CN220681790U - Multi-chamber bag mouth pipe welding jig - Google Patents

Abstract

The utility model provides a welding jig for a multi-chamber bag mouth tube in the medical field. Comprises a welding mould and a shaping mould; the inner cavities of the upper welding die and the lower welding die of the welding die are of semicircular arc structures, welding edges are arranged at the tail ends of the semicircular arc edges, and concave cavities are formed in the welding edges, so that when the mouth tube is welded with the upper film material and the lower film material, part of soft upper film material/lower film material is filled into the concave cavities to form redundant rib angles; the shaping upper die and the shaping lower die of the shaping die are also of semicircular arc structures, shaping ridges are arranged at the tail ends of the semicircular arc edges, and when the multi-chamber bag is shaped, the rib angles are extruded by the shaping ridges, so that the rib angles flow to fill micropores. The utility model forms rib angles during welding by welding the concave cavities on the semicircular arcs of the inner cavities of the upper die and the lower die; when the plastic film is integrated, the rib angles flow to fill micropores under the action of the trimming ridge, and the micropores between the mouth tube and the upper and lower films are closed, so that the phenomenon of micro leakage is avoided. The welding fixture is suitable for being used as a welding fixture for multi-chamber bag mouth pipes.

Description

Multi-chamber bag mouth pipe welding jig

Technical Field

The utility model relates to a multi-chamber bag in the medical field, in particular to a welding jig for a multi-chamber bag mouth tube.

Background

Existing multi-chamber bags are commonly used medical products. The common multi-chamber bag mainly comprises a bag 10, a mouth tube 20 and a sealing plug 30, wherein the bag 10 is filled with liquid medicine, the bag 10 is formed by welding two layers of films, an upper film 11 and a lower film 12, the mouth tube 20 is arranged at one side of the bag 10, and the sealing plug 30 is assembled at the outer end of the mouth tube 20. See fig. 1.

The engagement of the spout 20 with the pouch 10 is accomplished by a combination of welding and shaping processes. Referring to fig. 2, at the welding station: the welding mold 100 is composed of two semicircular molds, an upper welding mold 110 and a lower welding mold 120, and the mouth tube 20 and two layers of films, an upper film 11 and a lower film 12, are welded together in a heated state. Referring to fig. 3, at the shaping station: the cold shaping die 200 is also composed of two semicircular dies, a shaping upper die 210 and a shaping lower die 220, and performs shaping press-fitting of the welded soft mouth tube 20 and the bag 10.

At present, in the welding process of the mouth tube 20 and the upper membrane material 11 and the lower membrane material 12, when the upper die 110 and the lower die 120 are welded to be pressed together, the welding ridge line 130 at the most pointed position of the circular arc of the die is particularly easy to generate incomplete pressing, so that incomplete welding is caused, tiny holes are formed, and the micro leakage phenomenon of the liquid medicine in the bag 10 is caused. The shaping die 200 has the same die shape as the welding die 100, and the cavity formed at the welding station cannot be filled by press fit. In the subsequent shaping, the shaping ridges 230 of the shaping upper die 210 and the shaping lower die 220 do not have an extrusion effect, reduce the micropores, tightly press the mouth tube 20 with the upper film 11 and the lower film 12, and the micropores cannot be controlled. Schematic partial welding of the mouth tube 20 with the upper membrane material 11 and the lower membrane material 12 is shown in fig. 2 and 3.

Disclosure of Invention

Aiming at the problems that micropores exist between a middle mouth pipe of a multi-chamber bag and an upper membrane material and a lower membrane material and cannot be closed, the utility model provides a welding jig for the mouth pipe of the multi-chamber bag. The welding jig solves the technical problem that micropores between a middle mouth pipe of a multi-chamber bag and an upper membrane material and a lower membrane material are closed by arranging concave cavities on semicircular arcs of inner cavities of an upper welding die and a lower welding die.

The utility model solves the technical problems by adopting the scheme that:

a multi-chamber bag mouth pipe welding jig comprises a welding die and a shaping die;

the welding mould is of a split structure, the welding mould comprises an upper welding mould and a lower welding mould, the inner cavities of the upper welding mould and the lower welding mould are of a semicircular arc structure, welding edges are arranged at the tail ends of the semicircular arc edges, and concave cavities are formed in the welding edges, so that when the mouth tube is welded with the upper membrane material and the lower membrane material, part of soft upper membrane material and part of soft lower membrane material are filled into the concave cavities to form redundant rib angles, and the welding mould can be used for filling micropores between the mouth tube and the upper membrane material and between the mouth tube and the lower membrane material;

the shaping mould is of a split structure, and comprises an shaping upper mould and an shaping lower mould, wherein the shaping upper mould and the shaping lower mould are of semi-arc structures, shaping ridge lines are arranged at the tail ends of the semi-arc edges, and when the multi-chamber bag is shaped, the shaping ridge lines squeeze redundant rib angles, so that the rib angles flow to fill micropores, and the micropores are closed to achieve the sealing effect.

In order to further solve the technical problems to be solved, the volume of the concave cavity on the upper welding die and the lower welding die corresponds to the cavity volume of the micropores on the two sides of the mouth tube, so that the rib angles formed in the concave cavity can fill the micropores.

Furthermore, the concave cavity is a triangular groove, so that rib angles are formed conveniently.

Further, the die drawing angle of the triangular groove of the concave cavity is 1-2 degrees.

The welding jig is adopted, and the concave cavities are formed in the semicircular arcs of the inner cavities of the upper die and the lower die through welding, so that part of soft upper film materials and part of soft lower film materials are filled into the concave cavities during welding, and rib angles are formed through storage; during shaping, the rib angles flow under the action of the shaping ridge lines to fill micropores, the soft mouth tube is filled in the cavity, the soft mouth tube is tightly pressed and connected with the upper layer film material and the lower layer film material in a seamless manner, the micropores between the mouth tube and the upper film material and between the mouth tube and the lower film material are closed, the automatic leakage of liquid medicine in the bag of the multi-chamber bag is controlled, and the phenomenon of micro leakage is avoided. Is suitable for being used as a welding jig for multi-chamber bag mouth pipes.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic view of a multi-chamber bag;

FIG. 2 is a schematic diagram of a welding mold in the prior art;

FIG. 3 is a schematic diagram of a prior art shaping mold;

FIG. 4 is a schematic diagram of a welding mold according to the present embodiment;

fig. 5 is a schematic structural diagram of the shaping mold of the present embodiment.

In the figure:

10. the bag is provided with an upper membrane material 11, a lower membrane material 12 and rib angles 13;

20. a mouth tube;

30. a sealing plug;

40. micropores;

100. welding dies 110, welding upper dies 120, welding lower dies 130, welding edge lines 140, and concave cavities;

200. shaping die, 210 shaping upper die, 220 shaping lower die, 230 shaping ridge.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two), and similarly,

"multiple sets" refers to more than two sets (including two sets) and "multiple sheets" refers to more than two sheets (including two sheets).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the technical term "mounted"

The terms "coupled," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly attached, detachably attached, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

According to the drawing, the welding jig for the multi-chamber bag mouth pipe comprises a welding die 100, wherein the welding die 100 is of a split structure, the welding die 100 comprises an upper welding die 110 and a lower welding die 120, the inner cavities of the upper welding die 110 and the lower welding die 120 are of a semicircular arc structure, welding edges 130 are arranged at the tail ends of the semicircular arc edges, the welding edges 130 extrude micropores 40 between a mouth pipe 20 and the upper and lower films 11 and 12 as far as possible, and the welding edges 130 are provided with concave cavities 140, so that when the mouth pipe 20 is welded with the upper and lower films 11 and 12, partial soft upper and lower films 11 and 12 are filled into the concave cavities 140 to form redundant rib angles 13, and the welding jig can be used for filling the micropores 40 between the mouth pipe 20 and the upper and lower films 11 and 12;

the welding jig for the multi-chamber bag mouth pipe further comprises a shaping die 200, the shaping die 200 is of a split structure, the shaping die 200 comprises an shaping upper die 210 and a shaping lower die 220, the shaping upper die 210 and the shaping lower die 220 are of semicircular structures, shaping ridge lines 230 are arranged at the tail ends of the semicircular edges, when the multi-chamber bag is shaped, the shaping ridge lines 230 squeeze redundant rib angles 13, so that the rib angles 13 flow to fill micropores 40, the holes between the mouth pipe 20 and the upper and lower films 11 and 12 are reduced, and the micropores 40 are closed to achieve a sealing effect.

In order to ensure the stability of the structure of the present utility model, the transition arcs or chamfers of the shaping ridges 230 on the shaping upper mold 210 and the shaping lower mold 220 in the shaping mold 200 are smaller than the transition arcs or chamfers of the welding ridges 130 on the welding upper mold 110 and the welding lower mold 120 in the welding mold 100.

To further secure the stability of the structure of the present utility model, the volumes of the cavities 140 of the welding upper die 110 and the welding lower die 120 correspond to the hollow volumes of the micro holes 40 at both sides of the mouth tube 20, so that the rib angles 13 formed in the cavities 140 can fill the micro holes 40.

To optimize the structure of the present utility model, the cavity 140 is a triangular recess to facilitate the formation of the rib angle 13.

As a conventional technical option, the triangular recess of the cavity 140 is provided with inclined surfaces on both sides thereof with a draft angle so that the multichamber bag can be demolded in the welding upper die 110 and the welding lower die 120.

Preferably, the triangular recess of the cavity 140 has a draft angle of 1-2.

The working principle of the embodiment is as follows:

the embodiment aims to solve the problem of closing the micro-holes 40, and the micro-holes 40 are filled in a closed state by matching the welding mold 100 and the shaping mold 200, so as to fundamentally solve the micro-leakage phenomenon.

Therefore, in this embodiment, the local structure of the welding mold 100 is changed, a concave cavity 140 structure is provided at the welding ridge 130 at the end of the edge of the mold for welding the upper mold 110 and the lower mold 120, when the upper film 11, the lower film 12 and the mouth tube 20 are welded in a heated state, the upper film 11 and the lower film 12 are in a molten soft state, at this time, part of the soft upper film 11 and part of the soft lower film 12 are filled into the concave cavity 140 of the mold, and after the welding is completed, the surplus rib angle 13 is formed. This portion of the excess rib angle 13 is forced to compress to fill the micro-holes 40 as it is shaped by the shaping die 200, thereby achieving a sealing effect.

Before the mold is reformed, the leakage phenomenon caused by the tiny holes formed by welding cannot be detected by an effective technical means at present, and only after the liquid medicine in the multi-chamber bag is automatically leaked, the leakage phenomenon can be visually detected by prolonging the time. Compared with the traditional die, the embodiment fundamentally solves and overcomes the formation of tiny holes, and thoroughly solves the phenomenon of tiny leakage.

As shown in fig. 2, the edges of the molds to which the upper mold 110 and the lower mold 120 are welded are not welded with the ridge 130; as shown in fig. 4, the die edges of the welded upper die 110 and the welded lower die 120 are not welded with the ridge 130 provided with the concave cavities 140, and the upper film 11, the lower film 12 and the mouth tube 20 are automatically filled in the positions of the concave cavities 140 in the welded state, so that redundant rib angles 13 are formed. As shown in fig. 5, the rib angle 13 of the excess portion is excessively pressed by the pressure of the shaping die 200 to automatically fill the formed minute holes 40.

In this embodiment, the micro-hole microscopic enlarged view after welding and shaping is clearly seen that the rib angle 13 is extruded and filled after passing through the shaping jig, and the hollow space between the middle upper membrane material 11, the lower membrane material 12 and the mouth tube 20 is fully filled without micro holes.

The description of the present utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (5)

1. A multi-chamber bag mouth pipe welding jig is characterized in that:

comprises a welding mould (100) and a shaping mould (200);

the welding die (100) is of a split structure, the welding die (100) comprises an upper welding die (110) and a lower welding die (120), the inner cavities of the upper welding die (110) and the lower welding die (120) are of a semicircular arc structure, welding ridges (130) are arranged at the tail ends of the semicircular arc edges, and concave cavities (140) are formed in the welding ridges (130), so that when a mouth tube (20) is welded with an upper film material (11) and a lower film material (12), the upper film material (11) and the lower film material (12) in a partial soft state are filled into the concave cavities (140) to form redundant rib angles (13), and the welding die can be used for filling micropores (40) between the mouth tube (20) and the upper film material (11) and between the lower film material (12);

the shaping die (200) is of a split structure, the shaping die (200) comprises an shaping upper die (210) and an shaping lower die (220), the shaping upper die (210) and the shaping lower die (220) are of semi-circular arc structures, shaping ridge lines (230) are arranged at the tail ends of the semi-circular arc edges, and when the multi-chamber bag is shaped, the shaping ridge lines (230) squeeze redundant rib angles (13) so that the rib angles (13) flow to fill the micropores (40), and the micropores (40) are closed to achieve a sealing effect.

2. The multi-chamber bag mouth tube welding jig according to claim 1, characterized in that:

the transition arc or chamfer of the shaping ridge (230) on the shaping upper die (210) and the shaping lower die (220) in the shaping die (200) is smaller than the transition arc or chamfer of the welding ridge (130) on the welding upper die (110) and the welding lower die (120) in the welding die (100).

3. The multi-chamber bag mouth tube welding jig according to claim 1, characterized in that:

the volumes of the concave cavities (140) on the welding upper die (110) and the welding lower die (120) correspond to the hollow volumes of the micropores (40) on both sides of the mouth pipe (20), so that the rib angles (13) formed in the concave cavities (140) can fill the micropores (40).

4. A multi-chamber spout tube welding jig according to claim 3, characterized in that:

the concave cavity (140) is a triangular groove, so that the rib angle (13) is formed conveniently.

5. The multi-chamber bag mouth tube welding jig according to claim 4, wherein:

the die drawing angle of the triangular groove of the concave cavity (140) is 1-2 degrees.