Gluing mechanism for PVC-PVDC composite film

Abstract

The utility model discloses a PVC-PVDC composite membrane gluing mechanism, and relates to the field of composite membranes, the PVC-PVDC composite membrane gluing mechanism comprises a device bottom plate, the top of the device bottom plate is fixedly connected with vertical plates, a horizontal plate is fixedly connected between the two vertical plates, the top of the device bottom plate is provided with a jacking mechanism, and the bottom of the horizontal plate is provided with a thickness self-adaptive structure. A surface treatment structure is arranged at the top of the device bottom plate, and through the structural arrangement, the glue coating mechanism for the PVC-PVDC composite film can achieve the effect that after the amount of glue in a glue box is reduced and the mass of the glue box is reduced, a lifting spring lifts the glue box to vertically move upwards through elasticity; therefore, the glue plane of the glue box always keeps a sufficient contact surface with the lower end of the gluing roller, so that the gluing roller can be stained with sufficient glue all the time during rotation, and the problem that the gluing roller cannot be stained with sufficient glue due to continuous reduction of the water level height along with continuous use of the glue is solved.

Description

Technical Field

[0001] The present application relates to the field of composite films, and in particular to a gluing mechanism for a PVC-PVDC composite film. Background Art

[0002] The gluing mechanism of the PVC-PVDC composite film is used to coat PVDC on the PVC substrate to enhance the barrier properties of the film, prevent the penetration of moisture and oxygen, and protect the medicines or foods in the package from being affected by the external environment.

[0003] For example, Publication No. 202410012945.9 discloses a PVC-PVDC composite film production device and production process, including a frame, on which a first unwinding mechanism, a gluing mechanism, a drying tunnel, a second unwinding mechanism, a compounding mechanism and a winding mechanism are arranged. The front, middle and rear sections of the drying tunnel are respectively a preheating zone, a heating zone and a cooling zone. Two gas diversion mechanisms are arranged on the drying tunnel. The gas in the heating zone passes through the two gas diversion mechanisms and enters the preheating zone and the cooling zone respectively. The gas diversion mechanism is used to regulate the gas temperature and flow rate. However, there are still the following deficiencies in actual use:

[0004] When the PVC-PVDC composite film production equipment and production process of the above patent are actually used, the upper and lower surfaces of the composite film are clamped by two fixed-axis wheels, and then the wheel at the bottom of the composite glue is continuously rotated to contaminate the glue at the bottom of the wheel and then brushed on the bottom of the composite film by rotation. Glue is a consumable. When used continuously, the amount of glue will gradually decrease, so that the contact area between the bottom wheel and the glue becomes smaller and smaller, so that the amount of glue on the surface of the wheel is insufficient to support continuous glue coating, resulting in uneven glue amount on the surface of the composite film. In addition, since the measuring bucket shafts are fixed, the wheel spacing between the two wheels is fixed, which is not suitable for composite films of different thicknesses. When the process stops, the glue on the surface of the wheel needs to be manually solidified by a spatula or a steel wire ball after drying. Manual treatment can easily cause damage to the roller surface, thereby affecting the quality of subsequent glue coating processes. Utility Model Content

[0005] In order to improve the problems of reduced contact between glue and the surface of the rotating wheel, incompatibility with composite glues of different thicknesses, and inconvenience in manually handling solidified glue, the present application provides a gluing mechanism for a PVC-PVDC composite film.

[0006] The gluing mechanism of a PVC-PVDC composite film provided in the present application adopts the following technical solution:

[0007] A glue coating mechanism for a PVC-PVDC composite film, comprising a device bottom plate, a vertical plate fixedly connected to the top of the device bottom plate, a horizontal plate fixedly connected between two of the vertical plates, a jacking mechanism arranged on the top of the device bottom plate, a thickness adaptive structure arranged on the bottom of the horizontal plate, and a surface treatment structure arranged on the top of the device bottom plate;

[0008] The lifting mechanism comprises an L-shaped plate fixedly connected to the top of the device bottom plate, and a glue box is slidably connected to the inner wall of the L-shaped plate;

[0009] The thickness adaptive structure comprises a connecting plate fixedly connected to the bottom of the horizontal plate, a sliding shaft movably penetrates the side wall of the connecting plate, the sliding shaft penetrates the connecting plate and extends to one end inside which is fixedly connected to a pressing roller, and a fixed shaft movably penetrates the side wall of the connecting plate, and the fixed shaft penetrates the side wall of the connecting plate and extends to one end inside which is fixedly connected to a glue coating roller;

[0010] The surface treatment structure comprises a connecting piece fixedly connected to the side wall of the connecting plate, a rotating rod movably penetrates the side wall of the connecting piece, a connecting horizontal bar is fixedly connected to the middle side wall of the rotating rod, and a scraper is fixedly connected to one end of the connecting horizontal bar away from the rotating rod.

[0011] By adopting the above technical solution, the bottom of the glue coating roller always maintains a sufficient contact area with the glue through the lifting of the lifting mechanism.

[0012] Preferably, the lifting mechanism further comprises a limit plate fixedly connected to the top of the L-shaped plate, and the top of the device bottom plate is fixedly connected to a lifting spring fixedly connected to the bottom of the glue box.

[0013] By adopting the above technical solution, the limiting plate can limit the glue box.

[0014] Preferably, the thickness adaptive structure further comprises a collar which is sleeved on an outer wall of one side of the sliding shaft which passes through the connecting plate and extends to the outside, and a vertical column is fixedly connected to the top of the collar.

[0015] By adopting the above technical solution, the vertical column can drive the sliding shaft to move through the sleeve ring.

[0016] Preferably, a limiting disc is fixedly connected to the top of the vertical column, and a cylinder fixedly connected to the bottom of the horizontal plate is slidably connected to the outer wall of the limiting disc.

[0017] By adopting the above technical solution, the cylinder limits the vertical column through the limiting disc, so that the vertical column can only move vertically.

[0018] Preferably, a buffer spring fixedly connected to the bottom of the horizontal plate is fixedly connected to the top of the limiting disc, and a protective shell is fixedly connected to the bottom side wall of the connecting plate.

[0019] By adopting the above technical solution, the fixed rotating shaft is protected by the protective shell.

[0020] Preferably, the surface treatment structure further comprises a vertical card box fixedly connected to the top of the connecting piece, and the rotating rod movably passes through the side wall of the connecting piece and extends to the outside, and a fixed sleeve is provided with a fixing ring at one end.

[0021] By adopting the above technical solution, the rotating rod can be driven to rotate through the fixing ring.

[0022] Preferably, a driving member is fixedly connected to the side wall of the fixing ring, and the side wall at one end of the driving member away from the fixing ring movably penetrates the limiting strip.

[0023] By adopting the above technical solution, the fixing ring can be driven to rotate through the limiting strip.

[0024] Preferably, one end of the limit bar away from the driving member movably penetrates a horizontal card box fixedly connected to one end of the connecting member away from the connecting plate.

[0025] By adopting the above technical solution, the horizontal card box can limit the rotation of the driving member through the limiting bar.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. When the amount of glue in the glue box decreases and the weight of the glue box becomes lighter, the lifting spring will lift the glue box upward vertically through elasticity, so that the glue level of the glue box always maintains a sufficient contact surface with the lower end of the glue roller, so that the glue roller can always be stained with sufficient glue when rotating, thereby improving the problem that the glue roller cannot be stained with enough glue due to the continuous decrease of the water level height as the glue is used;

[0028] 2. When the thickness of the composite film becomes thicker, the distance between the pressing roller and the gluing roller needs to be increased. At this time, since the gluing roller shaft is fixed, the pressing roller moves upward, thereby driving the vertical column to move upward through the sliding shaft, so that the buffer spring is compressed, and the sliding shaft is given a downward force through the buffer spring, so that the pressing roller always fits the top of the composite film downward, thereby ensuring that the composite film is always in a flat state during the gluing process and can also be applied to the gluing process of composite films of different thicknesses;

[0029] 3. The driving member drives the rotating rod to rotate so that the scraping member rotates along with the connecting horizontal bar, so that the scraping member is in a vertical state and the inclined sharp end is in contact with the outer wall of the glue coating roller. Then the glue coating roller is rotated, and the solidified glue on the surface of the glue coating roller is evenly scraped off by the scraping member, thereby avoiding damage to the surface of the glue coating roller due to manual shoveling. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a diagram showing the overall structure of the gluing mechanism of the PVC-PVDC composite film of this application;

[0031] Figure 2 This is a diagram showing the overall structure of the gluing mechanism of the PVC-PVDC composite film of the present application from another perspective;

[0032] Figure 3 This is a partial display diagram of the glue box of the gluing mechanism of the PVC-PVDC composite film of this application;

[0033] Figure 4 It is a partial cross-sectional view of the vertical column of the gluing mechanism of the PVC-PVDC composite film of the present application;

[0034] Figure 5 This is a partial display diagram of the protective shell of the gluing mechanism of the PVC-PVDC composite film of this application;

[0035] Figure 6 Gluing mechanism for PVC-PVDC composite film of this application Figure 5 A partial enlarged view of point A in the middle.

[0036] Reference numerals:

[0037] 1. Installation bottom plate; 11. Vertical plate; 12. Horizontal plate;

[0038] 2. Lifting mechanism; 21. L-shaped plate; 22. Lifting spring; 23. Glue box; 24. Limiting plate;

[0039] 3. Thickness adaptive structure; 31. Connecting plate; 32. Sliding shaft; 33. Pressing roller; 34. Ring; 35. Vertical column; 36. Limiting disc; 37. Cylinder; 38. Buffer spring; 39. Fixed shaft; 310. Protective shell; 311. Gluing roller;

[0040] 4. Surface treatment structure; 41. Connecting piece; 42. Vertical card box; 43. Rotating rod; 44. Fixed ring; 45. Driving piece; 46. Limiting strip; 47. Horizontal card box; 48. Connecting cross bar; 49. Scraping piece. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-6This application is described in further detail.

[0042] The embodiment of the present application discloses a gluing mechanism for a PVC-PVDC composite film.

[0043] Example 1

[0044] Reference Figure 1 A gluing mechanism for a PVC-PVDC composite film includes a device bottom plate 1, the top of the device bottom plate 1 is fixedly connected to the bottom of a vertical plate 11, the side walls between the two vertical plates 11 are fixedly connected to the two ends of a horizontal plate 12 close to the vertical plates 11, a jacking mechanism 2 is arranged on the top of the device bottom plate 1, a thickness adaptive structure 3 is arranged at the bottom of the horizontal plate 12, and a surface treatment structure 4 is arranged on the top of the device bottom plate 1.

[0045] The staff places the device bottom plate 1 stably on the ground, places the side of the composite film that needs to be coated with glue downward inside the thickness adaptive structure 3, and pours glue into the lifting mechanism 2.

[0046] Reference Figure 2 , 3. The lifting mechanism 2 includes an L-shaped plate 21 fixedly connected to the top of the device bottom plate 1. The L-shaped plate 21 fits with the four diagonal outer walls of the glue box 23, so that the glue box 23 is slidably connected to the L-shaped plate 21, so that the glue box 23 can only move vertically. The lifting mechanism 2 also includes a limit plate 24 fixedly connected to the top of the L-shaped plate 21, and the limit plate 24 can limit the glue box 23 from continuing to move vertically upward. The top of the device bottom plate 1 is fixedly connected to the bottom of the lifting spring 22, and the top of the lifting spring 22 is fixedly connected to the bottom of the glue box 23, so that the glue box 23 is lifted by the lifting spring 22. The weight of the glue loaded inside the glue box 23 can match the deformation of the lifting spring 22. When the glue becomes less, the glue box 23 has sufficient deformation force to drive the glue box 23 to move upward.

[0047] As the thickness adaptive structure 3 continues to apply glue, the amount of glue inside the glue box 23 will gradually decrease, and the glue water level inside the glue box 23 will gradually drop. At this time, the contact area between the glue-applying roller 311 and the glue will also gradually decrease. However, as the amount of glue decreases, the overall mass of the glue box 23 will also become lighter. At this time, the lifting spring 22 will recover from the initial contracted state to the normal state due to its own elasticity, thereby pushing the glue box 23 to move vertically upward through the lifting spring 22, thereby driving the water level line of the glue inside the glue box 23 to rise, thereby ensuring that the thickness adaptive structure 3 can carry sufficient glue during the gluing process before the glue inside the glue box 23 is consumed.

[0048] Reference Figure 4The cam 32 is provided with a plurality of locking plates 34, each of which is provided with a plurality of locking plates 34, each of which is provided with a plurality of locking plates 34. The locking plates 32 are provided with a plurality of locking plates 34, each of which is provided with a plurality of locking plates 34. The locking plates 32 are provided with a plurality of locking plates 34, each of which is provided with a plurality of locking plates 34. A collar 34 passes through the connecting plate 31 and extends to the outer wall of one side. The top of the collar 34 is fixedly connected to the bottom of the vertical column 35, so that when the collar 34 drives the vertical column 35 to move vertically upward, the sliding shaft 32 can still rotate. The top of the vertical column 35 is fixedly connected to the bottom of the limiting disc 36. A second circular hole is opened at the bottom of the inner wall of the cylinder 37. The outer wall of the vertical column 35 fits the inner wall of the second circular hole. The outer wall of the limiting disc 36 is slidably connected to the inner wall of the cylinder 37. The top of the cylinder 37 is connected to the horizontal plate 12 bottom is fixedly connected, thereby the cylinder 37 is fixed by the horizontal plate 12, the top of the limiting disk 36 is fixedly connected to the end of the buffer spring 38 close to the limiting disk 36, the end of the buffer spring 38 away from the limiting disk 36 is fixedly connected to the bottom of the horizontal plate 12, thereby fixing the buffer spring 38, and the bottom side wall of the connecting plate 31 is fixedly connected to the side of the protective shell 310 close to the connecting plate 31, thereby preventing the glue from directly contacting the fixed rotating shaft 39, thereby improving the safety of the mechanism.

[0049] When the glue coating process is carried out, the composite film will continue to move horizontally between the pressing roller 33 and the glue coating roller 311, and the composite film will drive the pressing roller 33 and the glue coating roller 311 to rotate through friction. At this time, the bottom of the glue coating roller 311 is immersed in the glue inside the glue box 23. As the glue coating roller 311 rotates, the glue coating roller 311 sticks the glue to the outer wall of the glue coating roller 311 and thus smears it on the bottom of the composite film. When the thickness of the composite film is higher than the original distance between the pressing roller 33 and the glue coating roller 311, the pressing roller 33 will be lifted vertically, and the pressing roller 33 drives the sliding shaft 32 to move vertically upward. 32 will drive the vertical column 35 to move vertically, the vertical column 35 will drive the limiting disc 36 to move vertically upward, the limiting disc 36 will move vertically upward to compress the buffer spring 38, so that the buffer spring 38 generates a vertical downward reverse pressure on the limiting disc 36, the reverse pressure received by the limiting disc 36 will be transmitted to the ring 34 through the vertical column 35, and then transmitted from the ring 34 to the sliding shaft 32, and then transmitted from the sliding shaft 32 to the pressing roller 33, so that the bottom of the pressing roller 33 and the top of the composite film are kept in contact with each other, so as to avoid wrinkles and the like during the gluing process, thereby causing uneven coating.

[0050] Reference Figure 6 The surface treatment structure 4 includes a connecting piece 41 fixedly connected to the side wall of the connecting plate 31, and a circular hole three is opened on the side wall of the connecting piece 41. The rotating rod 43 movably penetrates the circular hole three, so that the rotating rod 43 is rotatably connected to the connecting piece 41. The middle side wall of the rotating rod 43 is fixedly connected to the bottom of the connecting horizontal bar 48, so that the connecting horizontal bar 48 is driven to rotate by the rotating rod 43. The end of the connecting horizontal bar 48 away from the rotating rod 43 is fixedly connected to the connecting end of the scraper 49. The surface treatment structure 4 also includes a vertical card box 42 fixedly connected to the top of the connecting piece 41, and a square groove one is opened on the side wall of the vertical card box 42. A circular hole four is opened on the side wall of the fixing ring 44. The rotating rod 43 movably penetrates the side wall of the connecting piece 41 and extends to the outside. One end is fixedly passed through circular hole four, so that the fixing ring 44 is fixedly connected to the rotating rod 43, the side wall of the fixing ring 44 is fixedly connected to the end of the driving member 45 close to the fixing ring 44, and the side wall of the driving member 45 away from the fixing ring 44 is provided with a penetrating square groove two, and the limiting bar 46 horizontally passes through the square groove two, so that the limiting bar 46 and the driving member 45 are slidably connected, and the side wall of the horizontal card box 47 is provided with a square groove three, and the end of the limiting bar 46 away from the driving member 45 movably passes through the square groove three, so that the horizontal card box 47 and the limiting bar 46 are slidably connected, and the horizontal card box 47 is fixedly connected to the end of the connecting member 41 away from the connecting plate 31, and the square groove one and the square groove three have the same shape, and both can be slidably connected with the limiting bar 46.

[0051] When the gluing process stops, the glue will gradually solidify after being stationary, and thus adhere to the surface of the gluing roller 311, making it inconvenient to perform the gluing work next time. At this time, the staff pulls the limit bar 46 to make the limit bar 46 contact and engage with the horizontal card box 47, and then the staff rotates the driving member 45 counterclockwise to make the driving member 45 change from a horizontal state to a vertical state, and the driving member 45 will drive the fixing ring 44 to rotate, the fixing ring 44 will drive the rotating rod 43 to rotate, the rotating rod 43 will drive the connecting cross bar 48 to rotate, and the connecting cross bar 48 will The scraper 49 is driven to rotate, so that the side of the scraper 49 away from the connecting horizontal bar 48 is fitted with the surface of the glue roller 311, and then the limit bar 46 is clamped with the vertical card box 42 to fix the rotating rod 43. Then the staff rotates the fixed shaft 39, so that the fixed shaft 39 drives the glue roller 311 to rotate. When the glue roller 311 rotates, the solidified glue on the surface of the glue roller 311 will be scraped off by the scraper 49 and fall into the glue box 23, which makes the handling of the solidified glue more convenient.

[0052] The implementation principle of the gluing mechanism of a PVC-PVDC composite film in the embodiment of the present application is:

[0053] When the amount of glue gradually decreases, the mass of the glue box 23 will also gradually decrease, and the lifting spring 22 will drive the glue box 23 to move vertically upward, so that the glue water level line inside the glue box 23 rises as a whole, so that the lower end of the glue coating roller 311 maintains full contact with the glue.

[0054] When applying glue, the composite film will drive the pressing roller 33 and the gluing roller 311 to rotate through friction. When the thickness of the composite film is higher than the original distance between the pressing roller 33 and the gluing roller 311, the pressing roller 33 will be lifted vertically. The pressing roller 33 will drive the vertical column 35 to move vertically upward. The vertical column 35 will drive the limiting disk 36 to move vertically upward. The limiting disk 36 will move vertically upward to compress the buffer spring 38, so that the buffer spring 38 will generate a vertical downward reverse pressure on the limiting disk 36, so that the bottom of the pressing roller 33 and the top of the composite film remain in contact.

[0055] When the machine stops running, the staff rotates the driving member 45 to drive the connecting cross bar 48 to rotate, and the buffer spring 38 will drive the scraper 49 to rotate, thereby driving the front end of the scraper 49 to fit the outer wall of the glue coating roller 311, and then the staff rotates the glue coating roller 311, so that the solidified glue on the outer wall of the glue coating roller 311 is scraped off by the scraper 49, thereby performing surface treatment of the glue coating roller 311 without damaging the surface of the glue coating roller 311.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A glue coating mechanism for a PVC-PVDC composite film, comprising a device bottom plate (1), a vertical plate (11) being fixedly connected to the top of the device bottom plate (1), and a horizontal plate (12) being fixedly connected between two of the vertical plates (11), characterized in that: A lifting mechanism (2) is provided on the top of the device bottom plate (1), a thickness adaptive structure (3) is provided on the bottom of the horizontal plate (12), and a surface treatment structure (4) is provided on the top of the device bottom plate (1); The lifting mechanism (2) comprises an L-shaped plate (21) fixedly connected to the top of the device bottom plate (1), and a glue box (23) is slidably connected to the inner wall of the L-shaped plate (21); The thickness adaptive structure (3) comprises a connecting plate (31) fixedly connected to the bottom of the horizontal plate (12); a sliding shaft (32) movably penetrates the side wall of the connecting plate (31); the sliding shaft (32) penetrates the connecting plate (31) and extends to one end inside thereof and is fixedly connected to a pressing roller (33); a fixed shaft (39) movably penetrates the side wall of the connecting plate (31); the fixed shaft (39) penetrates the side wall of the connecting plate (31) and extends to one end inside thereof and is fixedly connected to a glue coating roller (311); The surface treatment structure (4) comprises a connecting member (41) fixedly connected to the side wall of the connecting plate (31); a rotating rod (43) movably penetrates the side wall of the connecting member (41); a connecting cross bar (48) is fixedly connected to the middle side wall of the rotating rod (43); and a scraping member (49) is fixedly connected to one end of the connecting cross bar (48) away from the rotating rod (43).

2. The gluing mechanism for a PVC-PVDC composite film according to claim 1, characterized in that: The lifting mechanism (2) also includes a limit plate (24) fixedly connected to the top of the L-shaped plate (21), and a lifting spring (22) fixedly connected to the bottom of the glue box (23) is fixedly connected to the top of the device bottom plate (1).

3. The gluing mechanism for a PVC-PVDC composite film according to claim 1, characterized in that: The thickness adaptive structure (3) further comprises a collar (34) which is sleeved on the sliding shaft (32), penetrates the connecting plate (31) and extends to the outer wall of one side, and a vertical column (35) is fixedly connected to the top of the collar (34).

4. The gluing mechanism for a PVC-PVDC composite film according to claim 3, characterized in that: The top of the vertical column (35) is fixedly connected to a limiting disc (36), and the outer wall of the limiting disc (36) is slidably connected to a cylinder (37) fixedly connected to the bottom of the horizontal plate (12).

5. The gluing mechanism for a PVC-PVDC composite film according to claim 4, characterized in that: The top of the limiting disc (36) is fixedly connected to a buffer spring (38) which is fixedly connected to the bottom of the horizontal plate (12), and the bottom side wall of the connecting plate (31) is fixedly connected to a protective shell (310).

6. The gluing mechanism for a PVC-PVDC composite film according to claim 1, characterized in that: The surface treatment structure (4) also includes a vertical card box (42) fixedly connected to the top of the connecting piece (41), and the rotating rod (43) movably penetrates the side wall of the connecting piece (41) and extends to the outside. One end is fixedly sleeved with a fixing ring (44).

7. The gluing mechanism for a PVC-PVDC composite film according to claim 6, characterized in that: The side wall of the fixing ring (44) is fixedly connected with a driving member (45), and the side wall at one end of the driving member (45) away from the fixing ring (44) movably penetrates the limiting strip (46).

8. The gluing mechanism for a PVC-PVDC composite film according to claim 7, characterized in that: One end of the limit strip (46) away from the driving member (45) movably penetrates a horizontal card box (47) fixedly connected to one end of the connecting member (41) away from the connecting plate (31).

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