Forming mold and forming mold assembly for hand carried bag

Abstract

A forming mold (100) and forming mold assembly for a hand carried bag. The forming mold (100) comprises a mold body (110), and two first side walls (120), two second side walls (130), a bottom wall (140), and two bag body limiting assemblies (150) provided on the mold body (110); the two first side walls (120) are respectively adapted to two front surfaces (101) of the hand carried bag (10), the two second side walls (130) are respectively adapted to two side surfaces (102) of the hand carried bag (10), the bottom wall (140) is adapted to a bottom surface (103) of the hand carried bag (10), and the two bag body limiting assemblies (150) are respectively adapted to the two first side walls (120). Insertion of bag mouth folded edges (104) of the hand carried bag can be achieved; when the present invention is applied to a forming device for the hand carried bag (10), the bag body and the bag mouth folded edges (104) can be synchronously formed, thereby improving the production efficiency and the yield of the hand carried bag (10).

Description

Handbag forming mold and forming mold assembly Technical Field

[0001] This invention relates to the field of tote bag manufacturing technology, and in particular to a tote bag forming mold and forming mold assembly. Background Technology

[0002] Handbags, as portable storage containers, have become an indispensable part of our daily lives. They are bags designed with handles or shoulder straps for easy carrying by hand or over the shoulder, and are typically made of various materials such as fabric, leather, plastic, and paper. For handbags made of various materials, structural stability and aesthetics are crucial factors in their design and manufacturing process. These factors not only affect the user experience but also directly impact the bag's practicality and durability. Therefore, more and more handbags feature inward-folding folds at the opening. These folds not only enhance the bag's structural stability but also improve its overall appearance. Furthermore, the folded opening provides additional protection, reducing friction and discomfort to the hands. Especially when the bag is loaded with heavy items, the folds distribute the weight, reducing pressure on the skin and muscles of the hands, making the user more comfortable.

[0003] In existing technologies, the production of tote bags with folded edges typically involves steps such as sheet cutting, forming, folding and fixing the edges. This is especially problematic for materials that are not easily deformed, such as paper bags. Using conventional multi-layer overlapping methods to fix the folded edges not only results in poor flatness at the folded edge, affecting aesthetics, but also significantly weakens the structural reinforcement provided by the folded edges. To address this, existing technologies, when producing tote bags from materials that are not easily deformed, involve folding the edges after the bag body is formed, using appropriate equipment. This process includes multiple steps such as outward folding, gluing, and inward folding. This not only involves numerous steps, affecting production efficiency, but also increases the probability of tearing and damage due to repeated folding, leading to a low yield rate.

[0004] Therefore, existing technologies suffer from low efficiency and low yield when producing tote bags with folded openings. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned deficiencies in the production of tote bags with folded openings in the prior art, and to provide a molding die that can be used for the production of tote bags with folded openings.

[0006] To more clearly illustrate the technical solution provided by this invention, the structure of the tote bag is first described as follows:

[0007] The tote bag includes a bottom surface, two front surfaces facing each other in the width direction of the bottom surface, and two side surfaces facing each other in the length direction of the bottom surface, with the opposite sides of the two side surfaces overlapping each other.

[0008] In order to improve the production efficiency and yield of the above-mentioned tote bags.

[0009] In a first aspect, the present invention provides a molding die for a tote bag. This molding die can be used to provide shape support for the bag body during the process of forming a tote bag from sheet material. When applied in a tote bag forming equipment, it can realize the synchronous forming of the bag body and the bag opening fold, thereby improving the production efficiency and yield of the tote bag with the above structure.

[0010] Specifically, this molding die includes a die body, and two first sidewalls, two second sidewalls, a bottom wall, and two bag-body limiting components disposed on the die body; wherein, the two first sidewalls are respectively adapted to the two front faces of the tote bag, the two second sidewalls are respectively adapted to the two sides of the tote bag, the bottom wall is adapted to the bottom surface of the tote bag, and the two bag-body limiting components are respectively adapted to the two first sidewalls. At least one of the two first sidewalls is reciprocally connected to the corresponding side of the die body along the height direction of the die body, and each bag-body limiting component and the corresponding first sidewall together limit the front face of the corresponding tote bag.

[0011] In this type of molding die, during the bag forming process, the bag opening edges can be pre-folded inward at both ends of the sheet material along its length before forming. When the sheet material is conveyed to the molding die and pressed down by the die to bring the pre-folded bag opening edges closer to the second sidewall, at least one of the two first sidewalls reciprocates along with the front of an adjacent bag relative to the die body. For example, when the molding die presses the pre-folded bag opening edges closer to the second sidewall, the two fronts of the bag are fixed to the corresponding first sidewalls by two bag body limiting components. One of the first sidewalls moves downward along the height of the die body, while the other first sidewall... The first sidewall remains stationary relative to the mold body; or one of the first sidewalls moves upward along the height direction of the mold body while the other first sidewall remains stationary relative to the mold body; or one of the first sidewalls moves upward along the height direction of the mold body while the other first sidewall moves downward along the height direction of the mold body. Using any of these operations, the two front faces of the tote bag can be misaligned along the height direction of the mold body, thus misaligning the two side portions adjacent to the two front faces. At this time, the connecting portion of the tote bag opening fold is also misaligned vertically. When the two first sidewalls are reset, the misaligned opening folds can interlock, and then, by using corresponding operations such as pressing, the bag body and opening fold can be formed simultaneously. Therefore, when using the tote bag forming mold provided by this invention to manufacture tote bags, the entire tote bag can be manufactured after the forming process is completed, eliminating the need for a separate opening folding device to perform other operations on the formed bag body. This not only simplifies the tote bag manufacturing process and improves manufacturing efficiency but also avoids the probability of the tote bag body being damaged by other operations after forming.

[0012] Furthermore, since the molding die provided by the present invention utilizes the relative movement of the two first side walls when forming the bag body, the folded edge of the bag opening of the tote bag can be connected by an insertion method. This not only avoids the poor flatness of the folded edge of the bag opening affecting the aesthetics, but also makes the insertion connection method more conducive to strengthening the bag body structure of the tote bag by the folded edge of the bag opening.

[0013] Therefore, by using the molding die provided by this invention, it is possible to produce more aesthetically pleasing and structurally stable tote bags with high efficiency and high yield.

[0014] Furthermore, in order to improve the success rate of bag opening folding and insertion, the molding die provided by the present invention also includes two folding opening components respectively disposed at corresponding positions on the two second side walls. When the bag opening folds that are pre-folded inward at both ends of the sheet material in the length direction are pressed close to the second side wall, the folding opening components can open the bag opening fold of the side of the two sides of the tote bag that is further away from the second side wall.

[0015] Using this structure, when the sheet material of the tote bag is pre-folded, even if the opening angle of the folded edge is small, or if the folded edge is stuck to the bag body due to static electricity or other factors, when the sheet material is pressed close to the second side wall, the folding edge opening component can accurately open the fold of the inserted bag opening edge. At least one of the two first side walls drives at least one front of the tote bag and moves at least one of the two sides of the tote bag back and forth relative to the mold body, so that the bag opening edge of the other side of the tote bag can be inserted into the bag opening edge of the other side, thus achieving a smooth insertion of the two bag opening edges. This can greatly improve the success rate of bag opening edge insertion and further improve the yield of tote bag production.

[0016] Secondly, the present invention also provides a molding die assembly for a tote bag, the molding die assembly including a receiving platform, the receiving platform forming a molding area, and a molding die as described above being disposed above the receiving platform at a position corresponding to the molding area; the molding die is movably disposed above the molding area in a vertical direction, and when the sheet material is conveyed to the molding area, the molding die moves from top to bottom so that the two front sides of the tote bag respectively abut against the two first side walls of the molding die.

[0017] Because the molding die assembly adopts the above-mentioned structure, it can simultaneously form the bag body and the bag opening fold when performing the bag forming process. This not only makes the molding die assembly more versatile, but also greatly improves the production efficiency of the bag. Attached Figure Description

[0018] Figure 1 is a three-dimensional structural diagram of the tote bag provided in an embodiment of the present invention;

[0019] Figure 2 is a three-dimensional structural diagram of the forming mold of the tote bag provided in the embodiment of the present invention in the initial state;

[0020] Figure 3 is a three-dimensional structural diagram of the forming mold of the tote bag provided in the embodiment of the present invention in the side insertion state;

[0021] Figure 4 is a three-dimensional structural diagram of the sheet material of the tote bag provided in an embodiment of the present invention;

[0022] Figure 5 is a three-dimensional structural diagram of the sheet material and molding die of the tote bag provided in an embodiment of the present invention;

[0023] Figure 6 is a three-dimensional structural diagram of the sheet material of the tote bag provided in the embodiment of the present invention after being inserted into the forming mold;

[0024] Figure 7 is a three-dimensional structural diagram of the sheet material of the tote bag provided in the embodiment of the present invention after being inserted into the forming mold and the forming mold.

[0025] Figure 8 is a three-dimensional structural diagram of the sheet material of the tote bag provided in an embodiment of the present invention after being inserted by the side insertion component.

[0026] Figure 9 is a three-dimensional structural diagram of the sheet material of the tote bag provided in the embodiment of the present invention after being inserted by the side insertion component and the forming mold.

[0027] Figure 10 is a three-dimensional structural diagram of the handbag insertion and folding process provided in an embodiment of the present invention;

[0028] Figure 11 is a partial structural schematic diagram of Figure 10;

[0029] Figure 12 is a schematic diagram illustrating the principle of the bag opening fold being opened by the air blowing component in an embodiment of the present invention;

[0030] Figure 13 is a schematic diagram of the connection structure of the bag opening fold of the tote bag provided in an embodiment of the present invention;

[0031] Figure 14 is a three-dimensional structural diagram of the molding die for a tote bag provided in an embodiment of the present invention, with one first sidewall removed;

[0032] Figure 15 is a schematic diagram of the structure of the guide component in the forming mold of the tote bag provided in an embodiment of the present invention;

[0033] Figure 16 is a three-dimensional structural schematic diagram of the molding die assembly for a tote bag provided in an embodiment of the present invention;

[0034] Figure 17 is a partial structural schematic diagram of the molding die assembly for a tote bag provided in an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached drawings: 10, Tote bag; 101, Front; 1011, First front; 1012, Second front; 102, Side; 103, Bottom; 104, Bag opening fold; 20, Sheet material; 201, Length direction; 100, Molding mold; 110, Mold body; 111, Height direction; 112, Thickness direction; 113, Connecting plate; 120, First side wall; 1201, Right first side wall; 1202, Left first side wall; 121, Vent hole; 130, Second side wall; 140, Bottom wall; 150, Bag body limiting assembly; 160, Fold opening component; 170, Guide component; 180, Drive component; 191, Solenoid valve; 192, Vacuum generator; 200, Receiving platform; 210, Molding area; 300, Side insertion assembly; 400. Lifting assembly; 500. Bag removal assembly; 510. Bag removal belt; 600. Pressing assembly. Detailed Implementation

[0036] The bag opening is one of the most easily worn parts of a tote bag. Folding the opening edge can effectively increase its durability and extend the tote bag's lifespan. However, for tote bags made of materials that are not easily deformed, the opening edge should not be connected by a simple overlapping method. Otherwise, it will not only result in poor flatness at the folded edge but also greatly weaken the structural reinforcement performance of the opening edge on the tote bag.

[0037] In response, the folding of the opening of a tote bag made of non-deformable materials often needs to be done after the bag body is formed. For example, a separate folding device can be set up after the tote bag forming device to fold the opening of the tote bag, thereby avoiding the above-mentioned problems.

[0038] However, since the forming process of tote bags has already created a three-dimensional bag body, folding the edges of the bag body requires the coordinated processing of multiple mechanisms, making the process relatively complex and affecting the production efficiency of tote bags. Furthermore, folding the edges of the bag body also carries the risk of damaging the bag body, affecting the yield of finished tote bags.

[0039] Therefore, improving the production efficiency and yield of the above-mentioned structured tote bags is an urgent problem to be solved in the tote bag industry.

[0040] Therefore, the present invention provides a molding die for making tote bags. When the molding die is used to make tote bags, the two first side walls move relative to each other, so that the folded edge of the bag opening can be connected by an interlocking method. Then, by using corresponding operations such as pressing, the bag body and the folded edge of the bag opening can be formed simultaneously. This can improve the production efficiency of tote bags and avoid the probability of the bag body being pulled and damaged by other operations after forming. Thus, it can achieve high efficiency and high yield to produce more beautiful and structurally stable tote bags.

[0041] To more clearly illustrate the solution of the present invention, examples are provided below in conjunction with the accompanying drawings.

[0042] Please refer to Figure 1. First, the structure of the tote bag 10 will be explained as follows:

[0043] The tote bag 10 includes a bottom surface 103, two front surfaces 101 disposed opposite each other in the width direction of the bottom surface 103, and two side surfaces 102 disposed opposite each other in the length direction of the bottom surface 103, with the opposite sides of the two side surfaces 102 overlapping each other.

[0044] It should be understood that, in this invention, the connection position of the two sides 102 of the tote bag 10 relative to each other is not limited. For example, it can be located at halfway along the width direction of the side 102 of the tote bag 10 (as shown in Figure 1), or it can be located at one end of the width direction of the side 102 of the tote bag 10.

[0045] The material of the tote bag 10 is not limited; for example, it can be non-woven fabric, leather, plastic, paper, etc.

[0046] The purpose of this invention is to achieve high efficiency and high yield in producing the above-mentioned tote bag 10, which is aesthetically pleasing and has a stable bag structure.

[0047] Therefore, in one embodiment of the present invention, please refer to Figures 2 and 3, a forming mold 100 for a tote bag is provided. The forming mold 100 can be used to provide shape support for the bag body during the process of forming the sheet material 20 into a tote bag 10. The forming mold 100 includes a mold body 110, and two first side walls 120, two second side walls 130, a bottom wall 140, and two bag body limiting components 150 disposed on the mold body 110.

[0048] In the sidewall design of each molding die 100, two first sidewalls 120 are adapted to the two front faces 101 of the tote bag 10, two second sidewalls 130 are adapted to the two side faces 102 of the tote bag 10, a bottom wall 140 is adapted to the bottom surface 103 of the tote bag 10, and two bag body limiting components 150 are adapted to the two first sidewalls 120. Thus, the molding die 100 can support each face of the tote bag 10 using the two first sidewalls 120, the two second sidewalls 130, and the bottom wall 140, thereby providing shape support for the bag body during the process of forming the sheet material 20 into the tote bag 10, and each bag body limiting component 150 and the corresponding first sidewall 120 together limit the front face 101 of the corresponding tote bag 10.

[0049] Furthermore, for the tote bag 10 with the above structure, before the tote bag 10 is formed from the sheet material 20 into the bag body, the bag opening fold 104 can be pre-folded inward at both ends of the sheet material 201 along the length direction (see the state shown in Figure 4), and then the side 102 of the bag body and the bag opening fold 104 can be sealed simultaneously during the process of forming the tote bag 10 from the sheet material 20 into the bag body.

[0050] Taking a tote bag 10 made of a material that is not easily deformable, such as a paper bag, in order to avoid poor flatness at the connection of the bag opening fold 104 and affect the structural reinforcement performance of the bag opening fold 104 on the tote bag 10,

[0051] In one embodiment of the present invention, at least one of the two first sidewalls 120 is reciprocally connected to the corresponding side of the mold body 110 along the height direction 111 of the mold body 110. In use, since the two front faces 101 of the tote bag 10 are respectively fixed to the corresponding first sidewalls 120 by the two bag-body limiting components 150 (as shown in Figures 8 and 9), when the two first sidewalls 120 move relative to each other, the two front faces 101 of the tote bag 10 can be misaligned in the height direction 111 of the mold body 110 (as shown in Figures 10 and 11), thereby causing the two side faces 102 adjacent to the two front faces 101 to partially misalign. At this time, the connecting portion of the bag opening folded edge 104 of the tote bag 10 is also vertically misaligned. When the two first sidewalls 120 are reset, the misaligned bag opening folds 104 can be interlocked (as shown in Figure 13). Then, by using the corresponding operation of the pressing component 600 and other structures, the bag body and bag opening folds 104 of the tote bag 10 can be formed simultaneously (as shown in Figure 1). The connection of the bag opening folds 104 is sealed by interlocking, which not only avoids the poor flatness of the connection of the bag opening folds 104 of the tote bag 10 from affecting the aesthetics, but also helps the bag opening folds 104 to strengthen the bag body structure of the tote bag 10.

[0052] In the process of forming the tote bag 10 using the above-mentioned molding mold 100, the entire tote bag 10 can be made after the molding process is completed. There is no need to set up a separate bag opening folding device to perform other operations on the formed bag body. This not only simplifies the manufacturing process of the tote bag 10 and improves the manufacturing efficiency of the tote bag 10, but also avoids the probability of the tote bag 10 being pulled and damaged by other operations after molding.

[0053] Therefore, when using the molding die 100 provided in this embodiment of the present invention to manufacture a tote bag 10, it is possible to produce a tote bag 10 with good aesthetics and good structural stability with high efficiency and high yield.

[0054] The specific structure and working principle of the forming mold 100 for tote bags provided by the present invention will be further described in detail below:

[0055] Regarding the mold body 110 of the molding die 100:

[0056] Please refer to Figures 1, 2, and 14. The mold body 110 is the main structure of the entire molding mold 100, providing structural support for the two first side walls 120, the two second side walls 130, the bottom wall 140, and the two bag-body limiting components 150. The structure of the mold body 110 is not limited; it can be a frame structure, such as a mold body 110 formed by splicing horizontal and vertical beams. The mold body 110 is made of a material with high hardness, such as steel.

[0057] It should be understood that the two first sidewalls 120, the two second sidewalls 130, and the bottom wall 140 can all be detachably connected to the mold body 110, for example, by bolts. When manufacturing the tote bag 10, for different sizes of tote bags 10, only the corresponding sidewalls can be replaced to adjust the overall size of the molding mold 100, or a dedicated mold changing system can be set up to replace the entire molding mold 100.

[0058] Regarding the two first sidewalls 120 of the molding die 100:

[0059] Please refer to Figures 1, 2, and 14. The two first sidewalls 120 are respectively adapted to the two front faces 101 of the tote bag 10 and are used to support the two front faces 101 of the tote bag 10. That is, during the forming process of the tote bag 10, the two front faces 101 of the tote bag 10 are respectively wrapped around the corresponding first sidewalls 120.

[0060] The structure of the two first sidewalls 120 is not limited. For example, they can both be set as flat plate structures, which can ensure that the surface of the tote bag 10 is flat and smooth, which helps to reduce the shape distortion of the tote bag 10 caused by mold deformation, thereby improving the molding quality of the tote bag 10.

[0061] The connection method between the two first sidewalls 120 and the mold body 110 is not required to be unique.

[0062] In one embodiment, one of the two first sidewalls 120 is movably connected to the mold body 110, and the other first sidewall 120 is fixed to the mold body 110 as a whole.

[0063] In this embodiment, one possible solution is that a first sidewall 120 drives a front side 101 of the tote bag 10 to move downward along the height direction of the mold body 110 and then upward, so that the bag opening folds 104 of the two sides 102 adjacent to the front side 101 of the tote bag 10 are respectively inserted into the bag opening folds 104 of the two sides 102 adjacent to the other front side 101.

[0064] To illustrate this scheme more clearly, refer to Figures 3, 6, 8, and 11. One front side 101 (referred to as "first front side 1011") is defined as the first front side 101, which corresponds to the right first side wall 1201 (see Figure 3). The other front side 101 (referred to as "second front side 1012") corresponds to the left first side wall 1202 (see Figure 3).

[0065] In the initial state, the opening folds 104 of the four sides 102 of the tote bag 10 (two adjacent to the first front 1011 and two adjacent to the second front 1012) have not yet been inserted (as shown in Figures 8 and 9).

[0066] When the bag opening fold 104 needs to be inserted, the first side wall 1201 on the right side drives the first front side 1011 to move downward along the height direction 111 of the mold body 110 (as shown in Figures 10 and 11). When the first front side 1011 descends to a certain position, the bag opening folds 104 of its two adjacent sides 102 will naturally bend inward to prepare for subsequent insertion.

[0067] Next, the first sidewall 1201 on the right side drives the first front side 1011 to move upward along the height direction 111 of the mold body 110. During this process, the bag opening folds 104 of the two adjacent sides 102 of the first front side 1011 will be inserted into the bag opening folds 104 of the two adjacent sides 102 of the second front side 1012, completing the insertion (as shown in Figure 13).

[0068] Another possible solution is that a first sidewall 120 drives one front side 101 of the tote bag 10 to move upward along the height of the mold body 110 and then downward, so that the bag opening folds 104 of the two sides 102 adjacent to the other front side 101 are respectively inserted into the bag opening folds 104 of the two sides 102 adjacent to the front side 101.

[0069] To illustrate this solution more clearly, it is not shown in the figure. For easier understanding, please refer to Figures 3, 6, 8, and 11. Similarly, one front side 101 can be referred to as "first front side 1011". The first front side 1011 corresponds to the right first side wall 1201 of the two first side walls 120. The other front side 101 can be referred to as "second front side 1012". The second front side 1012 corresponds to the left first side wall 1202.

[0070] In the initial state, the flaps 104 of the four sides 102 of the tote bag 10 (two adjacent to the first front 1011 and two adjacent to the second front 1012) have not yet been inserted.

[0071] When the bag opening fold 104 needs to be inserted, the opposite of the first scheme, the right first sidewall 1201 first moves the first front face 1011 upward along the height direction 111 of the mold body 110. When the first front face 1011 rises to a certain position, the bag opening folds 104 of its two adjacent sides 102 will also change accordingly.

[0072] Then, the first sidewall 1201 on the right side moves the first front side 1011 downward along the height direction 111 of the mold body 110. At this time, the bag opening folds 104 of the two adjacent sides 102 of the second front side 1012 will be inserted into the bag opening folds 104 of the two adjacent sides 102 of the first front side 1011, thus completing the insertion.

[0073] In another embodiment, both first sidewalls 120 are movably connected to the mold body 110 along the height direction of the mold body 110. In use, one first sidewall 120 can drive one front side 101 of the tote bag 10 to move downward along the height of the mold body 110 and then upward, while the other first sidewall 120 can drive one front side 101 of the tote bag 10 to move upward along the height of the mold body 110 and then downward, so that the bag opening folds 104 of the two sides 102 adjacent to one front side 101 are respectively inserted into the bag opening folds 104 of the two sides 102 adjacent to the other front side 101.

[0074] For clarity, this scheme is not shown in the figure. For ease of understanding, please refer to Figures 3, 6, 8, and 11. Similarly, one front side 101 can be called "first front side 1011". The first front side 1011 corresponds to the right first side wall 1201 of the two first side walls 120. The other front side 101 can be called "second front side 1012". The second front side 1012 corresponds to the left first side wall 1202.

[0075] In the initial state, the flaps 104 of the four sides 102 of the tote bag 10 (two adjacent to the first front 1011 and two adjacent to the second front 1012) have not yet been inserted.

[0076] When the bag opening fold 104 needs to be inserted, the right first sidewall 1201 moves the first front face 1011 downward along the height direction 111 of the mold body 110. This action causes the bag opening folds 104 of the two adjacent sides 102 of the first front face 1011 to begin to bend inward (closer to the mold side), preparing for the subsequent insertion. Then, the right first sidewall 1201 moves the first front face 1011 upward.

[0077] Simultaneously, the first sidewall 1202 on the left side causes the adjacent second front panel 1012 to move upward along the height direction 111 of the mold body 110. This action also causes the bag opening folds 104 of the two adjacent sides 102 of the second front panel 1012 to change (begin to bend away from the mold side), preparing for insertion. Then, the first sidewall 1202 on the left side causes the second front panel 1012 to move downward.

[0078] It should be understood that in this embodiment, the right first sidewall 1201 and the left first sidewall 1202 can operate simultaneously, or one can operate slightly later than the other, depending on the actual needs.

[0079] During the reciprocating movement of the right first sidewall 1201 and the left first sidewall 1202 in two directions, the pocket opening folds 104 of the two adjacent sides 102 of the first front 1011 are inserted into the pocket opening folds 104 of the two adjacent sides 102 of the second front 1012. In this way, the pocket opening of the tote bag 10 completes the insertion process.

[0080] In this embodiment, by controlling the movement of the two first sidewalls 120, the travel distance of each first sidewall 120 can be reduced, thereby improving the insertion efficiency of the bag opening fold 104.

[0081] In the various configurations of the first sidewall 120 described above, when the first sidewall 120 is movably connected to the mold body 110, it can be a sliding connection or a rolling connection.

[0082] In one feasible implementation, referring to FIG14, the molding die 100 further includes a guide member 170 disposed between at least one of the two first sidewalls 120 and the die body 110, and a drive member 180 for driving at least one of the two first sidewalls 120 to move.

[0083] Specifically, the guide member 170 is fixedly connected to the mold body 110 and located inside the corresponding first side wall 120. The guide member 170 extends at a preset angle relative to the height direction 111 of the mold body 110. For example, in the height direction 111 of the mold body 110, the upper end of the guide member 170 is further away from the inner wall of the corresponding first side wall 120 than the lower end.

[0084] When the first sidewall 120 is connected to the mold body 110, it can be slidably connected to the guide member 170. The driving member 180 is fixedly connected to the mold body 110 and located on one side of the guide member 170. The driving end of the driving member 180 is connected to the first sidewall 120 in a transmission connection so as to drive the first sidewall 120 to move along the guide member 170.

[0085] Regarding the structure and arrangement of the guide member 170, please refer to Figure 14. The guide member 170 may include multiple guide rails, for example, four guide rails are provided. The four guide rails are evenly arranged in the plane where the inner wall surface of the first side wall 120 is located, such as symmetrically arranged in pairs.

[0086] Please refer to Figure 15 for further details. The length of each guide rail is set as follows: L≥H / cosA; where L is the length of the guide rail; H is the width of the bag opening fold 104; and A is the preset angle of the guide rail tilt.

[0087] It should be understood that the number of guide rails is not limited to 4; it can also be 2, 3, 5, or other numbers. The preset angle of the guide rail tilt is not limited; for example, it can be set between 10° and 30°. The width of the bag opening fold 104 can be determined according to the specific bag shape of the tote bag 10.

[0088] Furthermore, when the first sidewall 120 is connected to the guide rail, a slider may be provided on the inner wall surface of the first sidewall 120, and the first sidewall 120 is slidably connected to the guide rail through the slider.

[0089] The structure and number of drive components 180 are not limited. For example, drive components 180 can be cylinders, electric push rods, etc. There can be two drive components 180. The two drive components 180 can be distributed on both sides of the first side wall 120 in its width direction, which is beneficial to the stability of the first side wall 120 when it moves.

[0090] Regarding the control of the drive component 180, it can be that the drive component 180 has its own control element (see Figures 2 and 3), or it can be that a solenoid valve 191 is set on the mold body 110. When the drive component 180 is set as an electric cylinder or an electric push rod, the solenoid valve 191 is electrically connected to the electric cylinder or electric push rod. When the solenoid valve 191 controls the push rod of the electric cylinder or electric push rod to extend, it can drive the first side wall 120 to move up or down, so as to achieve the misalignment of the bag opening folds 104 on both sides of the side 102 of the tote bag 10. When the solenoid valve 191 controls the push rod of the electric cylinder or electric push rod to retract, it can drive the first side wall 120 to reset, so as to achieve the insertion of the bag opening folds 104 on both sides of the side 102 of the tote bag 10. This can accurately control the movement distance of the first side wall 120, thereby further improving the stability of the insertion of the bag opening folds 104.

[0091] In this embodiment, by providing a guide member 170, precise guidance is provided for the movement of the first sidewall 120, ensuring the stability and accuracy of the first sidewall 120 during the movement process, thereby improving the accuracy of the bag opening fold 104 insertion.

[0092] Furthermore, in the height direction 111 of the mold body 110, the guide member 170 is designed to be inclined, that is, the upper end of the guide member 170 is further away from the inner wall of the corresponding first side wall 120 than the lower end. This design helps to insert the bag opening folds 104 on both sides of the side 102 with a larger area first, and then gradually insert them to the required position. This is more conducive to the success rate of inserting the bag opening folds 104 on both sides of the side 102.

[0093] In the various configurations of the first sidewall 120 described above, when the first sidewall 120 is fixedly connected to the mold body 110, the first sidewall 120 and the mold body 110 can be fixedly connected by bolts.

[0094] Specifically, the first sidewall 120 may include multiple strip plates, which are bolted to the edge of the mold body 110 in its width direction, or multiple strip plates are bolted to the periphery of the mold body 110, and the first sidewall 120 is formed by overlapping multiple strip plates.

[0095] Based on the structure and arrangement of the first sidewall 120 described above, the structure and arrangement of the two bag limiting components 150 are explained below:

[0096] Of the two bag-body limiting assemblies 150, the bag-body limiting assembly 150 adapted to the first sidewall 120 of the two first sidewalls 120 that is reciprocally movable relative to the mold body 110 includes a gripping component, which is fixedly disposed on the outer wall surface of the corresponding first sidewall 120; the bag-body limiting assembly 150 adapted to the first sidewall 120 of the two first sidewalls 120 that is fixedly disposed on the mold body 110 includes a pressing component, which is separably pressed against the outer wall surface of the first sidewall 120 along the thickness direction 112 of the mold body 110.

[0097] It should be understood that if both first sidewalls 120 are reciprocally connected to the corresponding side of the mold body 110 along the height direction 111 of the mold body 110, both bag limiting components 150 can be configured as gripping components.

[0098] If one first sidewall 120 is reciprocally connected to the corresponding side of the mold body 110 along the height direction 111 of the mold body 110, and the other is fixedly disposed on the corresponding side of the mold body 110, then one of the two bag limiting components 150 is configured as a gripping component and the other is configured as a pressing component.

[0099] By setting a gripping component on the movable first sidewall 120, the gripping component can not only fix the tote bag 10, but also move synchronously with the first sidewall 120. The insertion of the bag opening fold 104 of the tote bag 10 can be achieved on the basis of simplifying the structure of the molding die 100 as much as possible.

[0100] Of course, in both of the above cases, both bag limiting components 150 can be set as pressing components. The pressing component corresponding to the movable first side wall 120 is set on one side of the first side wall 120 through the lifting component. That is, the first side wall 120 can move synchronously with the corresponding pressing component to fix the front 101 of the tote bag 10 on the movable first side wall 120.

[0101] The structure of the lifting component is not limited; for example, it can be a lifting motor, a lifting cylinder, etc.

[0102] The specific structure and configuration of the gripping component are not limited; for example, it can be a suction cup, a gripper, etc.

[0103] In one embodiment, referring to Figures 2 and 3, the gripping component includes multiple suction cups (see the structure shown in 150), and multiple suction cup mounting holes are formed on the corresponding first sidewall 120. The multiple suction cup mounting holes are evenly distributed and penetrate the first sidewall 120. Each suction cup is respectively disposed in the corresponding suction cup mounting hole, and the edge of the suction nozzle of the suction cup is flush with the outer wall surface of the corresponding first sidewall 120. The suction cup is connected to the vacuum generator pipeline.

[0104] There is no limit to the number of suction cups that can be set, such as 4, 5, or any other number.

[0105] Furthermore, the suction cup can be extended and disposed in the suction cup mounting hole. For example, the suction cup can be extended and disposed on the wall of the suction cup mounting hole by means of an electric telescopic rod. When the molding mold 100 moves from top to bottom to the front 101 of the bag body close to the first side wall 120, the suction cup extends, sucks on the front 101 of the corresponding side of the bag body and retracts into the suction cup mounting hole, so that the front 101 of the bag body is attached to the outer wall surface of the first side wall 120.

[0106] In this embodiment, the suction cup gripping component is relatively simple to operate, allowing for quick and accurate gripping and release of the tote bag 10. This shortens the production cycle. Multiple suction cups are evenly distributed throughout the first sidewall 120, ensuring uniform suction force when gripping the front 101 of the tote bag 10, preventing misalignment or deformation of the tote bag 10 during the forming process. The suction nozzle edge is flush with the outer wall surface of the first sidewall 120, making the gripping component more stable when contacting the tote bag 10, reducing damage caused by friction or collision. Furthermore, the suction cups do not scratch or indent the surface of the tote bag 10 when gripping it, protecting the integrity and aesthetics of the tote bag 10.

[0107] In another embodiment, not shown, the gripping component includes a clamping member disposed on the top edge of the corresponding first sidewall 120. The clamping member may be an electric gripper, a pneumatic gripper, a clamping plate, etc. When the front 101 of the tote bag 10 is close to the corresponding first sidewall 120, the clamping member and the first sidewall 120 together clamp the corresponding front 101 of the tote bag 10.

[0108] In this embodiment, the clamping member can be disposed on the top edge of the first side wall 120. When the molding mold 100 moves from top to bottom to the front 101 of the bag body close to the first side wall 120, the electric gripper automatically clamps the upper edge of the front 101 of the tote bag 10, so that it is fixed relative to the first side wall 120. This design can ensure that the tote bag 10 is accurately clamped and positioned during the molding process.

[0109] In addition, the clamping components are highly adjustable, which can not only adapt to tote bags 10 of different thicknesses and materials, but also limit the corresponding front side 101 of the tote bag 10 in various directions, resulting in a low probability of detachment.

[0110] The specific structure and arrangement of the pressing component are not limited; for example, it can be a pressure plate, track, etc.

[0111] In one embodiment, the pressing component includes a flexible pressing member and a movable seat. The flexible pressing member can be a rubber plate. The movable seat is movably disposed on the frame along the thickness direction 112 of the mold body 110. The flexible pressing member is fixedly connected to the movable seat and extends toward the corresponding first side wall 120. When the front side 101 of the tote bag 10 approaches the corresponding first side wall 120, the movable seat moves closer along the thickness direction 112 of the mold body 110, so that the flexible pressing member squeezes the front side 101 of the tote bag 10 and fixes it to the corresponding first side wall 120.

[0112] When the forming mold 100 is used to form the bag body of the tote bag 10, when the forming mold 100 is lowered to its lowest position, the sheet material 20 bends toward the forming mold 100 under the limiting action of the components around the forming mold 100 (e.g., the inner wall surface of the forming mold receiving area). At this time, the front face 101 of the tote bag 10 will approach the first side wall 120. Furthermore, in subsequent steps, other components (e.g., flexible pressing components) on the side of the forming mold 100 can be used to press the front face 101 of the tote bag 10 so that the front face 101 of the tote bag 10 is completely in contact with the first side wall 120.

[0113] Furthermore, based on the structure and arrangement of the first sidewall 120 described above, referring to Figures 2 and 3, in this embodiment of the invention, at least one of the two first sidewalls 120 is also provided with a vent hole 121. The vent hole 121 may be provided on both first sidewalls 120, or it may be provided on only one of the first sidewalls 120. The vent hole 121 may be a plurality of strip-shaped holes formed on the first sidewall 120, for example, three, four, or five strip-shaped holes may be provided.

[0114] By setting the ventilation hole 121, a vacuum can be avoided between the front 101 of the bag 10 and the outer wall of the first side wall 120, which would interfere with the subsequent bag removal.

[0115] Regarding the two second sidewalls 130 of the molding die 100:

[0116] Referring to Figures 2 and 3, the two second sidewalls 130 are respectively adapted to the two sides 102 of the tote bag 10 to support the two sides 102 of the tote bag 10. That is, during the forming process of the tote bag 10, the two sides 102 of the tote bag 10 are respectively wrapped around the corresponding second sidewalls 130.

[0117] The structure of the two second sidewalls 130 is not limited. For example, they can both be set as flat plate structures, which can ensure that the surface of the tote bag 10 is flat and smooth, which helps to reduce the problem of shape distortion of the tote bag 10 caused by mold deformation, thereby improving the molding quality of the tote bag 10.

[0118] The connection method between the two second sidewalls 130 and the mold body 110 is not limited to one. For example, the two second sidewalls 130 can be detachably connected to the mold body 110 by bolts, thereby fixing them together with the mold body 110.

[0119] Furthermore, in the molding die 100 provided by the present invention, in order to improve the success rate of inserting the bag opening fold 104, the molding die 100 provided by the present invention also includes two fold opening components 160 respectively disposed at corresponding positions on the two second side walls 130. When the bag opening fold 104, which is pre-folded inward at both ends of the sheet material 20 in the length direction, is pressed close to the second side wall 130, the fold opening component 160 can open the bag opening fold 104 of the side of the two sides 102 of the tote bag 10 that is further away from the second side wall 130.

[0120] Using this structure, when the sheet material 20 of the tote bag 10 is pre-folded inward to form the bag opening fold 104, even if the opening angle of the bag opening fold 104 is small, or if the bag opening fold 104 is stuck to the bag body due to static electricity or other factors, when the sheet material 20 is pressed close to the second side wall 130, the fold opening component 160 can accurately open the fold of the inserted bag opening fold 104. At least one of the two first side walls 120 drives at least one front side 101 of the tote bag 10 and links at least one of the two sides 102 of the tote bag 10 to move back and forth relative to the mold body 110, so that the bag opening fold 104 of the other side 102 of the tote bag 10 can be inserted into the bag opening fold 104 of the other side 102, thereby realizing the smooth insertion of the two bag opening folds 104. This can greatly improve the success rate of inserting the bag opening fold 104 and further improve the yield of the tote bag 10.

[0121] The structure and arrangement of the two folded-edge opening components 160 are described in further detail below.

[0122] In one embodiment, both folded opening components 160 include an air suction member (the structure shown in Figures 2 and 3), wherein the air suction member is disposed on the second side wall 130, and the air suction member corresponds to the position of the bag opening folded edge 104 of the side 102 of the corresponding side of the handbag 10 in the height direction 111 of the mold body 110, and the air suction port of the air suction member is flush with the outer wall surface of the second side wall 130.

[0123] In this embodiment, the suction component can be a suction cup, and a corresponding mounting hole is provided on the second side wall 130. The suction cup is installed in the mounting hole, and the suction port of the suction cup is flush with the outer wall surface of the second side wall 130.

[0124] During use, when the pre-folded bag opening edges 104 at both ends of the sheet material 20 in the length direction are pressed close to the second side wall 130, the suction component generates negative pressure (i.e., pressure lower than atmospheric pressure) through the suction port, attracting the bag opening edge 104 material and making it adhere tightly to the suction port. With the continuous action of suction, the bag opening edge 104 is gradually pulled open, thereby achieving the purpose of opening the bag opening edge 104. Utilizing this structure, when the sheet material 20 of the tote bag 10 is pre-folded inward to form the bag opening edge 104, even if the opening angle of the bag opening edge 104 is small, or if other factors such as static electricity cause the bag opening edge 104 to adhere to the bag body, when the sheet material 20 is pressed close to the second side wall 130, the fold opening component 160 can accurately open the fold of the inserted bag opening edge 104, which can greatly improve the success rate of inserting the bag opening edge 104.

[0125] Furthermore, a vacuum generator 192 is also provided on the mold body 110. The vacuum generator 192 is connected to the suction component pipeline and is used to provide negative pressure to the suction component.

[0126] Furthermore, by aligning the suction port of the suction cup with the outer wall surface of the second side wall 130, the bag opening fold 104 can adhere to the outer wall surface of the second side wall 130 when it is sucked open, thereby making the opening angle of the bag opening fold 104 more uniform.

[0127] In another embodiment, both folded opening components 160 include an air blowing member (this embodiment is not shown). The air blowing member is provided with a second sidewall 130, and the air blowing member is located in the area below the bag opening folded edge 104 of the side 102 of the corresponding side of the handbag 10 in the height direction 111 of the mold body 110. The air blowing port of the air blowing member is flush with the outer wall surface of the second sidewall 130.

[0128] In this embodiment, the air blowing component can be configured as an air blowing nozzle. A corresponding mounting hole is provided on the second sidewall 130, and the air blowing nozzle is installed within the mounting hole, with the air outlet of the nozzle flush with the outer wall surface of the second sidewall 130. The air blowing nozzle can be connected to an external air pump pipeline.

[0129] During use, when the pre-folded bag opening edges 104 at both ends of the sheet material 20 in the length direction are pressed close to the second side wall 130, as shown in Figure 12, the air pressure blown out by the air nozzle first acts on the side 102 of the tote bag 10. Part of the airflow will flow along the side 102 of the tote bag 10 towards the bag opening to the position of the bag opening edges 104. At this time, the tension generated by the airflow at the bag opening will cause the bag opening edges 104 to open, thereby achieving the purpose of opening the bag opening edges 104. With this structure, when the sheet material 20 of the tote bag 10 is folded inward to form the bag opening fold 104, even if the opening angle of the bag opening fold 104 is small, or if the bag opening fold 104 is stuck to the bag body due to static electricity or other factors, when the sheet material 20 is pressed close to the second side wall 130, the fold opening component 160 can still accurately open the fold of the inserted bag opening fold 104, which can greatly improve the success rate of inserting the bag opening fold 104.

[0130] Furthermore, by aligning the air inlet of the air blowing component with the outer wall surface of the second side wall 130, interference between the air blowing component and the side 102 of the handbag 10 can be avoided.

[0131] Regarding the bottom wall 140 of the molding die 100:

[0132] Please refer to Figures 2 and 3. The bottom wall 140 is adapted to the bottom surface 103 of the tote bag 10 to support the bottom surface 103 of the tote bag 10. That is, during the forming process of the tote bag 10, the bottom surface 103 of the tote bag 10 is wrapped around the corresponding bottom wall 140.

[0133] The structure of the bottom wall 140 is not limited. For example, it can be set as a flat plate structure, which can ensure that the surface of the tote bag 10 is flat and smooth, which helps to reduce the problem of shape distortion of the tote bag 10 caused by mold deformation, thereby improving the molding quality of the tote bag 10.

[0134] The connection method between the bottom wall 140 and the mold body 110 is not limited to one. For example, the bottom wall 140 can be detachably connected to the mold body 110 by bolts, thereby fixing it as one with the mold body 110.

[0135] Furthermore, in order to achieve relative fixation between the bottom surface 103 of the tote bag 10 and the bottom wall 140, a bottom support plate can be provided below the bottom wall 140. The bottom support plate can be moved upward to achieve relative fixation between the bottom surface 103 of the tote bag 10 and the bottom wall 140.

[0136] Alternatively, the molding die 100 may also include an adsorption component, which may be a suction cup. The adsorption component is disposed on the bottom wall 140 and is used to adsorb the bottom surface 103 of the tote bag 10 and make the bottom surface 103 of the tote bag 10 adhere to the outer wall surface of the bottom wall 140. That is, the bottom surface 103 of the tote bag 10 and the bottom wall 140 can be relatively fixed without setting a bottom support plate.

[0137] Based on the above-described molding die 100, referring to Figures 16 and 17, the present invention also provides a molding die assembly for a tote bag. The molding die assembly includes a receiving platform 200, the receiving platform 200 forming a molding area 210, and a molding die 100 with the above-described structure is disposed above the receiving platform 200 at a position corresponding to the molding area 210. The molding die 100 is movably disposed above the molding area 210 in the vertical direction.

[0138] Furthermore, the molding die assembly also includes a side insert assembly 300 disposed below the receiving platform 200 and movable along the thickness direction 112 of the die body 110. When the molding die 100 moves from top to bottom and the sheet material 20 bends toward the two first side walls 120 of the die body 110, the side insert assembly 300 moves toward the die body 110 to press the opposite sides of the two sides 102 of the tote bag 10 toward the second side wall 130. The side insert assembly 300 may be a side insert plate movable along the thickness direction 112 of the die body 110.

[0139] Furthermore, the molding die assembly also includes a lifting component 400 disposed above the receiving platform 200. A connecting plate 113 is fixedly disposed above the die body 110, and the die body 110 is connected to the drive end of the lifting component 400 through the connecting plate 113. The lifting component 400 may include a lifting motor and a transmission component. The transmission component may be a transmission belt. One end of the transmission belt is connected to the drive shaft of the lifting motor through a pulley, and the other end of the transmission belt is connected to the connecting plate 113 through a pulley, thereby enabling the lifting motor to move the molding die 100 vertically in conjunction with the transmission belt.

[0140] In use, for example, when the sheet material 20 is conveyed to the forming area 210 (see the states shown in Figures 5 and 16), the lifting motor drives the forming mold 100 to descend, so that the two front sides 101 of the sheet material 20 gradually bend toward the outer periphery of the forming mold 100 under the combined action of the forming mold 100 and the receiving platform 200 (see the state shown in Figure 6), and then the side insert assembly 300 pushes the two side sides 102 to bend toward the two second side walls 130 respectively (see the state shown in Figure 9).

[0141] It is important to understand that after the side insertion assembly 300 pushes the two side surfaces 102 to bend towards the two second side walls 130 respectively, and the connection points of the two side surfaces 102 coincide, the gripping component or pressing component is then controlled to fix the two front surfaces 101 to the outer wall surface of the first side wall 120 respectively. Based on the design of the molding mold 100 described above, a gripping component, such as a suction cup, can be provided on the right first side wall 1201 to fix the first front surface 1011 to the right first side wall 1201; a pressing component is provided on one side of the left first side wall 1202, and the pressing component is controlled to move towards the molding mold 100 to fix the second front surface 1012 to the left first side wall 1202 (as shown in Figure 7).

[0142] In this embodiment, the molding die assembly also includes a bag removal assembly 500. Specifically, referring to Figures 16 and 17, the bag removal assembly 500 includes a bag removal belt 510 facing the die body 110, and the bag removal belt 510 can move along the thickness direction 112 of the die body 110. After the two sides 102 are pushed to bend toward the two second side walls 130 by the side insertion assembly 300, the bag removal belt 510 of the bag removal assembly 500 can be controlled to approach the first side wall 120. The bag removal belt 510 of the bag removal assembly 500 presses and fixes the front side 101 of the tote bag 10 between it and the first side wall 120.

[0143] The molding die assembly provided by the present invention adopts the molding die 100 with the above structure, which enables the molding die assembly to simultaneously form the bag body and the bag opening fold 104 of the tote bag 10 when performing the molding process of the tote bag 10. This not only makes the function of the molding die assembly more diversified, but also greatly improves the production efficiency of the tote bag 10.

[0144] The specific embodiments described above illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the invention, many specific details are included in the above description. The present invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0145] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0146] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", 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 the product of the invention is usually placed in during use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0147] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0148] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

Claims

1. A forming mold for a tote bag, used to provide shape support for the bag body during the process of forming the tote bag from sheet material, the tote bag comprising a bottom surface, two front surfaces opposite each other in the width direction of the bottom surface, and two side surfaces opposite each other in the length direction of the bottom surface, wherein the opposite sides of the two side surfaces overlap each other; characterized in that, The molding die includes a die body, two first sidewalls adapted to the two front faces of the tote bag, two second sidewalls adapted to the two sides of the tote bag, a bottom wall adapted to the bottom surface of the tote bag, and two bag-body limiting components adapted to the two first sidewalls respectively; wherein, At least one of the two first sidewalls is reciprocally connected to the corresponding side of the mold body along the height direction of the mold body; Each of the bag-body limiting components, together with a corresponding first sidewall, limits the front of the corresponding tote bag; and When the pre-folded bag opening edges at both ends of the sheet material in the length direction are pressed close to the second side wall, at least one of the two first side walls and the front of the adjacent tote bag reciprocate together relative to the mold body, so that the bag opening edges at the upper ends of the two sides of the tote bag interlock with each other in the height direction of the mold body.

2. The forming mold for the tote bag as described in claim 1, characterized in that, in Of the two bag-body limiting assemblies, the bag-body limiting assembly adapted to the first sidewall of the two first sidewalls that is reciprocally movable relative to the mold body includes a gripping component, which is fixedly disposed on the outer wall surface of the corresponding first sidewall; and Of the two bag-body limiting components, the bag-body limiting component that is adapted to the first sidewall fixedly disposed on the mold body in the two first sidewalls includes a pressing component, which is detachably pressed against the outer wall surface of the first sidewall along the thickness direction of the mold body.

3. The forming mold for the tote bag as described in claim 2, characterized in that, The gripping component includes multiple suction cups, and a plurality of suction cup mounting holes are formed on the corresponding first sidewall. The plurality of suction cup mounting holes are evenly distributed and penetrate the first sidewall. Each suction cup is respectively disposed in the corresponding suction cup mounting hole, and the edge of the suction nozzle of the suction cup is flush with the outer wall surface of the corresponding first sidewall.

4. The forming mold for the tote bag as described in claim 2, characterized in that, The gripping component includes a clamping member disposed on the top edge of the corresponding first sidewall. When the front of the tote bag is close to the corresponding first sidewall, the clamping member and the first sidewall together clamp the corresponding front of the tote bag.

5. The forming mold for the tote bag as described in claim 2, characterized in that, The pressing component includes a flexible pressing element and a movable seat. The movable seat is movably mounted on the frame along the thickness direction of the mold body. The flexible pressing element is fixedly connected to the movable seat and extends toward the corresponding first side wall. When the front of the tote bag approaches the corresponding first side wall, the movable seat moves along the thickness direction of the mold body and approaches, and the flexible pressing element presses the front of the tote bag and fixes it to the corresponding first side wall.

6. The forming mold for the tote bag as described in claim 1, characterized in that, The molding die also includes two folding opening components respectively disposed at corresponding positions on the two second side walls. When the bag opening folds of the sheet material, which are pre-folded inward at both ends in the length direction, are pressed close to the second side wall, the folding opening components cause the bag opening fold of the side of the two sides of the tote bag that is further away from the second side wall to open. At least one of the two first side walls drives at least one front side of the tote bag and moves at least one of the two sides of the tote bag back and forth relative to the mold body, so that the bag opening fold of the other side of the two sides of the tote bag is inserted into the bag opening fold of the first side.

7. The forming mold for the tote bag as described in claim 6, characterized in that, Both of the folded-edge opening components include air-suction components; wherein... The air-suction component is disposed on the second side wall, corresponding to the bag opening fold position on the side of the corresponding side of the handbag in the height direction of the mold body, and the air intake of the air-suction component is flush with the outer wall surface of the second side wall.

8. The forming mold for the tote bag as described in claim 6, characterized in that, Both of the folded-edge opening components include an air-blowing component; wherein... The air blowing component is provided on the second sidewall, which corresponds to the area below the bag opening fold on the side of the corresponding side of the handbag in the height direction of the mold body, and the air inlet of the air blowing component is flush with the outer wall surface of the second sidewall.

9. The forming mold for the tote bag as described in claim 1, characterized in that, The molding die further includes a guide member disposed between at least one of the two first sidewalls and the die body, and a drive member for moving at least one of the two first sidewalls; wherein... The guide member is fixedly connected to the mold body and located inside the corresponding first sidewall. The guide member extends at a preset angle relative to the height direction of the mold body. The first sidewall is slidably connected to the guide member. The drive member is fixedly connected to the mold body and located on one side of the guide member. The drive end of the drive member is drively connected to the first sidewall. In the height direction of the mold body, the upper end of the guide member is further away from the inner wall of the corresponding first sidewall than the lower end.

10. The forming mold for the tote bag as described in claim 9, characterized in that, The guide member includes multiple guide rails, which are evenly arranged in the plane containing the inner wall surface of the first sidewall, and the length of each guide rail is set as follows: L≥H / cosA; where L is the length of the guide rail; H is the width of the folded edge of the bag opening; A is the preset angle of inclination of the guide rail.

11. The forming mold for the tote bag as described in claim 1, characterized in that, The molding die also includes an adsorption component disposed on the bottom wall, the adsorption component being used to adsorb the bottom surface of the tote bag and make the bottom surface of the tote bag adhere to the outer wall surface of the bottom wall.

12. The forming mold for the tote bag as described in claim 1, characterized in that, The two first sidewalls, the two second sidewalls, and the bottom wall are all configured as planar plate structures; and... At least one of the two first sidewalls is also provided with a vent hole, and the two second sidewalls and the bottom wall are all fixed together with the mold body.

13. The forming mold for a tote bag as described in any one of claims 1 to 12, characterized in that, One of the two first sidewalls is movably connected to the mold body, while the other first sidewall is fixedly integrated with the mold body; wherein, The first sidewall causes one front of the tote bag to move downwards along the height of the mold body and then upwards, so that the bag opening folds of the two sides adjacent to the first front are respectively inserted into the bag opening folds of the two sides adjacent to the other front; or, The first sidewall causes one front of the tote bag to move upward along the height of the mold body and then downward, so that the bag opening folds of the two sides adjacent to the other front are respectively inserted into the bag opening folds of the two sides adjacent to the first front.

14. The forming mold for a tote bag as described in any one of claims 1 to 12, characterized in that, Both first sidewalls are movably connected to the mold body along the length of the mold body; wherein, One of the first sidewalls causes one front of the tote bag to move downward along the height of the mold body and then upward, while the other first sidewall causes one front of the tote bag to move upward along the height of the mold body and then downward, so that the bag opening folds of the two sides adjacent to the one front are respectively inserted into the bag opening folds of the two sides adjacent to the other front.

15. A molding die assembly for a tote bag, characterized in that, Includes a receiving platform, the receiving platform forming a molding area, and a molding mold as described in any one of claims 1 to 14 is disposed above the receiving platform at a position corresponding to the molding area; wherein, The forming mold is movably disposed above the forming area in a vertical direction. When the sheet material is conveyed to the forming area, the forming mold moves from top to bottom so that the two front sides of the tote bag respectively fit against the two first side walls of the forming mold.

16. The molding die assembly for the tote bag as described in claim 15, characterized in that, It also includes a side insert assembly disposed below the receiving platform and movable along the thickness direction of the mold body. When the forming mold moves from top to bottom until the sheet material bends toward the two first side walls of the mold body, the side insert assembly moves toward the mold body to press the opposite sides of the two sides of the tote bag toward the second side wall.

17. The molding die assembly for the tote bag as described in claim 15, characterized in that, It also includes a lifting assembly disposed above the receiving platform, and a connecting plate is fixedly disposed above the mold body, the mold body being connected to the drive end of the lifting assembly through the connecting plate.

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