Self-adaptive extruder extrusion pipe positioning device capable of expanding with heat and contracting with cold

Abstract

The utility model discloses a self-adaptive extruder extrusion pipe positioning device capable of expanding with heat and contracting with cold. The self-adaptive extruder extrusion pipe positioning device comprises an extruder body, a bracket, a movable supporting mechanism and a suspension displacement supporting mechanism, the middle of the extrusion pipe is connected with the support through a movable supporting mechanism, and the extrusion head is fixed to the support through a suspension displacement supporting mechanism. The movable supporting mechanism and the suspension displacement supporting mechanism work cooperatively, the thermal expansion and cold contraction effect of the extrusion pipe and the extrusion head can be accurately compensated in the same direction, and the positioning deviation problem caused by the high-temperature environment is effectively avoided. Compared with a single supporting structure in the prior art, according to the design, automatic displacement adjustment is achieved through the sliding mechanism, high precision and stability of the extrusion process are ensured, the operation efficiency and product quality of equipment are remarkably improved, and the service life of the equipment is remarkably prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to an extrusion tube positioning device for an extruder capable of self-adapting to thermal expansion and contraction. Background Art

[0002] Extruders are widely used in the extrusion molding process for materials such as plastics and rubber. Their core components, including the extrusion tube and extrusion head, are responsible for extruding and molding the high-temperature molten material. In actual production, because the extrusion tube and extrusion head are exposed to high temperatures for a long time, they inevitably expand and contract due to temperature fluctuations. If this dimensional change cannot be effectively controlled, it can lead to misalignment of the extrusion tube and extrusion head, affecting extrusion accuracy, resulting in poor product quality and equipment failure. This problem is particularly serious on production lines that require high precision.

[0003] In the existing technology, a fixed bracket is usually used to support the extrusion tube and extrusion head to maintain their working stability. However, this fixed bracket structure has significant limitations when facing thermal expansion and contraction, mainly manifested in the following aspects:

[0004] 1. Unable to automatically compensate for displacement caused by thermal expansion and contraction. The existing fixed bracket lacks adaptive adjustment function, resulting in ineffective compensation for the deformation of the extrusion tube and extrusion head caused by temperature changes. This in turn causes positioning deviation during equipment operation, affecting product quality.

[0005] 2. Mechanical stress concentration and severe equipment wear. Due to the rigid structure of the fixed bracket, when the extrusion tube or extrusion head moves due to thermal expansion and contraction, the relevant parts of the equipment will be subjected to greater mechanical stress, resulting in increased equipment wear, shortening the service life of the equipment and increasing maintenance costs.

[0006] 3. Frequent maintenance requirements affect production efficiency. To cope with the effects of thermal expansion and contraction, existing technologies often require manual adjustments or component replacements to maintain normal operation of equipment. This not only increases operational complexity but also significantly affects production efficiency. Especially in continuous production conditions, frequent maintenance shutdowns can significantly reduce production line capacity.

[0007] To solve the above problems, the industry has also tried to use flexible materials or elastic structures to support the extrusion tube and extrusion head to reduce the impact of thermal expansion and contraction. However, this approach has also exposed new problems in actual applications. First, flexible materials or elastic structures are difficult to maintain their elastic properties for a long time in a high-temperature environment, which can easily lead to structural fatigue and failure, and cannot effectively resist the effects of thermal expansion and contraction. Secondly, it is difficult for such materials to ensure the precise positioning of the extrusion tube and extrusion head in high-precision production lines, which may still lead to unstable product quality.

[0008] Therefore, how to automatically compensate for the thermal expansion and contraction effects and ensure the precise positioning of the extrusion equipment has become a technical problem to be solved by the present utility model. Utility Model Content

[0009] The technical problem solved by the present invention is to address the defects existing in the above-mentioned prior art and provide an extruder extrusion tube positioning device with adaptive thermal expansion and contraction to solve the problems of positioning deviation and equipment wear caused by thermal expansion and contraction of the extruder proposed in the above-mentioned background technology.

[0010] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0011] An extruder extrusion tube positioning device capable of adaptive thermal expansion and contraction, comprising an extruder body, the extruder body containing an extrusion tube, the extruder extrusion tube positioning device capable of adaptive thermal expansion and contraction further comprising a bracket, a movable support mechanism, and a suspension displacement support mechanism;

[0012] The middle portion of the extrusion tube is connected to a movable support bracket by at least one movable support mechanism;

[0013] The mobile support mechanism includes a support member and a first sliding mechanism, the first sliding mechanism includes a first slide rail and a first pulley that slides with the first slide rail; the number of the first sliding mechanisms is two, and the first slide rails of the first sliding mechanism are fixedly arranged on the bracket;

[0014] The top of the support member is fixedly connected to the extrusion tube, and the bottom of the support member is fixedly connected to the first pulley;

[0015] The extrusion tube includes an extrusion head arranged at the extrusion end of the extrusion tube, and the extrusion head is arranged on the bracket through a suspension displacement support mechanism;

[0016] The suspension displacement support mechanism comprises a transverse suspension rod, a second sliding mechanism and a vertical suspension rod;

[0017] The lower side of the transverse boom is connected to the bracket in a sliding manner via two second sliding mechanisms;

[0018] One end and the other end of the horizontal boom are respectively fixedly connected to the top end of the vertical boom, and the bottom ends of the vertical boom are respectively fixedly connected to the foundation head.

[0019] As a further solution of the present invention, the second sliding mechanism includes a second slide rail and a second pulley. The second slide rail is fixedly arranged on the bracket. The second pulley is slidably connected to the second slide rail, and the second pulley is fixedly connected to the transverse boom.

[0020] As a further solution of the present invention, two second sliding mechanisms are respectively located on the lower side of the transverse boom and close to one end and the other end of the transverse boom.

[0021] As a further solution of the present invention, the adaptive thermal expansion and contraction extruder extrusion tube positioning device also includes a base frame, and the bracket is fixedly arranged on the base frame.

[0022] As a further solution of the present invention, the transverse suspension rod is a hollow rod body with a rectangular end cross-section.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. Automatic compensation for thermal expansion and contraction to improve extrusion precision: In existing technologies, the displacement of the extrusion tube and extrusion head due to thermal expansion and contraction cannot be effectively compensated, which in turn affects the precision and stability of the extrusion process. However, the present utility model, through the ingenious combination of a mobile support mechanism and a suspended displacement support mechanism, realizes automatic displacement adjustment of the extrusion tube and extrusion head in high-temperature working environments, accurately compensates for the effects of thermal expansion and contraction, significantly improves the positioning accuracy of the equipment during operation, and ensures the continuity and efficiency of the extrusion process.

[0025] 2. Through the organic combination of the mobile support mechanism and the suspension displacement support mechanism, more accurate displacement compensation and adjustment are achieved in the same direction. Specifically, the mobile support mechanism is responsible for the horizontal movement of the extrusion tube, while the suspension displacement support mechanism supports and adjusts the displacement of the extrusion head through the cooperation of the horizontal hanger and the vertical hanger. This design effectively alleviates the possible displacement of the extrusion tube and the extrusion head during thermal expansion and contraction, so that the two key components can be continuously and stably supported and positioned on the same axis. Compared with the single support structure in the prior art, the support and suspension structures of the present invention achieve synergy in the same direction, which not only improves the stability of the extrusion equipment, but also ensures the positioning accuracy during long-term work, and prevents equipment offset and performance instability due to temperature fluctuations.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 It is a structural diagram of the present utility model.

[0029] Figure 2 for Figure 1 A magnified schematic diagram of part A.

[0030] Figure 3 for Figure 1 An enlarged schematic diagram of part B.

[0031] The reference numerals and names in the figures are as follows:

[0032] Extruder body 1, extrusion tube 2, bracket 3, support member 4, first sliding mechanism 5, first slide rail 6, first pulley 7, extrusion head 8, horizontal boom 9, second sliding mechanism 10, vertical boom 11, second slide rail 12, second pulley 13 and base frame 14. DETAILED DESCRIPTION

[0033] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figure 1 —3. In an embodiment of the present invention, an adaptive thermal expansion and contraction positioning device for an extruder extrusion tube includes an extruder body 1, the extruder body 1 includes an extrusion tube 2, and the adaptive thermal expansion and contraction positioning device for an extruder extrusion tube further includes a bracket 3, a movable support mechanism, and a suspension displacement support mechanism;

[0035] The middle portion of the extrusion tube 2 is connected to a movable support bracket 3 by at least one movable support mechanism;

[0036] The mobile support mechanism includes a support member 4 and a first sliding mechanism 5. The first sliding mechanism 5 includes a first slide rail 6 and a first pulley 7 that slides with the first slide rail 6. There are two first sliding mechanisms 5, and the first slide rail 6 of the first sliding mechanism 5 is fixedly arranged on the bracket 3. Through the sliding matching structure, it can have radial extension and synchronous movement during thermal expansion and contraction, and return to its original position during contraction, so as to achieve a better matching use effect.

[0037] The top of the support member 4 is fixedly connected to the extrusion tube 2, and the bottom of the support member 4 is fixedly connected to the first pulley 7; wherein the support member 4 can be a connecting plate, and can be fixedly connected to the extrusion tube 2 by means of a bolt locking band through multiple plates, which are all extended implementation methods known to ordinary technicians in this field. The extrusion tube 2 includes an extrusion head 8 arranged at the extrusion end of the extrusion tube 2, and the extrusion head 8 is arranged on the bracket 3 through a suspension displacement support mechanism; the suspension displacement support mechanism includes a transverse hanger 9, a second sliding mechanism 10 and a vertical hanger 11; the lower side of the transverse hanger 9 is slidably connected to the bracket 3 through two second sliding mechanisms 10; one end and the other end of the transverse hanger 9 are respectively fixedly connected to the top of the vertical hanger 11, and the bottom end of the vertical hanger 11 is respectively fixedly connected to the base head. The second sliding mechanism 10 includes a second slide rail 12 and a second pulley 13, the second slide rail 12 is fixedly arranged on the bracket 3, the second pulley 13 is slidably connected to the second slide rail 12, and the second pulley 13 is fixedly connected to the transverse hanger 9.

[0038] Two second sliding mechanisms 10 are located on the underside of the transverse suspension rod 9, near one end and the other end. The adaptive thermal expansion and contraction extruder tube positioning device also includes a base frame 14, to which the bracket 3 is fixedly mounted. The transverse suspension rod 9 is a hollow rod with a rectangular end cross-section.

[0039] Example 1:

[0040] In a plastic pipe production line, the extruder is a key piece of equipment, responsible for shaping the high-temperature molten plastic material into the desired pipe through the extrusion tube 2 and extrusion head 8. The extrusion tube 2 and extrusion head 8 of the extruder must withstand high temperatures during operation, and this high-temperature environment inevitably causes the extrusion tube 2 and extrusion head 8 to expand and contract due to thermal expansion and contraction. Due to this thermal expansion and contraction effect, if the extrusion tube 2 or extrusion head 8 experiences displacement deviation, the dimensional accuracy of the plastic pipe will be affected, directly leading to a decline in product quality. Therefore, ensuring the precise positioning of the extrusion tube 2 and extrusion head 8 under high-temperature conditions has become a crucial task in this production line.

[0041] This embodiment provides an extruder extrusion tube positioning device that is adaptive to thermal expansion and contraction and is used in a plastic pipe extrusion production line. It mainly solves the problems of inaccurate positioning and increased equipment wear of existing extruders in high-temperature working environments by combining a mobile support mechanism and a suspended displacement support mechanism.

[0042] In practice, the extruder body 1 is installed at a key location in a plastic pipe production line, with its extruded pipe 2 secured to a bracket 3 via a movable support mechanism comprised of two sliding structures. Specifically, the first sliding mechanism 5 comprises a first slide rail 6 and a first pulley 7. The middle portion of the extruded pipe 2 is connected to the first pulley 7 via a fixed support member 4, enabling horizontal movement of the extruded pipe 2 along the first slide rail 6 even under high-temperature conditions. As the extruded pipe 2 expands and contracts due to thermal expansion and contraction at high temperatures, the movable support mechanism automatically adjusts its position to compensate for dimensional changes caused by temperature fluctuations, ensuring that the extruded pipe 2 remains in the ideal position on the production line.

[0043] The extrusion head 8 is located at the end of the extrusion tube 2 and is fixed to the bracket 3 by a suspension displacement support mechanism. The suspension displacement support mechanism works together through a transverse hanger 9 and a vertical hanger 11. A second sliding mechanism 10 is provided below the transverse hanger 9, which includes a second slide rail 12 and a second pulley 13, so that the extrusion head 8 can move horizontally along the slide rail of the transverse hanger 9, while the vertical hanger 11 is used to vertically support the extrusion head 8. This suspension displacement support mechanism design ensures that the extrusion head 8 can be freely adjusted within the range of the extrusion tube 2 under high temperature conditions, automatically compensates for the displacement of the extrusion head 8 caused by thermal expansion and contraction, and avoids production deviations caused by misaligned positioning.

[0044] In the actual production process, when the thermal expansion and contraction effect caused by high temperature occurs on the extrusion tube 2 and the extrusion head 8, the mobile support mechanism and the suspension displacement support mechanism can function simultaneously and adjust in the horizontal and vertical directions respectively. This adjustment process does not require manual intervention and relies on the automatic displacement compensation of the slide rail and the pulley to ensure that the extrusion tube 2 and the extrusion head 8 can maintain precise positioning even under high temperature conditions. This adaptive adjustment method greatly improves the operating stability and extrusion accuracy of the extruder, and avoids equipment wear and production errors caused by thermal expansion and contraction. The application of this embodiment not only improves the overall efficiency of the production line and reduces the frequent maintenance needs, but also significantly reduces the production costs caused by equipment wear and positioning deviations. In addition, the produced pipes have been significantly improved in dimensional accuracy and quality consistency, solving the problem that the traditional fixed bracket 3 structure is difficult to cope with the problem of thermal expansion and contraction under high temperature conditions, and truly achieving efficient and stable production goals.

[0045] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. An adaptive thermal expansion and contraction extruder extrusion tube positioning device, comprising an extruder body, the extruder body including an extrusion tube, characterized in that: The adaptive thermal expansion and contraction extruder extrusion tube positioning device also includes a bracket, a mobile support mechanism and a suspension displacement support mechanism; The middle portion of the extrusion tube is connected to a movable support bracket by at least one movable support mechanism; The mobile support mechanism includes a support member and a first sliding mechanism, the first sliding mechanism includes a first slide rail and a first pulley that slides with the first slide rail; the number of the first sliding mechanisms is two, and the first slide rails of the first sliding mechanism are fixedly arranged on the bracket; The top of the support member is fixedly connected to the extrusion tube, and the bottom of the support member is fixedly connected to the first pulley; The extrusion tube includes an extrusion head arranged at the extrusion end of the extrusion tube, and the extrusion head is arranged on the bracket through a suspension displacement support mechanism; The suspension displacement support mechanism comprises a transverse suspension rod, a second sliding mechanism and a vertical suspension rod; The lower side of the transverse boom is connected to the bracket in a sliding manner via two second sliding mechanisms; One end and the other end of the horizontal boom are respectively fixedly connected to the top end of the vertical boom, and the bottom ends of the vertical boom are respectively fixedly connected to the foundation head.

2. The adaptive thermal expansion and contraction extrusion tube positioning device for an extruder according to claim 1, characterized in that: The second sliding mechanism includes a second slide rail and a second pulley. The second slide rail is fixedly arranged on the bracket. The second pulley is slidably connected to the second slide rail. The second pulley is fixedly connected to the transverse boom.

3. The self-adaptive thermal expansion and contraction extrusion tube positioning device for an extruder according to claim 1, characterized in that: Two second sliding mechanisms are respectively located on the lower side of the transverse boom and close to one end and the other end of the transverse boom.

4. The self-adaptive thermal expansion and contraction extrusion tube positioning device for an extruder according to claim 1, characterized in that: The self-adaptive thermal expansion and contraction extruder extrusion tube positioning device further comprises a base frame, and the bracket is fixedly arranged on the base frame.

5. The self-adaptive thermal expansion and contraction extrusion tube positioning device for an extruder according to claim 1, characterized in that: The transverse hanger is a hollow rod with a rectangular end section.

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