Open mill with material breaking function

Abstract

The utility model discloses a kind of opening mill with material breaking function, it is related to opening equipment technical field, the utility model includes pedestal, front roller, rear roller, material blocking subassembly and material breaking subassembly.Working, operator manually rotates crank handle, utilizes the reverse external thread of screw to drive two baffle synchronous reverse movement along guide rod, and the interval is quickly adjusted to adapt to different width material;After mixing and refining are completed, through electric push rod to push swing arm to drive support shaft rotation, and then make cutter close to front roller, cutter is absorbed contact impact force by the elastic cooperation of link plate and spring, realizes material safe cutting off.The opening mill solves the problem that the cutter of existing opening mill is easy to scratch roller, improves material mixing stability and material breaking safety, reduces equipment maintenance cost, improves production efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of open mill equipment, and in particular relates to an open mill with a material cutting function. Background Technology

[0002] As a core piece of equipment in the processing of polymer materials such as rubber and plastics, the open mixing mill mainly generates shearing and extrusion forces through the relative rotation of the front and rear rollers to achieve plasticizing, mixing, and homogenization of materials. It is widely used in industries such as tire manufacturing, seal production, and rubber product processing. By adding a material cutting component, the rubber material adhering to the roller surface can be automatically cut off after the material is mixed, replacing the traditional manual cutting method, reducing manual intervention, and improving production continuity and operational safety.

[0003] Existing open mills with material cutting functions still have significant shortcomings in practical applications. The cutters in their material cutting components are mostly rigid, fixed structures, making it impossible to flexibly adjust the contact pressure between the cutter and the roller surface during the material cutting action. During the mixing process, the roller surface may develop minor bumps or unevenness due to material thickness fluctuations, raw material particle impurities, or mechanical transmission errors causing contact position misalignment when the cutter rotates to its correct position. This can lead to hard collisions between the rigid cutter and the roller surface, resulting in scratches and wear, and increasing equipment maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide an open mill with a material cutting function, which solves the problem that the cutter in the existing material cutting components is mostly a rigid fixed structure, which easily leads to roller scratches and wear, thereby affecting the uniformity of material mixing and increasing equipment maintenance costs.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is an open mill with a material cutting function, including a base, a front roller and a rear roller, characterized in that: a material blocking assembly is installed on the top of the base, and a material cutting assembly located below the front roller is installed between the two opposite inner sides of the base;

[0007] The material cutting assembly includes two support plates that are fixedly installed on opposite inner sides of the base. A support shaft is rotatably installed between the two support plates. Two connecting blocks are fixedly sleeved on the periphery of the support shaft. A connecting plate is fixedly installed on one side of both connecting blocks. A cutter is slidably fitted on one side of the connecting plate.

[0008] The present invention is further configured such that two sliding grooves are provided on one side of the connecting plate, a limiting plate is fixedly installed in the sliding groove, and a limiting rod located inside the sliding groove is fixedly connected to one side of the limiting plate.

[0009] The present invention is further configured such that a connecting plate is sleeved through the periphery of the limiting rod, the connecting plate is slidably engaged with the slide groove, both connecting plates are fixedly connected to the same side of the cutter, and a spring is sleeved between the limiting plate and the connecting plate on the periphery of the limiting rod.

[0010] The present invention is further configured such that an electric push rod is fixedly installed on one inner side of the base, and a swing arm is hinged to the output end of the electric push rod, and the end of the swing arm away from the electric push rod is fixedly connected to the support shaft.

[0011] The present invention is further configured such that the material blocking assembly includes two support seats symmetrically and fixedly installed on the top of the base, a guide rod is fixedly connected between the two support seats, and two baffles are symmetrically and slidably sleeved on the periphery of the guide rod.

[0012] The present invention is further configured such that the same screw is threadedly connected to the two baffles, the screw is rotatably installed between the two support seats, and two external threads are sequentially opened on the circumferential side of the screw, the helical directions of the two external threads being opposite.

[0013] The present invention is further configured such that a crank handle is fixedly connected to one end of the screw.

[0014] This utility model has the following beneficial effects:

[0015] 1. When this utility model is in operation, by turning the crank, the two baffles can be driven to adjust the spacing synchronously in the opposite direction along the guide rod by means of the reverse external thread of the screw. It can quickly adapt to the mixing materials of different widths, effectively avoid the problem of uneven mixing thickness caused by the overflow of materials from both ends of the roller, and improve the convenience and adaptability of the baffle adjustment.

[0016] 2. In the material cutting process, the cutter achieves elastic buffering through the cooperation of the connecting plate and the spring, which can automatically absorb the instantaneous impact force when in contact with the front roller, completely solving the defect of traditional rigid cutters that are prone to scratching the roller, reducing equipment maintenance costs, and ensuring stable material cutting effect.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the material blocking assembly;

[0021] Figure 3 This is a schematic diagram of the material cutting assembly.

[0022] Figure 4 This is a structural diagram of the cutter mounting area.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Base; 2. Front roller; 3. Rear roller; 4. Material stop assembly; 5. Material cut-off assembly; 6. Support plate; 7. Support shaft; 8. Connecting block; 9. Connecting plate; 10. Cutter; 11. Slide groove; 12. Limiting plate; 13. Limiting rod; 14. Connecting plate; 15. Spring; 16. Electric push rod; 17. Swing arm; 18. Support seat; 19. Guide rod; 20. Baffle; 21. Screw; 22. External thread; 23. Crank handle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation

[0027] Please see Figure 1-4 This utility model is an open mill with a material cutting function, including a base 1, a front roller 2 and a rear roller 3. The front roller 2 and the rear roller 3 are the core mixing components of the open mill. Through the relative rotation of different linear speeds, they generate shearing and extrusion action on the material to achieve mixing and plasticizing of the material. Since the linear speed of the front roller 2 is slightly faster than that of the rear roller 3, this speed difference causes the raw material to gradually adhere to the surface of the front roller 2 during the roller process. A material blocking component 4 is installed on the top of the base 1, and a material cutting component 5 located below the front roller 2 is installed between the two opposite inner sides of the base 1.

[0028] Specifically, the material cutting assembly 5 includes two support plates 6 fixedly installed on opposite inner sides of the base 1. A support shaft 7 is rotatably installed between the two support plates 6. Two connecting blocks 8 are fixedly sleeved on the periphery of the support shaft 7. A connecting plate 9 is fixedly installed on one side of the two connecting blocks 8. A cutter 10 is slidably fitted on one side of the connecting plate 9. The support shaft 7 is the core transmission component of the material cutting assembly 5. By rotating itself, it drives the connecting blocks 8, the connecting plate 9 and the cutter 10 to rotate synchronously, thereby adjusting the position of the cutter 10. The connecting plate 9 provides a mounting carrier for the cutter 10. The cutter 10 is the key component for realizing the material cutting function. By contacting the surface of the front roller 2, it uses shearing force to cut the material on the roller. The relative sliding design between the cutter 10 and the connecting plate 9 can avoid the cutter 10 rigidly contacting the roller and causing damage to the roller.

[0029] Two sliding grooves 11 are provided on one side of the connecting plate 9. A limiting plate 12 is fixedly installed in the sliding groove 11. A limiting rod 13 located inside the sliding groove 11 is fixedly connected to one side of the limiting plate 12. A connecting plate 14 is sleeved through the periphery of the limiting rod 13. The connecting plate 14 slides with the sliding groove 11. Both connecting plates 14 are fixedly connected to the same side of the cutter 10. A spring 15 located between the limiting plate 12 and the connecting plate 14 is sleeved on the periphery of the limiting rod 13. The sliding groove 11 provides guidance for the sliding of the connecting plate 14, ensuring that the connecting plate 14 drives the cutter 10 to move only along the direction of the sliding groove 11 and avoids deviation. The limiting plate 12 is used to fix the limiting rod 13. 3. Simultaneously, it provides a support surface for the spring 15. The limiting rod 13 limits the sliding of the connecting plate 14, preventing the connecting plate 14 from disengaging from the slide groove 11 during the sliding process, thus ensuring structural stability. The connecting plate 14, as an intermediate component connecting the cutter 10 and the limiting rod 13, transmits the elastic force of the spring 15 to the cutter 10, realizing the elastic buffer of the cutter 10. The spring 15 has an elastic reset function. When the cutter 10 contacts the front roller 2, the spring 15 can absorb the impact force through compression, so that the cutter 10 always adheres to the roller surface with appropriate pressure, which not only ensures the material cutting effect, but also avoids damage to the cutter 10 and the front roller 2 due to rigid collision.

[0030] An electric push rod 16 is fixedly installed on one inner side of the base 1. A swing arm 17 is hinged to the output end of the electric push rod 16. The end of the swing arm 17 away from the electric push rod 16 is fixedly connected to the support shaft 7. The electric push rod 16 provides the power source for the rotation of the material cutting assembly 5. Through the extension and retraction of the electric push rod 16, the swing arm 17 is pushed to rotate around the axis of the support shaft 7. The swing arm 17, as a power transmission component, converts the linear motion of the electric push rod 16 into the rotational motion of the support shaft 7, thereby realizing the rotational control of the support shaft 7. The hinge end between the swing arm and the electric push rod is designed as a "long strip groove". A pin is fixed at the output end of the electric push rod. The pin slides in the groove. When the swing arm rotates around the support shaft, the pin can slide along the groove and move linearly with the push rod. The composite action of "sliding + rotation" compensates for the trajectory deviation and avoids the risk of jamming.

[0031] Furthermore, the baffle assembly 4 includes two support seats 18 symmetrically fixedly installed on the top of the base 1. A guide rod 19 is fixedly connected between the two support seats 18. Two baffles 20 are symmetrically slidably sleeved on the circumferential side of the guide rod 19. The same screw 21 is threaded through the two baffles 20. The screw 21 is rotatably installed between the two support seats 18. Two external threads 22 are sequentially opened on the circumferential side of the screw 21. The helical directions of the two external threads 22 are opposite. A crank handle 23 is fixedly connected to one end of the screw 21. The guide rod 19 guides the sliding of the baffles 20, preventing the baffles 20 from rotating and deviating when the screw 21 rotates, ensuring that the baffles 20 slide only along the guide rod 19. The rod 19 moves along its axis, and the baffle 20 is used to block the lateral diffusion of material on the roller. By adjusting the distance between the two baffles 20, it can adapt to the mixing requirements of materials of different widths and prevent the material from overflowing from both ends of the roller, resulting in uneven material thickness after mixing. The screw 21 provides power transmission for the movement of the baffle 20. The two opposite spiral external threads 22 on its circumference enable the two baffles 20 to move synchronously in opposite directions when the screw 21 rotates, realizing the rapid adjustment of the distance between the two baffles 20. The crank handle 23 allows the operator to manually rotate the screw 21 to adjust the distance between the two baffles 20. The operation is convenient and the adjustment accuracy is high.

[0032] The operation process of this embodiment is as follows: First, the operator manually rotates the crank handle 23, which drives the screw 21 to rotate around its own axis. Since the screw 21 has two external threads 22 with opposite spiral directions on its circumference, and the two baffles 20 are respectively threadedly connected to the two external threads 22, the guide rod 19 plays a guiding and limiting role on the baffles 20, so that the two baffles 20 move synchronously in opposite directions along the axis of the guide rod 19 until the distance between the two baffles 20 is adapted to the width of the material to be mixed, thus completing the adjustment of the material blocking range. Next, the block or granular raw material is placed in the range of the two baffles 20 between the front roller 2 and the rear roller 3, and the open mill drive system is started, which drives the front roller 2 and the rear roller 3 to rotate relative to each other at different linear speeds (the linear speed of the front roller 2 is slightly faster than that of the rear roller 3). The raw material is pulled into the gap under the shearing and squeezing action of the two rollers, and gradually adheres to the surface of the front roller 2 under the action of the speed difference, thus starting the mixing and plasticizing. After the materials are mixed, the electric push rod 16 is activated. The output end of the electric push rod 16 extends and pushes the swing arm 17 to rotate around the axis of the support shaft 7. The swing arm 17 drives the support shaft 7 to rotate synchronously. The support shaft 7 drives the connecting plate 9 to rotate through the connecting block 8. The connecting plate 9 then drives the cutter 10 to move closer to the front roller 2 until the cutter 10 contacts the surface of the front roller 2. At this time, if there is an instantaneous impact force between the cutter 10 and the front roller 2, the spring 15 will absorb the impact force through compression. At the same time, the elastic force is transmitted to the cutter 10 through the connecting plate 14, so that the cutter 10 always adheres to the surface of the front roller 2 with appropriate pressure. The shearing force is used to cut off the material attached to the front roller 2. After the material is cut off, the output end of the electric push rod 16 is retracted, and the swing arm 17 drives the support shaft 7 to rotate in the opposite direction. The connecting plate 9 and the cutter 10 move away from the front roller 2. Finally, the operator removes the cut material, completing a complete mixing and cutting operation.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A two-roll mill with a material cutting function, comprising a base (1), a front roller (2), and a rear roller (3), characterized in that: A material blocking assembly (4) is installed on the top of the base (1), and a material cutting assembly (5) located below the front roller (2) is installed between the two inner sides of the base (1); The material cutting assembly (5) includes two support plates (6) fixedly installed on opposite inner sides of the base (1), a support shaft (7) is rotatably installed between the two support plates (6), two connecting blocks (8) are fixedly sleeved on the periphery of the support shaft (7), a connecting plate (9) is fixedly installed on one side of the two connecting blocks (8), and a cutter (10) is slidably fitted on one side of the connecting plate (9).

2. The open mill with material cutting function according to claim 1, characterized in that, Two sliding grooves (11) are provided on one side of the connecting plate (9). A limiting plate (12) is fixedly installed in the sliding groove (11). A limiting rod (13) located inside the sliding groove (11) is fixedly connected to one side of the limiting plate (12).

3. A two-roll mill with a material cutting function according to claim 2, characterized in that, The limiting rod (13) has a connecting plate (14) sleeved through its periphery. The connecting plate (14) is slidably engaged with the slide groove (11). Both connecting plates (14) are fixedly connected to the same side of the cutter (10). The limiting rod (13) has a spring (15) sleeved between the limiting plate (12) and the connecting plate (14) sleeved on its periphery.

4. A two-roll mill with a material cutting function according to claim 3, characterized in that, An electric push rod (16) is fixedly installed on one of the inner sides of the base (1). The output end of the electric push rod (16) is hinged to a swing arm (17). The end of the swing arm (17) away from the electric push rod (16) is fixedly connected to the support shaft (7).

5. A two-roll mill with a material cutting function according to claim 4, characterized in that, The baffle assembly (4) includes two support seats (18) symmetrically fixedly installed on the top of the base (1), and a guide rod (19) is fixedly connected between the two support seats (18). Two baffles (20) are symmetrically slidably sleeved on the periphery of the guide rod (19).

6. A two-roll mill with a material cutting function according to claim 5, characterized in that, The two baffles (20) are threaded together with the same screw (21). The screw (21) is rotatably installed between the two support seats (18). The screw (21) has two external threads (22) sequentially opened on its circumferential side, and the helical directions of the two external threads (22) are opposite.

7. A two-roll mill with a material cutting function according to claim 6, characterized in that, A crank handle (23) is fixedly connected to one end of the screw (21).

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