Rubber open mill

Abstract

A rubber open mill comprises a machine base (1), a front pressing roller (2), a rear pressing roller (3) and a material pressing device, the material pressing device comprises a pair of pressing rollers (6) and a material pressing air cylinder (7) for driving the pair of pressing rollers (6) to alternately press up and down, and the pair of pressing rollers (6) is located above a gap between the front pressing roller (2) and the rear pressing roller (3). The rubber sheet pressing device has the advantages that when rolled rubber is fed between the front pressing roller and the rear pressing roller, the rubber sheet can be quickly pressed into a gap through alternate pressing of the pair of pressing rollers, so that the rubber mixing efficiency is improved; and the film cutting assembly can automatically and quickly cut the film adhered to the front pressing roller, so that the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber processing, in particular to a rubber mixing mill. Background Art

[0002] Open mixing mill is the abbreviation of open rubber mixing mill. The raw rubber is sheared and mixed by the rotation of two differential pressing rollers. After the raw rubber comes out from the gap between the two differential pressing rollers, it is necessary to manually cut the rubber sheet attached to the pressing and roll it up, and then change the direction and continue to put it into the two differential pressing rollers, and repeat in sequence. When the raw rubber is put into the two differential pressing rollers, it is difficult to eat the rubber due to the smooth roller surface. It is necessary to manually apply pressure to the gap between the two differential pressing rollers. The labor intensity is high, time-consuming and labor-intensive, and it is also dangerous. Utility Model Content

[0003] The purpose of the utility model is to provide a rubber mixing mill to solve the above-mentioned shortcomings.

[0004] The utility model comprises a machine base, a front pressing roller, a rear pressing roller and a material pressing device, wherein the front pressing roller is installed on the machine base in a fixed position, and the rear pressing roller is installed on the machine base in a forward and backward adjustable manner, and the machine base is respectively provided with a first driving motor for driving the front pressing roller to rotate and a second driving motor for driving the rear pressing roller to rotate; the material pressing device comprises a pair of pressing rollers and a material pressing cylinder for driving the pair of pressing rollers to press up and down alternately, and the pair of pressing rollers are located above the gap between the front pressing roller and the rear pressing roller.

[0005] Guide grooves are provided on the inner sides of the two vertical plates of the machine base, and adjusting sliders are provided in the guide grooves. The two ends of the rear pressing roller are respectively installed on the two adjusting sliders through bearings. The second drive motor is installed on one of the adjusting sliders through a support plate. The two adjusting sliders are connected by a connecting plate. An adjusting screw rod for controlling the forward and backward movement of a pair of adjusting sliders is provided at the end of the machine base.

[0006] A mounting frame is provided on the top of the machine base, and a lever is provided on the mounting frame. Fork frames for installing pressure rollers are provided at both ends of the lever. The pressing cylinder is installed on the mounting frame and drives one of the forks to move up and down. The two forks are moved up and down alternately through the lever.

[0007] The fork frame is a Y-shaped fork frame, a vertical limiting hole is arranged on the fork handle in the middle of the Y-shaped fork frame, and a limiting rod matched with the vertical limiting hole is arranged on the mounting frame.

[0008] The fork handle and the fork body of the Y-shaped fork frame are hinged through a pin shaft.

[0009] Both ends of the fork body are respectively provided with springs connected with the mounting frame.

[0010] A film cutting assembly is arranged on the machine base at one side of the front pressing roller. The film cutting assembly comprises an electric slide and a blade arranged on a slider of the electric slide.

[0011] The utility model has the advantages that when the rolled rubber is fed between the front pressing roller and the rear pressing roller, the rubber can be quickly pressed into the gap by a pair of pressing rollers pressing down alternately, thereby improving the rubber refining efficiency; the rubber cutting component can quickly cut the rubber adhered to the front pressing roller by itself, thereby reducing the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] Figure 2 It is a structural schematic diagram of the utility model from a second viewing angle.

[0014] Figure 3 This is a schematic diagram of the installation structure of a pair of pressure rollers. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0017] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, if the terms "first", "second", etc. appear in the description of the present utility model, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0018] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0019] As shown in the accompanying drawings, the utility model includes a machine base 1, a front pressing roller 2, a rear pressing roller 3 and a pressing device. The front pressing roller 2 is installed on the machine base 1 in a fixed position, and the rear pressing roller 3 is installed on the machine base 1 in a forward and backward adjustable manner. The machine base 1 is respectively provided with a first drive motor 4 for driving the front pressing roller 2 to rotate and a second drive motor 5 for driving the rear pressing roller 3 to rotate; the pressing device includes a pair of pressing rollers 6 and a pressing cylinder 7 for driving the pair of pressing rollers 6 to press up and down alternately, and the pair of pressing rollers 6 are located above the gap between the front pressing roller 2 and the rear pressing roller 3.

[0020] The rotation speeds of the first drive motor 4 and the second drive motor 5 are different, resulting in different rotation speeds of the front pressing roller 2 and the rear pressing roller 3. The raw rubber is put into the gap between the front pressing roller 2 and the rear pressing roller 3 and is squeezed by the front pressing roller 2 and the rear pressing roller 3. At the same time, the raw rubber is torn and refined due to the different rotation speeds.

[0021] After being squeezed, the raw rubber adheres to the front pressing roller 2. The staff needs to cut the film and then roll up the pressed film, and then change the direction and put it into the gap between the front pressing roller 2 and the rear pressing roller 3 for secondary rubber refining. When the film is rolled up and put in, due to the smooth roller surface, it is difficult for the front pressing roller 2 and the rear pressing roller 3 to eat the rubber, and the raw rubber cannot quickly enter the gap. At this time, the pressing cylinder 7 starts and drives a pair of pressing rollers 6 to alternately press the raw rubber downward, applying a downward pressing force to it, so that the raw rubber can quickly enter the gap, thereby improving the rubber refining efficiency.

[0022] Preferably, guide grooves are provided on the inner sides of the two vertical plates of the machine base 1, and an adjusting slider 10 is provided in the guide groove. The two ends of the rear pressing roller 3 are respectively installed on the two adjusting sliders 10 through bearings, and the second drive motor 5 is installed on one of the adjusting sliders 10 through a support plate. The two adjusting sliders 10 are connected by a connecting plate 12, and an adjusting screw 13 for controlling the forward and backward movement of a pair of adjusting sliders 10 is provided at the end of the machine base 1.

[0023] The adjusting screw rod 13 and a pair of adjusting sliders 10 form a screw rod slide, which is used to quickly adjust the gap between the rear pressing roller 3 and the front pressing roller 2. That is, the positions of the two ends of the rear pressing roller 3 can be synchronously adjusted by an adjusting screw rod 13.

[0024] Furthermore, a mounting frame 15 is provided on the top of the machine base 1, and a lever 16 is provided on the mounting frame 15. Fork frames 17 for mounting the pressing roller 6 are respectively provided at both ends of the lever 16. The pressing cylinder 7 is installed on the mounting frame 15 and drives one of the fork frames 17 to move up and down. The two fork frames 17 are moved up and down alternately through the lever 16.

[0025] The middle part of the lever 16 is hinged on the mounting frame 15. After the pressing cylinder 7 is started, it drives one of the fork frames 17 to move, and the lever 16 moves the other fork frame 17 to the opposite direction, that is, it controls the action of a pair of pressing rollers 6 to press down alternately up and down.

[0026] Furthermore, the fork frame 17 is a Y-shaped fork frame, a vertical limiting hole is provided on the fork handle in the middle of the Y-shaped fork frame, and a limiting rod matching the vertical limiting hole is provided on the mounting frame 15.

[0027] During specific installation, both ends of the lever 16 are hinged to the fork handle of the Y-shaped fork frame, and the hinge holes at both ends of the lever 16 are long holes to avoid interference and jamming when the fork handle moves up and down.

[0028] Furthermore, the fork handle and the fork body of the Y-shaped fork frame are hinged via a pin shaft.

[0029] That is, the fork body can swing around the fork handle. The raw film has an irregular structure. When the pressure roller 6 is pressed down and subjected to the reaction force of the raw film, the pressure roller 6 changes its horizontal state and one end is tilted to play a buffering role. Under the weight of the pressure roller 6 and the thrust of the pressing cylinder 7, the raw film can be evenly squeezed downward.

[0030] Furthermore, springs 18 connected to the mounting bracket 15 are respectively provided at both ends of the fork body.

[0031] Spring 18 is a tensioning spring, which is used to apply a supporting force to the two ends of the fork body so that the two ends of the fork body remain parallel. When squeezing the raw film, the two ends of the pressure roller 6 are subjected to uneven force, and one end is tilted. Under the action of spring 18, the tilting amplitude of the pressure roller 6 can be effectively controlled. At the same time, when the fork body is lifted upward, the shaking of the fork body is also effectively prevented.

[0032] Furthermore, a film cutting assembly is provided on the machine base 1 located at one side of the front pressing roller 2 , and the film cutting assembly includes an electric slide 19 and a blade 20 installed on a slider of the electric slide 19 .

[0033] The electric slide 19 is an electric screw slide, which can be controlled by a pedal switch. After the electric slide 19 is started, the blade 20 can quickly cut the film attached to the front pressing roller 2, so that the staff can quickly roll up the film.

Claims

1. A rubber mixing mill, characterized in that The invention comprises a machine base (1), a front pressing roller (2), a rear pressing roller (3) and a material pressing device, wherein the front pressing roller (2) is fixedly mounted on the machine base (1), and the rear pressing roller (3) is adjustable forward and backward on the machine base (1), and the machine base (1) is provided with a first drive motor (4) for driving the front pressing roller (2) to rotate and a second drive motor (5) for driving the rear pressing roller (3) to rotate; the material pressing device comprises a pair of pressing rollers (6) and a material pressing cylinder (7) for driving the pair of pressing rollers (6) to alternately press up and down, and the pair of pressing rollers (6) are located above the gap between the front pressing roller (2) and the rear pressing roller (3).

2. A rubber mixing mill according to claim 1, characterized in that Guide grooves are provided on the inner sides of the two vertical plates of the machine base (1), and an adjusting slider (10) is provided in the guide groove. The two ends of the rear pressing roller (3) are respectively mounted on the two adjusting sliders (10) via bearings. The second drive motor (5) is mounted on one of the adjusting sliders (10) via a support plate. The two adjusting sliders (10) are connected via a connecting plate (12). An adjusting screw rod (13) for controlling the forward and backward movement of a pair of adjusting sliders (10) is provided at the end of the machine base (1).

3. A rubber mixing mill according to claim 1, characterized in that A mounting frame (15) is provided on the top of the machine base (1), and a lever (16) is provided on the mounting frame (15). Fork frames (17) for mounting a pressure roller (6) are provided at both ends of the lever (16). The pressing cylinder (7) is mounted on the mounting frame (15) and drives one of the fork frames (17) to move up and down. The two fork frames (17) move up and down alternately via the lever (16).

4. A rubber mixing mill according to claim 3, characterized in that The fork frame (17) is a Y-shaped fork frame, a vertical limit hole is provided on the fork handle in the middle of the Y-shaped fork frame, and a limit rod matching the vertical limit hole is provided on the mounting frame (15).

5. A rubber mixing mill according to claim 4, characterized in that The fork handle and the fork body of the Y-shaped fork frame are hinged through a pin shaft.

6. A rubber mixing mill according to claim 4, characterized in that Springs (18) connected to the mounting frame (15) are respectively provided at both ends of the fork body.

7. A rubber mixing mill according to claim 1, characterized in that A film cutting assembly is provided on the machine base (1) located on one side of the front pressing roller (2), and the film cutting assembly comprises an electric slide (19) and a blade (20) mounted on a slider of the electric slide (19).

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