CN113442479A - Manufacturing process of large-circumference seamless annular conveying belt - Google Patents
Manufacturing process of large-circumference seamless annular conveying belt Download PDFInfo
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- CN113442479A CN113442479A CN202110818306.8A CN202110818306A CN113442479A CN 113442479 A CN113442479 A CN 113442479A CN 202110818306 A CN202110818306 A CN 202110818306A CN 113442479 A CN113442479 A CN 113442479A
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
- B29D29/06—Conveyor belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/32—Belts or like endless load-carriers made of rubber or plastics
- B65G15/34—Belts or like endless load-carriers made of rubber or plastics with reinforcing layers, e.g. of fabric
Abstract
The invention discloses a manufacturing process of a large-circumference seamless annular conveying belt, which is used for solving the problem that base cloth layers are easy to be mutually staggered or separated from each other in the manufacturing process of the conventional conveying belt. The invention comprises the following steps: s1, winding and sleeving the base cloth to a preset number of layers to form an annular base cloth layer; s2, starting sewing equipment, and performing stitch-bonding, quilting or embroidering operation on the annular base cloth layer after the step S1 is completed, so that the base cloth layers in the annular base cloth layer are connected together through sewing threads to obtain annular laminated base cloth; and S3, detaching the annular laminated base cloth from the sewing equipment to obtain the finished annular conveying belt.
Description
Technical Field
The invention relates to the technical field of manufacturing of conveying belts, in particular to a manufacturing process of a large-circumference seamless annular conveying belt.
Background
In the current conveyer belt manufacture process, operating personnel forms the cyclic annular base cloth of multilayer through stacking the winding with cyclic annular base cloth multilayer, then, operating personnel bonds adjacent two-layer base cloth through the gluing agent usually, and at the in-process that bonds, the base cloth layer appears mutually misplacing or breaks away from the problem between the layer easily each other, seriously influences the off-the-shelf quality of conveyer belt.
Therefore, it is an important subject of research by those skilled in the art to find a process for manufacturing a large-circumference seamless endless conveyor belt that can solve the above-mentioned technical problems.
Disclosure of Invention
The embodiment of the invention discloses a manufacturing process of a large-circumference seamless annular conveying belt, which is used for solving the problem that base cloth layers are easy to be mutually staggered or separated from each other in the manufacturing process of the conventional conveying belt.
The embodiment of the invention provides a process for manufacturing a large-circumference seamless annular conveying belt, which comprises the following steps:
s1, winding and sleeving the base cloth to a preset number of layers to form an annular base cloth layer;
s2, starting sewing equipment, and performing stitch-bonding, quilting or embroidering operation on the annular base cloth layer after the step S1 is completed, so that the base cloth layers in the annular base cloth layer are connected together through sewing threads to obtain annular laminated base cloth;
and S3, detaching the annular laminated base cloth from the sewing equipment to obtain the finished annular conveying belt.
Optionally, the step S1 specifically includes:
leading out the base cloth, leading the base cloth into the sewing equipment from an inlet of the sewing equipment under the guidance of the first conveying belt supporting device, and leading the base cloth to detour back to the inlet of the sewing equipment from an outlet of the sewing equipment through the guidance of the first conveying belt supporting device, and repeating the operation to form at least two layers of annular base cloth layers sleeved in a laminating way.
Optionally, after detaching the annular laminated base fabric from the sewing apparatus, the method further includes:
s31, sleeving the annular laminated base cloth on a second conveying belt supporting device of a glue applying device, wherein the glue applying device applies glue to the annular laminated base cloth;
and S32, guiding the annular laminated base cloth with the sizing material into a first heating device through the second conveying belt supporting device, heating the annular laminated base cloth by the first heating device, melting the heated sizing material, and connecting two adjacent layers of base cloth into a whole through the sizing material to form a finished product of the annular conveying belt.
And S33, removing the annular laminated base cloth from the first heating device and the sizing material applying device to obtain a finished annular conveying belt.
Optionally, the size application device comprises a padding device;
in the step S31, the annular laminated base fabric is sleeved on the second conveyor belt supporting device of the padding device, and the padding device pads the annular laminated base fabric with the sizing material.
Optionally, the size application device comprises a film delivery device;
in step S31, the film sending device sends out the top film to the top of the annular laminated base fabric, and the film sending device sends out the bottom film to the bottom of the annular laminated base fabric, the bottom film and the top film moving along with the annular laminated base fabric.
Optionally, the size applying device comprises a padding device and a film sending device;
in the step S31, an annular laminated base fabric is sleeved on a second conveyor belt supporting device of a padding device, the padding device pads the base fabric with a sizing material, then, a surface film is sent out to the surface layer of the annular laminated base fabric by the film sending device, a bottom film is sent out to the bottom layer of the annular laminated base fabric by the film sending device, and the bottom film and the surface film move along with the annular laminated base fabric.
Optionally, the step S31 further includes:
and after the padding device pads the annular laminated base cloth with sizing materials, the annular laminated base cloth enters a second heating device and is heated by the second heating device for a preset time.
Optionally, the sewing equipment is a stitch knitting machine, a quilting machine, a pleating machine, a spunlace machine, a needle punching machine or an ultrasonic welding sewing mechanism;
the first heating device is a flat plate type intermittent hot pressing device or a heating wheel type continuous hot pressing device.
Optionally, the base fabric is one or more of glass fiber cloth, carbon fiber, aramid 1313, aramid 1414, nylon cloth, polyester cloth, and knitted cloth or woven cloth or non-woven cloth of cotton cloth.
The sizing material comprises one or more of polytetrafluoroethylene, polyperfluoroethylene sizing material, hot melt adhesive, silica gel, TPU, PVC, polyurethane and polypropylene.
Optionally, the base fabric is a plain woven fabric of glass fiber cloth;
the weight of the plain weaving cloth of the glass fiber cloth is 30-300g/m2The thickness is 0.1-0.5mm, and the number of the layers of the annular laminated base cloth is 2-10;
the sizing material is polytetrafluoroethylene suspension with solid content of 40-70%, and the weight of the dried polytetrafluoroethylene suspension is 10-200g/m2。
According to the technical scheme, the embodiment of the invention has the following advantages:
in this embodiment, the base cloth forms annular base cloth layer after being twined many times, then starts to make up equipment, makes up equipment and carries out stitch-bonding or quilting or sew with long stitches the embroidery operation to above-mentioned annular base cloth layer for each layer base cloth in the annular base cloth layer links together through the sewing thread, has effectively solved the conveyer belt in bonding process, appears misplacing each other or the technical problem that breaks away from between the layer appears between the adjacent two-layer base cloth in the annular base cloth layer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a manufacturing process of a large-circumference seamless endless conveyor belt according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a sewing device and a first conveyor belt supporting device in a large-circumference seamless endless conveyor belt manufacturing process according to an embodiment of the present invention;
fig. 3 is a schematic view of another perspective structure of a sewing mechanism and a first conveyor belt supporting device in a large-circumference seamless endless conveyor belt manufacturing process according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a position relationship between a first heating device and a glue applying device in a process for manufacturing a large-circumference seamless endless conveyor belt according to an embodiment of the present invention;
fig. 5 is a schematic view illustrating a positional relationship between a first heating device and an auxiliary heating device in a process for manufacturing a large-circumference seamless endless conveyor belt according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of an endless base fabric layer in a process for manufacturing a large-circumference seamless endless conveyor belt according to an embodiment of the present invention;
FIG. 7 is an enlarged view of the structure at A in FIG. 5;
FIG. 8 is an enlarged view of the structure at B in FIG. 5;
FIG. 9 is a schematic structural diagram of a flat plate type intermittent hot-pressing device as a first heating device in a process for manufacturing a large-circumference seamless endless conveyor belt according to an embodiment of the present invention;
illustration of the drawings: a base fabric 1; a trailing end 101 of the endless base fabric layer; a face layer 102 of a ring-shaped laminated base fabric; a bottom layer 103 of a ring-shaped laminated base fabric; a toe portion 104 of the annular scrim layer; a sewing device 2; a nose section 201; a head 2011; a bottom shuttle beam portion 202; a bottom shuttle 2021; a first support wheel 3; a conveyor belt tension/length adjusting device 4; a frame 5; a heating wheel 6; a pinch roller 7; a second support wheel 8; a first scraper 9; a first bottom wheel 10; a slurry 11; a trough 12; a roll 13; a sizing material 14; an endless press belt 15; an auxiliary heating device 16; an upper plate 17; a lower plate 18; an electric heating tube, an electric heating sheet or an electric heating wire 19; a pressure device 20 of a flat plate type intermittent heating device.
Detailed Description
The embodiment of the invention discloses a manufacturing process of a large-circumference seamless annular conveying belt, which is used for solving the problem that the conventional circular weaving machine cannot produce the large-circumference annular conveying belt due to circumference limitation.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 9, the manufacturing process of the large-circumference seamless annular conveyor belt provided in the present embodiment is performed by a conveyor belt manufacturing apparatus, specifically, the conveyor belt manufacturing apparatus includes a frame 5, a sewing apparatus 2, a first conveyor belt supporting device, a second conveyor belt supporting device, a glue applying device, and a first heating device;
the manufacturing process of the large-circumference seamless annular conveyer belt in the embodiment specifically comprises the following steps:
s1, winding and sleeving the base cloth to a preset number of layers to form an annular base cloth layer;
s2, starting the sewing equipment 2, and carrying out stitch-bonding, quilting or embroidering operation on the annular base cloth layer which is finished in the step S1, so that all layers of base cloth in the annular base cloth layer are connected together through sewing threads to obtain annular laminated base cloth;
s3, detaching the annular laminated base cloth from the sewing equipment 2 to obtain an annular conveying belt finished product;
in step S3, the head portion 201 or the bottom shuttle beam portion 202 of the sewing apparatus 2 is detachably designed or the head 2011 or/and the bottom shuttle beam portion 202 of the sewing apparatus 2 is/are designed to be cantilevered;
the sewing equipment 2 can be a stitch knitting machine, a quilting machine, a pleating machine, a spunlace machine, a needle machine or an ultrasonic welding sewing mechanism;
specifically, the quilting machine is a single-head or multi-head numerical control quilting machine, a head part 201 or/and a bottom shuttle beam part 202 of the quilting machine are detachably designed, the head part 201 of the quilting machine is arranged above the quilting machine, the bottom shuttle beam part 202 is arranged below the head part 201, and a bottom shuttle 2021 is arranged on the bottom shuttle beam;
in step S3, the operation of the quilting machine is stopped, the head portion 201 of the quilting machine or/and the bottom shuttle beam portion 202 of the quilting machine are removed, and the ring-shaped laminated base fabric is taken out.
Further, the following steps are also included between step S1 and step S2:
fixing the head end part and the tail end part of the annular base cloth layer in a manner of sewing by adopting a manual sewing or sewing device or bonding and fixing by using an adhesive, fixing two adjacent layers of base cloth in the annular base cloth layer in a manner of sewing by adopting a manual sewing or a handheld sewing machine or fixing by using an adhesive, avoiding dislocation of two adjacent layers of base cloth in the annular laminated base cloth in the subsequent process, and then starting the sewing device 2 for sewing operation.
Further, in the step S3, after removing the loop laminated base fabric from the sewing apparatus, the method further includes the steps of:
s31, sleeving the annular laminated base cloth on a second conveying belt supporting device of a glue applying device, wherein the glue applying device applies glue to the annular laminated base cloth;
and S32, guiding the annular laminated base cloth with the sizing material into a first heating device through the second conveying belt supporting device, heating the annular laminated base cloth by the first heating device, melting the heated sizing material, and connecting two adjacent layers of base cloth into a whole through the sizing material to form a finished product of the annular conveying belt.
And S33, removing the annular laminated base cloth from the first heating device and the sizing material applying device to obtain a finished annular conveying belt.
The base fabrics of the layers of the annular laminated base fabric can be tightly connected together in the manner, so that the quality of the finished annular conveying belt is ensured.
In this embodiment, the base cloth forms annular base cloth layer after being twined many times, then starts to make up equipment, makes up equipment and carries out stitch-bonding or quilting or sew with long stitches the embroidery operation to above-mentioned annular base cloth layer for each layer base cloth in the annular base cloth layer links together through the sewing thread, has effectively solved the conveyer belt in bonding process, appears misplacing each other or the technical problem that breaks away from between the layer appears between the adjacent two-layer base cloth in the annular base cloth layer.
The base cloth is made thin as possible, and the thickness difference between the head and the tail of the base cloth and other parts is not obvious as the base cloth is thinner, so that the base cloth which is as thin as possible can be wound for a plurality of times to achieve the same thickness and strength, and then the base cloth is connected into a whole through the sewing thread to obtain the conveyer belt with the same thickness and strength.
Further, the step S1 specifically includes:
leading out the base cloth, leading the base cloth into the sewing equipment from an inlet of the sewing equipment under the guidance of the first conveying belt supporting device, and leading the base cloth to detour back to the inlet of the sewing equipment from an outlet of the sewing equipment through the guidance of the first conveying belt supporting device, and repeating the operation to form at least two layers of annular base cloth layers sleeved in a laminating way.
In addition to the winding method, other winding methods may be used to form the base fabric into the annular base fabric layer, for example, before sewing, the base fabric is manually wound and sleeved to form a multi-layer annular base fabric layer, and in this way, the manually wound annular base fabric layer needs to be sleeved into the sewing device before the sewing device 2 is started.
Further, the base cloth may be a base cloth already coated with sizing material, such as glass fiber cloth coated with polytetrafluoroethylene or polyperfluoroethylene in advance, and the finished product of the endless conveyor belt is obtained in steps S1-S3.
Further, the base fabric is one or more of glass fiber cloth, carbon fiber, aramid 1313, aramid 1414, nylon cloth, polyester cloth, and knitted cloth, woven cloth or non-woven cloth of cotton cloth.
The sizing material comprises one or more of polytetrafluoroethylene, polyperfluoroethylene sizing material, hot melt adhesive, silica gel, TPU, PVC, polyurethane and polypropylene.
Further, the base cloth is a plain cloth of glass fiber cloth;
the weight of the plain weaving cloth of the glass fiber cloth is 30-300g/m2The thickness is 0.1-0.5mm, and the number of the layers of the annular laminated base cloth is 2-10;
the sizing material is polytetrafluoroethylene suspension with solid content of 40-70%, and the weight of the dried polytetrafluoroethylene suspension is 10-200g/m2。
Further, the first conveyor belt supporting device comprises a plurality of first supporting wheels 3, and the plurality of first supporting wheels 3 are distributed in front of and behind the sewing equipment 2;
it should be noted that the plurality of first support wheels 3 support and guide the base fabric together, the base fabric is arranged in a winding manner, an annular base fabric layer is formed under the support of the plurality of first support wheels 3, the winding path of the annular base fabric layer can be changed according to different position designs of the first support wheels 3, so that the circumference of the annular base fabric layer is increased or reduced, then the quilting machine is started, the quilting needle drives the quilting line to sew in the thickness direction of the annular base fabric layer, the annular base fabric layer advances at a preset speed, and the quilting line of the quilting machine connects the annular base fabric layer into a whole to form the annular laminated base fabric. The present embodiment does not limit the specific position and number of the first support wheels 3. Through the design, the circumference of the annular laminated base cloth can be effectively changed, and the problem that the large-circumference annular conveying belt cannot be produced due to the limitation of the circumference of the circular weaving machine is effectively solved.
The second belt support means comprises a plurality of second support wheels 8;
it should be noted that the number and the position of the plurality of second supporting wheels 8 need to be designed according to the specific circumference of the annular laminated base fabric, and the specific position and the number of the second supporting wheels 8 are not limited in this embodiment.
Further, the sizing application device comprises a padding device;
in the step S31, the annular laminated base fabric is sleeved on the second conveyor belt supporting device of the padding device, and the padding device pads the annular laminated base fabric with the sizing material.
Through the design, the glue can fully permeate into the internal tissue structure of the base cloth, so that two adjacent layers of base cloth are better combined together.
The padding device includes two rollers 13 that are mutually padded and a trough 12 loaded with sizing material, and specifically, an impregnation wheel and a guide wheel for guiding the annular laminated base fabric are further arranged in the trough 12;
the second supporting wheels 8, the impregnation wheel, the guide wheel and the roller 13 support the annular laminated base cloth together, and the length or the tension of the annular laminated base cloth is adjusted by the conveying belt tension/length adjusting device 4 arranged on the second conveying belt supporting device. Before production, the second supporting wheel 8, the impregnation wheel, the guide wheel and the roller 13 are firstly removed, or only one end of the second supporting wheel 8, the guide wheel and the roller 13 is removed, the multilayer annular base cloth obtained in the above steps is sleeved into the second supporting wheel 8, the impregnation wheel, the guide wheel and the roller 13 according to the process flow, then the second supporting wheel 8, the impregnation wheel, the guide wheel and the roller 13 are fixed on a frame 5 of a conveyer belt manufacturing device, the prepared sizing material is injected into a material groove 12, a power device is started, parameters such as pressure, speed, temperature and the like of the roller 13 are set, the multilayer annular base cloth moves forwards under the driving of the power device, a pressing device of the roller 13 is started, redundant sizing material carried by the annular laminated base cloth is extruded by the roller 13, when the annular laminated base cloth passes through a first heating device, the sizing material carried by the annular laminated base cloth is cured at high temperature and under the pressure, the rubber material and the base cloth are bonded into a whole to obtain a finished product of the annular conveying belt;
or the rubber material applying device is provided with an edge cutting device, and redundant edges of the conveying belt are cut off according to the size requirement, or the annular conveying belt is taken out and cut as required in the subsequent working procedures.
Further, the sizing material application device comprises a film delivery device;
in step S31, the film sending device sends out the top film to the top of the annular laminated base fabric, and the film sending device sends out the bottom film to the bottom of the annular laminated base fabric, the bottom film and the top film moving along with the annular laminated base fabric.
The film sending device comprises a surface film sending device and a bottom film sending device;
the surface layer film sending device and the bottom layer film sending device respectively comprise a guide wheel, a material penetrating shaft for uncoiling and supporting a film and a fixing device for fixing the material penetrating shaft;
the surface layer film sending device is located above an inlet of the first heating device and used for sending out the surface layer film, the surface layer film is rolled out from a material penetrating shaft and guided by a guide wheel to enter the first heating device along with the base cloth, and under the action of high temperature and pressure, the surface layer film is adhered to the outer surface of the annular laminated base cloth to form a smooth outer working surface of the conveying belt and play a role in protecting a tail end interface of the base cloth and covering a seam at the tail end of the base cloth.
The bottom film sending device is positioned below an inlet of the first heating device and used for sending out a bottom film, the bottom film is rolled out from a material penetrating shaft, guided by a guide wheel and enters the first heating device along with the base cloth, and under the action of high temperature and pressure, the bottom film is adhered to the inner surface of the annular laminated base cloth to form a smooth inner working surface of the conveying belt and play a role of protecting an interface at the starting end of the base cloth and covering a seam at the tail end of the base cloth.
The film is a teflon (PTFE) film, cold plasma is adopted to treat the surface of the PTFE film in advance, the free energy of the surface of the film is improved, the thermal bonding effect of a film material and glass fibers is enhanced, and the high-temperature gelatinization of the surface of the film is reduced by controlling treatment parameters under the condition of effective bonding. Or coating different high molecular polymers on the surface of the PTFE and drying the PTFE to ensure that the surface of the PTFE in a high-temperature state for a long time has higher bonding fastness and the performances of strength, folding resistance, wear resistance and the like in an acidic or alkaline environment are not influenced; improves the flexibility of PTFE; preferably, the modifier is a silane coupling agent.
Additionally, the size application device may include a padding device and a film delivery device;
in the step S31, an annular laminated base fabric is sleeved on a second conveyor belt supporting device of a padding device, the padding device pads the base fabric with a sizing material, then, a surface film is sent out to the surface layer of the annular laminated base fabric by the film sending device, a bottom film is sent out to the bottom layer of the annular laminated base fabric by the film sending device, and the bottom film and the surface film move along with the annular laminated base fabric.
Further, the step S31 further includes:
and after the padding device pads the annular laminated base cloth with sizing materials, the annular laminated base cloth enters a second heating device and is baked for a preset time by the oven.
It should be noted that the second heating device is an electric heating oven, a steam heating oven or a heat conducting oil heating oven, the annular laminated base cloth enters the padding device, the annular laminated base cloth is padded by the two rollers 13 after being soaked in the sizing material in the trough 12, the padded base cloth enters the second heating device, and the second heating device is mainly used for pre-baking the padded base cloth before entering the first heating device, and discharging water and low-temperature decomposition components in the sizing material.
The second heating device is arranged between the padding device and the first heating device, and the oven is an electric heating oven or a steam heating oven or a heat conduction oil heating oven.
Further, the step S31 further includes:
after the sizing material applying device applies the sizing material to the base cloth, the first blade coating device blade coats the sizing material or sizing material on the outer surface of the annular laminated base cloth.
The first blade coating device is arranged in front of the first heating device;
the first blade coating device comprises a first bottom wheel 10 and a first scraper 9;
the first scraper 9 is arranged above the first bottom wheel 10, a plurality of layers of annular base cloth processed by the sizing material applying device pass through the space between the first bottom wheel 10 and the first scraper 9, the knife edge of the first scraper 9 is arranged towards the outer surface of the annular laminated base cloth, a gap is reserved between the first scraper 9 and the annular laminated base cloth, and the first scraper 9 is used for scraping sizing material on the outer surface of the plurality of layers of annular base cloth when the annular laminated base cloth passes through the space between the first bottom wheel 10 and the first scraper 9.
The slurry is heated and solidified by the first heating device to obtain the surface layer of the conveyer belt.
After finishing the top layer preparation of conveyer belt, operating personnel overturns the bottom and the surface course of conveyer belt, then overlaps to establish on the equipment, and the bottom surface of the range upon range of base cloth of annular is through first knife coating device knife coating, and along with equipment operation again, gets into first heating device, and coating is heated the solidification by first heating device, obtains the bottom of conveyer belt.
The slurry is coated at the bottom of the conveying belt, so that the friction coefficient of the conveying belt is low, and the phenomenon that the conveying belt is easy to slip in the using process is reduced.
The bottom layer and the surface layer of the conveying belt can be turned over by hands, and a second blade coating device can be arranged in the conveying belt forming mechanism;
the second blade coating device is arranged between the padding device and the first heating device;
the second blade coating device comprises a second bottom wheel and a second scraper;
the second scraper set up in the top of second return pulley, the range upon range of base cloth of annular after the padding is followed the second return pulley with pass between the second scraper, the edge of a knife of second scraper sets up towards the bottom one deck base cloth in the range upon range of base cloth of annular, leave the clearance between second scraper and the range upon range of base cloth of annular, the second scraper is used for when the range upon range of base cloth of annular passes the second return pulley with between the second scraper, to the bottom one deck base cloth blade coating thick liquids in the range upon range of base cloth of annular.
It should be noted that, when the apparatus is operated, the excess coating is scraped off, and a uniform coating layer is obtained on the bottom surface of the annular laminated base fabric, and then the annular laminated base fabric is operated with the apparatus, enters the heating wheel 6, and is heated and cured by the first heating device, so as to obtain the bottom layer of the conveyor belt.
The slurry is made of teflon slurry or hot melt adhesive or silica gel or thermoplastic polyurethane or PVC or polyurethane or polypropylene.
Further, the first heating device is an electric heating oven, and the first heating device at least comprises a heat insulation board, an electric heating pipe support, a temperature measuring instrument, a temperature controller, a left support frame, a right support frame and a transverse connecting rod connected with the left support frame and the right support frame;
the electric heating tube is fixed on an electric heating tube support, the electric heating tube support is fixed on a transverse connecting rod, the heat-insulating plate is detachably fixed on the left support frame, the right support frame and the transverse connecting rod, one end of the transverse connecting rod is fixedly connected with the rack, and the other end of the transverse connecting rod is arranged in a hanging mode or is detachably connected with the rack.
Besides, the first heating device can also be a flat plate type intermittent hot-pressing device or a heating wheel type continuous hot-pressing device.
The flat plate type intermittent hot-pressing device comprises an upper flat plate 17 and a lower flat plate 18, one end of the lower flat plate 18 is fixed on the rack 5 of the conveyer belt manufacturing equipment, the other end of the lower flat plate is arranged in a hanging manner or detachably connected with the rack 5 of the conveyer belt manufacturing equipment, a pressure device of the flat plate type intermittent hot-pressing device is fixed above the rack 5 of the conveyer belt manufacturing equipment, the upper flat plate 17 and the lower flat plate 18 can be in press fit in a clutching manner through the pressure device of the flat plate type intermittent hot-pressing device, electric heating tubes, electric heating plates or electric heating wires are arranged inside the working surfaces of the upper flat plate 17 and the lower flat plate 18, and the pressure device of the flat plate type intermittent hot-pressing device is an air pressure device or a hydraulic device;
it should be noted that the annular laminated base cloth enters the working surface between the upper flat plate 17 and the lower flat plate 18 under the guidance of the second support wheel 8, when the base cloth reaches the working surface between the upper flat plate 17 and the lower flat plate 18 for the second time, the pressure device is started, the upper flat plate 17 descends, two or more layers of base cloth are pressed between the upper flat plate 17 and the lower flat plate 18, the upper and lower edges are respectively heated by the upper flat plate 17 and the lower flat plate 18, the sizing materials carried by the two or more layers of base cloth are melted through preset pressure, temperature and pressing time, and then the two or more layers of base cloth are connected together through the sizing materials.
Because the widths of the upper working surface and the lower working surface of the flat plate type intermittent heating device in the running direction of the base cloth are limited, after the preset pressurizing time is reached, the upper flat plate 17 is lifted, the base cloth is manually moved or electrically driven by a motor to move forward by the distance of the widths of the working surfaces of the upper flat plate 17 and the lower flat plate 18 in the running direction of the base cloth, the upper flat plate 17 is lowered again, two or more layers of the base cloth are heated and pressurized, the process is intermittently repeated until the preset number of the base cloth layers is reached, and all the base cloth is heated and pressurized at least once in the running direction, so that the two adjacent layers of the base cloth are bonded together by the sizing material.
The heating wheel type continuous hot pressing device comprises a heating wheel 6, a pressure device of the heating wheel type continuous hot pressing device is arranged on the outer circular surface of the heating wheel 6, and the pressure device of the heating wheel type continuous hot pressing device is a pressing wheel 7 or/and an annular pressing belt 15.
It should be noted that after multiple heating of the heating wheel 6 and multiple pressing of the pressing wheel 7, multiple layers of base fabrics are bonded together to form an annular conveying belt, specifically, the pressing wheel 7 may be connected to a driving device such as a cylinder, and the driving device may drive the pressing wheel 7 to intermittently press against the surface of the heating wheel 6, so that two adjacent layers of base fabrics can be better bonded through the glue.
Further, the frame 5 of the conveyor belt manufacturing apparatus of the present embodiment is mounted with a driving mechanism, which is connected with the heating wheel 6 to drive the heating wheel 6 to rotate relative to the frame 5 of the conveyor belt manufacturing apparatus.
Optionally, the drive mechanism is a servo motor.
Further, the annular pressing belt 15 is sleeved on the heating wheel 6 and the second supporting wheel 8, a working portion of the annular pressing belt 15 is wrapped on an outer side wall of the heating wheel 6, the pressing wheel 7 is located on an inner side surface of the annular pressing belt 15, the annular pressing belt 15 is pressed on an inner side surface of the multi-layer annular base cloth, and the annular pressing belt 15 and the heating wheel 6 apply pressure to the multi-layer annular base cloth together in a thickness direction of the multi-layer annular base cloth, so that two adjacent layers of annular base cloth in the multi-layer annular base cloth are bonded.
It should be noted that, through the above design, the multilayer annular base cloth processed by the sizing material applying device can be subjected to more pressure in the thickness direction thereof, so that the base cloths in the multilayer annular base cloth are better bonded together.
Further, the number of the heating wheels 6 is plural, the plural heating wheels 6 are sequentially arranged on the frame 5 of the conveyor belt manufacturing apparatus, and the plural heating wheels 6 sequentially perform front and back heating operations on the annular laminated base fabric.
Furthermore, the first supporting wheel 3, the second supporting wheel 8, the pressing wheel 7, the roller 13, the first bottom wheel 10, the first scraper 9, the second bottom wheel and the second scraper are all provided with cantilever structures, and the working ends of the cantilever structures are arranged in a suspended mode, so that the annular laminated base cloth, the annular pressing belt 15 and the finished conveying belt products can be sleeved in and taken out conveniently during production.
The working end of the cantilever structure is provided with a plurality of movable support frames, the movable support frames are movably or detachably connected with the main body structure, the first scraper 9, the second scraper, the first bottom wheel 10, the second bottom wheel, the roller 13, the pinch roller 7 and the support wheels are connected with the movable support frames respectively located, for example, the pinch roller 7 is connected with the movable support frames of the pinch roller 7, so that when the movable support frames are disassembled, the working end of the pinch roller 7 can be arranged in a hanging manner, and the base cloth, the annular press belt 15 and the conveying belt can be conveniently sleeved and taken out during production.
Further, the right ends of the first supporting wheel 3, the roller 13 and the second supporting wheel 8 are arranged in a suspended mode, the left ends of the first supporting wheel 3, the roller 13 and the second supporting wheel 8 are respectively provided with two bearings, the two bearings are connected with the rack 5 through bearing seats, and the first supporting wheel 3, the roller 13 and the second supporting wheel 8 are respectively supported through the two bearings.
Furthermore, the right ends of the first supporting wheel 3, the roller 13 and the second supporting wheel 8 are provided with a support arm capable of swinging, the support arm capable of swinging is movably connected with the rack 5, the support arm capable of swinging is connected with a bearing, and the bearing is rotatably connected with the right ends of the first supporting wheel 3, the roller 13 and the second supporting wheel 8 in the production process.
Further, the left side and the right side of the conveyer belt manufacturing equipment of the embodiment are respectively provided with a group of edge cutting devices, each edge cutting device comprises a knife rest, an edge cutting knife, a motor for driving a blade, and a left adjusting device and a right adjusting device, the blade is fixed on the motor, and the motor is fixed on the knife rest.
Through the arrangement of the edge cutting device, the edges of the annular laminated base cloth can be cut, so that the edges of the annular laminated base cloth are smoother.
Further, in order to prevent the base cloth from deviating, the first conveying belt supporting device and the second conveying belt supporting device further comprise conveying belt deviation rectifying devices, and each conveying belt deviation rectifying device comprises a guide wheel, a fixing seat and a deviation rectifying power device.
The deviation rectifying power device is a manual type or photoelectric induction type electric or pneumatic or oil pressure type power device. Through the arrangement of the deviation correcting device, the edge of the base cloth can be corrected, so that the base cloth cannot fall off from the pinch roller 7.
Further, the conveyer belt manufacturing equipment of this embodiment still includes conveyer belt length adjusting device, through adjusting the position of the guide pulley of conveyer belt length adjusting device in order to adjust the length that changes the conveyer belt.
In addition to the above, the present embodiment can also make the conveyor belts of different lengths by increasing or decreasing the number of the first supporting wheels 3.
Further, the conveyor belt manufacturing apparatus in this embodiment further includes an auxiliary heating device 16, where the auxiliary heating device 16 is disposed on an outer side wall of the heating wheel 6 to heat a side surface of the annular laminated base fabric away from the heating wheel 6;
the auxiliary heating device 16 is an electric heating auxiliary heating device 16 or a steam auxiliary heating device 16 or a heat-conducting oil auxiliary heating device 16.
While the present invention has been described in detail with reference to the drawings, it is to be understood that the same is by way of illustration and example only and is not to be taken as a limitation, the scope of the invention should be limited only by the appended claims.
Claims (10)
1. A manufacturing process of a large-circumference seamless annular conveyer belt is characterized by comprising the following steps:
s1, winding and sleeving the base cloth to a preset number of layers to form an annular base cloth layer;
s2, starting sewing equipment, and performing stitch-bonding, quilting or embroidering operation on the annular base cloth layer after the step S1 is completed, so that the base cloth layers in the annular base cloth layer are connected together through sewing threads to obtain annular laminated base cloth;
and S3, detaching the annular laminated base cloth from the sewing equipment to obtain the finished annular conveying belt.
2. The process for manufacturing a large-circumference seamless endless conveyor belt according to claim 1, wherein the step S1 specifically includes:
leading out the base cloth, leading the base cloth into the sewing equipment from an inlet of the sewing equipment under the guidance of the first conveying belt supporting device, and leading the base cloth to detour back to the inlet of the sewing equipment from an outlet of the sewing equipment through the guidance of the first conveying belt supporting device, and repeating the operation to form at least two layers of annular base cloth layers sleeved in a laminating way.
3. The process of claim 1, further comprising the steps of, after removing the endless laminated base fabric from the sewing apparatus:
s31, sleeving the annular laminated base cloth on a second conveying belt supporting device of a glue applying device, wherein the glue applying device applies glue to the annular laminated base cloth;
and S32, guiding the annular laminated base cloth with the sizing material into a first heating device through the second conveying belt supporting device, heating the annular laminated base cloth by the first heating device, melting the heated sizing material, and connecting two adjacent layers of base cloth into a whole through the sizing material to form a finished product of the annular conveying belt.
And S33, removing the annular laminated base cloth from the first heating device and the sizing material applying device to obtain a finished annular conveying belt.
4. A process for manufacturing a large circumference endless conveyor belt according to claim 3, characterised in that said size applying means comprises padding means;
in the step S31, the annular laminated base fabric is sleeved on the second conveyor belt supporting device of the padding device, and the padding device pads the annular laminated base fabric with the sizing material.
5. A process according to claim 3, wherein said size application means comprises film delivery means;
in step S31, the film sending device sends out the top film to the top of the annular laminated base fabric, and the film sending device sends out the bottom film to the bottom of the annular laminated base fabric, the bottom film and the top film moving along with the annular laminated base fabric.
6. A process for manufacturing a large circumference endless conveyor belt according to claim 3, wherein said size applying means comprises padding means and film delivery means;
in the step S31, an annular laminated base fabric is sleeved on a second conveyor belt supporting device of a padding device, the padding device pads the base fabric with a sizing material, then, a surface film is sent out to the surface layer of the annular laminated base fabric by the film sending device, a bottom film is sent out to the bottom layer of the annular laminated base fabric by the film sending device, and the bottom film and the surface film move along with the annular laminated base fabric.
7. The large circumference seamless endless conveyor belt manufacturing process according to claim 4 or 6, wherein the step S31 further includes:
and after the padding device pads the annular laminated base cloth with sizing materials, the annular laminated base cloth enters a second heating device and is heated by the second heating device for a preset time.
8. The process for manufacturing a large-circumference seamless annular conveying belt according to claim 1, wherein the sewing equipment is a stitch-knitting machine, a quilting machine, a pleating machine, a spunlace machine, a needle punching machine or an ultrasonic welding sewing mechanism;
the first heating device is a flat plate type intermittent hot pressing device or a heating wheel type continuous hot pressing device.
9. The process for manufacturing a large-circumference seamless annular conveyer belt according to claim 1, wherein the base fabric is one or more of glass fiber cloth, carbon fiber, aramid 1313, aramid 1414, nylon cloth, polyester cloth, knitted fabric of cotton cloth, woven fabric or non-woven fabric.
The sizing material comprises one or more of polytetrafluoroethylene, polyperfluoroethylene sizing material, hot melt adhesive, silica gel, TPU, PVC, polyurethane and polypropylene.
10. A process for manufacturing a large circumference endless conveyor belt according to claim 3, wherein said base fabric is a plain weave fabric of glass fiber cloth;
the weight of the plain weaving cloth of the glass fiber cloth is 30-300g/m2The thickness is 0.1-0.5mm, and the number of the layers of the annular laminated base cloth is 2-10;
the sizing material is polytetrafluoroethylene suspension with solid content of 40-70%, and the weight of the dried polytetrafluoroethylene suspension is 10-200g/m2。
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| CN202110818306.8A CN113442479A (en) | 2021-07-20 | 2021-07-20 | Manufacturing process of large-circumference seamless annular conveying belt |
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| CN202110818306.8A CN113442479A (en) | 2021-07-20 | 2021-07-20 | Manufacturing process of large-circumference seamless annular conveying belt |
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| CN113442479A true CN113442479A (en) | 2021-09-28 |
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