Open mill

Abstract

The utility model relates to the technical field of rubber production equipment, in particular to an open mill. Comprising a rack, two rollers driven by a power device are rotationally connected to the rack, a controller is further arranged on the rack, a material disc is arranged below the rollers, an opening is formed in the rear side of the material disc, a discharging port is located in the middle of the opening, and the three sides of the bottom of the material disc are gradually lowered from the edge to the discharging port. A tongue plate is arranged at the position of the discharging port, the rear side of the material disc is rotationally connected with the middle of a plate handle of a material blocking plate, the bottom face of the material blocking plate can fall on the tongue plate so as to block the discharging port, and a material conveying device which can move away the material blocking plate so as to receive raw materials in the material disc and can throw the raw materials between the two rollers is arranged on the rear side of the rack. According to the utility model, raw materials falling on the charging tray from the position between the two rollers can be automatically put into the position between the two rollers for continuous rubber mixing, so that the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber production equipment, in particular to an open mixing mill. Background Art

[0002] Open mixing mill is the abbreviation of open rubber mixing mill. Its main working parts are two hollow rollers rotating inward in opposite directions. The two rollers are generally the same size and rotate relative to each other at different speeds. The raw rubber or rubber material is drawn into the gap between the two rollers as the rollers rotate, and is subjected to strong shearing to achieve the purpose of plastication or mixing. In the existing rubber mixing mill, when the material is added, some raw materials will fall from between the two rollers onto the material tray, and need to be picked up by hand and put between the two rollers to continue mixing, which is labor-intensive. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an open mixing mill in view of the above-mentioned technical deficiencies.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: an open mixing mill, comprising a frame, on which two rollers driven by a power device are rotatably connected, and a controller is also provided on the frame, and a material tray is provided below the roller, the rear side of the material tray is an opening and the discharge port is located in the middle of the opening, and the three sides of the bottom of the material tray gradually decrease from the edge to the discharge port, and a tongue plate is provided at the discharge port, and the rear side of the material tray is rotatably connected to the middle part of the plate handle of the baffle plate, and the bottom surface of the baffle plate can fall on the tongue plate to block the discharge port, and the rear side of the frame is provided with a material transport device that can remove the baffle plate to receive the raw materials in the material tray and can put the raw materials into the two rollers.

[0005] In a preferred example, the utility model can be further configured as follows: the material transporting device includes a bracket arranged at the rear side of the frame, the bracket is slidably connected with a material box driven by a lifting drive device, the side of the material box close to the frame is provided with side plates on both sides, the bottom end of the bucket plate is rotatably connected to the side of the side plate close to the bracket, the two sides of the material box are slidably connected with support rods, a spring that can push the support rod upward is arranged between the top of the support rod and the top surface of the material box, the two ends of the push strip are respectively hinged to the support rod and the upper end of the bucket plate, and the bucket plate tilts forward in a direction from bottom to top when in a natural state, and blocks that prevent the support rod from continuing to rise are arranged on both sides of the top of the bracket, and a pressure rod is arranged on one side of the material box, and when the upper end of the material box is lower than the tongue plate and continues to descend, the pressure rod can press down the end of the plate handle away from the tongue plate to open the discharge port.

[0006] In a preferred example, the present invention can be further configured as follows: a paddle extending rearward is provided at one end of the plate handle away from the tongue plate.

[0007] In a preferred example, the utility model can be further configured as follows: the lifting drive device is a screw rod rotatably connected to the bracket and a motor capable of driving the screw rod to rotate, and a nut threadably connected to the screw rod is provided on one side of the material box.

[0008] In a preferred example, the utility model can be further configured as follows: right-angled triangular baffles are provided on both sides of the bucket plate, rotating shafts are provided on both sides of the lower end of the bucket plate, and hinge shafts are provided on both sides of the upper end of the bucket plate.

[0009] In a preferred example, the utility model can be further configured as follows: the power device is a motor and a reducer transmission-connected thereto.

[0010] Compared with the prior art, the utility model has the following advantages: 1. It can automatically put the raw materials dropped from between the two rollers onto the material tray into between the two rollers so as to continue rubber refining, thereby reducing the labor intensity of workers; 2. When the material box descends, the baffle plate can be removed to receive the raw materials in the material tray. The structure is relatively simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a structural schematic diagram of an open mixing mill.

[0012] Figure 2 It is a schematic diagram of the structure of the material tray.

[0013] Figure 3 It is a structural schematic diagram of the material transport device.

[0014] Figure 4 It is a structural diagram of the bucket plate.

[0015] In the figure: 1, frame; 2, controller; 3, material tray; 31, tongue plate; 32, material baffle plate; 321, plate handle; 322, paddle; 4, bracket; 41, baffle; 5, material box; 51, pressure rod; 52, side plate; 53, bucket plate; 531, baffle; 532, rotating shaft; 533, hinge shaft; 54, support rod; 55, push strip. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0017] Specific implementation method: Combination Figure 1-4As shown, an open mill comprises a frame 1, on which two rollers driven by a power device are rotatably connected, and a controller 2 is also provided on the frame 1, and a material tray 3 is provided below the roller, the rear side of the material tray 3 is an opening and the discharge port is located in the middle of the opening, and the three sides of the bottom of the material tray 3 gradually decrease from the edge to the discharge port, and the bottom of the material tray 3 is composed of three plates, wherein the plates on the left and right sides gradually decrease in the direction from the edge to the discharge port, and the plates on the front side gradually decrease in the direction from the front to the discharge port. The rear side of the frame 1 is provided with a material transporting device which can remove the baffle plate 32 to receive the raw materials in the material tray 3 and put the raw materials into the two rollers.

[0018] The material transport device includes a bracket 4 arranged at the rear side of the frame 1, and a material box 5 driven by a lifting drive device is slidably connected to the bracket 4. Side panels 52 are arranged on both sides of the material box 5 close to the frame 1. The side panels 52 are preferably rectangular, and the bottom end of the bucket plate 53 is rotatably connected to the side of the side panel 52 close to the bracket 4. Support rods 54 are slidably connected to both sides of the material box 5. A spring that can push the support rod 54 upward is arranged between the top of the support rod 54 and the top surface of the material box 5. The two ends of the push bar 55 are respectively hinged to the upper ends of the support rod 54 and the bucket plate 53. When in a natural state, the bucket plate 53 tilts forward in a direction from bottom to top (a spring that can prevent the support rod 54 from tilting can be arranged at the lower end of the support rod 54). Continue to move the blocking piece upward relative to the material box 5 to keep the bucket plate 53 in this posture. At this time, the upper end of the bucket plate 53 cannot continue to move upward and backward). Blocks 41 are set on both sides of the top of the bracket 4 to block the support rod 54 from continuing to rise. When the bottom of the material box 5 is slightly higher than the top of the roller, the top of the support rod 54 contacts the block 41. After that, when the material box 5 continues to rise, the push bar 55 pushes the upper end of the bucket plate 53 downward to make it rotate. Until the original upper end of the bucket plate 53 is lower than the original lower end by a certain distance, the material box 5 stops rising. In this process, the original upper end of the bucket plate 53 moves a certain distance toward the direction of the roller and passes the highest point of the rear roller. The raw materials in the material box 5 can fall between the two rollers. A pressure rod 51 is provided on one side of the material box 5. When the upper end of the material box 5 is lower than the tongue plate 31 and continues to descend, the pressure rod 51 can press down the end of the plate handle 321 away from the tongue plate 31 to open the discharge port. The rotation connection point of the plate handle 321 is close to the end of the plate handle 321 away from the discharge port. Therefore, after the pressure rod 51 contacts the plate handle 321, it only needs to continue to move downward a small distance to make the baffle plate 32 separate from the discharge port. When the material box 5 is raised, under the action of gravity, the baffle plate 32 will fall down to block the discharge port.

[0019] The end of the plate handle 321 away from the tongue plate 31 is provided with a paddle 322 extending backward. The paddle 322 can be longer, and the pressing rod 51 can be pressed on the paddle 322 .

[0020] The lifting drive device is a screw rod rotatably connected to the bracket 4 and a motor capable of driving the same to rotate. A nut threadably connected to the screw rod is provided on one side of the material box 5. The rotation of the screw rod can drive the material box 5 to lift.

[0021] The two sides of the bucket plate 53 are provided with right-angled triangular baffles 531, the two sides of the lower end of the bucket plate 53 are provided with rotating shafts 532, the rotating shafts 532 are rotatably connected to the side plates 52, and the two sides of the upper end of the bucket plate 53 are provided with hinge shafts 533 for hinge connection with the push bar 55. The baffles 531 can largely prevent the raw materials from falling from the two sides of the bucket plate 53, and the blocking sheet does not need to be provided at the lower end of the support rod 54.

[0022] The power device is a motor and a reducer connected thereto.

[0023] When using, combine Figure 1 As shown, the raw materials dropped from between the two rollers fall on the material tray 3 and gather at the discharge port, and the controller 2 controls the material box 5 to descend. When the upper end of the material box 5 is slightly lower than the tongue plate 31, the pressure rod 51 contacts the plate handle 321, and the material box 5 continues to descend. The material baffle plate 32 rises, and the raw materials in the material tray 3 fall into the material box 5. After a pause of a few seconds, the material box 5 rises, and when the top of the support rod 54 contacts the block 41, the bucket plate 53 rotates. When the bucket plate 53 rotates to a horizontal state and continues to rotate, the raw materials in the material box 5 fall between the two rollers to continue rubber mixing. After a pause of a few seconds, the material box 5 descends for the next material transportation work. During this process, due to the action of the spring, the bucket plate 53 is reset.

[0024] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An open mill, comprising a frame (1), two rollers driven by a power device being rotatably connected to the frame (1), a controller (2) being further provided on the frame (1), and a material tray (3) being provided below the rollers, characterized in that: The rear side of the material tray (3) is an opening and the discharge port is located in the middle of the opening. The three sides of the bottom of the material tray (3) gradually decrease from the edge to the discharge port. A tongue plate (31) is provided at the discharge port. The rear side of the material tray (3) is rotatably connected to the middle of a plate handle (321) of a baffle plate (32). The bottom surface of the baffle plate (32) can fall on the tongue plate (31) to block the discharge port. The rear side of the frame (1) is provided with a material transport device capable of removing the baffle plate (32) to receive the raw materials in the material tray (3) and putting the raw materials between the two rollers.

2. An open mixing mill according to claim 1, characterized in that: The material transport device comprises a bracket (4) arranged at the rear side of the frame (1), a material box (5) driven by a lifting drive device being slidably connected to the bracket (4), side plates (52) being arranged on both sides of the side of the material box (5) close to the frame (1), the bottom end of the bucket plate (53) being rotatably connected to the side of the side plate (52) close to the bracket (4), support rods (54) being slidably connected to both sides of the material box (5), and a spring capable of lifting the support rod (54) upwards being arranged between the top of the support rod (54) and the top surface of the material box (5). The two ends of the push bar (55) are respectively hinged to the support rod (54) and the upper end of the bucket plate (53). When in a natural state, the bucket plate (53) tilts forward from bottom to top. Blocks (41) are provided on both sides of the top of the bracket (4) to prevent the support rod (54) from continuing to rise. A pressing rod (51) is provided on one side of the material box (5). When the upper end of the material box (5) is lower than the tongue plate (31) and continues to descend, the pressing rod (51) can press down one end of the plate handle (321) away from the tongue plate (31) to open the discharge port.

3. A mixing mill according to claim 2, characterized in that: One end of the plate handle (321) away from the tongue plate (31) is provided with a paddle (322) extending backwards.

4. A mixing mill according to claim 2, characterized in that: The lifting drive device comprises a screw rod rotatably connected to the bracket (4) and a motor capable of driving the screw rod to rotate, and a nut threadably connected to the screw rod is provided on one side of the material box (5).

5. An open mixing mill according to claim 2, characterized in that: Right-angled triangular baffles (531) are provided on both sides of the bucket plate (53), rotating shafts (532) are provided on both sides of the lower end of the bucket plate (53), and hinge shafts (533) are provided on both sides of the upper end of the bucket plate (53).

6. An open mixing mill according to any one of claims 1 to 5, characterized in that: The power device is a motor and a reducer connected thereto.

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