Double-roller distance dynamic adjusting mechanism of open type rubber mixing mill

Abstract

The utility model relates to the field of rubber mixing mill, concretely relates to an open type rubber mixing mill double roll spacing dynamic adjusting mechanism, including support frame, two rubber mixing rollers are symmetrically rotatably connected in the inner side wall of support frame, adjusting mechanism is connected in one side of support frame for adjusting the spacing of two rubber mixing rollers, scraping mechanism is set below each rubber mixing roller, collection board is connected below the scraping mechanism, placing board is rotatably connected above two rubber mixing rollers, through the meshing transmission of rocker, threaded column, linkage gear and gear shape rod, manual operation is converted into stable linear displacement control, can realize the trace adjustment of double roll spacing, significantly improves the adjustment accuracy, satisfies the fine requirement of different rubber, different process to rubber mixing gap. For small batch, many varieties production scene, can complete spacing adjustment through the convenient operation of rocker.

Description

Technical Field

[0001] This utility model belongs to the field of rubber mixing machines, and specifically relates to a dynamic adjustment mechanism for the gap between two rollers of an open rubber mixing machine. Background Technology

[0002] As a key piece of equipment in the rubber processing industry, the open-type rubber mixing mill mainly uses two relatively rotating mixing rollers to crush, mix, and plasticize rubber. Its working efficiency and the quality of the mixed rubber directly affect the performance of the subsequent rubber products. In actual production, different types of rubber, such as natural rubber and synthetic rubber, or different process requirements, such as mixing uniformity and degree of plasticization, have different requirements for the spacing of the mixing rollers. Therefore, the adjustment accuracy and ease of the double roller spacing has become one of the core factors affecting the applicability of the rubber mixing mill.

[0003] The gap adjustment of the two rollers in open-type rubber mixing mills often relies on manual bolt fixing or simple mechanical transmission structures, resulting in low adjustment precision. This makes it difficult to meet the demands of refined production, especially in small-batch, multi-variety production scenarios, where frequent gap adjustments significantly reduce production efficiency. In the rubber addition stage, traditional mixing mills lack auxiliary support structures. When adding heavy or bulk rubber, continuous manual lifting or multiple additions are required, increasing the operator's workload and potentially causing uneven rubber addition speeds that lead to fluctuations in the mixing roller load and affect mixing stability. Furthermore, rubber tends to adhere to the mixing roller surface during mixing. Existing scraping devices often use fixed-angle scrapers, which cannot adjust the scraping force and angle according to the rubber's adhesion, easily leading to incomplete scraping or excessive scraper wear. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of traditional open-type rubber mixing mills in the background art, such as low accuracy and efficiency of double roller spacing adjustment, lack of auxiliary support for rubber addition leading to high labor intensity and unstable rubber mixing, and poor cleaning effect due to the difficulty of adapting the scraping device to the adhesion state of the rubber material. Therefore, this invention realizes a dynamic adjustment mechanism for the double roller spacing of an open-type rubber mixing mill.

[0005] To achieve the above-mentioned objectives, the technical solution of this utility model is: a dynamic adjustment mechanism for the gap between two rollers of an open rubber mixing mill, including a support frame;

[0006] Two rubber mixing rollers are symmetrically rotated and connected to the inner wall of the support frame;

[0007] An adjustment mechanism, connected to one side of the support frame, is used to adjust the distance between the two rubber mixing rollers;

[0008] A scraping mechanism is located below each rubber mixing roller;

[0009] A collection plate is connected below the scraping mechanism;

[0010] The placement plate is rotatably connected above the two rubber mixing rollers.

[0011] In the above-mentioned open rubber mixing mill double roller spacing dynamic adjustment mechanism, bearing seats are sleeved at both ends of the two rubber mixing rollers;

[0012] One of the rubber mixing rollers has its bearing housing fixed to the support frame;

[0013] The bearing housing of another rubber mixing roller is slidably connected to the support frame in the horizontal direction.

[0014] The aforementioned dynamic adjustment mechanism for the gap between the two rolls of the open rubber mixing mill also includes:

[0015] The first driven gear is fixed to one end of one of the rubber mixing rollers;

[0016] The second driven gear is fixed to one end of the other rubber mixing roller and meshes with the first driven gear;

[0017] The second sprocket is fixed at the other end of the rubber mixing roller where the first driven gear is located;

[0018] A drive motor is fixed to one side of the top of the support frame;

[0019] The first sprocket is connected to the output shaft of the drive motor;

[0020] A drive chain is fitted around the outer periphery of the first sprocket and the second sprocket.

[0021] In the above-mentioned dynamic adjustment mechanism for the gap between the two rolls of the open rubber mixing mill, the adjustment mechanism includes:

[0022] The transmission box is fixed to one side of the support frame;

[0023] The joystick has a threaded post fixed to its bottom.

[0024] The threaded post engages with the internal threaded hole at the top of the transmission box;

[0025] The linkage gear is fixed to the bottom of the threaded column;

[0026] The toothed rod slides along the groove opened on the side wall of the support frame;

[0027] One end of the toothed rod is fixed to the side wall of the bearing seat of the sliding connection, and its teeth mesh with the linkage gear.

[0028] In the above-mentioned dynamic adjustment mechanism for the gap between the two rollers of the open rubber mixing mill, the tooth height of the linkage gear is greater than the tooth height of the toothed rod, so that when the threaded column rotates and rises, the linkage gear always remains engaged with the toothed rod.

[0029] In the above-mentioned dynamic adjustment mechanism for the gap between the two rollers of the open rubber mixing mill, rotating rods are fixed at both ends of the placement plate;

[0030] The support frame has rotating grooves on both sides that match the rotating rod;

[0031] The support frame has bolts on both sides for locking the rotating rod.

[0032] In the above-mentioned open rubber mixing mill double roll spacing dynamic adjustment mechanism, the scraping mechanism includes:

[0033] An electric telescopic cylinder, the cylinder body of which is rotatably connected to both sides of the support frame;

[0034] A connecting rod, one end of which is rotatably connected to the output end of the electric telescopic cylinder;

[0035] A rotating shaft is rotatably connected to the inner wall of the support frame and fixed to the other end of the connecting rod;

[0036] A scraper is fixed to the side wall of the rotating shaft, and its working end extends to the outer periphery of the rubber mixing roller.

[0037] In the above-mentioned dynamic adjustment mechanism for the gap between the two rollers of the open rubber mixing mill, a limiting rod is provided between the two ends of the collecting plate and the support frame;

[0038] The support frame and the collecting plate have through holes at both ends that match the limiting rod.

[0039] Compared with the prior art, the dynamic adjustment mechanism for the gap between the two rollers of the open rubber mixing mill of this utility model has at least the following beneficial effects:

[0040] 1. This utility model discloses a dynamic adjustment mechanism for the gap between the two rollers of an open-type rubber mixing mill. Through the meshing transmission of a rocker arm, a threaded column, a linkage gear, and a toothed rod, manual operation is transformed into stable linear displacement control. This enables minute adjustments to the gap between the two rollers, significantly improving adjustment accuracy and meeting the refined requirements of different rubbers and processes for the mixing gap. For small-batch, multi-variety production scenarios, the gap adjustment can be completed conveniently through the rocker arm operation, reducing production interruption time caused by frequent adjustments and greatly improving production efficiency.

[0041] 2. The placement plate is rotatably connected to the support frame via a rotating rod, allowing the tilt angle to be adjusted according to rubber feeding requirements, providing stable support for heavy or batch-added rubber. The rubber can slide naturally down the placement plate onto the mixing roller, replacing the traditional method of manual lifting or batch feeding, significantly reducing the labor intensity of operators.

[0042] 3. The scraping mechanism uses an electric telescopic cylinder to drive the rotating shaft and scraper. By adjusting the telescopic cylinder's extension and retraction, the contact angle and pressure between the scraper and the rubber mixing roller surface can be flexibly changed. For rubber compounds with different adhesion levels, the scraping force can be precisely adjusted. When the rubber compound is thicker, the scraper's contact pressure is increased to ensure thorough removal; when the rubber compound is thinner, the pressure is reduced to avoid excessive wear on the scraper. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the first overall structure of this utility model;

[0044] Figure 2 This is a schematic diagram of the second overall structure of this utility model;

[0045] Figure 3 This is a schematic diagram of the third overall structure of this utility model;

[0046] Figure 4 This is a front view schematic diagram of the scraping mechanism of this utility model;

[0047] Figure 5 This is a side view schematic diagram of the adjustment mechanism of this utility model;

[0048] Figure 6 This is a side view schematic diagram of the linkage gear of this utility model.

[0049] In the diagram: 1. Support frame; 2. Drive motor; 3. Transmission chain; 4. First driven gear; 5. Second driven gear; 6. Rubber mixing roller;

[0050] 7. Placement plate; 701. Rotating rod;

[0051] 8. Adjustment mechanism; 801. Bearing housing; 802. Transmission box; 803. Rocker arm; 804. Toothed rod; 805. Linkage gear; 806. Threaded column;

[0052] 9. Scraping mechanism; 901. Electric telescopic cylinder; 902. Connecting rod; 903. Rotating shaft; 904. Scraper;

[0053] 10. Collection plate; 11. Second sprocket. Detailed Implementation

[0054] The following description, in conjunction with the accompanying drawings and specific embodiments, provides a more detailed account of the dynamic adjustment mechanism for the gap between the two rollers of the open rubber mixing mill of this utility model.

[0055] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] This embodiment discloses a dynamic adjustment mechanism for the distance between the two rollers of an open-type rubber mixing mill. Traditional open-type rubber mixing mills suffer from drawbacks such as low precision and efficiency in adjusting the distance between the two rollers, lack of auxiliary support for rubber addition leading to high labor intensity and unstable mixing, and difficulty in adapting the scraping device to the adhesion state of the rubber compound resulting in poor cleaning performance. Referring to… Figures 1-6 It mainly includes a support frame 1; two rubber mixing rollers 6, which are symmetrically rotatably connected to the inner wall of the support frame 1; an adjustment mechanism 8, which is connected to one side of the support frame 1 and is used to adjust the distance between the two rubber mixing rollers 6; a scraping mechanism 9, which is set below each rubber mixing roller 6; a collection plate 10, which is connected below the scraping mechanism 9; and a placement plate 7, which is rotatably connected above the two rubber mixing rollers 6.

[0057] The support frame 1 provides a stable support for all components; two rubber mixing rollers 6 are symmetrically rotatably connected to the inner wall of the support frame 1, and achieve the crushing and mixing of materials through relative rotation; the adjustment mechanism 8 is connected to one side of the support frame 1, and can change the distance between the two rubber mixing rollers 6 through mechanical transmission to adapt to different processing requirements; the scraping mechanism 9 is set below each rubber mixing roller 6, and can clean the residue adhering to the surface of the rubber mixing roller 6; the collecting plate 10 is connected below the scraping mechanism 9, and is used to receive the material cleaned by the scraping mechanism; the placement plate 7 is rotatably connected above the two rubber mixing rollers 6, and can provide a feeding guide for the material to be processed by adjusting the angle.

[0058] Reference Figures 1-3 Both ends of the two rubber mixing rollers 6 are fitted with bearing seats 801; the bearing seat 801 of one rubber mixing roller 6 is fixed to the support frame 1, and the bearing seat 801 of the other rubber mixing roller 6 is slidably connected to the support frame 1 in the horizontal direction. It also includes: a first driven gear 4, fixed to one end of one rubber mixing roller 6; a second driven gear 5, fixed to one end of the other rubber mixing roller 6 and meshing with the first driven gear 4; a second sprocket 11, fixed to the other end of the rubber mixing roller 6 where the first driven gear 4 is located; a drive motor 2, fixed to one side of the top of the support frame 1; a first sprocket, connected to the output shaft of the drive motor 2; and a transmission chain 3, sleeved around the outer periphery of the first sprocket and the second sprocket 11.

[0059] Both ends of the two rubber mixing rollers 6 are fitted with bearing seats 801, which provide stable support for the rotation of the rubber mixing rollers 6 and reduce friction during rotation. The bearing seat 801 of one rubber mixing roller 6 is fixed to the support frame 1 to keep the position of the rubber mixing roller 6 stable; the bearing seat 801 of the other rubber mixing roller 6 is slidably connected to the support frame 1 in the horizontal direction, providing a basis for adjusting the position of the rubber mixing roller 6 so as to realize the adjustment of the distance between the two rubber mixing rollers 6.

[0060] The second sprocket 11 is fixed to the other end of the rubber mixing roller 6 where the first driven gear 4 is located, and forms a closed transmission circuit with the first sprocket on the output shaft of the drive motor 2 through the transmission chain 3. The drive motor 2 is fixed to the motor base on the top of the support frame 1, and its output shaft is rigidly connected to the first sprocket through a coupling to provide stable rotational power; the motor adopts frequency conversion speed regulation control, which can adjust the speed according to processing requirements to match the rubber mixing process requirements of different rubber materials.

[0061] Reference Figure 1-3 and Figure 5 as well as Figure 6 The adjusting mechanism 8 includes: a transmission box 802, fixed to one side of the support frame 1; a rocker arm 803, with a threaded post 806 fixed to its bottom; the threaded post 806 engaging with an internal threaded hole at the top of the transmission box 802; a linkage gear 805, fixed to the bottom of the threaded post 806; and a toothed rod 804, sliding along a groove opened on the side wall of the support frame 1. One end of the toothed rod 804 is fixed to the side wall of the slidingly connected bearing seat 801, and its teeth mesh with the linkage gear 805. The tooth height of the linkage gear 805 is greater than the tooth height of the toothed rod 804, ensuring that the linkage gear 805 remains engaged with the toothed rod 804 as the threaded post 806 rotates and rises.

[0062] The transmission box 802 of the adjusting mechanism 8 is bolted to the side wall of the support frame 1. The handle of the rocker arm 803 features a non-slip textured design for easy gripping and rotation by the operator. The threaded column 806 engages with the internal threaded hole at the top of the transmission box 802 using a trapezoidal thread. This thread type has a self-locking characteristic, preventing accidental changes in the adjusted spacing due to equipment vibration. The linkage gear 805 is fixed to the bottom of the threaded column 806 via a flat key; the teeth of the toothed rod 804 feature an involute tooth design, and the meshing clearance with the linkage gear 805 is controlled within 0.1mm to ensure transmission accuracy. The toothed rod 804 is embedded in a groove in the side wall of the support frame 1. When the rocker arm 803 is rotated, the threaded column 806 rises along the internal threaded hole of the transmission box 802, and the linkage gear 805 rotates accordingly, pushing the toothed rod 804 to move horizontally. Since the tooth height of the linkage gear 805 is greater than the tooth height of the toothed rod 804, the two remain effectively meshed even during the rising of the threaded column 806, avoiding the risk of tooth disengagement. The movement of the toothed rod 804 directly drives the bearing seat 801 on the sliding side to translate along the guide rail of the support frame 1, thereby achieving precise adjustment of the gap between the two rollers.

[0063] Reference Figure 1 and Figure 2 The two ends of the placement plate 7 are fixed with rotating rods 701; the two sides of the support frame 1 are provided with rotating grooves that match the rotating rods 701; the two sides of the support frame 1 are provided with bolts for locking the rotating rods 701.

[0064] Rotating rods 701 are welded to both ends of the placement plate 7. Semi-circular rotating grooves matching the outer diameter of the rotating rods 701 are provided on both sides of the support frame 1. Bolts are also provided on both sides of the support frame 1, with the threaded ends passing through threaded holes in the side walls of the support frame and abutting against the surface of the rotating rods 701. By tightening the bolts, radial pressure can be applied to the rotating rods 701, using friction to lock the rotating rods and prevent the placement plate from rotating accidentally due to vibration or external force during rubber mixing. When it is necessary to adjust the angle of the placement plate, simply loosen the bolts, and the rotating rods can rotate smoothly within the rotating grooves. After adjusting to the desired angle, retighten the bolts to fix the placement plate in the set position, ensuring the stability of material delivery and operational safety.

[0065] Reference Figures 1-4 The scraping mechanism 9 includes: an electric telescopic cylinder 901, whose cylinder body is rotatably connected to both sides of the support frame 1; a connecting rod 902, one end of which is rotatably connected to the output end of the electric telescopic cylinder 901; a rotating shaft 903, which is rotatably connected to the inner wall of the support frame 1 and fixed to the other end of the connecting rod 902; and a scraper 904, which is fixed to the side wall of the rotating shaft 903, with its working end extending to the outer periphery of the rubber mixing roller 6. Limiting rods are provided between the two ends of the collecting plate 10 and the support frame 1, and through holes matching the limiting rods are provided at both ends of the support frame 1 and the collecting plate 10.

[0066] In the scraping mechanism 9, the cylinder body of the electric telescopic cylinder 901 is rotatably connected to both sides of the support frame 1 via a hinge structure. One end of the connecting rod 902 is connected to the output end of the electric telescopic cylinder 901 via a ball joint, and the other end is fixed to the end of the rotating shaft 903 via a set screw, realizing the conversion of the linear motion of the telescopic cylinder to the rotational motion of the rotating shaft. Both ends of the rotating shaft 903 are rotatably connected to the inner wall of the support frame 1 via deep groove ball bearings. The scraper 904 is fixed to the side wall of the rotating shaft 903, and its working end extends to the outer periphery of the rubber mixing roller 6. The surface of the scraper is covered with a wear-resistant coating, which reduces frictional wear with the roller surface and ensures thorough scraping of the rubber material.

[0067] The two ends of the collecting plate 10 are connected to the support frame 1 via quick-connect limiting rods. Symmetrically distributed through holes are provided at corresponding positions on the support frame 1 and the collecting plate 10. The end of the limiting rod is provided with an annular groove, which cooperates with the elastic buckle on the side wall of the support frame 1 to realize the function of quick one-handed installation and removal, and facilitates quick adjustment of the angle of the collecting plate when cleaning residual materials.

[0068] The working principle of the open rubber mixing mill double roller spacing dynamic adjustment mechanism of this utility model is as follows: First, rubber is placed between two rubber mixing rollers 6, and the drive motor 2 is started. The output end of the drive motor 2 drives one of the rubber mixing rollers 6 to rotate through the first sprocket, the transmission chain and the second sprocket 11. The first driven gear 4 on one of the rubber mixing rollers 6 drives the second driven gear 5 to rotate, and the second driven gear 5 drives the other rubber mixing roller 6 to rotate.

[0069] When the rubber is heavy or plentiful, it can be placed on the placement plate 7, allowing it to gradually slide down and providing auxiliary support. The angle of the placement plate 7 can be adjusted by rotating the rotating rod 701 on the placement plate 7.

[0070] Rotating the rocker arm 803 drives the threaded column 806 to rotate, which in turn drives the linkage gear 805 to rotate. The linkage gear 805 then drives the toothed rod 804 to move. While the threaded column 806 drives the linkage gear 805 to rotate, it also rises. The distance the linkage gear 805 rises is limited. The linkage gear 805 rotates upwards until the upper half of the teeth on the toothed rod 804 is reached, without derailing from the teeth on the toothed rod 804, and thus limits the toothed rod 804. The toothed rod 804 drives the bearing seat 801 to move, which in turn drives another rubber mixing roller 6 to move, thereby adjusting the distance between the two rubber mixing rollers 6. After the rubber mixing roller 6 moves, the distance between the second driven gear 5 and the first driven gear 4 increases. The second driven gear 5 moves to its maximum position until the first driven gear 4 can still drive the second driven gear 5 to rotate.

[0071] By activating the electric telescopic cylinder 901, the output shaft of the electric telescopic cylinder 901 drives the connecting rod 902 to rotate, the connecting rod 902 drives the rotating shaft 903 to rotate, and the rotating shaft 903 drives the scraper 904 to rotate to the outer surface of the rubber mixing roller 6, which can scrape off the rubber on the outer surface of the rubber mixing roller 6.

[0072] By removing one of the limiting rods on the collecting plate 10, the collecting plate 10 can be tilted, making it easier for the rubber on the collecting plate 10 to slide off.

[0073] It should be noted that, in actual implementation, the structure depicted in the accompanying drawings is not a fixed or unchanging embodiment. The components of the embodiments of this invention described and shown in these drawings can typically be arranged and designed in various different configurations. Furthermore, the accompanying drawings and abstract drawings are merely illustrative and do not represent the specific structure or actual quantity in a concrete implementation.

[0074] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation on quantity. Terms such as "comprising" or "including" mean that the element or component preceding the word encompasses the element or component listed following the word and its equivalents, without excluding other elements or components. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0075] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed by the present invention without exceeding the protection scope of the present invention.

Claims

1. A dynamic adjustment mechanism for the gap between two rollers of an open rubber mixing mill, characterized in that: Includes support frame (1); Two rubber mixing rollers (6) are symmetrically rotated and connected to the inner wall of the support frame (1); An adjustment mechanism (8) is connected to one side of the support frame (1) and is used to adjust the distance between the two rubber mixing rollers (6); A scraping mechanism (9) is located below each rubber mixing roller (6); A collection plate (10) is connected below the scraping mechanism (9); Placement plate (7) is rotatably connected above two rubber mixing rollers (6).

2. The dynamic adjustment mechanism for the gap between the two rollers of the open rubber mixing mill according to claim 1, characterized in that: Both ends of the two rubber mixing rollers (6) are fitted with bearing seats (801); The bearing seat (801) of one of the rubber mixing rollers (6) is fixed to the support frame (1); The bearing housing (801) of another rubber mixing roller (6) is slidably connected to the support frame (1) in the horizontal direction.

3. The dynamic adjustment mechanism for the gap between the two rollers of the open rubber mixing mill according to claim 2, characterized in that: Also includes: The first driven gear (4) is fixed to one end of one of the rubber mixing rollers (6); The second driven gear (5) is fixed to one end of the other rubber mixing roller (6) and meshes with the first driven gear (4); The second sprocket (11) is fixed to the other end of the rubber mixing roller (6) where the first driven gear (4) is located; The drive motor (2) is fixed to one side of the top of the support frame (1); The first sprocket is connected to the output shaft of the drive motor (2); The transmission chain (3) is sleeved on the outer periphery of the first sprocket and the second sprocket (11).

4. The dynamic adjustment mechanism for the gap between the two rollers of the open rubber mixing mill according to claim 2, characterized in that: The adjustment mechanism (8) includes: The transmission box (802) is fixed to one side of the support frame (1); A rocker arm (803) with a threaded post (806) fixed at its bottom; The threaded post (806) engages with the internal threaded hole at the top of the transmission box (802); The linkage gear (805) is fixed to the bottom of the threaded column (806); The toothed rod (804) slides along the groove opened on the side wall of the support frame (1); One end of the toothed rod (804) is fixed to the side wall of the slidingly connected bearing seat (801), and its teeth mesh with the linkage gear (805).

5. The dynamic adjustment mechanism for the gap between the two rollers of the open rubber mixing mill according to claim 4, characterized in that: The tooth height of the linkage gear (805) is greater than the tooth height of the toothed rod (804), so that when the threaded column (806) rotates and rises, the linkage gear (805) always remains engaged with the toothed rod (804).

6. The dynamic adjustment mechanism for the gap between the two rollers of the open rubber mixing mill according to claim 1, characterized in that: Rotating rods (701) are fixed at both ends of the placement plate (7); The support frame (1) has rotating grooves on both sides that match the rotating rod (701); The support frame (1) has bolts on both sides for locking the rotating rod (701).

7. The dynamic adjustment mechanism for the gap between the two rollers of the open rubber mixing mill according to claim 1, characterized in that: The scraping mechanism (9) includes: An electric telescopic cylinder (901) has its cylinder body rotatably connected to both sides of the support frame (1); The connecting rod (902) is rotatably connected at one end to the output end of the electric telescopic cylinder (901); A rotating shaft (903) is rotatably connected to the inner wall of the support frame (1) and fixed to the other end of the connecting rod (902); The scraper (904) is fixed to the side wall of the rotating shaft (903), and its working end extends to the outer periphery of the rubber mixing roller (6).

8. The dynamic adjustment mechanism for the gap between the two rollers of the open rubber mixing mill according to claim 1, characterized in that: Limiting rods are provided between the two ends of the collecting plate (10) and the support frame (1); The support frame (1) and the collecting plate (10) have through holes at both ends that match the limiting rod.

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