer 1 and the felt of the middle layer 2 is increased, and the bonding firmness is enhanced.

Alternatively, the thickness of the bottom layer 1 is greater than the thickness of the top layer 3, so that the bottom layer is more supportive and the top layer is more resilient.

The lower end of the metal needle tooth 4 is a connecting end embedded in the felt, and the tip end of the metal needle tooth 4 is exposed out of the surface layer 3 to comb PTFE. The connecting end of the metal needle teeth 4 is connected with the felt in a reinforced mode through hooking with fibers in the felt, and the metal needle teeth 4 are prevented from falling off in use. The hooking of the metal needle teeth 4 and the felt is realized through the structural design of the lower ends of the metal needle teeth 4. For example, the lower end of the metal pin 4 may be designed as a spiral tail 401, or as a U-shaped tail 402, or as an S-shaped tail 403, or as an arc-shaped tail 404. After the metal pin teeth 4 are installed on the elastic base layer, the metal pin teeth 4 are obliquely arranged relative to the plane of the elastic base layer.

The lower end of the metal pin 4 may be wound several times to form a spiral tail 401 as shown in fig. 3, or bent to form a U-shaped tail 402, an S-shaped tail 403 and an arc-shaped tail 404 as shown in fig. 4-6.

When the card clothing winding device is used, the metal needle teeth 4 face upwards, winding is started from one end of a roller of the carding machine, the first circle of card clothing is fixed by a fixing ring, an iron wire, an iron ring and the like, the metal needle teeth 4 on the edge of the card clothing can be cut off or flattened during fixing, then the card clothing is wound by the second circle of the card clothing until the other end of the roller is wound, and finally the last circle of the card clothing is fixed.

The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and it should be understood by those of ordinary skill in the art that the embodiments of the present invention can be modified or replaced with equivalents with reference to the above embodiments, and any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are all within the scope of the claims of the present application.

Claims

1. The utility model provides an elasticity card clothing of PTFE needled felt production usefulness which characterized in that: the elastic base layer comprises a bottom layer, a middle layer and a surface layer, the bottom layer and the surface layer are elastic layers made of elastic materials, the middle layer is a compact fiber layer, the outer side surface of the bottom layer is in contact with a roller of a carding machine and is provided with a friction surface, the inner side surface of the bottom layer is fixedly connected with the lower surface of the middle layer through a bonding agent, and the inner side surface of the surface layer is fixedly connected with the upper surface of the middle layer through the bonding agent; the connecting end of the metal needle tooth is hooked with the fiber in the middle layer, and the tip of the metal needle tooth is exposed out of the surface layer.

2. The elastic card clothing for producing PTFE needled felt according to claim 1, wherein: the bottom layer and the surface layer are both made of rubber materials.

3. The elastic card clothing for producing PTFE needled felt according to claim 1, wherein: the outer side surface of the bottom layer is provided with uneven anti-skid patterns to form the friction surface.

4. The elastic card clothing for producing PTFE needled felt according to claim 1, wherein: the inner side surface of the bottom layer and the inner side surface of the surface layer are respectively provided with a bulge.

5. The elastic card clothing for the production of PTFE needle felt according to claim 1, characterized in that: the thickness of the surface layer is smaller than that of the bottom layer.

6. The elastic card clothing for producing PTFE needled felt according to claim 1, wherein: the middle layer is made of felt.

7. The elastic card clothing for producing PTFE needled felt according to claim 1, wherein: the connecting end of the metal needle tooth is spiral, U-shaped, S-shaped or arc-shaped.

8. An elastic card wire for producing a PTFE needled felt according to claim 1 or 6, characterized in that: the metal needle teeth are obliquely arranged on the elastic base layer.