Film blowing, printing and organ folding all-in-one machine for packaging bag

Abstract

The utility model discloses a film blowing, printing and organ folding all-in-one machine for a packaging bag, which is characterized in that a film blowing discharging guide roller, a printing feeding guide roller, a folding feeding guide roller, a folding pressing roller and the like are arranged as a connecting structure, and a film blowing part, a printing part, an organ folding part and a receiving part are integrated into an integrated assembly line type mechanism. The film manufactured by the film blowing part is continuously printed and folded to form an organ surface, and finally the film is directly wound by the material receiving part, so that the working procedures are concentrated, the material transfer link is reduced, the film output by the film blowing machine does not need to be specially transferred to a printing machine at other places for printing, the step of independently folding the organ surface is saved, the production efficiency is improved, and the production cost is reduced. All process devices can be maintained in a centralized mode, the stability of large-scale production is guaranteed, and the occupied space of equipment is compressed.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bag manufacturing, in particular to a film blowing, printing and accordion folding integrated machine for packaging bags. Background Art

[0002] Packaging bags are favored by consumers due to their beautiful appearance, convenient use and low cost. They are widely used in the packaging and transportation of daily consumer goods such as food and medicine. Accordion bags are a type of packaging bag. The two sides of the bag are folded inward to form an accordion surface. The bag opens to a rectangular shape. After folding, the bag volume is compressed for easy storage and transportation. After the object is loaded, the accordion surface of the bag will be stretched to expand the storage space.

[0003] The common production process of accordion bags requires film blowing first. The film blowing machine is an important film processing equipment that can heat and melt plastic particles and then blow them into a double-layer film that constitutes the bag body. Then, because it is necessary to print patterns such as product logos and text such as production information on the surface of the bag body, the bag body made by the film blowing machine is transferred to the packaging bag printing machine, which smears the ink on its printing plate on the film surface to achieve the printing effect, and the double-layer film with printed surface is rolled up. Finally, in order to obtain the accordion bag, it is transferred to the folding device for folding to form a bag film with an accordion surface.

[0004] The transfer between the film blowing machine, the packaging bag printing machine and the folding device will undoubtedly affect the production efficiency of the accordion bag, and the transfer process is generally completed by the operators, which increases the transportation cost. Therefore, it is necessary to propose a new improvement plan to form an integrated equipment plan that can continuously complete the film blowing, printing and accordion folding of the packaging bag to adapt to the large-scale production of accordion packaging bags. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a film blowing, printing and accordion folding machine for packaging bags to solve the above problems.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a film blowing, printing and accordion folding integrated machine for packaging bags, which comprises a film blowing part, a printing part, an accordion folding part and a material receiving part.

[0008] The film blowing section includes a feed hopper, an extruder, a film blowing machine frame, a blown film die head, an air ring, a chevron folder, and a film blowing blanking guiding roller. The feed hopper is connected to the front end of the extruder. The blown film die head is fixed to the rear end of the extruder and is used to blow out a film bubble. The blown film die head, the air ring, the chevron folder, and the film blowing blanking guiding roller are installed on the film blowing machine frame. The air ring is arranged above the blown film die head. The chevron folder is arranged above the air ring to guide the film bubble to converge so as to flatten the film bubble into a double-layer film through a first film pressing roller arranged on the chevron folder.

[0009] The printing section includes a plurality of inking devices arranged in a column. The film passes through each inking device in turn to be printed with corresponding color patterns. A printing feeding guiding roller is arranged on the inking device at the head of the column to receive the film transmitted from the film blowing blanking guiding roller.

[0010] The bellows edge folding section includes a folding edge bracket and a folding edge feeding guiding roller, a rolling press roller, a bellows die, and a folding edge pressing roller fixed on the folding edge bracket. The folding edge feeding guiding roller is used to guide the film printed on the inking device at the end of the column in the printing section to the rolling press roller to be flattened. The bellows die is arranged below the rolling press roller. The folding edge pressing roller is located below the bellows die.

[0011] The winding section is used to wind the film conveyed out from the folding edge pressing roller.

[0012] Preferably, a deviation rectifying device is fixed on the film blowing machine frame. The deviation rectifying device includes a slide rail, a displacement sensor, and a deviation rectifying controller connected to the displacement sensor. The film blowing blanking guiding roller is slidably connected to the slide rail along its axial direction through a sliding seat. The displacement sensor faces the film surface. The sliding seat is driven by the deviation rectifying controller.

[0013] Preferably, the displacement sensor is an infrared sensor. A second film pressing roller is arranged between the film blowing blanking guiding roller and the chevron folder. The emitting end of the displacement sensor is fixedly installed on the film blowing machine frame and is located between the second film pressing roller and the film blowing blanking guiding roller. The receiving end of the displacement sensor is fixedly installed on the inking device at the head of the column and is located below the printing feeding guiding roller.

[0014] Preferably, the bellows die includes two symmetric bellows plates. Concave folding surfaces are symmetrically formed between the two ends of the two bellows plates. The distance between the two bellows plates gradually closes and shrinks from top to bottom, and openings of different sizes are formed at the upper and lower parts respectively. Mounting cross beams are respectively fixed on the two bellows plates.

[0015] Preferably, the film passing through the rolling roller is folded from a direction parallel to the axial direction of the rolling roller to a direction perpendicular to the axial direction of the rolling roller. The length direction of the installation cross beam is parallel to the axial direction of the rolling roller, so that the film enters the opening above the accordion die in a state perpendicular to the axial direction of the rolling roller.

[0016] Preferably, a traction roller fixed to the blown film machine frame is provided between the herringbone splint and the blown film feeding guide roller. The winding part includes a winding roller, and a traction roller is also provided between the hemming pressure roller and the winding roller.

[0017] Preferably, a deviation rectifying device facing the hemming bracket is also fixed on the inking device at the end of the column.

[0018] The technical effects achieved by the technical solution of the present utility model mainly include:

[0019] The above-mentioned blown film, continuous printing and accordion hemming integrated machine for packaging bags integrates a blown film part, a printing part, an accordion hemming part and a winding part, and is realized by using a blown film feeding guide roller, a printing feeding guide roller, a hemming feeding guide roller, a hemming pressure roller, etc. as connection structures. The film formed by the blown film part can be continuously printed by the printing part without interruption, then form an accordion surface through the accordion hemming part, and finally be directly wound by the winding part, so that the process of forming the bag forms a continuous assembly line operation, omitting the material transfer link, centralizing the processes of blown film, printing and accordion hemming, etc., and effectively improving the production efficiency;

[0020] Forming an integrated machine structure can enable centralized maintenance of production function devices such as the blown film part, the printing part and the accordion hemming part, and improve the space utilization rate of the equipment;

[0021] Furthermore, a deviation rectifying device can be provided at the connection between different devices such as the blown film part and the printing part to facilitate the accurate connection of the integrated machine structure and ensure the smooth transfer of the film. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the blown film, continuous printing and accordion hemming integrated machine for packaging bags provided by an embodiment of the present utility model;

[0023] Figure 2 For corresponding Figure 1 A partial enlarged view of the circular dotted line box area A in;

[0024] Figure 3 is a schematic diagram of the connection slide rail of the blown film feeding guide roller in the deviation rectifying device;

[0025] Figure 4 is a schematic structural diagram of the transmitting section of the displacement sensor in the deviation rectifying device;

[0026] Figure 5 is a schematic structural diagram of the accordion die.

[0027] The reference numerals in the above-mentioned drawings are as follows:

[0028] Blown film section 1, film bubble 10, feed hopper 11, extruder 12, blown film machine frame 13, traction roller 131, blown mold head 14, air ring 15, chevron folder 16, blown film blanking guide roller 17, first film pressing roller 18, second material pressing roller 19;

[0029] Printing section 2, inking device 21, printing feeding guide roller 22;

[0030] Bellows edge folding section 3, edge folding bracket 31, edge folding feeding guide roller 32, rolling roller 33, bellows mold 34, opening 340, bellows plate 341, folding line surface 342, installation cross beam 343, edge folding material pressing roller 35;

[0031] Rewinding section 4, rewinding roller 41;

[0032] Rectification device 5, slide rail 51, displacement sensor 52, sliding seat 53. Detailed implementation manners

[0033] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the following will describe in detail the specific implementation manners of the present utility model with reference to the drawings. Examples of these preferred implementation manners are illustrated in the drawings. The implementation manners of the present utility model shown in the drawings and described according to the drawings are merely exemplary, and the present utility model is not limited to these implementation manners.

[0034] In order to avoid obscuring the present utility model with unnecessary details, only the structures and / or processing steps closely related to the solution of the present utility model are shown in the drawings, while other details of little relevance are omitted.

[0035] Refer to Figure 1 As shown, an embodiment of the present utility model provides an integrated machine for blown film, continuous printing and bellows edge folding of a packaging bag, which includes: a blown film section 1, a printing section 2, a bellows edge folding section 3 and a rewinding section 4.

[0036] Combined with Figures 1 to 3As shown in the figure, the film blowing section 1 includes a feed hopper 11, an extruder 12, a film blowing machine frame 13, a blown film die head 14, an air ring 15, a chevron folder 16, and a film blowing blanking guiding roller 17. The feed hopper 11 is connected to the front end of the extruder 12. The blown film die head 14 is fixed to the rear end of the extruder 12 and is used to blow out a film bubble 10. The blown film die head 14, the air ring 15, the chevron folder 16, and the film blowing blanking guiding roller 17 are installed on the film blowing machine frame 13. The air ring 15 is arranged above the blown film die head 14, and the chevron folder 16 is arranged above the air ring 15 to guide the film bubble 10 to converge so that the film bubble 10 is flattened into a double-layer film by a first film pressing roller 18 arranged on the chevron folder 16.

[0037] The printing section 2 includes a plurality of inking devices 21 arranged in columns. The film passes through each inking device 21 in sequence to be printed with corresponding color patterns. A printing feeding guiding roller 22 is arranged on the inking device 21 at the head of the column to receive the film transmitted by the film blowing blanking guiding roller 17.

[0038] The bellows folding section 3 includes a folding bracket 31 and a folding feeding guiding roller 32, a rolling roller 33, a bellows die 34, and a folding film pressing roller 35 fixed on the folding bracket 31. The folding feeding guiding roller 32 is used to guide the film printed on the inking device 21 at the end of the column of the printing section to the rolling roller 33 to be flattened. The bellows die 34 is arranged below the rolling roller 33, and the folding film pressing roller 35 is located below the bellows die 34.

[0039] The winding section 4 is used to wind the film conveyed out by the folding film pressing roller 35.

[0040] The working process of the film blowing, continuous printing and bellows folding integrated machine for packaging bags is as follows:

[0041] The raw material of the plastic film is input into the extruder 12 through the feed hopper 11. After the plastic film raw material is completely melted and reaches the set temperature in the hot melt channel of the extruder 12, the molten raw material is sent out by the extruder 12 to the blow molding die head 14. Under the action of high temperature and high pressure, the raw material becomes a film shape presenting a circular or flat shape. The blow molding die head 14 controls the gas flow rate and pressure through the air ring 15, blows up the molten raw material to form a film bubble 10 and cools it. The film bubble 10 enters the herringbone pinch rolls for folding, and is flattened into a flat and wrinkle-free double-layer film by the first film pressing roller 18 on the herringbone pinch rolls 16, and is guided by the film blowing and feeding guide roller 17 to the printing part of the next component; the printing feeding guide roller 22 guides the film in, so that the film passes through the inking device 21 corresponding to different color ink trays in sequence. Every time the film passes through an inking device 21, the film will be covered with ink by the inking roller cylinder of the printing plate with the corresponding color predetermined pattern and text, completing the printing; the film is then transferred from the inking device 21 at the end of the line to the folding feeding guide roller 32 of the bellows folding part 3, and the film is flattened by the rolling press roller 33 to prepare to enter the bellows mold 34. The film is folded into a bellows surface through the bellows mold 34, and then is re-pressed by the folding edge pressing roller 35 below; finally, the winding part 4 winds the film conveyed from the folding edge pressing roller 35 to obtain a bellows bag roll with printed patterns, waiting for a cutting mechanism such as a slitter to cut it into finished bellows bags of a specified length.

[0042] In the embodiment of the present utility model, by providing the film blowing and feeding guide roller 17, the printing feeding guide roller 22, the folding feeding guide roller 32, the folding edge pressing roller 35, etc. as connection structures, the film blowing part 1, the printing part 2, the bellows folding part 3 and the winding part 4 are integrated into an integrated assembly line type mechanism. It is equivalent to setting a printing machine in front of the winding mechanism of the film blowing machine, and selectively installing the bellows folding part 3 according to the requirements of making bellows bags, so that before the film blowing part 1 winds the finished bag into a cylinder, the required pattern can be printed on the bag surface first, and the bellows surface can be folded through the bellows folding part 3. The winding part 4 winds up the printed bellows bag, so that there is no need to specially transfer the packaging bag of the film blowing machine to the printing machine for printing again, saving the step of folding the bellows surface alone, centralizing the process, reducing the material transfer link, improving the production efficiency, and ensuring the stability of large-scale production.

[0043] For the connection between different devices such as the film blowing part 1 and the printing part 2, it is easy for the position of the connection structure to shift over time, resulting in the shift of the film and affecting normal production. Therefore, in this embodiment, combined with Figures 1 to 4As shown, a deviation rectifying device 5 is fixed on the frame 13 of the film blowing machine. The deviation rectifying device 5 includes a slide rail 51, a displacement sensor 52, and a deviation rectifying controller connected to the displacement sensor 52. The film blowing and feeding guide roller 17 is slidably connected to the slide rail 51 along its axial direction through a sliding seat 53. The displacement sensor 52 faces the film surface, and the sliding seat 53 is controlled and driven by the deviation rectifying controller. Its principle is similar to that of a conventional deviation rectifying device. When the displacement sensor 52 detects that the film deviates in the axial direction perpendicular to the transmission direction, it feeds back to the deviation rectifying controller. The deviation rectifying controller controls the driving component of the sliding seat 53 to drive the sliding seat 53 to drive the feeding guide roller 17 to move in a direction opposite to the deviation for resetting, so as to ensure the smooth transfer of the film. Further, the deviation rectifying device 5 includes an alarm component connected to the deviation rectifying controller, which emits an alarm when the film deviates, reminding the operator. In addition to reminding the operator of the deviation during operation, the problem of misalignment between the film blowing part 1 and the printing part 2 can be detected when the film blowing part 1 and the printing part 2 are docked.

[0044] Exemplarily, the displacement sensor 52 is an infrared sensor. A second pressure roller 19 is provided between the film blowing and feeding guide roller 17 and the herringbone splint 16. The emitting end of the displacement sensor 52 is fixedly installed on the frame 13 of the film blowing machine and is located between the second pressure roller 19 and the film blowing and feeding guide roller 17. The receiving end of the displacement sensor 52 is fixedly installed on the inking device 21 at the head of the column and is located below the printing and feeding guide roller 22. The infrared sensing range spans multiple film strips from the second pressure roller 19 to the inking device 21 at the head of the column.

[0045] As Figure 5 As shown, the bellows die 34 includes two symmetric bellows plates 341. Concave folding surfaces 342 are symmetrically formed between the two ends of the two bellows plates 341. The distance between the two bellows plates 341 gradually closes and shrinks from top to bottom, and openings 340 of different sizes are formed at the upper and lower parts respectively. Mounting cross beams 343 are respectively fixed on the two bellows plates 341, which is convenient for installing and fixing the bellows plates 341 to the hemming bracket 31.

[0046] When the printed and dried film continues to be conveyed forward and enters the bellows die 34, the film advances along the folding surface 342. The distance between the two bellows plates 341 gradually shrinks, that is, the narrowing of the folding surface 342, causing the film to form a preset crease. The hemming pressure roller 35 is responsible for compacting these creases to form a film with a bellows surface after unfolding. Through precise debugging, it can be ensured that the creases are uniform and the depth is consistent, and the film will not be overstretched or torn.

[0047] Specifically, the film passing through the rolling roller 33 is folded from a direction parallel to the axial direction of the rolling roller 33 to a direction perpendicular to the axial direction of the rolling roller 33. The length direction of the mounting cross beam 343 is parallel to the axial direction of the rolling roller 33, so that the film enters the opening 340 above the bellows die 34 in a state perpendicular to the axial direction of the rolling roller 33.

[0048] Furthermore, in order to stably guide the film to the film blowing and feeding guiding roller 17 and the winding roller 41, a traction roller 131 fixed to the film blowing machine frame 13 is provided between the herringbone splints 16 and the film blowing and feeding guiding roller 17. The winding part 4 includes a winding roller 41, and a traction roller 131 is also provided between the hemming and pressing roller 35 and the winding roller 41.

[0049] Since the printing part 2 and the bellows hemming part 3 are both independent mechanisms, with the increase of production time, film deviation may also occur at the connection between the two. In this embodiment, a deviation rectifying device 5 facing the hemming bracket 31 is also fixed on the inking device 21 at the end of the row. Its structural setting is the same as that of the deviation rectifying device 5 fixed on the film blowing machine frame 13. Refer to its setting and no further description will be given here.

[0050] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0051] The above are only specific embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A film blowing and printing machine with accordion folding for packaging bags, characterized in that: include: The film blowing section (1) comprises a feed hopper (11), an extruder (12), a film blowing machine frame (13), a blow molding die head (14), an air ring (15), a herringbone splint (16) and a film blowing material guide roller (17). The feed hopper (11) is connected to the front end of the extruder (12), the blow molding die head (14) is fixed to the rear end of the extruder (12) and is used to blow out film bubbles (10). The die head (14), the air ring (15), the herringbone splint (16) and the film blowing material guide roller (17) are installed on the film blowing machine frame (13), the air ring (15) is arranged above the blowing die head (14), the herringbone splint (16) is arranged above the air ring (15), and guides the film bubble (10) to collapse so as to be flattened into a double-layer film by a first film pressing roller (18) arranged on the herringbone splint (16); A printing section (2), the printing section (2) comprising a plurality of inking devices (21) arranged in a row, so that the film passes through each inking device (21) in sequence to be printed with a corresponding color pattern, and a printing feed guide roller (22) is provided on the inking device (21) at the head of the row to receive the film transmitted by the film blowing unloading guide roller (17); An accordion folding portion (3), the accordion folding portion (3) comprising an accordion folding bracket (31), an accordion feeding guide roller (32) fixed on the accordion folding bracket (31), a rolling roller (33), an accordion mold (34) and an accordion pressing roller (35), the accordion feeding guide roller (32) being used to guide the film printed on the inking device (21) at the end of the printing section to the rolling roller (33) for flattening, the accordion mold (34) being arranged below the rolling roller (33), and the accordion pressing roller (35) being located below the accordion mold (34); A material receiving section (4), wherein the material receiving section (4) is used to reel in the film delivered from the folding pressure roller (35).

2. The film blowing and printing and accordion folding integrated machine for packaging bags according to claim 1, characterized in that: A deviation correction device (5) is fixed on the film blowing machine frame (13), and the deviation correction device (5) comprises a slide rail (51), a displacement sensor (52) and a deviation correction controller connected to the displacement sensor (52); the film blowing unloading guide roller (17) is slidably connected to the slide rail (51) along its axial direction through a sliding seat (53); the displacement sensor (52) faces the film surface, and the sliding seat (53) is controlled and driven by the deviation correction controller.

3. The film blowing and printing and accordion folding integrated machine for packaging bags according to claim 2, characterized in that: The displacement sensor (52) is an infrared sensor. A second pressing roller (19) is arranged between the film blowing unloading guide roller (17) and the herringbone splint (16). The transmitting end of the displacement sensor (52) is fixedly mounted on the film blowing machine frame (13) and is located between the second pressing roller (19) and the film blowing unloading guide roller (17). The receiving end of the displacement sensor (52) is fixedly mounted on the first inking device (21) and is located below the printing feeding guide roller (22).

4. The film blowing and printing and accordion folding integrated machine for packaging bags according to claim 1, characterized in that: The accordion mold (34) comprises two symmetrical accordion plates (341), with an inwardly concave fold line surface (342) symmetrically formed between the two ends of the two accordion plates (341), the two accordion plates (341) gradually approach each other from top to bottom and the spacing between them shrinks, and openings (340) of different sizes are formed at the top and bottom respectively, and a mounting crossbeam (343) is fixed on each of the two accordion plates (341).

5. The film blowing and printing and accordion folding integrated machine for packaging bags according to claim 4, characterized in that: The film passing through the rolling roller (33) is folded from a direction parallel to the axial direction of the rolling roller (33) to a direction perpendicular to the axial direction of the rolling roller (33), and the length direction of the mounting crossbeam (343) is parallel to the axial direction of the rolling roller (33), so that the film enters the opening (340) above the accordion mold (34) in a state perpendicular to the axial direction of the rolling roller (33).

6. The film blowing and printing and accordion folding integrated machine for packaging bags according to claim 1, characterized in that: A traction roller (131) fixed on the film blowing machine frame (13) is arranged between the herringbone splint (16) and the film blowing unloading guide roller (17); the material receiving section (4) includes a material receiving roller (41); and a traction roller (131) is also arranged between the folding pressing roller (35) and the material receiving roller (41).

7. The film blowing and printing and accordion folding integrated machine for packaging bags according to claim 3, characterized in that: A deviation correction device (5) facing the folding bracket (31) is also fixed on the inking device (21) located at the end of the column.

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