Sealed mixing devices for rubber production

Abstract

The present invention provides a sealed mixing device for rubber production and manufacturing, comprising a base, a support seat, a mixing box, a first driving mechanism, a second driving mechanism and a power transmission mechanism. A mounting platform is provided on the top of the base. Two support seats are provided, and the two support seats are arranged on the mounting platform at intervals. The mixing box is rotatably arranged on the two support seats. The first driving mechanism can drive the stirring part in the mixing chamber to work. The second driving mechanism includes a first worm gear and a first worm connected to the mixing box. The first worm can drive the mixing box to pitch downward and rotate through the first worm gear, and is connected to the first driving mechanism through a power transmission mechanism. The sealed mixing device for rubber production and manufacturing provided by the present invention can realize the transmission of large torque, has good self-locking performance, high stability, is not easy to damage, and effectively avoids problems such as leakage and deformation caused by the use of hydraulic cylinders, thereby ensuring the continuity of rubber production and having strong practicality.

Description

Technical Field

[0001] The invention belongs to the technical field of rubber production equipment, and in particular relates to a sealed mixing device for rubber production. Background Art

[0002] The production process of rubber usually involves a sealed mixing device, namely an internal mixer, which is mainly used to mix raw rubber and various compounding agents under high temperature and high pressure conditions to prepare a uniform mixed rubber. The mixing chamber of the internal mixer is usually equipped with two rotors, and the rotating shafts of the two rotors are meshed through the gears connected to the rotating shafts to achieve synchronous rotation to ensure sufficient mixing of the raw rubber and the compounding agents. At the same time, one of the rotor shafts will be connected to the drive.

[0003] In the prior art, after the mixing is completed, the internal mixer will involve unloading. During this process, the mixing box is usually driven to flip (pitch and rotate downward) through a telescopic structure to facilitate the transfer of the mixed material to the receiving end of the molding process. The mixing box is large in size and weight, so it is necessary to set a corresponding telescopic structure with high power, usually a hydraulic cylinder, and a hydraulic pump. However, during use, the telescopic structure is often repaired or replaced due to malfunctions, such as leakage or deformation, which directly affects the continuity of production and has poor practicality. Summary of the invention

[0004] The embodiment of the present invention provides a sealed mixing device for rubber production, aiming to solve the problem of poor practicality of the existing internal mixer due to the easy damage of the hydraulic telescopic structure used in the unloading process.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a sealed mixing device for rubber production, comprising:

[0006] A base having a mounting platform on the top;

[0007] There are two support seats, and the two support seats are arranged on the mounting platform at intervals;

[0008] A mixing box is rotatably arranged on the two support seats, and the mixing box has a mixing cavity with an open top; a stirring part is arranged in the mixing cavity;

[0009] A first driving mechanism, fixedly mounted on the mounting platform, for driving the stirring part to work;

[0010] The second driving mechanism includes a first worm wheel and a first worm; the first worm wheel is located in one of the supporting seats and is fixedly connected to the mixing box, and the axis of the first worm wheel is colinearly arranged with the rotation axis of the mixing box; the first worm is rotatably arranged on the supporting seat and meshes with the first worm wheel, and the first worm is used to drive the first worm wheel to rotate, thereby driving the mixing box to pitch downward to correspond to the opening and the material receiving end of the molding process; the first worm is connected to a power transmission mechanism, and the power transmission mechanism can be connected to the first driving mechanism in power.

[0011] In a possible implementation, the first driving mechanism includes:

[0012] A reducer having a power input end and a power output end, wherein the power input end is connected to a first pulley, and the power output end is connected to a drive shaft, and the drive shaft is used to drive the stirring part;

[0013] A driving motor, a power end of which is connected to a second pulley arranged corresponding to the first pulley;

[0014] The transmission belt is annularly wound around the outer circumference of the first pulley and the second pulley.

[0015] In a possible implementation manner, a diameter of the first pulley is greater than a diameter of the second pulley.

[0016] In a possible implementation, the mixing box includes:

[0017] The flip box is located between the two support seats, and the flip box is provided with two transfer shafts which can be rotatably connected to the support seats respectively; one of the transfer shafts is coaxially connected to the first worm gear; the inner cavity of the flip box is the mixing cavity;

[0018] A driving shaft is rotatably arranged on the flip box and is arranged colinearly with the axis of each of the adapter shafts. A first stirring member is fixedly arranged on the portion of the driving shaft located in the mixing chamber. One end of the driving shaft extends out of the flip box at the other support seat and is connected to the drive shaft. A driving gear is fixedly connected to the extended end of the driving shaft.

[0019] A driven shaft is rotatably arranged on the flip box and spaced apart from the driving shaft. A second stirring member is fixedly arranged on the portion of the driven shaft located in the mixing chamber. One end of the driven shaft extends out of the flip box at the other support seat and is fixedly connected with a driven gear, which meshes with the driving gear.

[0020] Wherein, the first stirring member and the second stirring member are combined to form a stirring portion.

[0021] In a possible implementation, the active shaft and the drive shaft are connected via a coupling.

[0022] In a possible implementation, the power transmission mechanism includes:

[0023] A transmission shaft is rotatably disposed in the base,

[0024] A speed reduction connection assembly, which is arranged on the base and is dynamically connected to one end of the transmission shaft, and the speed reduction connection assembly is also dynamically connected to the first worm;

[0025] A power connection assembly is arranged on the mounting platform and has a power contact end that can be connected to the power of the transmission belt; the power connection assembly is connected to the other end of the transmission shaft for transmitting the power of the transmission belt to the transmission shaft.

[0026] In a possible implementation, the deceleration connection assembly includes:

[0027] a second worm gear rotatably disposed in the base;

[0028] a second worm, coaxially connected to the transmission shaft and meshing with the second worm wheel;

[0029] A reduction gear set, an input end of which is coaxially connected to the second worm gear, and an input end of which is coaxially connected to the first worm gear.

[0030] In a possible implementation, the transmission belt has an upper linear conveying portion and a lower linear conveying portion between the first pulley and the second pulley;

[0031] The power connection assembly comprises:

[0032] A fixed box, arranged between the first pulley and the second pulley, wherein the interior of the fixed box has a guide rail arranged along a vertical direction;

[0033] A sliding frame, slidably arranged on the guide rail;

[0034] An electric push rod is arranged in the fixed box and connected to the sliding frame, and is used to drive the sliding frame to move up and down;

[0035] An upper pulley is rotatably arranged on the sliding frame, and the rotation axis is arranged parallel to the axis of the first pulley; the upper pulley is located above the upper linear conveying portion; the upper pulley is coaxially connected to the upper gear;

[0036] A lower pulley is rotatably arranged on the slide frame, and the rotation axis is arranged parallel to the axis of the upper pulley; the lower pulley is located below the upper linear conveying portion; the lower pulley is coaxially connected to the lower gear, and the diameter of the lower gear is equal to that of the upper gear;

[0037] An intermediate gear is rotatably disposed on the slide frame and meshes with the upper gear and the lower gear; the diameter of the intermediate gear is larger than that of the lower pulley;

[0038] A retractable universal coupling, one end of which is connected to the transmission shaft and the other end of which is connected to the rotating shaft of the intermediate gear;

[0039] The electric push rod pushes the slide frame to move up and down, so that the upper pulley or the lower pulley is respectively connected to the upper linear conveying part by power.

[0040] In a possible implementation, the sealed mixing device for rubber production further includes a pressing mechanism, and the pressing mechanism includes:

[0041] A hanger, fixedly mounted on the mounting platform, having a mounting end located above the mixing box;

[0042] The telescopic structure is fixedly arranged on the mounting end and has a telescopic end which can move along the vertical direction. The telescopic end is fixedly connected with an extrusion plate which can extend into the opening of the mixing cavity.

[0043] In this implementation, the first driving mechanism can ensure that power is transmitted to the stirring part in the mixing box, thereby ensuring that the stirring part mixes the raw materials. The second driving mechanism can ensure that the mixing box is driven to flip on the two support seats, and can ensure that the opening corresponds to the receiving end of the molding process, which is convenient for the unloading of materials. The second driving mechanism drives the first worm wheel to rotate through the first worm to realize the flipping drive of the mixing box, which can realize the transmission of large torque, and has good self-locking performance, high stability, and is not easy to damage. It effectively avoids problems such as leakage and deformation caused by the use of hydraulic cylinders, ensures the continuity of rubber production, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic diagram of the structure of a sealed mixing device for rubber production provided in an embodiment of the present invention Figure 1 ;

[0045] Figure 2 A schematic diagram of the structure of a sealed mixing device for rubber production provided in an embodiment of the present invention Figure 2 (The housings of the driving gear and the driven gear are removed);

[0046] Figure 3 A schematic diagram of the structure of a sealed mixing device for rubber production provided in an embodiment of the present invention Figure 3 ;

[0047] Figure 4 A schematic diagram of the structure of a sealed mixing device for rubber production provided in an embodiment of the present invention Figure 4 (the support seat corresponding to the second driving mechanism is hidden);

[0048] Figure 5 A schematic plan view of the power transmission mechanism of a sealed mixing device for rubber production and manufacturing provided by an embodiment of the present invention;

[0049] Figure 6 A schematic cross-sectional view of the power connection assembly in a sealed mixing device for rubber production provided in an embodiment of the present invention.

[0050] Description of reference numerals:

[0051] 10. Base;

[0052] 20. Support seat;

[0053] 30. Mixing box; 31. Turning box; 32. Driving shaft; 33. Driven shaft; 34. Coupling; 35. Driving gear; 36. Driven gear;

[0054] 40. first driving mechanism; 41. speed reducer; 42. driving motor; 43. transmission belt; 431. upper linear conveying part; 44. first pulley; 45. second pulley;

[0055] 50. Second driving mechanism; 51. First worm gear; 52. First worm;

[0056] 60. Pressing mechanism; 61. Hanging bracket; 62. Telescopic structure;

[0057] 70. Power transmission mechanism; 71. Drive shaft; 72. Reduction connection assembly; 721. Second worm gear; 722. Second worm; 723. Reduction gear set; 73. Power connection assembly; 731. Fixed box; 732. Sliding frame; 733. Electric push rod; 734. Upper pulley; 735. Lower pulley; 736. Intermediate gear; 737. Retractable universal joint; 738. Upper gear; 739. Lower gear. DETAILED DESCRIPTION

[0058] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0059] Please also read Figures 1 to 4, the sealed mixing device for rubber production and manufacturing provided by the present invention is now described. The sealed mixing device for rubber production and manufacturing includes a base 10, a support seat 20, a mixing box 30, a first driving mechanism 40, a second driving mechanism 50 and a power transmission mechanism 70. A mounting platform is provided on the top of the base 10. Two support seats 20 are provided, and the two support seats 20 are arranged on the mounting platform at intervals. The mixing box 30 is rotatably arranged on the two support seats 20, and the mixing box 30 has a mixing chamber with an open top. A stirring part is provided in the mixing chamber. The first driving mechanism 40 is fixedly arranged on the mounting platform and can drive the stirring part to work. The second driving mechanism 50 includes a first worm gear 51 and a first worm 52. The first worm gear 51 is located in one of the support seats 20 and is fixedly connected to the mixing box 30. The axis of the first worm gear 51 is arranged colinearly with the rotation axis of the mixing box 30. The first worm 52 is rotatably disposed on the support base 20 and meshes with the first worm wheel 51. The first worm 52 can drive the first worm wheel 51 to rotate, thereby driving the mixing box 30 to pitch downward to an open opening corresponding to the material receiving end of the molding process. The first worm 52 is connected to a power transmission mechanism 70, which can be power-connected to the first driving mechanism 40.

[0060] Compared with the prior art, the sealed mixing device for rubber production provided in this embodiment has a first driving mechanism 40 that can ensure that power is transmitted to the stirring part in the mixing box 30, thereby ensuring that the stirring part mixes the raw materials. The second driving mechanism 50 can ensure that the mixing box 30 is driven to flip on the two support seats 20, and can ensure that the opening corresponds to the receiving end of the molding process, which is convenient for the unloading of materials. The second driving mechanism 50 drives the first worm gear 51 to rotate through the first worm 52 to realize the flipping drive of the mixing box 30, which can realize the transmission of large torque, and has good self-locking performance, high stability, and is not easy to damage. It effectively avoids problems such as leakage and deformation caused by the use of hydraulic cylinders, ensures the continuity of rubber production, and is highly practical.

[0061] In some embodiments, the first driving mechanism 40 may be configured as follows: Figure 1 to Figure 2 See the structure shown. Figure 1 to Figure 2 The first driving mechanism 40 includes a reducer 41, a driving motor 42 and a transmission belt 43. The reducer 41 has a power input end and a power output end, the power input end is connected to a first pulley 44, and the power output end is connected to a driving shaft, and the driving shaft can drive the stirring part. The power end of the driving motor 42 is connected to a second pulley 45 corresponding to the first pulley 44. The transmission belt 43 is annularly wound around the outer circumference of the first pulley 44 and the second pulley 45.

[0062] The mixing of rubber requires a large torque, but the stirring speed requirement is not high, so the setting of the reducer 41 can ensure that the power of the drive motor 42 is decelerated, while increasing the torque, and protecting the drive motor 42. The drive motor 42 and the reducer 41 are connected to each other through the first pulley 44, the second pulley 45 and the transmission belt 43. The structure is simple, the cost is low, and it is easy to maintain. In addition, the transmission process can ensure stability and reduce vibration and impact.

[0063] It should be noted that the reducer 41 can be a two-stage gear reducer.

[0064] In some embodiments, the first driving mechanism 40 may be configured as follows: Figure 1 to Figure 2 See the structure shown. Figure 1 to Figure 2 The diameter of the first pulley 44 is greater than the diameter of the second pulley 45. This structure can further ensure that the power from the drive motor 42 to the reducer 41 is decelerated to ensure that the torque at the power output end of the reducer 41 is increased.

[0065] In some embodiments, the mixing box 30 may be configured as follows: Figure 1 to Figure 2 See the structure shown. Figure 1 to Figure 2 The mixing box 30 includes a flip box body 31, a driving shaft 32, a driven shaft 33, a first gear and a second gear. The flip box body 31 is located between the two support seats 20, and the flip box body 31 is provided with two adapter shafts that can be rotatably connected to each support seat 20 respectively. One of the adapter shafts is coaxially connected to the first worm gear 51. The inner cavity of the flip box body 31 is a mixing cavity. The driving shaft 32 is rotatably set on the flip box body 31, and is colinearly arranged with the axis of each adapter shaft. A first stirring member is fixedly provided on the part of the driving shaft 32 located in the mixing cavity. One end of the driving shaft 32 extends out of the flip box body 31 at another support seat 20 and is connected to the drive shaft. The extended end of the driving shaft 32 is fixedly connected with a driving gear 35. The driven shaft 33 is rotatably disposed on the flip box 31 and is spaced apart from the driving shaft 32. A second stirring member is fixedly disposed on the portion of the driven shaft 33 located in the mixing chamber. One end of the driven shaft 33 extends out of the flip box 31 at another support seat 20 and is fixedly connected to a driven gear 36, which meshes with the driving gear 35.

[0066] Specifically, the first stirring member and the second stirring member are combined to form a stirring portion, and the structures of the first stirring member and the second stirring member are both prior art, such as a spiral type, which will not be described in detail herein.

[0067] The mixing box 30 is rotatably arranged on the two support seats 20 through two adapters. Specifically, a rotating hole for rotatably connecting the adapter shaft can be arranged on the support seat 20, that is, the mixing box 30 is independently rotatably connected to the two support seats 20. The first worm wheel 51 and the first worm 52 in the second driving mechanism 50 are both located on one of the support seats 20 and fixedly connected to the corresponding adapter shaft, which can ensure that the first worm 52 drives the first worm wheel 51 and directly drives the mixing box 30 to pitch and rotate on the two support seats 20. The driving shaft 32 and the driven shaft 33 are both rotatably arranged on the mixing box 30, and one end of both of them extends out of the mixing box 30 in the direction of the other support seat 20, and the driving gear 35 at the extended end of the driving shaft 32 is meshed with the driven gear 36 at the extended end of the driven shaft 33, which can ensure that the driven shaft 33 can rotate in the opposite direction at the same time as the driving shaft 32. The axis of the driving shaft 32 is arranged colinearly with the axis of the transfer shaft, and the driving shaft 32 is independently connected to the mixing box 30 for rotation, and is located at the center of the transfer shaft, which can ensure that during the pitching and rotation of the mixing box 30, the driving shaft 32 and the driven shaft 33 rotate independently, and there is no interference between the two actions. The driving shaft 32 is connected to the drive shaft connected to the power output end of the reducer 41, which can ensure the transmission of power.

[0068] It should be noted that both the driving shaft 32 and the driven shaft 33 are connected to the mixing box 30 in a sealed rotational manner.

[0069] It should also be noted that a housing may be provided outside the driving gear 35 and the driven gear 36 .

[0070] In some embodiments, the driving shaft 32 may be Figure 2 See the structure shown. Figure 2 The driving shaft 32 is connected to the drive shaft through a coupling 34. This structure is easy to install, simple in structure, and convenient to operate.

[0071] In some embodiments, the power transmission mechanism 70 may be configured as follows: Figure 1 , Figure 3 and Figure 5 See the structure shown. Figure 2 The power transmission mechanism 70 includes a transmission shaft 71, a reduction connection assembly 72 and a power connection assembly 73. The transmission shaft 71 is rotatably arranged in the base 10, the reduction connection assembly 72 is arranged on the base 10 and is power-connected to one end of the transmission shaft 71, and the reduction connection assembly 72 is also power-connected to the first worm 52. The power connection assembly 73 is arranged on the mounting platform and has a power contact end that can be power-connected to the transmission belt 43. The power connection assembly 73 is power-connected to the other end of the transmission shaft 71, and can transmit the power of the transmission belt 43 to the transmission shaft 71.

[0072] The transmission shaft 71 can ensure compensation for the distance between the first driving mechanism 40 and the first worm 52 , and the transmission shaft 71 can also facilitate the installation and connection of the reduction connection assembly 72 and the power connection assembly 73 .

[0073] It should be noted that the power transmission mechanism 70 may also include a rotation counter and a control unit. The rotation counter may be arranged in the base 10, corresponding to the transmission shaft 71, and the rotation counter is electrically connected to the control unit, which can calculate the number of rotations of the transmission shaft 71, thereby facilitating the accurate control of the flip angle of the mixing box 30 and improving the unloading quality. The control unit is also electrically connected to the power connection assembly 73 to ensure that the time of power contact with the first drive mechanism 40 is controlled.

[0074] In some embodiments, the above-mentioned speed reduction connection assembly 72 can be adopted as follows Figure 5 See the structure shown. Figure 5 The reduction connection assembly 72 includes a second worm wheel 721, a second worm 722 and a reduction gear set 723. The second worm wheel 721 is rotatably arranged in the base 10. The second worm 722 is coaxially connected to the transmission shaft 71 and meshes with the second worm wheel 721. The input end of the reduction gear set 723 is coaxially connected to the second worm wheel 721, and the input end is coaxially connected to the first worm 52.

[0075] The second worm wheel 721 and the second worm 722 can also achieve the transmission of a large torque. Through the reduction gear set 723, the output end connected to the first worm 52 can be reduced in speed, and at the same time, the torque of the first worm 52 can be increased, thereby adapting to the flipping drive of the heavy mixing box 30. The reduction gear set 723, the second worm 722 and the second worm wheel 721 can also ensure that the power from the first power mechanism is decelerated to ensure that the mixing box 30 can smoothly perform the flipping and unloading work.

[0076] It should be noted that the reduction gear set 723 is a prior art, and its installation and connection are well known to those skilled in the art, and do not require creative work, so they will not be elaborated here.

[0077] In some embodiments, the power connection assembly 73 may be configured as follows: Figures 5 and 6 See the structure shown. Figures 5 and 6 The transmission belt 43 is between the first pulley 44 and the second pulley 45 and the upper linear conveying portion 431 and the lower linear conveying portion.

[0078] The power connection assembly 73 includes a fixed box 731, a sliding frame 732, an electric push rod 733, an upper pulley 734, a lower pulley 735, an intermediate gear 736 and a retractable universal coupling 737. The fixed box 731 is arranged between the first pulley 44 and the second pulley 45, and the interior of the fixed box 731 has a guide rail arranged along the vertical direction. The sliding frame 732 is slidably arranged on the guide rail. The electric push rod 733 is arranged in the fixed box 731 and is connected to the sliding frame 732, and can drive the sliding frame 732 to move up and down. The upper pulley 734 is rotatably arranged on the sliding frame 732, and the rotation axis is arranged parallel to the axis of the first pulley 44. The upper pulley 734 is located above the upper linear conveying part 431. The upper pulley 734 is coaxially connected to the upper gear 738. The lower pulley 735 is rotatably arranged on the sliding frame 732, and the rotation axis is arranged parallel to the axis of the upper pulley 734. The lower pulley 735 is located below the upper linear conveying portion 431. The lower pulley 735 is coaxially connected to the lower gear 739, and the diameter of the lower gear 739 is equal to that of the upper gear 738. The intermediate gear 736 is rotatably arranged on the slide frame 732 and meshes with the upper gear 738 and the lower gear 739. The diameter of the intermediate gear 736 is larger than that of the lower pulley 735. One end of the telescopic universal coupling 737 is connected to the transmission shaft 71, and the other end is connected to the rotating shaft of the intermediate gear 736.

[0079] The electric push rod 733 pushes the slide frame 732 to move up and down, so that the upper pulley 734 or the lower pulley 735 is connected to the upper linear conveying part 431 by power.

[0080] The first worm 52 has two rotation modes, namely forward rotation and reverse rotation. For example, after forward rotation, the mixing box 30 pitches downward to unload, and after reverse rotation, the mixing box 30 pitches upward to the mixing chamber to be vertically arranged. Therefore, correspondingly, the reduction connection assembly 72 and the transmission shaft 71 have two different rotation directions.

[0081] In this regard, in the power connection assembly 73, the sliding frame 732 is slidably arranged on the guide rail in the fixed box 731, and can be lifted and lowered under the drive of the electric push rod 733, thereby ensuring that the bottom end of the upper pulley 734 or the top end of the lower pulley 735 is in contact with the upper linear conveying part 431 and collects its power, and at the same time, the power is transmitted to the transmission shaft 71 through the intermediate gear 736 and the telescopic universal coupling 737. This structure can ensure that the mixing box 30 can be turned over by only one first driving mechanism 40, and can also drive each stirring part to work, saving the cost of the equipment. The upper pulley 734 and the lower pulley 735 can both extend out of the fixed box 731, and a vertical opening can be provided on the fixed box 731. At the same time, the upper linear conveying part 431 is used as the position for power collection, which can ensure that the lower pulley 735 has a large moving space and can also be easy to install.

[0082] The telescopic universal coupling 737 is prior art and will not be described in detail here.

[0083] In this embodiment, because the conveying direction of the upper linear conveying part 431 remains unchanged, the bottom end of the upper pulley 734 or the top end of the lower pulley 735 contacts the upper linear conveying part 431 respectively, thereby ensuring that the rotation direction of the intermediate gear 736 is reversed, thereby adapting to the forward and reverse rotation of the first worm gear 52.

[0084] In addition, the diameter of the middle gear 736 is larger than the diameters of the upper gear 738 and the lower gear 739, which can ensure the deceleration effect.

[0085] It should be noted that the setting of the electric push rod 733 only needs to ensure that the upper pulley 734 and the lower pulley 735 can contact the transmission belt 43 and realize power collection. Its thrust does not need to be high, which can reduce costs. At the same time, it does not have the problem of leakage, and it is subjected to small force, not easy to be damaged, and easy to control.

[0086] In some embodiments, see Figure 1 and Figure 2 The sealed mixing device for rubber production also includes a pressing mechanism 60, which includes a hanger 61 and a telescopic structure 62. The hanger 61 is fixed on the mounting platform and has a mounting end located above the mixing box 30. The telescopic structure 62 is fixed on the mounting end and has a telescopic end that can move in the vertical direction. The telescopic end is fixedly connected to an extrusion plate that can extend into the opening of the mixing chamber.

[0087] The pressing mechanism 60 can seal the opening of the mixing chamber through the extrusion plate, and at the same time can extrude the material in the mixing chamber to achieve mixing and ensure the mixing effect of the rubber. This technology is existing technology and will not be described in detail here.

[0088] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealed mixing device for rubber production, characterized in that: include: A base having a mounting platform on the top; There are two support seats, and the two support seats are arranged on the mounting platform at intervals; A mixing box is rotatably arranged on the two support seats, and the mixing box has a mixing cavity with an open top; a stirring part is arranged in the mixing cavity; A first driving mechanism, fixedly mounted on the mounting platform, for driving the stirring part to work; the first driving mechanism comprises a reducer, a driving motor and a transmission belt; The reducer has a power input end and a power output end, the power input end is connected to a first pulley, the power output end is connected to a driving shaft, and the driving shaft is used to drive the stirring part; the power end of the driving motor is connected to a second pulley corresponding to the first pulley; the transmission belt is annularly wound around the outer circumference of the first pulley and the second pulley; the transmission belt is provided with an upper linear conveying part and a lower linear conveying part between the first pulley and the second pulley; The second driving mechanism comprises a first worm wheel and a first worm; the first worm wheel is located in one of the supporting seats and is fixedly connected to the mixing box, and the axis of the first worm wheel is arranged in a colinear manner with the rotation axis of the mixing box; the first worm is rotatably arranged on the supporting seat and meshes with the first worm wheel, and the first worm is used to drive the first worm wheel to rotate, thereby driving the mixing box to pitch downward to correspond to the opening and the receiving end of the molding process; the first worm is connected to a power transmission mechanism, and the power transmission mechanism can be connected to the first driving mechanism by power; the power transmission mechanism comprises a transmission shaft, a reduction connection assembly and a power connection assembly; the transmission shaft is rotatably arranged in the base; the reduction connection assembly is arranged on the base and is connected to one end of the transmission shaft by power, and the reduction connection assembly is also connected to the first worm by power; the power connection assembly is arranged on the mounting platform and has a power contact end that can be connected to the transmission belt by power; the power connection assembly is connected to the other end of the transmission shaft by power, and is used to transmit the power of the transmission belt to the transmission shaft; Wherein, the power connection assembly includes a fixed box, a sliding frame, an electric push rod, an upper pulley, a lower pulley, an intermediate gear and a retractable universal coupling; the fixed box is arranged between the first pulley and the second pulley, and the interior of the fixed box has a guide rail arranged along the vertical direction; the sliding frame is slidably arranged on the guide rail; the electric push rod is arranged in the fixed box and is connected to the sliding frame for driving the sliding frame to move up and down; the upper pulley is rotatably arranged on the sliding frame, and the rotation axis is arranged parallel to the axis of the first pulley; the upper pulley is located above the upper linear conveying part; the upper pulley is coaxially connected to the upper gear; The lower pulley is rotatably arranged on the sliding frame, and the rotation axis is arranged parallel to the axis of the upper pulley; the lower pulley is located below the upper linear conveying part; the lower pulley is coaxially connected to the lower gear, and the diameter of the lower gear is equal to that of the upper gear; the intermediate gear is rotatably arranged on the sliding frame, and meshes with the upper gear and the lower gear; the diameter of the intermediate gear is larger than that of the lower pulley; one end of the retractable universal coupling is connected to the transmission shaft, and the other end is connected to the rotating shaft of the intermediate gear; the electric push rod drives the sliding frame to move up and down, so that the upper pulley or the lower pulley is respectively connected to the power of the upper linear conveying part.

2. The sealed mixing device for rubber production as claimed in claim 1, characterized in that: The diameter of the first pulley is greater than the diameter of the second pulley.

3. The sealed mixing device for rubber production as claimed in claim 1, characterized in that: The mixing box comprises: The flip box is located between the two support seats, and the flip box is provided with two transfer shafts which can be rotatably connected to the support seats respectively; one of the transfer shafts is coaxially connected to the first worm gear; the inner cavity of the flip box is the mixing cavity; A driving shaft is rotatably arranged on the flip box and is arranged colinearly with the axis of each of the adapter shafts. A first stirring member is fixedly arranged on the portion of the driving shaft located in the mixing chamber. One end of the driving shaft extends out of the flip box at the other support seat and is connected to the drive shaft. A driving gear is fixedly connected to the extended end of the driving shaft. A driven shaft is rotatably arranged on the flip box and spaced apart from the driving shaft. A second stirring member is fixedly arranged on the portion of the driven shaft located in the mixing chamber. One end of the driven shaft extends out of the flip box at the other support seat and is fixedly connected with a driven gear, which meshes with the driving gear. Wherein, the first stirring member and the second stirring member are combined to form a stirring portion.

4. The sealed mixing device for rubber production as claimed in claim 3, characterized in that: The active shaft is connected to the drive shaft via a coupling.

5. The sealed mixing device for rubber production as claimed in claim 1, characterized in that: The deceleration connection assembly comprises: a second worm gear rotatably disposed in the base; a second worm, coaxially connected to the transmission shaft and meshing with the second worm wheel; A reduction gear set, an input end of which is coaxially connected to the second worm gear, and an input end of which is coaxially connected to the first worm gear.

6. The sealed mixing device for rubber production as claimed in claim 1, characterized in that: The sealed mixing device for rubber production also includes a pressing mechanism, which includes: A hanger, fixedly mounted on the mounting platform, having a mounting end located above the mixing box; The telescopic structure is fixedly arranged on the mounting end and has a telescopic end which can move along the vertical direction. The telescopic end is fixedly connected with an extrusion plate which can extend into the opening of the mixing cavity.

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