Double-layer roll forming device, adhesive control method and eco-friendly bag forming machine

Abstract

The present invention aims to disclose a double-layer roll-forming bag device, a gluing control method, and an eco-friendly bag forming machine, relating to the field of eco-friendly bag forming technology. It includes a frame, an outer unwinding assembly, an inner unwinding assembly, and a gluing assembly. The outer unwinding assembly includes a first unwinding shaft, several first guide rollers, and a composite roller. The inner unwinding assembly includes a second unwinding shaft, several second guide rollers, a tensioning assembly, and a gluing roller. The inner unwinding assembly conveys the inner layer material from above the frame, and the outer unwinding assembly conveys the outer layer material from below the frame. The gluing assembly includes a glue tray, a glue transfer roller, a glue leveling roller, and a gluing roller. The gluing roller has gluing and non-gluing areas. The beneficial effects are: by setting gluing and non-gluing areas on the gluing roller, the inner layer material is glued at intervals. The difference between V1 and V3 controls the gluing interval of the inner layer material. Intermittent gluing reduces the amount of glue used and lowers the forming cost of eco-friendly bags.

Description

Technical Field

[0001] This invention relates to the field of eco-friendly bag forming technology, and in particular to a double-layer roll forming device, an adhesive application control method, and an eco-friendly bag forming machine. Background Technology

[0002] Currently, double-layer eco-friendly bags are made by first laminating the outer and inner layers together before forming the bag. However, when laminating the outer and inner layers, all the laminated surfaces are covered with adhesive. This results in a large amount of adhesive being used, leading to high costs, and also causes environmental pollution.

[0003] Therefore, there is an urgent need to develop a double-layer roll forming device, an adhesive control method, and an environmentally friendly bag forming machine to overcome the shortcomings of existing technologies. Summary of the Invention

[0004] The purpose of this invention is to disclose a double-layer roll bag forming device, an adhesive application control method, and an eco-friendly bag forming machine, which aims to achieve adhesive application only at the opening and bottom of the eco-friendly bag through intermittent adhesive application, thereby significantly reducing the amount of adhesive used.

[0005] The first objective of this invention is to provide a double-layer roll-to-bag device.

[0006] The second objective of this invention is to provide a method for controlling the adhesive application of double-layer roll materials.

[0007] The third objective of this invention is to provide an eco-friendly bag forming machine.

[0008] To achieve the first objective mentioned above, the present invention provides a double-layer roll bag forming device, including a frame, an outer unwinding assembly, an inner unwinding assembly, and an adhesive application assembly;

[0009] The outer unwinding assembly includes a first unwinding shaft, a plurality of first guide rollers, and a composite roller;

[0010] The inner unwinding assembly includes a second unwinding shaft, a plurality of second guide rollers, a tensioning assembly and a bonding roller. The inner unwinding assembly conveys the inner layer material from above the frame, and the outer unwinding assembly conveys the outer layer material from below the frame.

[0011] The gluing assembly includes a glue tray, a glue transfer roller, a glue spreading roller, and a glue application roller. The glue application roller is provided with a glue application area and a non-glue application area, and the glue application area protrudes from the non-glue application area.

[0012] The inner layer material enters the composite roller after passing between the gluing roller and the bonding roller.

[0013] Preferably, the adhesive application area is rectangular.

[0014] Preferably, the gluing roller is driven by a servo motor, and the linear velocity of the gluing zone is equal to the linear velocity of the bonding roller.

[0015] Preferably, the linear velocity of the glue application zone is equal to the linear velocity of the glue-spreading roller.

[0016] Preferably, a first straight tooth and a second straight tooth are respectively provided on both sides of the bottom of the rubber disc;

[0017] The first support plate wall and the second support plate wall are respectively provided on both sides of the rubber tray.

[0018] A screw is provided in the first support plate wall, a first connecting rod is provided between the first support plate wall and the second support plate wall, a first helical tooth is provided at the end of the first connecting rod, and a first gear and a second gear are also provided in the first connecting rod.

[0019] The screw meshes with the first helical tooth, the first gear meshes with the first spur tooth, and the second gear meshes with the second spur tooth;

[0020] Rotating the screw drives the first gear and the second gear to rotate via the first helical gear, thereby driving the rubber disc to move up and down.

[0021] Preferably, a first moving block and a second moving block are respectively provided at both ends of the glue transfer roller, the first moving block is supported on the first support plate wall, and the second moving block is supported on the second support plate wall;

[0022] A first push rod is provided on one side of the first movable block, and a second helical tooth is provided at the end of the first push rod; a second push rod is provided on one side of the second movable block, and a third helical tooth is provided at the end of the second push rod.

[0023] A second connecting rod is provided between the first support plate wall and the second support plate wall. A fourth helical tooth and a fifth helical tooth are respectively provided at both ends of the second connecting rod. The fourth helical tooth meshes with the second helical tooth, and the fifth helical tooth meshes with the third helical tooth.

[0024] Rotate the second connecting rod to drive the glue transfer roller to approach or move away from the glue spreading roller.

[0025] Preferably, the tensioning assembly includes a fixed shaft and rotating parts respectively disposed at both ends of the fixed shaft, and a fixing part is disposed between the rotating parts and the fixed shaft;

[0026] A tensioning roller is provided at one end of the rotating component, and a lead screw is provided at the other end of the rotating component. The support point of the lead screw is the end of the fixed component.

[0027] Based on the same inventive principle, in order to achieve the second inventive objective mentioned above, this invention provides a method for controlling the gluing of double-layer roll material, wherein the inner layer material is glued when passing between the gluing roller and the bonding roller;

[0028] The gluing roller is provided with a gluing area and a non-gluing area, wherein the gluing area protrudes from the non-gluing area;

[0029] The glue-applying roller is driven by a servo motor, and the glue-applying roller is set with a glue-applying speed V1, a glue-uniforming speed V2, and a non-glue-applying zone speed V3.

[0030] V1 is equal to the speed of the bonding roller, and V2 is equal to the speed of the leveling roller;

[0031] V3 ≠ V1, V3 ≠ V2.

[0032] Preferably, the spacing of the adhesive layer material is controlled by the difference between V1 and V3.

[0033] Based on the same inventive principle, in order to achieve the third inventive objective mentioned above, the present invention provides an environmentally friendly bag forming machine, including a double-layer roll forming device as described in the first invention.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] By setting up gluing and non-gluing zones on the gluing roller, the inner layer material is glued intermittently instead of continuously. Intermittent gluing reduces the amount of glue used and lowers the molding cost of the eco-friendly bag. In addition, by controlling the gluing interval of the inner layer material through the difference between V1 and V3, gluing is only performed at both ends of the eco-friendly bag, which significantly reduces the amount of glue used. Attached Figure Description

[0036] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is a three-dimensional structural diagram of the double-layer roll-to-bag forming device of the present invention.

[0038] Figure 2 This is a three-dimensional structural diagram of the double-layer roll-to-bag forming device of the present invention.

[0039] Figure 3 This is a schematic diagram of the adhesive application area for the inner layer material of this invention.

[0040] Figure 4 This is a side view of the adhesive roller of the present invention.

[0041] Figure 5 This is a three-dimensional structural diagram of the adhesive application component of the present invention.

[0042] Figure 6 This is a three-dimensional structural diagram of the tensioning component and the gluing component of the present invention.

[0043] The components include: 1. Frame; 2. Outer unwinding assembly; 21. First unwinding shaft; 22. First guide roller; 23. Composite roller; 3. Inner unwinding assembly; 31. Second unwinding shaft; 32. Second guide roller; 33. Tensioning assembly; 331. Fixed shaft; 332. Rotating component; 333. Fixed component; 334. Tensioning roller; 335. Lead screw; 34. Gluing roller; 4. Gluing assembly; 41. Glue tray; 411. First straight tooth; 412. Second straight tooth; 42. Glue transfer roller; 421. First moving block; 4 22. Second moving block; 423. First push rod; 424. Second helical tooth; 425. Second push rod; 426. Third helical tooth; 427. Second connecting rod; 428. Fourth helical tooth; 429. Fifth helical tooth; 43. Glue roller; 44. Glue roller; 441. Glue application area; 45. First support plate wall; 451. Screw; 452. First connecting rod; 453. First helical tooth; 454. First gear; 455. Second gear; 46. Second support plate wall; 5. Inner layer material; 6. Outer layer material. Detailed Implementation

[0044] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent changes or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0045] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0046] The specific implementation process of the present invention will be described below through several embodiments.

[0047] Example 1

[0048] See Figures 1 to 4 This embodiment discloses a specific implementation of a double-layer roll-to-bag device.

[0049] See Figures 1 to 4A double-layer roll bag forming device includes a frame 1, an outer unwinding assembly 2, an inner unwinding assembly 3, and a gluing assembly 4. The outer unwinding assembly 2 includes a first unwinding shaft 21, a plurality of first guide rollers 22, and a composite roller 23. The inner unwinding assembly 3 includes a second unwinding shaft 31, a plurality of second guide rollers 32, a tensioning assembly 33, and a gluing roller 34. The inner unwinding assembly 3 conveys the inner layer material 5 from above the frame 1, and the outer unwinding assembly 2 conveys the outer layer material 6 from below the frame 1. The gluing assembly 4 includes a glue tray 41, a glue transfer roller 42, a glue leveling roller 43, and a gluing roller 44. The gluing roller 44 is provided with a gluing area 441 and a non-gluing area, and the gluing area 441 protrudes from the non-gluing area. The inner layer material 5 passes between the gluing roller 44 and the gluing roller 34 and then enters the composite roller 23.

[0050] Specifically, the inner layer material 5 and the outer layer material 6 can be paper or film. Currently, when laminating the inner layer material 5 and the outer layer material 6 into a bag, adhesive is applied between them, resulting in high adhesive consumption and environmental unfriendliness. To overcome these drawbacks, see [link to relevant documentation]. Figure 3 and Figure 4 The gluing roller 44 is provided with a rectangular gluing area 441. In this embodiment, an intermittent gluing method is adopted, gluing is only applied to both ends of the eco-friendly bag to form a gluing area 51. The shape of the gluing area 51 is the same as that of the gluing area 441, which greatly reduces the amount of glue used and lowers the manufacturing cost of the eco-friendly bag. To achieve intermittent gluing, the gluing roller 44 is driven by a servo motor. The linear speed of the gluing area 441 is equal to the linear speed of the bonding roller 34, and the linear speed of the gluing area 441 is equal to that of the gluing roller 34. The linear speed of the gluing roller 43 is equal. Specifically, the rotation speed of the gluing roller 44 is controlled by a servo motor, so that the linear speed of the gluing roller 44 is constantly changing. However, it is necessary to ensure that the linear speed of the gluing area 441 is equal to the linear speed of the gluing roller 34 in order to apply glue accurately. By controlling the rotation speed of the gluing roller 44, each rotation of the gluing roller 44 achieves gluing on both ends of the inner layer material 5 of an eco-friendly bag. To improve the gluing efficiency, the linear speed during gluing is usually greater than the linear speed during non-gluing.

[0051] See Figure 5To facilitate cleaning of the rubber tray 41, a first straight tooth 411 and a second straight tooth 412 are respectively provided on both sides of the bottom of the rubber tray 41; a first support plate wall 45 and a second support plate wall 46 are also respectively provided on both sides of the rubber tray 41; a screw 451 is provided on the first support plate wall 45, and a first connecting rod 452 is provided between the first support plate wall 45 and the second support plate wall 46; a first helical tooth 453 is provided at the end of the first connecting rod 452, and a first gear 454 and a second gear 455 are also provided on the first connecting rod 452; the screw 451 meshes with the first helical tooth 453, and the first gear 454 meshes with the first helical tooth 455. The first gear 451 has a spur tooth 411, and the second gear 455 meshes with the second spur tooth 412. The screw 451 and the first helical tooth 453 are meshed at a 45-degree angle. Rotating the screw 451 drives the first helical tooth 453 to rotate, which in turn drives the first connecting rod 452 to rotate, thereby driving the first gear 454 and the second gear 455 to rotate. The first gear 454 drives the first spur tooth 411, and the second gear 455 drives the second spur tooth 412, thereby driving the rubber disc 41 to move up and down. When it is necessary to clean the rubber disc 41, the rubber disc 41 can be raised or lowered by turning the screw 451, which is convenient to operate.

[0052] See Figure 5 To adjust the distance between the transfer roller 42 and the evenly distributing roller 43, a first moving block 421 and a second moving block 422 are respectively provided at both ends of the transfer roller 42. The first moving block 421 is supported by the first support wall 45, and the second moving block 422 is supported by the second support wall 46. A first push rod 423 is provided on one side of the first moving block 421, and a second helical tooth 424 is provided at the end of the first push rod 423. A second push rod 425 is provided on one side of the second moving block 422, and a third helical tooth 426 is provided at the end of the second push rod 425. A second connecting rod 427 is provided between the first support wall 45 and the second support wall 46. The ends are respectively provided with a fourth helical tooth 428 and a fifth helical tooth 429. The fourth helical tooth 428 meshes with the second helical tooth 424, and the fifth helical tooth 429 meshes with the third helical tooth 426. The fourth helical tooth 428 and the second helical tooth 424 are engaged at a 45-degree angle, and the fifth helical tooth 429 and the third helical tooth 426 are engaged at a 45-degree angle. When the second connecting rod 427 is rotated, the fourth helical tooth 428 drives the second helical tooth 424 and drives the first moving block 421 to move through the first push rod 423. The fifth helical tooth 429 drives the third helical tooth 426 and drives the second moving block 422 to move through the second push rod 425. This allows the glue transfer roller 42 to approach or move away from the glue even roller 43, thereby achieving fine adjustment of the glue transfer amount.

[0053] See Figure 6To facilitate fine-tuning of the tensioning assembly, the tensioning assembly 33 includes a fixed shaft 331 and rotating parts 332 respectively disposed at both ends of the fixed shaft 331. A fixing part 333 is disposed between the rotating parts 332 and the fixed shaft 331. A tensioning roller 334 is disposed at one end of the rotating parts 332, and a lead screw 335 is disposed at the other end of the rotating parts 332. The support point of the lead screw 335 is the end of the fixing part 333. By turning the lead screw 335, the end of the rotating parts 332 can be pressed down or adjusted up, thereby causing the tensioning roller 334 to float and realizing the tension adjustment of the inner layer material 5.

[0054] Example 2

[0055] To achieve the intermittent gluing of Example 1, Example 2 discloses a specific implementation of a method for controlling the gluing of double-layer rolls.

[0056] A method for controlling the gluing of double-layer roll material involves applying glue to the inner layer material 4 as it passes between the gluing roller 44 and the bonding roller 34. The gluing roller 44 has a gluing area 441 and a non-gluing area, with the gluing area 441 protruding from the non-gluing area. The area of ​​the gluing roller 44 excluding the gluing area 441 is the non-gluing area. Because the non-gluing area is lower, it does not contact the inner layer material 5, and only the gluing area 441 is glued. To control the gluing interval, the gluing roller 44 is driven by a servo motor. The gluing roller 44 is configured with a gluing speed V1, a uniform gluing speed V2, and a non-gluing area speed V3. The gluing speed V1 is the linear velocity at the instant the gluing area 441 contacts the inner layer material 5, and the uniform gluing speed V2 is the linear velocity at the instant the gluing area 441 contacts the uniform gluing roller 43. Linear speed; to ensure stable gluing and even application, V1 is equal to the speed of the gluing roller 34, V2 is equal to the speed of the even application roller 43, and V3 ≠ V1 and V3 ≠ V2; to adapt to eco-friendly bags of different lengths, the gluing spacing of the inner layer material 5 is controlled by the difference between V1 and V3. Specifically, to improve gluing efficiency, V1 > V3. For each revolution of the gluing roller 44, the gluing area 441 contacts and applies gluing to the inner layer material 5 once. The linear speed V1 of the contacting gluing area 441 is faster, while the linear speed V3 of the non-gluing area of ​​the gluing roller 44 is slower. The gluing spacing of the inner layer material 5 is controlled by the difference between V1 and V3. When the eco-friendly bag body is longer, V3 is relatively slower, while when the eco-friendly bag body is shorter, V3 is relatively faster.

[0057] The double-layer roll adhesive control method disclosed in this embodiment has the same technical solution as that in Embodiment 1. Please refer to Embodiment 1 for details, which will not be repeated here.

[0058] Example 3

[0059] An eco-friendly bag forming machine includes a double-layer roll-to-bag forming device as described in Example 1. Specifically, see... Figure 1After the double-layer roll forming device completes the intermittent bonding of the inner layer material 5 and the outer layer material 6, it then undergoes processes such as forming into rolls and cutting to become environmentally friendly bags.

[0060] The environmentally friendly bag forming machine disclosed in this embodiment has the same technical solution as that in Embodiment 1. Please refer to Embodiment 1 for details, which will not be repeated here.

Claims

1. A double-layer roll-to-bag forming device, characterized in that, Includes frame, outer unwind assembly, inner unwind assembly and gluing assembly; The outer unwinding assembly includes a first unwinding shaft, a plurality of first guide rollers, and a composite roller; The inner unwinding assembly includes a second unwinding shaft, a plurality of second guide rollers, a tensioning assembly and a bonding roller. The inner unwinding assembly conveys the inner layer material from above the frame, and the outer unwinding assembly conveys the outer layer material from below the frame. The gluing assembly includes a glue tray, a glue transfer roller, a glue spreading roller, and a glue application roller. The glue application roller is provided with a glue application area and a non-glue application area, and the glue application area protrudes from the non-glue application area. The inner layer material enters the composite roller after passing between the gluing roller and the bonding roller; The gluing roller is driven by a servo motor, and the linear velocity V1 of the gluing zone is equal to the linear velocity of the bonding roller. The linear velocity V1 of the glue application zone is equal to the linear velocity V2 of the glue-spreading roller, and the linear velocity of the non-glue application zone is V3. V3≠V1, V3≠V2, V1>V3; When the inner and outer materials are laminated into a bag, the glue application interval of the inner material is controlled by the difference between V1 and V3. The glue application method is adopted. Each time the glue roller rotates, the two ends of the inner material of the bag are glued, forming a glue application area at both ends of the inner material. The shape of the glue application area is the same as the shape of the glue application area, and the glue application area is rectangular. The bottom sides of the rubber disc are respectively provided with a first straight tooth and a second straight tooth; The two ends of the transfer roller are respectively provided with a first moving block and a second moving block; The tensioning assembly includes a fixed shaft and rotating parts respectively disposed at both ends of the fixed shaft.

2. The double-layer roll-to-bag forming device as described in claim 1, characterized in that, The first support plate wall and the second support plate wall are respectively provided on both sides of the rubber tray. A screw is provided in the first support plate wall, a first connecting rod is provided between the first support plate wall and the second support plate wall, a first helical tooth is provided at the end of the first connecting rod, and a first gear and a second gear are also provided in the first connecting rod. The screw meshes with the first helical tooth, the first gear meshes with the first spur tooth, and the second gear meshes with the second spur tooth; Rotating the screw drives the first gear and the second gear to rotate via the first helical gear, thereby driving the rubber disc to move up and down.

3. The double-layer roll-forming bag device as described in claim 2, characterized in that, The first movable block is supported on the first support plate wall, and the second movable block is supported on the second support plate wall; A first push rod is provided on one side of the first movable block, and a second helical tooth is provided at the end of the first push rod; a second push rod is provided on one side of the second movable block, and a third helical tooth is provided at the end of the second push rod. A second connecting rod is provided between the first support plate wall and the second support plate wall. A fourth helical tooth and a fifth helical tooth are respectively provided at both ends of the second connecting rod. The fourth helical tooth meshes with the second helical tooth, and the fifth helical tooth meshes with the third helical tooth. Rotate the second connecting rod to drive the glue transfer roller to approach or move away from the glue spreading roller.

4. The double-layer roll-forming bag apparatus according to any one of claims 1-3, characterized in that, A fixing element is provided between the rotating component and the fixed shaft; A tensioning roller is provided at one end of the rotating component, and a lead screw is provided at the other end of the rotating component. The support point of the lead screw is the end of the fixed component.

5. A method for controlling the adhesive application of double-layer roll materials, characterized in that, The inner layer material is glued as it passes between the gluing roller and the bonding roller; The gluing roller is provided with a gluing area and a non-gluing area, wherein the gluing area protrudes from the non-gluing area; The gluing roller is driven by a servo motor, and the gluing roller is configured with a gluing speed V1, a uniform gluing speed V2, and a non-gluing zone speed V3. V1 is equal to the speed of the bonding roller, and V2 is equal to the speed of the leveling roller; V3 ≠ V1, V3 ≠ V2, V1 > V3; When the inner and outer layer materials are laminated into a bag, the glue application interval of the inner layer material is controlled by the difference between V1 and V3. The glue application method is adopted. Each time the glue roller rotates, the two ends of the inner layer material of the bag are glued, forming a glue application area at both ends of the inner layer material. The shape of the glue application area is the same as the shape of the glue application area, and the glue application area is rectangular.

6. An eco-friendly bag forming machine, characterized in that, Includes the double-layer roll forming bag apparatus as described in any one of claims 1-4.

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