Printing and feeding device for PET (Polyethylene Terephthalate) thermal shrinkage film

Abstract

The utility model discloses a PET thermal shrinkage film printing feeding device which comprises an operation table, a water storage tank is formed in the operation table, a water pump is fixedly connected to the position, located on one side of the water storage tank, in the operation table, a rotating pipe is rotationally connected to the position, located above the water storage tank, in the operation table, and a printing roller is fixedly connected to the outer side of the rotating pipe. One end of the rotating pipe is provided with a first rotating joint, the other end of the rotating pipe is provided with a second rotating joint, and the first rotating joint is communicated with the water storage tank through an input pipe. According to the printing feeding device for the PET thermal shrinkage film, a water pump can be started to pump cooling liquid in a water storage tank, the cooling liquid is injected into a rotating pipe through an output pipe, the cooling liquid in the rotating pipe enters the water storage tank through an input pipe for cooling, continuous cooling treatment can be conducted on a printing roller, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shrinkable film printing and feeding, in particular to a printing and feeding device for PET heat shrinkable film. Background Technique

[0002] PET heat shrinkable film is a new type of heat shrinkable packaging material. Due to its characteristics of being easy to recycle, non-toxic, odorless, good mechanical properties, especially meeting environmental protection requirements, in developed countries, polyester (PET) has become an ideal substitute for polyvinyl chloride (PVC) heat shrinkable film.

[0003] The existing utility model patent with the application number: CN202223138541.X proposed a printing and feeding device for plastic film with uniform feeding. Through the cooperation of a water tank, a first water pump, a second water pump, a U-shaped pipe, a cooling pipe, a semiconductor refrigerator, a temperature sensor, a drain pipe and a water inlet pipe, the utility model has the advantage of being able to cool the equipment, thereby dissipating heat, ensuring that the printing of the plastic film is not affected, and also improving the service life of the equipment.

[0004] When the device in the above patent cools the printing roller, the second valve is opened to introduce the coolant into the cooling pipe to cool the printing roller. After cooling the printing roller, the coolant in the inner cavity of the printing roller needs to be replaced. The replacement operation is cumbersome, and the printing roller cannot be continuously cooled during the coolant replacement, reducing the practicability of the device. Therefore, a printing and feeding device for PET heat shrinkable film is provided to solve the above problems. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a printing and feeding device for PET heat shrinkable film to solve the problems raised in the above background technique:

[0006] When the device cools the printing roller, the second valve is opened to introduce the coolant into the cooling pipe to cool the printing roller. After cooling the printing roller, the coolant in the inner cavity of the printing roller needs to be replaced. The replacement operation is cumbersome, and the printing roller cannot be continuously cooled during the coolant replacement, reducing the practicability of the device.

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0008] A printing and loading device for a PET heat shrinkable film, comprising an operating table. A water storage tank is provided inside the operating table. A water pump is fixedly connected inside the operating table and on one side of the water storage tank. A rotating pipe is rotatably connected inside the operating table and above the water storage tank. A printing roller is fixedly connected to the outside of the rotating pipe. A first rotary joint is installed at one end of the rotating pipe, and a second rotary joint is installed at the other end of the rotating pipe. The first rotary joint is communicated with the water storage tank through an input pipe. The water inlet of the water pump is communicated with the water storage tank through a pipeline, and the water outlet of the water pump is communicated with the second rotary joint through an output pipe. The rotating pipe drives the printing roller to rotate, facilitating the printing of the PET heat shrinkable film. When it is necessary to cool the printing roller, the water pump is started to extract the coolant inside the water storage tank and inject it into the inside of the rotating pipe through the output pipe. The coolant inside the rotating pipe enters the water storage tank through the input pipe for cooling, and continuous cooling treatment can be carried out on the printing roller.

[0009] Preferably, a second lifting plate and a first lifting plate are slidably connected inside the operating table. A first rotating shaft and a second rotating shaft are rotatably connected between the first lifting plate and the second lifting plate. A second rotating cylinder is fixedly connected to the outside of the first rotating shaft, and a first rotating cylinder is fixedly connected to the outside of the second rotating shaft. A servo motor is fixedly connected to one side of the first lifting plate, and the output end of the servo motor is fixedly connected to the second rotating shaft. The servo motor is started to drive the first rotating cylinder to rotate through the second rotating shaft, pulling out the unprinted PET heat shrinkable film from the second rotating cylinder. The rotation of the first rotating cylinder can wind up the printed PET heat shrinkable film.

[0010] Preferably, electric push rods are symmetrically arranged at the bottom of the first lifting plate and the bottom of the second lifting plate. The electric push rods are fixedly connected to the operating table. The electric push rods are started to push the second lifting plate and the first lifting plate to move upward until the plastic film contacts the printing roller.

[0011] Preferably, a semiconductor refrigerator is fixedly connected inside the operating table, and a temperature sensor is fixedly connected inside the water storage tank. When the temperature of the coolant in the water storage tank is too high, the temperature sensor senses the change in the coolant temperature and transmits the signal to the controller. The controller controls the semiconductor refrigerator to work, causing the coolant temperature to drop.

[0012] Preferably, a telescopic rod is fixedly connected inside the second lifting plate. One end of the telescopic rod is fixedly connected to a baffle plate. A telescopic spring is sleeved on the outside of the telescopic rod and on one side of the baffle plate. The baffle plate presses the first rotating shaft under the elastic force of the telescopic spring, which can prevent the PET heat shrinkable film from wrinkling during unwinding and affecting printing, achieving the effect of uniform feeding.

[0013] Preferably, a first rotating rod is rotatably connected inside the second lifting plate. A second rotating rod is slidably connected inside the first rotating rod. A first bevel gear is fixedly connected to the outer side of the second rotating shaft. A fourth bevel gear is fixedly connected to the bottom of the first rotating rod. The fourth bevel gear is meshed with the first bevel gear. A second bevel gear is fixedly connected to the top of the second rotating rod. A third rotating shaft is rotatably connected inside the operating table. A third bevel gear is fixedly connected to the outer side of the third rotating shaft. The third bevel gear is meshed with the second bevel gear. Pulley wheels are fixedly connected to the outer sides of both the third rotating shaft and the rotating pipe. The two pulley wheels are connected by a belt in transmission. The second rotating shaft drives the first bevel gear to rotate. Under the cooperation of the first bevel gear and the fourth bevel gear, the first rotating rod is driven to rotate. The first rotating rod drives the second bevel gear to rotate through the second rotating rod. Under the cooperation of the second bevel gear and the third bevel gear, the third rotating shaft is driven to rotate. The third rotating shaft drives the rotating pipe to rotate through the belt. The rotating pipe drives the printing roller to rotate, facilitating the printing of the PET heat shrinkable film.

[0014] The present utility model provides a printing and loading device for PET heat shrinkable film. Compared with the prior art, the following beneficial effects are achieved:

[0015] In the printing and loading device for PET heat shrinkable film, through the arrangements of the water pump, the rotating pipe and the water storage tank, the water pump can be started to extract the coolant inside the water storage tank and inject it into the inside of the rotating pipe through the output pipe. The coolant inside the rotating pipe enters the inside of the water storage tank through the input pipe for cooling, and can continuously cool the printing roller, improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural diagram of the present utility model;

[0017] Figure 2 is an internal three-dimensional structural diagram of the present utility model;

[0018] Figure 3 is a three-dimensional structural diagram of the semiconductor cooler in the present utility model;

[0019] Figure 4 is a three-dimensional structural diagram of the second lifting plate in the present utility model.

[0020] In the figure: 1. Operating table; 2. First lifting plate; 3. Servo motor; 4. Printing roller; 5. Second lifting plate; 6. First rotating cylinder; 7. Temperature sensor; 8. Water storage tank; 9. Water pump; 10. Electric push rod; 11. First rotating shaft; 12. Second rotating cylinder; 13. Rotating pipe; 14. Second rotating shaft; 15. Third rotating shaft; 16. Semiconductor refrigerator; 17. Telescopic spring; 18. Telescopic rod; 19. First rotating rod; 20. First bevel gear; 21. Second rotating rod; 22. Baffle; 23. Second bevel gear; 24. Third bevel gear; 25. Fourth bevel gear. Detailed implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 , the present invention provides a technical solution: a printing and loading device for PET heat shrinkable film, including an operating table 1. A water storage tank 8 is provided inside the operating table 1. A water pump 9 is fixedly connected inside the operating table 1 and on one side of the water storage tank 8. A rotating pipe 13 is rotatably connected above the water storage tank 8 inside the operating table 1. A printing roller 4 is fixedly connected to the outside of the rotating pipe 13. A first rotary joint is installed at one end of the rotating pipe 13, and a second rotary joint is installed at the other end of the rotating pipe 13. The first rotary joint is communicated with the water storage tank 8 through an input pipe. The water inlet of the water pump 9 is communicated with the water storage tank 8 through a pipeline, and the water outlet of the water pump 9 is communicated with the second rotary joint through an output pipe. The rotating pipe 13 drives the printing roller 4 to rotate, which is convenient for printing the PET heat shrinkable film. When it is necessary to cool the printing roller 4, start the water pump 9 to extract the coolant inside the water storage tank 8 and inject it into the inside of the rotating pipe 13 through the output pipe. The coolant inside the rotating pipe 13 enters the water storage tank 8 through the input pipe for cooling, and continuous cooling treatment can be carried out on the printing roller 4.

[0023] Further, a second lifting plate 5 and a first lifting plate 2 are slidably connected inside the operating table 1. A first rotating shaft 11 and a second rotating shaft 14 are rotatably connected between the first lifting plate 2 and the second lifting plate 5. A second rotating cylinder 12 is fixedly connected to the outside of the first rotating shaft 11, and a first rotating cylinder 6 is fixedly connected to the outside of the second rotating shaft 14. A servo motor 3 is fixedly connected to one side of the first lifting plate 2. The output end of the servo motor 3 is fixedly connected to the second rotating shaft 14. When the servo motor 3 is started, the first rotating cylinder 6 is driven to rotate by the second rotating shaft 14, and the unprinted PET heat shrinkable film is pulled out from the second rotating cylinder 12. The rotation of the first rotating cylinder 6 can wind up the printed PET heat shrinkable film.

[0024] Further, electric push rods 10 are symmetrically arranged at the bottoms of the first lifting plate 2 and the second lifting plate 5. The electric push rods 10 are fixedly connected to the operating table 1. When the electric push rods 10 are started, the second lifting plate 5 and the first lifting plate 2 are pushed to move upward until the plastic film contacts the printing roller 4.

[0025] Further, a semiconductor refrigerator 16 is fixedly connected inside the operating table 1, and a temperature sensor 7 is fixedly connected inside the water storage tank 8. When the temperature of the coolant in the water storage tank 8 is too high, the temperature sensor 7 senses the change in the coolant temperature and transmits the signal to the controller. The controller controls the semiconductor refrigerator 16 to work, so that the coolant temperature drops.

[0026] Further, a telescopic rod 18 is fixedly connected inside the second lifting plate 5. One end of the telescopic rod 18 is fixedly connected to a baffle 22. A telescopic spring 17 is sleeved on the outside of the telescopic rod 18 and on one side of the baffle 22. The baffle 22 presses the first rotating shaft 11 under the elastic force of the telescopic spring 17, which can prevent the PET heat shrinkable film from wrinkling during unwinding and affecting printing, and achieve the effect of uniform feeding.

[0027] Furthermore, a first rotating rod 19 is rotatably connected inside the second lifting plate 5. A second rotating rod 21 is slidably connected inside the first rotating rod 19. A first bevel gear 20 is fixedly connected to the outer side of the second rotating shaft 14. A fourth bevel gear 25 is fixedly connected to the bottom of the first rotating rod 19. The fourth bevel gear 25 is meshed with the first bevel gear 20. A second bevel gear 23 is fixedly connected to the top of the second rotating rod 21. A third rotating shaft 15 is rotatably connected inside the operating table 1. A third bevel gear 24 is fixedly connected to the outer side of the third rotating shaft 15. The third bevel gear 24 is meshed with the second bevel gear 23. Pulley wheels are fixedly connected to the outer sides of both the third rotating shaft 15 and the rotating tube 13. The two pulley wheels are connected by a belt in a transmission manner. The second rotating shaft 14 drives the first bevel gear 20 to rotate. Under the cooperation of the first bevel gear 20 and the fourth bevel gear 25, the first rotating rod 19 is driven to rotate. The first rotating rod 19 drives the second bevel gear 23 to rotate through the second rotating rod 21. Under the cooperation of the second bevel gear 23 and the third bevel gear 24, the third rotating shaft 15 is driven to rotate. The third rotating shaft 15 drives the rotating tube 13 to rotate through the belt. The rotating tube 13 drives the printing roller 4 to rotate, facilitating the printing of the PET heat shrinkable film.

[0028] During operation, the electric push rod 10 is started to push the second lifting plate 5 and the first lifting plate 2 to move upward until the plastic film contacts the printing roller 4. The servo motor 3 is started to drive the first rotating cylinder 6 to rotate through the second rotating shaft 14, and the unprinted PET heat shrinkable film is pulled out from the second rotating cylinder 12. The rotation of the first rotating cylinder 6 can wind up the printed PET heat shrinkable film. The baffle 22 presses the first rotating shaft 11 under the elastic force of the telescopic spring 17, which can prevent the PET heat shrinkable film from wrinkling during unwinding and affecting printing, achieving the effect of uniform feeding. The second rotating shaft 14 drives the first bevel gear 20 to rotate. Under the cooperation of the first bevel gear 20 and the fourth bevel gear 25, the first rotating rod 19 is driven to rotate. The first rotating rod 19 drives the second bevel gear 23 to rotate through the second rotating rod 21. Under the cooperation of the second bevel gear 23 and the third bevel gear 24, the third rotating shaft 15 is driven to rotate. The third rotating shaft 15 drives the rotating tube 13 to rotate through the belt. The rotating tube 13 drives the printing roller 4 to rotate, facilitating the printing of the PET heat shrinkable film. When it is necessary to cool down the printing roller 4, the water pump 9 is started to extract the coolant inside the water storage tank 8 and inject it into the inside of the rotating tube 13 through the output pipe. The coolant inside the rotating tube 13 enters the water storage tank 8 through the input pipe for cooling, enabling continuous cooling of the printing roller 4. When the temperature of the coolant in the water storage tank 8 is too high, the temperature sensor 7 senses the change in the coolant temperature and transmits the signal to the controller. The controller controls the semiconductor cooler 16 to work, causing the coolant temperature to drop, improving the practicality of the device.

[0029] Meanwhile, the content not described in detail in this specification belongs to the well-known prior art in the field of those skilled in the art.

[0030] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0031] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A printing and feeding device for a PET heat shrinkable film, comprising an operating table (1), characterized in that: A water storage tank (8) is provided inside the operating table (1), a water pump (9) is fixedly connected inside the operating table (1) and located on one side of the water storage tank (8), a rotating tube (13) is rotatably connected inside the operating table (1) and located above the water storage tank (8), a printing roller (4) is fixedly connected to the outer side of the rotating tube (13), a first rotating joint is installed at one end of the rotating tube (13), and a second rotating joint is installed at the other end of the rotating tube (13), the first rotating joint is connected to the water storage tank (8) through an input pipe, the water inlet of the water pump (9) is connected to the water storage tank (8) through a pipeline, and the water outlet of the water pump (9) is connected to the second rotating joint through an output pipe.

2. The printing and feeding device for a PET heat shrinkable film according to claim 1, characterized in that: The operating table (1) is internally slidably connected with a second lifting plate (5) and a first lifting plate (2); a first rotating shaft (11) and a second rotating shaft (14) are rotatably connected between the first lifting plate (2) and the second lifting plate (5); a second rotating drum (12) is fixedly connected to the outer side of the first rotating shaft (11); a first rotating drum (6) is fixedly connected to the outer side of the second rotating shaft (14); a servo motor (3) is fixedly connected to one side of the first lifting plate (2); and an output end of the servo motor (3) is fixedly connected to the second rotating shaft (14).

3. The printing and feeding device for a PET heat shrinkable film according to claim 2, characterized in that: Electric push rods (10) are symmetrically provided at the bottom of the first lifting plate (2) and the bottom of the second lifting plate (5), and the electric push rods (10) are fixedly connected to the operating table (1).

4. The printing and feeding device for a PET heat shrinkable film according to claim 1, characterized in that: A semiconductor refrigerator (16) is fixedly connected inside the operating table (1), and a temperature sensor (7) is fixedly connected inside the water storage tank (8).

5. The printing and feeding device for a PET heat shrinkable film according to claim 3, characterized in that: A telescopic rod (18) is fixedly connected inside the second lifting plate (5), one end of the telescopic rod (18) is fixedly connected to a baffle (22), and a telescopic spring (17) is sleeved on the outside of the telescopic rod (18) and located on one side of the baffle (22).

6. The printing and feeding device for a PET heat shrinkable film according to claim 5, characterized in that: The second lifting plate (5) is rotatably connected to a first rotating rod (19) inside, and the first rotating rod (19) is slidably connected to a second rotating rod (21) inside. The outer side of the second rotating shaft (14) is fixedly connected to a first bevel gear (20). The bottom of the first rotating rod (19) is fixedly connected to a fourth bevel gear (25), and the fourth bevel gear (25) is meshingly connected to the first bevel gear (20). The top of the second rotating rod (21) is fixedly connected to a second bevel gear (23). The inner side of the operating table (1) is rotatably connected to a third rotating shaft (15), and the outer side of the third rotating shaft (15) is fixedly connected to a third bevel gear (24), and the third bevel gear (24) is meshingly connected to the second bevel gear (23). The outer side of the third rotating shaft (15) and the outer side of the rotating tube (13) are both fixedly connected to pulleys, and the two pulleys are connected by belt transmission.

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