Stretching equipment with temperature control function for plastic product processing and temperature control method thereof
By combining the stable power and heating mechanism, the tension and temperature are controlled by servo motors and temperature sensors, the problem of unstable tension during the stretching of plastic film is solved, ensuring the stability of the stretching process and product quality.
Patent Information
- Application Number
- CN202510303048.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2025-07-25
AI Technical Summary
In the prior art, the tension of plastic films is unstable when stretched longitudinally or transversely, resulting in inconsistent stretching degree and affecting product quality.
The tensioning equipment with temperature control function is adopted, through the cooperation of the stabilizing power mechanism and the heating mechanism, the servo motor, threaded rod and temperature sensor are used to achieve stable control of tension and temperature, and the plastic film is fixed and guided in combination with the fixing mechanism to ensure the stability of the stretching process.
The tension and temperature control during the stretching of plastic film is achieved, which avoids inconsistent stretching degree and improves the quality and dimensional accuracy of the product.
Smart Images
Figure CN120363447A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of stretching equipment, and specifically relates to a stretching equipment for plastic product processing with a temperature control function and its temperature control method. Background Art
[0002] Plastic products are a general term for daily necessities, industrial products, etc. processed mainly with plastics. It includes products of all processes such as injection molding and thermoforming with plastics as raw materials. After the plastic products are produced, specimens need to be made for tensile testing, so a tensile testing machine is required.
[0003] In the prior art, when producing plastic films, the fluctuation of the tension will make the thickness of the film uneven. Because when the tension is unstable, the degree of longitudinal or transverse stretching of the plastic film is inconsistent. When the tension in an area is too large, it will be overstretched, making the film thinner; while in the area with too small tension, the stretching is insufficient and the film is relatively thicker, thus reducing the product quality. Now, a stretching equipment for plastic product processing with a temperature control function and its temperature control method are proposed. Summary of the Invention
[0004] The purpose of the present invention is to provide a stretching equipment for plastic product processing with a temperature control function and its temperature control method, so as to solve the problem mentioned in the above background art that when the tension is unstable, the degree of longitudinal or transverse stretching of the plastic film is inconsistent. When the tension in an area is too large, it will be overstretched, making the film thinner; while in the area with too small tension, the stretching is insufficient and the film is relatively thicker, thus reducing the product quality.
[0005] To achieve the above purpose, the present invention provides the following technical solution: A stretching equipment for plastic product processing with a temperature control function, including a support table, a stable power mechanism is arranged at the lower end of the support table, a stretching mechanism is arranged at the upper end of the support table, two groups of fixing mechanisms are arranged on one side of the stretching mechanism, and a heating mechanism is arranged above the support table; The stable power mechanism includes a guide seat and two groups of stable shaft blocks. A servo motor is fixedly installed at one end of the guide seat. A connecting seat is arranged at the lower end of the guide seat. Stable blocks are fixedly installed on both sides of the connecting seat. Guide plates are slidably installed inside the two groups of stable blocks. Limit plates are fixedly installed at both ends of the two groups of guide plates. A threaded rod is rotatably installed inside the guide seat. A threaded seat is threadedly connected to the outer wall of the threaded rod. Long holes are respectively opened through the upper end of the support table and near the positions of both side edges. The stretching mechanism includes two groups of support frames. At the inner bottom and top of the two groups of support frames, guide blocks are fixedly installed. In the middle of the two groups of support frames, vertical plates are fixedly installed. At one end of the two vertical plates, fixed seats are fixedly installed. Between the four guide blocks, two sliding seats are slidably installed. Between the two sliding seats, a first stretching roller is fixedly installed. Between the two fixed seats, a second stretching roller is fixedly installed. The two stabilizing shaft blocks are respectively slidably installed inside the two long holes. The protruding parts on both sides of the first stretching roller respectively penetrate through one side of the two sliding seats and are respectively fixedly installed inside the two stabilizing shaft blocks. The threaded seat is slidably installed inside the guide seat. One end of the threaded rod penetrates through one end of the guide seat and is fixed to the output end of the servo motor. One side of the two stabilizing shaft blocks is respectively fixed to one side of the two stabilizing blocks.
[0006] Preferably, a main control system is fixedly installed at one end of the support table. The heating mechanism includes two fixed frames. At one end of the two fixed frames, bearing seats are fixedly installed. Inside the two bearing seats, rotating shaft rods are rotatably installed. On one side of one of the fixed frames, a variable-speed motor is fixedly installed. Between the two rotating shaft rods, a heating roller is fixedly installed.
[0007] Preferably, the structures of the two fixing mechanisms are the same. The fixing mechanism includes a concave seat. Two telescopic rods are installed through one end of the concave seat. The protruding ends of the two telescopic rods are fixedly installed with semi-circular plates.
[0008] Preferably, two guide rails are fixedly installed at the lower end of the guide seat. On the outer walls of the two guide rails, two sliding seats are slidably installed. The upper end of the guide seat is fixed to the inner top of the support table. The lower ends of the two support frames are both fixed to the upper end of the support table.
[0009] Preferably, the lower ends of the four sliding seats are all fixed to the upper end of the connecting seat. The upper ends of the four limiting plates are all fixed to the inner top of the support table.
[0010] Preferably, at one end of the two bearing seats, fixing plates are fixedly installed. At one end of the two fixing plates, temperature sensors are fixedly installed.
[0011] Preferably, multiple anti-slip strips are fixedly installed on the inner wall of the semi-circular plate. The two protruding parts at one end of one of the concave seats are respectively fixed to one end of the two fixed seats. The two protruding parts at one end of the other concave seat are respectively fixed to one end of the two sliding seats.
[0012] Preferably, the output end of one set of the rotating shaft rods passes through one end of one set of bearing seats and is fixed to the output end of the variable-speed motor. The upper and lower ends of the two fixing frames are respectively fixed to the inner bottom end and the top end of the two support frames.
[0013] Preferably, a cover plate is fixedly installed at the upper ends of the two support frames. A cooling mechanism is fixedly installed at the upper end of the cover plate. The two temperature sensors are both in signal connection with the main control system. The cooling mechanism is in signal connection with the main control system. The controller in the heating roller is in signal connection with the main control system.
[0014] A temperature control method for a stretching device for plastic product processing with temperature control function includes the following steps: S1. Set the temperature preset value in advance through the main control system; S2. Then, through the real-time monitoring of the heating roller by the two temperature sensors, and the two temperature sensors transmit signals to the main control system in real time. The main control system will analyze and process the received signals and compare them with the preset temperature value; S3. When the actual temperature is lower than the preset temperature, the main control system will increase the power output of the controller in the heating roller. If the actual temperature is higher than the preset temperature, the heating power will be reduced.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, with the cooperation of the stable power mechanism and the stretching mechanism, the stable power mechanism can provide stable stretching tension for the stretching mechanism. Secondly, it can increase the stability of the movement of the two sliding seats, prevent the two sliding seats from shifting during movement, so that the stretching tension can be more stable, prevent inconsistent stretching degrees when stretching the plastic film, and prevent the reduction of product quality.
[0016] 2. In the present invention, with the cooperation of the main control system and the heating mechanism, by controlling the operation of the heating roller, heat is generated on its outer surface and transferred to the plastic film in contact with it, which is convenient for heating the plastic film. The two temperature sensors will monitor the temperature change on the surface of the heating roller and feedback the signals to the main control system for timely adjustment to keep the temperature stable. When the actual temperature on the surface of the heating roller is lower than the preset temperature, the main control system will increase the power transmission of the controller of the heating roller, and vice versa, reduce the power, so that the temperature can be accurately controlled and kept within a relatively stable range. At the same time, the preset temperature can be flexibly adjusted according to the processing requirements of different plastic products.
[0017] 3. In the present invention, by providing two sets of fixing mechanisms, one end of the plastic film can be limited to the outer wall of the second stretching roller, so as to fix one end of the plastic film. Then, by controlling the other set of fixing mechanisms, the other end of the plastic film can be fixed to the outer wall of the first stretching roller, thereby fixing both ends of the plastic film. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a perspective view of a stretching device for plastic product processing with temperature control function according to the present invention; Figure 2 is a schematic structural view of a stable power mechanism in a stretching device for plastic product processing with temperature control function according to the present invention; Figure 3 is a bottom view of a stable power mechanism in a stretching device for plastic product processing with temperature control function according to the present invention; Figure 4 is a schematic structural view of a stretching mechanism in a stretching device for plastic product processing with temperature control function according to the present invention; Figure 5 is a perspective view of a heating mechanism in a stretching device for plastic product processing with temperature control function according to the present invention; Figure 6 is a perspective view of a fixing mechanism in a stretching device for plastic product processing with temperature control function according to the present invention; Figure 7 is a bottom view of a stretching device for plastic product processing with temperature control function according to the present invention; Figure 8 is a system diagram of a stretching device for plastic product processing with temperature control function according to the present invention.
[0019] In the figure: 1. Support table; 11. Main control system; 12. Cover plate; 13. Cooling mechanism; 2. Stable power mechanism; 21. Guide seat; 22. Servo motor; 23. Connecting seat; 24. Stable block; 25. Stable shaft block; 26. Slide seat; 27. Limiting plate; 28. Guide plate; 29. Guide rail; 210. Threaded rod; 211. Threaded seat; 212. Long hole; 3. Stretching mechanism; 31. Support frame; 32. Guide block; 33. Vertical plate; 34. Fixed seat; 35. Sliding seat; 36. First stretching roller; 37. Second stretching roller; 4. Fixing mechanism; 41. Concave seat; 42. Expansion rod; 43. Semi-circular plate; 44. Anti-slip strip; 5. Heating mechanism; 51. Fixed frame; 52. Bearing seat; 53. Rotating shaft rod; 54. Variable speed motor; 55. Heating roller; 56. Fixed plate; 57. Temperature sensor. DETAILED DESCRIPTION OF THE INVENTION
[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0021] Embodiment 1: Refer to Figure 1-8 As shown in the figure: A stretching device for plastic product processing with a temperature control function includes a support table 1. A stable power mechanism 2 is arranged at the lower end of the support table 1. A stretching mechanism 3 is arranged at the upper end of the support table 1. Two groups of fixing mechanisms 4 are arranged on one side of the stretching mechanism 3. A heating mechanism 5 is arranged above the support table 1. The stable power mechanism 2 includes a guide seat 21 and two groups of stable shaft blocks 25. A servo motor 22 is fixedly installed at one end of the guide seat 21. A connecting seat 23 is arranged at the lower end of the guide seat 21. Stable blocks 24 are fixedly installed on both sides of the connecting seat 23. Guide plates 28 are slidably installed inside the two groups of stable blocks 24. Limit plates 27 are fixedly installed at both ends of the two groups of guide plates 28. A threaded rod 210 is rotatably installed inside the guide seat 21. A threaded seat 211 is threadedly connected to the outer wall of the threaded rod 210. Long holes 212 are respectively formed through the upper end of the support table 1 and near the positions of the two side edges. The stretching mechanism 3 includes two groups of support frames 31. Guide blocks 32 are fixedly installed at the bottom end and the top end inside the two groups of support frames 31. Vertical plates 33 are fixedly installed in the middle of the two groups of support frames 31. Fixed seats 34 are fixedly installed at one end of the two groups of vertical plates 33. Two groups of sliding seats 35 are slidably installed in the middle of the four groups of guide blocks 32. A first stretching roller 36 is fixedly installed in the middle of the two groups of sliding seats 35. A second stretching roller 37 is fixedly installed in the middle of the two groups of fixed seats 34. The two groups of stable shaft blocks 25 are respectively slidably installed inside the two long holes 212. The protruding parts on both sides of the first stretching roller 36 respectively penetrate through one side of the two groups of sliding seats 35 and are respectively fixedly installed inside the two groups of stable shaft blocks 25. The threaded seat 211 is slidably installed inside the guide seat 21. One end of the threaded rod 210 penetrates through one end of the guide seat 21 and is fixed to the output end of the servo motor 22. One side of the two groups of stable shaft blocks 25 is respectively fixed to one side of the two groups of stable blocks 24. Two groups of guide rails 29 are fixedly installed at the lower end of the guide seat 21. Two groups of sliding seats 26 are slidably installed on the outer walls of the two groups of guide rails 29. The upper end of the guide seat 21 is fixed to the inner top end of the support table 1. The lower ends of the two groups of support frames 31 are both fixed to the upper end of the support table 1. The lower ends of the four groups of sliding seats 26 are both fixed to the upper end of the connecting seat 23. The upper ends of the four groups of limit plates 27 are both fixed to the inner top end of the support table 1.
[0022] In this embodiment, by starting the servo motor 22, the output end of the servo motor 22 drives the threaded rod 210 to rotate inside the internal thread of the threaded seat 211, causing the threaded seat 211 to slide inside the guide seat 21. At the same time, the threaded seat 211 drives two sets of stabilizing blocks 24 to move together through the connecting seat 23. The two sets of stabilizing blocks 24 drive two sets of stabilizing shaft blocks 25 to slide inside two long holes 212, which can play a role in limiting and guiding the two sets of stabilizing shaft blocks 25, increasing the stability of the two sets of stabilizing shaft blocks 25 when moving. The two sets of stabilizing shaft blocks 25 drive the first stretching roller 36 to move together, and the first stretching roller 36 drives two sets of sliding seats 35 to slide on the outer walls of four sets of guide blocks 32. Furthermore, the stability of the two sets of sliding seats 35 when moving can be increased, preventing the two sets of sliding seats 35 from shifting during movement, so that the stretching tension can be more stable, preventing inconsistent stretching degrees when stretching the plastic film and preventing the reduction of product quality; With the sliding fit between two sets of stabilizing blocks 24 and two sets of guide plates 28, when the two sets of stabilizing blocks 24 move, the two sets of stabilizing blocks 24 will slide on the outer walls of the two sets of guide plates 28 respectively, which can play a role in guiding and limiting the two sets of stabilizing blocks 24, increasing the stability of the two sets of stabilizing blocks 24 when moving, and further improving the stability of tension adjustment; When the connecting seat 23 moves, the connecting seat 23 also drives four sets of sliding seats 26 to slide on the outer walls of two sets of guide rails 29, which can play a role in guiding and limiting the four sets of sliding seats 26 and improving the stability of the connecting seat 23 when moving.
[0023] Embodiment 2: As Figure 1 、 Figure 4 、 Figure 5 、 Figure 7 and Figure 8 shown, one end of the support table 1 is fixedly installed with a main control system 11. The heating mechanism 5 includes two sets of fixed frames 51. One end of each of the two sets of fixed frames 51 is fixedly installed with a bearing seat 52. A rotating shaft rod 53 is rotatably installed inside each of the two sets of bearing seats 52. A variable-speed motor 54 is fixedly installed on one side of one of the fixed frames 51. A heating roller 55 is fixedly installed in the middle of the two rotating shaft rods 53. One end of each of the two sets of bearing seats 52 is fixedly installed with a fixing plate 56. A temperature sensor 57 is fixedly installed at one end of each of the two fixing plates 56. The output end of one of the rotating shaft rods 53 passes through one end of one of the bearing seats 52 and is fixed to the output end of the variable-speed motor 54. The upper and lower ends of the two sets of fixed frames 51 are respectively fixed to the inner bottom end and the top end of the two sets of support frames 31. A cover plate 12 is fixedly installed at the upper end of the two sets of support frames 31. A cooling mechanism 13 is fixedly installed at the upper end of the cover plate 12. Both temperature sensors 57 are signal-connected to the main control system 11. The cooling mechanism 13 is signal-connected to the main control system 11. The controller in the heating roller 55 is signal-connected to the main control system 11.
[0024] In this embodiment, by controlling the operation of the heating roller 55, heat is generated on its outer surface and transferred to the plastic film in contact therewith, facilitating the heating of the plastic film. Temperature sensors 57 are installed at the lower ends of the two bearing seats 52, and the two temperature sensors 57 monitor the temperature change on the surface of the heating roller 55 and feedback the signals to the main control system 11 for timely adjustment to maintain a stable temperature. When the actual temperature on the surface of the heating roller 55 is lower than the preset temperature, the main control system 11 increases the power transmission of the controller of the heating roller 55; conversely, it decreases the power, so as to accurately control the temperature and keep the temperature within a relatively stable range. At the same time, the preset temperature can be flexibly adjusted according to the processing requirements of different plastic products; The setting of the cooling mechanism 13 enables the plastic products to cool down evenly during the cooling process, avoiding problems such as uneven shrinkage and deformation caused by local temperature differences, thereby improving the dimensional accuracy and appearance quality of the products.
[0025] Embodiment Three: As Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7 As shown in, the structures of the two fixing mechanisms 4 are the same. The fixing mechanism 4 includes a concave seat 41. Two telescopic rods 42 are installed through one end of the concave seat 41. The extending ends of the two telescopic rods 42 are fixedly installed with a semi-circular plate 43. A plurality of anti-slip strips 44 are fixedly installed on the inner wall of the semi-circular plate 43. The two protruding parts at one end of one of the concave seats 41 are respectively fixed to one end of the two fixed seats 34, and the two protruding parts at one end of the other concave seat 41 are respectively fixed to one end of the two sliding seats 35.
[0026] In this embodiment, by controlling the two fixing mechanisms 4 respectively, it is convenient for the two fixing mechanisms 4 to fix the two ends of the plastic film. Among them, by synchronously starting the two telescopic rods 42, the extending ends of the two telescopic rods 42 push the semi-circular plate 43 to move, and the semi-circular plate 43 drives a plurality of anti-slip strips 44 to move until the plurality of anti-slip strips 44 contact the outer wall of the plastic film, and then one end of the plastic film can be limited on the outer wall of the second stretching roller 37, so as to fix one end of the plastic film. Then, control the other fixing mechanism 4 to fix the other end of the plastic film on the outer wall of the first stretching roller 36, so as to fix the two ends of the plastic film; The setting of the plurality of anti-slip strips 44 can achieve an anti-slip effect, increase the friction force on the plastic film, and prevent one end of the plastic film from detaching from the outer wall of the second stretching roller 37.
[0027] A temperature control method for a stretching device for processing plastic products with a temperature control function includes the following steps: Step 1: Set the preset temperature value in advance through the main control system 11.
[0028] Step 2: Then, through the real-time monitoring of the heating roller 55 by two groups of temperature sensors 57, and the two groups of temperature sensors 57 transmit signals to the main control system 11 in real time. The main control system 11 will analyze and process the received signals and compare them with the preset temperature value.
[0029] Step 3: When the actual temperature is lower than the preset temperature, the main control system 11 will increase the power output of the controller in the heating roller 55. If the actual temperature is higher than the preset temperature, the heating power will be reduced.
[0030] The working principle of the present invention: First, during use, set the preset temperature value in advance through the main control system 11, and control the heating roller 55 to operate, so that heat is generated on its outer surface and transferred to the plastic film in contact therewith, facilitating the heating of the plastic film. By installing temperature sensors 57 at the lower ends of the two groups of bearing seats 52, the two groups of temperature sensors 57 will monitor the temperature change on the surface of the heating roller 55 and feedback the signals to the main control system 11 for timely adjustment to maintain temperature stability. When the actual temperature on the surface of the heating roller 55 is lower than the preset temperature, the main control system 11 will increase the power transmission of the controller of the heating roller 55. Conversely, the power will be reduced, which can accurately control the temperature and keep the temperature within a relatively stable range; Then, place one end of the plastic film on the surface of the second stretching roller 37, and then synchronously start the two groups of telescopic rods 42. The extending ends of the two groups of telescopic rods 42 push the semi-circular plate 43 to move, and the semi-circular plate 43 drives the multi-group anti-slip strips 44 to move until the multi-group anti-slip strips 44 contact the outer wall of the plastic film, so that one end of the plastic film can be limited on the outer wall of the second stretching roller 37, and one end of the plastic film can be fixed. Then, place the other end of the plastic film on the surface of the first stretching roller 36, and control the other fixing mechanism 4 to fix the other end of the plastic film on the outer wall of the first stretching roller 36; Finally, start the servo motor 22. The output end of the servo motor 22 drives the threaded rod 210 to rotate within the internal thread of the threaded seat 211, causing the threaded seat 211 to slide within the guide seat 21. At the same time, the threaded seat 211 drives two sets of stabilizing blocks 24 to move together through the connecting seat 23. The two sets of stabilizing blocks 24 drive two sets of stabilizing shaft blocks 25 to slide within the two long holes 212, and the two sets of stabilizing shaft blocks 25 drive the first stretching roller 36 to move together. The first stretching roller 36 drives the other end of the plastic film to move and stretches it. At the same time, the first stretching roller 36 drives two sets of sliding seats 35 to slide on the outer walls of the four guide blocks 32, thereby increasing the stability of the movement of the two sets of sliding seats 35, preventing the two sets of sliding seats 35 from shifting during movement, enabling the stretching tension to be more stable, preventing inconsistent stretching degrees when stretching the plastic film, and preventing the product quality from being reduced.
[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A stretching device for plastic product processing with temperature control function, including a support table (1), characterized in that: A stable power mechanism (2) is provided at the lower end of the support table (1), a stretching mechanism (3) is provided at the upper end of the support table (1), two groups of fixing mechanisms (4) are provided on one side of the stretching mechanism (3), and a heating mechanism (5) is provided above the support table (1). The stable power mechanism (2) includes a guide seat (21) and two groups of stable shaft blocks (25). A servo motor (22) is fixedly installed at one end of the guide seat (21). A connecting seat (23) is provided at the lower end of the guide seat (21). Stable blocks (24) are fixedly installed on both sides of the connecting seat (23). Guide plates (28) are slidably installed inside the two groups of stable blocks (24). Limit plates (27) are fixedly installed at both ends of the two groups of guide plates (28). A threaded rod (210) is rotatably installed inside the guide seat (21). A threaded seat (211) is threadedly connected to the outer wall of the threaded rod (210). Long holes (212) are respectively formed through the upper end of the support table (1) and near the positions of the two side edges. The stretching mechanism (3) includes two groups of support frames (31). Guide blocks (32) are fixedly installed at the bottom end and the top end inside the two groups of support frames (31). Vertical plates (33) are fixedly installed in the middle of the two groups of support frames (31). Fixed seats (34) are fixedly installed at one end of the two groups of vertical plates (33). Two sliding seats (35) are slidably installed in the middle of the four groups of guide blocks (32). A first stretching roller (36) is fixedly installed in the middle of the two sliding seats (35). A second stretching roller (37) is fixedly installed in the middle of the two fixed seats (34). The two groups of stable shaft blocks (25) are respectively slidably installed inside the two long holes (212). The protruding parts on both sides of the first stretching roller (36) respectively penetrate through one side of the two sliding seats (35) and are respectively fixedly installed inside the two groups of stable shaft blocks (25). The threaded seat (211) is slidably installed inside the guide seat (21). One end of the threaded rod (210) penetrates through one end of the guide seat (21) and is fixed to the output end of the servo motor (22). One side of the two groups of stable shaft blocks (25) is respectively fixed to one side of the two groups of stable blocks (24).
2. The stretching device for plastic product processing with a temperature control function according to claim 1, wherein: A main control system (11) is fixedly installed at one end of the support table (1). The heating mechanism (5) includes two groups of fixing frames (51). Bearing seats (52) are fixedly installed at one end of the two groups of fixing frames (51). Rotating shaft rods (53) are rotatably installed inside the two groups of bearing seats (52). A variable-speed motor (54) is fixedly installed on one side of one of the fixing frames (51). A heating roller (55) is fixedly installed in the middle of the two rotating shaft rods (53).
3. The stretching device for plastic product processing with temperature control function according to claim 1, characterized in that: The structures of the two groups of fixing mechanisms (4) are the same. The fixing mechanism (4) includes a concave seat (41). Two groups of telescopic rods (42) are installed through one end of the concave seat (41). Semi-circular plates (43) are fixedly installed at the extending ends of the two groups of telescopic rods (42).
4. A stretching device for plastic product processing with a temperature control function according to claim 1, characterized in that: Two sets of guide rails (29) are fixedly installed at the lower end of the guide seat (21). Two sets of sliding seats (26) are slidably installed on the outer walls of the two sets of guide rails (29). The upper end of the guide seat (21) is fixed to the inner top of the support table (1). The lower ends of the two sets of support frames (31) are both fixed to the upper end of the support table (1).
5. A stretching device for plastic product processing with a temperature control function according to claim 4, characterized in that: The lower ends of the four sets of sliding seats (26) are all fixed to the upper end of the connecting seat (23). The upper ends of the four sets of limiting plates (27) are all fixed to the inner top of the support table (1).
6. The stretching device for plastic product processing with temperature control function according to claim 2, characterized in that: One end of each of the two sets of bearing seats (52) is fixedly installed with a fixing plate (56). One end of each of the two sets of fixing plates (56) is fixedly installed with a temperature sensor (57).
7. The stretching device for plastic product processing with temperature control function according to claim 3, characterized in that: A plurality of anti-slip strips (44) are fixedly installed on the inner wall of the semi-circular plate (43). Two protruding parts at one end of one set of concave seats (41) are respectively fixed to one end of the two sets of fixed seats (34). Two protruding parts at one end of the other set of concave seats (41) are respectively fixed to one end of the two sets of sliding seats (35).
8. A stretching device for plastic product processing with a temperature control function according to claim 6, characterized in that: The output end of one set of rotating shaft rods (53) passes through one end of one set of bearing seats (52) and is fixed to the output end of the variable-speed motor (54). The upper and lower ends of the two sets of fixing frames (51) are respectively fixed to the inner bottom end and the top end of the two sets of support frames (31).
9. The stretching device for plastic product processing with temperature control function according to claim 8, characterized in that: The upper ends of the two sets of support frames (31) are fixedly installed with a cover plate (12). A cooling mechanism (13) is fixedly installed on the upper end of the cover plate (12). The two sets of temperature sensors (57) are both signal-connected to the main control system (11). The cooling mechanism (13) is signal-connected to the main control system (11). The controller in the heating roller (55) is signal-connected to the main control system (11).
10. A temperature control method for a stretching device used in the processing of plastic products with a temperature control function, characterized in that, When using a stretching device for plastic product processing with a temperature control function described in any one of the above claims 1-9, the following steps are included: S1. Set the temperature preset value in advance through the main control system (11). S2. Then, through the real-time monitoring of the heating roller (55) by the two sets of temperature sensors (57), and the two sets of temperature sensors (57) transmit signals to the main control system (11) in real time. The main control system (11) will analyze and process the received signals and compare them with the preset temperature value. S3. When the actual temperature is lower than the preset temperature, the main control system (11) will increase the power output of the controller in the heating roller (55). If the actual temperature is higher than the preset temperature, the heating power will be reduced.