Rubber mixing device for film production

Abstract

The utility model is suitable for the technical field of rubber mixing equipment, and discloses a rubber mixing device for thin film production, which comprises a first machine base, a second machine base, a material pressing roller, a material receiving disc, a first transmission roller, a second transmission roller and a driving mechanism. According to the utility model, the first transmission roller and the second transmission roller which play a role in pulling materials are arranged above the material receiving disc of the rubber mixing device, so that the cut-off thin film offcut can be conveyed to the material receiving disc, and then the cut-off thin film offcut can be conveyed to the material receiving disc by virtue of the rotating material pressing roller; when an existing rim charge recycling mechanism is used, a material pulling device of the rim charge recycling mechanism is independently arranged and cannot be directly arranged above a material receiving disc or a material pressing roller of a rubber mixing device, so that the rim charges on the material receiving disc are wound into a gap between two material pressing rollers to be subjected to rubber mixing treatment, and the material pulling device cannot be directly arranged above the material receiving disc or the material pressing roller of the rubber mixing device. When the rim charge recycling mechanism is used, the rim charge of the film cannot be conveyed to the material receiving disc or the gap between the two material pressing rollers, so that compared with the prior art, the rim charge recycling mechanism solves the problem that the existing rim charge recycling mechanism cannot be well matched with the rubber mixing mill for use.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber mixing equipment, in particular to a rubber mixing device for film production. Background Art

[0002] PVC film is a kind of film material made of PVC (polyvinyl chloride) material, which has excellent chemical resistance, weather resistance and plasticity. According to different uses and requirements, PVC film can have different thicknesses, colors, textures and surface characteristics, enabling it to be used in fields such as architectural decoration, food packaging, medical supplies, advertising signs, etc.

[0003] After the PVC film is formed by the calendering process, it needs to be appropriately cut on both sides to meet the customer's requirements for the film size. At the same time, the two sides of the PVC film are smoother after cutting, and the winding quality is good. Usually, the cut edge materials will be pulled to the feeding place of the production line through an edge material recycling mechanism (such as the edge material recycling mechanism disclosed in the publication number CN209289418U), remelted and extruded, and then calendered into shape.

[0004] However, some mixing machines under the PVC film production line are not equipped with a melting and extruding machine. Instead, after the raw materials for producing the PVC film are mixed evenly, they are directly fed into the rubber mixing machine, and the raw materials reach better fluidity and plasticity through the rubber mixing machine, so as to facilitate subsequent calendering. The existing edge material recycling mechanism cannot cooperate well with the rubber mixing machine, so that the edge materials of the PVC film cannot be directly recycled into the rubber mixing machine for rubber mixing treatment.

[0005] It can be seen that the existing technology still needs to be improved. Content of the Utility Model

[0006] The purpose of the utility model is to provide a rubber mixing device for film production, aiming to solve the problem that the existing edge material recycling mechanism cannot cooperate well with the rubber mixing machine, so that the edge materials of the PVC film cannot be directly recycled into the rubber mixing machine for rubber mixing treatment.

[0007] To achieve the above purpose, the solution provided by the utility model is:

[0008] A rubber mixing device for film production, including a first machine base and a second machine base arranged in parallel, two pressure rollers arranged in parallel between the first machine base and the second machine base, and a receiving tray located below the pressure rollers; further including:

[0009] An installation frame, the installation frame is arranged inside the first machine base, and the installation frame is located in front of the two pressure rollers,

[0010] A first transmission roller, the first transmission roller is rotatably arranged on the installation frame, and the axial direction of the first transmission roller is parallel to the axial direction of the pressure rollers,

[0011] A second transfer roller, which is rotatably arranged on the mounting frame and is parallel and above the first transfer roller.

[0012] A driving mechanism, which is arranged on the first machine base, and the output shaft of the driving mechanism is in transmission connection with the first transfer roller.

[0013] Wherein, the first transfer roller and the second transfer roller are used for pulling materials, so that the edge materials pass through the gap between the first transfer roller and the second transfer roller, and the edge materials fall on the material receiving tray.

[0014] Preferably, the driving mechanism is arranged inside the first machine base, and the driving mechanism is connected with a belt transmission mechanism; the belt transmission mechanism includes a driving wheel fixedly arranged on the output shaft of the driving mechanism, a driven wheel coaxially arranged with the first transfer roller, and a transmission belt wound around the driving wheel and the driven wheel at the same time.

[0015] Preferably, a movable door facing the driving mechanism is arranged on the outer side of the first machine base.

[0016] Preferably, a plurality of heat dissipation holes are arranged on the movable door.

[0017] Preferably, the rubber mixing device for film production further includes:

[0018] A limiting roller, which is vertically and drivably arranged on the mounting frame, and the limiting roller is located in front of the first transfer roller and the second transfer roller.

[0019] Preferably, the rubber mixing device for film production further includes:

[0020] An air suction hood, which is arranged above the two pressure roller cylinders.

[0021] An exhaust pipe, which is connected with the air suction hood.

[0022] Preferably, the air suction hood is arranged on the top of the first machine base and the top of the second machine base at the same time, and an opening is arranged on the lower side of the front part of the air suction hood.

[0023] Preferably, the rubber mixing device for film production further includes:

[0024] A blanking channel, the upper end of the blanking channel is connected with a mixer, the lower end of the blanking channel extends into the air suction hood, and the lower end is located above the gap between the two pressure roller cylinders.

[0025] Preferably, the blanking channel includes a vertical channel and an inclined channel connected together; the inclined channel extends into the air suction hood obliquely.

[0026] Beneficial effects:

[0027] The utility model provides a rubber mixing device for film production. By arranging the first transmission roller and the second transmission roller for pulling materials above the material receiving tray of the rubber mixing device, the cut film edge materials can be conveyed onto the material receiving tray of the rubber mixing device, and then with the help of the rotating pressing roller cylinder, the edge materials on the material receiving tray are rolled into the gap between the two pressing roller cylinders for rubber mixing treatment. When the existing edge material recycling mechanism is in use, its material pulling device is independently arranged and cannot be directly arranged above the material receiving tray or the pressing roller cylinder of the rubber mixing device, so that the film edge materials cannot be conveyed onto the material receiving tray or into the gap between the two pressing roller cylinders. Therefore, compared with the prior art, the utility model solves the problem that the existing edge material recycling mechanism cannot be well matched with the rubber mixer for use. Brief Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0029] Figure 1 is the structural schematic diagram of the rubber mixing device for film production provided by the present utility model Figure 1 .

[0030] Figure 2 is Figure 1 the enlarged view of part A in

[0031] Figure 3 is the structural schematic diagram of the rubber mixing device for film production provided by the present utility model Figure 2 .

[0032] Figure 4 is Figure 3 the enlarged view of part B in

[0033] Figure 5 is the structural schematic diagram of the rubber mixing device for film production provided by the present utility model Figure 3 .

[0034] Explanation of the Reference Numerals in the Drawings:

[0035] 1 - First machine base; 2 - Second machine base; 3 - Pressing roller cylinder; 4 - Material receiving tray; 5 - Mounting frame; 6 - First transmission roller; 7 - Second transmission roller; 8 - Driving mechanism;

[0036] 9 - Belt transmission mechanism; 901 - Driving wheel; 902 - Driven wheel; 903 - Transmission belt;

[0037] 10 - Movable door; 101 - Heat dissipation holes;

[0038] 11 - Limiting roller;

[0039] 12 - Suction hood; 121 - Opening;

[0040] 13 - Exhaust pipe;

[0041] 14 - Feeding channel; 141 - Vertical channel; 142 - Oblique channel. Specific embodiments

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly.

[0044] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0045] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0046] Please refer to Figures 1 to 4 , the present invention provides a rubber mixing device for film production, including a first machine base 1, a second machine base 2, a pressure roller 3, a receiving tray 4, a mounting bracket 5, a first transmission roller 6, a second transmission roller 7, and a driving mechanism 8.

[0047] Among them, the first machine base 1 and the second machine base 2 are arranged in parallel. There are two nip rollers 3, which have the same height and are rotatably arranged between the first machine base 1 and the second machine base 2. A gear reduction box (not shown in the drawings) is arranged on one side of the rubber mixing device, and the gear reduction box is connected to a driving motor. At the same time, the gear reduction box is connected to the two nip rollers 3 through two transmission shafts, so that when the driving mechanism 8 is working, the two nip rollers 3 can rotate in opposite directions, so that the raw materials such as PVC resin mixed by the mixer can be squeezed between the high-temperature nip rollers 3 (heat-conducting oil is circulated in the nip rollers 3), and the PVC resin achieves better fluidity and plasticity. The receiving tray 4 can be movably arranged below the two nip rollers 3, so that the rubber material dropped during the rubber mixing process can be received.

[0048] The mounting frame 5 is arranged on the inner side of the first machine base 1, and the mounting frame 5 is located in front of the two pressing rollers 3. The first transmission roller 6 is rotatably arranged on the mounting frame 5, and the axial direction of the first transmission roller 6 is parallel to the axial direction of the pressing roller 3; the second transmission roller 7 is rotatably arranged on the mounting frame 5, and is located above the first transmission roller 6 in parallel. The second transmission roller 7 and the first transmission roller 6 can form a clamping state for the film edge material. Specifically, the driving mechanism 8 can be a driving motor, which is arranged on the first machine base 1, and its output shaft is transmission-connected with the first transmission roller 6, and is used to drive the first transmission roller 6 to rotate at a high speed, so that the first transmission roller 6 and the second transmission roller 7 are used together to pull the material, so that the edge material generated after the film trimming passes through the gap between the first transmission roller 6 and the second transmission roller 7, and the edge material can fall on the receiving plate 4. After the scraps fall onto the receiving plate 4, the nip roller 3 near the front side of the rubber mixing device can pull the scraps so that the scraps are rolled into the gap between the two nip rollers 3, so that the scraps can be squeezed between the high-temperature nip rollers 3. The scraps can be melted like PVC resin to achieve better fluidity and plasticity, and can be used for calendering PVC film, thereby realizing the recycling of PVC film scraps.

[0049] It can be seen that the utility model arranges the first transmission roller 6 and the second transmission roller 7 for pulling materials above the receiving tray 4 of the rubber mixing device, so that the cut film edge materials can be transported to the receiving tray 4 of the rubber mixing device, and then with the help of the rotating pressing roller 3, the edge materials on the receiving tray 4 are rolled into the gap between the two pressing rollers 3 for rubber mixing. When the existing edge material recovery mechanism is in use, its pulling device is independently arranged and cannot be directly arranged above the receiving tray 4 or the pressing roller 3 of the rubber mixing device, so that the film edge materials cannot be transported to the receiving tray 4 or the gap between the two pressing rollers 3. Therefore, compared with the prior art, the utility model solves the problem that the existing edge material recovery mechanism cannot be well used in conjunction with the rubber mixing machine.

[0050] likeFigure 3 and Figure 4 As shown in Figure 4 , in a preferred embodiment of the present utility model, the driving mechanism 8 is disposed inside the first machine base 1, and the driving mechanism 8 is connected with a belt transmission mechanism 9; the belt transmission mechanism 9 includes a driving wheel 901 fixedly disposed on the output shaft of the driving mechanism 8, a driven wheel 902 coaxially disposed with the first transmission roller 6, and a transmission belt 903 wound around the driving wheel 901 and the driven wheel 902 simultaneously.

[0051] Disposing the driving mechanism 8 and the belt transmission mechanism 9 inside the first machine base 1 can prevent the driving mechanism 8 from being exposed to high-temperature and high-humidity environments for a long time, thereby extending the service life of the driving mechanism 8; at the same time, when the driving mechanism 8 and the belt transmission mechanism 9 are disposed inside the first machine base 1, the space in front of the two pressure roller cylinders 3 is occupied less, and it will not affect the production personnel to perform rubber cutting operations on the rubber material on the pressure roller cylinders 3.

[0052] As Figure 3 shown, in a preferred embodiment of the present utility model, a movable door 10 facing the driving mechanism 8 is disposed on the outer side of the first machine base 1. The connection manner between the movable door 10 and the outer side of the first machine base 1 can be hinged.

[0053] By disposing the movable door 10 on the outer side of the first machine base 1, it is convenient for production personnel to maintain the driving mechanism 8 and the belt transmission mechanism 9 inside the first machine base 1.

[0054] As Figure 3 and Figure 4 shown, in a preferred embodiment of the present utility model, a plurality of heat dissipation holes 101 are disposed on the movable door 10. The provision of the heat dissipation holes 101 enables the heat generated when the driving mechanism 8 (driving motor) runs at high speed to be transferred to the outside through the heat dissipation holes 101, and the temperature inside the first machine base 1 will not be too high, thereby reducing potential safety hazards.

[0055] As Figure 1 and Figure 2 shown, in a preferred embodiment of the present utility model, the rubber mixing device for film production further includes a limiting roller 11. The limiting roller 11 is vertically and drivingly disposed on the mounting frame 5, and the limiting roller 11 is located in front of the first transmission roller 6 and the second transmission roller 7.

[0056] Before the film edge material enters the gap between the first transmission roller 6 and the second transmission roller 7, the edge material will bypass the side of the limiting roller 11 and drive the limiting roller 11 to rotate, so that the moving path of the edge material can be restricted, and the edge material can pass through the gap between the first transmission roller 6 and the second transmission roller 7.

[0057] As Figure 1 、 Figure 3 and Figure 5As shown, in a preferred embodiment of the present utility model, the rubber mixing device for film production further includes a suction hood 12 and an exhaust pipe 13. The suction hood 12 is arranged above the two pressure rollers 3, and the suction hood 12 is connected to the exhaust pipe 13. The exhaust pipe 13 can be directly connected to the waste gas treatment system set up by the enterprise (the waste gas treatment system is usually composed of a spray tower, an activated carbon adsorption device, a draft fan, etc.), so that the harmful waste gas generated during rubber mixing can be transported to the waste gas treatment system for treatment, and the environment in the production workshop can be improved.

[0058] As Figure 1 , Figure 3 and Figure 5 shown, in a preferred embodiment of the present utility model, the suction hood 12 is simultaneously arranged on the top of the first machine base 1 and the top of the second machine base 2, and an opening 121 is arranged on the lower side of the front part of the suction hood 12, so that production personnel can observe the rubber mixing situation below the suction hood 12, and at the same time ensure that production personnel can carry out production operations.

[0059] For the rear part of the suction hood 12, it can extend downward to block the rear end of the pressure roller 3, so as to prevent a large amount of waste gas from being discharged into the workshop from the rear of the rubber mixing device.

[0060] As Figure 1 , Figure 3 and Figure 5 shown, in a preferred embodiment of the present utility model, the rubber mixing device for film production further includes a feeding channel 14. The upper end of the feeding channel 14 is connected to a mixer. The feeding channel 14 is of a pipe structure. Its lower end extends into the suction hood 12, and this lower end is located above the gap between the two pressure rollers 3.

[0061] After the mixer mixes the raw materials required for producing PVC film, the discharge valve at the bottom of the mixer is opened, so that the raw materials are directly put onto the pressure roller 3 through the feeding channel 14; and the lower end of the feeding channel 14 extends into the suction hood 12, which can prevent the dust generated during raw material feeding from entering the workshop, further improving the environment of the production workshop.

[0062] More preferably, the air inlet of the exhaust pipe in the dust suction hood should be far away from the feeding channel 14, so that the raw materials are not easily sucked away by the exhaust pipe.

[0063] As Figure 3 and Figure 5 shown, in a preferred embodiment of the present utility model, the feeding channel 14 includes a vertical channel 141 and an inclined channel 142 connected together; the inclined channel 142 extends obliquely into the suction hood 12. The setting of the inclined channel 142 makes the raw materials in the feeding channel 14 more likely to slide down along the bottom of the feeding channel 14 onto the pressure roller 3, ensuring that the raw materials are fully put in.

[0064] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the inventive concept of the present utility model, or any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present utility model.

Claims

1. A rubber mixing device for film production, comprising a first machine base and a second machine base arranged in parallel, two nip rollers arranged in parallel between the first machine base and the second machine base, and a receiving plate located below the nip rollers; characterized in that: Also includes: The mounting frame is arranged on the inner side of the first machine base and is located in front of the two pressing rollers. a first transmission roller, wherein the first transmission roller is rotatably arranged on the mounting frame, and the axial direction of the first transmission roller is parallel to the axial direction of the nip roller, a second transmission roller, the second transmission roller is rotatably disposed on the mounting frame and is located parallel to and above the first transmission roller, A driving mechanism, wherein the driving mechanism is arranged on the first machine base, and an output shaft of the driving mechanism is drivingly connected to the first transmission roller; The first conveying roller and the second conveying roller are used for pulling the material, so that the edge material passes through the gap between the first conveying roller and the second conveying roller, and the edge material falls on the receiving plate.

2. The rubber mixing device for film production according to claim 1, characterized in that: The driving mechanism is arranged inside the first machine base and is connected to a belt transmission mechanism; the belt transmission mechanism includes a driving wheel fixed on the output shaft of the driving mechanism, a driven wheel coaxially arranged with the first transmission roller, and a transmission belt wound around the driving wheel and the driven wheel at the same time.

3. The rubber mixing device for film production according to claim 2, characterized in that: A movable door facing the driving mechanism is arranged on the outer side of the first base.

4. The rubber refining device for film production according to claim 3, characterized in that: The movable door is provided with a plurality of heat dissipation holes.

5. The rubber refining device for film production according to claim 1, characterized in that: Also includes: The limiting roller is vertically driven and arranged on the mounting frame, and the limiting roller is located at the front side of the first transmission roller and the second transmission roller.

6. The rubber mixing device for film production according to claim 1, characterized in that: Also includes: A suction hood, wherein the suction hood frame is arranged above the two pressing rollers; An exhaust pipe is connected with an air suction hood.

7. The rubber refining device for film production according to claim 6, characterized in that: The air suction hood is arranged on the top of the first base and the top of the second base at the same time, and an opening is arranged on the lower front side of the air suction hood.

8. The rubber refining device for film production according to claim 6, characterized in that: Also includes: A material discharge channel, the upper end of which is connected to a mixer, the lower end of which extends into the suction hood, and the lower end is located above the gap between the two pressing rollers.

9. The rubber refining device for film production according to claim 8, characterized in that: The material discharge channel comprises a vertical channel and an oblique channel connected together; the oblique channel extends obliquely into the suction hood.

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