An improved plastic profile straightness adjustment device

Abstract

This utility model relates to the field of plastic profile production technology, specifically an improved plastic profile straightness adjustment device. It includes a mounting base plate with several mounting holes on its surface. A longitudinal guide rail is fixedly mounted on the top of the mounting base plate using high-strength bolts. A transverse guide rail is slidably mounted on the outer wall of the longitudinal guide rail, and a slider is slidably mounted on the outer wall of the transverse guide rail. A fixing platform is connected to the outer wall of the slider away from the transverse guide rail via adjusting bolts. This utility model achieves universal and precise bending and straightening of various plastic profiles through the horizontal and vertical adjustment of the transverse and longitudinal guide rails, combined with the multi-angle rotation of the hot air plate and hot air heating. This greatly improves production flexibility and product quality. Simultaneously, its simple structure significantly expands the applicability of the target profiles and enhances the efficiency of mold switching for the production team.

Description

Technical Field

[0001] This utility model relates to the field of plastic profile production technology, specifically to an improved plastic profile straightness adjustment device. Background Technology

[0002] A plastic extrusion production line is an automated system that continuously produces plastic materials with fixed cross-sections (such as pipes and profiles) by heating and melting plastic raw materials and forcing them through a mold of a specific shape. During this process, uneven cooling and shrinkage of different parts of the profile cross-section can generate internal stress, causing the product to bend. Therefore, an online bending adjustment device must be installed in the shaping and cooling zone at the end of the production line to adjust the stress distribution and correct the deformation through real-time local heating, ensuring that the flatness of the final product meets the quality standards.

[0003] Currently, the two known hot air bending devices are: First, fixed to the sizing table of the plastic profile extrusion equipment, which cannot move up, down, left, or right. Different profiles have different heating zones, and even for the same type of plastic profile, the heating zone changes depending on the extrusion direction. This requires manufacturing a separate hot air bending device for each situation. Second, fixed to a circular guide rail, this only allows for changing the position on the guide rail, making it inconvenient to adjust different blowing angles and distances, and it is not suitable for different profiles. Therefore, we propose an improved plastic profile straightness adjustment device. Utility Model Content

[0004] The purpose of this invention is to solve the problem that hot air bending devices are not universally applicable, and to provide an improved plastic profile straightness adjustment device.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An improved plastic profile straightness adjustment device includes a mounting base plate with several mounting holes on its surface. A longitudinal guide rail is fixedly mounted on the top of the mounting base plate by high-strength bolts. A transverse guide rail is slidably mounted on the outer wall of the longitudinal guide rail. A slider is slidably mounted on the outer wall of the transverse guide rail. A fixing platform is sleeved on the outer wall of the slider away from the transverse guide rail by adjusting bolts. A hot air plate is fixedly mounted on the top of the fixing platform. An adjustable air nozzle is provided on the surface of the hot air plate. A 90-degree elbow is threadedly connected to the end of the hot air plate away from the transverse guide rail by a locking nut. A hot air gun fixing seat is threadedly connected to the top of the 90-degree elbow for introducing hot air and heating a local area of ​​the profile to adjust the stress distribution of the profile cross-section and improve its straightness.

[0007] Preferably, both the transverse and longitudinal guide rails are provided with waist-shaped grooves, and the transverse guide rail is fixed to the longitudinal guide rail by a star-shaped handle screw, thereby realizing vertical position adjustment.

[0008] Preferably, the slider is fixed to the transverse or longitudinal guide rail by an M set screw to achieve horizontal sliding and positioning.

[0009] Preferably, the hot air plate can rotate and move radially relative to the fixed platform to continuously adjust the blowing angle and blowing distance; the adjustable nozzle can adjust the hot air jet range and direction according to the profile cross-sectional shape.

[0010] Preferably, the longitudinal and transverse guide rails are made of high-strength aluminum alloy and have a wear-resistant coating on their surfaces.

[0011] Preferably, the mounting holes on the mounting base plate are arranged to match the mounting interface of the standard shaping table.

[0012] By employing the above technical solution, this utility model provides an improved plastic profile straightness adjustment device. Its beneficial effects are: this utility model, through the horizontal and vertical adjustment of the transverse guide rails and longitudinal guide rails, coupled with the multi-angle rotation of the hot air plate and hot air heating, achieves universal and precise bending and straightening of various plastic profiles, greatly improving production flexibility and product quality. At the same time, its simple structure significantly expands the applicability of the target profiles and enhances the efficiency of mold switching for the production team. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0014] Figure 1 This is a front view schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a right-side view of the overall structure of this utility model;

[0016] Figure 3 A three-view diagram of the mounting base plate;

[0017] Figure 4 This is a three-view schematic diagram of the longitudinal guide rail;

[0018] Figure 5 This is a three-view schematic diagram of the horizontal guide rail;

[0019] Figure 6 These are front and right view diagrams of the slider;

[0020] Figure 7 This is a front view of the hot air plate;

[0021] Figure 8 This is a right-side view of the hot air panel;

[0022] Figure 9 This is a schematic diagram of the motion trajectory of the hot air plate relative to the slider;

[0023] Figure 10 A frontal view of the profile with vertical top surface heating;

[0024] Figure 11 A frontal view of the profile with vertical bottom heating;

[0025] Figure 12 A frontal view of the profile being heated horizontally on the side.

[0026] In the diagram: 1. Mounting base plate; 2. Longitudinal guide rail; 3. Transverse guide rail; 4. Slider; 51. Adjusting bolt; 52. Fixing platform; 53. Hot air plate; 54. Adjustable nozzle; 6. Locking nut; 7. 90-degree elbow; 8. Hot air gun mounting base; 9. Star-shaped handle screw. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] An improved plastic profile straightness adjustment device, such as Figures 1-9 As shown, the system includes a mounting base plate 1 with several mounting holes on its surface. A longitudinal guide rail 2 is fixedly mounted on the top of the mounting base plate 1 by high-strength bolts. A transverse guide rail 3 is slidably mounted on the outer wall of the longitudinal guide rail 2. A slider 4 is slidably mounted on the outer wall of the transverse guide rail 3. A fixed platform 52 is sleeved on the outer wall of the slider 4 away from the transverse guide rail 3 by adjusting bolts 51. A hot air plate 53 is fixedly mounted on the top of the fixed platform 52. An adjustable air nozzle 54 is provided on the surface of the hot air plate 53. A 90-degree elbow 7 is threadedly connected to the end of the hot air plate 53 away from the transverse guide rail 3 by locking nut 6. A hot air gun mounting base 8 is threadedly connected to the top of the 90-degree elbow 7.

[0030] Both the transverse guide rail 3 and the longitudinal guide rail 2 are provided with waist-shaped grooves, and the transverse guide rail 3 is fixed to the longitudinal guide rail 2 by means of a star-shaped handle screw 9, so as to realize the vertical position adjustment.

[0031] The slider 4 is fixed to the horizontal guide rail 3 or the vertical guide rail 2 by an M8 set screw, so as to achieve horizontal sliding and positioning.

[0032] The hot air plate 53 can rotate and move radially relative to the fixed platform 52 to continuously adjust the blowing angle and blowing distance; the adjustable nozzle 54 can adjust the hot air jet range and direction according to the profile cross-sectional shape.

[0033] The longitudinal guide rail 2 and the transverse guide rail 3 are made of high-strength aluminum alloy and have a wear-resistant coating on the surface.

[0034] The mounting holes on the mounting base plate 1 are arranged to match the mounting interface of the standard forming table.

[0035] In use, this improved plastic profile straightness adjustment device is installed at the tail end of the forming table of the plastic profile extrusion production line. The profile passes back and forth from the center of the front of the adjustment device (e.g., ...). Figures 10-12 As shown), in the working state, first select the placement position of the air blower plate according to the required air blowing and heating position of the profile. When the profile is in the initial cooling but not yet fully shaped stage, the operator first finely adjusts the position and angle of the hot air plate 53 according to the cross-sectional shape, size and actual bending condition of the plastic profile to be produced. Loosen the star handle screw 9 so that the horizontal guide rail 3 can slide in the vertical direction along the longitudinal guide rail 2, thereby driving the entire air blowing system to rise and fall. After adjusting the hot air plate 53 to a height that is roughly level with the target heating area of ​​the profile, tighten the star handle screw 9 again to fix it.

[0036] Loosen the M8 set screw used to fix the slider 4 so that the slider 4 can slide along the transverse guide rail 3 in the horizontal direction, thereby accurately adjusting the transverse distance between the blower and the profile. After positioning is completed, tighten the M8 set screw again to fix it.

[0037] Finally, by rotating and radially moving the hot air plate 53 itself, the outlet of its adjustable nozzle 54 can be directed towards the specific part of the profile that needs to be heated. This operation can continuously adjust the blowing angle and blowing distance to ensure that the hot air can act accurately and concentratedly on the target area. After adjustment, it is finally fixed by adjusting the bolt 51 and locking the nut 6.

[0038] After positioning, the external hot air gun is connected to the hot air gun mounting base 8. The hot air flows sequentially through the 90-degree elbow 7 and the internal channel of the hot air plate 53, finally exiting from the adjustable nozzle 54. The high-temperature airflow acts on a specific area of ​​the moving plastic profile, causing its temperature to rise and releasing and redistributing internal stress. During the subsequent cooling process, the difference in cooling shrinkage rate between the heated area and other areas decreases, effectively correcting the bending deformation caused by uneven cooling and ensuring the straightness of the finished profile. Through the combination of a multi-degree-of-freedom adjustment mechanism and online hot air heating, universal and precise bending correction of various plastic profiles is achieved, greatly improving production flexibility and product quality. At the same time, the simple structure greatly expands the applicability of the target profile and improves the efficiency of mold switching for the production team.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An improved plastic profile straightness adjustment device, comprising a mounting base plate (1), wherein the surface of the mounting base plate (1) is provided with a plurality of mounting holes, characterized in that: The top of the mounting base plate (1) is fixedly mounted with a longitudinal guide rail (2) by high-strength bolts. A transverse guide rail (3) is slidably mounted on the outer wall of the longitudinal guide rail (2). A slider (4) is slidably mounted on the outer wall of the transverse guide rail (3). A fixed platform (52) is sleeved on the outer wall of the slider (4) away from the transverse guide rail (3) by adjusting bolts (51). A hot air plate (53) is fixedly mounted on the top of the fixed platform (52). An adjustable air nozzle (54) is provided on the surface of the hot air plate (53). A ninety-degree elbow (7) is threadedly connected to the end of the hot air plate (53) away from the transverse guide rail (3) by locking nut (6). A hot air gun fixing seat (8) is threadedly connected to the top of the ninety-degree elbow (7).

2. The improved plastic profile straightness adjustment device according to claim 1, characterized in that: Both the transverse guide rail (3) and the longitudinal guide rail (2) are provided with waist-shaped grooves, and the transverse guide rail (3) is fixed by the cooperation of the waist-shaped groove of the longitudinal guide rail (2) with the star-shaped handle screw (9) to realize the vertical position adjustment.

3. The improved plastic profile straightness adjustment device according to claim 2, characterized in that: The slider (4) is fixed to the transverse guide rail (3) or the longitudinal guide rail (2) by an M8 set screw, so as to achieve horizontal sliding and positioning.

4. The improved plastic profile straightness adjustment device according to claim 3, characterized in that: The hot air plate (53) can rotate and move radially relative to the fixed platform (52) to continuously adjust the blowing angle and blowing distance; the adjustable nozzle (54) can adjust the hot air jet range and direction according to the profile cross-sectional shape.

5. The improved plastic profile straightness adjustment device according to claim 4, characterized in that: The longitudinal guide rail (2) and the transverse guide rail (3) are made of high-strength aluminum alloy and have a wear-resistant coating on their surfaces.

6. The improved plastic profile straightness adjustment device according to claim 5, characterized in that: The mounting holes on the mounting base plate (1) are arranged to match the mounting interface of the standard shaping table.

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