Three-side pre-sealing device for four-side sealed three-dimensional bags

Abstract

The present invention discloses a three-side pre-sealing device for a four-side sealed three-dimensional bag, wherein an edge shaping frame is arranged inside a three-seal fixed frame, an edge conveying module is arranged at the rear side of the edge shaping frame, a hot-melt edge sealing module is arranged at the rear side of the edge conveying module, and a terminal conveying module is arranged at the rear side of the hot-melt edge sealing module. The edge shaping frame is used to realize the indentation forming of the edge sealing part, and then the indentation is laminated and extruded and conveyed by the edge conveying module, and the hot-melt edge sealing module is clamped to realize hot-melt bonding, and then the bonding is transported to the outside through the terminal conveying module. The device has a compact structure design, and realizes the hot-melt forming of the three corners of the four-side sealed three-dimensional bag, providing stable feeding for the next step of food packaging.

Description

Technical Field

[0001] The invention belongs to the technical field of four-side sealed three-dimensional bag forming, and in particular relates to a three-side pre-sealing device for a four-side sealed three-dimensional bag. Background Art

[0002] In the field of food packaging technology, for example, when bagged bread of the French bread type is packaged, it is necessary to use a Figure 1 The bag with four-side sealed three-dimensional structure is currently packaged in a way that the packaging bag is prefabricated in advance and has a single end opening, and a certain amount of bread is put in and the end is sealed to achieve the packaging of the entire bagged food.

[0003] However, the disadvantage of this operation is that the bagging process is basically manual bagging, which is inefficient and has uneven bagging quality. The applicant has designed a set of three-side pre-sealing devices for four-side sealed three-dimensional bags, which can realize the forming of four-side sealed three-dimensional bags through an automated production line. However, during the forming process, a three-side pre-sealing device must be used to realize the pre-forming of such four-side sealed three-dimensional bags. There is no corresponding device on the market that can achieve the above functions. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a three-side pre-sealing device for a four-side sealed three-dimensional bag, which realizes the pre-sealing of three sides of the four-side sealed three-dimensional bag through an automated structure, and realizes stable material supply for the final process of four-side sealing.

[0005] To achieve the above technical objectives, the present invention adopts the following scheme: a three-side pre-sealing device for a four-side sealed three-dimensional bag, which includes a three-seal fixing frame, an edge sealing shaping frame is arranged inside the three-seal fixing frame, an edge sealing conveying module is arranged on the rear side of the edge sealing shaping frame, the rear side of the edge sealing conveying module is a hot melt edge sealing module, and the rear side of the hot melt edge sealing module is an end conveying module, the edge sealing shaping frame is used to realize the indentation forming of the edge sealing part, and then the indentation is laminated and extruded and conveyed by the edge sealing conveying module, clamped in the hot melt edge sealing module to realize hot melt bonding, and then conveyed to the outside through the end conveying module after bonding.

[0006] The edge banding shaping frame includes a gantry frame body, a driving hand wheel is arranged on the gantry frame body, three forming upper dies are arranged at the lower part of the driving hand wheel, a forming protrusion is arranged on the bottom surface of each forming upper die, the starting end of the forming protrusion is arranged as a smooth arc surface, and the end thereof is arranged as a sharp angle; a forming lower die is arranged directly below each forming upper die, and a forming cavity is arranged on each forming lower die, the forming cavity is matched with the forming protrusion, and a forming gap is arranged at the outlet end of the forming cavity, and when the film material passes through the two, the film material is superimposed at the edge banding through the forming gap.

[0007] Two edge banding conveying drive devices are relatively arranged on the edge banding conveying module, each edge banding conveying drive device drives a fixed plate, and each fixed plate is provided with three conveying wheels. After the conveying wheels are driven by the drive device to move relative to each other, three groups of edge banding conveying wheel groups are formed, and the film materials that are squeezed and stacked are moved forward by the edge banding conveying wheel groups.

[0008] The hot melt edge sealing module is provided with two hot melt extrusion driving devices relatively to each other, each hot melt extrusion driving device drives a hot melt base plate, and each hot melt base plate is provided with three hot melt contacts. The hot melt base plates are driven by the hot melt extrusion driving device to move relative to each other to form three groups of hot melt contact groups, so as to perform hot melt edge sealing on the superimposed film materials.

[0009] Two terminal conveying drive devices are relatively arranged on the terminal conveying module, each terminal conveying drive device drives a conveying fixed frame, and at least one conveying fixed frame is provided with three vertical drive motors to drive the conveying wheel to rotate. When the two conveying fixed frames move relative to each other, three drive wheel groups are formed to realize the extrusion, traction and conveying of the edge sealing part after hot melting.

[0010] The edge banding shaping frame is internally provided with a plurality of groups of creasing rollers, each group of creasing rollers comprises two creasing rollers, and the two matching creasing rollers are respectively provided with a matching rotary creasing convex die and a rotary creasing concave die, so that the creasing extrusion molding is realized when the film material with three-sided edge banding passes through.

[0011] The beneficial effects of the present invention are as follows: the present invention is provided with an edge shaping frame inside the three-seal fixed frame through the above structural setting, and an edge conveying module is provided at the rear side of the edge shaping frame, and the rear side of the edge conveying module is a hot-melt edge sealing module, and the rear side of the hot-melt edge sealing module is a terminal conveying module, and the edge shaping frame is used to realize the indentation forming of the edge sealing part, and then the indentation is laminated and extruded and conveyed by the edge conveying module, and the hot-melt edge sealing module is clamped to realize hot-melt bonding, and after bonding, it is transported to the outside through the terminal conveying module. The device has a compact structural design, and realizes the hot-melt forming of the three corners of the four-side sealed three-dimensional bag, which provides stable feeding for the next step of food packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the four-side sealed three-dimensional bag after forming according to the present invention;

[0013] Figure 2 Schematic diagram of the three-side pre-sealing device for a four-side sealed three-dimensional bag Figure Ⅰ ;

[0014] Figure 3 Schematic diagram of the three-side pre-sealing device for a four-side sealed three-dimensional bag Figure II ;

[0015] Figure 4This is a schematic diagram of the internal principle structure of the three-side pre-sealing device for four-side sealed three-dimensional bags:

[0016] Figure 5 This is a schematic diagram of the internal top view of the three-side pre-sealing device for a four-side sealed three-dimensional bag:

[0017] Figure 6 It is a schematic diagram of the three-dimensional structure of the lower molding die;

[0018] Figure 7 It is a schematic diagram of the three-dimensional structure of the upper mold;

[0019] In the accompanying drawings: 1. edge banding shaping frame, 10. three-seal fixing frame, 11. gantry frame, 12. molding upper die, 13. driving hand wheel, 14. molding protrusion, 15. molding lower die, 16. molding cavity, 2. edge banding conveying module, 20. fixing plate, 21. edge banding conveying driving cylinder, 22. conveying wheel, 3. hot melt edge banding module, 30. hot melt bottom plate, 31. hot melt extrusion driving cylinder, 32. hot melt contact, 4. end conveying module, 40. conveying fixing frame, 41. end conveying driving cylinder, 42. vertical driving motor, 43. hot melt driving wheel, 44. hot melt driven wheel, 5. upper indentation roller, 51. rotary indentation punch, 6. lower indentation roller, 61. rotary indentation die, 7. three-seal driving motor, 8. stretching wheel group, 9. four-side sealed three-dimensional bag, 91. edge banding. DETAILED DESCRIPTION

[0020] A three-side pre-sealing device for a four-side sealed three-dimensional bag is used to achieve the following Figure 1 The formation of the three sealed edges 91 in the four-side sealed three-dimensional bag 9 is shown to prepare for the next step of food loading and four-side sealing.

[0021] The three-side pre-sealing device of the four-side sealed three-dimensional bag is used to realize hot-melt sealing of three of the four sealed edges 17 on the four-side sealed three-dimensional bag 9. The device includes a three-seal fixing frame 10, and an edge sealing shaping frame 1 is arranged inside the three-seal fixing frame 10. The rear side of the edge sealing shaping frame 1 is provided with an edge sealing conveying module 2, the rear side of the edge sealing conveying module 2 is a hot-melt edge sealing module 3, and the rear side of the hot-melt edge sealing module 3 is a terminal conveying module 4. The edge sealing shaping frame 1 is used to realize the indentation forming of the edge sealing part, and then the indentation is laminated and extruded and conveyed by the edge sealing conveying module 2, and hot-melt bonding is realized under the clamping of the hot-melt edge sealing module 3. After bonding, it is conveyed to the outside through the terminal conveying module 4.

[0022] The edge sealing conveying module 2, hot melt edge sealing module 3 and the rear end conveying module 4 mentioned above all have clamping and loosening functions. Through this structural setting, the hot melt edge sealing module 3 is prevented from continuously clamping and heating the film material to cause local damage to the film material when the film material conveying is briefly interrupted.

[0023] The edge banding and shaping frame 1 comprises a gantry frame body 11 , on which a driving hand wheel 13 is arranged, which is connected to three upper forming dies 12 arranged at the lower part thereof, and the upper forming dies 12 can be adjusted up and down by the driving hand wheel 13 .

[0024] The device is provided with a molding protrusion 14 on the bottom surface of each molding upper mold 12, the starting end of the molding protrusion 14 is a smooth arc surface, and the end thereof is a sharp angle; a molding lower mold 15 is provided directly below each molding upper mold 12 to match it, and a molding cavity 16 is provided on each molding lower mold 15. When the molding upper mold 12 is combined with the molding lower mold 15, the molding cavity 16 is matched with the molding protrusion 14 and plugged in, and a molding gap is provided at the outlet end of the molding cavity. When the film material passes between the two, the film material is superimposed at the edge sealing position 91 through the molding gap, so as to prepare for the subsequent edge sealing action.

[0025] like Figure 4 , 5 As shown, two edge banding conveying drive cylinders 21 are relatively arranged on the edge banding conveying module 2, each edge banding conveying drive cylinder 21 drives a fixed plate 20, and each fixed plate 20 is provided with three conveying wheels 22. The edge banding conveying drive cylinders 21 drive the upper conveying wheels 22 to move relatively, forming three groups of edge banding conveying wheel groups. The two conveying wheels 22 are clamped and used as a group. The film material superimposed between the forming upper mold 12 and the forming lower mold 15 is vertically compressed and conveyed by the edge banding conveying wheel group to feed the hot melt edge banding module 3.

[0026] The hot melt edge sealing module 3 is provided with two hot melt extrusion driving cylinders 31 relatively, each hot melt extrusion driving cylinder 31 drives a hot melt base plate 30, and each hot melt base plate 30 is provided with three hot melt contacts 32. The hot melt base plates are driven by the hot melt extrusion driving cylinders 31 to move relative to each other to form three groups of hot melt contact groups, thereby realizing hot melt edge sealing of the superimposed film materials.

[0027] Two end conveying drive cylinders 41 are relatively arranged on the end conveying module 4, and each end conveying drive cylinder 41 drives a conveying fixed frame 40. Three vertical drive motors 42 are arranged on one of the conveying fixed frames 40 and drive the hot melt driving wheel 43 to rotate. When the two conveying fixed frames 40 move relative to each other, three driving wheel groups are formed to realize the hot melt driving wheel 43 to extrude the hot melt driven wheel 44 to extrude and pull the edge sealing part after hot melting.

[0028] The edge banding conveying module 2, the hot melt edge banding module 3 and the end conveying module 4 are all relatively driven by relatively installed driving cylinders to achieve the clamping and loosening of the conveying wheel or the hot melt device. This driving structure can be realized through a variety of structures in the machinery industry and is completely implementable for technical personnel in this field. The structural details will not be described here.

[0029] The edge banding shaping frame 1 is internally provided with a plurality of groups of creasing rollers, each group of creasing rollers comprising an upper creasing roller 5 and a lower creasing roller 6, the upper creasing roller being provided with a rotary creasing punch 51, the lower creasing roller 6 being provided with a rotary creasing die 61, through this structural setting, under the drive of the three sealing drive motors 7, the driving of all the creasing rollers is realized.

[0030] Furthermore, the inlet and outlet ends of the three-side pre-sealing device for four-side sealed three-dimensional bags are both provided with stretching wheel groups 8, the purpose of which is to flatten the film material entering the device and the film material exiting the device to prevent the generation of wrinkles.

[0031] The device has a compact structure and realizes the simultaneous formation of four-side sealed three-dimensional bags and food packaging, which improves the working efficiency and packaging quality compared with the prior art. It is an ideal three-side pre-sealing device for four-side sealed three-dimensional bags.

Claims

1. A three-side pre-sealing device for a four-side sealed three-dimensional bag, characterized in that: It includes a three-sealing fixed frame, an edge shaping frame is arranged inside the three-sealing fixed frame, an edge conveying module is arranged at the rear side of the edge shaping frame, a hot-melt edge sealing module is arranged at the rear side of the edge conveying module, and a terminal conveying module is arranged at the rear side of the hot-melt edge sealing module. The edge shaping frame is used to realize the indentation forming of the edge sealing part, and then the indentation is laminated and extruded and conveyed by the edge conveying module, and the hot-melt edge sealing module is clamped to realize hot-melt bonding, and then the bonding is transported to the outside through the terminal conveying module. The edge shaping frame includes a gantry frame body, a driving hand wheel is arranged on the gantry frame body, three upper forming dies are arranged at the lower part of the driving hand wheel, a forming protrusion is arranged on the bottom surface of each upper forming die, the starting end of the forming protrusion is arranged as a smooth arc surface, and the end thereof is arranged as a sharp angle; a lower forming die is arranged directly below each upper forming die, and a forming cavity is arranged on each lower forming die, the forming cavity is matched with the forming protrusion, and a forming gap is arranged at the outlet end of the forming cavity, and when the film material passes through the two, the film material is superimposed at the edge sealing through the forming gap; The edge-sealing conveying module is provided with two edge-sealing conveying driving devices in a relative manner, each edge-sealing conveying driving device drives a fixed plate, and each fixed plate is provided with three conveying wheels. The conveying wheels are driven by the driving device to move relative to each other to form three sets of edge-sealing conveying wheel groups, and the film materials are squeezed and stacked by the edge-sealing conveying wheel groups to move forward; The hot melt edge sealing module is provided with two hot melt extrusion driving devices in a relative manner, each hot melt extrusion driving device drives a hot melt bottom plate, each hot melt bottom plate is provided with three hot melt contacts, and the hot melt bottom plates are driven by the hot melt extrusion driving device to move relative to each other to form three groups of hot melt contact groups, so as to perform hot melt edge sealing on the superimposed film materials; Two terminal conveying drive devices are relatively arranged on the terminal conveying module, each terminal conveying drive device drives a conveying fixed frame, and at least one conveying fixed frame is provided with three vertical drive motors to drive the conveying wheel to rotate. When the two conveying fixed frames move relative to each other, three drive wheel groups are formed to realize the extrusion, traction and conveying of the edge sealing part after hot melting.

2. The three-side pre-sealing device for a four-side sealed three-dimensional bag according to claim 1, characterized in that: The edge banding shaping frame is internally provided with a plurality of groups of creasing rollers, each group of creasing rollers comprises two creasing rollers, and the two matching creasing rollers are respectively provided with a matching rotary creasing convex die and a rotary creasing concave die, so that the creasing extrusion molding is realized when the film material with three-sided edge banding passes through.

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