Water-soluble PVA cast film production device

Abstract

The invention relates to the technical field of cast film production, in particular to a water-soluble PVA cast film production device which comprises a moving belt set, one end of the moving belt set is fixedly connected with a motor, an output shaft of the motor is fixedly connected with a transmission belt set in a sleeved mode, and one end of the transmission belt set is fixedly connected with a rotating shaft. A connecting block is movably clamped to the middle of the rotating shaft, one end of the connecting block is fixedly connected with a printing roller, the printing roller is a cam roller, and the connecting block is polygonal. Compared with the prior art, when the casting film is embossed through the embossing roller, downward extrusion is conducted, the pressure during embossing is increased, the embossing definition is improved, the needed definition can be obtained through one-time embossing, and the problem that embossing is fuzzy due to the fact that the embossing positions are difficult to completely overlap during multiple times of embossing is solved.

Description

Technical Field

[0001] The invention relates to the technical field of cast film production, in particular to a water-soluble PVA cast film production device. Background Art

[0002] Polyvinyl alcohol (PVA) film has high water absorption, can dissolve when immersed in water, can pass water vapor, but has difficulty in passing alcohol vapor, let alone organic solvent vapor, inert gas and hydrogen. The barrier property of polyvinyl alcohol film is even better than that of vinylidene chloride film. The application of PVA is based on the solution method, and the film material is prepared by cast film forming.

[0003] In the prior art, a Chinese patent with announcement number CN215039549U proposes a water-soluble PVA cast film production device, which provides a water-soluble PVA cast film production device with simple structure, easy operation and improved film quality through a mechanical structure. However, in actual application, there is still a problem that when the cast film needs to be printed on the surface during production, a printing roller is mostly used. However, the existing printing roller is cylindrical, and the pressing force is small when the cast film is printed by rolling. The method of using multiple printing rollers for repeated embossing to increase the embossing clarity is prone to the problem that the embossing positions of multiple printing rollers cannot be completely overlapped, so there is a problem that the printing is not clear or blurred. Therefore, we disclose a water-soluble PVA cast film production device. Summary of the invention

[0004] The purpose of the present invention is to provide a water-soluble PVA cast film production device to solve the problem of unclear printing of the cast film.

[0005] Based on the above purpose, the present invention provides a water-soluble PVA cast film production device, including a moving belt group, one end of the moving belt group is fixedly connected to a motor, the output shaft of the motor is fixedly sleeved with a transmission belt group, one end of the transmission belt group is fixedly connected to a rotating shaft, the middle part of the rotating shaft is movably connected with a connecting block, one end of the connecting block is fixedly connected to a printing roller, the printing roller is a cam roller, and the connecting block is a polygon.

[0006] Preferably, the output shaft of the motor is fixedly connected to the moving belt group, and both ends of the moving belt group are rotatably connected to a fixing frame arranged on the ground.

[0007] Preferably, the other end of the transmission belt group is fixedly connected to a turntable, one end of the turntable is rotatably connected to a connecting rod, one end of the connecting rod is rotatably connected to a limiting plate, a first support frame is provided at the lower end of the moving belt group, and limiting frames are provided at both ends of the first support frame, both of the two limiting frames are slidably connected to the limiting plates, a support plate is fixedly connected between the two limiting plates, the support plate is located at the lower end of the printing roller, and the support plate is located in the middle of the moving belt group.

[0008] Preferably, the limiting plate is a T-shaped plate, and the limiting frame is a mouth-shaped frame.

[0009] Preferably, one end of the printing roller is rotatably connected to a first limit block, one end of the first limit block is fixedly connected to a support rod, the bottom end of the first support frame is fixedly connected to a second limit block, a sliding groove is provided in the middle of the second limit block, the support rod is slidably connected in the sliding groove, one side of the second limit block is rotatably connected to the limit rod, and one side of the limit rod is in contact with the support rod.

[0010] Preferably, the front side of the sliding groove is a T-shaped groove, the support rod is matched with the sliding groove, and the end of the limiting rod that is not in contact with the support rod is arc-shaped.

[0011] The beneficial effects of the present invention are as follows: the motor drives the rotating shaft to rotate through the transmission belt group, and the rotating shaft drives the printing roller to rotate through the connecting block. The printing roller is a cam roller, so that the printing roller presses downward when embossing the cast film, thereby increasing the pressure during embossing and improving the clarity of the embossing, so that the required clarity can be obtained by embossing once, and the problem of embossing blur caused by the difficulty in completely overlapping the embossing positions during multiple embossing is avoided; The support rod limits the rotation position of the printing roller through the first limit block, and the second limit block limits the movement position of the support rod through the sliding groove, so that the support rod drives the first limit block to move and releases the restriction on the printing roller, making the printing roller easy to replace according to needs, and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of an embodiment of the present invention; Figure 2 It is a partially cutaway three-dimensional structural schematic diagram of the second limiting block of the present invention; Figure 3 It is a partially cutaway three-dimensional structural schematic diagram of the first limiting block and the limiting frame of the present invention; Figure 4 It is a partially cutaway three-dimensional structural schematic diagram of the rotating shaft of the present invention; The markings in the figure are: 1. Moving belt group; 2. Motor; 3. Driving belt group; 4. Rotating shaft; 5. Connecting block; 6. Printing roller; 7. Turntable; 8. Connecting rod; 9. Limiting plate; 10. Supporting plate; 11. Limiting frame; 12. First supporting frame; 13. First limiting block; 14. Supporting rod; 15. Second limiting block; 16. Limiting rod; 17. Sliding groove. DETAILED DESCRIPTION

[0013] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0014] like Figure 1-Figure 4As shown, a water-soluble PVA cast film production device includes a moving belt group 1, which is a prior art and is not particularly limited here; one end of the moving belt group 1 is fixedly connected to a motor 2, and the output shaft of the motor 2 is fixedly sleeved with a transmission belt group 3, which is a prior art and is not particularly limited here; one end of the transmission belt group 3 is fixedly connected to a rotating shaft 4, and a connecting block 5 is movably connected to the middle of the rotating shaft 4, and one end of the connecting block 5 is fixedly connected to a printing roller 6, which is a cam roller, and the connecting block 5 is polygonal, the output shaft of the motor 2 is fixedly connected to the moving belt group 1, and both ends of the moving belt group 1 are rotatably connected to a fixed frame, the fixed frame is fixedly set on the ground, and the motor 2 is fixed to one side of the fixed frame;The other end of the transmission belt group 3 is fixedly connected to a turntable 7, one end of the turntable 7 is rotatably connected to a connecting rod 8 at an eccentric position, one end of the connecting rod 8 is rotatably connected to a limiting plate 9, one end of the limiting plate 9 is fixedly connected to a supporting plate 10, a first supporting frame 12 is provided at the lower end of the mobile belt group 1, both ends of the first supporting frame 12 are provided with limiting frames 11, the two limiting frames 11 are slidably connected to the limiting plates 9, a supporting plate 10 is fixedly connected between the two limiting plates 9, the supporting plate 10 is located at the lower end of the printing roller 6, the supporting plate 10 is located in the middle of the mobile belt group 1, the limiting plate 9 is a T-shaped plate, the limiting frame 11 is a mouth-shaped frame, and when in use, the transmission belt group 3 is fixedly sleeved through the output shaft of the motor 2, and the transmission One end of the belt group 3 is fixedly connected to a rotating shaft 4, so that the motor 2 drives the rotating shaft 4 to rotate through the transmission belt group 3, and a connecting block 5 is movably connected through the middle of the rotating shaft 4. One end of the connecting block 5 is fixedly connected to a printing roller 6, and the connecting block 5 is polygonal, so that the rotating shaft 4 drives the printing roller 6 to rotate through the connecting block 5. The printing roller 6 is a cam roller, so that the printing roller 6 will squeeze downward when embossing the cast film, increase the pressure during embossing, improve the clarity of the embossing, so that the required clarity can be obtained by embossing once, and the problem of embossing blur caused by the difficulty in completely overlapping the embossing positions during multiple embossing is avoided. When a cast film that needs to be embossed densely is produced, multiple groups of printing rollers can be used. The pattern roller 6 is embossed to meet the production needs of different cast films. The output shaft of the motor 2 is fixedly connected to the moving belt group 1, so that when the motor 2 is started, the moving belt group 1 will be driven to rotate, thereby driving the cast film to move. The other end of the transmission belt group 3 is fixedly connected with a turntable 7, one end of the turntable 7 is rotatably connected to a connecting rod 8, and one end of the connecting rod 8 is rotatably connected to a limiting plate 9, so that when the transmission belt group 3 rotates, the limiting plate 9 is driven to reciprocate through the turntable 7 and the connecting rod 8, so that the limiting plate 9 cooperates with the printing roller 6 to move. A first support frame 12 is provided at the lower end of the moving belt group 1, and limiting frames 11 are provided at both ends of the first support frame 12. The two limiting frames 11 They are all slidably connected with the limiting plate 9, and a support plate 10 is fixedly connected between the two limiting plates 9. The support plate 10 is located at the lower end of the printing roller 6, and the support plate 10 is located in the middle of the moving belt group 1, so that when the limiting plate 9 moves, it will drive the support plate 10 to move, so that the support plate 10 moves with the printing roller 6, so that when the printing roller 6 is pressed downward, the support plate 10 provides an upward force to make the printing roller 6 fit with the cast film, print the cast film, and also prolong the contact time between the printing roller 6 and the cast film, and improve the printing clarity of the cast film. The limiting plate 9 is a T-shaped plate, and the limiting frame 11 is a mouth-shaped frame, so that the limiting frame 11 can limit the position of the limiting plate 9 in a relatively stable manner. ;

[0015] As a preferred implementation in this embodiment, Figure 1 and Figure 2As shown, one end of the printing roller 6 is rotatably connected to the first limit block 13, one end of the first limit block 13 is fixedly connected to the support rod 14, the bottom end of the first support frame 12 is fixedly connected to the second limit block 15, the middle part of the second limit block 15 is provided with a sliding groove 17, the support rod 14 is slidably connected in the sliding groove 17, one side of the second limit block 15 is rotatably connected to the limit rod 16, one side of the limit rod 16 is in contact with the support rod 14, the front side of the sliding groove 17 is a T-shaped groove, the support rod 14 is adapted to the sliding groove 17, and the end of the limit rod 16 that is not in contact with the support rod 14 is arc-shaped, and the first limit block 13 is rotatably connected to one end of the printing roller 6, and one end of the first limit block 13 is fixedly connected to the support rod 14, so that the support rod 14 limits the rotation position of the printing roller 6 through the first limit block 13, and the second limit block 15 is fixedly connected to the bottom end of the first support frame 12, and the second limit A sliding groove 17 is provided in the middle of the block 15, and the support rod 14 is slidably connected to the sliding groove 17, so that the second limit block 15 limits the moving position of the support rod 14 through the sliding groove 17, so that the support rod 14 drives the first limit block 13 to move and then releases the restriction on the printing roller 6, so that the printing roller 6 is easy to replace according to needs, and the practicality is better. The limit rod 16 is rotatably connected to one side of the second limit block 15, and one side of the limit rod 16 is in contact with the support rod 14, so that the limit rod 16 can limit the position of the support rod 14 and the first limit block 13 after being connected to the printing roller 6, to prevent the support rod 14 from moving during operation. The front side of the sliding groove 17 is a T-shaped groove, and the support rod 14 is adapted to the sliding groove 17, so that the connection between the support rod 14 and the second limit block 15 is stable, and the end of the limit rod 16 that is not in contact with the support rod 14 is arc-shaped, so that the limit rod 16 is easy to use.

[0016] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0017] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water-soluble PVA cast film production device, comprising a moving belt group (1), characterized in that: One end of the moving belt group (1) is fixedly connected to a motor (2), an output shaft of the motor (2) is fixedly sleeved with a transmission belt group (3), one end of the transmission belt group (3) is fixedly connected to a rotating shaft (4), a connecting block (5) is movably connected to the middle of the rotating shaft (4), one end of the connecting block (5) is fixedly connected to a printing roller (6), the printing roller (6) is a cam roller, and the connecting block (5) is a polygon.

2. The water-soluble PVA cast film production device according to claim 1, characterized in that: The output shaft of the motor (2) is fixedly connected to the moving belt group (1), and both ends of the moving belt group (1) are rotatably connected to a fixing frame, which is arranged on the ground.

3. The water-soluble PVA cast film production device according to claim 1, characterized in that: The other end of the transmission belt group (3) is fixedly connected to a turntable (7), one end of the turntable (7) is rotatably connected to a connecting rod (8), one end of the connecting rod (8) is rotatably connected to a limit plate (9), a first support frame (12) is provided at the lower end of the moving belt group (1), both ends of the first support frame (12) are provided with limit frames (11), both of the two limit frames (11) are slidably connected to the limit plates (9), a support plate (10) is fixedly connected between the two limit plates (9), the support plate (10) is located at the lower end of the printing roller (6), and the support plate (10) is located in the middle of the moving belt group (1).

4. The water-soluble PVA cast film production device according to claim 3, characterized in that: The limiting plate (9) is a T-shaped plate, and the limiting frame (11) is a mouth-shaped frame.

5. The water-soluble PVA cast film production device according to claim 3, characterized in that: One end of the printing roller (6) is rotatably connected to a first limit block (13), one end of the first limit block (13) is fixedly connected to a support rod (14), the bottom end of the first support frame (12) is fixedly connected to a second limit block (15), a sliding groove (17) is provided in the middle of the second limit block (15), the support rod (14) is slidably connected in the sliding groove (17), one side of the second limit block (15) is rotatably connected to the limit rod (16), and one side of the limit rod (16) is in contact with the support rod (14).

6. The water-soluble PVA cast film production device according to claim 5, characterized in that: The front side of the sliding groove (17) is a T-shaped groove, the support rod (14) is matched with the sliding groove (17), and the end of the limiting rod (16) that is not in contact with the support rod (14) is arc-shaped.

Images