A multi-chamber bag making method and equipment

Abstract

The present invention discloses a method for making a multi-chamber bag, comprising the following steps: welding a hose between two layers of film material; performing weak welding on the film material to divide it into a plurality of bag chambers; performing solid welding and cutting on the film material to form a multi-chamber bag. The present invention also discloses a multi-chamber bag making device, comprising: a hose welding device, a weak welding device and a bag making device, wherein the weak welding device is arranged between the hose welding device and the bag making device. By first welding the hose, then performing the welding of the weak weld, and then performing the welding of the bag making, leakage at the joint between the weak weld and the solid weld of the bag making can be avoided, and at the same time, the position of the weak weld in the bag shape can be ensured to be stable, and in addition, waste of the film material can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-chamber bags, and in particular to a multi-chamber bag making method and equipment. Background Art

[0002] There are two main ways to set up the weak welding station in the existing multi-chamber bag production line:

[0003] One is to set the weak welding station after the shaping station, which will cause liquid cross-linking at the weld joint, affecting product quality;

[0004] The other method is to set the weak welding station at the front end of the equipment, before the printing station. This method has the following problems: First, the position of the weak weld is uncertain because the weak welding station is too far away from the bag making station, that is, the position of the weak weld in the bag is not fixed; second, a part of the area that cannot be filled must be reserved at the front end of the bag, resulting in a great waste of film materials.

[0005] Therefore, how to provide a multi-chamber bag making method and equipment to improve the production quality of the multi-chamber bag is a technical problem that technicians in this field urgently need to solve. Summary of the invention

[0006] One object of the present invention is to provide a multi-chamber bag making method, which can effectively solve the problems of liquid cross-linking at the weld joint, uncertain position of weak welds, waste of film materials, etc.; another object is to provide a multi-chamber bag making equipment.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A method for making a multi-chamber bag comprises the following steps:

[0009] Weld the hose between two layers of membrane material;

[0010] Performing weak welding on the film material to divide the film material into a plurality of bag chambers;

[0011] The film material is solid welded and cut to form a multi-chamber bag.

[0012] Preferably, after the film material is actually welded and cut to form a multi-chamber bag, the method further includes shaping the edge of the multi-chamber bag.

[0013] Preferably, after the film material is actually welded and cut to form a multi-chamber bag, the method further includes filling the multi-chamber bag; before or after the multi-chamber bag is filled, the multi-chamber bag is filled with nitrogen.

[0014] Preferably, after filling the multi-chamber bag, the method further comprises plugging the hose opening of the multi-chamber bag to seal the multi-chamber bag.

[0015] Preferably, before the step of welding the hose between the two layers of film material, the method further comprises heating the area of ​​the hose to be welded.

[0016] A multi-chamber bag making device, comprising:

[0017] A hose welding device, used to weld the hose between two layers of membrane material;

[0018] A weak welding device, used for performing weak welding on the film material to divide the film material into a plurality of bag chambers;

[0019] The bag making device is used to solid weld and cut the film material after weak welding to make a multi-chamber bag;

[0020] The weak welding device is arranged between the hose welding device and the bag making device.

[0021] Preferably, it also includes a shaping device for removing scraps from the edge of the multi-chamber bag.

[0022] Preferably, it further comprises a filling device and a nitrogen filling device, wherein the filling device is used to fill the multi-chamber bag, and the nitrogen filling device is used to fill the multi-chamber bag with nitrogen.

[0023] Preferably, it also includes a stoppering device for sealing the multi-chamber bag after filling.

[0024] Preferably, the invention further comprises a preheating device for heating the hose before welding.

[0025] Compared with the prior art, the above technical solution has the following advantages:

[0026] The present invention provides a multi-chamber bag making method, comprising the following steps: welding a hose between two layers of film material; performing weak welding on the film material to divide it into a plurality of bag chambers; performing solid welding and cutting on the film material to form a multi-chamber bag. By first welding the hose, then performing weak welding, and then performing bag making welding, leakage at the joint between the weak welding and the solid welding of the bag making can be avoided, and at the same time, the position of the weak welding in the bag shape can be ensured to be stable, and in addition, waste of film material can be avoided.

[0027] The present invention also provides a multi-chamber bag making device, comprising: a hose welding device for welding a hose between two layers of film material; a weak welding device for performing weak welding on the film material to divide it into a plurality of bag chambers; and a bag making device for performing solid welding and cutting the film material after weak welding to make a multi-chamber bag. By arranging the weak welding device between the hose welding device and the bag making device, the phenomenon of liquid cross-linking at the weld joint can be avoided, the position certainty of the weak weld is ensured, and the waste of film material is also avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic flow chart of a multi-chamber bag making method provided in a specific embodiment of the present invention;

[0030] Figure 2 A schematic top view of the structure of a multi-chamber bag making device provided in a specific embodiment of the present invention.

[0031] The reference numerals are as follows:

[0032] 1 is the main electrical cabinet, 2 is the film loading device, 3 is the printing device, 4 is the film pulling device, 5 is the preheating device, 6 is the hose welding device, 7 is the hose feeding device, 8 is the weak welding device, 9 is the bag making device, 10 is the shaping device, 11 is the bag transferring device, 12 is the nitrogen filling device, 13 is the filling device, 14 is the plugging device, and 15 is the output device. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] In the following description, specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Please refer to Figure 1 , Figure 1 A schematic flow chart of a multi-chamber bag making method provided in accordance with a specific embodiment of the present invention.

[0036] A specific embodiment of the present invention provides a method for making a multi-chamber bag, comprising the following steps:

[0037] S1: Film loading station, unfilming the whole roll of film material and supplying it to the subsequent stations;

[0038] S2: Printing station, using a heated printing template to transfer the color of the ribbon to the surface of the film with a certain pressure;

[0039] S3: Film-drawing station, preferably using an electric cylinder to drive the clamping hand for clamping the film material to move, so as to realize the feeding of the film material;

[0040] S4: Hose welding station, where the hose is welded between two layers of film. Specifically, the heated mold can be driven by a cylinder to weld the film and the hose while maintaining a certain pressure and time. At the same time, the film needs to be cut so that the cut film bag is separated from the front film.

[0041] S5: Weak welding station, weak welding is performed on the film material to divide the film material into multiple bag chambers. Specifically, the film material can be weakly welded by driving the heated weak welding mold through a cylinder to maintain a certain pressure and time to achieve a peel strength of the weak weld within a certain range;

[0042] S6: Bag making station, which performs actual welding and cutting on the film material to form a multi-chamber bag. Specifically, the bag type can be welded and cut by using a booster cylinder to drive the heated mold.

[0043] By welding the hose first, then welding the weak weld, and then welding the bag, leakage at the joint between the weak weld and the bag-making weld can be avoided, while ensuring the stability of the weak weld in the bag shape, and also avoiding waste of film materials. Except for the hose welding station, the weak weld station and the bag-making station, the other stations are conventional stations and the order remains unchanged. For details, please refer to the prior art.

[0044] Furthermore, after the film material is actually welded and cut to form a multi-chamber bag, the following steps are also included:

[0045] S7: Shaping station, shaping the edge of the multi-chamber bag. Specifically, the cylinder-driven mold can be used to cool and shape the hose welding point, while removing the waste edges and scraps that may exist on the edge of the multi-chamber bag.

[0046] S8: Bag transfer station, remove the multi-chamber bag from the bag making fixture and turn it over, then transfer it to the filling fixture and tighten it, wherein one multi-chamber bag or multiple multi-chamber bags can be transferred at a time.

[0047] Furthermore, after the film material is actually welded and cut to form a multi-chamber bag, the following steps are also included:

[0048] S9: Filling station, filling the multi-chamber bag, specifically, the filling nozzle can be driven by the cylinder to drop and insert into the hose. Before or after filling the multi-chamber bag, the multi-chamber bag is filled with nitrogen, specifically, high-purity nitrogen can be used to replace the gas in the multi-chamber bag to reduce the residual oxygen in the bag. By setting the filling and nitrogen filling of the multi-chamber bag at one station, the filling cycle time can be shortened and the equipment operation speed can be increased.

[0049] S10: a plugging station, plugging the hose opening of the multi-chamber bag to seal the multi-chamber bag, wherein the plugging action can be performed by a cylinder-driven clamp to clamp the plug, and of course, the plugging operation can also be performed by other methods, which is not specifically limited in this embodiment.

[0050] Specifically, before the hose welding station, the following steps are also included:

[0051] S401: The hose loading station can place a hose of a fixed length on a hose fixture and then transfer it. In addition, a rolled hose can also be used. The equipment is equipped with a tube cutting assembly to cut the hose into the required fixed length. The specific selection can be made according to the actual situation.

[0052] S402: preheating station, heating the area of ​​the hose to be welded. Specifically, the area of ​​the hose to be welded can be preheated by a cylinder-driven heated mold to improve the welding efficiency of the hose.

[0053] One embodiment of the present invention also provides a multi-chamber bag making device, please refer to Figure 2 The multi-chamber bag making equipment includes: a film material transferring device, a hose feeding device 7, a hose welding device 6, a weak welding device 8 and a bag making device 9, wherein the weak welding device 8 is located between the hose welding device 6 and the bag making device 9. The film material transfer device is used to transfer the film material to the hose welding device 6; the hose feeding device 7 is used to transfer the hose to the hose welding device 6. The film material transfer device specifically includes a film loading device 2, a printing device 3 and a film pulling device 4. The film loading device 2 is used to defilm the entire roll of film material to supply it to the subsequent workstation. The printing device 3 uses a heated printing template to transfer the pigment of the ribbon to the surface of the film material with a certain pressure. The film pulling device 4 is used to clamp the film material to achieve the feeding of the film material, wherein the main electrical cabinet 1 of the equipment is arranged on the side of the film loading device 2; the hose welding device 6 is used to weld the hose between two layers of film material, and then the film material is weakly welded by the weak welding device 8 to divide a plurality of bag chambers on the film material, and then the film material after weak welding is actually welded by the bag making device 9 and the bag type is cut from the film material. At this time, the bag making operation of the multi-chamber bag can be completed. By arranging the weak welding device 8 between the hose welding device 6 and the bag making device 9, the phenomenon of liquid cross-linking at the weld joint can be avoided, the position certainty of the weak weld is ensured, and the waste of film material is also avoided.

[0054] It should be noted that the specific working principles of the above-mentioned film material transfer device and hose feeding device can be referred to the prior art, and will not be described in detail in this embodiment.

[0055] Furthermore, a shaping device 10 is included for removing the scraps at the edge of the multi-chamber bag. The shaping device 10 is arranged at the next station of the bag making device 9. The shaping device 10 is also used to cool and shape the hose welding position. The shaping device 10 can improve the manufacturing quality of the multi-chamber bag.

[0056] Furthermore, it also includes a filling device 13 and a nitrogen filling device 12. The shaped multi-chamber bag is transferred to the filling device 13 by the bag transfer device 11, and the filling device 13 can fill the multi-chamber bag. The nitrogen filling device 12 can fill the multi-chamber bag with nitrogen before or after filling. The nitrogen filling device 12 can reduce the residual oxygen content in the multi-chamber bag, thereby preventing the oxidation of the liquid medicine in the multi-chamber bag.

[0057] Secondly, it also includes a plugging device 14 for sealing the filled multi-chamber bag. The plugging device 14 includes a plugging cylinder and a gripper. The plugging cylinder is used to drive the gripper to grab the plug from the hopper, and then put the plug into the hose to achieve the plugging operation of the multi-chamber bag. After the multi-chamber bag is plugged, the multi-chamber bag is transmitted through the output device 15 to complete the bag making and filling operation of the multi-chamber bag.

[0058] In addition, a preheating device 5 for heating the hose before welding is also included. The preheating device 5 is arranged between the hose feeding device 7 and the hose welding device 6. The preheating device 5 can improve the welding efficiency of the hose.

[0059] It should also be noted that, in this article, the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0060] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0061] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for making a multi-chamber bag, characterized in that: include: The film loading station unwinds the entire roll of film material and supplies it to subsequent stations for use; The printing station uses a heated printing template to transfer the color of the ribbon to the surface of the film material with a certain pressure; The film pulling station uses an electric cylinder to drive the clamping hand that clamps the film material to move, so as to realize the feeding of the film material; The upper hose station can place the hose of fixed length on the hose clamp and then transfer it, or use the rolled hose and configure the tube cutting assembly on the equipment to cut the hose into the required fixed length; A preheating station for heating the area of ​​the hose to be welded; Hose welding station, welding the hose between two layers of membrane material; Performing weak welding on the film material to divide the film material into a plurality of bag chambers; Performing solid welding and cutting on the film material to form a multi-chamber bag; shaping the edges of the multi-chamber bag; filling the multi-chamber bag; Before or after filling the multi-chamber bag, filling the multi-chamber bag with nitrogen; A plug is placed inside the hose opening of the multi-chamber bag to seal the multi-chamber bag.

2. A multi-chamber bag making device, applied to the multi-chamber bag making method according to claim 1, characterized in that: include: The film material transfer device is used to transfer the film material to the hose welding device; A hose feeding device, the hose feeding device is used to convey the hose to the hose welding device; A hose welding device, used to weld the hose between two layers of membrane material; A weak welding device, used for performing weak welding on the film material to divide the film material into a plurality of bag chambers; The bag making device is used to solid weld and cut the film material after weak welding to make a multi-chamber bag; The weak welding device is arranged between the hose welding device and the bag making device; Also included is a preheating device for heating the hose before welding; Also included is a shaping device for removing scraps from the edge of the multi-chamber bag; It also includes a filling device and a nitrogen filling device, wherein the filling device is used to fill the multi-chamber bag, and the nitrogen filling device is used to fill the multi-chamber bag with nitrogen; Also included is a stoppering device for sealing the multi-chamber bag after filling.

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