Roller distance adjusting structure of open type rubber mixing machine

Abstract

The utility model relates to open type rubber mixing mill discloses a roller distance adjusting structure of open type rubber mixing mill, which comprises an equipment frame, a fixed roller, two mounting seats, a movable roller, two lead screws, a connecting shaft and an input shaft. Rotating one of the lead screws, the other lead screw also rotates in the opposite direction through the transmission of the connecting shaft and the bevel gear pair. Correspondingly, the screw directions of the two lead screws are opposite and the pitches are the same. Rotating one of the lead screws can synchronously drive the two mounting seats and the movable roller to move, thereby stably adjusting the distance of the movable roller. The utility model has the beneficial effects that the operation of adjusting the distance of the movable roller is more convenient, and the movement of the movable roller and the two mounting seats is more stable.

Description

Technical Field

[0001] This utility model relates to an open-type rubber mixing mill, and in particular to a roller spacing adjustment structure for an open-type rubber mixing mill. Background Technology

[0002] In an open-type rubber mixing mill, typically one of the two rollers is fixed in its installation position, while the other roller (marked as the movable roller) is adjustable in its installation position on the frame, thus changing the distance between the two rollers. For a single motor and reducer-based drive system, a universal joint is typically used between one output shaft of the reducer and the movable roller, allowing for fine-tuning of the movable roller's position.

[0003] Correspondingly, the open-type rubber mixing mill is also equipped with an adjustable gap structure to adjust the movable rollers. Sufficient space needs to be left directly below the gap between the two rollers. Existing adjustable gap structures generally use two sets of lead screws. Connecting blocks are fixed between the mounting seats at both ends of the movable rollers, and the lead screws are rotatably connected to the connecting blocks. The lead screw nuts are fixedly connected to the equipment frame. To adjust the gap, loosen the fixing bolts or movable locks between the two mounting seats and the equipment frame, and manually rotate the lead screws.

[0004] The existing pitch adjustment structure still has problems: the axial length of the movable roller is relatively long, and it is adjusted by a single lead screw. The movement of the movable roller and the two mounting seats is not stable enough during the adjustment process. Utility Model Content

[0005] This application provides a roller spacing adjustment structure for an open rubber mixing mill, which can solve the problems mentioned in the background art.

[0006] This application provides a roller pitch adjustment structure for an open-type rubber mixing mill, comprising: Equipment rack; The fixed roller is rotatably connected to the equipment frame around a horizontal transverse axis; Two mounting bases are slidably connected to the equipment frame along the horizontal longitudinal direction; The movable roller is hollow, with its two ends rotatably connected to two mounting bases around a horizontal transverse axis; Two lead screws, the first end of which is rotatably connected to two mounting bases around the horizontal longitudinal axis; the second end of each screw protrudes through the equipment frame, and the two protruding positions of the equipment frame are fixedly connected with lead screw nuts of matching lead screws; The connecting shaft is rotatably connected to the movable roller around a horizontal transverse axis; both ends extend beyond the movable roller, and bevel gear pairs for transmission are provided between both ends and the lead screw on the same side; The input shaft is rotatably connected to one of the mounting bases about a horizontal transverse axis, and a gear pair for transmission is provided between it and the movable roller.

[0007] In some embodiments, a connecting block is fixedly connected to the second end of one of the lead screws, and a handle is hinged to the connecting block; a limiting plate is fixedly provided at the corresponding protruding position of the equipment frame, and the limiting plate is provided with multiple limiting notches in a circular array, the limiting notches being used to allow the handle to enter and thus restrict the rotation of the lead screw.

[0008] In some embodiments, both bevel gears of the bevel gear pair are rotatably connected to the mounting base; the lead screw and bevel gears, and the connecting shaft and bevel gears are detachably connected.

[0009] In some embodiments, the mounting base includes: a base body and a connecting piece detachably connected to the base body; the base body is slidably connected to the equipment rack; the connecting piece includes: a longitudinal piece for rotatably connecting to one bevel gear and a transverse piece for rotatably connecting to another bevel gear.

[0010] In some embodiments, the seat body also has a splice, with the side of the transverse sheet away from the longitudinal sheet being inserted into the splice.

[0011] In some embodiments, the movable roller includes: a roller body portion and two shaft end portions respectively detachably connected to both ends of the roller body portion; the shaft end portions are used for rotatable connection with the mounting base.

[0012] In summary, this application discloses a roller pitch adjustment structure for an open-type rubber mixing mill, comprising: a frame, a fixed roller, two mounting seats, a movable roller, two lead screws, a connecting shaft, and an input shaft. Rotating one lead screw, through the connecting shaft and a bevel gear pair, causes the other lead screw to rotate in the opposite direction. Correspondingly, the two lead screws have opposite helical directions but the same pitch. Rotating one lead screw synchronously drives the two mounting seats and the movable roller to move, stably adjusting the pitch of the movable roller. The advantages include: more convenient movable roller pitch adjustment operation, and more stable movement of the movable roller and the two mounting seats. Attached Figure Description

[0013] To better illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0014] Figure 1 This is a front view of this application; Figure 2 This is a partial sectional view of the present application from a top view perspective; Figure 3 for Figure 1 An enlarged schematic diagram of part A in the middle; Figure 4 for Figure 2 Enlarged schematic diagram of part B in the middle; Figure 5 This is a schematic diagram showing the mounting bracket cut open on one side. Figure 6 This is a schematic diagram showing the other side of the mounting bracket after it has been cut open.

[0015] In the picture, 1. Equipment rack; 1A. Limit plate; 1A1. Limit notch; 2. Fix the roller; 3. Mounting base; 3A. Slide groove; 31. Base body; 31A. Chamber; 31B. Insertion joint; 32. Connecting piece; 4. Movable roller; 41. Roller body; 42. Shaft end; 5. Lead screw; 5A. Connecting block; 5B. Handle; 6. Connecting shaft; 7. Input axis; 8. Bevel gears; 9. Gears. Specific Implementation

[0016] The following description is provided in conjunction with the accompanying drawings, which are for illustrative purposes only and not strictly to scale. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes. Unless otherwise specified, the embodiments in this application can be combined with each other.

[0017] Please see Figure 1 and Figure 2 An adjustable roller spacing structure for an open rubber mixing mill includes: a frame 1, a fixed roller 2, two mounting seats 3, a movable roller 4, two lead screws 5, a connecting shaft 6, and an input shaft 7.

[0018] Referring to the existing open rubber mixing mill: the fixed roller 2 is rotatably connected to the equipment frame 1 around the horizontal transverse axis. More specifically, a bearing can be set between the fixed roller 2 and the equipment frame 1; two mounting seats 3 are slidably connected to the equipment frame 1. For the convenience of subsequent description of the orientation, the sliding direction of the mounting seats 3 is set to the horizontal longitudinal direction. More specifically, the bottom surface of the mounting seat 3 can have a sliding groove 3A, and a slide rail can be fixed at the corresponding position of the equipment frame 1.

[0019] The movable roller 4 is hollow. Its two ends are rotatably connected to two mounting bases 3 about a horizontal transverse axis. More specifically, bearings can be installed between the movable roller 4 and the mounting bases 3.

[0020] The first ends of the two lead screws 5 are rotatably connected to two mounting seats 3 about a horizontal longitudinal axis. More specifically, bearings can be installed between the lead screws 5 and the mounting seats 3.

[0021] The second ends of both lead screws 5 extend out of the equipment frame 1, and lead screw nuts are fixedly connected to the two protruding positions of the equipment frame 1. That is, rotating the lead screws 5 drives the mounting base 3 to move.

[0022] The connecting shaft 6 is rotatably connected to the movable roller 4 about a horizontal transverse axis, meaning that the connecting shaft 6 passes through the movable roller 4, and the connecting shaft 6 and the movable roller 4 are coaxial. More specifically, a bushing can be provided between the connecting shaft 6 and the movable roller 4.

[0023] Please see Figure 4 , Figure 5 and Figure 6 Both ends of the connecting shaft 6 extend beyond the movable roller 4. A bevel gear pair for transmission is provided between both ends of the connecting shaft 6 and the lead screw 5 on the same side, that is, both the connecting shaft 6 and the lead screw 5 are fixedly connected to bevel gears 8, and the two bevel gears 8 mesh.

[0024] Rotating one of the lead screws 5 causes the other lead screw 5 to rotate in the opposite direction via the connecting shaft 6 and the bevel gear pair. Correspondingly, the two lead screws 5 have opposite helical directions but the same pitch. Rotating one of the lead screws 5 synchronously drives the two mounting seats 3 and the movable roller 4 to move, allowing for stable pitch adjustment of the movable roller 4.

[0025] Please see Figure 1 , Figure 3 and Figure 6 In some embodiments, a connecting block 5A is fixedly connected to the second end of one of the lead screws 5, and a handle 5B is hinged to the connecting block 5A. A limiting plate 1A is fixedly provided at the corresponding protruding position of the equipment frame 1. The limiting plate 1A is provided with a plurality of limiting notches 1A1 in a circular array. The limiting notches 1A1 are used to allow the handle 5B to enter, thereby limiting the rotation of the lead screw 5.

[0026] The adjustment range of the movable roller 4 is relatively small. Correspondingly, the horizontal and longitudinal movement of the connecting block 5A and the handle is also relatively small during the adjustment of the movable roller 4. The limiting notch 1A1 only needs to have a suitable depth to accommodate this.

[0027] Please see Figure 4 and Figure 5Because of the connecting shaft 6 and the bevel gear pair, the end of the movable roller 4 cannot be directly connected to the output shaft of the drive unit. The input shaft 7 is rotatably connected to one of the mounting bases 3 about a horizontal transverse axis. More specifically, a bushing can be provided between the input shaft 7 and the mounting base 3. A gear pair for transmission is provided between the input shaft 7 and the movable roller 4, that is, gears 9 are fixedly connected to the ends of both the input shaft 7 and the movable roller 4, and the two gears 9 mesh.

[0028] In addition, if the movable roller 4 needs to be heated, the connecting shaft 6 can be designed to be hollow and multiple through holes can be opened in the connecting shaft 6 to connect the inner cavity of the movable roller 4. Rotary joints can be fixedly connected to both ends of the connecting shaft 6, and the rotary joints are connected to pipelines to circulate hot steam.

[0029] In some embodiments, both bevel gears 8 of the bevel gear pair are rotatably connected to the mounting base 3. More specifically, a bushing may be provided between the bevel gear 8 and the movable roller 4. The lead screw 5 and the bevel gear 8, and the connecting shaft 6 and the bevel gear 8 are all detachably connected. More specifically, the lead screw 5 and the connecting shaft 6 can be inserted into the bevel gear 8, and a screw for locking the lead screw 5 / connecting shaft 6 may be threaded onto the bevel gear 8. Accordingly, for the lead screw 5, after loosening the screw, rotating the lead screw 5 causes the lead screw 5 to move longitudinally while the mounting base 3 remains stationary, allowing the lead screw 5 to insert / remove from the bevel gear 8; for the connecting shaft 6, after loosening the screw, it can be pulled out / inserted horizontally.

[0030] Compared to directly fixing the bevel gear 8 to the lead screw 5 / connecting shaft 6, it is more convenient to assemble and maintain.

[0031] Please see Figure 4 and Figure 6 Based on the above embodiment where "both bevel gears 8 are rotatably connected to the mounting base 3", in some embodiments, the mounting base 3 includes: a base body 31 and a connecting piece 32. The base body 31 is slidably connected to the equipment frame 1. The connecting piece 32 is detachably connected to the base body 31. The connecting piece 32 includes: a longitudinal piece and a transverse piece. The longitudinal piece is used for rotatably connecting one bevel gear 8, and the transverse piece is used for rotatably connecting the other bevel gear 8.

[0032] More specifically, the base 31 may have a chamber 31A for accommodating the bevel gear pair, and the longitudinal plate of the connecting piece 32 may be fixedly connected to the base 31 by screws. For the input shaft 7, both the connecting piece 32 and the base 31 may be fitted with bushings, with the two bushings respectively fitting at both ends of the input shaft 7.

[0033] Please see Figure 4 and Figure 5 Furthermore, the seat 31 also has a joint 31B, on which the side of the transverse piece away from the longitudinal piece is inserted into the joint 31B.

[0034] Please see Figure 3 and Figure 4 Based on the above embodiment where "both bevel gears 8 are rotatably connected to the mounting base 3", in some embodiments, the movable roller 4 includes: a roller body portion 41 and two shaft end portions 42. The shaft end portions 42 are rotatably connected to the mounting base 3. The two shaft end portions 42 are detachably connected to both ends of the roller body portion 41, and more specifically, multiple screws may be provided between the shaft end portions 42 and the roller body portion 41.

[0035] The equipment frame 1 has through holes on both horizontal sides. Tools such as hexagonal sockets can pass through these holes to connect to the screws between the shaft end portion 42 and the roller body portion 41. After loosening the screws between the bevel gear 8 and the connecting rod, the connecting rod can be pulled out horizontally to separate it from the movable roller 4. The screws between the shaft end portion 42 and the roller body portion 41 can then be removed, allowing for the separate disassembly of the roller body portion 41. This makes the assembly and maintenance of the movable roller 4 much easier.

Claims

1. A roller spacing adjustment structure for an open-type rubber mixing mill, characterized in that, include: Equipment rack (1); The fixed roller (2) is rotatably connected to the equipment frame (1) around the horizontal transverse axis; Two mounting bases (3) are slidably connected to the equipment frame (1) along the horizontal longitudinal direction; The movable roller (4) is hollow, and its two ends are rotatably connected to two mounting bases (3) around the horizontal transverse axis. Two lead screws (5) have their first ends rotatably connected to two mounting bases (3) around the horizontal longitudinal axis; their second ends both protrude through the equipment frame (1), and the two protruding positions of the equipment frame (1) are fixedly connected with the lead screw nuts of the matching lead screws (5); The connecting shaft (6) is rotatably connected to the movable roller (4) around the horizontal transverse axis; both ends extend beyond the movable roller (4), and a bevel gear pair for transmission is provided between both ends and the lead screw (5) on the same side; The input shaft (7) is rotatably connected to one of the mounting bases (3) about a horizontal transverse axis, and a gear pair for transmission is provided between it and the movable roller (4).

2. The roller spacing adjustment structure of an open rubber mixing mill according to claim 1, characterized in that, One of the lead screws (5) has a connecting block (5A) fixedly connected to its second end, and a handle (5B) is hinged to the connecting block (5A); a limiting plate (1A) is fixedly provided at the corresponding protruding position of the equipment frame (1), and the limiting plate (1A) has multiple limiting notches (1A1) arranged in a circular array. The limiting notches (1A1) are used to allow the handle (5B) to enter, thereby restricting the rotation of the lead screw (5).

3. The roller spacing adjustment structure of an open rubber mixing mill according to claim 1, characterized in that, Both bevel gears (8) of the bevel gear pair are rotatably connected to the mounting base (3); the lead screw (5) and bevel gears (8), and the connecting shaft (6) and bevel gears (8) can be detachably connected.

4. The roller spacing adjustment structure of an open rubber mixing mill according to claim 3, characterized in that, The mounting base (3) includes: a base body (31) and a connecting piece (32) detachably connected to the base body (31); the base body (31) is slidably connected to the equipment frame (1); the connecting piece (32) includes: a longitudinal piece for rotatably connecting to one bevel gear (8) and a transverse piece for rotatably connecting to another bevel gear (8).

5. The roller spacing adjustment structure of an open rubber mixing mill according to claim 4, characterized in that, The base (31) also has a joint (31B), into which the side of the transverse plate away from the longitudinal plate is inserted.

6. The roller spacing adjustment structure of an open rubber mixing mill according to claim 3, characterized in that, The movable roller (4) includes: a roller body part (41) and two shaft end parts (42) detachably connected to both ends of the roller body part (41); the shaft end parts (42) are used to rotately connect with the mounting base (3).

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