A scraper assembly for a rubber mixing mill

Abstract

The utility model relates to a rubber mixing mill scraper assembly, which relates to the technical field of mixing mills, and solves the problems of low automation and the need for an operator to tap rubber when each mixing mill discharges rubber, which increases labor costs and reduces sheeting efficiency. It includes relatively arranged support frames, a scraper seat rotatably connected between two of the support frames, a scraper arranged on the scraper seat, and a driving member arranged on the support frame. The scraper on the scraper seat has at least two states, namely, a scraping state of entering the scraping working position and a withdrawal state of withdrawing from the scraping working position. The driving member is used to drive the scraper seat to rotate so that the scraper can switch between the two states; it has the effect of replacing manual rubber tapping operations with scrapers, reducing labor costs, and having a high degree of automation.

Description

Technical Field

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

[0002] Open rubber mixing mill is called open mixing mill for short. It is one of the important and commonly used equipment in rubber processing equipment and is widely used in various rubber processing fields. The open mixing mill is mainly composed of a frame, relatively rotating rollers, a transmission and reduction device, a heating and cooling device, a distance adjustment device and a safety brake device, a swing rubber sheet device, etc.

[0003] In the actual processing, the open mixer is used in conjunction with the internal mixer, that is, one internal mixer is equipped with three open mixers. The internal mixer mixes the rubber. After reaching the temperature or time required by the process, the block-like mixed rubber is discharged to the first open mixer. The first open mixer rolls to cool the rubber mixed by the internal mixer, presses it into sheets, and further refines and refining it to make the mixed rubber more evenly dispersed and sent to the second open mixer. The second open mixer can add sulfur and refining to the cooled mixed rubber. After refining evenly, it is sent to the third open mixer. The third open mixer mainly produces sheets or strips for the mixed rubber that has been sulfured and refining according to the process requirements, and sends it to the next vulcanization process for standby use.

[0004] When the rubber is pressed into sheets through an open mixing mill, some of the mixed rubber materials are easy to be wrapped on the roller of the open mixing mill when being pressed into sheets due to their own performance characteristics and hardness. Therefore, in order to ensure normal sheeting, the mixed rubber wrapped on the roller of the open mixing mill needs to be cut or split by on-site staff before the film can be produced. This method has a low degree of automation, and each open mixing mill needs to be equipped with an operator to cut the rubber when producing film, which increases labor costs and has low filming efficiency. Utility Model Content

[0005] The utility model aims to provide a rubber mixing mill scraper assembly, which solves the problems of low automation and the need for an operator to cut rubber when each mixing mill produces rubber sheets, which increases labor costs and reduces sheet production efficiency.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The utility model provides a scraper assembly for a rubber mixing mill. The rubber mixing mill comprises a frame and two rollers relatively and rotatably arranged in the frame. A scraper working position is arranged on the opposite sides of the two rollers. The scraper assembly is arranged at each scraper working position. The scraper assembly comprises relatively arranged support frames, a scraper seat rotatably connected between the two support frames, a scraper arranged on the scraper seat and a driving member arranged on the support frame. The scraper on the scraper seat has at least two states: a scraping state of entering the scraper working position and a revocation state of withdrawing from the scraper working position. The driving member is used to drive the scraper seat to rotate so that the scraper can switch between the two states.

[0008] Furthermore, the driving member includes a driving cylinder hinged on the supporting frame and a rotating rod hinged to the telescopic end of the driving cylinder, and the other end of the rotating rod is connected to the scraper seat.

[0009] Furthermore, the scraper seat is provided with a stepped surface, and the scraper is detachably connected to the stepped surface via an adjusting member.

[0010] Furthermore, the adjusting member includes an inverted T-shaped groove arranged on the cross surface of the step surface, at least one T-shaped bolt arranged in the inverted T-shaped groove and a fastening nut threadedly connected to the main body of the T-shaped bolt, and a through hole for the main body of the T-shaped bolt to pass through is arranged on the handle of the scraper.

[0011] Furthermore, the number of the driving members is two and they are respectively arranged on two supporting frames.

[0012] Furthermore, the blade edge of the scraper is coated with an anti-stick coating.

[0013] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0014] The utility model provides a rubber mixing mill scraper assembly, in which the scraper and the scraper seat of the scraper assembly are split and detachable structures, which are beautiful and practical in appearance and convenient for adjusting the contact distance between the scraper and the roller of the mixing mill; and the scraper replaces the manual scraping operation, thereby reducing labor costs and having a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0016] Figure 1It is a structural schematic diagram of the scraper in the preferred embodiment of the utility model in the state of scraping glue;

[0017] Figure 2 It is a structural schematic diagram of the scraper in the preferred embodiment of the utility model in a withdrawn state;

[0018] Figure 3 It is a structural schematic diagram of the scraper assembly in the preferred embodiment of the utility model.

[0019] The reference numerals are described as follows:

[0020] 1. Frame; 2. Roller; 3. Support frame; 4. Scraper seat; 5. Scraper; 6. Driving member; 61. Driving cylinder; 62. Rotating rod; 7. Step surface; 8. Adjusting member; 81. Inverted T-shaped groove; 82. T-shaped bolt; 83. Fastening nut; 9. Through hole. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the scraper assembly or element of the rubber mill 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 invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] refer to Figure 1 , Figure 2 and Figure 3, a rubber mill scraper assembly provided by the utility model, the rubber mill comprises a frame 1 and two rollers 2 relatively and rotatably arranged in the frame, the two rollers 2 are provided with scraper working positions on the opposite sides, each scraper working position is provided with a scraper assembly, the scraper assembly comprises a relatively arranged support frame 3, a scraper seat 4 rotatably connected between the two support frames 3, a scraper 5 arranged on the scraper seat 4 and a driving member 6 arranged on the support frame 3, the scraper 5 on the scraper seat 4 has at least two states of a scraper state of entering the scraper working position and a withdrawal state of withdrawing from the scraper working position, the driving member 6 is used to drive the scraper seat 4 to rotate so that the scraper 5 can switch between the two states. The length of the scraper 5 corresponds to the length of the roller 2.

[0025] refer to Figure 1 , Figure 2 and Figure 3 After the rubber compound is heat-refined or refined by the internal mixer and discharged into sheets, the rubber compound needs to be discharged into the open mixer and pressed into sheets by the open mixer. When the internal mixer material door is opened to discharge the rubber compound, the driving member 6 drives the scraper seat 4 to rotate after receiving the internal mixer material door opening signal, so that the scraper 5 enters the scraping working position and is in the scraping state, that is, the blade of the scraper 4 contacts the outer edge surface of the roller 2. After that, when the rubber compound is pressed into sheets by the open mixer, if the film roll wrapping performance is relatively good, it will appear with the roller 2. When the rotating film wraps around the roller, the scraper 5 can be used to cut and scrape the film, thereby solving the problem of the rubber film wrapping around the roller during the sheet discharging process of the mixing mill. The scraped rubber film is transported to the internal mixer through the conveyor belt for further mixing or the pressed film is transported to the next process; at the same time, the drive member 6 drives the scraper seat 4 to rotate and withdraw the scraper 5 from the scraping working position, that is, the scraper 5 leaves the roller 2, and then waits for the next sheet discharging signal of the mixing mill, and repeats the above actions over and over again.

[0026] refer to Figure 1 , Figure 2 and Figure 3 Therefore, when the open mill is pressing out sheets, the scraper assembly of this structure can scrape the rubber sheet wrapped on the roller from the roller 2, ensuring the normal sheet production of the open mill, effectively improving production efficiency, improving the level of equipment automation, reducing labor input, and thus reducing labor costs.

[0027] refer to Figure 1 , Figure 2 and Figure 3The driving member 6 includes a driving cylinder 61 hinged on the support frame 3 and a rotating rod 62 hinged to the telescopic end of the driving cylinder 61. The other end of the rotating rod 62 is connected to the scraper seat 4. The driving member 6 has a simple structure and is easy to operate. There are two driving members 6, which are respectively arranged on two support frames 3. The two driving members 6 drive the scraper seat 4 to rotate stably. The driving cylinder 61 can be started and stopped by automatic control and manual control. The two start and stop methods can flexibly select the control method according to the process requirements of the operation site.

[0028] refer to Figure 1 , Figure 2 and Figure 3 The scraper seat 4 is provided with a stepped surface 7, and the scraper 5 is detachably connected to the stepped surface 7 through an adjusting member 8. The stepped surface 7 can limit and resist the scraper 5, so that the scraper 5 is firmly and stably fixed on the scraper seat 4; the adjusting member 8 includes an inverted T-shaped groove 81 arranged on the transverse surface of the stepped surface 7, at least one T-shaped bolt 82 arranged in the inverted T-shaped groove 81, and a fastening nut 83 threadedly connected to the main body of the T-shaped bolt 82. The handle of the scraper 5 is provided with a through hole 9 for the main body of the T-shaped bolt 82 to pass through. The position of the scraper 5 on the scraper seat 4 can be adjusted by the adjusting member 8, so that the blade of the scraper 5 can better fit the outer edge surface of the roller 2, thereby improving the scraping accuracy. The blade edge of the scraper 5 is set at an R angle and is coated with an anti-stick coating. The R angle is used to prevent the scraper 5 from being too sharp and easily damaging the outer edge surface of the roller 2. The anti-stick coating is made of polytetrafluoroethylene material to avoid the phenomenon of sticking glue on the scraper.

[0029] In summary: the scraper and scraper seat in the scraper assembly of this mechanism are split and detachable structures, which are beautiful and practical in appearance, and convenient for adjusting the contact distance between the scraper and the roller; and the scraper replaces the manual scraping operation, which reduces labor costs and has a high degree of automation.

[0030] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A scraper assembly for a rubber mixing mill, the rubber mixing mill comprising a frame (1) and two rollers (2) arranged relative to and rotatably in the frame (1), the two rollers (2) being provided with a scraper working position on the opposite sides thereof, characterized in that: The scraper assembly is arranged at each scraper working position, and the scraper assembly comprises supporting frames (3) arranged opposite to each other, a scraper seat (4) rotatably connected between the two supporting frames (3), a scraper (5) arranged on the scraper seat (4), and a driving member (6) arranged on the supporting frame (3). The scraper (5) on the scraper seat (4) has at least two states: a scraping state of entering the scraper working position and a withdrawal state of withdrawing from the scraper working position. The driving member (6) is used to drive the scraper seat (4) to rotate so that the scraper (5) can be switched between the two states.

2. The rubber mixing mill scraper assembly according to claim 1, characterized in that: The driving member (6) comprises a driving cylinder (61) hinged on the supporting frame (3) and a rotating rod (62) hinged to the telescopic end of the driving cylinder (61), and the other end of the rotating rod (62) is connected to the scraper seat (4).

3. The rubber mixing mill scraper assembly according to claim 1 or 2, characterized in that: The scraper seat (4) is provided with a stepped surface (7), and the scraper (5) is detachably connected to the stepped surface (7) via an adjusting member (8).

4. The scraper assembly for a rubber mixing mill according to claim 3, characterized in that: The adjusting member (8) comprises an inverted T-shaped groove (81) arranged on the transverse surface of the stepped surface, at least one T-shaped bolt (82) arranged in the inverted T-shaped groove (81), and a fastening nut (83) threadedly connected to the main body of the T-shaped bolt (82), and a through hole (9) for the main body of the T-shaped bolt (82) to pass through is arranged on the handle of the scraper (5).

5. The rubber mixing mill scraper assembly according to claim 1 or 4, characterized in that: The number of the driving members (6) is two and they are respectively arranged on two support frames (3).

6. The scraper assembly for a rubber mixing mill according to claim 5, characterized in that: The blade edge of the scraper (5) is coated with an anti-stick coating.

Images