A kind of gluing device for packaging film processing

Abstract

The application discloses a kind of gluing device for packaging film processing, specifically relates to packaging film processing technical field, including glue roller, glue roller inside hollow, located glue roller side is provided with overflow glue hole, glue roller one end is rotatably connected with glue supply mechanism, glue supply mechanism includes glue cavity, glue roller inside is communicated with glue cavity, the first glue baffle that the second glue baffle of glue roller inside slidingly connects in glue roller inner wall is attached, first glue baffle, second glue baffle are drivingly connected with adjusting mechanism.The glue that glue supply cavity sends into glue roller is discharged by overflow glue hole between first glue baffle, second glue baffle, can be glued to the part of packaging film, can adjust gluing position according to demand, it is applicable to specific width packaging film gluing or packaging film specific position gluing.

Description

Technical Field

[0001] This invention relates to the field of packaging film processing, specifically to an adhesive coating device for packaging film processing. Background Technology

[0002] Packaging films are used for packaging various foods and commodities, including polyethylene film and CPP film. During the processing, adhesive needs to be applied to the surface of the packaging film to make it adhesive.

[0003] For example, patent application CN110435171A discloses a PVC packaging film and its production process. This PVC packaging film is prepared from the following raw materials in parts by weight: 0.03-0.04 parts plasticizer, 7-9 parts stabilizer, 0.1-0.2 parts nano-magnetic powder, 0.15-0.22 parts nano-activated carbon, 3-5 parts titanium dioxide, 3.5-6 parts flame retardant, and 90-100 parts PVC resin. S4: The three sets of packaging film shafts obtained in S3 are installed at one end of the composite device. The coating structure inside the composite device coats the upper and lower surfaces of the middle layer packaging film with transparent water-based adhesive. The other two layers of packaging film are bonded to the upper and lower surfaces of the middle layer packaging film with transparent water-based adhesive. The small amount of material inside the packaging film does not affect its transparency and can absorb light. Black has strong light absorption capacity, heats up quickly, and improves the softness of the packaging film. It can absorb its own odor, and the packaging film can also absorb external odors during use. Furthermore, the magnetic powder has a magnetic adsorption function, allowing the packaging film to adhere tightly to ferrous metals.

[0004] However, existing glue coating equipment has a fixed glue roller length, making it difficult to control the glue coating surface when applying glue to packaging films of different widths or different parts of the packaging film. Summary of the Invention

[0005] The purpose of this invention is to provide an adhesive coating apparatus for packaging film processing, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A coating device for packaging film processing includes a coating roller, which is hollow inside and has an overflow hole on its side. One end of the coating roller is rotatably connected to a glue supply mechanism, which includes a glue supply chamber. The interior of the coating roller communicates with the glue supply chamber. A first glue baffle and a second glue baffle are slidably connected to the inner wall of the coating roller and are driven by an adjustment mechanism.

[0007] Preferably, the adjusting mechanism includes a first telescopic rod connected to one end of the coating roller, the inner end of the movable rod of the first telescopic rod being fixedly connected to a first baffle plate, and a second telescopic rod connected to the other end of the coating roller, the inner end of the movable rod of the second telescopic rod being fixedly connected to a second baffle plate.

[0008] Preferably, the second baffle plate has a glue supply hole on its side, and the glue supply hole of the second baffle plate is connected to the hollow rotating ring through a glue supply pipe, and the hollow rotating ring is connected to the glue supply cavity.

[0009] Preferably, the right end of the coating roller is provided with an annular through hole, and the hollow rotating ring includes an inner rotating ring rotatably connected to the inner side of the annular through hole, the glue supply pipe is connected to the inner rotating ring, and an outer rotating ring is located outside the annular through hole and connected to the glue supply chamber.

[0010] Preferably, the right end of the coating roller is connected to a toothed ring, which is connected to a glue supply mechanism connected to the glue supply chamber. The glue supply mechanism includes a glue supply gear that meshes with the toothed ring. The glue supply gear is coaxially and fixedly connected to a cam. The cam is rotatably connected to a connecting rod, and the connecting rod is rotatably connected to a pump rod that slides inside the glue pump cylinder.

[0011] Preferably, the bottom end of the glue pump cylinder is connected to the glue coating roller, the top end of the glue pump cylinder is open, the top end of the glue pump cylinder is connected to a ring array of limiting rods, the pump rod is fixedly connected to the piston, and the bottom end of the piston is an arc surface.

[0012] Preferably, the pump cartridge is slidably connected to the bottom of the glue supply chamber, and the pump cartridge is connected to a measuring rod fixed to the bottom of the glue supply chamber by fixing bolts.

[0013] Preferably, the left end of the coating roller is connected to a drive gear, the drive gear is hollow in the middle, and the side of the drive gear is fixedly connected to the coating roller through a connecting ring.

[0014] Preferably, a closed arc plate is attached to the outer side of the coating roller, and the side of the closed arc plate has an opening that is parallel to the axis of the coating roller.

[0015] Preferably, the opening edge of the closed arc plate is an inclined surface tangent to the glue-applying roller, and a recycling trough is provided below the opening edge of the closed arc plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are: An overflow hole is provided on the side of the coating roller. A first baffle plate and a second baffle plate are slidably arranged inside the coating roller, forming a glue cavity between the first baffle plate and the second baffle plate. The glue fed into the coating roller from the glue supply cavity is discharged through the overflow hole between the first baffle plate and the second baffle plate, which can apply glue to the part that passes through the packaging film. The glue application position can be adjusted according to the needs. The first and second baffle plates are controlled to move via the first and second telescopic rods. The second baffle plate is connected to the glue supply pipe, and the glue supply pipe is connected to the hollow rotating ring, so that the glue coating roller rotates relative to the hollow rotating ring during rotation, and can stably supply glue during the rotation of the glue coating roller. A toothed ring is connected to the right end of the coating roller. The toothed ring is connected to the glue supply gear. The glue supply gear drives the cam to rotate and drive the pump rod to slide and supply glue in the glue pumping cylinder. The amount of glue pumped can be controlled according to the rotation of the coating roller. The glue pumping cylinder is vertically slidably connected to the glue supply chamber. The height of the top of the glue supply cylinder can be adjusted. The amount of glue pumped at one time can be controlled by controlling the displacement of the pump rod in the glue pumping cylinder. The amount of glue supplied can be adjusted after the distance between the first glue baffle and the second glue baffle is adjusted, so that the amount of glue discharged from the overflow hole remains stable. A closed arc plate is installed on the side of the coating roller, so that the glue overflows from the opening of the closed arc plate and is applied to the packaging film. The end of the closed arc plate has a scraping effect on the glue residue on the surface of the coating roller. The scraped glue falls into the recycling tank and flows back through the recycling pipe connected to the end of the recycling tank. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an axial sectional view of the coating roller of the present invention; Figure 3 This is a radial cross-sectional view of the coating roller of the present invention; Figure 4 This is a diagram showing the connection between the second baffle plate and the hollow rotating ring of the present invention; Figure 5 This is a connection diagram of the outer rotating ring and the pump passage of the present invention; Figure 6 This is a cross-sectional view of the closed arc plate and the glue-applying roller of the present invention; In the diagram: 1. First telescopic rod; 11. First baffle plate; 2. Closed arc plate; 3. Recycling tank; 4. Glue supply chamber; 41. Inner glue supply pipe; 42. Outer glue supply pipe; 5. Glue supply gear; 6. Second telescopic rod; 61. Second baffle plate; 7. Glue pump cylinder; 71. Limiting rod; 72. Fixing sleeve; 73. Fixing bolt; 74. Connecting rod; 75. Cam; 8. Hollow rotating ring; 81. Inner rotating ring; 82. Outer rotating ring; 9. Glue coating roller; 91. Drive gear; 92. Shaft; 93. Glue overflow hole; 94. Gear ring; 95. Connecting rod. Detailed Implementation Example 1

[0018] like Figure 1-2As shown, a coating device for packaging film processing includes a coating roller 9, which is hollow inside. An overflow hole 93 is provided on the side of the coating roller 9. One end of the coating roller 9 is rotatably connected to a glue supply mechanism. The glue supply mechanism includes a glue supply chamber 4, and the interior of the coating roller 9 communicates with the glue supply chamber 4. A first glue baffle 11 and a second glue baffle 61 are slidably connected to the inner wall of the coating roller 9 and are driven by an adjusting mechanism. The adjusting mechanism includes a first telescopic rod 1 connected to one end of the coating roller 9. The inner end of the movable rod in the first telescopic rod 1 is connected to... The first baffle plate 11 is fixedly connected to the other end of the glue-applying roller 9, and the second telescopic rod 6 is connected to the other end of the second telescopic rod 6. The inner end of the movable rod in the second telescopic rod 6 is fixedly connected to the second baffle plate 61. The side of the second baffle plate 61 is provided with a glue supply hole. The glue supply hole of the second baffle plate 61 is connected to the hollow rotating ring 8 through a glue supply pipe. The hollow rotating ring is connected to the glue supply cavity 4. The right end of the glue-applying roller 9 is provided with an annular through hole. The hollow rotating ring 8 includes an inner rotating ring 81 rotatably connected to the inner side of the annular through hole. The glue supply pipe is connected to the inner rotating ring 81. An outer rotating ring 82 is connected to the outer side of the annular through hole. The outer rotating ring 82 is connected to the glue supply cavity 4.

[0019] The shaft 92 at the end of the coating roller 9 is rotatably connected to the bearing of the existing coating equipment frame. It works in conjunction with the packaging film guide roller to apply glue. During the coating process, the guide roller feeds the packaging film to the area below the coating roller 9. The coating roller 9 and the guide roller rotate synchronously, and at the same time, the glue supply mechanism supplies glue into the guide roller. The glue is discharged from the overflow hole 93 on the surface of the coating roller 9 and applied to the packaging film. When the width of the packaging film changes, the first telescopic rod 1 drives the first glue baffle 11 to move, and the second telescopic rod 6 drives the second glue baffle 61 to move. The first glue baffle 11, the second glue baffle 61, and the hollow coating roller 9 together form a cavity to contain the glue. The glue overflows from the overflow hole 93 on the side of the cavity and is applied to the coating film of a specific width or within a specific width range on the coating film. It can achieve positioning and gluing. The right end of the gluing roller 9 is connected to the hollow rotating ring 8. The inner side of the hollow rotating ring 8 is connected to the left side of the second glue baffle 61 through a spiral glue supply tube. The outer side of the hollow rotating ring 8 is connected to the glue supply mechanism through a glue supply tube. The hollow rotating ring 8 can rotate relative to the gluing roller 9, so it can stably supply glue during the rotation of the gluing roller 9. The hollow rotating ring 8 is divided into an inner rotating ring 81 and an outer rotating ring 82. The inner rotating ring 81 is connected to the second glue baffle 61 through the inner glue supply tube 41 spirally wound inside the gluing roller 9. The gluing roller 9 and the shaft 92 are connected through the annular through hole between the inner rotating ring 81 and the outer rotating ring 82 by a connecting rod 95. The outer rotating ring 82 is connected to the glue supply cavity 4 through the outer glue supply tube. The spiral inner glue supply tube can adaptably expand and contract when the position of the second glue baffle 61 changes. Example 2

[0020] like Figure 1-5As shown, a coating device for packaging film processing includes a coating roller 9, which is hollow inside. An overflow hole 93 is provided on the side of the coating roller 9. One end of the coating roller 9 is rotatably connected to a glue supply mechanism, which includes a glue supply chamber 4. The interior of the coating roller 9 communicates with the glue supply chamber 4. A first baffle plate 11 and a second baffle plate 61 are slidably connected to the inner wall of the coating roller 9 and are driven by an adjusting mechanism. A toothed ring 94 is connected to the right end of the coating roller 9, and the toothed ring 94 is connected to the glue supply mechanism in the glue supply chamber 4. The transmission connection includes a glue supply mechanism comprising a glue supply gear 5 meshing with a gear ring 94, a glue supply gear 5 being coaxially and fixedly connected to a cam 75, a cam 75 being rotatably connected to a connecting rod 74, and a connecting rod 74 being rotatably connected to a pump rod sliding inside a glue pump cylinder 7; the bottom end of the glue pump cylinder 7 is connected to a glue coating roller 9, the top end of the glue pump cylinder 7 is open, the top end of the glue pump cylinder 7 is connected to a ring array of limiting rods 71, the pump rod is fixedly connected to a piston, and the bottom end of the piston is an arc surface; the glue pump cylinder 7 is slidably and sealed to the bottom of the glue supply chamber 4, and the glue pump cylinder 7 is connected to a measuring rod fixed to the bottom of the glue supply chamber 4 by a fixing bolt 73.

[0021] The drive gear 91 connected to the left end of the glue-applying roller 9 is connected to an external drive device to drive the glue-applying roller 9 to rotate. During the rotation of the glue-applying roller 9, the gear ring 94 connected to the right end rotates, which drives the glue supply gear 5 to rotate. The glue supply gear 5 is coaxially and fixedly connected to the cam 75, thus enabling the cam 75 in the glue supply chamber 4 to rotate. The cam 75 drives the connecting rod 74 to move, which in turn drives the pump rod sliding inside the glue pump cylinder 7 to move. When the pump rod moves upward to the position between the limit rods 71, glue flows into the glue pump cylinder 7. After the pump rod falls again, the glue in the glue pump cylinder 7 is sent into the glue-applying roller 9 through the glue supply pipe. Furthermore, the single pumping volume is positively correlated with the stroke within the pump cylinder 7 of the pump rod box. Therefore, the pump cylinder 7 is set to slide vertically relative to the glue supply chamber 4. By adjusting the height of the part of the pump cylinder 7 located inside the glue supply chamber 4, the displacement between the pump rod and the pump cylinder 7 is controlled, thereby controlling the amount of glue pumped. When the width of the packaging film coating is large, the glue consumption is large, so a large single pumping volume is required. When the width of the packaging film coating is small, the glue consumption is small, and the pump cylinder 7 can be pulled down. After adjusting the height of the pump cylinder 7, the pump cylinder 7 is fixed relative to the fixing sleeve 72 by the fixing bolt 73. Example 3

[0022] like Figure 1-6As shown, a coating device for packaging film processing includes a coating roller 9, which is hollow inside. An overflow hole 93 is provided on the side of the coating roller 9. One end of the coating roller 9 is rotatably connected to a glue supply mechanism. The glue supply mechanism includes a glue supply cavity 4, and the inside of the coating roller 9 is connected to the glue supply cavity 4. A first glue baffle 11 and a second glue baffle 61 are slidably connected to the inner wall of the coating roller 9. The first glue baffle 11 and the second glue baffle 61 are connected to an adjustment mechanism. A closed arc plate 2 is attached to the outside of the coating roller 9. An opening is provided on the side of the closed arc plate 2, which is parallel to the axis of the coating roller 9. The edge of the opening of the closed arc plate 2 is a bevel tangent to the coating roller 9. A recycling trough 3 is provided below the edge of the opening of the closed arc plate 2.

[0023] A closed arc plate 2 is provided on the side of the coating roller 9 and is fixed relative to the equipment. When the coating roller 9 rotates, the glue only overflows from the overflow hole 93 at the opening of the closed arc plate 2 and is applied to the packaging film. During packaging, the glue residue on the surface of the coating roller 9 after coating is scraped off by the edge of the closed arc plate 2 when it passes the left end of the closed arc plate 2. The scraped glue accumulates in the closed arc plate 2 and falls into the recycling tank 3. The right end of the recycling tank 3 is connected to the recycling pipe, and the glue is recycled through the recycling pipe.

Claims

1. A coating apparatus for packaging film processing, characterized in that, It includes a glue-applying roller (9), which is hollow inside. An overflow hole (93) is provided on the side of the glue-applying roller (9). One end of the glue-applying roller (9) is rotatably connected to a glue-supplying mechanism. The glue-supplying mechanism includes a glue-supplying chamber (4). The inside of the glue-applying roller (9) is connected to the glue-supplying chamber (4). A first glue-blocking plate (11) and a second glue-blocking plate (61) are slidably connected to the inner wall of the glue-applying roller (9). The first glue-blocking plate (11) and the second glue-blocking plate (61) are connected to the adjustment mechanism. The adjustment mechanism includes a first telescopic rod (1) connected to one end of the coating roller (9), the inner end of the movable rod in the first telescopic rod (1) is fixedly connected to the first baffle plate (11), and a second telescopic rod (6) is connected to the other end of the coating roller (9), the inner end of the movable rod in the second telescopic rod (6) is fixedly connected to the second baffle plate (61). The second baffle plate (61) has a glue supply hole on its side. The glue supply hole of the second baffle plate (61) is connected to the hollow rotating ring (8) through a glue supply pipe. The hollow rotating ring is connected to the glue supply cavity (4). The right end of the coating roller (9) is provided with an annular through hole. The hollow rotating ring (8) includes an inner rotating ring (81) rotatably connected to the inner side of the annular through hole. The glue supply pipe is connected to the inner rotating ring (81) and is located outside the annular through hole and connected to the outer rotating ring (82). The outer rotating ring (82) is connected to the glue supply chamber (4). The right end of the coating roller (9) is connected to a toothed ring (94), and the toothed ring (94) is connected to the glue supply mechanism connected to the glue supply chamber (4). The glue supply mechanism includes a glue supply gear (5) that meshes with the toothed ring (94). The glue supply gear (5) is coaxially fixedly connected to the cam (75). The cam (75) is rotatably connected to the connecting rod (74). The connecting rod (74) is rotatably connected to the pump rod that slides inside the glue pump cylinder (7). The bottom end of the glue pump cylinder (7) is connected to the glue coating roller (9), the top end of the glue pump cylinder (7) is open, the top end of the glue pump cylinder (7) is connected to the limiting rod (71) of the annular array, the pump rod is fixedly connected to the piston, and the bottom end of the piston is an arc surface; The pump cylinder (7) is slidably connected to the bottom of the glue supply chamber (4), and the pump cylinder (7) is connected to the measuring rod fixed at the bottom of the glue supply chamber (4) by fixing bolts (73).

2. The adhesive coating device for packaging film processing according to claim 1, characterized in that, The left end of the coating roller (9) is connected to the drive gear (91). The drive gear (91) is hollow in the middle and the side of the drive gear (91) is fixedly connected to the coating roller (9) through a connecting ring.

3. The adhesive coating device for packaging film processing according to claim 1, characterized in that, A closed arc plate (2) is attached to the outside of the coating roller (9), and an opening is provided on the side of the closed arc plate (2) that is parallel to the axis of the coating roller (9).

4. The adhesive coating device for packaging film processing according to claim 3, characterized in that, The opening edge of the closed arc plate (2) is an inclined surface tangent to the glue coating roller (9), and a recycling trough (3) is provided below the opening edge of the closed arc plate (2).

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