Paper box triangular stand column forming structure

Abstract

The utility model belongs to the field of paper box forming, and provides a paper box triangular stand column forming structure which comprises an upper die assembly, a lower die assembly and a forming assembly. The upper die assembly comprises an upper die base and a plurality of stand column male dies connected to the upper die base. The lower die assembly comprises a plurality of lower die plates and a plurality of supporting plates which are arranged outside the target paper box; the forming assembly comprises a pushing head and a turning knife which can move along an arc-shaped path.

Description

Technical Field

[0001] This application belongs to the field of carton forming, and particularly relates to a forming structure for triangular columns of a carton. Background Art

[0002] In the packaging industry, cartons, as a common packaging form, are widely used in the packaging and transportation of various products. In order to enhance the support strength and stability of cartons, it is generally necessary to design support structures inside the cartons. For example, some inner triangular column structures designed using the stability of triangles have gradually emerged in the market. Since the inner triangular columns of such cartons are arranged inside the cartons and the forming process is complex, at present, the forming of triangular columns in such cartons still generally relies on manual operation, which severely restricts the production efficiency of cartons. Therefore, it is necessary to solve the above technical problems. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a forming structure for triangular columns of a carton to solve the technical problem of low forming efficiency of triangular columns in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by this application is: to provide a forming structure for triangular columns of a carton, which is used to form triangular columns inside a target carton. The target carton includes a bottom wall, a short side wall, and a long side wall that are respectively vertically connected to the bottom wall. It further includes an inner folding edge vertically connected to the short side wall, a first extension section connected to the inner folding edge, and a second extension section connected to the first extension section. The inner folding edge, the first extension section, and the second extension section are all stacked with the long side wall. This forming structure for triangular columns of a carton includes:

[0005] An upper die assembly, including an upper die base capable of moving in a direction perpendicular to the bottom wall and a plurality of column punches connected to the upper die base. The height direction of the column punches is parallel to the moving direction of the upper die base, and the cross-sectional shape of the column punches in their own height direction is a right triangle. At least one side wall of the column punches used to form the right angle is adapted to the shape of the inner folding edge, and the side wall of the column punches opposite to the right angle is adapted to the shape of the first extension section;

[0006] A lower die assembly, including a plurality of lower templates and a plurality of support plates arranged outside the target carton. The plurality of lower templates are respectively abutted against the short side wall and the long side wall and are used to support the short side wall and the long side wall, and the support plates are abutted against the bottom wall and are used to support the bottom wall;

[0007] The forming assembly includes a push head and a turning knife that can move along an arc path respectively. The moving plane of the push head is perpendicular to the column punch, and the column punch is located inside the moving path of the push head. The first extension section is located on the moving path of the push head, and a notch for the push head to pass through is provided on the long side wall. The plane where the moving path of the turning knife is located is perpendicular to the short side wall and is used to press the second extension section that follows the first extension section and abuts against the short side wall onto the short side wall.

[0008] Optionally, the forming assembly further includes a support base and a roller set mounted on the support base;

[0009] The roller set includes a plurality of rollers arranged on both sides of the moving path of the push head. The rollers are evenly arranged along the direction parallel to the moving path of the push head and are used to abut against the side surface of the push head to provide moving guidance for the push head.

[0010] Optionally, the forming assembly further includes a push head cylinder swingably mounted on the support base, a spherical plain bearing connected to the power end of the push head cylinder, and a connecting arm connected to the spherical plain bearing;

[0011] The push head is connected to the connecting arm and can be driven by the push head cylinder.

[0012] Optionally, the forming assembly includes a rotating shaft connected to the turning knife, a gear coaxially connected to the rotating shaft, and a rack that forms a transmission pair with the gear, and further includes a turning knife cylinder connected to the rack and used to drive the rack;

[0013] The rotating shaft is parallel to the short side wall.

[0014] Optionally, at least two turning knives are connected to the rotating shaft at intervals along the axial direction of the rotating shaft.

[0015] Optionally, the projection of the push head on its moving plane is an arc structure, and the arc structure is adapted to the arc path.

[0016] The beneficial effects of the carton triangular column forming structure provided by this application are as follows: Compared with the prior art, in the carton triangular column forming structure provided by this application, the upper die base can drive the column punch to insert into the carton along the direction perpendicular to the bottom wall and fit against the short side wall and the inner folding edge of the carton. Since at least one side wall of the column punch for forming a right angle is adapted to the shape of the inner folding edge and the side wall opposite to the right angle is adapted to the shape of the first extension section, and since the moving plane of the push head is perpendicular to the column punch and the column punch is located inside the moving path of the push head, and the first extension section is located on the moving path of the push head, when the side wall of the column punch adapted to the inner folding edge abuts against the inner folding edge, the push head capable of moving along an arc path can abut the first extension section against the side wall of the column punch opposite to the right angle during the process of rotating around the column punch. The second extension section connected to the first extension section can move along with the first extension section and be bonded to the short side wall of the carton through the pre-coated glue layer thereon. In this way, the short side wall, in cooperation with the inner folding edge and the first extension section, automatically forms a triangular column structure. In addition, the turning knife whose moving path plane is perpendicular to the short side wall can press the second extension section against the short side wall during the process of moving along the arc path. In this way, the carton triangular column forming structure provided in this application can automatically and efficiently form a triangular column with stable structure inside the target carton through the mutual cooperation of the upper die assembly, the lower die assembly and the forming assembly, effectively improving the forming efficiency, which is far superior to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Schematic diagram of the overall structure of the carton triangular column forming structure provided by the embodiment of this application Figure 1 ;

[0019] Figure 2 Schematic diagram of the overall structure of the carton triangular column forming structure provided by the embodiment of this application Figure 2 ;

[0020] Figure 3 is Figure 1 the enlarged view of the structure at A in

[0021] Figure 4 Schematic diagram of the initial state of the target carton in the embodiment of this application;

[0022] Figure 5Schematic diagram of the cooperation state between the triangular column forming structure of the paper box and the target paper box in the embodiment of the present application;

[0023] Figure 6 Schematic diagram of the final state of the target paper box in the embodiment of the present application.

[0024] Among them, the reference numerals in the figure: 101, upper die base; 102, column punch; 103, lower template; 104, support plate; 105, push head; 106, turning knife; 107, support seat; 108, roller group; 109, push head cylinder; 110, spherical plain bearing; 111, connecting arm; 112, rotating shaft; 113, gear; 114, rack; 115, turning knife cylinder; 201, bottom wall; 202, short side wall; 203, long side wall; 204, inner folding edge; 205, first extension section; 206, second extension section; 207, notch. Detailed implementation manners

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0029] Please refer to Figures 1 to 6, a triangular column forming structure for a paper box provided in an embodiment of the present application will be described. This triangular column forming structure for a paper box is used to form a triangular column inside a target paper box. The target paper box includes a bottom wall 201, a short side wall 202 and a long side wall 203 that are respectively vertically connected to the bottom wall 201, and further includes an inner folding edge 204 vertically connected to the short side wall 202, a first extension section 205 connected to the inner folding edge 204, and a second extension section 206 connected to the first extension section 205. The inner folding edge 204, the first extension section 205 and the second extension section 206 are all stacked with the long side wall 203. Specifically, this triangular column forming structure for a paper box includes an upper die assembly, a lower die assembly and a forming assembly. Among them:

[0030] The upper die assembly includes an upper die base 101 that can move in a direction perpendicular to the bottom wall 201 and several column punches 102 connected to the upper die base 101. The height direction of the column punches 102 is parallel to the moving direction of the upper die base 101, and the cross-sectional shape of the column punches 102 in their own height direction is a right triangle. At least one side wall of the column punches 102 used to form the right angle is adapted to the shape of the inner folding edge 204, and the side wall of the column punches 102 opposite to the right angle is adapted to the shape of the first extension section 205. It can be understood that in this embodiment, the target paper box has four triangular column forming positions, so four column punches 102 can be correspondingly arranged for one-time forming. The lower die assembly includes several lower templates 103 and several support plates 104 arranged outside the target paper box. The several lower templates 103 are respectively abutted against the short side wall 202 and the long side wall 203 and are used to support the short side wall 202 and the long side wall 203. The support plate 104 is abutted against the bottom wall 201 and is used to support the bottom wall. Here, the lower templates 103 and the support plates 104 can adopt the existing technologies of paper box forming equipment; the forming assembly includes a push head 105 and a turning knife 106 that can move along an arc path respectively. The moving plane of the push head 105 is perpendicular to the column punch 102, and the column punch 102 is located inside the moving path of the push head 105. The first extension section 205 is located on the moving path of the push head 105, and a notch 207 for the push head 105 to pass through is provided on the long side wall 203. The moving path plane of the turning knife 106 is perpendicular to the short side wall 202 and is used to press the second extension section 206 that follows the first extension section 205 and abuts against the short side wall 202 against the short side wall 202. Generally, in the production of paper boxes, a glue layer for bonding the second extension section 206 to the short side wall 202 can be pre-coated on the side of the second extension section 206 facing away from the long side wall 203 or at the position of the short side wall 202 corresponding to the second extension section 206 by a pre-set glue coating process. In this way, when the turning knife 106 presses the second extension section 206 against the short side wall 202 to complete the formation of the triangular column, the firm bonding of the second extension section 206 to the short side wall 202 is realized, so that the formed triangular column maintains a firm and stable structural state.

[0031] According to the above structure provided in this embodiment, in the triangular column forming structure of the paper box provided in this embodiment, the upper die base 101 can drive the column punch 102 to insert into the paper box along the direction perpendicular to the bottom wall 201 and fit on the short side wall 202 and the inner folding edge 204 of the paper box. Since at least one side wall of the column punch 102 for forming a right angle is adapted to the shape of the inner folding edge 204 and the side wall opposite to the right angle is adapted to the shape of the first extension section 205, and since the moving plane of the push head 105 is perpendicular to the column punch 102 and the column punch 102 is located inside the moving path of the push head 105, and the first extension section 205 is located on the moving path of the push head 105, when the side wall of the column punch 102 adapted to the inner folding edge 204 abuts against the inner folding edge 204, the push head 105 capable of moving along an arc path can abut the first extension section 205 against the side wall of the column punch 102 opposite to the right angle during the process of rotating around the column punch 102. The second extension section 206 connected to the first extension section 205 can move with the first extension section 205 and be bonded to the short side wall 202 of the paper box through the pre-coated adhesive layer thereon. In this way, the short side wall 202, in cooperation with the inner folding edge 204 and the first extension section 205, automatically forms a triangular column structure. In addition, the turning knife 106 whose moving path plane is perpendicular to the short side wall 202 can press the second extension section 206 against the short side wall 202 during the process of moving along the arc path. In this way, the triangular column forming structure of the paper box provided in this embodiment can automatically and efficiently form a triangular column with a stable structure inside the target paper box through the mutual cooperation of the upper die assembly, the lower die assembly and the forming assembly, effectively improving the forming efficiency, which is far superior to the prior art.

[0032] In another embodiment of the present application, please refer to Figures 1 to 6 together. The forming assembly further includes a support base 107 and a roller group 108 mounted on the support base 107; the roller group 108 includes a plurality of rollers arranged on both sides of the moving path of the push head 105. The rollers are uniformly arranged along the direction parallel to the moving path of the push head 105 and are used to abut against the side surface of the push head 105 to provide a moving guide for the push head 105. According to the above structure provided in this embodiment, the guiding effect of the rollers on the push head 105 can ensure that the push head 105 moves precisely along the set path, which is beneficial to further improving the forming efficiency of the triangular column forming structure of the paper box in this embodiment.

[0033] In another embodiment of the present application, please refer to Figures 1 to 6, the forming assembly further includes a push head cylinder 109 swingably mounted on the support base 107, a spherical plain bearing 110 connected to the power end of the push head cylinder 109, and a connecting arm 111 connected to the spherical plain bearing 110; the push head 105 is connected to the connecting arm 111 and can be driven by the push head cylinder 109. According to the above structure provided in this embodiment, the push head 105 can move smoothly according to the driving force of the cylinder, and the spherical plain bearing 110 connected between the push head cylinder 109 and the connecting arm 111 can better adapt the output of the cylinder to the arc-shaped movement path of the push head 105, which is beneficial to further improving the forming efficiency of the carton triangular column forming structure in this embodiment.

[0034] In addition, it should be noted that, as a preferred embodiment of the present application, the way of using the push head cylinder 109 to drive the push head 105 and using the roller group 108 for auxiliary guiding can achieve the stable movement effect of the push head 105 along the arc path. Other ways in the art to drive the push head 105 to move along the arc path, such as using a motor to drive the push head 105 to move, should be regarded as variant embodiments of this embodiment and are within the protection scope of the present application, which will not be elaborated here.

[0035] In another embodiment of the present application, please refer to Figures 1 to 6 , the forming assembly includes a rotating shaft 112 connected to the folding knife 106, a gear 113 coaxially connected to the rotating shaft 112, and a rack 114 forming a transmission pair with the gear 113, and further includes a folding knife cylinder 115 connected to the rack 114 and used to drive the rack 114; the rotating shaft 112 is parallel to the short side wall 202. According to the above structure provided in this embodiment, on the one hand, the meshing transmission between the gear 113 and the rack 114 makes the rotation of the folding knife 106 more precise; in addition, through the transmission of the gear 113 and the rack 114 and the constant power output provided by the folding knife cylinder 115, the folding knife 106 can complete the pressing operation on the second extension section 206 under precise control, thereby ensuring the high efficiency and consistency of the forming of the triangular column inside the carton, which is beneficial to further improving the forming efficiency of the carton triangular column forming structure in this embodiment.

[0036] In another embodiment of the present application, please refer to Figures 1 to 6 , at least two folding knives 106 are spaced along the axial direction of the rotating shaft 112. According to the above structure provided in this embodiment, each folding knife 106 corresponds to a second extension section 206, which is beneficial to saving the raw materials for making the folding knife and reducing costs compared with the integral folding knife. At the same time, it is beneficial to reduce the weight of the folding knife 106 and the load of the folding knife cylinder 115, and further improve the forming efficiency of the carton triangular column forming structure in this embodiment.

[0037] In another embodiment of the present application, please refer to Figures 1 to 6, the projection of the pusher 105 on its moving plane is an arc structure, which is adapted to the arc path, so that when the pusher 105 moves and bends the first extension section 205, it is smooth and has a small space occupation.

[0038] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A forming structure for a triangular column of a paper box, which is used to form a triangular column inside a target paper box. The target paper box includes a bottom wall (201), a short side wall (202) and a long side wall (203) that are respectively vertically connected to the bottom wall (201). It further includes an inner folding edge (204) vertically connected to the short side wall (202), a first extension section (205) connected to the inner folding edge (204), and a second extension section (206) connected to the first extension section (205). The inner folding edge (204), the first extension section (205) and the second extension section (206) are all stacked with the long side wall (203). It is characterized in that, Comprising: An upper die assembly, including an upper die base (101) capable of moving in a direction perpendicular to the bottom wall (201) and a plurality of column punches (102) connected to the upper die base (101). The height direction of the column punches (102) is parallel to the moving direction of the upper die base (101), and the cross-sectional shape of the column punches (102) in their own height direction is a right triangle. At least one side wall for forming a right angle on the column punches (102) is adapted to the shape of the inner folded edge (204), and the side wall opposite to the right angle on the column punches (102) is adapted to the shape of the first extension section (205); A lower die assembly, including a plurality of lower templates (103) and a plurality of support plates (104) arranged outside the target paper box. The plurality of lower templates (103) are respectively abutted against the short side walls (202) and the long side walls (203) and are used to support the short side walls (202) and the long side walls (203), and the support plates (104) are abutted against the bottom wall (201) and are used to support the bottom wall; A forming assembly, including a push head (105) and a turning knife (106) capable of moving along an arc path respectively. The moving plane of the push head (105) is perpendicular to the column punch (102), and the column punch (102) is located inside the moving path of the push head (105). The first extension section (205) is located on the moving path of the push head (105), and a notch (207) for the push head (105) to pass through is provided on the long side wall (203). The plane where the moving path of the turning knife (106) is located is perpendicular to the short side wall (202) and is used to press the second extension section (206) that follows the first extension section (205) and abuts against the short side wall (202) against the short side wall (202).

2. The triangular column forming structure of the paper box according to claim 1, wherein: The forming assembly further includes a support seat (107) and a roller group (108) installed on the support seat (107); The roller group (108) includes a plurality of rollers arranged on both sides of the moving path of the push head (105). The rollers are uniformly arranged along the direction parallel to the moving path of the push head (105) and are used to abut against the side surface of the push head (105) to provide moving guidance for the push head (105).

3. The triangular column forming structure of the paper box according to claim 2, wherein: The forming assembly further includes a push head cylinder (109) swingably installed on the support seat (107), a spherical plain bearing (110) connected to the power end of the push head cylinder (109), and a connecting arm (111) connected to the spherical plain bearing (110); The push head (105) is connected to the connecting arm (111) and can be driven by the push head cylinder (109).

4. The triangular column forming structure of the paper box according to claim 1, wherein: The forming assembly includes a rotating shaft (112) connected to the turning knife (106), a gear (113) coaxially connected to the rotating shaft (112), and a rack (114) forming a transmission pair with the gear (113), and further includes a turning knife cylinder (115) connected to the rack (114) and used to drive the rack (114); The rotating shaft (112) is parallel to the short side wall (202).

5. The carton triangular column forming structure according to claim 4, wherein: At least two turning knives (106) are spaced along the axial direction of the rotating shaft (112).

6. The carton triangular column forming structure according to claim 1, characterized in that: The projection of the push head (105) on its moving plane is an arc structure, and the arc structure is adapted to the arc path.

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