Forming die and forming device for three-dimensional bag

Abstract

The utility model discloses a forming die and a forming device of a three-dimensional bag, at least one of a pair of aligning walls of the forming die is provided with a motion guide part, and when the forming device is used for carrying out inserting motion of bag opening edge folding, the motion guide part can guide the wall face of a bag body. The resistance of the forming mold to intervene in bag body wall surface movement is reduced; and the movement guide part and a dragging structure in the forming device can jointly form a clamping structure, so that the stability of movement of the wall surface of the bag body is higher, and the probability that the wall surface of the bag body slips is lower even if the movement speed is higher. Therefore, when the forming die is applied to the forming device, the three-dimensional bag can be more efficiently manufactured, and the yield is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to three -dimensional bag manufacturing technical field especially, relates to a kind of forming die and forming device of three -dimensional bag. BACKGROUND

[0002] Three-dimensional bag as a portable storage container, has become an indispensable part in our daily life, is a kind of handle or shoulder strap designed, it is convenient for people to carry or shoulder bag, usually made of various materials, such as cloth, leather, plastic, paper, etc., for various materials three-dimensional bag, three-dimensional bag structural stability and aesthetic property are important factors in its design and manufacturing process, it is not only related to the experience of user, also directly influences the practicability and durability of three-dimensional bag. Therefore, more and more three-dimensional bags are provided with inwardly folded edges at the bag opening, which not only enhances the structural stability of the three-dimensional bag, but also improves the overall aesthetic appearance of the three-dimensional bag. And bag opening edge can also provide additional protection to reduce the friction and discomfort of the three-dimensional bag on the hand. Especially when the three-dimensional bag is loaded with heavy objects, the edge can distribute the weight and reduce the pressure on the skin and muscles of the hand, making the user more comfortable.

[0003] In the production of three-dimensional bag with bag opening edge, the connection between the bag opening edges usually needs to be inserted and fixed to each other to improve the stability and aesthetic property of the bag structure. In the prior art, the forming device in the bag making equipment is mainly used to realize the insertion process of the bag opening edges. Specifically, after the sheet material is wrapped on the mold, the external dragging structure is used to drive the two front surfaces of the bag body to move relative to each other in the vertical direction, so that the insertion part and the inserted part of the bag opening edge connection are moved relative to each other and reset to realize the insertion. During the insertion process, if the moving speed is too fast, or the frictional resistance between the sheet material and the mold is too large, the sheet material may slip relative to the dragging structure, resulting in failure of the bag opening edge insertion. This not only affects the bag making efficiency of the bag making equipment, but also affects the qualified rate. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problem that the forming mold in the forming device in the prior art affects the bag making efficiency and qualified rate.

[0005] To achieve the above object, the application provides a forming die for a three-dimensional bag, the three-dimensional bag comprising a bottom surface, two opposite front surfaces arranged in the width direction of the bottom surface, and two opposite side surfaces arranged in the length direction of the bottom surface; wherein each side surface comprises a plug-in part and a plugged part, the two front surfaces are moved in the height direction of the forming die, and the bag opening flaps of the plug-in parts of the side surfaces are plugged into the bag opening flaps of the plugged parts; the forming die provides shape support for the bag body during the forming of the sheet material into the three-dimensional bag, wherein the forming die comprises a bottom wall supporting the bottom surface, a pair of front walls supporting the two front surfaces, and a pair of side walls supporting the two side surfaces; wherein at least one of the pair of front walls is provided with a movement guiding component, the moving end of the movement guiding component is exposed from the front wall and can move relative to the height direction; and during the forming of the sheet material into the three-dimensional bag, the two front surfaces are respectively attached to the corresponding one of the front walls, the moving end of the movement guiding component is attached to the inner wall surface of the corresponding one of the front surfaces, and the corresponding one of the front surfaces moves together relative to the height direction.

[0006] With the above technical solution, when the forming die provided by the application is applied to a forming device to make a three-dimensional bag, since at least one of the pair of front walls of the forming die is provided with a movement guiding component, the moving end of the movement guiding component is exposed from the front wall and can move relative to the height direction, so that when an external dragging structure, for example, a belt frictionally contacts one of the front surfaces (the outer wall surface of the front surface on the side where the movement guiding component is located) and moves, the movement guiding component will simultaneously abut against the other side of the sheet material (the inner wall surface of the front surface) and can move together with the corresponding one of the front surfaces relative to the height direction. The movement guiding component can form a clamping structure with the belt, so that both sides of the front surface are subjected to extrusion force, the front surface can be stably clamped and moved together with the movement guiding component and the belt; during the process, since the movement guiding component can move together with the corresponding one of the front surfaces relative to the height direction, both sides of the front surface are simultaneously guided to move. Compared with the use of the existing forming die structure, the movement guiding component can reduce the resistance applied by the forming die to the movement of the front surface. It can be seen that when the forming die provided by the application is applied to a forming device to realize the bag opening flap plugging action, the forming die is more stable, the accuracy is higher, and especially even if the forming speed is adjusted relatively fast, the probability that the front surface slips relative to the dragging structure and cannot be moved synchronously is relatively low. Therefore, the overall efficiency of the forming device and the qualification rate of the three-dimensional bag can be improved.

[0007] In addition, due to the arrangement of the movement guiding component, the movement guiding component can reduce the demolding resistance when the three-dimensional bag is demolded, can avoid deformation of the bag body caused by local stress concentration, and can improve the demolding efficiency and success rate of the three-dimensional bag.

[0008] According to the forming mold of the three-dimensional bag provided in the present application, the outer wall surface of a corresponding one of the vertical walls is formed with a receiving portion, a movement guiding component is arranged in the receiving portion, and a moving end of the movement guiding component protrudes from the outer wall surface of the corresponding one of the vertical walls.

[0009] By forming the receiving portion on the outer wall surface of a corresponding one of the vertical walls, the movement guiding component can be installed without changing the overall structure of the forming mold, and the movement guiding component is arranged in the receiving portion in an embedded manner, so that the flatness of the outer wall surface of the corresponding one of the vertical walls is better controlled, thereby facilitating the overall flatness of the three-dimensional bag during forming. The moving end of the movement guiding component protrudes from the outer wall surface of the corresponding one of the vertical walls, so that the inner wall surface of the one vertical wall can be in contact with the movement guiding component with a higher probability, thereby better guiding the movement of the one vertical wall.

[0010] According to the forming mold of the three-dimensional bag provided in the present application, the movement guiding component includes a friction belt and at least two supporting rollers; the at least two supporting rollers are rotatably arranged in the receiving portion along the width direction of the forming mold and are spaced apart from each other along the height direction; and the friction belt extends around the at least two supporting rollers, and the friction belt as a moving end is frictionally engaged with the inner wall surface of a corresponding one of the vertical walls and moves along the height direction together.

[0011] By including the friction belt and the at least two supporting rollers in the movement guiding component, when the forming mold is applied to a forming device to realize the bag opening hem insertion action of the three-dimensional bag, the movement guiding component and the dragging structure of the forming device can more stably clamp the sheet material due to the large friction coefficient of the friction belt, and especially when the dragging structure of the forming device is also a belt, the two sides of the sheet material are equivalent to being clamped by the friction belt at the same time, so that the dragging force received by the two sides of the sheet material is more uniform.

[0012] According to the forming mold of the three-dimensional bag provided in the present application, the movement guiding component includes a plurality of guide rollers; the plurality of guide rollers are rotatably arranged in the receiving portion along the width direction of the forming mold and are spaced apart from each other along the height direction; and the plurality of guide rollers as moving ends roll and support the inner wall surface of a corresponding one of the vertical walls and rotate along the width direction as the one vertical wall moves along the height direction.

[0013] By setting the movement guiding component as the plurality of guide rollers, the guide rollers can be installed only by a rotatable manner during installation, and the guide rollers are easier to layout, so that the manufacturing process of the forming mold is simpler. In addition, the resistance of the guide rollers is smaller, so that the resistance received by the inner wall surface of the sheet material is further reduced.

[0014] According to the forming mold of the three-dimensional bag provided in the present application, a corresponding one of the front walls is provided with at least one pair of movement guiding components arranged at intervals in the width direction of the forming mold; and the receiving portion comprises at least one pair of mounting grooves arranged at intervals in the width direction of the forming mold, and each movement guiding component is mounted in a corresponding mounting groove.

[0015] By arranging at least one pair of movement guiding components at intervals in the width direction of the forming mold, the contact area with the front face of the bag body can be increased, so as to disperse the frictional resistance in the moving process. When the front face of the bag body moves along the height direction, the pair of movement guiding components arranged at intervals can simultaneously support the bag body, so as to ensure the balance of the bag body in the moving process and prevent the bag body from deviating or deforming due to local stress.

[0016] According to the forming mold of the three-dimensional bag provided in the present application, the movement guiding component comprises a plurality of balls, the receiving portion comprises a plurality of mounting holes arranged in an array on a corresponding one of the front walls; each ball is respectively and rollingly mounted in a corresponding mounting hole; and the spherical surface of the plurality of balls protruding outside the receiving portion serves as a moving end to rollingly support the inner wall surface of a corresponding one of the front faces and rotate together with the corresponding one of the front faces along the height direction.

[0017] The present application also provides a forming device of a three-dimensional bag, which comprises a rack, a limiting platform mounted on the rack, and a limiting hole formed on the limiting platform; the forming device also comprises the forming mold with the above structure; the limiting hole is matched with the forming mold, the forming mold is connected to the rack in a lifting manner and located above the limiting platform in the height direction and opposite to the limiting hole; the forming mold moves along the height direction relative to the limiting hole, and the two front faces are respectively folded towards a pair of front walls under the edge limiting action of the limiting hole; a pulling component is arranged on the rack below the limiting platform and corresponding to a side of a corresponding one of the front walls in the thickness direction of the forming mold; the pulling component is arranged opposite to the movement guiding component in the thickness direction of the forming mold; and in the process of forming the sheet material into the three-dimensional bag, the two front faces of the three-dimensional bag are respectively attached to a corresponding one of the front walls of the forming mold, the moving end of the movement guiding component of the forming mold is attached to the inner wall surface of the corresponding one of the front faces and moves together with the corresponding one of the front faces along the height direction, and the pulling component and the moving end of the movement guiding component jointly clamp the corresponding one of the front faces.

[0018] With the technical scheme, the forming device in the application adopts the forming mold with the above structure, at least one of the opposite walls of the forming mold is provided with the movement guiding component, when the three-dimensional bag is made, the dragging component on one side of the mold is in frictional contact with one of the opposite walls (the outer wall surface of the opposite wall on which the movement guiding component is located) and moves, because the movement guiding component will abut against the other side of the sheet material at the same time, and the movement guiding component can move in the height direction together with the corresponding opposite wall, the movement guiding component can form a clamping structure with the dragging component, so that the two sides of the opposite wall are subjected to extrusion force, so that the opposite wall can be stably clamped and moves together with the movement guiding component and the dragging component; in the process, because the movement guiding component can move in the height direction together with the corresponding opposite wall, when the bag opening edge insertion action is implemented, the movement guiding component is more stable, the accuracy is higher, and the higher efficiency of bag making can be met.

[0019] According to the forming device of the three-dimensional bag provided in the application, the dragging component comprises a belt assembly and a first driving assembly; wherein the belt of the belt assembly extends in the height direction and is arranged on the rack outside the corresponding opposite wall, and the pulley of the belt assembly is in transmission connection with the first driving assembly.

[0020] According to the forming device of the three-dimensional bag provided in the application, the dragging component further comprises a moving seat, the belt assembly and the first driving assembly are arranged on the moving seat, and the forming device further comprises a second driving assembly arranged on the rack; wherein the second driving assembly is in transmission connection with the moving seat and drives the moving seat to approach or move away from the corresponding opposite wall.

[0021] According to the forming device of the three-dimensional bag provided in the application, the forming device further comprises at least one pair of side insertion components, the at least one pair of side insertion components are movably connected to the rack in the thickness direction of the forming mold and are located on both sides of the forming mold; wherein in the process that the sheet material is formed into the three-dimensional bag, the two opposite walls are respectively attached to the corresponding opposite wall, one of the at least one pair of side insertion components pushes the insertion part to bend by a first preset angle in the thickness direction, and the other side insertion component pushes the inserted part to bend by a second preset angle in the thickness direction. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The structure schematic view of the three-dimensional bag provided in the application is shown in the figure;

[0023] Figure 2 The structure schematic view of the three-dimensional bag provided in the application is shown in the figure;

[0024] Figure 3 The structure schematic view of the three-dimensional bag provided in the application is shown in the figure;

[0025] Figure 4 A structure schematic view of a three-dimensional bag forming die provided by the embodiment of the utility model;

[0026] Figure 5 A structure schematic view of a movement guiding component in a three-dimensional bag forming die provided by the embodiment of the utility model;

[0027] Figure 6 A structure schematic view of another three-dimensional bag forming die provided by the embodiment of the utility model;

[0028] Figure 7 A structure schematic view of a three-dimensional bag forming device provided by the embodiment of the utility model;

[0029] Figure 8 A partial structure schematic view of a three-dimensional bag forming device provided by the embodiment of the utility model.

[0030] Explanation of reference signs:

[0031] 100, three-dimensional bag; 110, front face; 120, side face; 121, insertion part; 122, inserted part; 130, bottom face; 140, bag opening hem;

[0032] 200, forming die; 210, front wall; 211, containing part; 220, side wall; 230, bottom wall; 240, movement guiding component; 241, friction belt; 242, supporting roller;

[0033] 300, rack; 310, limiting platform; 320, dragging component; 321, belt assembly; 322, first driving assembly; 323, moving seat; 324, second driving assembly; 330, side insertion component. DETAILED DESCRIPTION

[0034] The forming step of the three-dimensional bag is very important in the whole production process of the three-dimensional bag, and for the three-dimensional bag with the bag opening hem, in the prior art, when the bag body is formed by using the forming device, the bag body is often dragged by using a dragging structure to move one side of the bag body relative to the other side to realize the insertion of the bag opening hem after the insertion and fixation to enhance the stability of the bag body structure when the bag body is wrapped to the outer periphery of the forming die. However, in the prior art, when the forming device performs the insertion action, the pushing force applied to the bag body by the dragging structure may be insufficient due to the resistance between the die wall and the bag body or other factors, which causes the insertion action to fail, and the probability of waste products is relatively high. Moreover, due to the limitation of this structure, the bag making speed of the whole machine cannot be adjusted too fast, which greatly affects the bag making efficiency of the whole machine.

[0035] To address the aforementioned problems, this application provides a forming mold applicable to the forming device of a three-dimensional bag making equipment. When this forming mold is used to produce three-dimensional bags, at least one of the two front walls of the forming mold is equipped with a motion guiding component. This allows the bag's wall surface to be guided during the relative movement of one or both sides of the bag body for the insertion action of folding the bag opening, reducing the resistance of the forming mold to the movement of the bag wall surface. Furthermore, the motion guiding component can work with the dragging structure in the forming device to form a clamping structure, resulting in higher stability of the bag wall surface movement. Even at higher movement speeds, the probability of slippage on the bag wall surface is low. Therefore, this forming mold applied to the forming device can produce three-dimensional bags more efficiently and with a higher yield.

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0037] First, to facilitate understanding of the solution, the structure of the three-dimensional bag 100 to be produced in this application will be explained, such as... Figures 1 to 3 As shown, this three-dimensional bag 100 includes a bottom surface 130, two front surfaces 110 disposed opposite each other in the width direction of the bottom surface 130, and two side surfaces 120 disposed opposite each other in the length direction of the bottom surface 130; each side surface 120 includes an insertion portion 121 and an insertion portion 122. The two front surfaces 110 move relative to each other in the height direction of the molding die 200, and the bag opening fold 140 of the insertion portion 121 of each side surface 120 is inserted into the bag opening fold 140 of the insertion portion 122.

[0038] Further explanation of the forming principle of 3D bags: such as Figures 1 to 3 , Figure 7 and Figure 8As shown, the three-dimensional bag used in this application is a sheet material structure before molding. During molding, the sheet material is conveyed to the bottom of the molding mold 200, and then the molding mold 200 moves down. At this time, the combined action of the molding mold 200 and the receiving platform through the holes causes the two front faces 110 of the bag body to fold and adhere to the two front walls 210 of the mold. Then, the side insertion mechanism of the molding device is activated, causing the two side faces of the bag body to bend towards each other, and the connecting part will be in an overlapping posture. However, in this posture, the two side faces of the bag body do not adhere to the two side walls 220 of the molding mold 200. There is a gap between them; then, the dragging structure on the forming device drags the two front faces 110 to move relative to each other in the height direction of the forming mold 200, and the bag opening fold 140 of the insertion part 121 of each side 120 is inserted into the bag opening fold 140 of the insertion part 122. The dragging structure on the forming device can drag one or both front faces 110 of the bag body to achieve relative movement of the two front faces 110 in the height direction of the forming mold 200. Then the sealing mechanism of the forming device is activated to seal the bag body, thereby completing the forming process of the three-dimensional bag 100.

[0039] It should be understood that this application does not impose unique requirements on the structure and arrangement of the side insertion mechanism and sealing mechanism in the molding device, and those skilled in the art can refer to the existing publicly disclosed manufacturing equipment.

[0040] like Figure 4 As shown below, the structure and configuration of the molding die 200 provided in this application will be described.

[0041] In the forming mold 200 of the three-dimensional bag provided in this application, the forming mold 200 provides shape support for the bag body during the process of forming the sheet material into a three-dimensional bag 100. The forming mold 200 includes a bottom wall 230 supporting the bottom surface 130, a pair of front walls 210 supporting the two front surfaces 110, and a pair of side walls 220 supporting the two side surfaces 120.

[0042] It should be noted that the front wall 210 of the molding mold 200 can be a continuous wall surface composed of a single plate, or it can be composed of two or three plates spliced ​​together, that is, the front wall 210 can be composed of two or three planes; similarly, the side wall 220 can also be a continuous wall surface composed of a single plate, or it can be composed of two or three plates spliced ​​together, that is, the side wall 220 can be composed of two or three planes; the bottom wall 230 can be the area enclosed by the bottom edges of the front wall 210 and the side wall 220. A support plate can be set in the enclosed area, or no support plate can be set. During molding, the bottom edges of the front wall 210 and the side wall 220 support the four sides of the bottom surface 130.

[0043] Further, at least one of the pair of front walls 210 is provided with a movement guiding component 240, which refers to a movable structure provided on the front wall 210, and can be a friction belt 241 assembly or a ball array structure, etc. The moving end of the movement guiding component 240 refers to the part in direct contact with the sheet material, such as the outer surface of the friction belt 241 or the spherical surface of the ball, which transmits the driving force through physical contact.

[0044] It needs to be understood that in the pair of front walls 210, one front wall 210 can be provided with a movement guiding component 240, or both front walls 210 can be provided with a movement guiding component 240.

[0045] Specifically, when the pulling structure on the forming device pulls one of the front faces 110 of the bag body to move to achieve the relative movement of the two front faces 110 in the height direction of the forming mold 200, for example, the front face 110 on one side of the insertion part 121 is first moved downward and then moved upward, one front wall 210 can be provided with a movement guiding component 240.

[0046] When the pulling structure on the forming device pulls both of the front faces 110 of the bag body to move to achieve the relative movement of the two front faces 110 in the height direction of the forming mold 200, for example, the pulling structure on one side of the forming mold 200 pulls the front face 110 on one side of the insertion part 121 to move downward, while the pulling structure on the other side of the forming mold 200 pulls the front face 110 on one side of the inserted part 122 to move upward, and then resets to achieve the insertion action of the bag opening flange 140, in this case, both front walls 210 can be provided with a movement guiding component 240.

[0047] It needs to be noted that whether to pull one of the front faces 110 of the bag body to move to achieve the relative movement of the two front faces 110, or to pull both of the front faces 110 of the bag body to move to achieve the relative movement of the two front faces 110, is not uniquely required by the present application, but can be set according to the specific structure of the forming device and the actual production needs of the three-dimensional bag 100.

[0048] Further, in the present application, the moving end of the movement guiding component 240 is arranged to protrude from the front wall 210 and be movable relative to the height direction. For example, the moving end of the movement guiding component 240 can be flush with the wall surface of the front wall 210, or the moving end of the movement guiding component 240 can protrude slightly from the wall surface of the front wall 210 by 1 mm or 2 mm. In this way, during the forming of the sheet material into the three-dimensional bag 100, the two front faces 110 are respectively attached to the corresponding one of the front walls 210, and when one front face 110 or both front faces 110 are pulled to move, the moving end of the movement guiding component 240 will be attached to the inner wall surface of the corresponding one of the front faces 110, and move together with the corresponding one of the front faces 110 relative to the height direction, thereby guiding the movement of the corresponding one of the front faces 110.

[0049] It should be understood that the moving end of the movement guiding component 240 can be attached to the inner wall surface of the corresponding one of the front surfaces 110, or can be attracted to the inner wall surface of the corresponding one of the front surfaces 110. For example, the moving end of the movement guiding component 240 can be provided with an air suction nozzle, so as to be attracted to the inner wall surface of the corresponding one of the front surfaces 110. The corresponding one of the front surfaces 110 of the moving end of the movement guiding component 240 can move together at the same speed. If there is a slight difference in the moving speed of the corresponding one of the front surfaces 110 of the moving end of the movement guiding component 240 due to production process, equipment precision, or the like in actual application, it does not depart from the protection scope of the present application.

[0050] It should be understood that the moving end of the movement guiding component 240 can be moved together with the corresponding one of the front surfaces 110 by the friction force applied when the corresponding one of the front surfaces 110 is moved, or can be integrated with a driving motor, and the driving motor drives the moving end of the movement guiding component 240 to move together with the corresponding one of the front surfaces 110 in the height direction. For example, when the movement guiding component 240 is provided as a friction belt 241 assembly, the driving motor can be arranged in the forming mold 200 and in transmission connection with the support roller 242 in the friction belt 241 assembly, so as to drive the support roller 242 to rotate and drive the friction belt 241 and the corresponding one of the front surfaces 110 to move together in the height direction.

[0051] When the forming mold 200 is applied to the forming device to manufacture the three-dimensional bag 100, at least one of the pair of opposite walls 210 of the forming mold 200 is provided with the movement guiding component 240, the moving end of the movement guiding component 240 is exposed from the opposite wall 210, and the movement guiding component 240 can move relative to the height direction. When the external dragging structure, for example, the belt on one side of the mold, is in frictional contact with one of the opposite walls 110 (the outer wall surface of the opposite wall 110 on which the movement guiding component 240 is located) and moves, the movement guiding component 240 will abut against the other side of the sheet material (the inner wall surface of the opposite wall 110) at the same time, and the movement guiding component 240 can move together with the corresponding opposite wall 110 relative to the height direction. The movement guiding component 240 can form a clamping structure with the belt, so that the two sides of the opposite wall 110 are subjected to pressing force, and the opposite wall 110 can be stably clamped and moves together with the movement guiding component 240 and the belt. During the process, since the movement guiding component 240 can move together with the corresponding opposite wall 110 relative to the height direction, the two sides of the opposite wall 110 are guided to move at the same time. Compared with the existing forming mold 200 structure, the movement guiding component 240 can reduce the resistance applied by the forming mold 200 to the movement of the opposite wall 110. It can be seen that the forming mold 200 provided in the application can realize the bag opening hem 140 insertion action more stably and with higher accuracy when applied to the forming device, especially even if the forming speed is adjusted relatively fast, the probability of the opposite wall 110 slipping relative to the dragging structure and failing to be moved synchronously is relatively low. Therefore, the overall efficiency of the forming device and the qualified rate of the three-dimensional bag 100 can be improved.

[0052] Further, since the movement guiding component 240 is provided, the frictional force of the contact surface can be reduced during the demolding of the three-dimensional bag 100, which can not only avoid the deformation of the bag body due to local stress concentration, but also improve the demolding efficiency and success rate of the three-dimensional bag 100.

[0053] Regarding the arrangement mode of the movement guiding component 240, in the application, the movement guiding component 240 can be directly arranged outside the corresponding opposite wall 210, or the movement guiding component 240 can be arranged in the accommodation portion 211 by arranging the accommodation portion 211 on the outer wall surface of the corresponding opposite wall 210.

[0054] In an embodiment of the application, as shown in Figure 4As shown, the outer wall surface of a corresponding one of the upright walls 210 is formed with a receiving portion 211, which can be a recessed structure on the outer wall surface of the upright wall 210 for accommodating the mounting space of the movement guiding component 240, and can be a groove or a pit, etc., with a depth and shape designed according to the size of the movement guiding component 240. In this structure, the movement guiding component 240 is arranged in the receiving portion 211, and the moving end of the movement guiding component 240 protrudes from the outer wall surface of the corresponding one of the upright walls 210.

[0055] This embodiment forms the receiving portion 211 on the outer wall surface of a corresponding one of the upright walls 210, so that the installation of the movement guiding component 240 can be realized without changing the overall structure of the forming mold 200, and the movement guiding component 240 is arranged in the corresponding one of the upright walls 210 in an embedded manner by the receiving portion 211, so that the flatness of the outer wall surface of the corresponding one of the upright walls 210 is better controlled, thereby facilitating the overall flatness of the three-dimensional bag 100 during forming. By protruding the moving end of the movement guiding component 240 from the outer wall surface of the corresponding one of the upright walls 210, the inner wall surface of one of the front faces 110 can have a higher probability of contacting the movement guiding component 240, thereby better guiding the movement of one of the front faces 110.

[0056] The structure of the movement guiding component 240 will be further described in detail below.

[0057] In one embodiment, as shown in Figure 4 and Figure 5 The movement guiding component 240 includes a friction belt 241 and at least two supporting rollers 242. The friction belt 241 is a flexible belt structure with surface friction, which can be made of rubber or polyurethane material, and the friction force when contacting the bag body is increased by surface texture. The supporting roller 242 is a cylindrical component that can rotate around an axis, which can be a metal roller supported by a bearing or a roller body coated with rubber, and the rotating function can reduce the resistance when the friction belt 241 moves. The number of supporting rollers 242 is not limited, and for example, two supporting rollers 242 are spaced apart along the height direction of the forming mold 200.

[0058] In specific installation, at least two support rollers 242 are rotatable around the width direction of the forming mold 200 and spaced apart from each other along the height direction within the receiving portion 211; and the friction belt 241 extends around the at least two support rollers 242. When the front face 110 of the stand-up pouch 100 is dragged and moved, the friction belt 241, as a moving end facing the outer wall surface of the stand-up pouch 100, rubs against the inner wall surface of the corresponding front face 110 and moves together with the front face 110 along the height direction. In this embodiment, by including the friction belt 241 and at least two support rollers 242 in the motion guide component 240, when the forming mold 200 is applied in the forming device to realize the insertion action of the bag opening folding edge 140 of the stand-up pouch 100, the friction belt 241 itself has a large coefficient of friction, which makes the motion guide component 240 and the drag structure of the forming device clamp the sheet material more stably. In particular, when the drag structure of the forming device is also a belt, both sides of the sheet material are equivalent to being clamped by the friction belt 241 at the same time, which makes the drag force on both sides of the sheet material more uniform.

[0059] In another implementation, such as Figure 6 As shown, the motion guiding component 240 includes a plurality of guide rollers 243, which are rotatable about the width of the forming mold 200 and spaced apart from each other in the height direction within the receiving portion 211. The guide rollers 243 are cylindrical rolling components, which can be made of metal or engineering plastic. They can rotate about the width direction through bearings or bushing structures, thereby converting sliding friction into rolling friction to reduce the resistance of the forming mold 200 to the side wall 220 of the bag body.

[0060] In use, the roller surfaces of multiple guide rollers 243 facing the stackable bag 100 serve as the inner wall surface of one front face 110 corresponding to the moving end rolling support. When one front face 110 of the stackable bag 100 is dragged and moved, the multiple guide rollers 243 move along the height direction and rotate around the width direction along with the front face 110. In this embodiment, by setting the motion guiding component 240 as multiple guide rollers 243, the guide rollers 243 can be installed simply by means of rotation, and the guide rollers 243 are easier to arrange, which simplifies the manufacturing process of the forming mold 200. In addition, the resistance of the guide rollers 243 themselves is relatively small, which can further reduce the resistance on the inner wall 220 surface of the sheet material.

[0061] It should be noted that in this embodiment, the number of guide rollers 243 is not limited. For example, it can be set to 3, 5, 10, etc., and the specific number should be determined according to the size of the forming mold 200.

[0062] For the above two embodiments of the movement guide part 240, it can be that a corresponding one of the front walls 210 is provided with at least one pair of movement guide parts 240 arranged at intervals in the width direction of the forming mold 200; and the receiving part 211 includes at least one pair of mounting grooves arranged at intervals in the width direction of the forming mold 200, and each movement guide part 240 is mounted in a corresponding mounting groove. By arranging at least one pair of movement guide parts 240 at intervals in the width direction of the forming mold 200, the present application can increase the contact area with the bag front surface 110, thereby dispersing the frictional resistance during movement. And when the bag front surface 110 moves along the height direction, the pair of movement guide parts 240 arranged at intervals can simultaneously support the bag, ensuring the balance of the bag during movement, preventing deviation or deformation due to local stress.

[0063] It should be noted that the number of movement guide parts 240 is not limited, and can be one pair (as shown in Figure 4 The specific design can be designed according to actual needs.

[0064] Further, in the present application, the movement guide part 240 is not limited to the above structure, but can also be that the movement guide part 240 includes a plurality of balls (not shown), the receiving part 211 includes a plurality of mounting holes arranged in an array on a corresponding one of the front walls 210; each ball is respectively and rollingly mounted in a corresponding mounting hole; and the spherical surface of the plurality of balls protruding outside the receiving part 211 serves as a moving end to rollingly support the inner wall surface of a corresponding one of the front surfaces 110, and rotates together as the corresponding one of the front surfaces 110 moves along the height direction.

[0065] In the present embodiment, the ball refers to a spherical rolling body, which can be made of stainless steel or ceramic material, and is freely rolled by being embedded in the mounting hole. In use, the spherical surface contacts the inner wall surface of the front surface 110 to reduce the frictional resistance. The mounting holes can be distributed at equal intervals to ensure the uniformity of the ball support force, and the number of balls and mounting holes is not limited, for example, there can be 10, 20, etc.

[0066] Based on the above forming mold 200 of the three-dimensional bag, the present application further provides a forming device for a three-dimensional bag, such as Figure 7 and Figure 8As shown, the forming device comprises a rack 300, a limiting platform 310 mounted on the rack 300, and a limiting hole formed on the limiting platform 310; the forming device also comprises the forming die 200 with the above structure; wherein the limiting hole is matched with the forming die 200, the forming die 200 is connected to the rack 300 in a lifting manner and is located above the limiting platform 310 in the height direction and opposite to the limiting hole; wherein the forming die 200 moves along the height direction relative to the limiting hole, and the two front surfaces 110 are respectively folded towards a pair of front walls 210 under the edge limiting action of the limiting hole; a pulling component 320 is arranged on the rack 300, below the limiting platform 310 and corresponding to one side of the corresponding front wall 210 in the thickness direction of the forming die 200; and during the process of forming the sheet material into the three-dimensional bag 100, the two front surfaces 110 of the three-dimensional bag 100 are respectively attached to the corresponding front wall 210 of the forming die 200, the moving end of the movement guide component 240 of the forming die 200 is attached to the inner wall surface of the corresponding front surface 110 and moves together with the corresponding front surface 110 in the height direction, and the pulling component 320 and the moving end of the movement guide component 240 jointly clamp the corresponding front surface 110.

[0067] In the present application, the limiting platform 310 refers to a supporting structure for preventing the sheet material, which can be a metal plate or a composite material plate with a positioning hole, and limiting the sheet material through the edge of the positioning hole.

[0068] The pulling component 320 refers to a mechanism for applying traction, which can specifically adopt a belt assembly 321, the belt extends in the height direction and forms a clamping area with the movement guide component 240, and drives the bag body to move through friction.

[0069] The side inserting component 330 refers to a structure for assisting the folding of the bag body side surface 120, which can specifically adopt a pneumatic push rod to push a side inserting plate to achieve, and pushes the two side surfaces of the bag body side surface 120 to bend in the thickness direction of the forming die 200.

[0070] Specifically, the forming die 200 is connected to the rack 300 through a lifting mechanism and is located above the limiting platform 310 in the initial position, when the sheet material is placed on the limiting platform 310, the forming die 200 moves downward and passes through the limiting hole, during the descending process of the forming die 200, the edge of the limiting hole forces the two front surfaces 110 of the sheet material to fold towards a pair of front walls 210 respectively, then the side inserting component 330 pushes the two side surfaces of the bag body side surface 120 to bend in the thickness direction from both sides of the forming die 200, and the precise positioning of the inserting structure is completed.

[0071] The structure of the lifting mechanism is not limited, which can be a combination of a motor and a lifting belt to realize the lifting action of the forming die 200.

[0072] The forming device in the present application adopts the forming mold 200 with the above structure. At least one of the pair of opposite walls 210 is provided with the movement guiding component 240. When the three-dimensional bag 100 is made, the trailing component 320 on one side of the mold is in frictional contact with one side 110 (the outer wall surface of the side 110 on which the movement guiding component 240 is located) and moves. At this time, the movement guiding component 240 will abut against the other side of the sheet material, and the movement guiding component 240 can move in the height direction together with the corresponding side 110. The movement guiding component 240 can form a clamping structure with the trailing component 320, so that the two sides of the side 110 are subjected to extrusion force. In this way, the side 110 can be stably clamped and moved together with the movement guiding component 240 and the trailing component 320. During the process, since the movement guiding component 240 can move in the height direction together with the corresponding side 110, the insertion action of the bag opening hem 140 is more stable, the accuracy is higher, and the demand for higher efficiency of bag making can be met.

[0073] Further, the structure of the trailing component 320 is not limited, for example, it can be a trailing plate, a trailing belt, etc.

[0074] In an embodiment, the trailing component 320 includes a belt assembly 321 and a first driving assembly 322. The belt of the belt assembly 321 extends in the height direction and is arranged on the rack 300 outside the corresponding side wall 210. The pulley of the belt assembly 321 is in transmission connection with the first driving assembly 322.

[0075] The belt assembly 321 refers to a transmission structure composed of a belt and a pulley. Specifically, it can be achieved by using a ring belt in cooperation with a plurality of pulleys. The belt extends in the height direction and is arranged outside the side wall 210, for driving the bag side 110 to move.

[0076] The first driving assembly 322 refers to a power source for driving the belt to operate. Specifically, it can be a servo motor or a stepping motor, which drives the pulley to rotate and drives the belt to move in the height direction.

[0077] During the forming process, when the bag side 110 is attached to the side wall 210, the belt assembly 321 moves in the height direction by the driving of the first driving assembly 322 and clamps the bag side 110 together with the movement guiding component 240 of the forming mold 200. The moving end of the belt and the movement guiding component 240 form a clamping area, which drives the bag side 110 to move synchronously by frictional force, so as to complete the hem insertion action of the insertion part 121 and the inserted part 122 of the side surface 120.

[0078] Further, the pulling component 320 further comprises a moving seat 323, the belt assembly 321 and the first driving assembly 322 are arranged on the moving seat 323, and the forming device further comprises a second driving assembly 324 arranged on the rack 300; wherein the second driving assembly 324 is in transmission connection with the moving seat 323 and drives the moving seat 323 to move close to or away from the corresponding one of the right walls 210.

[0079] The moving seat 323 refers to a support structure for mounting the belt assembly 321 and the first driving assembly 322, which can be a metal frame or a sliding table structure, and the second driving assembly 324 refers to a power mechanism for driving the moving seat 323 to move along the thickness direction of the forming mold 200, which can be a pneumatic cylinder, an electric push rod or a lead screw motor.

[0080] During the forming process, the second driving assembly 324 drives the moving seat 323 to move towards the direction close to the right wall 210, so that the belt of the belt assembly 321 is clamped together with the moving end of the movement guiding component 240 of the forming mold 200 to clamp the corresponding front face 110. When the thickness of the bag body changes, the second driving assembly 324 can also adjust the position of the moving seat 323, so that the clamping distance between the pulling component 320 and the movement guiding component 240 matches the thickness of the bag body. For example, if the bag body material is thick, the moving seat 323 is driven to a position away from the right wall 210 to increase the clamping distance; if the material is thin, the moving seat 323 is driven to a position close to the right wall 210 to reduce the clamping distance.

[0081] In some embodiments, the second driving assembly 324 can include a guide rail and a sliding block structure, the moving seat 323 is in sliding connection with the guide rail through the sliding block, and the guide rail extends along the thickness direction of the forming mold 200. For example, the second driving assembly 324 adopts a servo motor to drive a ball screw, the screw nut is fixedly connected with the moving seat 323, and the movement of the moving seat 323 along the guide rail is realized by controlling the rotation direction of the servo motor.

[0082] Further, in the forming device of the three-dimensional bag provided in the present application, the forming device further comprises at least one pair of side inserting components 330, the at least one pair of side inserting components 330 are movably connected to the rack 300 in the thickness direction of the forming mold 200 and are located on both sides of the forming mold 200; wherein, during the process of forming the sheet material into the three-dimensional bag 100, after the two front faces 110 are respectively attached to the corresponding one of the right walls 210, one of the at least one pair of side inserting components 330 pushes the inserted part 121 to bend a first preset angle along the thickness direction, and the other of the at least one pair of side inserting components 330 pushes the inserted part 122 to bend a second preset angle along the thickness direction.

[0083] Specifically, each side insertion part 330 can be independently provided, and can adopt a hydraulic cylinder, an air cylinder or a motor-driven push plate to push the side surface to bend to realize the bending of the insertion part 121 and the inserted part 122. The first preset angle and the second preset angle are not limited, for example, the first preset angle can be 70°, and the second preset angle is set to 60°.

[0084] It should be noted that, in addition to the specific embodiments described above, other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure. Although the description of the present application is introduced in combination with the preferred embodiments, it does not mean that the features of the present application are limited to the implementation. On the contrary, the purpose of introducing the present application in combination with the implementation is to cover other options or modifications that can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details are included in the above description, and the present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0085] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0086] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0087] The terms "first", "second", and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0088] In the description of the present embodiment, it should be noted that, unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

[0089] While the present application has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood that the foregoing is intended to be illustrative only and not limiting of the scope of the application, which is set forth in the claims. Various changes in form and details of the application can be made by those skilled in the art without departing from the spirit and scope of the application, including making several simple substitutions or changes in form and details, without departing from the spirit and scope of the application.

Claims

1. A forming mold for a three-dimensional bag, the three-dimensional bag comprising a bottom surface, two front surfaces oppositely arranged in a width direction of the bottom surface, and two side surfaces oppositely arranged in a length direction of the bottom surface; wherein, Each of the side surfaces comprises a bag mouth flange insertion part and a bag mouth flange insertion receiving part, and the two front surfaces are relatively moved in the height direction of the forming mold to link the bag mouth flange insertion part of each of the side surfaces to the bag mouth flange insertion receiving part. The forming mold provides shape support for the bag body during the process of forming the sheet material into the three-dimensional bag, wherein the forming mold comprises a bottom wall supporting the bottom surface, a pair of front walls supporting the two front surfaces, and a pair of side walls supporting the two side surfaces. At least one of the pair of front walls is provided with a movement guiding component, a moving end of the movement guiding component is exposed from the front wall and is movable relative to the height direction, and during the process of forming the sheet material into the three-dimensional bag, the two front surfaces are respectively attached to a corresponding one of the front walls, and the moving end of the movement guiding component is attached to the inner wall surface of the corresponding one of the front surfaces and moves together with the corresponding one of the front surfaces relative to the height direction.

2. The three-dimensional bag forming mold of claim 1, wherein, The outer wall surface of the corresponding one of the front walls is formed with a receiving part, and the movement guiding component is arranged in the receiving part, and the moving end of the movement guiding component protrudes from the outer wall surface of the corresponding one of the front walls.

3. The three-dimensional bag forming mold of claim 2, wherein, The movement guiding component comprises a friction belt and at least two supporting rollers. The at least two supporting rollers are rotatably arranged in the receiving part along the width direction of the forming mold and are spaced apart from each other along the height direction. The friction belt extends around the at least two supporting rollers, and the moving end of the friction belt, which is directed towards the outer wall surface of the three-dimensional bag, is frictionally engaged with the inner wall surface of the corresponding one of the front surfaces and moves together with the corresponding one of the front surfaces along the height direction.

4. The three-dimensional bag forming mold of claim 2, wherein The movement guiding component comprises a plurality of guide rollers. The plurality of guide rollers are rotatably arranged in the receiving part along the width direction of the forming mold and are spaced apart from each other along the height direction. The plurality of guide rollers, which are directed towards the outer wall surface of the three-dimensional bag, rollingly support the inner wall surface of the corresponding one of the front surfaces as the moving end and rotate around the width direction as the corresponding one of the front surfaces moves along the height direction. The corresponding one of the front walls is provided with at least one pair of movement guiding components arranged in the width direction of the forming mold and spaced apart from each other.

5. A forming mold for three-dimensional bags as claimed in any one of claims 2 to 4, characterized in that The receiving part comprises at least one pair of mounting grooves arranged in the width direction of the forming mold and spaced apart from each other, and each of the movement guiding components is mounted in the corresponding mounting groove. The movement guiding component comprises a plurality of rolling balls, and the receiving part comprises a plurality of mounting holes arranged in an array on the corresponding one of the front walls.

6. The three-dimensional bag forming mold of claim 2, wherein, Each of the rolling balls is rollingly mounted in the corresponding mounting hole, and the plurality of rolling balls, which are directed towards the outer wall surface of the three-dimensional bag, rollingly support the inner wall surface of the corresponding one of the front surfaces as the moving end and rotate together as the corresponding one of the front surfaces moves along the height direction. The forming device further comprises the forming mold according to any one of claims 1-6.

7. A three-dimensional bag forming device, comprising a frame, a limiting platform mounted on the frame, and a limiting hole formed on the limiting platform; characterized in that, ​ The limiting hole is matched with the forming die which is connected to the rack in a lifting manner above the limiting platform in the height direction and opposite to the limiting hole; wherein the forming die moves along the height direction relative to the limiting hole, and the two front surfaces are respectively folded towards the pair of vertical walls under the edge limiting action of the limiting hole; A dragging component is arranged on the rack below the limiting platform and corresponding to one of the vertical walls in the thickness direction of the forming die, and the dragging component is arranged opposite to the movement guiding component; and In the process of forming the sheet material into the three-dimensional bag, the two front surfaces of the three-dimensional bag are respectively attached to the corresponding one of the vertical walls of the forming die, the moving end of the movement guiding component of the forming die is attached to the inner wall surface of the corresponding front surface, and the corresponding front surface moves together relative to the height direction, and the dragging component and the moving end of the movement guiding component jointly clamp the corresponding front surface.

8. The apparatus of claim 7, wherein the apparatus is configured to form the three-dimensional bag by: The dragging component comprises a belt assembly and a first driving assembly; wherein The belt of the belt assembly extends along the height direction and is arranged on the rack outside the corresponding one of the vertical walls, and the pulley of the belt assembly is in transmission connection with the first driving assembly.

9. The apparatus of claim 8, wherein the apparatus is configured to form the three-dimensional bag by: The dragging component further comprises a moving seat, and the belt assembly and the first driving assembly are arranged on the moving seat, and the forming device further comprises a second driving assembly arranged on the rack; wherein The second driving assembly is in transmission connection with the moving seat and drives the moving seat to approach or move away from the corresponding one of the vertical walls.

10. The apparatus of claim 7, wherein the apparatus is configured to form the three-dimensional bag by: The forming device further comprises at least one pair of side inserting components which are movably connected to the rack in the thickness direction of the forming die and located on both sides of the forming die; wherein In the process of forming the sheet material into the three-dimensional bag, when the two front surfaces are respectively attached to the corresponding one of the vertical walls, one of the at least one pair of side inserting components pushes the inserted part to bend by a first preset angle along the thickness direction, and the other side inserting component pushes the inserted part to bend by a second preset angle along the thickness direction.

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