阅读说明：本技术 一种环形输送带及其制造方法 (Annular conveying belt and manufacturing method thereof ) 是由 童亚彪 谢文峰 王莉 于 2020-10-14 设计创作，主要内容包括：本发明提供了一种环形输送带及其制造方法,所述输送带由管状无缝骨架织物和通过PU胶水涂覆在骨架织物表面的PU层组成。所述制造方法包括：步骤S1：骨架织物环形定型；步骤S2：骨架织物浸渍PU胶水；步骤S3：骨架织物表面涂覆PU并塑化；步骤S4：裁切成型。本发明所述输送带为环形无接缝,带体厚度精度高、厚度均匀、强度一致,尺寸稳定,使用寿命长,加工方法简单可靠。(The invention provides an annular conveying belt and a manufacturing method thereof, wherein the conveying belt is composed of a tubular seamless framework fabric and a PU layer coated on the surface of the framework fabric through PU glue. The manufacturing method comprises the following steps: step S1: shaping the framework fabric in a ring shape; step S2: impregnating the framework fabric with PU glue; step S3: coating PU on the surface of the skeleton fabric and plasticizing; step S4: and (5) cutting and forming. The conveying belt is annular and seamless, and has the advantages of high belt body thickness precision, uniform thickness, consistent strength, stable size, long service life and simple and reliable processing method.)

1. The annular conveying belt is characterized by consisting of a tubular seamless framework fabric (10) and a PU layer (11) coated on the surface of the framework fabric (10) through PU glue.

2. The conveyor belt of claim 1, wherein: the framework fabric (10) is annular, the framework fabric (10) is provided with an upper layer fabric and a lower layer fabric, two edges of the two layers of fabrics are continuously connected together to form a tubular fabric, the upper layer fabric is formed by weaving surface warps (2) and surface wefts (1), the lower layer fabric is formed by weaving inner warps (4) and inner wefts (3), and the density of the surface/inner warp/weft yarns is as follows: 30 x 40 per inch.

3. The conveyor belt of claim 2, wherein: the specification of the surface warp (2)/the inner warp (4) yarn is as follows: 0.3mm ultra-low shrinkage polyester monofilament, surface weft (1)/inner weft (3) yarn specification: 1000D ultra-low shrinkage polyester filament, twisting: 100 revolutions per meter.

4. A manufacturing method for manufacturing the conveyor belt according to any one of claims 1 to 3, the manufacturing method comprising:

step S1: the framework fabric (10) is shaped in a ring shape;

step S2: the framework fabric (10) is dipped with PU glue;

step S3: coating PU on the surface of the skeleton fabric (10) and plasticizing;

step S4: and (5) cutting and forming.

5. The manufacturing method according to claim 4, characterized in that: in step S1, the tubular skeleton fabric (10) is stretched by two tension rollers (5) with adjustable positions, and the setting parameters are as follows: the temperature is 180 ℃ and the tension is 20 kg.

6. The manufacturing method according to claim 5, characterized in that: in the step S2, the skeleton fabric (10) is kept on the tension roller (5), PU glue is coated on the surface of the skeleton fabric (10), the PU glue is uniformly coated by a scraper (6), and the glue curing temperature is 160 ℃.

7. The manufacturing method according to claim 2, characterized in that: in the step S3, the PU coating material is heated and plasticized by an infrared heater (7), the plasticizing temperature is 165-180 ℃, meanwhile, the uniformity of the belt body is monitored and controlled in real time through a weight online monitoring system (9), the thickness error of the belt body is controlled within a range of +/-5 threads, and the PU layer (11) is compressed through a compression roller (8).

Technical Field

The invention relates to the technical field of annular conveying belts, in particular to an annular conveying belt and a manufacturing method thereof.

Background

The light-weight conveying belt is generally an open annular belt in use, the joint of the annular belt is generally obtained by means of tooth punching and joint, and the joint position of the obtained product is not accurate enough and has low strength. The thickness and density of the joint part are not consistent with the belt body, so that the accuracy of the whole belt body cannot be ensured to be consistent.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide an annular conveying belt and a manufacturing method thereof, wherein the conveying belt is annular and has no seam, the belt body is high in thickness precision, uniform in thickness, consistent in strength, stable in size, long in service life and simple and reliable in processing method.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides an annular conveyer belt, the conveyer belt comprises tubulose seamless skeleton fabric and the PU layer of coating on skeleton fabric surface through PU glue.

As a further improvement of the above technical solution:

the framework fabric is annular, the framework fabric is provided with an upper layer fabric and a lower layer fabric, two edges of the two layers of fabrics are continuously connected together to form a tubular fabric, the upper layer fabric is formed by weaving surface warps and surface wefts, the lower layer fabric is formed by weaving inner warps and inner wefts, and the yarn density of the surface/inner warps and the weft is as follows: 30 x 40 per inch.

Gauge of the surface warp/inner warp yarn: 0.3mm ultra-low shrinkage polyester monofilament, surface weft/lining weft yarn specification: 1000D ultra-low shrinkage polyester filament, twisting: 100 revolutions per meter.

A manufacturing method for manufacturing the conveyor belt, the manufacturing method comprising:

step S1: shaping the framework fabric in a ring shape;

step S2: impregnating the framework fabric with PU glue;

step S3: coating PU on the surface of the skeleton fabric and plasticizing;

step S4: and (5) cutting and forming.

In step S1, the tubular skeleton fabric is stretched by two tension rollers with adjustable positions, and the setting parameters are: the temperature is 180 ℃ and the tension is 20 kg.

In step S2, the skeleton fabric is kept on a tension roller, PU glue is coated on the surface of the skeleton fabric, the PU glue is uniformly coated by a scraper, and the curing temperature of the glue is 160 ℃.

In the step S3, the PU coating material is heated and plasticized by an infrared heater, the plasticizing temperature is 165-180 ℃, meanwhile, the uniformity of the belt body is monitored and controlled in real time through a weight online monitoring system, the thickness error of the belt body is controlled within a range of +/-5 filaments, and the PU layer is compressed through a compression roller 8.

The invention has the beneficial effects that: the conveying belt is annular and seamless, and has high belt body thickness precision, uniform thickness, consistent strength, stable size and long service life; the processing method is simple and reliable, sizing, glue impregnating and PU layer coating can be completed in the same device, the impregnated PU glue can fix the yarns of the fabric, the yarns are prevented from moving, a stable reinforcement is further provided for the conveying belt, meanwhile, the PU glue is used for adhering the PU layer on the surface, the weight online monitoring system reflects the change of the thickness of the fabric by monitoring the weight change of the belt body with a fixed area, the thickness of the belt body is adjusted by the compression roller, and the precision and the uniformity of the conveying belt are improved.

Drawings

Fig. 1 is a schematic view of a conveyor belt according to an embodiment of the present invention.

Fig. 2 is a schematic view of the knitting pattern of the rib fabric according to the embodiment of the present invention.

Fig. 3 is a schematic view of a conveyor belt process according to an embodiment of the invention.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

An endless conveyor belt, as shown in fig. 1, is endless and includes a tubular seamless skeleton fabric 10 and a PU layer 11 coated on the surface of the skeleton fabric 10.

The skeleton fabric 10 is a tubular fabric, and the surface and the reverse side of the tubular fabric have the same weave structure, and are both 1/1 plain weaves.

The knitting form of the rib fabric 10 is a loop as shown in fig. 2, and fig. 1 and 2 are schematic views from the same perspective. The skeleton fabric 10 corresponds to an upper and a lower fabric layers, and both edges of the two fabric layers are continuously joined together to form a tubular fabric. The upper layer fabric is formed by weaving surface warps 2 and surface wefts 1, the lower layer fabric is formed by back warps 4 and back wefts 3, and the density of the surface/back warp weft yarns is as follows: 30 x 40 per inch.

The specification of surface warp 2/inner warp 4 yarn: 0.3mm ultra-low shrinkage polyester monofilament. The face warp 2/back warp 4 provides the loop-shaped carcass fabric 10 with stiffness in the cross-machine direction of the base material. The cross direction is the width direction of the scrim 10, or the direction parallel to the center line of the loop in which the tubular scrim is located.

The specification of surface weft 1/inner weft 3 yarn: 1000D ultra-low shrinkage polyester filament, twisting: 100 revolutions per meter. The surface weft 1/the inner weft 3 bear the main strength of the annular strength layer.

The weaving method of the tubular skeleton fabric 10 comprises the following steps: weaving by weft insertion according to the weft insertion sequence by utilizing the weaving characteristic of a shuttle loom, wherein when the surface weft 1 is inserted, the surface warp 2 is divided into two layers to form a shed to be interwoven with the surface weft 1, and the inner warp 4 is completely sunk in the lower layer of the fabric and is not interwoven with the surface weft 1; when the inner weft 3 is thrown, the surface warp 2 is fully lifted and is not interwoven with the inner weft 3, and the inner warp 4 is divided into two layers to form a shed to be interwoven with the inner weft 3.

The density at two folding edges of the tubular framework fabric 10 structure is uneven, and the folding edges have obvious creases, so that the crease effect can be reduced by adjusting the warp density at the folding edges.

A method of manufacturing the above-described endless conveyor belt, as shown in fig. 3, includes the steps of:

step S1: the skeleton fabric 10 is annularly shaped.

In this step, the tubular or annular skeleton fabric 10 is stretched by the two position-adjustable tension rollers 5, the crease of the skeleton fabric 10 base material is eliminated, the surface smoothness is improved, and the size of the skeleton fabric 10 as the reinforcement can be finely adjusted by adjusting the tension rollers 5.

The setting parameters are as follows: the temperature was 180 ℃ and the temperature was heated by an infrared heater 7 with a tension of 20 kg.

Step S2: the skeleton fabric 10 is impregnated with PU glue.

In this step, the skeleton fabric 10 is held on the tension roller 5, the PU glue is coated on the surface of the skeleton fabric 10, and the PU glue is uniformly coated by the scraper 6.

The glue curing temperature is 160 ℃, the glue is heated by the infrared heater 7, the framework fabric 10 can fix the yarns of the fabric and prevent the yarns from moving by dipping the PU glue, so that a stable reinforcement is further provided for the conveying belt, and the PU glue is used for bonding the PU layer 11 on the surface.

Step S3: the surface of the skeletal fabric 10 is coated with PU and plasticized.

In the step, the coated PU coating material can be powdery, and the PU coating material is heated and plasticized by an infrared heater 7 at a plasticizing temperature of 165-180 ℃. Meanwhile, the PU layer 11 is compressed by the compression roller 8, and the compression roller 8 plays a role in controlling and adjusting the thickness of the coated PU layer 11.

In addition, in this step, the uniformity of the belt body is monitored and controlled in real time by the weight on-line monitoring system 9, so that the thickness error of the belt body is controlled within a range of ± 5 threads, wherein 1mm is 100 threads. The precision and the uniformity of the thickness of the belt body are improved.

The weight on-line monitoring system 9 weighs the framework fabric 10 supported on the tension roller 5, specifically, the weight on-line monitoring system 9 supports and weighs the fabric with a fixed area (such as 1 square meter), that is, the change of the weight monitored by the weight on-line monitoring system 9 can reflect the change of the thickness of the fabric. Along with the rotation of the tension roller 5, the fabric is driven to run, and the weight online monitoring system 9 is used for dynamically monitoring the whole fabric. When the weight monitored by the weight on-line monitoring system 9 fluctuates, the thickness of the fabric section is represented to be uneven. During specific operation, when the weight fluctuation range monitored by the weight online monitoring system 9 exceeds a set value, the gap between the scraper 6 and the framework fabric 10 can be adjusted to control the coating amount of the PU powder, so that the adjustment and control of the fabric thickness are realized, and the processed fabric thickness is more uniform.

Step S4: and (5) cutting and forming. Cutting into required width size.

Finally, it must be said here that: the above embodiments are only used for further detailed description of the technical solutions of the present invention, and should not be understood as limiting the scope of the present invention, and the insubstantial modifications and adaptations made by those skilled in the art according to the above descriptions of the present invention are within the scope of the present invention.