Liquid bag film loading and conveying device

Abstract

The application discloses a kind of liquid bag film loading conveying devices, belong to infusion bag production equipment technical field.The film coating device of the present application includes rack and the main material roller sequentially arranged in rack;Tension control mechanism, including lifting piece and multiple with film conveying direction equidistant arrangement roll group, each described roll group includes up and down misregistration fixed roller and adjusting roller, the fixed roller with the rack is fixed, the lifting piece can drive the adjusting roller with the direction perpendicular to film conveying direction displacement, and displacement amplitude and the rotation torque of the main material roller are matched by electric control adjustment;Mould closing mechanism, to the multiple described film is flattened after mould closing;Edge tracking mechanism, including bearing table, double-shaft displacement piece, first pressing die set, second pressing die set, the film after mould closing is supported by the bearing table, and edge tracking is carried out by first pressing die set and the second pressing die set, the present application can eliminate film transmission process tension change and film wrinkle.

Description

Technical Field

[0001] This invention relates to the field of infusion bag production equipment technology, and more specifically, to a liquid bag film feeding and conveying device. Background Technology

[0002] For non-PVC flexible bag manufacturing and filling processes, the general steps include: feeding multi-layer co-extruded infusion film into a bag-making machine; heat-sealing three sides (top, bottom, and sides) of two layers of film by heating the mold, and simultaneously welding the filling and infusion interfaces (such as polypropylene interfaces) onto the film. Then, filling and sealing are performed, and finally, the sealed infusion bag is sent to a high-temperature sterilization cabinet for terminal sterilization to ensure product sterility.

[0003] However, in actual production, the following problems are likely to occur during the molding process of the infusion bag film: 1. Traditional equipment uses a single motor to drive a roller group to tension and feed the upper and lower layers of film before the infusion bag film is molded. However, the amount of film material on the main material roller will decrease, which indirectly causes greater resistance of the film on the subsequent roller group. This can easily lead to problems such as tearing or being unable to pull the film during subsequent mold closing. 2. After the infusion bag film is molded, the film may bend or wrinkle during transportation, which indirectly affects the shape of the finished bag.

[0004] To address these issues, we propose a liquid bag film feeding and conveying device. Summary of the Invention

[0005] In view of the above-mentioned problems in the prior art, the purpose of the present invention is to provide a liquid bag film feeding and conveying device.

[0006] To solve the above problems, the technical solution adopted by the present invention is as follows: A liquid bag film feeding and conveying device includes: a frame and components sequentially arranged within the frame along the film conveying direction. The main material roller is electrically controlled to feed the double-layer film; this is achieved through a drive. The tension control mechanism includes a lifting component and multiple roll groups equidistantly arranged in the film conveying direction. Each roll group includes a fixed roll and an adjusting roll that are staggered vertically. The fixed roll is fixed to the frame. The lifting component can drive the adjusting roll to move in a direction perpendicular to the film conveying direction, and the displacement amplitude is matched with the rotation torque of the main material roll through electronic control adjustment. A mold closing mechanism is used to flatten and close the multilayer film. The edge-tracing mechanism includes a support platform, a dual-axis shifting component, a first pressing module, and a second pressing module. The support platform is horizontally fixed inside the frame. The film after molding is supported by the support platform and passes through the first pressing module and the second pressing module in sequence. The second pressing module is fixed to the frame. The dual-axis shifting component can drive the first pressing module to shift bidirectionally in the plane corresponding to the film.

[0007] Furthermore, a positioning roller is provided between the main material roller and the tension control mechanism. The two ends of the positioning roller are fixed inside the frame. A first cylinder is fixed above the positioning roller on the frame. The output direction of the first cylinder is perpendicular to the film conveying direction. A first pressure plate is fixed at the output end of the first cylinder to cover the positioning roller.

[0008] Furthermore, the lifting component includes a height plate, a lifting platform, and a drive sprocket. The height plate is vertically fixed inside the frame, and the height plate has adjustment slots that correspond one-to-one with multiple vertical adjustment rollers. The lifting platform is slidably connected inside the adjustment slots and is driven to lift and lower via the drive sprocket.

[0009] Furthermore, the roller assembly comprises at least four sets.

[0010] Furthermore, the mold clamping mechanism includes a guide roller, a mold clamping table, and a mold clamping roller. The mold clamping table has a horizontal inner cavity with a thickness corresponding to the film thickness. A manual adjustment component is fixed at the bottom of the mold clamping table to move the film in the inner cavity in the film width direction. The mold clamping roller includes two rollers arranged vertically opposite each other. Both mold clamping rollers are fixed to the frame. After being guided by the guide roller, the film passes through the inner cavity and between the two mold clamping rollers in sequence and covers the top surface of the support platform.

[0011] Furthermore, the manual adjustment component includes a slide rail, an adjusting screw, and a nut seat. The slide rail is parallel to the width direction of the film. The adjusting screw is rotatably connected to the frame. The nut seat is threadedly engaged with the adjusting screw. The center of the bottom surface of the mold closing table is fixed to the top surface of the nut seat.

[0012] Furthermore, the support platform consists of multiple thin tubes arranged at equal intervals along the width of the film. Both ends of the multiple thin tubes are bent and embedded with connecting plates, and are fixed to the bracket through the connecting plates.

[0013] Furthermore, a spot weld is provided between the mold closing roller and the first pressing module. The spot weld includes a second cylinder and an electric heating rod. The second cylinder is fixed to the top of the support platform through a connecting platform. The output of the second cylinder is perpendicular to the top surface of the support platform. The heating rod is vertically fixed to the output end of the second cylinder and located between the gaps of the thin tubes.

[0014] Further, the first pressing module includes a third cylinder, a height platform, a third pressure platform, and a base platform. The third cylinder is fixed to the top of the height platform, and the output end of the third cylinder is fixedly connected to the third pressure platform. The base platform is arranged opposite to the third pressure platform and fixed to the height platform. The base platform has tube grooves corresponding to the thin tubes one by one, and each thin tube is exposed on the top surface of the tube groove. The output direction of the third cylinder is perpendicular to the top surface of the support platform. The second pressing module includes a fourth cylinder and a discharge roller. The output direction of the fourth cylinder is perpendicular to the top surface of the support platform. The discharge roller is fixed to the frame. The output end of the fourth cylinder is fixed with a fourth pressure platform to cover the discharge roller.

[0015] Furthermore, the biaxial shifting component drives the first pressing module to shift in the width and length directions of the film, and the shifting range can cover the width and length of the support platform.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention utilizes four sets of vertically staggered rollers to unload the film feeding process, reduce the transmission resistance between the main material roller and the mold closing mechanism, and uses a lifting component that can move up and down to drive the entire adjusting roller to move. By using electronic control adjustment, the displacement amplitude is matched with the motor output torque of the main material roller, ensuring that the tension force tends to be stable during the film mold closing and transmission process. (2) The present invention utilizes the spot welding of heating rods to perform initial heat shrinking on the film after molding. The film is heated and tightened, which can cover more tightly and facilitate subsequent edge displacement. (3) The present invention utilizes the pressing of the fourth pressing table and the discharge roller to achieve film positioning in the edge-aligning process, and then uses the biaxial shifting component to drive the first pressing module to perform bidirectional shifting, so as to eliminate different wrinkles in the width and length directions of the film and improve the subsequent infusion bag finished product process. Attached Figure Description

[0017] Figure 1 This is an isometric structural diagram of the coating device in this invention; Figure 2 This is a front view of the coating device in this invention; Figure 3 This is a rear view of the coating device in this invention; Figure 4This is a three-dimensional structural diagram of the coating device in this invention; Figure 5 In this invention Figure 4 A magnified view of a portion of point A; Figure 6 In this invention Figure 4 A magnified view of the area at point B; Figure 7 A schematic diagram of the manual adjustment component of the coating device in this invention.

[0018] In the diagram: 1. Frame; 2. Main material roller; 21. Positioning roller; 22. First cylinder; 23. First pressure table; 3. Tension control mechanism; 31. Lifting component; 311. Height plate; 312. Lifting table; 313. Drive sprocket; 314. Adjusting groove; 32. Roller assembly; 321. Fixed roller; 322. Adjusting roller; 4. Mold closing mechanism; 41. Guide roller; 42. Mold closing table; 43. Mold closing roller; 44. Inner cavity; 45. Manual adjustment component; 451. Slide rail; 52. Adjusting screw; 453. Nut seat; 5. Edge-tracking mechanism; 51. Bearing platform; 511. Thin tube; 512. Connecting plate; 52. Dual-axis shifting component; 53. First pressing module; 531. Third cylinder; 532. Height platform; 533. Third pressing platform; 534. Base platform; 535. Tube groove; 54. Second pressing module; 541. Fourth cylinder; 542. Discharge roller; 543. Fourth pressing platform; 6. Welded component; 61. Second cylinder; 62. Heating rod. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments.

[0020] like Figures 1-6 As shown, in this embodiment, a liquid bag film feeding and conveying device includes: a frame 1 and a main material roller 2, a tension control mechanism 3, a mold closing mechanism 4, and an edge-tracking mechanism 5 sequentially arranged in the frame 1 along the film conveying direction. The tension control mechanism 3 automatically controls the film tension to prevent the film tension from being too tight or too loose, which would affect subsequent mold closing. After mold closing, the edge-tracking mechanism 5 automatically tracks the edges to prevent wrinkles from appearing after mold closing, which would affect the finished product process of the infusion bag. Each structure in the lamination production line will be described separately below.

[0021] For the main material roller 2, it is electrically controlled to rotate and feed the multilayer film, and the drive achieves the following: Figure 2 As shown, a servo-controlled motor is installed inside the corresponding housing to provide the torque required for the feeding process of the main material roller 2.

[0022] For tension control mechanism 3, such as Figures 1-5As shown, it includes a lifting component 31 and multiple roll groups 32 equidistantly arranged in the film conveying direction. Each roll group 32 includes a fixed roller 321 and an adjusting roller 322 that are staggered vertically. The fixed roller 321 is fixed to the frame 1. The lifting component 31 can drive the adjusting roller 322 to move in a direction perpendicular to the film conveying direction, and the displacement amplitude is matched with the rotation torque of the main material roller 2 through electronic control adjustment.

[0023] In this embodiment, the roller group 32 includes four groups. It can be seen that the present invention utilizes four vertically staggered roller groups 32 to relieve stress during the film feeding process, reducing the transmission resistance between the main material roller 2 and the mold closing mechanism 4. Furthermore, the lifting component 31, capable of vertical displacement, drives the entire adjusting roller 322 to shift position. Electronic control adjustment is used to match the shift amplitude with the motor output torque of the main material roller 2. When there is a large amount of material on the main material roller 2, the corresponding motor output torque is relatively small. At this time, the film on the roller group 32 is prone to loosening. The lifting component 31 can be used to drive the adjusting roller 322 to shift, increasing the axial distance between the adjusting roller 322 and the fixed roller 321, indirectly increasing the film's transport distance and ensuring normal film tension, and vice versa.

[0024] Similarly, a positioning roller 21 is also provided between the main material roller 2 and the tension control mechanism 3. Both ends of the positioning roller 21 are fixed inside the frame 1. A first cylinder 22 is also fixed above the positioning roller 21 on the frame 1. The output direction of the first cylinder 22 is perpendicular to the film conveying direction. A first pressure plate 23 is fixed to the output end of the first cylinder 22 to press against the positioning roller 21. During actual tension adjustment, the film on the positioning roller 21 is first pressed down using the first pressure plate 23, and then the tension is adjusted to avoid interference.

[0025] As for the implementation of lifting and shifting, such as Figure 5 As shown, in this embodiment, the lifting component 31 includes a height plate 311, a lifting platform 312, and a drive sprocket 313. The height plate 311 is vertically fixed inside the frame 1. The height plate 311 has multiple vertical adjustment slots 314 that correspond one-to-one with the adjustment rollers 322. The lifting platform 312 is slidably connected in the adjustment slots 314 and is driven to lift by the drive sprocket 313.

[0026] The mold-closing mechanism 4 is used to flatten and close the multi-layered film. It actually includes a guide roller 41, a mold-closing table 42, and mold-closing rollers 43. The mold-closing table 42 has a horizontal inner cavity 44, the thickness of which corresponds to the film thickness. A manual adjustment component 45 is fixed to the bottom of the mold-closing table 42, which is used to move the film within the inner cavity 44 in the film width direction. Two mold-closing rollers 43 are arranged vertically opposite each other. Both mold-closing rollers 43 are fixed to the frame 1. After being guided by the guide roller 41, the film passes sequentially through the inner cavity 44 and between the two mold-closing rollers 43, and covers the top surface of the support platform 51.

[0027] The film can be flattened by the inner cavity 44 of the mold closing table 42, which facilitates the subsequent mold closing between the two layers of film. The flattened film can also be aligned in the width direction of the film using the manual adjustment component 45 to avoid misalignment. The distance between the two mold closing rollers 43 is fixed to close the film and send the closed film to the support table 51.

[0028] In this embodiment, the adjustment of the mold clamping table 42 is achieved as follows: Figure 7 As shown, the manual adjustment component 45 includes a slide rail 451, an adjusting screw 452, and a nut seat 453. The slide rail 451 is parallel to the width direction of the film. The adjusting screw 452 is rotatably connected to the frame 1. The nut seat 453 is threadedly engaged with the adjusting screw 452. The center of the bottom surface of the mold closing table 42 is fixed to the top surface of the nut seat 453. Under the threaded action of the adjusting screw 452 and the limiting action of the slide rail 451, the nut seat 453 can be moved in the width direction of the film to meet the edge alignment requirements before the film is molded. After actual edge alignment, no further adjustment is needed to avoid misalignment.

[0029] In the actual design, the support platform 51 consists of multiple thin tubes 511 arranged equidistantly along the width of the film. Both ends of each thin tube 511 are bent and embedded with connecting plates 512, and are fixed to the bracket through the connecting plates 512. A spot weld is also provided between the mold closing roller 43 and the first pressing module 53. The spot weld includes a second cylinder 61 and an electrically heated rod. The second cylinder 61 is fixed to the top of the support platform 51 via the connecting platform, and its output is perpendicular to the top surface of the support platform 51. The heating rod is vertically fixed to the output end of the second cylinder 61 and located between the gaps in the arrangement of the thin tubes 511.

[0030] By using the spot welding of the heating rod, the film after mold closing can be initially heat-shrinked. The film is heated and tightened, which can close more tightly and facilitate subsequent edge displacement.

[0031] As for the final tracking mechanism 5, such as Figures 1-6As shown, it includes a support platform 51, a biaxial shifting component 52, a first pressing module 53, and a second pressing module 54. The support platform 51 is horizontally fixed inside the frame 1. The film after molding is supported by the support platform 51 and passes through the first pressing module 53 and the second pressing module 54 in sequence. The second pressing module 54 is fixed to the frame 1. The biaxial shifting component 52 can drive the first pressing module 53 to move bidirectionally in the plane corresponding to the film.

[0032] For bilateral compression, such as Figure 3 and Figure 6 As shown, the first pressing module 53 includes a third cylinder 531, a height platform 532, a third pressing platform 533, and a base platform 534. The third cylinder 531 is fixed to the top of the height platform 532, and the output end of the third cylinder 531 is fixedly connected to the third pressing platform 533. The base platform 534 is arranged opposite to the third pressing platform 533 and fixed to the height platform 532. The base platform 534 has a tube groove 535 corresponding to each of the thin tubes 511. Each thin tube 511 is exposed on the top surface of the tube groove 535. The output direction of the third cylinder 531 is perpendicular to the top surface of the support platform 51. The second pressing module 54 includes a fourth cylinder 541 and a discharge roller 542. The output direction of the fourth cylinder 541 is perpendicular to the top surface of the support platform 51. The discharge roller 542 is fixed to the frame 1. The output end of the fourth cylinder 541 is fixed with the fourth pressing platform 543 to cover the discharge roller 542.

[0033] The film can be positioned by the pressure of the fourth pressure table 543 and the discharge roller 542. Then, the first pressing module 53 is driven by the dual-axis shifting component to perform bidirectional shifting, eliminating different wrinkles in the width and length directions of the film. The elimination process is carried out by the third cylinder 531 driving the third pressure table 533 and multiple thin tubes 511 to press. The film placed on the thin tubes 511 can be easily moved.

[0034] Correspondingly, the biaxial shifting member 52 drives the first pressing module 53 to shift in the width and length directions of the film, and the shifting range can cover the width and length of the support platform 51. This ensures that every wrinkle on the support platform 51 can be eliminated. The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A liquid bag film feeding and conveying device, characterized in that, include: The frame and the components arranged sequentially within the frame along the film conveying direction. Main material roller, electrically controlled to rotate to feed multilayer films; The tension control mechanism includes a lifting component and multiple roll groups equidistantly arranged in the film conveying direction. Each roll group includes a fixed roll and an adjusting roll that are staggered vertically. The fixed roll is fixed to the frame. The lifting component can drive the adjusting roll to move in a direction perpendicular to the film conveying direction, and the displacement amplitude is matched with the rotation torque of the main material roll through electronic control adjustment. A mold closing mechanism is used to flatten and close the multilayer film. The edge-tracing mechanism includes a support platform, a dual-axis shifting component, a first pressing module, and a second pressing module. The support platform is horizontally fixed inside the frame. The film after molding is supported by the support platform and passes through the first pressing module and the second pressing module in sequence. The second pressing module is fixed to the frame. The dual-axis shifting component can drive the first pressing module to shift bidirectionally in the plane corresponding to the film.

2. The liquid bag film feeding and conveying device according to claim 1, characterized in that: The film is double-layered. A positioning roller is also provided between the main material roller and the tension control mechanism. The two ends of the positioning roller are fixed in the frame. A first cylinder is also fixed above the positioning roller on the frame. The output direction of the first cylinder is perpendicular to the film conveying direction. A first pressure plate is fixed at the output end of the first cylinder to cover the positioning roller.

3. The liquid bag film feeding and conveying device according to claim 1, characterized in that: The lifting component includes a height plate, a lifting platform, and a drive sprocket. The height plate is vertically fixed inside the frame. The height plate has multiple vertical adjustment slots that correspond one-to-one with the adjustment rollers. The lifting platform is slidably connected inside the adjustment slots and is driven to lift by the drive sprocket.

4. The liquid bag film feeding and conveying device according to claim 3, characterized in that: The roller assembly includes at least four sets.

5. The liquid bag film feeding and conveying device according to claim 1, characterized in that: The mold clamping mechanism includes a guide roller, a mold clamping table, and a mold clamping roller. The mold clamping table has a horizontal inner cavity with a thickness corresponding to the film thickness. A manual adjustment component is fixed at the bottom of the mold clamping table to move the film in the inner cavity in the film width direction. The mold clamping roller includes two rollers arranged vertically opposite each other. Both mold clamping rollers are fixed to the frame. After being guided by the guide roller, the film passes through the inner cavity and between the two mold clamping rollers in sequence and covers the top surface of the support platform.

6. The liquid bag film feeding and conveying device according to claim 5, characterized in that: The manual adjustment component includes a slide rail, an adjusting screw, and a nut seat. The slide rail is parallel to the width direction of the film. The adjusting screw is rotatably connected to the frame. The nut seat is threadedly engaged with the adjusting screw. The center of the bottom surface of the mold closing table is fixed to the top surface of the nut seat.

7. The liquid bag film feeding and conveying device according to claim 5, characterized in that: The support platform consists of multiple thin tubes arranged at equal intervals along the width of the film. Both ends of the multiple thin tubes are bent and embedded with connecting plates, and are fixed to the bracket through the connecting plates.

8. The liquid bag film feeding and conveying device according to claim 7, characterized in that: A spot weld is provided between the mold closing roller and the first pressing mold assembly. The spot weld includes a second cylinder and an electric heating rod. The second cylinder is fixed to the top of the support platform through a connecting platform. The output of the second cylinder is perpendicular to the top surface of the support platform. The heating rod is vertically fixed to the output end of the second cylinder and is located between the gaps in the arrangement of the thin tubes.

9. The liquid bag film feeding and conveying device according to claim 5, characterized in that: The first pressing module includes a third cylinder, a height platform, a third pressure platform, and a base platform. The third cylinder is fixed to the top of the height platform, and the output end of the third cylinder is fixedly connected to the third pressure platform. The base platform is arranged opposite to the third pressure platform and fixed to the height platform. The base platform has tube grooves corresponding to the thin tubes one by one, and each thin tube is exposed on the top surface of the tube groove. The output direction of the third cylinder is perpendicular to the top surface of the support platform. The second pressing module includes a fourth cylinder and a discharge roller. The output direction of the fourth cylinder is perpendicular to the top surface of the support platform. The discharge roller is fixed to the frame. The output end of the fourth cylinder is fixed with a fourth pressure platform to cover the discharge roller.

10. A liquid bag film feeding and conveying device according to claim 1, characterized in that: The biaxial shifting component drives the first pressing module to shift in the width and length directions of the film, and the shifting range can cover the width and length of the support platform.

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