Insert type rubber extrusion magnetic strip die

Abstract

The utility model relates to the technical field of plastic molding processing, and in particular to an insert-type rubber extrusion magnetic stripe die. An insert-type rubber extrusion magnetic stripe die comprises: a matching die and an insert, wherein the two ends of the die are respectively provided with a discharge port and a feed port, and the other side is provided with an insert gap, wherein the insert gap is interconnected with the discharge port and the feed port, and the insert is detachably installed in the insert gap, and a molding port is provided in each of the inserts. The problems of serious waste, high cost, low precision and short service life are solved. The utility model proposes an insert-type rubber extrusion magnetic stripe die, which achieves the purpose of low cost, high precision, strong adaptability, the ability to respond to product replacement at any time and long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molding and processing, in particular to an insert-type rubber extrusion magnetic strip die. Background Art

[0002] Rubber extruded magnetic strips are a kind of polymer composite material made by mixing rubber with magnetic materials such as ferrite powder and metal materials through the addition of some rubber additives. They are widely used in household refrigerators, water dispensers, renovated bathrooms, invisible doors and windows, etc. The products have the characteristics of bendability, high precision and low density. The extruded rubber magnetic strips are made of chlorinated polyethylene rubber, strontium ferrite magnetic powder and barium ferrite magnetic powder for mixing, and are made into extruded magnetic strips of corresponding specifications through mixing, crushing and extrusion molding. This process is very common in China. The extruded rubber and plastic magnetic strip series products are mainly used in refrigerators, bathrooms, water dispensers, screens, office supplies and other fields, mainly playing the role of sealing, magnetic attraction and adsorption. However, for some products with high performance and size requirements, since the ferrite material belongs to metal, the extrusion die is very worn and the die often needs to be replaced. The price of an alloy die is about 300 yuan. After the size is worn, the entire die is scrapped, which is a pity. For example, a Chinese patent with publication number CN202011139U discloses an extruder die and provides the following technical solution: the utility model provides an extruder die, the die includes an original die and a newly added die, the original die is connected to the newly added die, the original die includes a first flow channel, the contraction angle of the first flow channel is reduced, the newly added die includes a second flow channel and a newly added discharge port with a certain length, the first flow channel is smoothly connected with the second flow channel, the outlet is connected with the second flow channel, and the length ratio of the discharge port in the length direction to the width direction is (1-3): 1. The utility model extends the length of the flow channel and reduces the contraction angle to facilitate the smooth flow of materials by improving the existing die; the shape of the die discharge port is improved, and the length of the discharge port is shortened and the width of the discharge port is increased while the area of ​​the discharge port remains unchanged, and the discharge port is changed from an approximately rectangular shape to an approximately elliptical shape, thereby improving the uneven flow of materials on both sides of the discharge port.

[0003] However, the extruder die of the above structure cannot reduce the waste caused by the die wear, and cannot meet the processing and precision requirements of different products. Utility Model Content

[0004] In view of the problems of serious waste, high cost, low precision and short service life described in the background technology, the utility model proposes an insert-type rubber extrusion magnetic stripe die, which achieves the purposes of low cost, high precision, strong adaptability, ability to replace products at any time and long service life.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an insert-type rubber extrusion magnetic stripe die, comprising: a matching die and an insert, wherein the two ends of the die are respectively provided with an outlet and a feed port, and the other side is provided with an insert gap, the insert gap is connected with the outlet and the feed port, the insert can be detachably installed in the insert gap, and the insert is provided with a molding port.

[0006] This design allows the die and the insert to cooperate with each other, making the extrusion die have adjustable characteristics. The forming port of the insert connects the feed port and the discharge port, so that the rubber material can be smoothly extruded and formed into the desired magnetic strip shape.

[0007] Preferably, the discharge port of the die is arranged on a fixed insert cover plate, and the fixed insert cover plate is detachably mounted on the die.

[0008] The discharge port is set on the fixed insert cover, which is detachably mounted on the die. This design simplifies maintenance and cleaning processes while providing flexibility, allowing the fixed insert cover to be replaced or adjusted as needed.

[0009] Preferably, the insert includes a forming end insert and a plurality of transition end inserts, the diameter of the forming opening of the forming end insert is smaller than the diameter of the forming opening of the transition end insert, and two adjacent inserts are tightly fitted.

[0010] The design of the molding end insert and the transition end insert makes the diameter of the molding port gradually increase. Such a structure helps to optimize the rubber extrusion process, ensure the uniformity and stability of material flow, and reduce the fluctuation of extrusion pressure.

[0011] Preferably, the diameters of the forming openings of two adjacent transition end inserts are installed in a sequentially increasing manner from the forming end insert.

[0012] The forming port diameter of the transition end insert is installed in an incremental manner from the forming end insert, which helps to gradually adjust the fluidity and pressure distribution of the rubber material, thereby improving the controllability and stability of the extrusion process.

[0013] Preferably, the forming end insert is tightly fitted on the fixed insert cover plate, and the transition end insert with the largest diameter is tightly fitted on the feed inlet end of the die.

[0014] The forming end insert fits tightly on the fixed insert cover, while the transition end insert with the largest diameter fits tightly on the inlet end of the die. This installation method ensures the stability and position accuracy of the insert, thereby improving the consistency and production efficiency of the extrusion process.

[0015] Preferably, the center lines of the forming openings of the insert pieces are located on the same straight line, and the discharge port is connected with the feed port through the forming openings of the insert pieces.

[0016] The center lines of the molding ports of the insert are located on the same straight line, ensuring accurate alignment of the extrusion ports and uniform flow of the material. This helps to avoid deviation or unevenness during material extrusion, improving product quality and production efficiency.

[0017] Preferably, the forming openings of two adjacent inserts are aligned and flush with each other.

[0018] The molding ports of the inserts are aligned with each other to ensure the continuity and consistency of the extrusion port. This helps to reduce material leakage or irregular shapes that may occur during the extrusion process, improving product quality and production efficiency.

[0019] Preferably, the die is disc-shaped.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The design of the die and insert, the insert is detachably mounted on the die through the insert notch. This modular design allows users to easily replace or maintain individual components without having to replace the entire die. This not only reduces maintenance costs, but also improves maintenance efficiency.

[0022] 2. The fixed insert cover is detachably mounted on the die, and the discharge port is set on this fixed insert cover. This design allows users to change or replace the fixed insert cover as needed to adapt to different production requirements or material properties. This improves the flexibility and applicability of the die.

[0023] 3. The inserts include the forming end insert and the transition end insert, and the diameter of the forming opening between them gradually increases. This design can effectively optimize the rubber extrusion process, ensure that the material can flow smoothly throughout the process, and improve the uniformity of molding. At the same time, the fit between the forming end insert and the fixed insert cover plate and the gradually increasing diameter of the transition end insert help reduce possible resistance and unevenness during the extrusion process, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a cross-sectional view of an insert structure and a die structure of an embodiment of the utility model;

[0025] Figure 2 It is a combined three-view diagram of the insert structure and the die structure of an embodiment of the utility model;

[0026] Figure 3Three views of the die structure with the fixed insert cover plate removed according to one embodiment of the utility model;

[0027] Figure 4 Three views of a fixed insert cover plate of an embodiment of the utility model;

[0028] Figure 5 This is a cross-sectional view of a die structure according to an embodiment of the utility model.

[0029] Illustration: forming end insert 1, transition end inserts 2-5, fixed insert cover 6, discharge port 7, feed port 8. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present disclosure clearer, the following will further describe the embodiments of the present disclosure in detail with reference to the accompanying drawings. The proportions of the components are not drawn according to the actual proportions, and the proportions and sizes shown in the accompanying drawings should not limit the substantial technical scheme of the present utility model. These embodiments do not describe all the details in detail, nor do they limit the present utility model to only the specific embodiments described.

[0031] See also Figure 1-4 As shown, a plug-in type rubber extrusion magnetic stripe die is characterized by comprising:

[0032] The die and the insert are matched with each other, the two ends of the die are respectively provided with a discharge port and a feed port, and the other side is provided with an insert notch, the insert notch is connected with the discharge port and the feed port, the insert is detachably installed in the insert notch, and the insert is provided with a molding port.

[0033] The utility model mainly produces extruded rubber and plastic magnetic strip series products, which are mainly used in refrigerators, bathrooms, water dispensers, screens, office supplies and other fields. They mainly play the functions of sealing, magnetic attraction, adsorption and the like. The products have the characteristics of high dimensional accuracy and high suction requirements, and meet the use needs of various customer groups. The rubber extruded magnetic strip is a polymer composite material made by mixing rubber with magnetic materials such as ferrite powder and metal materials through the addition of some rubber additives. It is widely used in home appliance refrigerators, water dispensers, decorated bathrooms, invisible doors and windows and other fields. The product has the characteristics of bendability, high precision and low density. The extruded rubber magnetic strip adopts chlorinated polyethylene rubber and strontium ferrite magnetic powder and barium ferrite magnetic powder for mixing, and is made into extruded magnetic strips of corresponding specifications through banburying, crushing and extrusion molding. This process is very common in China, but for some products with high performance and size requirements, since the ferrite material belongs to metal, the extrusion die is very worn and the die often needs to be replaced. The price of an alloy die is about 300 yuan. After the size is worn, the entire die is scrapped, which is a pity. The utility model innovatively designs a plug-in rubber extrusion magnetic stripe die. The plug-in design allows the die and the plug-in to be separated, and the plug-in can be detachably installed. This improves the convenience and flexibility of maintenance. Users can more easily replace or repair individual components without replacing the entire die. For example, the plug-in at the molding end is easy to wear because it is near the extrusion port. Only the plug-in at the molding end needs to be replaced. For example, when it is necessary to produce products of different sizes, only the plug-in part needs to be replaced. Production can be carried out by replacing the plug-in of the appropriate size without replacing the entire die. This greatly improves the flexibility and applicability of the device of the utility model.

[0034] like Figure 1 and Figure 2 and Figure 5 In one embodiment shown, the design of the insert-type rubber extrusion magnetic stripe die designed by the utility model adopts a special structure. It includes two parts: a die and an insert. The die has a discharge port and a feed port, and has an insert gap on the other side. The insert gap is connected to the discharge port and the feed port, and the insert can be removably installed in the insert gap. There is a forming port inside the insert. The discharge port of the die is located on a fixed insert cover plate, and the fixed insert cover plate can be removably installed on the die. The insert includes a forming end insert and several transition end inserts. The forming port caliber of the forming end insert is smaller than the forming port caliber of the transition end insert, and adjacent inserts fit tightly. The caliber of the transition end insert gradually increases from the forming end insert to the transition end insert with the largest caliber. The forming end insert fits on the fixed insert cover plate, and the transition end insert with the largest caliber fits on the feed port end of the die. The center lines of the forming openings of all the inserts are located on the same straight line, and the discharge opening is connected to the feed opening through the forming openings of the inserts.

[0035] Traditional dies require replacement of the entire die once they are worn or damaged, while the insert design allows users to replace only the damaged part, such as the molding end insert, thereby reducing maintenance costs and repair time. The insert design allows users to replace inserts of different sizes or types as needed without replacing the entire die. In this way, when it is necessary to produce products of different sizes or shapes, only the appropriate inserts need to be replaced, and the production line can be quickly converted, which improves the flexibility and efficiency of the production line. Since the entire die does not need to be replaced frequently, the insert design can reduce maintenance and replacement costs. Although the insert itself may need to be replaced, the cost of the insert is usually lower than the price of the entire die, thereby reducing overall maintenance costs. The insert design ensures that the replaced insert fits tightly with the rest of the die, thereby maintaining the dimensional accuracy and consistency of the extruded product. Since replacing inserts is easier than replacing the entire die, it can reduce production line downtime and improve production efficiency and capacity utilization.

[0036] like Figure 3 and Figure 4 In one embodiment shown, a plug-in type rubber extrusion magnetic stripe die is characterized by comprising:

[0037] The die and the insert are matched, the two ends of the die are respectively provided with a discharge port and a feed port, and the other side is provided with an insert notch, the insert notch is connected with the discharge port and the feed port, the insert is detachably installed in the insert notch, and the insert is provided with a forming port. The discharge port of the die is arranged on a fixed insert cover plate, and the fixed insert cover plate is detachably installed on the die. The die is disc-shaped.

[0038] The die is a common extrusion molding die. The shell of the circular extrusion die designed by the utility model is made of high-strength, wear-resistant alloy steel or other metal materials. The structural design of the shell enables it to withstand high pressure and high temperature, ensuring that the mold remains stable during the production process. The feed area of ​​the mold is where the raw material first contacts the extruder. For example, in this embodiment, the raw material is ferrite magnetic powder, and the product is a rubber magnetic material composed of chlorinated polyethylene rubber, nitrile rubber, chlorosulfonated polyethylene rubber, etc. In this area, the raw material is pre-treated, usually heated, softened and compressed by the action of the screw and the heating cylinder, so as to enter the forming area of ​​the extrusion die. After entering the forming area, the softened plastic is pushed by the screw and enters the interior of the mold. The design of the forming area determines the cross-sectional shape of the final product. The molded plastic passes through the cooling area, which is a key area for quickly cooling and solidifying the extruded plastic. The cooling is usually achieved by circulating cooling water or other cooling media. Appropriate cooling ensures that the size and shape of the final product are stable. The cooled product is finally discharged from the extrusion port to form a cross-section of the desired shape. The design of the extrusion port affects the surface quality and dimensional accuracy of the final product. The die is usually equipped with some adjustment devices to fine-tune the die during the production process to ensure that the quality and specifications of the final product meet the requirements. In order to maintain the appropriate temperature of the raw materials throughout the extrusion process, the mold usually also includes a heating system, which can maintain a constant temperature during the extrusion process through electrical heating or other means. The structural design of the die of the utility model needs to take into account the characteristics of the raw materials, the extrusion process parameters and the requirements of the final product. Through reasonable design and precise manufacturing, the die designed by the utility model can efficiently and stably produce high-quality round plastic products.

[0039] The utility model provides a plug-in type rubber extrusion magnetic stripe die, and the steps of using the device are:

[0040] 1. Before using the insert-type rubber extrusion magnetic stripe die, make sure all equipment and materials are in good condition. Check the cleanliness of the die, insert, and fixed insert cover to ensure that there are no impurities on their surface. Check the condition of the rubber extruder and prepare the rubber material to be extruded;

[0041] 2. Choose the appropriate insert according to production requirements. Different inserts may produce magnetic strips of different shapes and sizes. Make sure the insert's molding port meets the product design specifications. If you need to replace the insert, stop the machine first, remove and clean the old insert, and then install the new one. Make sure the insert is installed correctly to avoid defects or waste of materials;

[0042] 3. According to the required magnetic stripe specifications and the characteristics of the rubber material, adjust the extruder parameters such as extrusion speed, temperature and pressure. Make sure these parameters match the design of the insert to obtain the best extrusion effect. Perform some test extrusions to check whether the produced magnetic stripe meets the quality standards;

[0043] 4. Before starting formal production, ensure that the alignment between the die and the insert is accurate. Check whether the center lines of the insert's molding openings are on the same straight line, and ensure that the molding openings of two adjacent inserts are aligned. Calibrate the position of the die so that the rubber material can pass through the insert molding opening smoothly;

[0044] 5. Once the preparation is complete, start the extruder to start production. The rubber material enters the die through the feed port and passes through the insert molding port to form a magnetic strip. Monitor the extrusion process to ensure the quality of the finished product is stable. If necessary, parameters can be adjusted or inserts can be replaced at any time during the production process to meet different production needs;

[0045] 6. During the extrusion process, regularly check the size, shape and surface quality of the magnetic strips. Real-time monitoring of the operating status of the extruder, such as temperature, pressure, speed and other parameters. According to the monitoring results, timely adjust the extruder parameters to ensure that the produced magnetic strips meet product standards and improve production efficiency;

[0046] 7. After the production is completed, the utility model device is turned off;

[0047] 8. Clean and maintain the die, inserts and fixed insert cover regularly. Remove any residue that may have accumulated during the production process to prevent it from affecting product quality. Check the degree of wear on the inserts and replace damaged or severely worn inserts in a timely manner to ensure that the magnetic strips produced always maintain high quality.

[0048] In summary, the utility model device is a plug-in type rubber extrusion magnetic stripe die, and its design includes the mutual cooperation of the die and the plug. The two ends of the die are respectively provided with a discharge port and a feed port, and the other side is provided with a plug gap, which is interconnected with the discharge port and the feed port. The plug can be detachably installed in the plug gap, and each plug is provided with a forming port. The discharge port is arranged on a fixed plug cover plate, and this cover plate is detachably mounted on the die. The plug includes a forming end plug and a plurality of transition end plugs, and the adjacent two plugs are tightly fitted, wherein the caliber of the forming end plug is smaller than the transition end plug, and the caliber of the transition end plug is installed in an incremental manner from the forming end plug. The center lines of the forming ports of the plug are located on the same straight line, so that the discharge port is interconnected with the feed port through the forming port of the plug. This mold has structural innovations, features such as flexible detachability, close fit and increasing caliber, and is suitable for the production of rubber extruded magnetic strips. This utility model mainly produces extruded rubber and plastic magnetic strip series products, which are mainly used in refrigerators, bathrooms, water dispensers, screens, office supplies and other fields, and mainly play the role of sealing, magnetic attraction, adsorption and other functions. The product has the characteristics of high dimensional accuracy and high suction requirements, solves the design-related correlation between the fluidity of rubber magnetic materials and the die structure, the best design solution for extrusion end molding, solves the problems of insert assembly replacement of different types of products and ensuring the size of the molding end, and meets the use needs of various customer groups.

[0049] The present invention is not limited to the above-mentioned embodiments. Regardless of any changes in shape or material composition, any structural design provided by the present invention is a variation of the present invention and should be considered within the protection scope of the present invention.

Claims

1. A plug-in rubber extrusion magnetic stripe die, characterized in that: include: The die and the insert are matched with each other, the two ends of the die are respectively provided with a discharge port and a feed port, and the other side is provided with an insert notch, the insert notch is connected with the discharge port and the feed port, the insert is detachably installed in the insert notch, and the insert is provided with a molding port.

2. The insert-type rubber extrusion magnetic stripe die according to claim 1, characterized in that: The discharge port of the die is arranged on a fixed insert cover plate, and the fixed insert cover plate is detachably mounted on the die.

3. The insert-type rubber extrusion magnetic stripe die according to claim 2, characterized in that: The inserts include a forming end insert and a plurality of transition end inserts. The diameter of the forming opening of the forming end insert is smaller than the diameter of the forming opening of the transition end insert, and two adjacent inserts are tightly fitted.

4. The insert-type rubber extrusion magnetic stripe die according to claim 3, characterized in that: The diameters of the forming openings of two adjacent transition end inserts are installed in a sequentially increasing manner from the forming end insert.

5. A plug-in type rubber extrusion magnetic stripe die according to any one of claims 3 or 4, characterized in that: The forming end insert is tightly fitted on the fixed insert cover plate, and the transition end insert with the largest diameter is tightly fitted on the feeding port end of the die.

6. The insert-type rubber extrusion magnetic stripe die according to any one of claims 1 to 3, characterized in that: The center lines of the forming openings of the insert pieces are located in the same straight line, and the discharge port is connected with the feed port through the forming openings of the insert pieces.

7. The insert-type rubber extrusion magnetic stripe die according to claim 6, characterized in that: The forming openings of two adjacent inserts are aligned with each other.

8. The insert-type rubber extrusion magnetic stripe die according to any one of claims 1 to 3, characterized in that: The die is in a disc shape.

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