A molding equipment and method for forming rubber conveyor belts

Abstract

This invention provides a molding equipment and method for forming rubber conveyor belts, including a fixed frame and a swing frame, each with a vertically arranged hydraulic cylinder fixedly installed on its outer side. A connecting member is fixedly connected to the piston rod of each hydraulic cylinder, and the left and right ends of the connecting member are respectively hinged to a rod. A slider is hinged to the ends of the two rods, and the slider is installed in a guide groove on the fixed frame. A spring is provided between the slider and the end of the guide groove. The shaft ends of the tension rollers are respectively located on the two sliders at corresponding positions. Two padding unwinding and winding devices are symmetrically arranged on the frame, and a padding guide roller is installed above each of the two padding unwinding and winding devices. This invention adopts a vertically symmetrical structural layout, resulting in a small equipment footprint. During the top-to-bottom conveying process, the conveyor belt is pressed by a double-stage pressing device to ensure that the conveyor belt core and the padding are fully bonded and formed. The tension of the conveyor belt can be automatically adjusted by the symmetrical tension adjustment structures on both sides, providing precise and convenient tension control.

Description

Technical Field

[0001] This invention relates to the field of conveyor belt technology, and in particular to a molding equipment and method for molding rubber conveyor belts. Background Technology

[0002] Most existing conveyor forming equipment adopts a linear layout structure. The conveyor belt winding and forming requires multiple processes, such as repeated unwinding and winding, resulting in multiple pieces of equipment occupying a large space. Furthermore, the linear layout structure occupies a large space.

[0003] Currently, the conveyor belt forming process involves uniformly pressing one side of the belt core with the padding cloth, and then traction pressing the other side of the padding cloth to form the belt. Because this process involves two separate forming steps, the conveying path of the pressing and traction equipment is long, and a large number of equipment are used in conveyor belt forming, resulting in a large footprint. Furthermore, it is difficult to ensure that the tension of the padding cloth is the same during the two pressing processes. If the tension is different, the difference in tensile force on the two sides of the padding cloth during the use of the conveyor belt will be large, which will seriously affect the service life of the conveyor belt.

[0004] Therefore, this solution addresses this technical problem. Summary of the Invention

[0005] In view of the shortcomings of existing conveyor belt forming equipment, such as large area occupation and large difference in tensile strength between the two sides of the padding cloth, which seriously affects the service life of the conveyor belt, a major objective of the present invention is to provide a forming equipment and method for forming rubber conveyor belts.

[0006] To solve the above-mentioned technical problems, the present invention provides a forming equipment for forming rubber conveyor belts, including a fixed frame and a swing frame, each with a vertically arranged hydraulic cylinder fixedly installed on its outer side. A connecting member is fixedly connected to the piston rod of each of the two hydraulic cylinders. The left and right ends of the connecting member are respectively hinged to a rod. A slider is hinged to the end of each rod. The slider is installed in a guide groove on the fixed frame. A spring is provided between the slider and the end of the guide groove. The shaft ends of the tension rollers are respectively on the two sliders at corresponding positions. Two padding unwinding and winding devices are symmetrically arranged on the frame. A padding guide roller is installed above each of the two padding unwinding and winding devices. A glue brushing device is located below the belt core guide device. A pair of pressure rollers are located below the glue brushing device. A traction pressing device with adjustable pressing force is located at the lower end of the pressure rollers. A guide roller is installed on the fixed frame below the traction pressing device. A winding device is installed on the fixed frame on the side of the guide roller.

[0007] Furthermore, the rods and tension rollers on the left and right sides of the frame are symmetrical along the vertical central axis of the frame, and the sliders on the front and rear sides of the tension roller are located on the same horizontal plane.

[0008] Furthermore, the glue application device adopts a structure of two symmetrically arranged glue application rollers, and the glue application rollers are positioned directly above the pressure roller.

[0009] Furthermore, the bottom of the swing frame is hinged to the fixed frame, the hydraulic swing cylinder is fixed on the fixed frame, and the swing rod of the hydraulic swing cylinder is fixedly connected to the swing frame.

[0010] Furthermore, the pressing roller and the traction pressing device are arranged vertically to form a two-stage pressing and forming mechanism.

[0011] Furthermore, a driving bevel gear is fixedly mounted at each end of the padding unwinding and winding device. The driving bevel gear meshes with the driven bevel gear at the lower end of the rotating shaft. The rotating shaft is mounted on the fixed frame. A cam is mounted at the other end of the rotating shaft. The cam is tangent to the limiting plate. The limiting plate is fitted on the T-shaped guide rod. One end of the spring abuts against the limiting plate, and the other end abuts against the fixed frame.

[0012] A method of using a molding equipment for forming rubber conveyor belts, characterized in that,

[0013] a. Core winding: The core on the core winding device is guided and conveyed by two core guiding devices. Under the traction of the winding device, it comes into contact with the glue application device and the adhesive is evenly applied to the surface of the left and right sides of the core.

[0014] b. Pad roll-up: The two pad roll-up devices on the left and right sides of the frame unfold and guide the pad roll through the pad roll guide rollers to the upper end of the two pressure rollers;

[0015] c. First-stage pressing: The belt core and the pads symmetrically arranged on the left and right sides combine and enter the gap between the pressing rollers. Under the pressing action of the pressing rollers, the rubber layer can be homogenized and the strength of the conveyor belt can be improved.

[0016] d. Secondary pressing: After the conveyor belt is initially formed by the pressing roller, it enters the traction pressing device. It can perform secondary pressing on the conveyor belt that is not pressed in place, so as to ensure the pressing and forming effect of the conveyor belt; Finished product winding: Under the traction of the winding device, the formed conveyor belt is wound and wrapped onto the winding device by the guide roller.

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

[0018] 1. The present invention adopts a vertical symmetrical structural layout, which avoids the disadvantage of large equipment area in the two separate compression molding processes, and greatly improves the forming efficiency of conveyor belts.

[0019] 2. In this invention, the conveyor belt is pressed through a two-stage pressing device during the top-to-bottom conveying process. The first-stage pressing ensures that the conveyor belt core and the padding cloth are fully bonded together. The second-stage pressing process can reprocess the conveyor belt areas that are not properly pressed, ensuring the pressing effect of the conveyor belt and improving the overall strength.

[0020] 3. The tension of the padding cloth on both sides of the belt core can be automatically adjusted by the symmetrical tension adjustment structure on both sides, namely the tension roller. The tension roller is symmetrically arranged along the belt core, and the tension on both sides is equal and adjustable. This solves the problem that the tension of the transmission conveyor belt forming equipment is difficult to control, which affects its service life.

[0021] 4. The padding unwinding and winding device designed in this invention drives the cam to rotate on both sides through bevel gear transmission, which overcomes the elastic force of the spring, so that the limiting plate moves laterally along the outer contour of the cam, realizing linkage motion, and the two sides move synchronously. The structure is simple and has the function of guiding position correction. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a front view of the overall structure of the present invention.

[0024] Figure 2 This is a top view of the overall structure of the invention.

[0025] Figure 3 This is a process flow diagram of the present invention.

[0026] Figure 4 This is the present invention. Figure 1 Structural diagram of the intermediate padding cloth unwinding and take-up device.

[0027] Figure 5 This is the present invention. Figure 4 A partial enlarged view of the padding and unwinding device in the middle.

[0028] In the picture,

[0029] 1-Core guide unwinding and winding device, 2-Core guide device, 3-Connector, 4-Rod, 5-Tension roller, 6-Slider, 7-Pad guide roller, 8-Glue brushing device, 9-Pressure roller, 10-Pad guide unwinding and winding device, 11-Traction pressing device, 12-Guide roller, 13-Winding device, 14-Hydraulic cylinder, 15-Guide groove, 16-Spring, 17-Fixed frame, 18-Swing frame, 19-Hydraulic swing cylinder, 20-Cam, 21-T-shaped guide rod, 22-Limiting plate, 23-Rotating shaft, 24-Spring, 25-Passive bevel gear, 26-Driving bevel gear. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0031] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0032] like Figures 1 to 3 As shown, the forming equipment for forming rubber conveyor belts includes a fixed frame 17 and a swing frame 18, each with a vertically arranged hydraulic cylinder 14 fixedly installed on its outer side. A connecting piece 3 is fixedly connected to the piston rod of each of the two hydraulic cylinders 14. The left and right ends of the connecting piece 3 are respectively hinged to a rod 4. A slider 6 is hinged to the end of each rod 4. The slider 6 is installed in a guide groove 15 on the fixed frame 17. A spring 16 is provided between the slider 6 and the end of the guide groove 15. Two sliders 16 are respectively located at corresponding positions on the shaft ends of the tension roller 5. On block 6, two padding guide winding devices 10 are symmetrically arranged on the frame. A padding guide roller 7 is installed above each of the two padding guide winding devices 10. The glue application device 8 is located below the core guide device 2. A pair of pressure rollers 9 are located below the glue application device 8. A traction pressing device 11 with adjustable pressing force is located at the lower end of the pressure roller 9. A guide roller 12 installed on the fixed frame 17 is located below the traction pressing device 11. A winding device 13 is installed on the fixed frame 17 on the side of the guide roller 12.

[0033] Furthermore, the rods 4 and tension rollers 5 on the left and right sides of the frame are symmetrical along the vertical central axis of the frame. The sliders 6 on the front and rear sides of the tension rollers 5 are located on the same horizontal plane. The position of the sliders 6 in the guide groove 15 can be adjusted by raising or lowering the rods 4, thereby adjusting the position of the tension rollers 5 and achieving the purpose of synchronously adjusting the tension of the pads on both sides of the belt core. The tension control is convenient and labor-saving.

[0034] Furthermore, the glue application device 8 adopts a structure of two symmetrically arranged glue application rollers, and the glue application rollers are positioned directly above the pressure roller 9 to ensure that the glue application device 8 can simultaneously and evenly apply the glue layer on both sides of the belt core, thus ensuring uniform glue application.

[0035] Furthermore, the bottom of the swing frame 18 is hinged to the fixed frame 17, the hydraulic swing cylinder 19 is fixed on the fixed frame 17, the swing arm of the hydraulic swing cylinder 19 is fixedly connected to the swing frame 18, and the swing of the hydraulic swing cylinder 19 is controlled to separate the hydraulic swing cylinder 19 from the fixed frame 17, which facilitates loading and unloading, and the structure is simple and reliable.

[0036] Furthermore, the pressing roller 9 and the traction pressing device 11 are arranged vertically to form a two-stage pressing and forming mechanism, which realizes two-stage pressing in the vertical direction to ensure full contact and adhesion.

[0037] Furthermore, a driving bevel gear 26 is fixedly mounted at each end of the padding unwinding and winding device 10. The driving bevel gear 26 meshes with the driven bevel gear 25 at the lower end of the rotating shaft 23. The rotating shaft 23 is mounted on the fixed frame 17. A cam 20 is mounted on the other end of the rotating shaft 23. The cam 20 is tangent to the limiting plate 22. The limiting plate 22 is fitted on the T-shaped guide rod 21. One end of the spring 24 abuts against the limiting plate 22, and the other end abuts against the fixed frame 17. During the rotation of the padding unwinding and winding device 10, the two rotating shafts 23 are driven to rotate through the meshing of the bevel gears. During the rotation of the cam 20 on the rotating shaft 23, the limiting plate 22 is pushed by the spring force of the spring 24, so that the limiting plate 22 moves laterally along the outer contour of the cam 2, realizing linkage motion. The two cams 2 move synchronously. The structure is simple and has the function of guiding position correction.

[0038] A method of using a molding equipment for forming rubber conveyor belts.

[0039] a. Core winding: The core on the core winding device 1 is guided and conveyed by two core guiding devices 2. Under the traction of the winding device 13, it comes into line contact with the glue application device 8, and the adhesive is evenly applied to the surface of the left and right sides of the core.

[0040] b. Pad roll-up: The two pad roll-up devices 10 on the left and right sides of the frame unfold and guide the pad roll through the pad roll guide rollers 7 to the upper end of the two pressing rollers 9.

[0041] c. First-stage pressing: The belt core and the pads symmetrically arranged on the left and right sides combine and enter the gap between the pressing rollers 9. Under the pressing action of the pressing rollers 9, the rubber layer can be homogenized and the strength of the conveyor belt can be improved.

[0042] d. Secondary pressing: After the conveyor belt is initially formed by the pressing roller 9, it enters the traction pressing device 11. It can perform secondary pressing on the conveyor belt that is not pressed in place in some areas to ensure the pressing and forming effect of the conveyor belt.

[0043] e. Finished product winding: Under the traction of the winding device 13, the formed conveyor belt is wound onto the winding device 13 under the guidance of the guide roller 12.

[0044] In use, the core strip on the core unwinding and winding device 1 is guided by two core strip guide devices 2 to be conveyed to the glue application device 8. The core strip passes through the gap between the two glue application devices 8. During the rotation of the glue application device 8, glue is continuously applied to the core strip, evenly coating its surface. Simultaneously, the two padding cloth unwinding and winding devices 10 on the left and right sides of the frame guide the padding cloth through padding cloth guide rollers 7 to be conveyed between two pressing rollers 9. The core strip and padding cloth are initially pressed together with low pressure by the pressing rollers 9. This step homogenizes the adhesive layer between the padding cloth and the core strip, allowing the adhesive layer to fully bond with both the padding cloth and the core strip, achieving a uniform adhesive layer and initial pressing and bonding effect. Then it enters the traction pressing device 11. After secondary pressing, it ensures that the conveyor belt core and the pad are fully bonded and formed, improves the overall strength of the conveyor belt, avoids the uniform and weak bonding caused by symmetrical extrusion, improves the bonding strength, and further extends the service life of the conveyor belt. The tension of the conveyor belt can be automatically adjusted by the symmetrical tension adjustment structure on both sides. The two sliders 6 are symmetrically arranged along the axis of the frame. The piston rod of the hydraulic cylinder 14 is used to control the sliders 6 to move synchronously along the inside of the guide groove 15. The direction and amount of movement are equal on both sides, so the tension on both sides is equal. The tension adjustment is convenient and labor-saving, and there will be no uneven tension. It is reliable and convenient to use.

[0045] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solutions described in this invention, or by designing similar technical solutions by those skilled in the art under the inspiration of the technical solutions described in this invention, falls within the protection scope of this invention.

Claims

1. A molding device for forming rubber conveyor belts, characterized in that, The frame includes a fixed frame (17) and a swing frame (18), each with a vertically arranged hydraulic cylinder (14) fixedly installed on its outer side. A connecting piece (3) is fixedly connected to the piston rod of each of the two hydraulic cylinders (14). The left and right ends of the connecting piece (3) are respectively hinged to a rod (4). A slider (6) is hinged to the end of each of the two rods (4). The slider (6) is installed in a guide groove (15) on the fixed frame (17). A spring (16) is provided between the slider (6) and the end of the guide groove (15). The shaft ends of the tension roller (5) are respectively located on the two sliders (6) at corresponding positions. Two padding unwinding and winding devices (10) are symmetrically arranged on the top. A padding guide roller (7) is installed above each of the two padding unwinding and winding devices (10). A glue brushing device (8) is set below the core guide device (2). A pair of pressing rollers (9) are provided below the glue brushing device (8). A traction pressing device (11) with adjustable pressing force is provided at the lower end of the pressing roller (9). A guide roller (12) installed on the fixed frame (17) is provided below the traction pressing device (11). A winding device (13) is installed on the fixed frame (17) on the side of the guide roller (12). The pressing roller (9) and the traction pressing device (11) are arranged vertically to form a two-stage pressing and forming mechanism; The padding unwinding and winding device (10) has a driving bevel gear (26) fixed at both ends. The driving bevel gear (26) meshes with the passive bevel gear (25) at the lower end of the rotating shaft (23). The rotating shaft (23) is mounted on the fixed frame (17). A cam (20) is installed at the other end of the rotating shaft (23). The cam (20) is tangent to the limiting plate (22). The limiting plate (22) is fitted on the T-shaped guide rod (21). One end of the spring (24) abuts against the limiting plate (22), and the other end abuts against the fixed frame (17).

2. The forming equipment for forming rubber conveyor belts as described in claim 1, characterized in that, The rods (4) and tension rollers (5) on the left and right sides of the frame are symmetrical along the vertical central axis of the frame, and the sliders (6) on the front and rear sides of the tension rollers (5) are located on the same horizontal plane.

3. The forming equipment for forming rubber conveyor belts as described in claim 1, characterized in that, The glue application device (8) adopts a structure of two symmetrically arranged glue application rollers, and the glue application rollers are positioned directly above the pressure roller (9).

4. The forming equipment for forming rubber conveyor belts as described in claim 1, characterized in that, The bottom of the swing frame (18) is hinged to the fixed frame (17), the hydraulic swing cylinder (19) is fixed on the fixed frame (17), and the swing rod of the hydraulic swing cylinder (19) is fixedly connected to the swing frame (18).

5. A method of using the forming equipment for forming rubber conveyor belts as described in claim 1, characterized in that, a. Core winding: The core on the core winding device (1) is guided and conveyed by two core guiding devices (2). Under the traction of the winding device (13), it comes into contact with the glue application device (8) and the adhesive is evenly applied to the surface of the left and right sides of the core. b. Pad roll-up: The two pad roll-up devices (10) on the left and right sides of the frame unfold and guide the pad through the pad guide roller (7) to the upper end of the two pressing rollers (9); c. First-stage pressing: The belt core and the pads symmetrically arranged on the left and right sides combine and enter the gap between the pressing rollers (9). Under the pressing action of the pressing rollers (9), the rubber layer can be homogenized and the strength of the conveyor belt can be improved. d. Secondary pressing: After the conveyor belt is initially formed by the pressing roller (9), it enters the traction pressing device (11) to perform secondary pressing on the conveyor belt that is not pressed in place, so as to ensure the pressing and forming effect of the conveyor belt. e. Finished product winding: Under the traction of the winding device (13), the formed conveyor belt is wound onto the winding device (13) under the guidance of the guide roller (12).

Images