Automatic centering device for discharge door of internal mixer

Abstract

The utility model discloses an automatic centering device for a discharge door of an internal mixer, which relates to the technical field of internal mixers and comprises a mounting frame, a collecting tank is fixedly connected to the bottom of an inner cavity of the mounting frame, a hydraulic cylinder is fixedly connected to the top of the mounting frame, and teeth are fixedly connected to the bottom of the right side of a piston rod of the hydraulic cylinder. The middle of an inner cavity of the mounting frame is fixedly connected with a rotating shaft. According to the utility model, through the matching among the discharging door base, the discharging door and the butterfly-shaped elastic sheet, when the outer wall of the discharging door enters the inner cavity of the mixing machine, the small inclined surface at the top of the discharging door is in contact with the inclined surface of the feeding hole at the top of the mixing machine, and the butterfly-shaped elastic sheet enables the discharging door to be in a floating state, so that the discharging door has an automatic centering function; and when the discharging door is heated to expand and slightly deforms, the deformation amount can be compensated through compression of the butterfly-shaped elastic piece, so that the phenomenon that the discharging door cannot be opened or closed due to deformation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a closed mill technical field, concretely is a closed mill unloading door automatic centering device. BACKGROUND

[0002] The closed rubber mixing mill is called the closed mill, and is mainly used for plasticizing and mixing rubber; the closed mill is a kind of machinery that is provided with a pair of specific shape and opposite rotary rotors, and carries out plasticizing and mixing of polymer materials in the state of adjustable temperature and pressure, and is composed of a mixing chamber, rotors, rotor sealing devices, feeding and pressing devices, unloading devices, transmission devices and a base, wherein the installation precision of the unloading door is very important, if the centering degree is poor, it will cause the leakage of rubber mixing material and affect the rubber mixing quality, and it can also cause eccentric wear and reduce the service life of the equipment, when the unloading door in the prior art is slightly deformed due to thermal expansion, the cooperation between the small inclined surface of the unloading door and the inclined surface of the mixing chamber of the closed mill is invalid, the unloading door is stuck and cannot be opened or closed, which affects the unloading and the efficiency of the whole rubber mixing.

[0003] For example, the patent with the authorized announcement number CN215969549U records a kind of hydraulic type unloading door mechanism of closed mill, it is opened by the cooperation between electric telescopic rod, gear, first bevel gear and second bevel gear, not only can automatically open and close door, it is convenient for subsequent unloading;It can also automatically overturn the mixing machine, and then automatically transport material to receiving tank, without the participation of staff, improve the efficiency of unloading, but it is inconvenient to add lubricant to gear during use, leading to the precision of gear is reduced after long-term use, which will affect the operation of unloading door when sealing, and the existing unloading door cannot be combined with the closed mill tightly when slightly deformed due to thermal expansion, which reduces the practicability of the device.

[0004] Based on this, a kind of closed mill unloading door automatic centering device is provided, which can eliminate the drawbacks of existing devices. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of closed mill unloading door automatic centering device to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model provides an automatic centering device of banburying machine discharge door, including the bottom fixedly connected with collecting groove in the cavity of mounting frame, the top of mounting frame is fixedly connected with hydraulic cylinder, the bottom fixedly connected with tooth in the right side of hydraulic cylinder piston rod, the middle part fixedly connected with rotating shaft in the cavity of mounting frame, one end of rotating shaft is rotatably connected with mixing machine, the top of mounting frame cavity is fixedly connected with connecting rod no.

[0008] On the basis of the above technical scheme, the utility model further provides the following optional technical scheme:

[0009] In an optional scheme: the discharge door mechanism includes discharge door base and column pin bolt, the top of discharge door base wall is inserted with the top of column pin bolt, the top of discharge door base is fixedly connected with the bottom of hydraulic cylinder piston rod, the bottom of discharge door base is connected with discharge door through the thread of column pin bolt, the outer wall of discharge door is inserted with the top of mixing machine, the top of discharge door is equipped with circular recess, and the butterfly spring is arranged in the circular recess, the inner wall of butterfly spring is inserted with the outer wall of column pin bolt, and the top of butterfly spring is overlapped with the bottom of discharge door base.

[0010] In an optional scheme: the circular recess of the top of discharge door is adapted to the shape of butterfly spring.

[0011] In an optional scheme: there is a certain floatable gap between discharge door base and discharge door.

[0012] In an optional scheme: the feed inlet of the top of mixing machine has inclination, and is adapted to the small slope of the top of discharge door.

[0013] In an optional scheme: the turnover mechanism includes gear box, the top of gear box is fixedly connected with the bottom of connecting rod no., the rear portion of gear box is rotatably connected with rotating rod no.

[0014] In an alternative, the gear outer wall teeth spacing and size are adapted to the hydraulic cylinder piston rod bottom teeth spacing and size.

[0015] In an alternative, the gear box top is fixedly connected with a connecting pipe, and the connecting pipe top penetrates the outer wall of the mounting frame top.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1、The utility model discloses a cooperation between the unloading door base, the unloading door and the butterfly spring piece, when the outer wall of the unloading door enters the inner cavity of the mixer, the small inclined plane of the unloading door top contacts the inclined plane of the mixer top feed port, and the butterfly spring piece makes the unloading door in the floating state, has the automatic centering function, and when the unloading door is slightly deformed due to thermal expansion, the deformation amount can be compensated through the compression of the butterfly spring piece, so that the phenomenon that the unloading door cannot be opened or closed due to deformation is avoided.

[0018] 2、The utility model discloses a cooperation between the connecting pipe and the gear box, through the connecting pipe, different gears in the gear box can be more conveniently added with lubricant, the service life is increased, and the precision is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole structure schematic view of the utility model.

[0020] Figure 2 It is the cut structure schematic view of the utility model.

[0021] Figure 3 It is the structure schematic view of the unloading door mechanism of the utility model.

[0022] Figure 4 It is the structure schematic view of the turnover mechanism of the utility model.

[0023] Mark annotation: 1, mounting frame;11, collection groove;12, hydraulic cylinder;13, mixer;14, rotating shaft;15, connecting rod one;16, connecting rod two;2, unloading door mechanism;21, unloading door base;22, unloading door;23, column pin bolt;24, butterfly spring piece;3, turnover mechanism;31, gear box;311, connecting pipe;32, rotating rod one;33, gear;34, bevel gear one;35, bevel gear two;36, rotating rod two;37, pulley one;38, synchronous belt;39, pulley two. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further explained in detail in connection with the drawings and examples.

[0025] In one embodiment, as shown in Figures 1-4 An automatic centering device for an unloading door of an internal mixer includes a mounting frame 1, a collecting groove 11 fixedly connected to the bottom of the inner cavity of the mounting frame 1, a hydraulic cylinder 12 fixedly connected to the top of the mounting frame 1, a gear fixedly connected to the bottom of the right side of the piston rod of the hydraulic cylinder 12, a rotating shaft 14 fixedly connected to the middle of the inner cavity of the mounting frame 1, a mixer 13 rotatably connected to one end of the rotating shaft 14, a connecting rod one 15 and a connecting rod two 16 fixedly connected to the top of the inner cavity of the mounting frame 1, an unloading door mechanism 2 fixedly connected to the bottom of the piston rod of the hydraulic cylinder 12, and a turnover mechanism 3 fixedly connected to the bottom of the connecting rod one 15.

[0026] In this embodiment, the unloading door mechanism 2 and the turnover mechanism 3 cooperate with each other to block the mixer 13, and the unloading door mechanism 2 ensures the sealing of the mixer 13 to avoid air and liquid leakage.

[0027] In an alternative embodiment, as shown in Figures 1-3 The unloading door mechanism 2 includes an unloading door base 21 and a dowel bolt 23, the inner wall of the unloading door base 21 is inserted into the top of the dowel bolt 23, the top of the unloading door base 21 is fixedly connected to the bottom of the piston rod of the hydraulic cylinder 12, the bottom of the unloading door base 21 is threadedly connected with the unloading door 22 through the dowel bolt 23, the outer wall of the unloading door 22 is inserted into the top of the mixer 13, a circular groove is formed in the top of the unloading door 22, a butterfly spring 24 is arranged in the circular groove, the inner wall of the butterfly spring 24 is inserted into the outer wall of the dowel bolt 23, the top of the butterfly spring 24 is overlapped with the bottom of the unloading door base 21, the unloading door base 21 and the unloading door 22 are connected through the dowel bolt 23, and then the gap between the unloading door base 21 and the unloading door 22 can be adjusted through the dowel bolt 23. The gap is provided with an up-and-down floating elastic force by the butterfly spring 24. Subsequently, when the unloading door 22 is slightly deformed due to thermal expansion, the deformation amount can be compensated by the compression of the butterfly spring 24, so as to avoid the phenomenon that the unloading door 22 cannot be opened or closed.

[0028] In an alternative embodiment, as shown in Figure 3 The circular groove formed in the top of the unloading door 22 is matched with the shape of the butterfly spring 24, and the gap between the unloading door base 21 and the unloading door 22 is provided with an up-and-down floating elastic force by the butterfly spring 24.

[0029] In an alternative embodiment, as shown in Figure 3 There is a certain floating gap between the unloading door base 21 and the unloading door 22. When the unloading door 22 is slightly deformed due to thermal expansion, the deformation amount can be compensated by the compression of the butterfly spring 24, so as to avoid the phenomenon that the unloading door 22 cannot be opened or closed.

[0030] In an optional embodiment, as shown in Figure 3 , the top of the mixing machine 13 is provided with an inclined feed inlet, which is matched with the small slope on the top of the discharge door 22. When the outer wall of the discharge door 22 enters the inner cavity of the mixing machine 13, the small slope on the top of the discharge door 22 is in contact with the inclined feed inlet on the top of the mixing machine 13, and the butterfly spring 24 makes the discharge door 22 in a floating state, which has the function of automatic centering.

[0031] In an optional embodiment, as shown in Figure 2 and Figure 4 , the turnover mechanism 3 includes a gear box 31, the top of the gear box 31 is fixedly connected with the bottom of the connecting rod 15, the rear part of the gear box 31 is rotatably connected with the rear part of the inner cavity of the mounting frame 1, the front part of the gear box 31 is fixedly connected with a gear 33, the front part of the gear box 31 is fixedly connected with a bevel gear 34 in front of the gear 33, the outer wall of the bevel gear 34 is engaged with a bevel gear 35, the shaft center of the bevel gear 35 is fixedly connected with a rotating rod 36, the left part of the rotating rod 36 is rotatably connected with the inner wall of the gear box 31, the outer wall of the rotating rod 36 is rotatably connected with the bottom of the connecting rod 16, the right part of the rotating rod 36 is rotatably connected with the right part of the inner cavity of the mounting frame 1, the right part of the outer wall of the rotating rod 36 is fixedly connected with a pulley 37, the outer wall of the pulley 37 is drivingly connected with a synchronous belt 38, the bottom of the synchronous belt 38 is drivingly connected with a pulley 39, the inner wall of the pulley 39 is fixedly connected with the outer wall of the rotating shaft 14. When the hydraulic cylinder 12 drives the piston rod to move to a certain height, the teeth on the outer wall of the piston rod are engaged with the gear 33, the gear 33 drives the rotating rod 32 and the bevel gear 34 to rotate, so that the bevel gear 34 is engaged with the bevel gear 35, the rotating rod 36 is driven to rotate, the rotating rod 36 drives the pulley 37 and the synchronous belt 38 to rotate, the synchronous belt 38 drives the pulley 39 to rotate, and the pulley 39 drives the rotating shaft 14 and the mixing machine 13 to rotate.

[0032] In an optional embodiment, as shown in Figure 2 and Figure 4 , the distance and size of the teeth on the outer wall of the gear 33 are matched with the distance and size of the teeth on the bottom of the piston rod of the hydraulic cylinder 12. By moving the piston rod driven by the hydraulic cylinder 12, the teeth on the outer wall of the piston rod can be engaged with the gear 33.

[0033] In an optional embodiment, as shown in Figure 4 , the top of the gear box 31 is fixedly connected with a connecting pipe 311, and the top of the connecting pipe 311 penetrates the outer wall of the top of the mounting frame 1. Through the connecting pipe 311, lubricant can be more conveniently added to different gears in the gear box 31, which increases the service life and ensures the accuracy.

[0034] The above embodiment discloses an automatic centering device for the discharge door of an internal mixer, wherein when the mixing work in the internal mixer 13 is completed, the hydraulic cylinder 12 is started to move the piston rod at the bottom of the hydraulic cylinder 12 upward, and the piston rod drives the discharge door base 21 to move upward, so that the discharge door 22 no longer blocks the internal mixer 13. When the piston rod moves to a certain height, the teeth on the outer wall of the piston rod engage with the gear 33, the gear 33 drives the rotating rod 32 and the bevel gear 34 to rotate, so that the bevel gear 34 engages with the bevel gear 35, and the rotating rod 36 is driven to rotate, the rotating rod 36 drives the pulley 37 and the synchronous belt 38 to rotate, the synchronous belt 38 drives the pulley 39 to rotate, and the pulley 39 drives the rotating shaft 14 and the internal mixer 13 to rotate, so that the internal mixer 13 rotates 180°, and the feeding port of the internal mixer 13 faces downward, so that the mixed material in the internal mixer 13 is discharged. When it is necessary to block the internal mixer 13, the hydraulic cylinder 12 is started to drive the piston rod to move downward, so that the teeth on the outer wall of the piston rod engage with the gear 33, so that the internal mixer 13 rotates 180°, and the feeding port of the internal mixer 13 faces upward. When the teeth on the outer wall of the piston rod no longer engage with the gear 33, the internal mixer 13 stops rotating. At this time, the outer wall of the discharge door 22 enters the inner cavity of the internal mixer 13, and the small inclined surface at the top of the discharge door 22 contacts the inclined surface at the top of the feeding port of the internal mixer 13, and the butterfly-shaped elastic piece 24 makes the discharge door 22 in a floating state, so as to have the automatic centering function. When the discharge door 22 is slightly deformed due to thermal expansion, the deformation amount can be compensated by the compression of the butterfly-shaped elastic piece 24, so as to avoid the phenomenon that the discharge door 22 cannot be opened or closed. In summary, the discharge door mechanism 2 and the overturning mechanism 3 cooperate with each other to block the internal mixer 13, and the discharge door mechanism 2 ensures the sealing performance of the internal mixer 13, so as to avoid the phenomenon of air leakage or liquid leakage.

[0035] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A mixer discharge gate automatic centering device, comprising a mounting frame (1), the bottom of the inner cavity of the mounting frame (1) is fixedly connected with a collecting groove (11), and the top of the mounting frame (1) is fixedly connected with a hydraulic cylinder (12), characterized in that, The bottom of the right side of the piston rod of the hydraulic cylinder (12) is fixedly connected with gear teeth, the middle of the inner cavity of the mounting frame (1) is fixedly connected with a rotating shaft (14), one end of the rotating shaft (14) is rotatably connected with a mixer (13), the top of the inner cavity of the mounting frame (1) is fixedly connected with a connecting rod one (15) and a connecting rod two (16), the bottom of the piston rod of the hydraulic cylinder (12) is fixedly connected with a discharge gate mechanism (2), and the bottom of the connecting rod one (15) is fixedly connected with a turnover mechanism (3).

2. An automatic centering device for an internal mixer door according to claim 1, characterized in that The discharge gate mechanism (2) comprises a discharge gate base (21) and a pin bolt (23), the inner wall of the discharge gate base (21) is inserted with the top of the pin bolt (23), the top of the discharge gate base (21) is fixedly connected with the bottom of the piston rod of the hydraulic cylinder (12), the bottom of the discharge gate base (21) is threadedly connected with a discharge gate (22) through the pin bolt (23), the outer wall of the discharge gate (22) is inserted with the top of the mixer (13), the top of the discharge gate (22) is provided with a circular groove, and a butterfly-shaped elastic sheet (24) is arranged in the circular groove, the inner wall of the butterfly-shaped elastic sheet (24) is inserted with the outer wall of the pin bolt (23), and the top of the butterfly-shaped elastic sheet (24) is overlapped with the bottom of the discharge gate base (21).

3. An automatic centering device for an internal mixer door according to claim 2, characterized in that The circular groove provided at the top of the discharge gate (22) is matched with the shape of the butterfly-shaped elastic sheet (24).

4. The automatic centering device for the unloading door of an internal mixer according to claim 2, characterized in that There is a certain floating gap between the discharge gate base (21) and the discharge gate (22).

5. The automatic centering device for the unloading door of an internal mixer according to claim 2, characterized in that The feeding port provided at the top of the mixer (13) has an inclination, which is matched with the small slope at the top of the discharge gate (22).

6. An automatic centering device for an internal mixer door according to claim 1, characterized in that The turnover mechanism (3) comprises a gear box (31), the top of the gear box (31) is fixedly connected with the bottom of the connecting rod one (15), the rear part of the gear box (31) is rotatably connected with a rotating rod one (32), the rear part of the rotating rod one (32) is rotatably connected with the rear part of the inner cavity of the mounting frame (1), the front part of the rotating rod one (32) is fixedly connected with a gear (33), the front part of the rotating rod one (32) is fixedly connected with a bevel gear one (34) in front of the gear (33), the outer wall of the bevel gear one (34) is engaged with a bevel gear two (35), the shaft center of the bevel gear two (35) is fixedly connected with a rotating rod two (36), the left part of the rotating rod two (36) is rotatable with the inner wall of the gear box (31), the outer wall of the rotating rod two (36) is rotatably connected with the bottom of the connecting rod two (16), the right part of the rotating rod two (36) is rotatably connected with the right part of the inner cavity of the mounting frame (1), the right part of the outer wall of the rotating rod two (36) is fixedly connected with a pulley one (37), the outer wall of the pulley one (37) is drivingly connected with a synchronous belt (38), the bottom of the synchronous belt (38) is drivingly connected with a pulley two (39), and the inner wall of the pulley two (39) is fixedly connected with the outer wall of the rotating shaft (14).

7. An automatic centering device for an internal mixer door according to claim 6, characterized in that The spacing and size of the gear teeth on the outer wall of the gear (33) are matched with the spacing and size of the gear teeth on the bottom of the piston rod of the hydraulic cylinder (12).

8. An automatic centering device for an internal mixer door according to claim 6, characterized in that The top of the gear box (31) is fixedly connected with a connecting pipe (311), and the top of the connecting pipe (311) penetrates the outer wall of the top of the mounting frame (1).

Images