Apparatus for manufacturing zippers for bags and method for manufacturing the same

Abstract

To provide a bag fastener manufacturing device and method for the same capable of improving work efficiency by minimizing work steps, improving a quality of the bag by firmly connecting the fastener to a frame, and improving user satisfaction.SOLUTION: A bag fastener manufacturing device that is easy to manufacture and allows the fastener to be firmly connected because a frame for connecting the fastener is molded together with the fastener during extrusion molding includes: a raw material supply part 100 that supplies raw materials for molding the frame that forms an opening of the bag; an extrusion molding part 200 for extruding the raw material supplied from the raw material supply part 100; a fastener supplying part 300 that supplies the fastener to the extrusion molding part 200 to fix the fastener to the extrusion molded frame; and a cooling and transporting part 400 for cooling and transporting the frame extruded together with the fastener in the extrusion molding part 200.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a fastener manufacturing apparatus for bags and a manufacturing method thereof. More specifically, the present invention relates to a fastener manufacturing apparatus for bags and a manufacturing method thereof, which are convenient for manufacturing because a frame for connecting fasteners is molded together with the fasteners during extrusion molding, and the fasteners can be firmly connected.

Background Art

[0002] Generally, when going on a long-distance trip such as domestic travel as well as overseas travel, a suitcase is carried by putting change of clothes in a bag for easy arrangement. Such carry-on items will have souvenirs purchased at the travel destination added, so the volume of the stored contents will increase. When returning after the trip, it is common for the volume of the stored contents to increase or the amount of bags to increase compared to when departing.

[0003] FIG. 1 is a perspective view showing a general suitcase. A normal suitcase 1 includes a body 2 formed in a rectangular box shape, and a storage space 2a for storing books, clothes, etc. is provided inside the body 2. A fastener 4 is formed at the edges of the body 2 and the cover 3 so as to open and close the storage space 2a. A moving wheel 5 is provided at one lower end of the body 2 for easy movement, and a carrying handle 6 is provided at the upper end of the body 2 so that the user can easily carry the bag 1 and move.

[0004] As shown in FIG. 2, the fastener 4 applied to such a suitcase 1 has fastener cloth 4a attached by sewing to the inside of the body 2 and the cover 3 of the bag 1 divided on both sides. Tooth shapes 4b, 4b' with a meshing structure are formed on the fastener cloth 4a on both sides. A slider 4c having a handle 4d on the upper surface moves along the tooth shapes 4b, 4b' to close or open the fastener cloth 4a on both sides.

[0005] In this conventional zipper structure, when pressure is applied to the inside of the bag, the zipper fabric 4a easily folds as shown in Figure 3, causing the bag to collapse. This has the problem that the zipper fabric 4a is easily damaged by the continuous repeated action, and the zipper fabric 4a easily separates from the body 2 and cover 3, making it impossible to maintain the bag's original state for a long time.

[0006] Furthermore, if the body 2 and cover 3 of the bag 1 to which the zipper 4 is connected are made of synthetic resin or metal, the zipper 4 will be glued and fixed to the body 2 and cover 3 with adhesive, but this has the problem that the adhesive strength weakens over time, and the zipper 4 can be easily peeled off with even a small force. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Registered Utility Model Gazette No. 20-0345061 of the Republic of Korea (Announced March 18, 2004) [Overview of the project] [Problems that the invention aims to solve]

[0008] The present invention was devised to solve the aforementioned problems, and aims to provide a bag zipper manufacturing apparatus and manufacturing method that eliminates the inconvenience of separately sewing or gluing the zipper to the molded frame as in the conventional method, by connecting the zipper to the frame at the opening of a bag made of hard type synthetic resin or aluminum at the same time as the frame is extruded, thereby minimizing the work process, improving work efficiency, and ensuring that the zipper is firmly connected to the frame, thereby improving the quality of the bag and increasing user satisfaction. [Means for solving the problem]

[0009] A bag zipper manufacturing apparatus according to one embodiment of the present invention for achieving the above objective includes a raw material supply unit for supplying raw materials for forming a frame having an opening portion of a bag, an extrusion molding unit for extruding the raw materials supplied from the raw material supply unit, a zipper supply unit for supplying zippers to the extrusion molding unit to fix the zippers to the extruded frame, and a cooling and transferring unit for cooling and transferring the frame that is extruded together with the zippers in the extrusion molding unit.

[0010] Furthermore, the extrusion molding section may include a supply mold into which the frame raw materials and fasteners are supplied, a mold connected to the supply mold for sandwiching the fastener fabric between the supplied raw materials, and an extrusion mold connected to the mold mold for extruding the frame so that the fasteners are fixed in place.

[0011] Furthermore, the supply mold may have a raw material inlet into which the frame raw material is injected, and a fastener inlet into which the fastener flows in.

[0012] At this time, the fastener inlet can be formed between the raw material inlets so that the fastener can be sandwiched and fixed in place by the frame.

[0013] In addition, the mold can be configured such that the raw material inlet and the fastener inlet can be connected so that the fastener fabric supplied to the fastener inlet can be sandwiched between the raw material injected into the raw material inlet of the supply mold and then extruded.

[0014] Furthermore, the extrusion die may have an extrusion opening formed such that the fastener fabric is sandwiched between the raw material discharged through the mold, and a frame with the fastener fixed to it can be extruded.

[0015] A method for manufacturing a bag fastener according to one embodiment of the present invention may include the steps of: (a) supplying raw materials for forming a bag frame to a raw material supply unit; (b) melting the raw materials supplied to the raw material supply unit and injecting them into an extrusion molding unit; (c) supplying a fastener to be fixed to the frame to an extrusion molding unit; (d) extruding the fastener fabric of the fastener while it is connected to the raw materials supplied to the extrusion molding unit; and (e) cooling the frame on which the fastener is fixed and which is extruded while passing through a cooling transfer unit.

[0016] Furthermore, (f) the step of cutting the frame, which has been cooled by passing through the cooling transfer section, into pieces of a certain size may be further included.

[0017] (c) In the step of supplying the fastener to be fixed to the frame to the extrusion molding section, the fastener fabric may be supplied so as to be sandwiched between the raw materials injected into the extrusion molding section.

[0018] In addition, (d) in the step of extruding the fastener fabric of the fastener while it is connected to the raw material supplied to the extrusion molding section, the fastener fabric is positioned between the raw materials and the fastener can be extruded while it is fixed to the frame by the extrusion molding section. [Effects of the Invention]

[0019] As described in detail above, according to one embodiment of the present invention, when extruding a frame to connect a zipper for opening and closing a bag to the frame, the zipper is supplied along with the injection of synthetic resin or aluminum raw material, and the zipper fabric is sandwiched between the synthetic resin raw material during extrusion molding. This ensures that the zipper is properly and firmly fixed to the frame during the extrusion molding process, preventing the zipper from coming off, thereby improving the quality of the bag and maximizing user satisfaction. [Brief explanation of the drawing]

[0020] [Figure 1]It is a perspective view showing a general suitcase. [Figure 2] It is a cross-sectional view showing a conventional bag fastener. [Figure 3] It is a cross-sectional view showing a state where a conventional bag fastener is crushed by external pressure. [Figure 4] It is a configuration diagram showing a bag fastener manufacturing apparatus according to the present invention. [Figure 5] It is a front view showing a bag fastener manufacturing apparatus according to the present invention. [Figure 6] It is a plan view showing a bag fastener manufacturing apparatus according to the present invention. [Figure 7] It is a perspective view showing an extrusion molding part of a bag fastener manufacturing apparatus according to the present invention. [Figure 8] It is a cross-sectional view showing an extrusion molding part of a bag fastener manufacturing apparatus according to the present invention. [Figure 9] It is a side view showing a supply mold of the extrusion molding part according to FIG. 7. [Figure 10] It is a side view showing a mold frame mold of the extrusion molding part according to FIG. 7. [Figure 11] It is a side view showing an extrusion mold of the extrusion molding part according to FIG. 7. [Figure 12] It is a flowchart showing a method for manufacturing a bag fastener according to the present invention. [Figure 13] It is a perspective view showing a frame extruded together with a fastener through a bag fastener manufacturing apparatus and method according to the present invention. [Figure 14] It is a cross-sectional view showing a frame extruded together with a fastener through a bag fastener manufacturing apparatus and method according to the present invention. [Figure 15] It is a front view showing a connected state of fasteners manufactured through a bag fastener manufacturing apparatus and method according to the present invention.

Embodiments for Carrying Out the Invention

[0021] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. The features and advantages of the present invention, and the means of implementing them, will become clear through the embodiments described below in detail with reference to the attached drawings. However, the embodiments of the present invention described below are merely illustrative and are not intended to limit the scope of the present invention to the embodiments described. Furthermore, the components of each embodiment can be combined in various ways within or between embodiments, as long as there are no other mentions or inconsistencies between them.

[0022] Furthermore, when a certain part is said to "contain" a certain component, this means that it will necessarily contain that component regardless of other components, and does not mean that it is trying to exclude the addition of other components.

[0023] Furthermore, when a specification states that one part is "connected" to another part, this includes not only cases where the parts are "directly connected," but also cases where they are "indirectly" or "electrically connected" through other components or elements in between.

[0024] Furthermore, throughout the specification, any description of each layer (film), region, pattern, or structure being formed "on" or "under" the substrate, each layer (film), region, pad, or pattern includes all cases where it is formed directly or interposed by other layers. The criteria for on or under each layer shall be explained with reference to the drawings.

[0025] Furthermore, expressions such as "first," "second," etc., are used solely for the purpose of distinguishing between multiple components and do not limit the order or other characteristics between components.

[0026] Figure 4 is a configuration diagram illustrating the bag zipper manufacturing apparatus according to the present invention, Figure 5 is a front view illustrating the bag zipper manufacturing apparatus according to the present invention, Figure 6 is a plan view illustrating the bag zipper manufacturing apparatus according to the present invention, Figure 7 is a perspective view illustrating the extrusion molding section of the bag zipper manufacturing apparatus according to the present invention, Figure 8 is a cross-sectional view illustrating the extrusion molding section of the bag zipper manufacturing apparatus according to the present invention, Figure 9 is a side view illustrating the supply mold of the extrusion molding section according to Figure 7, Figure 10 is a side view illustrating the mold frame of the extrusion molding section according to Figure 7, Figure 11 is a side view illustrating the extrusion mold of the extrusion molding section according to Figure 7, Figure 12 is a flowchart illustrating the bag zipper manufacturing method according to the present invention, Figure 13 is a perspective view illustrating a frame extruded together with a zipper through the bag zipper manufacturing apparatus and method according to the present invention, Figure 14 is a cross-sectional view illustrating a frame extruded together with a zipper through the bag zipper manufacturing apparatus and method according to the present invention, and Figure 15 is a front view illustrating the connected state of a zipper manufactured through the bag zipper manufacturing apparatus and method according to the present invention.

[0027] As shown in Figures 4 to 6, the bag zipper manufacturing apparatus according to the present invention may include a raw material supply unit 100, an extrusion molding unit 200, a zipper supply unit 300, a cooling and transfer unit 400, and a cutting unit 500.

[0028] The raw material supply unit 100 supplies raw materials for extruding the frame 20, which will have an opening in the bag 10. At this time, the raw material for the frame 20 can be at least one synthetic resin such as polycarbonate (PC), ABS, polypropylene (PP), polyurethane (PU), or aluminum (Al). More preferably, the raw material for the frame 20 can be a mixture of polycarbonate (PC) and ABS.

[0029] On the other hand, the raw material for extruding the frame 20 is a mixture of polycarbonate (PC) and ABS, and the mixing ratio can be 6-7 parts by weight of polycarbonate (PC) to 3-4 parts by weight of ABS. The higher the specific gravity of polycarbonate (PC), the stronger the material will be.

[0030] Furthermore, the melting point of polycarbonate (PC), which is used as a raw material for the frame 20, is approximately 250-260 degrees Celsius, the melting point of ABS is approximately 180 degrees Celsius, and the melting point of a PC / ABS mixture is approximately 220-230 degrees Celsius. The melting point of the fastener fabric 31 is 260 degrees Celsius or higher. Therefore, by using a raw material mixture of PC and ABS, the frame 20 applied to the present invention can be extruded through the extrusion molding section 200, during which the fastener fabric 31 is sandwiched and fixed inside the frame 20 without melting.

[0031] Referring to Figures 4 and 5, the raw material supply unit 100 may include a raw material storage hopper 110 in which raw materials are stored, and a raw material supply machine 120 connected to the raw material storage hopper 110, which melts the raw materials stored in the raw material storage hopper 110 and supplies them to the extrusion molding unit 200. In this case, the configuration and operating principle of the raw material supply machine 120 are already widely used in extrusion molding machines, so a detailed explanation thereof will be omitted.

[0032] The extrusion molding unit 200 is connected to the raw material supply unit 100 and extrudes the raw material supplied from the raw material supply unit 100 onto the frame 20.

[0033] Referring to Figures 7 and 8, the extrusion molding unit 200 may include a supply mold 210, a mold mold 220, and an extrusion mold 230.

[0034] Referring to Figure 9, the supply mold 210 is connected to the raw material supply unit 100 to supply synthetic resin or aluminum raw materials, and fasteners 30 can also be supplied through the fastener supply unit 300. Therefore, the fastener fabric 31 of the fastener 30 can be positioned inside the raw materials supplied to the supply mold 210.

[0035] Referring to Figure 8, the supply mold 210 may have a raw material injection port 211 formed through the front and back for which synthetic resin raw material is injected.

[0036] Furthermore, the raw material inlet 211 is formed with at least one or more, and different raw materials can be injected into each raw material inlet 211 in order to make the hue and other characteristics of the extruded frame 20 different.

[0037] Furthermore, the supply mold 210 may have a fastener inlet 212 formed for the fastener 30 to flow in through the fastener supply section 300. In this case, as shown in Figure 9, the fastener inlet 212 may be formed between the raw material inlet 211 so that the fastener fabric 31 of the fastener 30 is sandwiched and fixed in the frame 20.

[0038] On the other hand, a film inlet 213 may be formed in the raw material inlet 211 for coating the surface of the frame 20 with the film 40 wound onto the film winding roller 50. Therefore, when the synthetic resin raw material is injected and extruded, the film 40 is supplied to the film inlet 213, and the surface of the frame 20 can be coated with the film 40 as shown in Figure 14. At this time, the film 40 coated on the surface of the frame 20 can have a variety of hues and patterns.

[0039] The mold 220 is connected to the supply mold 210 and can guide the raw material injected from the raw material supply unit 100 and the fastener 30 supplied from the fastener supply unit 300 so that they are sandwiched between the raw material.

[0040] Referring to Figure 10, the mold 220 can have a raw material inlet 221 and a fastener inlet 222 connected to each other, so that the fastener 30 can be fixed to the frame 20 when the fastener fabric 31, which flows into the fastener inlet 212, is sandwiched between the raw material injected into the raw material inlet 211 of the supply mold 210 and extruded. As a result, when the raw material injected into the raw material inlet 221 is extruded into the frame 20, the fastener fabric 31 can be sandwiched and fixed inside the frame 20.

[0041] The extrusion die 230 is connected to the mold die 220 and can be used to extrude the zipper fabric 31 of the zipper 30 so that it is fixed to the frame 20.

[0042] Referring to Figure 11, the extrusion die 230 may have an extrusion opening 231 formed so that the fastener fabric 31 is sandwiched in the raw material discharged through the mold die 220, and a frame 20 with the fastener 30 fixed to it can be extruded. On the other hand, the extrusion opening 231 may have a raw material inlet 231a and a fastener inlet 231b connected, and the raw material inlet 231a may be formed to be the same as the cross-sectional shape of the frame 20.

[0043] The fastener supply unit 300 supplies the fastener 30 to the extrusion molding unit 200 in order to fix the fastener 30 to the extrusion molding frame 20. Referring to Figure 15, the fastener 30 is provided with fastener fabric 31 fixed to both sides of the frame 20, with teeth 32 attached to each of the fastener fabrics 31, and a slider 33 having a handle 34 is provided to connect or separate the teeth 32 while moving forward or backward along the teeth 32.

[0044] Referring to Figures 5 and 6, the fastener supply unit 300 may include a support frame 310 provided on the side of the extrusion molding unit 200, a winding roller 320 connected to the support frame 310 for winding up the fastener 30, a transfer roller 330 connected to the support frame 310 for transferring the fastener 30 wound on the winding roller 320 to the extrusion molding unit 200, and a drive belt 340 connected to the transfer roller 330 for rotating the transfer roller 330 to transfer the fastener 30. In this case, the drive belt 340 may be connected to a motor (not shown) and rotated by the motor.

[0045] The cooling and transfer section 400 cools and transfers the frame 20, which is extruded together with the fastener 30 in the extrusion molding section 200. Meanwhile, the inside of the cooling and transfer section 400 may be filled with cooling water to cool the frame 20 being extruded.

[0046] The cutting section 500 is linked to the cooling and transfer section 400 and cuts the frame 20, which includes the fastener 30 that is cooled and transferred, into pieces of a certain size.

[0047] The zipper fabric 31 is sandwiched and fixed inside the frame 20, which is extruded by the aforementioned apparatus, so that the zipper 30 cannot be separated or peeled off from the frame 20.

[0048] Along with this, the frame 20 to which the fastener 30, manufactured by extrusion molding through the extrusion molding section 200 and cooling through the cooling transfer section 400, is attached can be manufactured in a length of approximately 1.5 to 2 m per minute. On the other hand, if the frame 20 is extruded at a rate of 1.5 m or less per minute, productivity will decrease, and the high heat of the extrusion molding section 200 will prevent smooth extrusion molding into the desired shape. If it is extruded at a rate of 2 m or more, smooth cooling will not occur during cooling through the cooling transfer section 400, resulting in inferior quality.

[0049] As shown in Figure 12, in one embodiment of the present invention, the method for manufacturing a bag zipper first involves supplying raw materials to the raw material supply unit 100 for extruding a frame 20 having an opening for the bag 10 (S100). At this time, the raw materials can be at least one synthetic resin such as polycarbonate (PC), ABS, polypropylene (PP), polyurethane (PU), or aluminum (Al).

[0050] Then, (b) the raw materials supplied to the raw material supply unit 100 are melted and injected into the extrusion molding unit 200 (S200).

[0051] Along with this, (c) raw material is injected into the extrusion molding section 200 and the fastener 30 is supplied to the extrusion molding section 200 (S300).

[0052] The raw material can be injected into the raw material inlet 211 of the extrusion molding section 200, and the fastener 30 can be supplied to the fastener inlet 212 so that the fastener fabric 31 is sandwiched between the raw materials injected into the extrusion molding section 200.

[0053] (d) The fastener fabric 31 of the fastener 30 can be attached to the raw material supplied to the extrusion molding section 200 and extruded, thereby forming the fastener 30 fixed to the frame 20 (S400).

[0054] When the raw material and the fastener 30 are supplied to the supply mold 210 of the extrusion molding unit 200, and the frame 20 is extruded by passing through the extrusion mold 230, the fastener fabric 31 is positioned between the raw materials, and as the frame 20 is extruded by the extrusion molding unit 200, the fastener fabric 31 is sandwiched inside the frame 20, so that the fastener 30 can be extruded in a state where it is fixed to the frame 20.

[0055] Then, (e) the frame 20, with the fastener 30 fixed to it, is extruded and then passed through the cooling transfer section 400 to be cooled (S500). At this time, the cooling transfer section 400 is filled with cooling water, and the frame 20 being extruded and transferred is transferred while immersed in the cooling water, which can increase the cooling efficiency.

[0056] Thereafter, (f) the frame 20 to which the fastener 30, which has been cooled by passing through the cooling transfer section 400, is cut to a certain size (S600).

[0057] As described above, in this invention, when raw materials supplied to the raw material supply unit 100 are introduced into the extrusion molding unit 200 in order to extrude a frame 20 to which a fastener 30 for opening the inside of the bag 10 is connected, the fastener 30 is supplied to the inside of the raw materials injected into the extrusion molding unit 200.

[0058] Then, as the fastener 30 is supplied and the frame 20 is extruded by the extrusion molding unit 200, the fastener fabric 31 is formed while sandwiched between the frame 20.

[0059] Therefore, since the frame 20 is formed with the fastener 30 fixed to the frame 20 during the extrusion process, the fastener 30 is fixed to the frame 20 simultaneously with the extrusion molding of the frame 20, eliminating the need to fix the fastener to the frame through separate work such as sewing or adhesive, as in the conventional method, making the work more convenient.

[0060] Furthermore, because the zipper fabric 31 is extruded while sandwiched between the frame 20, the zipper fabric 31 will not come loose or peel off from the frame 20 even under strong impact, thereby improving the quality of the bag 10 and allowing it to be used for a long period of time.

[0061] The above detailed description of the present invention has described only specific embodiments thereof. However, it should be understood that the present invention is not limited to the specific forms mentioned in the detailed description, but rather includes all variations, equivalents, and substitutes that fall within the spirit and scope of the invention as defined by the appended claims.

[0062] In other words, the present invention is not limited to the specific embodiments and descriptions described above, and any person with ordinary skill in the art to which the present invention belongs can carry out various modifications without departing from the gist of the present invention as claimed in the claims, and such modifications will also fall within the scope of protection of the present invention. [Explanation of Symbols]

[0063] 10: Bag 20: Frame 30: Zipper 31: Zipper fabric 32: Tooth marks 33: Slider 34: Handle 40: Film 50: Film winding roller 100: Raw material supply department 110: Raw material storage hopper 120: Raw material feeder 200: Extrusion molding section 210: Supply mold 211, 221, 231a: Raw material injection port 212, 222, 231b: Zipper inlet 213: Film loading port 220: Formwork and molds 230: Extrusion mold 231: Extrusion molding port 300: Fastener supply unit 310: Support frame 320: Winding roller 330: Transfer roller 340: Drive belt 400: Cooling transfer section 500: Cutting section

Claims

1. A raw material supply unit that supplies raw materials for forming a frame having an open portion of a bag; An extrusion molding unit for extruding the raw material supplied from the raw material supply unit; A fastener supply unit that supplies fasteners to the extrusion molding unit in order to fix the fasteners to the extruded frame; and The extrusion molding section includes a cooling and transfer section that cools and transfers the frame, which is extruded together with the fastener in the aforementioned extrusion molding section. The extrusion molding section is A supply mold into which the raw materials and fasteners of the frame are supplied, A mold for sandwiching a fastener cloth between the raw materials supplied and connected to the aforementioned supply mold, A bag fastener manufacturing apparatus, including an extrusion die for extruding a frame so that the fastener is fixed to the aforementioned mold.

2. The bag zipper manufacturing apparatus according to claim 1, characterized in that the supply mold has a raw material inlet formed into which the raw material for the frame is injected, and a zipper inlet formed into which the zipper flows.

3. The bag zipper manufacturing apparatus according to claim 2, characterized in that the zipper inlet is formed between the raw material inlets so that the zipper can be sandwiched and fixed in the frame.

4. The bag zipper manufacturing apparatus according to claim 1, characterized in that the mold is connected such that the raw material inlet and the zipper fabric supplied to the zipper inlet can be sandwiched between the raw material injected into the raw material inlet of the supply mold and extruded.

5. The bag zipper manufacturing apparatus according to claim 1, characterized in that the extrusion molding port of the extrusion die is formed such that a frame with the zipper fixed in place can be extruded by being discharged through the mold die and the zipper fabric portion being sandwiched between the raw material.

6. (a) The step of supplying raw materials for forming the frame of the bag to the raw material supply unit; (b) A step of dissolving the raw material supplied to the raw material supply unit and injecting it into the extrusion molding unit; (c) A step of supplying the fastener to be fixed to the frame to the extrusion molding section; (d) The step of extruding the material supplied to the extrusion molding section with the fastener fabric of the fastener attached to it; and (e) The frame on which the fastener is fixed and which is extruded is cooled as it passes through the cooling transfer section, A method for manufacturing a zipper for a bag, characterized in that, in the step of supplying the zipper to be fixed to the frame to the extrusion molding section, the zipper fabric is supplied so as to be sandwiched between the raw materials injected into the extrusion molding section.

7. The method for manufacturing a bag fastener according to claim 6, further comprising the steps of (e) cooling the frame on which the fastener is fixed and extruded as it passes through a cooling transfer section, and (f) cutting the frame that has been cooled as it passes through the cooling transfer section into pieces of a certain size.

8. The method for manufacturing a zipper for a bag according to claim 6, characterized in that, in the step of extruding the zipper fabric of the zipper while it is connected to the raw materials supplied to the extrusion molding section, the zipper fabric is positioned between the raw materials and the zipper is fixed to the frame by the extrusion molding section and extruded.

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