PU conveying belt with anti-shearing capacity

Abstract

The utility model discloses a polyurethane (PU) conveying belt with anti-shearing capability, which comprises a PU conveying belt main body, and the PU conveying belt main body comprises an anti-shearing PU layer, a polyurethane bottom edge layer and a tensile belt core layer distributed between the anti-shearing PU layer and the polyurethane bottom edge layer. The tensile belt core layer comprises a first glass fiber layer, an adhesive layer, a first polyester textile fabric layer, a second glass fiber layer and a second polyester textile fabric layer which are sequentially arranged from the anti-shearing PU layer to the polyurethane bottom edge layer, and the surface of the first glass fiber layer is provided with a tension strip extending and protruding into the adhesive layer; the tensile belt core layer in the PU conveying belt body is provided with the first glass fiber layer and the second glass fiber layer, glass fibers have the tensile capacity such as high strength and impact resistance, the tensile capacity of the tensile belt core layer between the anti-shearing PU layer and the polyurethane bottom edge layer is improved, the tension strips are stably bonded with the bonding glue layer in large-area contact, and the tensile strength of the tensile belt core layer is improved. And the tensile capacity of the anti-shearing PU layer on the PU conveying belt main body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of PU conveyor belts, and in particular relates to a PU conveyor belt with anti-shearing capability. Background Art

[0002] Polyurethane conveyor belts are mainly made of polyurethane as the raw material for the production of conveyor belts. They are resistant to acid and alkali, cut and corrosion. The PU on the surface of polyurethane conveyor belts is relatively thick, with high surface hardness and good anti-shear performance. They are widely used in the food industry or food departments to transport bulk, canned, packaged food, biscuits, candies, fruit and vegetable processing, poultry and meat processing and other related industries;

[0003] When the polyurethane PU conveyor belt is used in the food cutting industry, the PU conveyor belt will come into contact with the cutting tool. Although the surface of the PU conveyor belt is relatively thick and has certain anti-shear performance, under the long-term cutting action of the cutting tool, the PU conveyor belt is subjected to the impact force generated by the cutting. Generally, the core layer of the PU conveyor belt has only 2 to 3 layers of tensile cloth layers. Under the long-term impact, the tensile cloth layers are torn and cracked, and the PU conveyor belt is pulled, causing the core of the conveyor belt to deform and crack, thereby reducing the tensile resistance of the PU conveyor belt. When the PU conveyor belt is used for food cutting, there is a problem that there is no tensile resistance design on the core layer of the PU conveyor belt. For this reason, the present application proposes a PU conveyor belt with anti-shear ability. Utility Model Content

[0004] The utility model aims to provide a PU conveyor belt with anti-shearing capability to solve the problem of the design of the core layer of the PU conveyor belt proposed in the above background technology that there is no tensile resistance.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PU conveyor belt with anti-shear capability, comprising a PU conveyor belt body, the PU conveyor belt body comprising an anti-shear PU layer, a polyurethane bottom edge layer, and a tensile belt core layer distributed between the anti-shear PU layer and the polyurethane bottom edge layer, the tensile belt core layer comprising a first glass fiber layer, an adhesive layer, a first polyester textile fabric layer, a second glass fiber layer, and a second polyester textile fabric layer arranged in sequence from the anti-shear PU layer to the polyurethane bottom edge layer, and the surface of the first glass fiber layer is provided with a tension strip extending and protruding into the interior of the adhesive layer.

[0006] Preferably, the tension strip comprises a strip-shaped connecting portion connected to the first glass fiber layer and an extending portion with a semi-elliptical cross-section, and the inclined surface between the connecting portion and the extending portion is a tensile surface.

[0007] Preferably, the tension strip is in a wave shape.

[0008] Preferably, the first glass fiber layer, the adhesive layer, the first polyester woven fabric layer, the second glass fiber layer and the second polyester woven fabric layer have the same thickness.

[0009] Preferably, an inner rubber surface layer and an outer polyester buffer layer are provided on the side of the polyurethane bottom edge layer, the polyurethane bottom edge layer is flush with the polyester buffer layer, and the surface of the polyester buffer layer facing the rubber surface layer is in a wavy broken line shape.

[0010] Preferably, the side of the polyurethane bottom edge layer is filled with a load core, and the load core includes a load-bearing core, an inner polyester textile fabric covering layer, an adhesive layer and an outer polyester textile fabric covering layer which are arranged in sequence from the inside to the outside.

[0011] Preferably, the outer surface of the load-bearing core is provided with a twisted reinforced glass fiber core.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, the tensile belt core layer in the PU conveyor belt body is designed with a first glass fiber layer and a second glass fiber layer. The glass fiber has tensile strength such as high strength and impact resistance, which increases the tensile strength of the tensile belt core layer between the anti-shear PU layer and the polyurethane bottom edge layer. The tension strip is firmly bonded to the adhesive layer in large-area contact, which increases the tensile strength of the anti-shear PU layer on the PU conveyor belt body and avoids deformation and cracking of the anti-shear PU layer when being cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic cross-sectional structure diagram of the main body of the PU conveyor belt of the utility model;

[0016] Figure 3 For the utility model Figure 2 The enlarged structural diagram of the middle B part;

[0017] Figure 4 For the utility model Figure 2 The enlarged structural diagram of the middle C part;

[0018] Figure 5 This is a bottom view structural schematic diagram of the first glass fiber layer of the utility model;

[0019] In the figure: 1. PU conveyor belt body; 11. anti-shear PU layer; 12. first glass fiber layer; 13. adhesive layer; 14. first polyester textile layer; 15. second glass fiber layer; 16. second polyester textile layer; 17. polyurethane bottom edge layer; 21. load-bearing core; 22. inner polyester textile covering layer; 23. adhesive layer; 24. outer polyester textile covering layer; 121. tension bar; 211. reinforced glass fiber core; 171. adhesive surface layer; 172. polyester buffer layer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example

[0022] See also Figures 1 to 5 The utility model provides a technical solution: a PU conveyor belt with anti-shearing ability, comprising a PU conveyor belt body 1, the PU conveyor belt body 1 comprising an anti-shearing PU layer 11, a polyurethane bottom edge layer 17, and a tensile belt core layer distributed between the anti-shearing PU layer 11 and the polyurethane bottom edge layer 17, the tensile belt core layer comprising a first glass fiber layer 12, an adhesive layer 13, a first polyester textile layer 14, a second glass fiber layer 15 and a second polyester textile layer 16 arranged in sequence from the anti-shearing PU layer 11 to the polyurethane bottom edge layer 17, and the first glass fiber layer 12 is designed to be And the second glass fiber layer 15, the glass fiber has high strength and impact resistance and other tensile strength, which increases the tensile strength of the tensile belt core layer between the anti-shear PU layer 11 and the polyurethane bottom edge layer 17, and avoids deformation and cracking of the tensile belt core layer, thereby reducing the tensile strength of the anti-shear PU layer 11 on the PU conveyor belt body 1, and causing the anti-shear PU layer 11 to deform and crack when cut. The surface of the first glass fiber layer 12 is provided with a tension strip 121 extending and protruding into the inside of the bonding layer 13. The tension strip 121 is firmly bonded to the bonding layer 13, so that the first glass fiber layer 12 is firmly bonded.

[0023] In this embodiment, the tension bar 121 includes a strip-shaped connecting portion connected to the first glass fiber layer 12 and an extension portion with a semi-elliptical cross-section. The inclined surface between the connecting portion and the extension portion is a tensile surface. The tension bar 121 is subjected to the resistance of the adhesive layer 13, so that the first glass fiber layer 12 and the first polyester textile fabric layer 14 are firmly bonded. The tension bar 121 is wavy in shape. The wavy tension bar 121 is long in length and has a large contact area with the adhesive layer 13, which is conducive to firmly bonding the tension bar 121.

[0024] In this embodiment, the first glass fiber layer 12, the adhesive layer 13, the first polyester woven fabric layer 14, the second glass fiber layer 15 and the second polyester woven fabric layer 16 have the same thickness. The thickness of the first glass fiber layer 12 is between 0.2 mm and 0.3 mm, so that the thickness of the tensile tape core layer is within an appropriate range.

[0025] In this embodiment, an inner rubber surface layer 171 and an outer polyester buffer layer 172 are provided on the side of the polyurethane bottom edge layer 17. The polyurethane bottom edge layer 17 is flush with the polyester buffer layer 172. The surface of the polyester buffer layer 172 facing the rubber surface layer 171 is in a wavy fold line shape. The polyester buffer layer 172 plays a buffering role. The side of the polyurethane bottom edge layer 17 is filled with a load core. The load core includes a load-bearing core 21, an inner polyester textile fabric covering layer 22, an adhesive layer 23 and an outer polyester textile fabric covering layer arranged in sequence from the inside to the outside. 24. The outer surface of the load-bearing core 21 is provided with a twisted reinforced glass fiber core 211. The filled load core has a certain load. When the PU conveyor belt body 1 is conveyed, due to the effect of the load, the friction force on the side of the PU conveyor belt body 1 is greater than the friction force at the center, so that the side of the PU conveyor belt body 1 is not easy to deflect. When the center of the PU conveyor belt body 1 deflects toward the side, the polyester buffer layer 172 buffers the PU conveyor belt body 1 at the center to prevent the PU conveyor belt body 1 from deflecting as a whole.

[0026] The working principle and use process of this utility model:

[0027] The tensile belt core layer in the PU conveyor belt body 1 is designed with a first glass fiber layer 12 and a second glass fiber layer 15. The glass fiber has high strength and impact resistance and other tensile strength, which increases the tensile strength of the tensile belt core layer between the anti-shear PU layer 11 and the polyurethane bottom edge layer 17. The wavy tension strip 121 is long, and the contact area between the tension strip 121 and the adhesive layer 13 is large, so that the first glass fiber layer 12 and the first polyester textile fabric layer 14 are firmly bonded, avoiding deformation and cracking of the tensile belt core layer, thereby reducing the tensile strength of the anti-shear PU layer 11 on the PU conveyor belt body 1, and causing the anti-shear PU layer 11 to deform and crack when being cut;

[0028] The load core filled on the side of the polyurethane bottom edge layer 17 has a certain load. When the PU conveyor belt body 1 is conveying, due to the effect of the load, the friction force on the side of the PU conveyor belt body 1 is greater than the friction force at the center, making it difficult for the side of the PU conveyor belt body 1 to deflect. When the center position of the PU conveyor belt body 1 deflects toward the side, the polyester buffer layer 172 buffers the PU conveyor belt body 1 at the center to prevent the PU conveyor belt body 1 from deflecting as a whole.

[0029] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PU conveyor belt with anti-shearing capability, comprising a PU conveyor belt body (1), characterized in that: The PU conveyor belt body (1) comprises an anti-shear PU layer (11), a polyurethane bottom edge layer (17), and a tensile belt core layer distributed between the anti-shear PU layer (11) and the polyurethane bottom edge layer (17); the tensile belt core layer comprises a first glass fiber layer (12), an adhesive layer (13), a first polyester woven fabric layer (14), a second glass fiber layer (15), and a second polyester woven fabric layer (16) arranged in sequence from the anti-shear PU layer (11) to the polyurethane bottom edge layer (17); and a tension strip (121) extending and protruding into the interior of the adhesive layer (13) is provided on the surface of the first glass fiber layer (12).

2. A PU conveyor belt with anti-shearing capability according to claim 1, characterized in that: The tension strip (121) comprises a strip-shaped connecting portion connected to the first glass fiber layer (12) and an extending portion with a semi-elliptical cross-section, and the inclined surface between the connecting portion and the extending portion is a tensile surface.

3. The PU conveyor belt with anti-shearing ability according to claim 1, characterized in that: The tension strip (121) is in a wave shape.

4. The PU conveyor belt with anti-shearing ability according to claim 1, characterized in that: The first glass fiber layer (12), the adhesive layer (13), the first polyester woven fabric layer (14), the second glass fiber layer (15) and the second polyester woven fabric layer (16) have the same thickness.

5. The PU conveyor belt with anti-shearing capability according to claim 1, characterized in that: An inner rubber surface layer (171) and an outer polyester buffer layer (172) are provided on the side of the polyurethane bottom edge layer (17); the polyurethane bottom edge layer (17) is flush with the polyester buffer layer (172); and the surface of the polyester buffer layer (172) facing the rubber surface layer (171) is in a wavy broken line shape.

6. The PU conveyor belt with anti-shearing ability according to claim 1, characterized in that: The side of the polyurethane bottom edge layer (17) is filled with a load core, and the load core comprises a load-bearing core (21), an inner polyester textile fabric covering layer (22), an adhesive layer (23) and an outer polyester textile fabric covering layer (24) which are arranged in sequence from the inside to the outside.

7. The PU conveyor belt with anti-shearing capability according to claim 6, characterized in that: The outer surface of the load-bearing core (21) is provided with a twisted reinforced glass fiber core (211).

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