Equipment for preparing the side gusset triangle structure of packaging bags and bag making machine equipped with such equipment

Abstract

This utility model provides a packaging bag side gusset triangular structure preparation equipment and bag making machine, including a side gusset conveying mechanism that continuously conveys side gusset film material; a triangular template set at the front end of the side gusset film material for positioning the triangular template; the triangular template and a triangular positioning plate engaging to be positioned according to a preset position of the triangular positioning plate; a folding structure with a push plate and a driving mechanism for folding the side gusset film material above the triangular positioning plate to form a triangular structure; and a heat sealing structure for heat sealing the triangular structure formed by the push plate folding to the side gusset film material. This preparation equipment has a high degree of mechanization and a wide range of applications; the cooperation between the triangular positioning plate, the triangular template, and the push plate helps improve the preparation efficiency of the side gusset triangular structure; the grooves in the triangular template and the gaps between the two corners facilitate the movement of the triangular template in and out during the preparation process; and the driving mechanism uses a servo motor to improve the accuracy of the preparation.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag manufacturing, specifically to a packaging bag side gusset triangle structure manufacturing equipment and a bag making machine having the equipment. Background Technology

[0002] Packaging bags are used to package various items, facilitating their transportation and storage during distribution. Square-bottom bags are a type of packaging bag structure, characterized by a square bottom, at least two main faces surrounding the square bottom, and two side gussets. This gives the bag a more three-dimensional structure, making it easier to place and leading to its widespread use in recent years. This technical solution aims to provide equipment for rapidly preparing the triangular side gusset structure of packaging bags, as well as a bag-making machine equipped with this equipment. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects of the prior art and provide a packaging bag side gusset triangle structure preparation equipment and a bag making machine with the equipment, so as to facilitate the rapid preparation of packaging bag side gusset triangle structures.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A device for preparing a side gusset triangle structure for packaging bags, comprising at least: The side gusset conveyor continuously conveys the side gusset film material to prepare the gusset structure on both sides of the packaging bag. A triangular positioning plate, wherein the triangular template is disposed at the front end of the side gusset membrane material, is used to position the triangular template and assist in forming the triangular structure of the side gusset membrane material; A triangular template is fitted with the triangular positioning plate and positioned at a preset position by the triangular positioning plate. The triangular template is located above the side gusset membrane and on the side of the side gusset membrane that forms a triangular structure. A push-folding structure has a push plate and a driving mechanism. The driving mechanism is connected to the push plate and drives the push plate to move. The push plate is placed between the side gusset membrane and the triangular positioning plate and is used to fold the side gusset membrane above the triangular positioning plate to form a triangular structure. A heat-sealing structure is used to heat-seal the triangular structure formed by folding the push plate together with the side gusset membrane material.

[0005] Furthermore, the triangular positioning plate is a plate-shaped structure, and the side of the plate-shaped structure facing the conveying direction of the side accordion has a concave triangular surface. The triangle containing the concave triangular surface is an isosceles triangle, and the perpendicular bisector of the isosceles triangle coincides with the centerline of the side accordion.

[0006] Furthermore, the intersection of the concave inner surface of the triangle positioning plate is close to the front end face of the side accordion conveying direction; the two inner surfaces of the concave inner surface of the triangle positioning plate guide the two front corners of the side accordion conveying direction to tilt upwards when they contact the triangle positioning plate.

[0007] Furthermore, the bottom side plane of the triangular positioning plate is attached to the side accordion conveying platform, and the part of the upper surface with the concave surface of the corresponding triangle has an inclined surface to facilitate and guide the two front corners of the side accordion to tilt upward.

[0008] Furthermore, the triangular template has a plate body and an inner groove, the inner groove being located on the plate body, the plate body having two corner portions and a connecting portion connecting the two corner portions, and the inner groove being located between the two corner portions and the connecting portion of the plate body.

[0009] Furthermore, the two corner sections of the plate have the same structure, having a wide section and a narrow section. The narrow sections of the two corner sections are arranged opposite each other, and there is a gap between the narrow sections of the two corner sections, which communicates with the inner groove. The wide sections of the two corner sections are connected to the connecting part to form an integral structure.

[0010] Furthermore, the outer edges of the two corners of the plate have a sloping structure in the longitudinal direction, so that the push plate can fold the two front corners of the side accordion to form a side accordion triangular structure.

[0011] Furthermore, the inner groove of the plate has two straight edges and an arc edge connecting the two straight edges.

[0012] Furthermore, the triangular template is also connected to a push-pull mechanism, which is connected to the outer side of the connecting part of the triangular template. The push-pull mechanism is used to push the triangular template above the side gusset membrane and to pull out the triangular template after the hot-sealing structure is hot-sealed.

[0013] Furthermore, the push plate is a plate-shaped structure with at least one longitudinal inclined surface. This longitudinal inclined surface is a vertically arranged surface with a certain tilt angle in the horizontal direction relative to the moving direction of the side accordion. The tilt angle of this horizontal inclined surface is consistent with the tilt angle in the horizontal direction of the two inner sides of the triangular positioning plate and the two outer sides of the two corners of the triangular template plate.

[0014] Furthermore, the driving mechanism adopts a servo motor, which is connected to the push plate. The servo motor drives the push plate to move between the two upturned corners of the side accordion and the triangular positioning plate, and continues to push the push plate until the two upturned corners of the side accordion fold over and cover the triangular template.

[0015] Furthermore, the driving mechanism drives the push plate to move in a direction perpendicular to the horizontal inclined plane of the push plate.

[0016] Furthermore, the hot-sealing structure is positioned above the two corners of the folded side gusset, and the hot-sealing position is located within the inner groove where the two corners of the side gusset overlap with the side gusset film.

[0017] This technical solution also provides a bag making machine, which has at least the aforementioned equipment for preparing the side gusset triangle structure of packaging bags.

[0018] Based on the above-mentioned equipment and bag-making machine for preparing the side gusset triangle structure of packaging bags, the following technical effects are achieved: the equipment has a high degree of mechanization and a wide range of applications; the cooperation between the triangular positioning plate, the triangular template, and the push plate helps to improve the preparation efficiency of the side gusset triangle structure; the setting of the inner groove of the triangular template and the gap between the two corners facilitates the movement of the triangular template into and out during the preparation process; and the drive mechanism is driven by a servo motor, which improves the accuracy of the preparation. Attached Figure Description

[0019] Figure 1-8 This is a schematic diagram of the gusseted triangular structure on the side of the packaging bag of this utility model.

[0020] in: 1. Side accordion; 10. Triangular structure; 11. Hot-sealing position; 12. Two front corners; 2. Triangular positioning plate; 20. Fixing hole; 21. Concave surface of the triangle; 210. Intersection point (vertex); 211. Inner surface; 3. Triangular template; 30. Panel; 300. Corner; 3000. Narrow section; 3001. Wide section; 3002. Gap; 3003. Sloping structure; 301. Connecting part; 31. Inner groove; 310. Straight edge; 311. Curved edge; 40. Push plate; 400. Sloping surface; 401. Right angle surface A; 402. Right angle surface B; 403. Sloping surface; 41. Servo motor. Detailed Implementation

[0021] The following embodiments, in conjunction with the accompanying drawings, further illustrate the specific implementation of the packaging bag side accordion triangle structure preparation equipment of this utility model. The packaging bag side accordion triangle structure preparation equipment of this utility model is not limited to the descriptions in the following embodiments.

[0022] This embodiment provides a device for preparing a side gusset triangle structure for a packaging bag, comprising at least: The side gusset conveyor continuously conveys the side gusset 1 film material to prepare the side gusset 1 structure of the packaging bag. The triangular positioning plate 2 and the triangular template 3 are set at the front end of the side gusset 1 membrane material to position the triangular template 3 and assist in forming the triangular structure 10 of the side gusset 1 membrane material. The triangular template 3 is positioned in a position that matches the triangular positioning plate 2. The triangular template 3 is located above the membrane material of the side gusset 1 and on one side of the membrane material of the side gusset 1 forming the triangular structure 10. The push-folding structure has a push plate 40 and a drive mechanism. The drive mechanism is connected to the push plate 40 and drives the push plate 40 to move. The push plate 40 is placed between the side gusset 1 membrane material and the triangular positioning plate 2 and is used to fold the side gusset 1 membrane material above the triangular positioning plate 2 to form a triangular structure 10. The hot-sealing structure is used to hot-seal the triangular structure 10 formed by folding the push plate 40 together with the membrane material of the side gusset 1.

[0023] Based on the above structure, combined with Figure 1-5 As shown, a more specific description will be provided.

[0024] The side gusset triangular structure preparation equipment in this embodiment is applicable to existing bag making machines. It can be installed independently or added to the side gusset preparation equipment of an existing bag making machine. The equipment for preparing the side gusset triangular structure 10 has at least the following structure: A film material conveying mechanism, which can be an existing film material conveying mechanism, is used to continuously and uninterruptedly convey the film material for preparing the main film of the packaging bag to the bag making machine.

[0025] The side gusset conveyor mechanism can be an existing side gusset conveyor mechanism, used to continuously and uninterruptedly convey the side gusset 1 film material to the bag making machine, and cut the side gusset 1 film material after covering the packaging bag film material to prepare the side gusset 1, and form a triangular structure 10 on the side gusset 1.

[0026] The triangular positioning plate 2 is placed on the bag making machine and is located at the front end of the side gusset 1 conveyor. The side of the triangular positioning plate 2 opposite to the side gusset 1 is provided with a fixing hole 20. The triangular positioning plate 2 is fixed on the bag making machine through the fixing hole 20 to fix the triangular positioning plate 2 in a preset position so as to facilitate the preparation of the triangular structure 10 of the side gusset 1. In this embodiment, the triangular positioning plate 2 is a plate-shaped structure. The side of the plate-shaped structure facing the conveying direction of the side gusset 1 has a triangular concave surface 21. The triangle containing the triangular concave surface 21 is an isosceles triangle. The vertex 210 of the isosceles triangle faces the position of the fixing hole 20 on the triangular positioning plate 2. The perpendicular bisector drawn from the vertex 210 of the isosceles triangle coincides with the center line of the side gusset 1.

[0027] The intersection point (i.e., the vertex of the triangle) 210 of the concave surface 21 of the triangle positioning plate is close to the front end face of the side accordion 1 in the conveying direction and stops at the preset position. During the conveying process of the side accordion 1, the two inner surfaces 211 of the concave surface 21 of the triangle positioning plate 2 are inclined relative to the conveying direction of the side accordion 1. The two front corners 12 of the side accordion 1 contact the concave surface 21 of the triangle positioning plate 2 first compared with the center line of the side accordion 1, so that the two front corners 12 of the side accordion 1 tilt upward when they contact the triangle positioning plate 2 during the conveying process.

[0028] In some embodiments, the bottom side plane of the plate-like structure of the triangular positioning plate 2 is attached to the conveying platform of the side accordion 1, and the part of the upper surface with the concave surface 21 of the corresponding triangle has an inclined surface to facilitate and guide the two front corners 12 of the side accordion 1 to tilt upwards; in other embodiments, the upper and lower surfaces of the triangular positioning plate 2 are both flat, and no inclined surface is provided for guidance. During the conveying process of the side accordion 1, it is sufficient to ensure that the two front corners 12 of the side accordion 1 can tilt upwards when they contact the triangular positioning plate 2.

[0029] In this embodiment, the triangular template 3 is used to initially shape the triangular structure 10 of the side gusset 1. The triangular template 3 is placed above the membrane material of the side gusset 1 with its two front corners 12 curving upwards. An external push-pull mechanism (not shown in the attached figure) is connected to facilitate moving the triangular template 3 in and out. The push-pull mechanism can be driven by a servo motor. In actual use, other drive mechanisms or push-pull mechanisms can also be used for pushing and pulling. It is only necessary to move the triangular template 3 into the side gusset 1 and remove the triangular template 3 after the triangular structure 10 is shaped.

[0030] More specifically, the triangular template 3 has a plate 30 and an inner groove 3131. The inner groove 31 is located on the plate 30. The plate 30 has two corner portions 300 and a connecting portion 301 connecting the two corner portions 300. The inner groove 31 is located between the two corner portions 300 and the connecting portion 301 of the plate 30. The two corner portions 300 of the plate 30 have the same structure, having a wide portion 3001 and a narrow portion 3000. The narrow portions 3000 of the two corner portions 300 are arranged opposite to each other, and the narrow portions 3000 of the two corner portions 300 are... There is a gap 3002 between the two corners 300, which communicates with the inner groove 31; the wide part 3001 of the two corners 300 is connected to the connecting part 301 to form an integral structure; wherein, the outer side of the two corners 300 of the plate 30 has a slope structure 3003 in the longitudinal direction, so as to facilitate the push plate 40 to fold the two front corners 12 of the side gusset 1 to form the triangular structure 10 of the side gusset 1; the inner groove 31 of the plate 30 has two straight edges 310 and an arc edge 311 connected to the two straight edges 310.

[0031] More specifically, the push plate 40 is a plate-shaped structure. This plate-shaped structure can adopt a commonly used geometric shape, but the geometric surface has at least one longitudinal inclined surface 400. The longitudinal inclined surface 400 is a vertically arranged surface, and its horizontal direction has a certain tilt angle relative to the moving direction of the side accordion 1. The tilt angle of the longitudinal inclined surface 400 is consistent with the horizontal tilt angle of the two inner sides 211 of the triangular positioning plate 2 and the outer sides of the two corners 300 of the triangular template 3 plate body 30.

[0032] In this embodiment, the push plate 40 body is provided with an irregular quadrilateral structure in the vertical direction, having two perpendicular right angle surfaces A401 and B402. The drive mechanism is connected to one of the right angle surfaces B402 and intersects with two other inclined surfaces 403 adjacent to the two perpendicular right angle surfaces (401, 402). The angle α formed by the connection of the two inclined surfaces 403 is between 90° and 180°. The inclined surface connected to the right angle surface B where the drive mechanism is connected is the aforementioned longitudinal inclined surface 400.

[0033] The drive mechanism uses a servo motor 41, which is connected to the push plate 40. The servo motor 41 drives the push plate 40 to move between the two front corners 12 of the side accordion 1 that are raised upwards and the triangular positioning plate 2. The push plate 40 is then pushed until the two front corners 12 of the side accordion 1 are folded over and cover the triangular template 3. The direction of movement of the push plate 40 driven by the drive mechanism is perpendicular to the longitudinal inclined surface 400 of the push plate 40.

[0034] The hot-sealing structure is positioned above the two corners of the folded side gusset 1, and the hot-sealing position 11 is located in the part where the two corners of the inner groove 31 overlap with the film material of the side gusset 1. In actual operation, the width of the hot-sealing position 11 is smaller than the width of the gap 3002 between the narrow parts 3000 of the two corners 300 of the plate 30, so that when the hot-sealing process is completed, the gap 3002 between the narrow parts 3000 can avoid the obstruction of the hot-sealing position 11 and smoothly move out of the triangular template 3 when the push-pull mechanism pulls out the triangular template 3.

[0035] It should be noted that during the preparation of the triangular structure 10 of the side accordion 1, the insertion of the triangular template 3, the pressing of the push plate 40, and the hot sealing of the hot sealing structure can all be completed at the same station.

[0036] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that is usually placed during use. They are only for the convenience of description and do not indicate that the device or structure referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A packaging bag side gusset triangular structure making apparatus characterized by, At least including: The side gusset conveyor continuously conveys the side gusset film material to prepare the gusset structure on both sides of the packaging bag. A triangular positioning plate is disposed at the front end of the side gusset membrane material to position the triangular template and assist in forming the triangular structure of the side gusset membrane material. A triangular template is fitted with the triangular positioning plate and positioned at a preset position by the triangular positioning plate. The triangular template is located above the side gusset membrane and on the side of the side gusset membrane that forms a triangular structure. A push-folding structure has a push plate and a driving mechanism. The driving mechanism is connected to the push plate and drives the push plate to move. The push plate is placed between the side gusset membrane and the triangular positioning plate and is used to fold the side gusset membrane above the triangular positioning plate to form a triangular structure. A heat-sealing structure is used to heat-seal the triangular structure formed by folding the push plate together with the side gusset membrane material.

2. The apparatus for producing a gusseted bag according to claim 1, wherein The triangular positioning plate is a plate-shaped structure. The side of the plate-shaped structure facing the conveying direction of the side accordion has a concave triangular surface. The triangle containing the concave triangular surface is an isosceles triangle, and the perpendicular bisector of the isosceles triangle coincides with the centerline of the side accordion.

3. The apparatus of claim 2, wherein, The intersection of the concave inner surfaces of the triangle positioning plate is close to the front end face of the side accordion conveying direction; the two inner surfaces of the concave inner surfaces of the triangle positioning plate guide the two front corners of the side accordion conveying direction to tilt upwards when they contact the triangle positioning plate.

4. The apparatus of claim 3, wherein the apparatus further comprises a first side panel folding mechanism configured to fold the first side panel of the bag along the first fold line. The triangular template has a plate body and an inner groove. The inner groove is located on the plate body. The plate body has two corners and a connecting part connecting the two corners. The inner groove is located between the two corners of the plate body and the connecting part. The two corner sections of the plate have the same structure, with a wide section and a narrow section. The narrow sections of the two corner sections are arranged opposite each other, and there is a gap between the narrow sections of the two corner sections, which communicates with the inner groove. The wide sections of the two corner sections are connected to the connecting part to form an integral structure. The inner groove of the plate has two straight sides and an arcuate side connecting the two straight sides.

5. The apparatus of claim 4, wherein the apparatus further comprises a first side panel folding mechanism configured to fold the first side panel of the bag into the first side panel gusset. The outer edges of the two corners of the plate have a sloping structure in the longitudinal direction, so that the push plate can fold the two front corners of the side accordion to form a side accordion triangular structure.

6. The apparatus of claim 5, wherein the apparatus further comprises a first side panel folding mechanism configured to fold the first side panel of the bag along the first fold line. The triangular template is also connected to a push-pull mechanism, which is connected to the outer side of the connecting part of the triangular template. The push-pull mechanism is used to push the triangular template above the side gusset membrane and to pull out the triangular template after the hot-sealing structure is hot-sealed.

7. The apparatus of claim 6, wherein the apparatus further comprises a first side panel folding mechanism configured to fold the first side panel of the bag into the gusset triangle structure. The push plate is a plate-shaped structure with at least one longitudinal inclined surface. This longitudinal inclined surface is a vertically arranged surface with a certain tilt angle in the horizontal direction relative to the moving direction of the side accordion. The tilt angle of this horizontal inclined surface is consistent with the tilt angle in the horizontal direction of the two inner sides of the triangular positioning plate and the two outer sides of the two corners of the triangular template plate.

8. The apparatus of claim 7, wherein the apparatus further comprises a first side panel folding mechanism configured to fold the first side panel of the bag into the gusset triangle structure. The driving mechanism uses a servo motor, which is connected to the push plate. The servo motor drives the push plate to move between the two upturned corners of the side accordion and the triangular positioning plate, and continues to push the push plate until the two upturned corners of the side accordion fold over and cover the triangular template. The direction of movement of the push plate driven by the driving mechanism is perpendicular to the horizontal inclined surface of the push plate.

9. The apparatus of claim 8, wherein, The heat-sealing structure is placed above the two corners of the side gusset after folding, and the heat-sealing position is located in the inner groove where the two corners of the side gusset overlap with the side gusset film.

10. A bag making machine characterized by, The bag making machine has at least one of the packaging bag side gusset triangle structure preparation devices as described in any one of the preceding claims 1-9.

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