Calendering device for conveying belt production

Abstract

The invention discloses a conveyer belt production calendering device which comprises a base, a preheating assembly, a calender body, an edge cutting assembly and a cooling assembly are sequentially arranged on the base, the preheating assembly comprises a preheating box, a calender hood and two infrared heaters, and the preheating box and the calender hood form a loop through a pipeline. An air inlet pipe and an air return pipe of the pipeline are respectively provided with a filter box and a fan, the preheating assembly is used for dedusting, preheating and heating a prepreg tape core, the calender is used for covering the prepreg tape core with glue, the edge cutting assembly is used for cutting a conveyor belt blank and carrying out edge pressing on the conveyor belt blank, and finally the conveyor belt blank is obtained through cooling. Heat generated by the calender is recycled, energy consumption is saved, impregnation of the prepreg tape core is completely molten through preheating and heating, dust on the surface of the prepreg tape core can be taken away while the tape core is preheated through circulation formed by the pipeline, and pressing of the tape core and the sizing material is more compact and stable.

Description

Technical Field

[0001] The present invention relates to the field of conveyor belt production equipment, and particularly to a calendering device for conveyor belt production. Background Art

[0002] In the production and manufacturing process of conveyor belts, a calendering process is required. Commonly used calenders include two-roll, three-roll, and four-roll calenders, which can calender the rubber compound into cover rubber and base rubber with uniform thickness after preheating, or directly calender the rubber compound and the fabric tensile layer into a conveyor belt semi-finished product.

[0003] Conveyor belts have a variety of application scenarios. For example, in underground coal mines, generally, integrally woven belt cores are used. The bonding performance between the belt cores of some special fabrics and the rubber compound is limited, and the phenomenon of conveyor belt delamination may occur during use. Therefore, the fabric belt is pre-impregnated with a rubber compound to obtain a pre-impregnated belt. During calendering, it is calendered together with the hot rubber compound through heating by calender rolls to strengthen the firmness between the belt core and the cover rubber.

[0004] However, there are many dust and sundries in the conveyor belt processing workshop, and dust is likely to accumulate on the pre-impregnated belt. When the pre-impregnated belt passes through the calender and is pressed together with the rubber compound, only the calender rolls and the rubber compound are heated, and the melting effect is limited, and the phenomenon that the pre-impregnated belt is not completely melted is likely to occur. These two reasons will affect the bonding performance between the pre-impregnated belt and the rubber compound; in addition, traditional calenders all use fixed cutters to cut the edge materials by relying on the forward transmission of the belt blank. When the belt blank is too thick, the cutting of the materials is not stable and flat enough, which is also a problem existing currently. Summary of the Invention

[0005] In order to address the above deficiencies, the present invention provides a calendering device for conveyor belt production.

[0006] The present invention is realized through the following technical solutions:

[0007] A calendering device for conveyor belt production includes a base, on which a preheating component, a calender body, a trimming component, and a cooling component are sequentially arranged; the preheating component includes a preheating box, a calender hood, and two infrared heaters. The calender hood is fixed on the calender body, the preheating box is fixed on the base, the preheating box and the calender hood form a loop through a pipeline, and a filter box and a fan are respectively arranged on the air inlet pipe and the air return pipe of the pipeline. The infrared heaters are fixed on the calender body to heat the pre-impregnated belt core entering the calender rolls; the trimming component includes a trimming roll and a support roll, the trimming roll and the support roll are arranged on the base through brackets, and a set of adjustable cutting knife assemblies are respectively arranged at both ends of the trimming roll for cutting the conveyor belt blank and pressing the edge of the blank; the preheating component performs dust removal, preheating, and heating on the pre-impregnated belt core, and the calender applies cover rubber to the pre-impregnated belt core, and through cutting and cooling, a conveyor belt blank is obtained.

[0008] Further optimized, the two infrared heaters are respectively located on the upper side and the lower side of the prepreg core and face the prepreg core.

[0009] Further optimized, a plurality of through holes are formed on both sides of the preheating box, an auxiliary roller is arranged in the preheating box, and the prepreg core passes through the middle height of the through holes of the preheating box via the auxiliary roller.

[0010] Further optimized, each cutter assembly includes a cutter, a hemming roller and two locking bolts. The middle part of the cutting roller is a supporting part, and threaded sections are arranged at both ends of the cutting roller. The cutter, the hemming roller and the two locking bolts are threadedly connected to the threaded sections. The cutter and the hemming roller are located between the two locking bolts, and the hemming roller is located inside the cutter.

[0011] Further optimized, the hemming roller and the cutter are fixedly connected. The outer diameter of the hemming roller is larger than the outer diameter of the supporting part of the cutting roller, and the outer diameter of the locking bolt is smaller than the outer diameter of the supporting part of the cutting roller.

[0012] Further optimized, the adjustment distance of each cutter assembly is less than 5 cm.

[0013] Further optimized, the cutter is in contact with the supporting roller, a cutting lip is arranged on the supporting roller, and a plastic washer is arranged on the cutting lip.

[0014] Further optimized, two sets of blanking conveyor belts are arranged below the edge cutting assembly. The blanking conveyor belts are respectively located on both sides of the conveyor belt blank, the blanking conveyor belts are inclined, and a waste box is placed at the tail.

[0015] Further optimized, the cooling assembly includes a plurality of cooling rollers arranged in sequence.

[0016] Further optimized, a deviation rectifying device and a tensioning roller are arranged in front of the preheating box.

[0017] The beneficial effects of the present invention are as follows:

[0018] The present invention recycles the heat generated at the calender. A preheating box is arranged in front of the calender to preheat the prepreg core, and is heated in cooperation with the infrared heater, saving energy consumption. Preheating and heating make the impregnating glue of the prepreg core completely melted, making the pressing of the core and the rubber compound more dense and stable. The calender hood is connected to the preheating box through a circulation pipeline, which is not one-way, so that the heat flow can circulate continuously, and the heat of the calender itself will not be greatly reduced, avoiding the cooling and solidification of the rubber compound; while the pipeline forms a circulating flow to preheat the core, it can also take away the dust on the surface of the prepreg core. Two dust removal and filtration boxes are arranged on the pipeline to collect dust, further enhancing the bonding performance between the core and the rubber compound.

[0019] In the present invention, an independent trimming component is also provided to cut off the edge materials on both sides of the strip blank. While cutting the materials, the pressing roller on one side of the cutting knife presses the strip blank that has not yet cooled down, making both sides of the conveyor belt more stable and with better performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present invention.

[0021] Figure 2 It is a partial structural schematic diagram of the present invention when viewed from above.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the cutting knife component of the present invention.

[0023] Figure 4 is Figure 3 an enlarged schematic diagram of part A in

[0024] Figure 5 It is a three-dimensional structural schematic of the cutting knife component of the present invention Figure 2 .

[0025] In the figure: 1. Preheating component; 11. Preheating box; 12. Through hole; 13. Pipeline; 14. Filter box; 15. Fan; 17. Infrared heater; 2. Calender body; 21. Calender hood;

[0026] 3. Trimming component; 31. Trimming roll; 311. Support part; 312. Threaded section; 313. Locking bolt; 314. Cutting knife; 315. Pressing roller; 32. Support roller; 321. Cutting lip;

[0027] 4. Cooling component; 5. Scrap box; 51. Conveyor belt; 6. Deviation rectifying device; 7. Tensioning roller; 8. Pre-impregnated tape core; 9. Conveyor belt blank; 91. Edge pressing; 92. Edge material. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To clearly illustrate the technical features of this solution, the present invention will be elaborated in detail below through specific embodiments and in conjunction with its accompanying drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "left", "right", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0029] Such as Figures 1 - 5As shown in the figure, the present invention provides a calendering device for conveyor belt production, including a base. On the base, there are sequentially arranged a preheating component 1, a calender body 2, a trimming component 3 and a cooling component 4. The preheating component 1 removes dust, preheats and heats the pre-impregnated tape core 8, and the calender applies cover rubber to the pre-impregnated tape core. After cutting and cooling, a conveyor belt blank 9 is obtained.

[0030] The preheating component 1 includes a preheating box 11, a calender hood 21 and two infrared heaters 17. The calender hood 21 is fixed on the calender body 2, and the preheating box 11 is fixed on the base. The preheating box and the calender hood 21 form a loop through a pipeline 13, which can make the heat flow circulate continuously. The preheating box preheats the pre-impregnated tape core by the heat generated by the calender, saving energy consumption. At the same time, it will not significantly reduce the heat of the calender itself, avoid the cooling of the rubber compound, and will not affect the rubber compound pressing.

[0031] On the air inlet pipe and the air return pipe of the pipeline 13, there is respectively arranged a filter box 14 and a fan 15. When the heat flow blows through the pre-impregnated tape core, it takes away the dust on the tape core, and the dust is filtered through the filter box to avoid affecting the pressing of the tape core and the rubber compound. The infrared heaters 17 are fixed on the calender body 2 to heat the pre-impregnated tape core 8 entering the calender rolls, so that the impregnated glue on the pre-impregnated tape core melts, facilitating complete pressing with the rubber compound.

[0032] The trimming component 3 includes a cutting roll 31 and a supporting roll 32. The cutting roll 31 and the supporting roll 32 are arranged on the base through brackets. At both ends of the cutting roll 31, there is respectively arranged a set of adjustable cutting knife assemblies for cutting the conveyor belt blank 9 and pressing the edge of the blank. It should be noted that both the cutting roll 31 and the supporting roll 32 are connected to the transmission mechanism and rotate actively for cutting the blank.

[0033] As a preferred embodiment, the two infrared heaters 17 are respectively located on the upper side and the lower side of the pre-impregnated tape core 8 and face the pre-impregnated tape core 8, heating the upper and lower parts of the pre-impregnated tape core simultaneously, so that the impregnated glue on the tape core reaches the molten state, facilitating more dense pressing with the rubber compound.

[0034] As a preferred embodiment, several through holes 12 are opened on both sides of the preheating box 11. An auxiliary roll is arranged in the preheating box 11. The pre-impregnated tape core 8 passes through the middle height of the through holes of the preheating box 11 through the auxiliary roll. The purpose is that the hot air can blow to the upper and lower surfaces of the pre-impregnated tape core. There is more dust in the processing workshop, and it is easy to accumulate dust during the stacking and unfolding of the pre-impregnated tape core. Blowing off the dust makes the combination of the tape core and the rubber compound more stable.

[0035] As a preferred embodiment, each set of the cutter assemblies 3 includes a cutter 314, a hemming roller 315 and two locking bolts 313. The middle part of the cutting roller 31 is a supporting part 311, and threaded sections 312 are provided at both ends of the cutting roller. The cutter 314, the hemming roller 315 and the two locking bolts 313 are threadedly connected to the threaded sections 312. The cutter 314 and the hemming roller 315 are located between the two locking bolts, and the hemming roller 315 is located inside the cutter 314. The distance between the cutters is adjusted according to the conveyor belt blank to be produced, and then fixed for cutting the edge material 92. In addition, both the cutting roller and the supporting roller are driven by a transmission mechanism and the distance between them is adjustable. The specific structure is not described herein again. The cutting roller and the supporting roller rotate actively for cutting.

[0036] As a preferred embodiment, as Figure 3 , 4 shown, the hemming roller 315 and the cutter 314 are fixedly connected. The outer diameter of the hemming roller 315 is larger than the outer diameter of the supporting part 311 of the cutting roller, and the outer diameter of the locking bolt 313 is smaller than the outer diameter of the supporting part 311 of the cutting roller. That is, the distance between the supporting part 311 and the supporting roller 32 is equivalent to the thickness of the conveyor belt blank 9 to be produced, and the distance between the hemming roller 315 and the supporting roller 32 is smaller than the thickness of the conveyor belt blank 9. When the blank has not cooled yet, the hemming roller 315 further presses the edge of the conveyor belt blank 9 for hemming, making the combination of the edges of the conveyor belt more stable, extending the service life of the conveyor belt and avoiding delamination.

[0037] As a preferred embodiment, the adjustment distance of each set of the cutter assemblies 3 is less than 5 cm to avoid too large a distance between the threaded sections, which affects the flatness of the blank. Corresponding cutting rollers should be selected according to blanks of different widths and thicknesses.

[0038] As a preferred embodiment, the cutter 314 is in contact with the supporting roller 32. A cutting lip 321 is provided on the supporting roller, and a plastic washer is provided on the cutting lip. When the cutter is in contact with the plastic washer, the cutting is more thorough and damage to the cutter and the supporting roller is avoided.

[0039] As a preferred embodiment, two sets of blanking conveyor belts 51 are provided below the edge cutting assembly 3. The blanking conveyor belts are respectively located on both sides of the conveyor belt blank 9. The blanking conveyor belts 51 are inclined, and a waste box 5 is placed at the tail. The cut edge material 92 enters the waste box along the conveyor belt.

[0040] As a preferred embodiment, the cooling assembly includes a number of cooling rollers arranged in sequence to cool and shape the conveyor belt blank.

[0041] As a preferred embodiment, a deviation rectifying device 6 and a tensioning roller 7 are provided in front of the preheating box 11.

[0042] The present invention recycles the heat generated at the calender. A preheating box is arranged in front of the calender to preheat the pre-impregnated tape core. In cooperation with an infrared heater for heating, energy consumption is saved. Preheating and heating make the glue impregnated in the pre-impregnated tape core completely molten, making the lamination of the tape core and the rubber compound more dense and stable. The calender hood is connected to the preheating box through a circulation pipeline, which is not one-way, enabling the heat flow to circulate continuously, not significantly reducing the heat of the calender itself, and preventing the rubber compound from cooling and solidifying. While the pipeline forms a circulating flow to preheat the tape core, it can also carry away the dust on the surface of the pre-impregnated tape core. Two dust removal and filtration boxes are provided on the pipeline to collect the dust, further enhancing the bonding performance between the tape core and the rubber compound.

[0043] Details not described in the present invention are all well-known techniques in the technical field. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A calendering device for conveyor belt production, comprising a base, characterized in that: A preheating component, a calender body, a trimming component, and a cooling component are successively arranged on the base; The preheating component includes a preheating box, a calender hood, and two infrared heaters. The calender hood is fixed on the calender body, the preheating box is fixed on the base, the preheating box and the calender hood form a loop through a pipeline, a filter box and a blower are respectively arranged on the air inlet pipe and the air return pipe of the pipeline, and the infrared heaters are fixed on the calender body to heat the pre-impregnated tape core entering the calender rolls; The trimming component includes a trimming roll and a supporting roll. The trimming roll and the supporting roll are arranged on the base through a bracket, and a set of adjustable cutting knife assemblies are respectively arranged at both ends of the trimming roll for cutting the conveyor belt blank and pressing the edge of the blank; The preheating component performs dust removal, preheating, and heating on the pre-impregnated tape core, the calender applies cover rubber to the pre-impregnated tape core, and after cutting and cooling, a conveyor belt blank is obtained.

2. The calendering device for conveyor belt production according to claim 1, characterized in that : The two infrared heaters are respectively located on the upper side and the lower side of the pre-impregnated tape core and face the pre-impregnated tape core.

3. The calendering device for conveyor belt production according to claim 1, characterized in that : A plurality of through holes are respectively formed on both sides of the preheating box, auxiliary rollers are arranged in the preheating box, and the pre-impregnated tape core passes through the middle height of the through holes of the preheating box through the auxiliary rollers.

4. The calendering device for conveyor belt production according to claim 1, characterized in that : Each set of the cutting knife assemblies includes a cutting knife, a edge pressing roll, and two locking bolts. The middle part of the trimming roll is a supporting part, threaded sections are arranged at both ends of the trimming roll, the cutting knife, the edge pressing roll, and the two locking bolts are threadedly connected to the threaded sections, the cutting knife and the edge pressing roll are located between the two locking bolts, and the edge pressing roll is located inside the cutting knife.

5. The calendering device for conveyor belt production according to claim 3, characterized in that : The edge pressing roll and the cutting knife are fixedly connected, the outer diameter of the edge pressing roll is larger than the outer diameter of the supporting part of the trimming roll, and the outer diameter of the locking bolt is smaller than the outer diameter of the supporting part of the trimming roll.

6. The calendering device for conveyor belt production according to claim 4, characterized in that : The adjustment distance of each set of the cutting knife assemblies is less than 5 cm.

7. The calendering device for conveyor belt production according to claim 5, characterized in that : The cutting knife is in contact with the supporting roll, a cutting lip is arranged on the supporting roll, and a plastic washer is arranged on the cutting lip.

8. The calendering device for conveyor belt production according to claim 1, characterized in that : Two sets of blanking conveyor belts are arranged below the trimming component, the blanking conveyor belts are respectively located on both sides of the conveyor belt blank, the blanking conveyor belts are inclined, and a waste box is placed at the tail.

9. The calendering device for conveyor belt production according to claim 1, characterized in that: The cooling component includes a plurality of cooling rolls arranged in sequence.

10. The calendering device for conveyor belt production according to claim 1, characterized in that: A deviation rectifying device and a tensioning roll are arranged in front of the preheating box.

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