Low temperature machine extrusion stable easy adjustment mold

Abstract

The utility model discloses a low temperature machine extrusion stable easy -to -adjust type mould includes the integral type die sleeve of die port heating block, die core, front cover plate, eccentric debugging screw, flow divider, machine head main body, back cover plate, fastening module, die core connecting rod front -back displacement nut, die core connecting rod, the utility model discloses the structure size of originally belonging to die port heating module and die sleeve is combined and reaches new effect, die sleeve function area, effectively combines two kinds of moulds, effectively reduces and reduces the number of mould, improves the dimensional tolerance accuracy, improves the strength of mould and the stability degree in the operation process.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, specifically relating to a low-temperature extrusion stable and easily adjustable mold. Background Technology

[0002] The current development trend of the sheath extrusion industry is towards high performance. With the continuous improvement of the performance requirements of low-temperature sheaths in various industries, such as the wire and cable field, sheaths are required to have better insulation performance and low-temperature resistance. Low-temperature sheath extrusion machines need to be able to meet the requirements of producing high-performance sheath materials. Through the improvement and optimization of equipment, the extrusion quality can be improved to ensure the stable and reliable performance of the sheaths.

[0003] In the future, low-temperature extrusion molding machines will further develop towards green and environmentally friendly directions to meet increasingly stringent environmental requirements. For example, this includes researching and using more environmentally friendly raw materials, such as bio-based plastics and biodegradable plastics, to reduce reliance on traditional petroleum-based plastics; simultaneously, equipment design and manufacturing will place greater emphasis on resource recycling, improving energy efficiency, and reducing carbon emissions. Optimizing production processes will also improve production efficiency and product quality.

[0004] High Precision and High Quality: Increased market competition will drive low-temperature extrusion molding machines to continuously improve product precision and quality. The equipment will be equipped with more advanced extrusion dies and control systems, enabling more precise dimensional control and more uniform wall thickness distribution, improving the appearance quality and performance stability of the molding. Currently, there are ongoing efforts to overcome the issue of eccentricity adjustment in molding, but while some progress has been made, the problem persists and cannot be solved using intelligent technologies. Currently, most low-temperature molding machines use a traditional die-sleeve and die-core combination. The die-core is fitted with a die-sleeve, and the die-sleeve is fitted with a heating module. During die loading, the eccentricity between the die-sleeve and die-core is adjusted by controlling the up-down and left-right displacement of the heating module using eccentric nuts around the die-sleeve. This method indirectly affects the die-sleeve, making adjustment extremely inconvenient. Furthermore, each nut tightening requires a large amplitude, but the actual displacement adjusted to the die-sleeve is small, requiring multiple adjustments and making it difficult to grasp the pattern. Another method is to use a non-adjustable mold. This method involves making the die head, die sleeve, and die core into a fixed shape. The heating mold holds the die sleeve in place by using a fitting gap, and the die sleeve holds the die core in place. For traditional molds, this method can indeed effectively improve the efficiency of eccentricity adjustment and achieve a non-adjustable effect. However, due to the precision issues in the current mold and fixture processing process, as well as the dimensional sensitivity of the extruded sheath material itself, in most cases, this non-adjustable mold is not up to standard and cannot be used on the original traditional die head. It requires significant modifications or even a complete replacement of the die head, which is costly and cannot guarantee the actual effect. If there are errors in the mold precision or concentricity, resulting in fitting gap problems, the non-adjustable mold will not only cause eccentricity in the output after being installed on the sheath extruder, but it also cannot be adjusted and must be scrapped. Utility Model Content

[0005] To address the problems in existing technologies, this utility model provides a stable and easily adjustable low-temperature extrusion mold. It features simple installation and use, easy adjustment, and significantly reduces and mitigates eccentricity caused by pressure applied to the mold sleeve during material extrusion, effectively improving product quality. It also significantly reduces the time and difficulty of eccentricity adjustment during manual operation. Compared to molds that do not require adjustment, the overall cost is reduced by 80% to 95%. Compared to traditional mold cores and sleeves, eccentricity adjustment efficiency is increased by 2 times, and the difficulty is reduced by 2 times. Eccentricity problems caused by the pressure of the plasticized material on the mold sleeve and mold core during operation can be 100% prevented. Once the eccentricity of the mold sleeve and mold core is adjusted to the appropriate position during the initial adjustment stage after mold loading and material discharge, it will remain largely unchanged during subsequent operations, eliminating the need for secondary adjustments.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: It includes an integrated mold sleeve for the mold heating block, a mold core, front cover screws, a front cover plate, an eccentric adjustment screw, a distributor, a machine head body, a rear cover screw, a rear cover plate, a fastening module, a front-to-back displacement nut for the mold core connecting rod, and a mold core connecting rod. The distributor is inserted from the rear of the machine head body and then fixed to the machine head body by the rear cover plate and rear cover screws. The mold core and the mold core connecting rod are fastened together by threaded connection, and then inserted from the rear cover plate to a predetermined position. The front-to-back displacement nut for the mold core connecting rod is fastened to the appropriate position by threaded connection. The fastening module is fastened to the front-to-back displacement nut for the mold core connecting rod by threaded connection. The integrated mold sleeve for the mold heating block is pushed in from the head of the mold core and flush with the machine head body. Then, the integrated mold sleeve for the mold heating block is fixed to the machine head body by the front cover screws and the front cover plate. Finally, the eccentric position of the integrated mold sleeve for the mold heating module and the mold core is adjusted by the eccentric adjustment screws in the four directions (up, down, left, and right).

[0007] Preferably, the integrated mold sleeve of the mold heating block is made of 45 steel, which has good comprehensive mechanical properties, moderate strength and hardness, and good toughness.

[0008] Preferably, the integrated mold sleeve of the mold heating block is made of 45 steel and its total length is ≥75mm.

[0009] Preferably, the integrated mold sleeve of the mold heating block is made of 45 steel and its mold sleeve thickness is ≥3mm.

[0010] Preferably, the integrated mold sleeve of the mold heating block is made of 45 steel. The structure of the mold sleeve and the mold heating block are combined into one, which achieves a new effect. The mold sleeve functional area effectively combines the two molds into one, effectively reducing the number of molds, improving the dimensional tolerance accuracy, and improving the strength and stability of the mold during operation.

[0011] Preferably, the integrated mold sleeve of the mold heating block is made of 45 steel, which combines the original structural dimensions of the mold heating module and the mold sleeve into one, achieving a new effect. The mold heating module area is a thermocouple connection point, which is heated by threaded connection.

[0012] Preferably, the mold core is made of 45 steel, which has good comprehensive mechanical properties, moderate strength and hardness, and good toughness.

[0013] Preferably, the mold core is made of 45# steel and has a total length of ≥58mm.

[0014] Preferably, the mold core is made of 45# steel and its nozzle length is ≥4mm.

[0015] Preferably, the screws on the front cover plate are made of 304 stainless steel for enhanced fastening.

[0016] Preferably, the front cover screws are made of 304 stainless steel with an M10 socket head cap screw with a thread length of 50mm for easy insertion.

[0017] Preferably, the front cover screws are made of 304 stainless steel and there are 4 pieces.

[0018] Preferably, the front cover screws are made of 304 stainless steel, and there are 4 pieces in total. They are vertically distributed on the front of the front cover in four directions (up, down, left, and right) to strengthen the fastening.

[0019] Preferably, the front cover is made of 304 stainless steel, which has extremely high strength and stability.

[0020] Preferably, the front cover is made of 304 stainless steel and has a length of 105mm and a width of 105mm.

[0021] Preferably, the front cover is made of 304 stainless steel and has a thickness of 32mm.

[0022] Preferably, the front cover is made of 304 stainless steel and is processed from a single substrate, which has extremely high strength and stability.

[0023] Preferably, the eccentric adjustment screw is made of 304 stainless steel.

[0024] Preferably, the eccentric adjustment screw is made of 304 stainless steel with an M10 thread length of 50mm.

[0025] Preferably, the eccentric adjustment screws are made of 304 stainless steel and are in quantity of 4 pieces.

[0026] Preferably, the eccentric adjustment screws are made of 304 stainless steel and are 4 pieces in number. They are vertically distributed on the four sides of the front cover plate in the four directions of up, down, left and right, which can effectively adjust the eccentric position of the integrated heating block mold sleeve and mold core during the mold loading process and operation.

[0027] Preferably, the distributor is made of mold steel with H13 base material, which can effectively divide the plasticized material to ensure uniformity during plastic extrusion and has high hardness and wear resistance.

[0028] Preferably, the distributor is made of H13 mold steel with a working temperature of -20~550℃.

[0029] Preferably, the main body of the machine head is made of H13 mold steel, which has stable support, high strength, high hardness and wear resistance.

[0030] Preferably, the main body of the machine head is made of H13 base material mold steel, with a length ≥120mm, a width ≥120mm, and a height ≥150mm.

[0031] Preferably, the main body of the die head is made of H13 mold steel, with a working temperature range of -20 to 550℃. Preferably, the screws on the rear cover plate are made of 304 stainless steel for enhanced fastening.

[0032] Preferably, the screws on the rear cover plate are made of 304 stainless steel with an M10 socket head cap screw with a thread length of 50mm for easy insertion.

[0033] Preferably, the rear cover screws are made of 304 stainless steel and there are 4 pieces.

[0034] Preferably, the screws on the rear cover plate are made of 304 stainless steel, and there are 4 pieces in total. They are vertically distributed on the four sides of the rear cover plate in the four directions of up, down, left and right to strengthen the fastening.

[0035] Preferably, the rear cover plate is made of 304 stainless steel, which has extremely high strength and stability.

[0036] Preferably, the rear cover plate is made of 304 stainless steel and has a length of 105mm and a width of 105mm.

[0037] Preferably, the rear cover plate is made of 304 stainless steel with a thickness of 20mm.

[0038] Preferably, the rear cover plate is made of 304 stainless steel and is processed from a single substrate, resulting in extremely high strength and stability.

[0039] Preferably, the fastening module is made of 304 stainless steel, which has extremely high strength and stability.

[0040] Preferably, the fastening module is made of 304 stainless steel and has a diameter of 85mm.

[0041] Preferably, the fastening module is made of 304 stainless steel with a thickness of 36mm.

[0042] Preferably, the fastening module is made of 304 stainless steel as the base material and is processed from a single base material, which has extremely high strength and stability.

[0043] Preferably, the front and rear displacement nut of the mold core connecting rod is made of 304 stainless steel.

[0044] Preferably, the front and rear displacement nut of the mold core connecting rod is made of 304 stainless steel, and its hexagonal nut outer diameter is 64mm.

[0045] Preferably, the front and rear displacement nut of the mold core connecting rod is made of 304 stainless steel, and its thread connection diameter is 44mm.

[0046] Preferably, the front and rear displacement nut of the mold core connecting rod is made of 304 stainless steel and has a total length of 56mm.

[0047] Preferably, the front-to-back displacement nut of the mold core connecting rod is made of 304 stainless steel and is machined from a single piece of base material, resulting in extremely high strength and stability.

[0048] Preferably, the mold core connecting rod is made of 304 stainless steel.

[0049] Preferably, the mold core connecting rod is made of 304 stainless steel and has a diameter of 32mm.

[0050] Preferably, the mold core connecting rod is made of 304 stainless steel and has a length of 315mm.

[0051] Preferably, the mold core connecting rod is made of 304 stainless steel and is manufactured from a single piece of base material.

[0052] Furthermore, the integrated mold sleeve for the mold heating block is made of 45 steel, which has good comprehensive mechanical properties, moderate strength and hardness, and good toughness. Its total length is ≥75mm, which can effectively improve support and strength, and ensure that it does not deform during installation and high-temperature operation.

[0053] Furthermore, the integrated mold sleeve with the mold heating block is constructed from 45# steel. The design combines the original structural dimensions of the mold heating module and the mold sleeve into one, achieving a new effect. The mold sleeve functional area effectively integrates the two molds into one, significantly reducing the number of molds, improving dimensional tolerances, enhancing mold strength, and increasing stability during operation. The mold sleeve thickness is ≥3mm, effectively guaranteeing strength and ensuring no deformation during installation and high-temperature operation.

[0054] Furthermore, the integrated mold sleeve of the mold heating block adopts a structure of No. 45 steel, in which the structural dimensions of the original mold heating module and the mold sleeve are combined into one to achieve a new effect. The mold heating module area is a thermocouple connection point, which is heated by threaded connection.

[0055] Furthermore, the mold core is made of 45 steel, which has good comprehensive mechanical properties, moderate strength and hardness, and good toughness. Its total length is ≥58mm and its nozzle length is ≥4mm, which effectively ensures strength and ensures that it will not deform during installation and high-temperature operation. This size is convenient for adjusting the eccentricity and pressure state in accordance with the mold sleeve size.

[0056] Furthermore, the front cover screws are made of 304 stainless steel, with an M10 socket head cap screw with a thread length of 50mm, and a quantity of 4 pieces. They are vertically distributed on the front of the front cover 4 in four directions (up, down, left, and right) to strengthen the fastening and facilitate internal insertion.

[0057] Furthermore, the front cover is made of 304 stainless steel, with a length of 105mm, a width of 105mm, and a thickness of 32mm. It is made from a single piece of base material, resulting in extremely high strength and stability.

[0058] Furthermore, the eccentric adjustment screws are made of 304 stainless steel, with an M10 thread length of 50mm, and a quantity of 4 pieces. They are vertically distributed on the four sides of the front cover plate in the four directions of up, down, left, and right, which can effectively adjust the eccentric position of the integrated heating block mold sleeve and mold core during the mold loading process and operation.

[0059] Furthermore, the distributor uses H13 mold steel as the base material, which can effectively divide the plastic material to ensure uniformity during plastic extrusion. It has high hardness and wear resistance, and the working temperature can reach -20~550℃.

[0060] Furthermore, the main body of the machine head is made of H13 mold steel with a length ≥120mm, a width ≥120mm, and a height ≥150mm. It has stable support, high strength, high hardness and wear resistance, and can operate at temperatures from -20 to 550℃.

[0061] Furthermore, the screws on the rear cover plate are made of 304 stainless steel, with an M10 socket head cap screw with a thread length of 50mm, and there are 4 pieces in total. They are vertically distributed on the four sides of the rear cover plate 9 in the four directions of up, down, left, and right, to strengthen the fastening and facilitate the internal insertion.

[0062] Furthermore, the rear cover is made of 304 stainless steel, with a length of 105mm, a width of 105mm, and a thickness of 20mm. It is made from a single piece of base material, resulting in extremely high strength and stability.

[0063] Furthermore, the fastening module is made of 304 stainless steel, with a diameter of 85mm and a thickness of 36mm. It is made from a single piece of base material, resulting in extremely high strength and stability.

[0064] Furthermore, the front and rear displacement nut of the mold core connecting rod is made of 304 stainless steel. Its hexagonal nut has an outer diameter of 64mm and is threaded. The threaded connection diameter is 44mm and the total length is 56mm. It is made of a single base material. By cooperating with the mold core connecting rod through the thread, the front and rear displacement size is adjusted, thereby changing the pressure and discharge of plastic material between the mold core and the mold heating block integrated mold sleeve.

[0065] Furthermore, the mold core connecting rod is made of 304 stainless steel, with a diameter of 32mm and a length of 315mm. It is made from a single piece of base material and is connected to the mold core via threads, serving as a core wire guide. The threaded connection rod also adjusts the front and rear displacement dimensions, thereby changing the pressure and discharge of the plasticized material between the integrated mold sleeve and the mold core.

[0066] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model combines the structural dimensions of the original die heating module and die sleeve into one, achieving a new effect. The die sleeve functional area 101 effectively combines the two molds into one, effectively reducing the number of molds, improving dimensional tolerance accuracy, and enhancing the strength and stability of the mold during operation. This utility model uses a low-temperature extrusion stable and easily adjustable mold to replace the traditional die sleeve, die core, and eccentricity adjustment method on the market. It features simple installation and use, easy adjustment, and significantly reduces and mitigates eccentricity caused by the pressure applied to the die sleeve during material extrusion, effectively improving product quality, efficiently reducing eccentricity adjustment time during operation, and reducing the difficulty of eccentricity adjustment. Compared with eccentricity adjustment-free methods, the overall cost is reduced by 80%~95%. Compared with traditional die cores and die sleeves, the efficiency of eccentricity adjustment is increased by 2 times, and the difficulty is reduced by 2 times. The eccentricity problem caused by the pressure of the plastic material on the mold sleeve and mold core during operation can be 100% prevented. As long as the eccentricity of the mold sleeve and mold core is adjusted to a suitable position during the initial debugging stage after loading the mold and discharging the material, it will basically not change during subsequent operations and no secondary debugging is required. Attached Figure Description

[0067] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model; Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the integrated mold sleeve structure of the mold heating block according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the mold core structure according to an embodiment of the present utility model.

[0068] The diagram shows: 1. Integrated mold sleeve with mold heating block; 101. Mold sleeve functional area; 102. Mold heating module area; 2. Mold core; 3. Front cover plate screw; 4. Front cover plate; 5. Eccentric adjustment screw; 6. Diverter; 7. Machine head body; 8. Rear cover plate screw; 9. Rear cover plate; 10. Fastening module; 11. Mold core connecting rod front and rear displacement nut; 12. Mold core connecting rod. Detailed Implementation

[0069] The present invention will be further explained and described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0070] This utility model provides a stable and easily adjustable die for low-temperature extrusion, which is particularly suitable for adjusting the eccentricity of the die sleeve and die core during the low-temperature cable sheath extrusion process and avoiding eccentricity caused by the plasticizer squeezing the die sleeve and die core during the operation.

[0071] See Figure 1 A low-temperature extrusion stable and easily adjustable mold includes an integrated mold sleeve 1 with a mold heating block, a mold core 2, a front cover plate 4, an eccentric adjustment screw 5, a flow divider 6, a die head body 7, a rear cover plate 9, a fastening module 10, a front and rear displacement nut 11 for the mold core connecting rod, and a mold core connecting rod 12.

[0072] The front cover 4 is equipped with front cover screws 3, and the rear cover 9 is equipped with rear cover screws 8.

[0073] This embodiment employs a low-temperature extrusion stable and easily adjustable mold to replace the traditional mold sleeves and cores and the no-adjustment method for adjusting eccentricity. It features simple installation and use, easy adjustment, and significantly reduces and mitigates eccentricity caused by pressure applied to the mold sleeve during material extrusion, effectively improving product quality. It also significantly reduces the time and difficulty of eccentricity adjustment during manual operation. The overall cost is reduced by 80% to 95% compared to no-adjustment molds. Compared to traditional mold sleeves and cores, eccentricity adjustment efficiency is increased by 2 times, and the difficulty is reduced by 2 times. Eccentricity problems caused by the pressure of the plasticized material on the mold sleeve and core during operation can be 100% prevented. Once the eccentricity of the mold sleeve and core is adjusted to the appropriate position during the initial adjustment stage after mold loading and material discharge, it will remain largely unchanged during subsequent operations, eliminating the need for secondary adjustments.

[0074] Preferably, the integrated mold sleeve of the mold heating block is made of 45 steel, which has good comprehensive mechanical properties, moderate strength and hardness, and good toughness. Its total length is ≥75mm, which can effectively improve support and strength, and ensure that it does not deform during installation and high-temperature operation.

[0075] Preferably, the integrated mold sleeve with the mold heating block is made of 45# steel. This design combines the original structural dimensions of the mold heating module and the mold sleeve into one, achieving a new effect. The mold sleeve functional area and the mold heating module area effectively integrate the two molds into one, effectively reducing the number of molds, improving dimensional tolerance accuracy, enhancing mold strength and stability during operation. The mold sleeve thickness is ≥3mm, effectively ensuring strength and preventing deformation during installation and high-temperature operation.

[0076] Preferably, the mold core is made of 45 steel, which has good comprehensive mechanical properties, moderate strength and hardness, and good toughness. Its total length is ≥58mm and its nozzle length is ≥4mm, which effectively ensures strength and prevents deformation during installation and high-temperature operation. This size is convenient for adjusting the eccentricity and pressure state in accordance with the mold sleeve size.

[0077] Preferably, the front cover screws are made of 304 stainless steel, with an M10 socket head cap screw with a thread length of 50mm, and a quantity of 4 pieces. They are vertically distributed on the front of the front cover 4 in four directions (up, down, left, and right) to strengthen the fastening and facilitate internal insertion.

[0078] Preferably, the front cover is made of 304 stainless steel, with a length of 105mm, a width of 105mm, and a thickness of 32mm. It is made from a single piece of base material, resulting in extremely high strength and stability.

[0079] Preferably, the eccentric adjustment screws are made of 304 stainless steel, with an M10 thread length of 50mm, and are 4 pieces in number. They are vertically distributed on the four sides of the front cover plate in the four directions of up, down, left, and right, which can effectively adjust the eccentric position of the integrated heating block mold sleeve and mold core during the mold loading process and operation.

[0080] Preferably, the distributor is made of H13 mold steel, which can effectively divide the plastic material to ensure uniformity during plastic extrusion. It has high hardness and wear resistance, and the working temperature can reach -20~550℃.

[0081] Preferably, the main body of the machine head is made of H13 mold steel with a length ≥120mm, a width ≥120mm, and a height ≥150mm. It has stable support, high strength, high hardness and wear resistance, and can operate at temperatures from -20 to 550℃.

[0082] Preferably, the screws on the rear cover plate are made of 304 stainless steel, with an M10 socket head cap screw with a thread length of 50mm, and a quantity of 4 pieces. They are vertically distributed on the four sides of the rear cover plate 9 in the four directions of up, down, left, and right to strengthen the fastening and facilitate the insertion.

[0083] Preferably, the rear cover is made of 304 stainless steel, with a length of 105mm, a width of 105mm, and a thickness of 20mm. It is made from a single piece of base material, resulting in extremely high strength and stability.

[0084] Preferably, the fastening module is made of 304 stainless steel, with a diameter of 85mm and a thickness of 36mm. It is made from a single piece of base material, resulting in extremely high strength and stability.

[0085] Preferably, the front and rear displacement nut of the mold core connecting rod is made of 304 stainless steel. Its hexagonal nut has an outer diameter of 64mm, a threaded connection diameter of 44mm, and a total length of 56mm. It is made of a single piece of base material. By engaging with the mold core connecting rod through the thread, the front and rear displacement dimensions are adjusted, thereby changing the pressure and discharge of the plasticized material between the mold core and the mold heating block integrated mold sleeve.

[0086] Preferably, the mold core connecting rod is made of 304 stainless steel, with a diameter of 32mm and a length of 315mm. It is made from a single piece of base material and is connected to the mold core by threads, serving as a core wire guide. The threaded connection rod also adjusts the front and rear displacement dimensions, thereby changing the pressure and discharge of the plasticized material between the mold core and the mold heating block integrated mold sleeve.

[0087] Reference for the use of a low-temperature extrusion stable and easily adjustable mold Figure 1-4 First, the operator inserts the distributor 6 from the rear of the machine head body 7 using relevant auxiliary gloves, wrenches, and other tools. Then, it is fixed to the machine head body 7 by the rear cover plate 9 and rear cover plate screws 8. The mold core 2 and the mold core connecting rod 12 are fastened together by threaded connection. Then, it is inserted from the rear cover plate 9 to the specified position. The mold core connecting rod front and rear displacement nut 11 is fastened to the mold core connecting rod 12 by threaded connection to the appropriate position. The fastening module 10 is fastened to the mold core connecting rod front and rear displacement nut 11 by threaded connection. The mold heating block integrated mold sleeve 1 is pushed in from the head of the mold core 2 and is flush with the machine head body 7. Then, the mold heating block integrated mold sleeve 2 is fixed to the machine head body 7 by the front cover plate screws 4 and the front cover plate 5. Finally, the eccentric position of the mold heating module integrated mold sleeve 1 and the mold core 2 is adjusted by the eccentric adjustment screws 5 in the four directions of up, down, left, and right.

[0088] In this example, the mold sleeve functional area is 101, and the mold opening heating module area is 102.

[0089] This utility model provides a low-temperature extrusion stable and easily adjustable mold, replacing traditional mold sleeves and cores and non-adjustable mold adjustment methods. It features simple installation and use, easy adjustment, and significantly reduces and mitigates eccentricity caused by pressure on the mold sleeve during material extrusion, effectively improving product quality. It also significantly reduces the time and difficulty of eccentricity adjustment during manual operation. The overall cost is reduced by 80% to 95% compared to non-adjustable molds. Compared to traditional mold sleeves and cores, eccentricity adjustment efficiency is increased by 2 times, and the difficulty is reduced by 2 times. Eccentricity problems caused by the pressure of plasticized material on the mold sleeve and core during operation can be 100% prevented. Once the eccentricity of the mold sleeve and core is adjusted to the appropriate position during the initial adjustment stage after mold loading and material discharge, it will remain largely unchanged during subsequent operations, eliminating the need for secondary adjustments.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A low-temperature extrusion stable and easily adjustable mold, characterized in that, The assembly includes an integrated mold sleeve (1) with a mold heating block, a mold core (2), a front cover plate (4), an eccentric adjustment screw (5), a distributor (6), a machine head body (7), a rear cover plate (9), a fastening module (10), a mold core connecting rod front and rear displacement nut (11), and a mold core connecting rod (12). The distributor (6) is inserted from the rear of the machine head body (7) and fixed to the machine head body (7) by the rear cover plate (9) and the rear cover plate screw (8). The mold core (2) and the mold core connecting rod (12) are fastened together by threaded connection. The mold core is inserted from the rear cover plate (9) to a limited position. The mold core connecting rod front and rear displacement nut (11) and the mold core connecting rod (12) are fastened together by threaded connection to a suitable position. The fastening module (10) and the mold core connecting rod front and rear displacement nut (11) are fastened together by threaded connection.

2. The low-temperature extrusion stable and easily adjustable mold according to claim 1, characterized in that, The front cover plate (4) is equipped with front cover plate screws (3), and the rear cover plate (9) is equipped with rear cover plate screws (8). The integrated mold sleeve (1) of the mold heating block is pushed in by the head of the mold core (2) and is flush with the machine head body (7). The integrated mold sleeve (1) of the mold heating block is fixed on the machine head body (7) by the front cover plate screws (3) and the front cover plate (4). The eccentric position of the integrated mold sleeve (1) of the mold heating module and the mold core (2) is adjusted by the eccentric adjustment screws (5) in the four directions of up, down, left and right.

3. The low-temperature extrusion stable and easily adjustable mold according to claim 1, characterized in that, The integrated mold sleeve (1) with mold heating block is made of 45 steel and includes a mold sleeve functional area (101) and a mold heating module area (102). The total length is ≥75mm and the thickness of the mold sleeve is ≥3mm. The mold heating module area (102) is a thermocouple connection point, which is heated by threaded connection.

4. The low-temperature extrusion stable and easily adjustable mold according to claim 1, characterized in that, The mold core (2) is made of No. 45 steel and has a total length of ≥58mm and a nozzle length of ≥4mm.

5. A low-temperature extrusion stable and easily adjustable mold according to claim 2, characterized in that, The front cover plate (4) is made of 304 stainless steel, with a length of 105mm, a width of 105mm, and a thickness of 32mm. It is made of a single base material. The front cover plate screws (3) are made of 304 stainless steel, with an internal hexagonal M10 thread length of 50mm and a quantity of 4PCS. They are vertically distributed on the front of the front cover plate (4) in four directions (up, down, left, and right) to strengthen fastening and facilitate internal insertion.

6. The low-temperature extrusion stable and easily adjustable mold according to claim 1, characterized in that, The eccentric adjustment screw (5) is made of 304 stainless steel, with an M10 thread length of 50mm and a quantity of 4PCS. It is vertically distributed on the four sides of the front cover plate (4) in the four directions of up, down, left and right, and can effectively adjust the eccentric position of the integrated heating block mold sleeve (1) and mold core (2) during the mold loading process and operation.

7. The low-temperature extrusion stable and easily adjustable mold according to claim 1, characterized in that, The distributor (6) is made of H13 base material mold steel, which can effectively divide the plastic material to ensure uniformity during plastic extrusion. It has high hardness and wear resistance, and the working temperature can reach -20~550℃. The die head body (7) is made of H13 base material mold steel. Its length is ≥120mm, width is ≥120mm, and height is ≥150mm. It has stable support, high strength, high hardness and wear resistance, and the working temperature can reach -20~550℃.

8. A low-temperature extrusion stable and easily adjustable mold according to claim 1, characterized in that, The rear cover plate (9) is made of 304 stainless steel, with a length of 105mm, a width of 105mm, and a thickness of 20mm. It is made of a single base material. The rear cover plate is equipped with rear cover plate screws (8), which are made of 304 stainless steel, with an internal hexagonal M10 thread length of 50mm, and a quantity of 4 pieces. They are vertically distributed on the four sides of the rear cover plate (9) in the four directions of up, down, left, and right to strengthen the fastening and facilitate internal insertion.

9. A low-temperature extrusion stable and easily adjustable mold according to claim 1, characterized in that, The fastening module (10) is made of 304 stainless steel, with a diameter of 85mm and a thickness of 36mm. It is made of a single substrate and has extremely high strength and stability.

10. A low-temperature extrusion stable and easily adjustable mold according to claim 1, characterized in that, The core connecting rod front and rear displacement nut (11) is made of 304 stainless steel, with an outer diameter of 64mm, a threaded connection diameter of 44mm, and a total length of 56mm. It is made of a single base material. The core connecting rod (12) is made of 304 stainless steel, with a diameter of 32mm and a length of 315mm. It is made of a single base material. It is connected to the core (2) by threads and plays a core wire guiding role. The front and rear displacement size is adjusted by the thread connection with the core connecting rod (12), thereby changing the pressure and discharge of plastic material between the integrated mold sleeve (1) and the core (2).

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