A PET sheet flatness shaping device

Abstract

The utility model discloses a kind of PET sheet flatness's shaping device, including shaping device;The shaping device is composed of box and shaping mechanism, the box bottom end is equipped with supporting leg, the box upper end is equipped with finishing door, multiple the shaping mechanism is installed side by side in box interior, the thickness of multiple the shaping mechanism self-feeding port to discharge port direction shaping material sequentially decreases, tension adjusting mechanism is installed between the box interior between shaping mechanism, tension adjusting wheel is installed between the tension adjusting mechanism, the box interior upper end is rotatably installed with guide wheel in the position close to discharge port position. Different shaping mechanism of the utility model has different shaping width, and the shaping demand of a variety of width PET sheet can be adapted, when sheet passes through corresponding width shaping mechanism, directly by tension adjusting wheel traction to guide wheel and complete guide.

Description

Technical Field

[0001] This utility model relates to the field of PET sheet shaping technology, specifically a shaping device for the flatness of PET sheets. Background Technology

[0002] PET sheet flatness shaping refers to the process of correcting unevenness defects such as warping, wavy lines, wrinkles, and localized protrusions / depressions that occur during the production, processing, or storage of PET (polyethylene terephthalate) sheets using specific technologies or equipment. The goal is to achieve a uniform, flat surface that meets the requirements of subsequent processing (such as printing, lamination, die-cutting, and thermoforming) or applications. Its core objective is to eliminate morphological deviations caused by uneven internal stress or external factors, thereby improving the dimensional stability and surface quality of the sheet.

[0003] Chinese Patent No. 202223238693.7 discloses a shaping device for improving the flatness of PET sheets, belonging to the field of preparation and application technology of novel functional polymer materials. It includes a shaping machine, a PET sheet release roll, a PET sheet pre-leveling component, a PET sheet flattening table, and a PET sheet shaping unit. The PET sheet release roll is provided with a PET sheet roll. The PET sheet pre-leveling component is located between the PET sheet release roll and the PET sheet flattening table. The PET sheet shaping unit is arranged on the shaping machine, and the PET sheet is provided on the PET sheet flattening table. The PET sheet shaping unit can contact the PET sheet on the PET sheet flattening table.

[0004] During shaping, the tension cannot be adjusted, which easily leads to wrinkles in the material and poor flatness. At the same time, it is impossible to flatten materials of different widths during the flattening process. Summary of the Invention

[0005] The purpose of this invention is to provide a shaping device for the flatness of PET sheets, so as to solve the problems mentioned in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a shaping device for the flatness of PET sheets, comprising a shaping device; the shaping device consists of a box and shaping mechanisms, the bottom of the box is equipped with support legs, the top of the box is equipped with a trimming door, multiple shaping mechanisms are installed side by side inside the box, the thickness of the material shaped by the multiple shaping mechanisms decreases sequentially from the inlet to the outlet, a tension adjusting mechanism is installed inside the box between the shaping mechanisms, tension adjusting wheels are installed between the tension adjusting mechanisms, and a guide wheel is rotatably installed at the upper part of the box near the outlet.

[0007] Preferably, a handle is installed on the upper end of one side of the repair door, and the two sides of the repair door are slidably installed inside the slide groove, which is located at both ends of the upper side of the box body.

[0008] Preferably, the shaping mechanism consists of a power mechanism, a constant temperature electric heating roller, and a gear. The two constant temperature electric heating rollers are rotatably installed inside the housing. The gear is installed at one end of the constant temperature electric heating roller, which extends out of the outer end of the housing. The other end of one of the constant temperature electric heating rollers extends out of the housing and is installed at the front end of the power mechanism. The power mechanism is installed on the outside of the housing.

[0009] Preferably, the power mechanism consists of an electric motor and a transmission, with the transmission mounted on the outside of the housing and the electric motor mounted on one side of the transmission.

[0010] Preferably, the tension adjustment mechanism consists of a slider, a guide rod, a mounting groove, and a spring. The mounting groove is installed on both sides inside the housing, the guide rod is installed in the middle inside the mounting groove, the slider is slidably installed on the upper side of the guide rod, the spring is installed inside the mounting groove on the outer side of the guide rod below the slider, and the tension adjustment wheel is rotatably installed between the sliders.

[0011] Preferably, the tension adjustment mechanism further includes a damping sleeve, which is installed inside the slider and is slidably connected to the guide rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. During the shaping process, the PET sheet will generate stretching tension due to extrusion. The tension adjustment mechanism installed between the shaping mechanisms can adjust the sheet tension in real time through the tension adjustment wheel to avoid excessive or insufficient tension causing the sheet to tilt and ensure shaping accuracy. Different shaping mechanisms have different shaping widths to adapt to the shaping needs of PET sheets of various widths. After the sheet passes through the shaping mechanism of the corresponding width, it is directly pulled by the tension adjustment wheel to the guide wheel to complete the exit. 2. When it is necessary to inspect, maintain or clean the shaping mechanism, tension adjustment mechanism and other components inside the box, the operator can hold the handle at the upper end of one side of the repair door and slide the repair door along the slide grooves set at both ends of the upper side of the box to open and close the repair door. The slide grooves provide a stable sliding track for the repair door, ensuring that its opening and closing process is smooth and making it convenient for the operator to operate the inside of the device. 3. The power mechanism provides power for the entire shaping process. It drives one of the thermostatically heated rollers to rotate. A gear on one end of this roller, extending outside the housing, meshes with the corresponding gear on the other thermostatically heated roller, causing both rollers to rotate synchronously in opposite directions. When the PET sheet to be shaped passes between the two rotating rollers, it is subjected to both the squeezing action of the rollers and the heat from the heating rollers, softening the sheet. Under the combined action of heat and mechanical force, the flatness of the PET sheet is improved. The power mechanism is installed on the outside of the housing, saving internal space and facilitating maintenance of the power components. The thermostatically heated roller consists of a roller body, heating elements, a temperature control system, and an insulation layer. After power is connected, the heating elements generate heat, raising the surface temperature of the roller. A temperature sensor monitors the roller temperature in real time and feeds the data back to the controller. When the temperature reaches the set value, the controller automatically cuts off the heating power; when the temperature falls below the set value, the controller automatically turns the heating power back on, thus achieving constant temperature control. 4. When the PET sheet experiences tension changes during the shaping process, the tension adjusting wheel is subjected to the tension of the sheet. The tension adjusting wheel is installed between the sliders, which can slide up and down along the guide rod inside the mounting groove. When the sheet tension increases, it pulls the tension adjusting wheel upward, causing the slider to compress the spring located below the slider on the outside of the guide rod. When the tension decreases, the elastic restoring force of the spring pushes the slider downward, causing the tension adjusting wheel to move downward, thereby applying appropriate tension to the sheet. Through the elastic expansion and contraction of the spring, the tension of the PET sheet is automatically adjusted to maintain tension stability. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the internal structure of the present invention; Figure 3 This is a schematic diagram of the shaping mechanism of this utility model; Figure 4 This is a schematic diagram of the tension adjustment mechanism of this utility model.

[0014] In the diagram: 1. Shaping device; 2. Box body; 3. Repair door; 4. Slide rail; 5. Handle; 6. Shaping mechanism; 7. Guide wheel; 8. Power mechanism; 9. Tension adjustment mechanism; 10. Electric motor; 11. Gearbox; 12. Constant temperature electric heating roller; 13. Gear; 14. Support leg; 15. Tension adjustment wheel; 16. Damping sleeve; 17. Slider; 18. Guide rod; 19. Spring; 20. Mounting slot. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 In this embodiment of the utility model, a shaping device for the flatness of PET sheet includes a shaping device 1; the shaping device 1 consists of a box 2 and a shaping mechanism 6. A support leg 14 is installed at the bottom of the box 2, and a repair door 3 is installed at the top of the box 2. Multiple shaping mechanisms 6 are installed side by side inside the box 2. The thickness of the material shaped by the multiple shaping mechanisms 6 decreases sequentially from the feed port to the discharge port. A tension adjusting mechanism 9 is installed inside the box 2 between the shaping mechanisms 6, and a tension adjusting wheel 15 is installed between the tension adjusting mechanisms 9. A guide wheel 7 is rotatably installed at the upper part of the box 2 near the discharge port.

[0017] Furthermore, a handle 5 is installed on the upper end of one side of the repair door 3, and the two sides of the repair door 3 are slidably installed inside the slide groove 4, which is located at both ends of the upper side of the housing 2. When it is necessary to inspect, maintain, or clean the shaping mechanism 6, tension adjustment mechanism 9, and other components inside the housing 2, the operator can hold the handle 5 on the upper end of one side of the repair door 3 to make the repair door 3 slide along the slide groove 4 located at both ends of the upper side of the housing 2, thereby realizing the opening and closing of the repair door 3. The slide groove 4 provides a stable sliding track for the repair door 3, ensuring smooth opening and closing and facilitating the operator's operation of the inside of the device.

[0018] The shaping mechanism 6 consists of a power mechanism 8, a constant temperature electric heating roller 12, and a gear 13. Two constant temperature electric heating rollers 12 are rotatably installed inside the housing 2. The gear 13 is installed on one end of the constant temperature electric heating roller 12, which extends out of the outer end of the housing 2. The other end of one of the constant temperature electric heating rollers 12 extends out of the housing 2 and is installed at the front end of the power mechanism 8. The power mechanism 8 is installed on the outside of the housing 2. The power mechanism 8 provides power for the entire shaping process. By driving one of the constant temperature electric heating rollers 12 to rotate, the gear 13 of one end of the roller extending out of the outer side of the housing 2 meshes with the corresponding gear 13 of the other constant temperature electric heating roller 12, thereby driving the two constant temperature electric heating rollers 12 to rotate synchronously in opposite directions. When the PET sheet to be shaped passes between the two rotating constant temperature electric heating rollers 12, it is subjected to the squeezing action of the rollers on the one hand, and the heat of the constant temperature electric heating rollers 12 is used to heat and soften the sheet on the other hand. Under the combined action of heat and mechanical force, the flatness of the PET sheet is improved. The power mechanism 8 is installed on the outside of the housing 2, which saves internal space and facilitates the maintenance of the power components.

[0019] The power mechanism 8 consists of an electric motor 10 and a gearbox 11. The gearbox 11 is mounted on the outside of the housing 2, and the electric motor 10 is mounted on one side of the gearbox 11. The electric motor 10 provides initial power as a power source, and its output speed is adjusted by the gearbox 11 to adapt to the shaping needs of PET sheets of different thicknesses and materials. The gearbox 11 converts the power of the electric motor 10 into speed and torque, and then transmits it to the constant temperature electric heating roller 12 connected to it, ensuring that the roller rotates at a suitable speed and providing stable power output for the shaping of PET sheets.

[0020] The tension adjustment mechanism 9 consists of a slider 17, a guide rod 18, a mounting groove 20, and a spring 19. The mounting groove 20 is installed on both sides inside the housing 2. The guide rod 18 is installed in the middle inside the mounting groove 20. The slider 17 is slidably installed on the upper side of the guide rod 18. The spring 19 is installed inside the mounting groove 20, on the outer side of the guide rod 18, and located below the slider 17. The tension adjustment wheel 15 is rotatably installed between the sliders 17. When the PET sheet experiences tension changes during the forming process, the tension adjusting wheel 15 is subjected to the tension of the sheet. The tension adjusting wheel 15 is installed between sliders 17, which can slide up and down along the guide rod 18 inside the mounting groove 20. When the sheet tension increases, it pulls the tension adjusting wheel 15 upward, causing the slider 17 to compress the spring 19 located below the slider 17 on the outside of the guide rod 18. When the tension decreases, the elastic restoring force of the spring 19 pushes the slider 17 downward, causing the tension adjusting wheel 15 to move downward, thereby applying appropriate tension to the sheet. Through the elastic extension and contraction of the spring 19, the tension of the PET sheet is automatically adjusted to maintain tension stability.

[0021] Furthermore, the tension adjustment mechanism 9 also includes a damping sleeve 16, which is installed inside the slider 17 and slidably connected to the guide rod 18. When the slider 17 slides up and down along the guide rod 18, a certain frictional force is generated between the damping sleeve 16 and the guide rod 18. This frictional force can slow down the sliding speed of the slider 17, preventing rapid movement of the slider 17 due to sudden changes in sheet tension. This makes the tension adjustment process smoother, further ensuring the stability of the PET sheet during the shaping process and improving the shaping quality.

[0022] The working principle and usage process of this utility model: The box 2 serves as the supporting frame for the entire device, and is stably placed by the bottom support legs 14. During operation, the PET sheet to be shaped enters the box 2 through the feed inlet and passes through multiple shaping mechanisms 6 installed side by side. Since the shaping thickness of these shaping mechanisms 6 is set to decrease sequentially from the feed inlet to the discharge outlet, a stepped extrusion shaping effect is formed, allowing the PET sheet to gradually reach a flat state under the gradually decreasing thickness limit. During the shaping process, the PET sheet will generate extensibility tension due to extrusion. The tension adjustment mechanism 9 installed between the shaping mechanisms 6 can adjust the sheet tension in real time through the tension adjustment wheel 15 to avoid excessive or insufficient tension causing the sheet to tilt, thus ensuring shaping accuracy. Finally, the shaped PET sheet is guided by the guide wheel 7 located at the upper end of the box 2 near the discharge outlet and smoothly discharged from the discharge outlet. At the same time, different shaping mechanisms 6 have different shaping widths, which can adapt to PET sheets of various widths. For sheet forming, after the sheet passes through the forming mechanism 6 of the corresponding width, it is directly pulled by the tension adjusting wheel 15 to the guide wheel 7 to complete the export.

[0023] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A PET sheet flatness shaping device, comprising a shaping device (1); characterized in that: The shaping device (1) consists of a box (2) and a shaping mechanism (6). The bottom of the box (2) is equipped with a support leg (14), and the top of the box (2) is equipped with a repair door (3). Multiple shaping mechanisms (6) are installed side by side inside the box (2). The thickness of the material is gradually reduced from the feed port to the discharge port. Tension adjustment mechanism (9) is installed between the shaping mechanisms (6) inside the box (2). Tension adjustment wheel (15) is installed between the tension adjustment mechanisms (9). Guide wheel (7) is rotatably installed at the upper part of the box (2) near the discharge port.

2. The PET sheet flatness shaping device according to claim 1, characterized in that: A handle (5) is installed on the upper side of one side of the repair door (3), and the two sides of the repair door (3) are slidably installed inside the slide groove (4), which is located at both ends of the upper side of the box body (2).

3. The PET sheet flatness shaping device according to claim 1, characterized in that: The shaping mechanism (6) consists of a power mechanism (8), a constant temperature electric heating roller (12), and a gear (13). The two constant temperature electric heating rollers (12) are rotatably installed inside the housing (2). The gear (13) is installed on one end of the constant temperature electric heating roller (12) extending out of the outer end of the housing (2). The other end of one of the constant temperature electric heating rollers (12) extends out of the housing (2) and is installed at the front end of the power mechanism (8). The power mechanism (8) is installed on the outside of the housing (2).

4. The PET sheet flatness shaping device according to claim 3, characterized in that: The power mechanism (8) consists of an electric motor (10) and a transmission (11). The transmission (11) is installed on the outside of the housing (2), and the electric motor (10) is installed on one side of the transmission (11).

5. The PET sheet flatness shaping device according to claim 1, characterized in that: The tension adjustment mechanism (9) consists of a slider (17), a guide rod (18), a mounting groove (20), and a spring (19). The mounting groove (20) is installed on both sides inside the housing (2). The guide rod (18) is installed in the middle inside the mounting groove (20). The slider (17) is slidably installed on the upper side of the guide rod (18). The spring (19) is installed inside the mounting groove (20) on the outside of the guide rod (18) below the slider (17). The tension adjustment wheel (15) is rotatably installed between the sliders (17).

6. The PET sheet flatness shaping device according to claim 5, characterized in that: The tension adjustment mechanism (9) also includes a damping sleeve (16), which is installed inside the slider (17) and is slidably connected to the guide rod (18).

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