Hydraulic distance-adjusting open milling device for rubber sheets

Abstract

The utility model discloses a hydraulic distance-adjusting open milling device for a rubber sheet, which comprises two rollers, a fixed roller and a movable roller, wherein the two rollers are formed by a fixed roller and a movable roller which have the same height and are arranged in parallel; an oil cylinder of the hydraulic distance adjusting device is connected with a bearing seat of the movable roller, a displacement sensor is arranged in the oil cylinder, and closed-loop adjustment of the roller distance is achieved by controlling displacement of the movable roller through displacement feedback; the double-motor independent driving system comprises a transmission motor and a matched speed reducer which are used for independently driving the fixed roller and the movable roller respectively, and dynamic adjustment of the linear speed and the speed ratio of the double rollers is achieved; and the hydraulic rubber blocking plate is arranged above the double rollers and is hydraulically driven to adjust the positions of the opposite double rollers. Through single-roller hydraulic distance adjustment and double-roller independent driving, automatic programmed rubber mixing is realized, and the safety efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of rubber sheet mixing equipment, and particularly relates to a hydraulically adjustable mixing device for rubber sheets. Background Technology

[0002] Traditional open mixing mills have significant drawbacks: First, they have low adjustment efficiency, requiring 100-250 seconds to open the 50mm roll gap electrically or manually, which cannot meet the needs of rapid product thickness switching, and the adjustment process relies on manual labor, resulting in poor process consistency; Second, they have redundant structures and large footprints, with the design of a dedicated transmission base and two-section couplings increasing the volume, insufficient transmission rigidity, and requiring foundation installation, which disrupts the factory layout; Third, they have functional limitations, with fixed speed ratios leading to uneven rubber dispersion and rapid temperature rise, and slow adjustment of the baffle plate hindering automated production; Fourth, they pose significant safety hazards, as they cannot open the roll gap ≥50mm (CE standard) within 5 seconds in the event of an accident, increasing the risk of personal injury. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a hydraulically adjustable rubber sheet mixing device, which realizes automatic program rubber mixing and improves safety and efficiency through single-roller hydraulic adjustment and dual-roller independent drive.

[0004] Technical solution: To achieve the above objectives, this utility model provides a hydraulically adjustable grinding device for rubber sheets, comprising:

[0005] A double roller consisting of a fixed roller and a movable roller, both of equal height and arranged in parallel;

[0006] The hydraulic pitch adjustment device has an oil cylinder connected to the bearing seat of the moving roller. The oil cylinder has a built-in displacement sensor, and the displacement of the moving roller is controlled by displacement feedback to realize closed-loop adjustment of the roller pitch.

[0007] The dual-motor independent drive system includes a transmission motor and a matching reducer that independently drive the fixed roller and the moving roller respectively, so as to realize the dynamic adjustment of the linear speed and speed ratio of the two rollers;

[0008] And a hydraulic baffle plate, which is set above the double rollers, and its position relative to the double rollers is adjusted by hydraulic drive.

[0009] Furthermore, the hydraulic adjusting device is a single-cylinder structure.

[0010] Furthermore, the system includes a base on which a frame supporting a fixed roller and a movable roller is mounted, and an adjusting pad is provided at the bottom of the base to enable foundation-free installation.

[0011] Furthermore, the bearing seat of the movable roller is provided with a guide rail, which cooperates with the guide groove on the frame.

[0012] Furthermore, the bearing seat of the fixed roller is mounted on the frame, and the bearing seat of the movable roller is hinged to the piston rod of the hydraulic cylinder of the hydraulic adjustment device.

[0013] Furthermore, it includes a transmission device retaining ring that suspends the reducer on the base, and the transmission device retaining ring is an elastic suspension mechanism that allows the reducer to adjust its displacement radially to ensure coaxiality with the roller.

[0014] Furthermore, both the fixed roller and the movable roller are provided with a peripheral drilling cooling structure. The peripheral drilling cooling structure consists of several straight holes of 15-30 mm evenly distributed circumferentially within a depth range of 25-45 mm below the roller surface. The same axial end of the straight holes is connected to a cooling water storage cavity opened inside the axial end of the corresponding roller. The roller shaft corresponding to the cooling water storage cavity is a hollow shaft with a rotary joint. Cooling water is introduced into each straight hole through the inlet of the rotary joint and flows out through the outlet of the rotary joint, forming a roller circulating water cooling structure.

[0015] Furthermore, it includes a roller mechanical brake, which is linked to a hydraulic pitch adjustment device to trigger a rapid opening of the roller pitch during emergency braking.

[0016] Furthermore, the two hydraulic baffles are driven to move closer or further apart by a working roller surface adjusting hydraulic cylinder. The hydraulic baffle is composed of at least two baffles that slide and are sleeved horizontally to adjust the baffle width to match the roller distance. The hydraulic baffle also has a baffle width adjusting hydraulic cylinder for adjusting the baffle width.

[0017] Beneficial effects: This utility model achieves single-roller movement and pitch adjustment through a double-roller system consisting of a fixed roller and a moving roller, solving the problems of slow adjustment and inability to quickly respond to changes in product thickness in traditional equipment; the hydraulic pitch adjustment device reduces the roller pitch adjustment speed from the traditional 100-250 seconds to the second level, and achieves precise control in conjunction with a displacement sensor; the dual-motor independent drive system enables dynamic adjustment of the linear speed and speed ratio of the double rollers, allowing for dynamic adjustment of any speed ratio and avoiding poor mixing results caused by a fixed speed ratio; the hydraulic baffle plate performs position adjustment relative to the double rollers through hydraulic drive, and in conjunction with automatic rubber mixing, achieves rapid adjustment of the working roller surface width. Attached Figure Description

[0018] Figure 1 This is a side view of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 3 This is a top view of the structure of this utility model;

[0021] Figure 4 A schematic diagram of a fixed roller or a movable roller;

[0022] Figure 5 This is a schematic diagram of the hydraulic baffle plate. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figure 1 , Figure 2 as well as Figure 3 As shown, a hydraulic pitch adjustment open mixing device for rubber sheets includes: a double roller consisting of a fixed roller 1 and a movable roller 2, both of which are at the same height and arranged parallel to each other, enabling single-roller pitch adjustment and solving the problems of slow adjustment and inability to quickly respond to changes in product thickness in traditional equipment. A hydraulic pitch adjustment device 3, with its cylinder connected to the bearing seat of the movable roller 2, has a built-in displacement sensor 15. Through displacement feedback, the displacement of the movable roller 2 is controlled to achieve closed-loop adjustment of the roller pitch, reducing the roller pitch adjustment speed from the traditional 100-250 seconds to the second level, and achieving precise control in conjunction with the displacement sensor 15. A dual-motor independent drive system includes a transmission motor 4 that independently drives the fixed roller 1 and the movable roller 2, and a matching reducer 5, enabling dynamic adjustment of the linear speed and speed ratio of the double rollers. This allows for dynamic adjustment of any speed ratio, avoiding the poor mixing effect caused by a fixed speed ratio. A hydraulic baffle 6, positioned above the double rollers, is hydraulically driven to adjust its position relative to the double rollers, and in conjunction with automatic rubber mixing, achieves rapid adjustment of the working roller surface width.

[0025] In order to concentrate the thrust and ensure the response speed of the moving roller 2, the hydraulic adjustment device 3 is a single-cylinder structure.

[0026] This utility model includes a base 7, on which a frame 8 is provided to support the fixed roller 1 and the movable roller 2. Adjustable shims 9 are provided at the bottom of the base 7 to achieve foundation-free installation. This replaces the traditional foundation construction and installation method, and the 24 adjusting shims 9 increase the contact area and improve the stability of the equipment.

[0027] The bearing seat of the movable roller 2 is equipped with a guide rail, which cooperates with the guide groove on the frame 8 to ensure the displacement accuracy of the movable roller 2.

[0028] The bearing seat of the fixed roller 1 is mounted on the frame 8, and the fixed roller 1 is installed stably. The bearing seat of the movable roller 2 is hinged to the piston rod of the hydraulic cylinder of the hydraulic adjustment device 3. The hinged design of the movable roller 2 can adapt to the stroke of the hydraulic cylinder, that is, the structure is adapted to single roller movement.

[0029] This utility model includes a transmission device fixing ring 10, which suspends the reducer 5 on the base 7. The transmission device fixing ring 10 is an elastic suspension mechanism that allows the reducer 5 to adjust its radial displacement to ensure coaxiality with the roller. On the one hand, the suspended installation reduces the occupied area, and on the other hand, the elastic suspension mechanism ensures the coaxiality of the transmission.

[0030] like Figure 4 As shown, both the fixed roller 1 and the movable roller 2 are equipped with a peripheral drilling cooling structure. This peripheral drilling cooling structure consists of several straight holes 15-30 mm in diameter evenly distributed circumferentially within a depth range of 25-45 mm below the roller surface. The same axial end of the straight holes 18 is connected to a cooling water storage cavity 17 opened inside the axial end of the corresponding roller. The roller shaft corresponding to the cooling water storage cavity 17 is a hollow shaft with a rotary joint 11. Cooling water is introduced into each straight hole 18 through the inlet of the rotary joint 11 and flows out through the outlet of the rotary joint 11, forming a roller circulating water cooling structure. The straight holes 18 are relatively close to the roller surface, resulting in a better cooling effect than other types of rollers, which can effectively suppress the temperature rise of the rubber material.

[0031] This utility model includes a roller mechanical brake 12, which is linked with a hydraulic pitch adjustment device 3 and is used to trigger a rapid opening of the roller pitch during emergency braking.

[0032] like Figure 5 As shown, the two hydraulic baffles 6 are driven to move closer or further apart by the working roller surface adjusting hydraulic cylinder 13. Each hydraulic baffle 6 consists of at least two baffles horizontally sliding and sleeved together to adjust the baffle width to match the roller gap. The hydraulic baffle 6 also has a baffle width adjusting hydraulic cylinder 19 for width adjustment. The horizontal sliding and sleeved connection enables stepless width adjustment. The baffle width adjusting hydraulic cylinder 19, in conjunction with automated programmed rubber mixing, can promptly follow changes in baffle width, ensuring the timeliness and effectiveness of the baffle.

[0033] The rubber mixing principle of this utility model is briefly described as follows:

[0034] 1. According to the process requirements, the initial roller gap is set by the roller hydraulic adjustment device 3, the initial position of the hydraulic baffle plate 6 is set by the working roller surface adjustment hydraulic cylinder 13, and the initial linear speed and speed ratio of the fixed roller 1 and the moving roller 2 are set by the drive motor 4.

[0035] 2. Start the open mill and slowly add the prepared rubber compound in measured quantities. Manually return the rubber sheet after it has been squeezed by the rollers to the upper roller gap so that the rubber compound covers the surface of one of the rollers.

[0036] 3. After all the rubber compound is added to the open mill and the rubber compound has completely and autonomously coated the roller surface, the first stage of rubber mixing process is started: According to the process requirements, the open mill quickly and automatically sets the roller distance through the roller hydraulic distance adjustment device 3 and quickly sets the roller linear speed through the drive motor 4. The hydraulic baffle plate 6 adjusts the plate width to match the roller distance according to the process setting requirements. Then, the hydraulic baffle plate 6 drives the working roller surface adjustment hydraulic cylinder 13 to adjust the width of the working roller surface and squeeze the rubber compound, thereby achieving the effect of the first stage of rubber mixing process.

[0037] 4. After one cycle, the second stage of rubber mixing process begins: The second stage process parameters are automatically reset according to the program, and the roller gap, roller linear speed, hydraulic baffle plate width, and working roller surface width parameters are quickly and automatically set for the second stage of rubber mixing process; the rubber mixing process is repeated in this way until completion, and the mixed rubber material is collected through the receiving tray 16 under the roller.

[0038] In case of an emergency requiring the activation of the emergency brake: after pressing the emergency switch, the system cuts off the power supply to the drive motor 4, the roller hydraulic pitch adjustment device 3 is activated to quickly open the roller pitch by 50 mm within 5 seconds, and after cutting off the power supply to the drive motor 4, the roller mechanical brake 12 is activated to ensure that the roller rotation angle does not exceed 60°.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A hydraulically adjustable grinding device for rubber sheets, characterized in that: include: A double roller consisting of a fixed roller (1) and a movable roller (2) is arranged at the same height and in parallel. The hydraulic pitch adjustment device (3) has a cylinder connected to the bearing seat of the moving roller (2). The cylinder has a built-in displacement sensor (15) to control the displacement of the moving roller (2) through displacement feedback to achieve closed-loop adjustment of the roller pitch. The dual-motor independent drive system includes a transmission motor (4) that independently drives the fixed roller (1) and the moving roller (2) and a matching reducer (5) to realize dynamic adjustment of the linear speed and speed ratio of the dual rollers; And a hydraulic baffle (6) is set above the double rollers and is hydraulically driven to adjust the position relative to the double rollers.

2. The hydraulic pitch-adjusting open milling device for rubber sheets according to claim 1, characterized in that: The hydraulic adjusting device (3) is a single-cylinder structure.

3. The hydraulic pitch-adjusting open milling device for rubber sheets according to claim 1, characterized in that: Includes a base (7), on which a frame (8) is provided to support a fixed roller (1) and a movable roller (2), and an adjusting pad (9) is provided at the bottom of the base (7) to achieve foundation-free installation.

4. The hydraulic pitch-adjusting open milling device for rubber sheets according to claim 3, characterized in that: The bearing seat of the movable roller (2) is provided with a guide rail, which cooperates with the guide groove on the frame (8).

5. The hydraulic pitch-adjusting open milling device for rubber sheets according to claim 3, characterized in that: The bearing seat of the fixed roller (1) is mounted on the frame (8), and the bearing seat of the movable roller (2) is hinged to the piston rod of the hydraulic cylinder of the hydraulic adjustment device (3).

6. The hydraulic pitch-adjusting open milling device for rubber sheets according to claim 3, characterized in that: Includes a transmission device fixing ring (10) to suspend the reducer (5) on the base (7), and the transmission device fixing ring (10) is an elastic suspension mechanism that allows the reducer (5) to adjust its displacement in the radial direction to ensure coaxiality with the roller.

7. The hydraulic pitch-adjusting open milling device for rubber sheets according to claim 1, characterized in that: Both the fixed roller (1) and the movable roller (2) are provided with a peripheral drilling cooling structure. The peripheral drilling cooling structure consists of several straight holes (18) of 15-30 mm in diameter evenly distributed in the circumferential direction within a depth range of 25-45 mm below the roller surface. The same axial end of the straight hole (18) is connected to a cooling water storage cavity (17) opened inside the axial end of the corresponding roller. The roller shaft corresponding to the cooling water storage cavity (17) is a hollow shaft with a rotary joint (11) connected to it. Cooling water is introduced into each straight hole (18) through the inlet of the rotary joint (11) and flows out through the outlet of the rotary joint (11), thus forming a roller circulating water cooling structure.

8. The hydraulic pitch-adjusting open milling device for rubber sheets according to claim 1, characterized in that: It includes a roller mechanical brake (12), which is linked with a hydraulic pitch adjustment device (3) to trigger a rapid opening of the roller pitch during emergency braking.

9. The hydraulic pitch-adjusting open milling device for rubber sheets according to claim 1, characterized in that: The two hydraulic baffles (6) are driven to move closer or further apart by the working roller surface adjustment hydraulic cylinder (13). The hydraulic baffles (6) are composed of at least two baffles that slide horizontally and are sleeved together to adjust the plate width to match the roller distance. The hydraulic baffles (6) also have a plate width adjustment hydraulic cylinder (19) for adjusting the plate width.

Images