Calendering and flattening mechanism for rubber sheets of variable thickness

Abstract

The utility model discloses calendering and leveling mechanism of many thicknesses of rubber sheet can be adapted, including frame, be provided with anti -sticky conveying assembly and adjustable calendering assembly on the frame, be provided with orientation positioning assembly on anti -sticky conveying assembly, the advantage is: effective solution current rubber sheet calendering and leveling mechanism many thicknesses of adaptation difference, the deficiency of adjustment synchronism, the orientation positioning loss leads to rubber sheet easy deviation and fall, the problem that the conveying belt is without anti -sticky design and feed, press roll, discharge drive is not synchronous, and the orientation structure can not adapt to different width rubber sheet.

Description

Technical Field

[0001] This utility model relates to the field of rubber processing equipment technology, and in particular to a calendering and leveling mechanism that can be adapted to rubber sheets of various thicknesses. Background Technology

[0002] The calendering and leveling of rubber sheets is one of the core processes in rubber processing, and its quality directly determines the precision and product qualification rate of subsequent processes such as cutting and vulcanization. Existing rubber sheet calendering and leveling mechanisms have many shortcomings: Firstly, the adjustment of the upper pressure roller in traditional calendering mechanisms is mostly done manually on one side. When switching between rubber sheets of different thicknesses, the distance between the two sides needs to be calibrated repeatedly, which is cumbersome and time-consuming. Moreover, the lack of precise thickness markings and low distance control accuracy can easily lead to uneven rubber sheet thickness, making it unsuitable for mass production of multiple thicknesses.

[0003] Secondly, the lack of effective guidance and limiting of the rubber sheet during the calendering process makes it prone to lateral displacement, resulting in uneven calendering force. Furthermore, the lack of a transition structure at the connection between the conveyor belt and the pressure roller makes it easy for the rubber sheet to fall out of the gap, affecting production continuity and product yield.

[0004] Third, ordinary conveyor belts do not have anti-stick treatment on their surface. The rubber sheets are prone to adsorption and adhesion during conveying and calendering, causing surface scratches and tears. At the same time, the feeding, pressure roller and discharge lack a synchronous driving mechanism. The speed mismatch can easily lead to stretching or wrinkling of the rubber sheets, reducing the leveling effect.

[0005] Fourth, the guide structure is mostly of fixed size and cannot be flexibly adjusted according to the width of the rubber sheet. Moreover, it lacks a unified drive coordination design, and each component operates independently, which further aggravates the defects of calendering and leveling, making it difficult to meet the processing requirements of rubber sheets of different specifications.

[0006] In summary, there is an urgent need for a calendering and leveling mechanism that is easy to adjust, accurately positioned, and provides stable conveying to solve many problems in traditional processing. Utility Model Content

[0007] The purpose of this invention is to solve the problems of poor adaptability to multiple thicknesses, insufficient adjustment synchronization, lack of guiding and positioning leading to easy displacement and falling of rubber sheets, lack of anti-stick design of conveyor belt and asynchronous driving of feeding, pressure roller and discharge, and inability of guiding structure to adapt to rubber sheets of different widths in existing rubber sheet calendering and leveling mechanisms, and to provide a calendering and leveling mechanism that can adapt to multiple thicknesses of rubber sheets.

[0008] This utility model achieves the above objectives through the following technical solutions: A calendering and leveling mechanism adaptable to rubber sheets of various thicknesses includes a frame, on which an anti-sticking conveying assembly and an adjustable calendering assembly are mounted. The anti-sticking conveying assembly is equipped with a guiding and positioning assembly. The anti-sticking conveying assembly includes an infeed conveyor belt and an outlet conveyor belt, respectively located at both ends of the frame. The adjustable calendering assembly is located between the infeed conveyor belt and the outlet conveyor belt, and includes a first support, an upper pressure roller, and a lower pressure roller. The first support is mounted on the frame, the upper pressure roller is movably connected to the first support via a first drive assembly, and the lower pressure roller is rotatably connected between the frames. The infeed conveyor belt, the outlet conveyor belt, and the lower pressure roller are driven by a second drive assembly.

[0009] Furthermore, the first support includes two sets of first vertical plates and one set of first top plates. Both sets of first vertical plates are provided with first sliding grooves, and the outer side of the first vertical plates is provided with thickness scale lines.

[0010] Furthermore, the first driving assembly includes an L-shaped slider slidably connected within the first groove. The two ends of the upper pressure roller are rotatably connected to the L-shaped slider via bearings. A lead screw is rotatably connected to the first vertical plate at both ends of the first top plate. The lead screw and the L-shaped slider are connected via ball nuts. A concave frame is provided on the upper surface of the first top plate, and a first motor is mounted on the concave frame. A first synchronous pulley is provided at the top of the lead screw, and a second synchronous pulley is provided at the output end of the first motor. Both sets of the first and second synchronous pulleys are connected via synchronous belts to ensure that the two sets of lead screws rotate synchronously.

[0011] Furthermore, the second drive assembly includes a second motor, and a third synchronous pulley is provided at the output end of the second motor. The rotating shafts of the feeding conveyor belt, the lower pressure roller, and the rotating shaft of the discharging conveyor belt are all provided with fourth synchronous pulleys on the same side. The third synchronous pulley is connected to an adjacent set of fourth synchronous pulleys through a synchronous belt drive. The three sets of fourth synchronous pulleys are all connected to each other through a synchronous belt drive to ensure that the feeding conveyor belt, the lower pressure roller, and the discharging conveyor belt rotate synchronously.

[0012] Furthermore, two sets of the guiding and positioning components are mirror images of each other, respectively positioned above one end of the feeding conveyor belt and the discharging conveyor belt; each guiding and positioning component includes a second bracket, with a bidirectional lead screw rotatably connected between its two ends, and guide members provided at both ends of the bidirectional lead screw via ball nuts; the two sets of bidirectional lead screws are driven by a third drive component; the third drive component includes a third motor, with a fifth synchronous pulley at the output end of the third motor, and a sixth synchronous pulley at one end of each set of bidirectional lead screws; the fifth synchronous pulley is connected to the two sets of sixth synchronous pulleys via a synchronous belt drive.

[0013] Furthermore, the second support includes two sets of second vertical plates and one set of second top plates. The lower surface of the second top plate is provided with a second sliding groove. The upper end of the guide is provided with a slider, which is adapted to the second sliding groove. A receiving plate is provided on the inner side of one end of the guide to prevent the rubber sheet from falling out of the gap between the conveyor belt and the lower pressure roller.

[0014] Furthermore, both the infeed conveyor belt and the discharge conveyor belt are Teflon-coated conveyor belts to reduce the risk of rubber sheet sticking.

[0015] Beneficial effects: This utility model has the following beneficial effects: The first motor drives the double lead screws to rotate synchronously, which drives the upper pressure roller to rise and fall smoothly. In conjunction with the thickness scale line of the first vertical plate, the pressure roller spacing can be quickly adjusted without repeated calibration. While adapting to rubber sheets of different thicknesses, it ensures that the spacing on both sides is uniform, solving the problems of cumbersome and low precision of traditional adjustment and improving the adaptability of multi-specification production. Two sets of guide and positioning components are synchronously driven to open and close the guide by a bidirectional screw, which can accommodate rubber sheets of different widths and avoid lateral offset. The receiving plate of the guide fills the gap between the conveyor belt and the pressure roller to prevent the rubber sheet from falling off, ensuring production continuity and product yield. Teflon-coated conveyor belts effectively reduce the risk of rubber sheet adhesion and avoid surface scratches and tears. The second drive assembly enables synchronous rotation of the feed conveyor belt, lower pressure roller, and discharge conveyor belt, with speed matching and no dragging, preventing the rubber sheet from stretching or wrinkling and improving the calendering and leveling quality. Each component is driven by a synchronous pulley and synchronous belt, resulting in strong coordination of movements. The automated adjustment design reduces manual intervention, making operation convenient and adaptable to the needs of mass production. It significantly reduces labor intensity and improves the overall processing effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the adjustable calendering assembly of this utility model; Figure 3This is a schematic diagram of the first support of this utility model; Figure 4 This is a schematic diagram of the first drive component structure of this utility model; Figure 5 This is a schematic diagram of the second drive component structure of this utility model; Figure 6 This is a schematic diagram of the guiding and positioning component structure of this utility model.

[0017] In the diagram: 1-Frame, 2-Anti-stick conveyor assembly, 3-Adjustable calendering assembly, 4-Guide positioning assembly; 201-Feed conveyor belt, 202-Discharge conveyor belt, 301-First support, 302-Upper pressure roller, 303-Lower pressure roller, 304-First drive assembly, 305-Second drive assembly, 401-Second support, 402-Bidirectional lead screw, 403-Guide component, 404-Third drive assembly, 3011-First vertical plate, 3012-First top plate, 3013-Groove, 3014-Thickness scale line, 3041-L-shaped slider, 3042 - Lead screw, 3043 - Concave frame, 3044 - First motor, 3045 - First synchronous pulley, 3046 - Second synchronous pulley, 3051 - Second motor, 3052 - Third synchronous pulley, 3053 - Fourth synchronous pulley, 4011 - Second vertical plate, 4012 - Second top plate, 4013 - Second slide groove, 4014 - Second slider, 4031 - Support plate, 4041 - Third motor, 4042 - Fifth synchronous pulley, 4043 - Sixth synchronous pulley. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Combination Figures 1 to 6The calendering and leveling mechanism shown is adaptable to rubber sheets of various thicknesses. It includes a frame 1, an anti-stick conveying assembly 2 and an adjustable calendering assembly 3 on the frame 1, and a guide and positioning assembly 4 on the anti-stick conveying assembly 2. The anti-stick conveying assembly 2 includes an infeed conveyor belt 201 and an outfeed conveyor belt 202, which are respectively located at both ends of the frame 1. The height of the conveying surface is flush with the surface of the subsequent lower pressure roller 303 to ensure a smooth transition of the rubber sheet. The adjustable calendering assembly 3 is located between the feed conveyor belt 201 and the discharge conveyor belt 202. It includes a first support 301, an upper pressure roller 302, and a lower pressure roller 303. The first support 301 is fastened to the frame 1 by bolts. The upper pressure roller 302 is movably connected to the first support 301 through the first drive assembly 304, which can realize the vertical adjustment of the distance. The lower pressure roller 303 is rotatably connected to the frame 1. The feed conveyor belt 201, the discharge conveyor belt 202, and the lower pressure roller 303 are driven by the second drive assembly 305 to ensure that the conveying speed matches the calendering speed, avoid the stretching or wrinkling of the rubber sheet, and solve the problem of asynchronous speed in traditional mechanisms.

[0020] The first support 301 includes two sets of first vertical plates 3011 and one set of first top plates 3012. Both sets of first vertical plates 3011 are provided with first sliding grooves 3013. The outer side of the first vertical plate 3011 is provided with thickness scale lines 3014, which can be used to read the distance between the pressure rollers. It can be used in conjunction with the first drive component 304 to achieve precise adjustment, thus solving the defects of traditional mechanisms that lack precise thickness markings and have low adjustment accuracy.

[0021] The first drive assembly 304 includes an L-shaped slider 3041 slidably connected in the first slide groove 3013. The two ends of the upper pressure roller 302 are rotatably connected to the L-shaped slider 3041 through bearings, which ensures that the upper pressure roller 302 can rotate flexibly and reduces axial movement. The two ends of the first top plate 3012 are rotatably connected to the first vertical plate 3011 through a lead screw 3042. The lead screw 3042 and the L-shaped slider 3041 are connected by a ball nut. A concave frame 3043 is provided on the upper surface of the first top plate 3012. A first motor 3044 is provided on the concave frame 3043. A first synchronous pulley 3045 is provided at the top of the lead screw 3042. A second synchronous pulley 3046 is provided at the output end of the first motor 3044. The two sets of first synchronous pulleys 3045 and second synchronous pulleys 3046 are connected by synchronous belts to ensure that the two sets of lead screws 3042 rotate synchronously, thereby driving the upper pressure roller 302 to rise and fall smoothly. There is no need to repeatedly calibrate the distance between the two sides. It can adapt to rubber sheets of different thicknesses while ensuring the uniformity of calendering, and solves the problem of cumbersome and time-consuming traditional single-sided manual adjustment.

[0022] The second drive assembly 305 includes a second motor 3051. The output end of the second motor 3051 is provided with a third synchronous pulley 3052. The rotating shafts of the feeding conveyor belt 201, the lower pressure roller 303, and the rotating shafts of the discharging conveyor belt 202 are all provided with fourth synchronous pulleys 3053 on the same side. The third synchronous pulley 3052 is connected to an adjacent set of fourth synchronous pulleys 3053 through a synchronous belt drive. The three sets of fourth synchronous pulleys 3053 are connected to each other in any two adjacent sets through a synchronous belt drive, forming a unified drive link to ensure that the feeding conveyor belt 201, the lower pressure roller 303, and the discharging conveyor belt 202 rotate synchronously, avoiding speed mismatch that could cause the rubber sheet to stretch or wrinkle, significantly improving the calendering and leveling quality, and solving the defect of traditional structures lacking a synchronous drive mechanism.

[0023] Two sets of guide positioning components 4 are mirror images of each other, respectively positioned above one end of the feed conveyor belt 201 and the discharge conveyor belt 202, forming a double limiting structure of pre-positioning at the feed end and repositioning at the discharge end, ensuring that the rubber sheet does not deviate throughout the entire process; the guide positioning component 4 includes a second bracket 401, with a bidirectional lead screw 402 rotatably connected between the two ends of the second bracket 401, and guide members 403 symmetrically arranged at both ends of the bidirectional lead screw 402 through ball nuts, which can realize the synchronous movement of the two sets of guide members 403 in opposite directions to adapt to rubber sheets of different widths, and the two sets of bidirectional lead screws 402 are driven by a third drive component 404; The third drive assembly 404 includes a third motor 4041 fixed on the frame 1. The output end of the third motor 4041 is provided with a fifth synchronous pulley 4042. One end of each of the two sets of bidirectional lead screws 402 is provided with a sixth synchronous pulley 4043. The fifth synchronous pulley 4042 and the two sets of sixth synchronous pulleys 4043 are connected by a synchronous belt to ensure that the two sets of guide and positioning assemblies move in unison, avoid lateral displacement of the rubber sheet, and solve the problems of fixed and poor adaptability of traditional guide structures.

[0024] The second support 401 includes two sets of second vertical plates 4011 and a set of second top plates 4012. The lower surface of the second top plate 4012 is provided with a second sliding groove 4013. The upper end of the guide member 403 is provided with a slider 4014. The slider 4014 is adapted to the second sliding groove 4013 to provide precise guidance for the movement of the guide member 403 and avoid swaying. A receiving plate 4031 is provided on the inner side of one end of the guide member 403. The receiving plate 4031 extends to the junction of the conveyor belt and the lower pressure roller 303, which can fill the gap between the two and effectively prevent the rubber sheet from falling from the gap between the conveyor belt and the lower pressure roller 303, ensuring production continuity and product yield, and solving the defect of no transition structure at the junction of traditional mechanisms.

[0025] Both the infeed conveyor belt 201 and the discharge conveyor belt 202 are made of Teflon-coated conveyor belts to reduce the risk of rubber sheet sticking.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A calendering and leveling mechanism adaptable to rubber sheets of various thicknesses, characterized in that: The machine includes a frame (1), on which an anti-stick conveying assembly (2) and an adjustable calendering assembly (3) are provided. The anti-stick conveying assembly (2) is provided with a guide and positioning assembly (4). The anti-stick conveying assembly (2) includes an infeed conveyor belt (201) and an outfeed conveyor belt (202), which are respectively located at both ends of the frame (1). The adjustable calendering assembly (3) is located between the feed conveyor belt (201) and the discharge conveyor belt (202), and includes a first support (301), an upper pressure roller (302) and a lower pressure roller (303). The first support (301) is mounted on the frame (1). The upper pressure roller (302) is movably connected to the first support (301) through a first drive assembly (304). The lower pressure roller (303) is rotatably connected between the frames (1). The feed conveyor belt (201), the discharge conveyor belt (202) and the lower pressure roller (303) are driven by a second drive assembly (305).

2. The calendering and leveling mechanism adaptable to rubber sheets of multiple thicknesses according to claim 1, characterized in that: The first support (301) includes two sets of first vertical plates (3011) and one set of first top plates (3012). Both sets of first vertical plates (3011) are provided with first sliding grooves (3013), and the outer side of the first vertical plate (3011) is provided with thickness scale lines (3014).

3. The calendering and leveling mechanism adaptable to rubber sheets of multiple thicknesses according to claim 2, characterized in that: The first drive assembly (304) includes an L-shaped slider (3041) slidably connected in the first groove (3013). The two ends of the upper pressure roller (302) are rotatably connected to the L-shaped slider (3041) through bearings. The two ends of the first top plate (3012) are rotatably connected to the first vertical plate (3011) through lead screws (3042). The lead screws (3042) and the L-shaped slider (3041) are connected by ball nuts. A concave frame (3043) is provided on the upper surface of the first top plate (3012), a first motor (3044) is provided on the concave frame (3043), a first synchronous pulley (3045) is provided at the top of the lead screw (3042), and a second synchronous pulley (3046) is provided at the output end of the first motor (3044). The two sets of first synchronous pulleys (3045) and second synchronous pulleys (3046) are connected by synchronous belt phase transmission to ensure that the two sets of lead screws (3042) rotate synchronously.

4. The calendering and leveling mechanism adaptable to rubber sheets of multiple thicknesses according to claim 3, characterized in that: The second drive assembly (305) includes a second motor (3051), and a third synchronous pulley (3052) is provided at the output end of the second motor (3051). The rotating shaft of the feed conveyor belt (201), the lower pressure roller (303), and the rotating shaft of the discharge conveyor belt (202) are all provided with a fourth synchronous pulley (3053) on the same side. The third synchronous pulley (3052) is connected to an adjacent set of the fourth synchronous pulleys (3053) through a synchronous belt drive. The three sets of the fourth synchronous pulleys (3053) are connected to each other in adjacent sets through a synchronous belt drive to ensure that the feed conveyor belt (201), the lower pressure roller (303), and the discharge conveyor belt (202) rotate synchronously.

5. The calendering and leveling mechanism adaptable to rubber sheets of multiple thicknesses according to claim 4, characterized in that: Two sets of the guide positioning components (4) are mirror images of each other, respectively located above the opposite ends of the feed conveyor belt (201) and the discharge conveyor belt (202); the guide positioning components (4) include a second bracket (401), and a bidirectional lead screw (402) is rotatably connected between the two ends of the second bracket (401). The two ends of the bidirectional lead screw (402) are provided with guide members (403) through ball nuts. The two sets of bidirectional lead screws (402) are driven by a third drive component (404); the third drive component (404) includes a third motor (4041), and a fifth synchronous pulley (4042) is provided at the output end of the third motor (4041). A sixth synchronous pulley (4043) is provided at one end of each set of bidirectional lead screws (402). The fifth synchronous pulley (4042) and the two sets of sixth synchronous pulleys (4043) are connected by a synchronous belt.

6. The calendering and leveling mechanism adaptable to rubber sheets of multiple thicknesses according to claim 5, characterized in that: The second support (401) includes two sets of second vertical plates (4011) and a set of second top plates (4012). The lower surface of the second top plate (4012) is provided with a second sliding groove (4013). The upper end of the guide (403) is provided with a slider (4014), which is adapted to the second sliding groove (4013). The inner side of one end of the guide (403) is provided with a receiving plate (4031) to prevent the rubber sheet from falling from the gap between the conveyor belt and the lower pressure roller (303).

7. The calendering and leveling mechanism adaptable to rubber sheets of multiple thicknesses according to claim 6, characterized in that: Both the feeding conveyor belt (201) and the discharging conveyor belt (202) are Teflon-coated conveyor belts to reduce the risk of rubber sheet sticking.

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