Forming die of three-dimensional bag

Abstract

The utility model discloses a three-dimensional bag forming die which is used for providing shape support for a bag body in the process that a sheet material is formed into a three-dimensional bag, the forming die comprises a die core body and a pair of pushing and abutting assemblies movably arranged on the two sides of the die core body in the length direction, and dragging assemblies are arranged on the pushing and abutting assemblies. The dragging assembly comprises a grabbing part which can be arranged at the top of the pushing and abutting assembly in a reciprocating motion mode in the height direction; the forming die further comprises an adjusting assembly which extends in the length direction and is arranged on the die core body, the pair of pushing and abutting assemblies are in transmission connection to the two ends of the adjusting assembly respectively, and the adjusting assembly can adjust the relative distance of the pair of pushing and abutting assemblies in the length direction. According to the three-dimensional bag forming mold, automatic inserting forming of bag opening folded edges can be achieved through the grabbing part, the size of the mold can be adjusted through the adjusting assembly, the applicability is higher, and the three-dimensional bag manufacturing efficiency can be improved while the three-dimensional bag yield is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of three-dimensional bag manufacturing, and particularly to a forming mold for a three-dimensional bag. Background Art

[0002] As a portable storage container, the three-dimensional bag has become an indispensable part of our daily life. It is a bag designed with a handle or a shoulder strap for easy carrying by hand or on the shoulder. It is usually made of various materials such as cloth, leather, plastic, paper, etc. For three-dimensional bags of various materials, the structural stability and aesthetics of the three-dimensional bag are crucial factors in its design and manufacturing process. It not only relates to the user experience but also directly affects the practicality and durability of the three-dimensional bag. Therefore, more and more three-dimensional bags are provided with inwardly folded edges at the bag mouth. By setting the folded edges, not only can the structural stability of the three-dimensional bag be enhanced, but also the overall aesthetics of the three-dimensional bag can be improved. And the folded edge at the bag mouth 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 folded edge can disperse the weight and reduce the pressure on the hand skin and muscles, making the user more comfortable.

[0003] In the prior art, when producing a three-dimensional bag with a folded edge at the bag mouth, it usually includes steps such as sheet material cutting, forming treatment, folded edge folding, and folded edge fixing. Especially for materials that are not easily deformed, such as paper bags, if the connection of the folded edge at the bag mouth is fixed by a conventional multi-layer overlapping fixing method, it will not only result in poor flatness at the folded edge of the bag mouth of the three-dimensional bag, affecting the aesthetics, but also greatly weaken the structural strengthening performance of the folded edge at the bag mouth on the three-dimensional bag. In this regard, in the prior art, when producing a three-dimensional bag made of materials that are not easily deformed, after the bag body of the three-dimensional bag is formed, the folded edge treatment at the bag mouth is carried out by using corresponding equipment, which includes multiple processes such as folded edge outward turning, gluing, and inward folding. During the process, not only are there many processes, but also for different bag types, the mold needs to be replaced. This will result in low production efficiency of the three-dimensional bag, a high probability of being torn and damaged during multiple foldings of the folded edge, and a low yield of the produced three-dimensional bag.

[0004] Therefore, there are problems of low efficiency and low yield in the prior art when producing a three-dimensional bag with a folded edge at the bag mouth. Summary of the Utility Model

[0005] The purpose of this application is to solve the above-mentioned defects existing in the prior art when producing a three-dimensional bag with a folded edge at the bag mouth, and is committed to providing a forming mold that can be used for the production of a three-dimensional bag with a folded edge at the bag mouth.

[0006] To this end, the present application provides a forming mold for a three-dimensional bag, which is used to provide shape support for the bag body during the process of forming a sheet into a three-dimensional bag. The three-dimensional bag includes a bottom surface, two front surfaces arranged opposite to each other in the width direction of the bottom surface, and two side surfaces arranged opposite to each other in the length direction of the bottom surface; wherein, at least one of the two side surfaces includes an inserting surface and an inserted surface, and the inserting surface and the inserted surface are overlapped with each other at least at the ends opposite to each other, and the tops of the inserting surface and the inserted surface and the bag opening folds corresponding to the overlapping parts are inserted with each other; the forming mold includes a core body, and a pair of pushing and abutting components movably arranged on both sides of the core body in the length direction. During the forming process of the three-dimensional bag, each pushing and abutting component pushes and supports the front surface, side surface, and bottom surface of the corresponding side of the three-dimensional bag.

[0007] In a pair of pushing and abutting components, a dragging component is arranged on the pushing and abutting components corresponding to the side surface including the plug-in surface, and the dragging component includes a grabbing portion which is arranged on the top of the pushing and abutting components and can be reciprocated along the height direction; and, during the forming process of the three-dimensional bag, the grabbing portion grabs and drags the bag opening folded edge at the top of the plug-in surface on the corresponding side to reciprocate in the height direction relative to the bag opening folded edge at the top of the plug-in surface, and then plugs into the bag opening folded edge of the plug-in surface.

[0008] The molding die also includes an adjusting component which is extended along the length direction and arranged on the mold core body. A pair of push components are respectively connected to the two ends of the adjusting component by transmission. The adjusting component can adjust the relative distance between the pair of push components in the length direction.

[0009] By adopting the above technical solution, the mold structure provided by the present application can realize the automatic plug-in forming of the bag mouth folding edge. Among them, the mold core body and the two side push-pull components constitute the main support frame, which performs three-dimensional positioning support on each surface during the bag body forming to ensure the precise forming of the bag body shape. The dragging component reciprocates in the vertical direction on the plug-in surface folding edge through the grabbing part, so that the folding edge forms an accurate plug-in track, replacing the traditional manual folding process to avoid repeated bending of the material and causing damage; and the adjustment component can adjust the spacing between the two side push-pull components, so as to adapt to the production of three-dimensional bags of different length specifications, solving the problem of low mold change efficiency caused by the fixed size of traditional molds.

[0010] Therefore, the molding mold provided in the present application can not only realize the automatic insertion and molding of the bag mouth folding edge by using the grabbing part, but also can adjust the size of the mold by setting an adjustment component, thereby improving the production efficiency of the three-dimensional bag while ensuring the finished product rate of the three-dimensional bag.

[0011] According to the forming die of the three-dimensional bag provided by the present application, the dragging component includes a clamping component as a grasping part. The clamping component is arranged at the top of the pushing component so as to be reciprocally movable in the height direction, and the end part can be clamped and protrudes out of the outer edge of the pushing component; wherein, during the forming process of the three-dimensional bag, the end part of the clamping component clamps and drags the bag mouth hem at the top of the plug-in surface on the corresponding side to reciprocally move in the height direction and then be plugged with the bag mouth hem of the surface to be plugged.

[0012] By adopting the above technical solution, by arranging a movable clamping component at the top of the pushing component, accurate grasping and position adjustment of the bag mouth hem of the plug-in surface are realized. The characteristic that the clamping component can reciprocally move in the height direction enables the movement track of the hem to be actively controlled during the forming process, avoiding material pulling damage caused by traditional multi-process folding. The end part of the clamping component protrudes out of the outer edge of the pushing component, can directly contact and clamp the edge of the hem, ensuring that the hem remains stable during the movement and preventing deviation or falling off.

[0013] Moreover, by setting the grasping part as a clamping component, the clamping component can also clamp the bag mouth hem on the plug-in surface. Even if the bag mouth hem on the plug-in surface is not pre-pasted, the clamping component can still clamp the bag mouth hem on the plug-in surface, enabling the bag mouth hem on the plug-in surface to merely fit with the plug-in surface, so that when the bag mouth hem on the plug-in surface is inserted into the bag mouth hem of the surface to be plugged, it can be more smooth, thereby enabling the accuracy rate to be higher during the plugging process of the bag mouth hem of the three-dimensional bag.

[0014] According to the forming die of the three-dimensional bag provided by the present application, the dragging component further includes a moving air cylinder for driving the clamping component to reciprocally move in the height direction and a clamping air cylinder for driving the clamping component to clamp; a clamping groove extending in the height direction is formed on the corresponding side wall of the pushing component, and the end part of the clamping component protrudes out from the clamping groove.

[0015] By adopting the above technical solution, the automatic plugging of the bag mouth hem is realized through the mechanical structure of air cylinder driving and cooperation with the clamping groove. The moving air cylinder provides reciprocating power for the clamping component in the height direction, enabling the clamping component to accurately grasp the bag mouth hem of the plug-in surface and then execute vertical displacement, thus replacing the traditional manual folding operation. The clamping air cylinder specifically controls the opening and closing of the clamping action, ensuring that the hem is always reliably clamped during the dragging process and avoiding the hem falling off or deviating due to insufficient clamping force. The longitudinal clamping groove arranged on the side wall of the pushing component on the one hand provides a guiding path for the telescopic movement of the clamping component, restricting its movement only within the set track; on the other hand, through the wrapping and support of the edge of the groove body on the clamping component, it avoids interference between the clamping component and the sheet material when not in use.

[0016] According to the forming die of the three-dimensional bag provided by the present application, the pushing component includes a moving plate that is reciprocally movable along the height direction on one side of the core body and faces the front of the corresponding side of the three-dimensional bag; the dragging component includes a clamping member as a grasping part, and the clamping member is arranged on the top of the moving plate, and the end part thereof can be clamped and protruded out of the outer edge of the pushing component; during the forming process of the three-dimensional bag, the moving plate reciprocally moves along the height direction relative to the core body, drives the end part of the clamping member to clamp the bag mouth hem at the top of the corresponding side's insertion surface, and then drags the corresponding bag mouth hem to reciprocally move in the height direction.

[0017] With the above technical solution, by integrally designing the moving plate and the clamping member, the automatic clamping and positioning of the bag mouth hem are realized. When the moving plate reciprocally moves along the height direction, the clamping member on its top moves synchronously, directly grasping the bag mouth hem at the top of the insertion surface. The moving plate can not only drive the hem to perform precise up and down reciprocating movements, but also support the front surface of the bag body that follows the insertion surface, effectively avoiding the risk of local pulling and tearing of the bag body. The structure that the end part of the clamping member protrudes out of the outer edge of the pushing component can ensure that the edge of the hem can be accurately contacted during the clamping process, avoiding insertion misalignment or hem tearing caused by position deviation.

[0018] According to the forming die of the three-dimensional bag provided by the present application, a guiding member is arranged between the moving plate and the core body; when viewed along the length direction, the guiding member extends along the height direction and gradually moves away from the inner side wall surface of the moving plate from top to bottom relative to the height direction, and the moving plate is translatably arranged on one side of the core body through the guiding member.

[0019] With the above technical solution, by setting a guiding member with a specific spatial orientation, that is, an inclined structure in which the guiding member gradually moves away from the inner side wall surface of the moving plate from top to bottom, a horizontal translation displacement is synchronously generated during the vertical lifting process of the moving plate. Specifically, during the up and down movement of the moving plate, for example, when the moving plate moves upward, the moving plate will gradually move away from the core body along the guiding member and generate a displacement outward, and when the moving plate moves downward, the moving plate will gradually move away from the core body along the guiding member and generate a displacement inward. When the side sheet where the insertion surface is located is dragged downward, the bottom surface of the bag body will be inclined, and at this time, the dimension of the bag body in the width direction will become narrower. Through this design of the present application, the moving plate can not only support the dragged part of the bag body, but also translate in the width direction when moving, so that when the bag body is inclined, the die will also be inclined and become narrower in the width direction, which can not only effectively support the bag shape, but also reduce the risk of the bag body being broken by the die when it is inclined.

[0020] According to the forming mold of the three-dimensional bag provided by the present application, the guiding member is a guide rail arranged on the side of the core body, and the inner wall surface of the movable plate is provided with a guiding member adapted to the guide rail; in the width direction, the edge of the movable plate and the side plate of the pushing assembly have a clamping gap, and the end of the clamping member extends out from the clamping gap.

[0021] By adopting the above technical solution, the guide member is specifically designed as a guide rail on the side of the core body, and a corresponding guide is arranged on the inner side of the moving plate, so that the moving plate can move stably along the fixed track. At the same time, a clamping interval is arranged in the width direction, which not only ensures the support strength of the push-pull assembly to the bag body, but also avoids collision with the side plate during the clamping action, taking into account the movement accuracy of the moving plate and the working space of the clamping component, and improving its operational reliability while ensuring the stability of the mold operation.

[0022] According to the forming mold of the three-dimensional bag provided in the present application, the pushing assembly also includes a plate driving component for driving the movable plate to move in the height direction, and a plate transmission component arranged between the plate driving component and the movable plate; the plate driving component is fixedly arranged on the top of the pushing assembly, the power input end of the plate transmission component is transmission-connected to the power output end of the plate driving component, the power output end of the plate transmission component is transmission-connected to the inner wall surface of the movable plate, and the plate driving component drives the movable plate to reciprocate in the height direction through the plate transmission component.

[0023] By adopting the above technical solution, the plate driving component is fixed to the top of the push assembly, so that the plate driving component and the side plate can be prevented from interfering when the mold is adjusted. The plate driving component and the moving plate are connected by the plate transmission component, and the inner wall surface of the moving plate is used as the connection point of the power output end, which can evenly distribute the driving force to the whole moving plate, ensuring that it maintains the relative position stability with the mold core body during the up and down movement, so as to accurately control the lifting stroke of the clamping component during the bag mouth folding and plugging process, and avoid the folding dislocation or damage caused by the displacement of the moving plate.

[0024] According to the forming mold of the three-dimensional bag provided by the present application, the plate transmission component includes a pushing rod, the lower end of the pushing rod is fixedly connected to the inner wall surface of the movable plate, and the upper end is formed with a movable groove extending along the width direction, and the output shaft of the plate driving component can be relatively movably arranged in the movable groove; a sliding block extending toward the core body and sleeved on the guide rail is provided in the middle part of the pushing rod, and the plate driving component drives the pushing rod to move up and down, and links the movable plate to reciprocate along the guide rail, and the output shaft of the plate driving component moves back and forth in the movable groove.

[0025] By adopting the above technical solution, the lower end of the push rod is connected to the moving plate, and the upper end is provided with a floating connection structure with a moving groove, so that the output shaft of the plate driving component can slide horizontally in the moving groove. This design allows the push rod to automatically adjust the lateral displacement according to the inclination angle of the guide rail during the up and down movement, avoiding the jamming phenomenon caused by the rigid connection structure when moving on the inclined guide rail.

[0026] In addition, the slider disposed in the middle of the push rod is sleeved on the guide rail, which not only constrains the moving track of the moving plate through the guide rail, but also absorbs the movement deviation through the floating connection of the push rod. The reciprocating movement of the output shaft of the plate driving component in the moving groove forms dynamic compensation, so that the moving plate can always slide smoothly along the inclined path preset by the guide rail, ensuring the positioning accuracy of the pocket fold of the plug-in surface when it moves in the height direction.

[0027] According to the forming mold of the three-dimensional bag provided by the present application, the dragging assembly also includes a clamping driving component arranged on the top of the movable plate, the clamping component includes a fixed jaw and a rotating jaw, the fixed jaw is fixedly connected to the inner wall surface of the movable plate, and the fixed jaw has a clamping surface facing the outside of the movable plate and aligned with the outer edge of the movable plate, the rotating jaw can be rotatably arranged on the fixed jaw relative to the fixed jaw, the power output end of the clamping driving component is transmission-connected to the rotating jaw, and drives the rotating jaw to rotate relative to the fixed jaw.

[0028] By adopting the above technical solution, the fixed clamp is fixedly connected to the inner wall of the movable plate, and its clamping surface is aligned with the outer edge of the movable plate, ensuring that the pocket folded edge of the plug-in surface remains aligned when being grasped, thereby avoiding plug-in failure or folded edge deformation due to position offset.

[0029] According to the forming mold of the three-dimensional bag provided in the present application, the dragging assembly also includes a clamping transmission component arranged between the clamping drive component and the rotating clamp; the clamping transmission component is movably connected to the inner wall surface of the movable plate along the height direction of the movable plate, the power input end of the clamping transmission component is transmission-connected to the clamping drive component, and the power output end of the clamping transmission component is transmission-connected to the rotating clamp, and the clamping drive component rotates relative to the fixed clamp through the clamping transmission component.

[0030] By adopting the above technical solution, the design of the clamping transmission component being movable and connected in the height direction allows the movable plate to move with the dragging component when it is lifted and lowered, and can also ensure the rotation angle control of the rotating clamp. The clamping transmission component is driven by the clamping drive component, which in turn drives the rotating clamp to rotate relative to the fixed clamp. This split transmission structure can meet the position change requirements at different stages of the mold forming process while ensuring the clamping force.

[0031] According to the forming mold of the three-dimensional bag provided in the present application, the clamping transmission component includes a rack slidably connected to the inner wall surface of the moving plate along the height direction of the moving plate, the rotating jaw has an engaging portion adapted to the rack, the engaging portion teeth of the rotating jaw are engaged with the rack, and the upper end of the rack is transmission-connected to the power output end of the clamping drive component, and the clamping drive component drives the rack to move up and down to link the rotating jaw to rotate relative to the fixed jaw.

[0032] With the above technical solution, the clamping transmission component converts the linear motion of the clamping drive component into the rotational motion of the rotating jaw through the meshing relationship between the rack and the rotating jaw. When the clamping drive component is started, the rack slides up and down along the inner wall of the moving plate, and its tooth surface is in continuous contact with the meshing part of the rotating jaw, so that the rotating jaw rotates around the fulcrum of the fixed jaw.

[0033] In addition, when the movable plate moves in the height direction, the rigid transmission of the rack avoids the clamping deviation caused by the gap in the traditional connecting rod mechanism, ensuring that the clamping force is evenly distributed.

[0034] In addition, since scales can be formed on the rack over the entire height, when the height of the clamping component needs to be adjusted for bags of different heights, only the positions of the two jaws need to be adjusted. At this time, the rotating jaws can still engage with the rack, and there is no need to adjust the clamping transmission component and the clamping drive component. The operation is simpler and is conducive to improving production efficiency.

[0035] According to the forming mold of the three-dimensional bag provided in the present application, the adjustment component includes a telescopic component extending along the length direction and arranged on the core body, and a telescopic adjustment component arranged on one side of the telescopic component; two push-against components are respectively connected to the two ends of the telescopic component, and the telescopic adjustment component is transmission-connected with the telescopic component to drive the telescopic adjustment component and the linkage telescopic component to telescope along the length direction relative to the core body to adjust the relative distance between a pair of push-against components in the length direction.

[0036] The above technical solution can quickly adapt to the production needs of three-dimensional bags of different specifications on the same mold by integrating a retractable adjustment mechanism. The mechanical synchronous adjustment of the spacing between the push-pull components avoids the operational errors caused by repeated manual adjustments, and effectively improves the accuracy of the bag body molding dimensions. This design greatly reduces the frequency of mold replacement, shortens production preparation time, enables the production line to quickly switch between different product models, and overall improves production efficiency and equipment utilization.

[0037] According to the forming die of the three-dimensional bag provided by the present application, the telescopic component includes at least one threaded telescopic rod, and the threaded telescopic rod includes an outer cylinder and two movable shafts arranged at both ends of the outer cylinder; an external thread is formed at one end of each movable shaft and is sleeved in a matching manner with the internal thread on the inner circumference of the corresponding end of the outer cylinder; moreover, the ends of the two movable shafts respectively have external threads with opposite helix directions, and internal threads adapted to the external threads of the two movable shafts are respectively formed on the inner circumferences of both ends of the outer cylinder, and one side ends of the threads of the two movable shafts are respectively threadedly adapted to the corresponding ends on both sides of the outer cylinder; and the other end of each movable shaft is fixedly connected to the side plate of the corresponding pushing component on one side.

[0038] Adopting the above technical solution, the present application realizes stepless adjustment through a screw drive mechanism. During operation, only by rotating the outer cylinder can the symmetrical adjustment of the distance between the two pushing components be completed without disassembling any components. Moreover, the mechanical self-locking characteristic of the screw pair avoids the pressure relief risk existing in traditional hydraulic or pneumatic adjustment, and can ensure the stability of the supporting force during the forming process.

[0039] According to the forming die of the three-dimensional bag provided by the present application, the telescopic component includes a plurality of threaded telescopic rods distributed at intervals along the height direction; the telescopic adjustment component includes an adjustment part and an intermediate transmission part arranged between the adjustment part and the plurality of threaded telescopic rods; wherein, by adjusting the adjustment part, the intermediate transmission part is driven to synchronously adjust the plurality of threaded telescopic rods.

[0040] Adopting the above technical solution, the present application utilizes the synchronous adjustment of a plurality of threaded telescopic rods, which can avoid structural deformation caused by uneven single-point stress, thereby ensuring the stability of the adjustment of the distance between the pushing components.

[0041] In addition, through the cooperation of the transmission chain and the meshing teeth, the mechanical structure of multi-rod linkage can be simplified, thereby improving the adjustment efficiency.

[0042] According to the forming die of the three-dimensional bag provided by the present application, the adjustment part of the telescopic adjustment component includes an adjustment shaft extending along a direction perpendicular to the width direction and rotatably arranged on the die core body, and the adjustment shaft is in transmission connection with the outer cylinder of the uppermost threaded telescopic rod in the height direction. Among them, a first spiral tooth is formed on the outer wall surface of the adjustment shaft, and a second spiral tooth meshing with the first spiral tooth is formed on the outer wall surface of the outer cylinder of the uppermost threaded telescopic rod; the intermediate transmission part includes meshing teeth formed on the outer wall surfaces of the outer cylinders of each threaded telescopic rod and a transmission chain extending along the height direction and respectively meshing with the meshing teeth on the outer wall surfaces of the outer cylinders of each threaded telescopic rod; a rotation driving structure extending out of the die core body is formed at one end of the adjustment shaft. By driving the rotation driving structure, the adjustment shaft is driven to rotate and drives the outer cylinders of the plurality of threaded telescopic rods to rotate, so that a pair of pushing components move away from or close to each other along the length direction.

[0043] With the above technical solution, when the operator rotates the driving structure, the adjusting shaft drives the first spiral tooth to rotate, and the outermost cylinder at the top is driven to rotate synchronously through the worm and worm gear. Since the outer cylinders are linked through the transmission chain, the outer cylinders of all the threaded telescopic rods rotate synchronously. The helix directions of the internal threads in the outer cylinders and the external threads on the movable shafts match, so that when the outer cylinders rotate, the movable shafts on both sides are pushed to move in equal speed and opposite directions along the length direction.

[0044] In addition, the worm and worm gear structure will form self-locking while transmitting power, and the stability of the pushing component after adjustment can be maintained without additional positioning devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 Schematic perspective view of the three-dimensional structure of the three-dimensional bag provided by the embodiment of the present application;

[0046] Figure 2 Schematic perspective view of the three-dimensional structure of the bag mouth hem of the three-dimensional bag provided by the embodiment of the present application during the insertion process;

[0047] Figure 3 Partially enlarged schematic perspective view of the bag mouth hem of the three-dimensional bag provided by the embodiment of the present application during the insertion process;

[0048] Figure 4 Front view structural schematic diagram of the forming die of the three-dimensional bag provided by the embodiment of the present application;

[0049] Figure 5 Schematic perspective view of one perspective of the forming die of the three-dimensional bag provided by the embodiment of the present application;

[0050] Figure 6 Schematic perspective view of another perspective of the forming die of the three-dimensional bag provided by the embodiment of the present application;

[0051] Figure 7 Schematic perspective view of the forming die of the three-dimensional bag provided by the embodiment of the present application with the moving plate and the die core body removed;

[0052] Figure 8 Schematic perspective view of the pushing component in the forming die of the three-dimensional bag provided by the embodiment of the present application;

[0053] Figure 9 Schematic perspective view of the push rod in the forming die of the three-dimensional bag provided by the embodiment of the present application;

[0054] Figure 10 Schematic perspective view of the adjusting component in the forming die of the three-dimensional bag provided by the embodiment of the present application;

[0055] Figure 11 Schematic perspective view of the dragging component in the forming die of the three-dimensional bag provided by the embodiment of the present application.

[0056] Explanation of reference numerals:

[0057] 10, three-dimensional bag; 101, front side; 102, side; 1021, insertion surface; 1022, surface to be inserted; 103, bottom surface; 104, bag mouth hem; 201, length direction; 202, width direction; 203, height direction;

[0058] 100, forming die;

[0059] 110, core body;

[0060] 120, pushing component;

[0061] 121, moving plate; 122, side plate; 123, bottom wall; 124, fixing plate; 125, guiding component; 1251, guide rail; 1252, guiding piece; 126, clamping groove; 127, plate driving component; 128, plate transmission component; 1281, pushing rod; 12811, moving groove;

[0062] 130, dragging component;

[0063] 131, grasping part; 1311, fixed jaw; 1312, rotating jaw; 13121, meshing part; 132, clamping driving component; 133, clamping transmission component; 1331, rack;

[0064] 140, adjusting component;

[0065] 141, telescopic component; 1411, threaded telescopic rod; 142, telescopic adjusting component; 1421, adjusting part; 1422, intermediate transmission part. Detailed implementation manners

[0066] In the prior art, when producing a three-dimensional bag with a bag mouth hem, a process of multiple folding and gluing is usually adopted. The structure of the traditional die is fixed. For three-dimensional bags of different specifications, the die needs to be repeatedly replaced during the process, resulting in complex processes and low die change efficiency. In addition, the bag mouth hem is prone to material tearing during multiple bending processes, resulting in a decrease in the finished product rate.

[0067] To solve the above problems, the present application provides a die that can automatically complete the insertion molding of the bag mouth hem and adapt to multi-specification bag bodies. Specifically, an adjustable support structure and a dragging component are introduced at the same time to realize the self-adaptive adjustment of the die width, and frequent die replacement can be avoided. During the forming process of the three-dimensional bag, the grasping part of the dragging component can grasp and drag the bag mouth hem at the top of the insertion surface of the three-dimensional bag to reciprocate in the height direction relative to the bag mouth hem at the top of the surface to be inserted, and then be inserted into the bag mouth hem of the surface to be inserted. By adopting this die for the forming equipment of the three-dimensional bag, the production efficiency and the finished product rate of three-dimensional bags with bag mouth hems of different specifications can be improved.

[0068] To more clearly introduce the solution of this application, the following provides an illustrative example with reference to the accompanying drawings.

[0069] This application provides a forming die for a three-dimensional bag, which provides shape support for the bag body during the process of forming a sheet material into a three-dimensional bag.

[0070] First, to better understand the forming die 100, this application introduces the three-dimensional bag. Please refer to Figures 1 to 3 , the three-dimensional bag 10 includes a bottom surface 103, two front surfaces 101 oppositely arranged in the width direction 202 of the bottom surface 103, and two side surfaces 102 oppositely arranged in the length direction 201 of the bottom surface 103; wherein, at least one of the two side surfaces 102 includes a plug-in surface 1021 and a surface to be plugged 1022, and at least the opposite ends of the plug-in surface 1021 and the surface to be plugged 1022 overlap each other, and the bag mouth hem 104 at the top of the plug-in surface 1021 and the surface to be plugged 1022 at the corresponding position of the overlapping part are plugged into each other.

[0071] It should be understood that regarding the setting of the plug-in surface 1021 and the surface to be plugged 1022, for the three-dimensional bag 10 with only one side surface 102 having a connection seam, one of the two side surfaces 102 may include the plug-in surface 1021 and the surface to be plugged 1022. For the three-dimensional bag 10 with both side surfaces 102 having connection seams, one of the two side surfaces 102 may include the plug-in surface 1021 and the surface to be plugged 1022.

[0072] The side surface 102 of the three-dimensional bag 10 refers to the side wall surfaces standing upright on both sides of the length direction 201 of the bottom surface 103, and the front surface 101 of the three-dimensional bag 10 refers to the side wall surfaces standing upright on both sides of the width direction 202 of the bottom surface 103.

[0073] The following introduces the structure and working principle of the forming die:

[0074] Please refer to Figures 4 to 6The molding die 100 includes a core body 110 and a pair of push-pull components 120 movably disposed on both sides of the core body 110 in the length direction 201. During the molding process of the three-dimensional bag 10, each push-pull component 120 pushes and supports the front surface 101, the side surface 102, and the bottom surface 103 of the corresponding side of the three-dimensional bag 10; among the pair of push-pull components 120, the push-pull component 120 corresponding to the side surface 102 including the plug-in surface 1021 is provided with a drag component 130, and the drag component 130 includes a grabbing portion 131 reciprocally disposed on the top of the push-pull component 120 along the height direction 203. During the forming process of the three-dimensional bag 10, the grasping portion 131 grasps and drags the bag opening fold 104 at the top of the plug-in surface 1021 on the corresponding side, moves back and forth in the height direction 203 relative to the bag opening fold 104 at the top of the plug-in surface 1022, and then plugs into the bag opening fold 104 of the plug-in surface 1022; the molding mold 100 also includes an adjusting component 140 extending along the length direction 201 on the core body 110, and a pair of push components 120 are respectively connected to the two ends of the adjusting component 140 by transmission, and the adjusting component 140 can adjust the relative distance between the pair of push components 120 in the length direction 201.

[0075] Specifically, in the present application, the core body 110 refers to a rigid component constituting the main support structure of the mold, which can be specifically formed by casting of metal material, and its surface shape matches the inner cavity contour of the three-dimensional bag 10, and is used to provide a molding reference surface for the sheet material during the molding process. The push assembly 120 refers to a movable support structure arranged on both sides of the core body 110, which can be specifically connected to the core body 110 through a movable connection structure such as a guide rail 1251 mechanism, and its working surface matches the shape of the bag body side 102, and pushes the sheet material outward to form the bag body contour during molding.

[0076] The dragging component 130 may refer to a gripping mechanism such as a suction cup or a clamping claw integrated on the top of the pushing component 120. When the gripping portion 131 is set as a clamping claw, it can be implemented by using a pneumatic clamping claw in conjunction with a lifting cylinder to accurately grasp and vertically move the bag folding edge 104 to complete the plug-in action. The adjusting component 140 refers to a telescopic mechanism for controlling the spacing of the pushing component 120, which can be implemented by a combination of a bidirectional screw and a gear transmission system, and the pushing components 120 on both sides are driven to move synchronously in the opposite direction by rotating the adjusting shaft.

[0077] When in use, first operate the adjustment component 140 to adjust the distance between the pair of push components 120 to match the specifications of the bag to be made. During the molding process of the bag side 102, when the sheet is wrapped on the surface of the core body 110, the gripping portion 131 on the top of the push component 120 with the plugging surface 1021 grabs the edge of the bag mouth fold 104 and moves downward, and then accurately lifts it to a predetermined height in the vertical direction, so that the bag mouth fold 104 of the plugging surface 1021 is plugged into the bag mouth fold 104 of the plugged surface 1022, and they are plugged into each other.

[0078] Compared with the prior art, the traditional mold needs to set up a separate folding processing station and complete the folding molding through multiple processes, while the present solution integrates the folding plug-in function inside the molding mold 100, and completes the folding processing simultaneously during the bag molding stage. The fixed structure of the traditional mold requires the mold to be replaced according to the size of the bag body, while the present solution realizes the online adjustment of the mold size through the adjustment component 140, which significantly shortens the mold change time. In the traditional process, folding requires multiple bendings, which is easy to damage the material. The present solution reduces the material stress through a one-time plug-in action in the vertical direction.

[0079] Through the above technical solution, the present application not only realizes the integration of the bag opening folding 104 forming process and the bag body forming process, but also eliminates the folding and turning station in the traditional process, thus shortening the production process. Moreover, through the cooperation of the adjustment component 140 and the push component 120, a single mold can be adapted to the production of bags of various specifications, thus reducing the frequency of mold replacement.

[0080] Furthermore, the vertical hem plugging method of the present invention avoids repeated bending of the material and effectively reduces the hem breakage rate. The three-dimensional support structure of the push-button assembly 120 ensures the molding accuracy of the bag body and enables the plugged hem to be accurately aligned.

[0081] Therefore, the forming mold 100 provided by the present application can improve the production efficiency of the three-dimensional bag 10 while improving the yield rate of the three-dimensional bag 10. When applied to the production equipment of the three-dimensional bag 10, the production efficiency of the production equipment can be greatly improved. In particular, compared with the traditional production equipment, the forming mold 100 provided by the present application can realize the production of three-dimensional bags 10 with bag opening folding edges 104 of various specifications in a shorter time, thereby meeting more production needs.

[0082] Further, in the forming mold 100 of the three-dimensional bag provided in the present application, see Figure 2 , Figure 3 and Figure 7, the dragging component 130 includes a clamping member as the grasping portion 131. The clamping member is reciprocally movable in the height direction 203 and is disposed on the top of the pushing component 120. The end portion thereof extends out of the outer edge of the pushing component 120 in a clampable manner. During the forming process of the three-dimensional bag 10, the end portion of the clamping member clamps and drags the bag mouth hem 104 at the top of the plug-in surface 1021 on the corresponding side to reciprocally move in the height direction 203 and then be plugged with the bag mouth hem 104 of the plugged surface 1022.

[0083] Among them, the clamping member refers to an execution unit that can mechanically clamp the bag mouth hem 104. Specifically, it can be implemented by a mechanical structure with movable jaws. For example, it can be a clamping mechanism driven by pneumatic or electric power. The clamping surface of the clamping member can be designed as a flat surface or a contact surface with anti-slip patterns, which can achieve stable grasping without damaging the material surface.

[0084] Specifically, when the sheet material is initially formed into a bag structure on the mold, the pushing component 120 forms a support for the front surface 101, side surface 102, and bottom surface 103 of the bag. The clamping member clamps and fixes the bag mouth hem 104 at the top of the plug-in surface 1021. After the clamping member moves downward, it immediately moves upward in the height direction 203, driving the bag mouth hem 104 to be synchronously lifted to the plugging position corresponding to the hem of the plugged surface 1022. After the plugging is completed, the clamping member releases the hem and resets. The bag mouth hem 104 of the plugged surface 1022 and the bag mouth hem 104 of the plug-in surface 1021 can be sealed and fixed by pressing through a pressing mechanism.

[0085] It should be understood that the connection between the bag mouth hem 104 of the plugged surface 1022 and the bag mouth hem 104 of the plug-in surface 1021 can be pre-coated with glue. After the plugging is completed, the bag mouth hem 104 of the plugged surface 1022 and the bag mouth hem 104 of the plug-in surface 1021 can be adhesively fixed by pressing through a pressing mechanism.

[0086] Of course, for heat-sealable materials, such as non-woven fabrics, after the plugging is completed, the bag mouth hem 104 of the plugged surface 1022 and the bag mouth hem 104 of the plug-in surface 1021 can be heat-sealed and fixed by an ultrasonic heat-sealing mechanism.

[0087] Through the above technical solution, by providing a movable clamping member on the top of the pushing component 120, accurate grasping and position adjustment of the bag mouth hem 104 of the plug-in surface 1021 are achieved. The characteristic that the clamping member can reciprocally move in the height direction 203 enables the active control of the movement trajectory of the hem during the forming process, avoiding material pulling and damage caused by traditional multi-process folding. The end portion of the clamping member extends out of the outer edge of the pushing component 120, and can directly contact and clamp the edge of the hem, ensuring the stability of the hem during movement and preventing deviation or detachment.

[0088] Further, in the present application, by setting the grasping portion 131 as a clamping member, the clamping member can also clamp the bag mouth hem 104 on the insertion surface 1021. Even if the bag mouth hem 104 on the insertion surface 1021 is not pre-pasted, the clamping member can still clamp the bag mouth hem 104 on the insertion surface 1021, so that the bag mouth hem 104 on the insertion surface 1021 can be merely attached to the insertion surface 1021. This can make the insertion of the bag mouth hem 104 on the insertion surface 1021 into the bag mouth hem 104 on the insertion surface 1022 smoother, and thus the accuracy of the three-dimensional bag 10 during the insertion process of the bag mouth hem 104 can be higher.

[0089] Further, in the forming die 100 of the three-dimensional bag provided in the present application, please refer to Figures 4 to 6 , the dragging assembly 130 of the die includes a moving cylinder for driving the clamping member to reciprocate in the height direction 203 and a clamping cylinder for driving the clamping member to clamp. A clamping groove 126 extending in the height direction 203 is formed on the corresponding side wall of the pushing assembly 120, and the end of the clamping member extends out of the clamping groove 126.

[0090] Specifically, the moving cylinder is an actuator that drives the clamping member to move in the vertical direction through gas pressure. Specifically, a piston-type cylinder can be used. Its cylinder body can be fixed inside the pushing assembly 120, and the output shaft is connected to the clamping member to provide linear reciprocating power for the clamping member. Among them, the clamping cylinder is an actuator that controls the clamping action of the clamping member through gas pressure. Specifically, a double-acting cylinder can be used. Its cylinder body can be fixed inside the clamping member, and the output shaft is connected to the claw to control the opening and closing of the claw to grasp or release the hem. Among them, the clamping groove 126 is a longitudinal channel formed on the side wall of the pushing assembly 120. Specifically, a rectangular cross-section groove structure can be used. Its inner wall surface is slidably matched with the clamping member for the clamping member to move.

[0091] Specifically, the clamping member moves along the vertical path defined by the clamping groove 126 under the drive of the moving cylinder. During use, the clamping cylinder drives the claw to close to grasp the bag mouth hem 104 at the top of the insertion surface 1021. Subsequently, the moving cylinder drives the clamping member to move up and down. For example, it first drives the insertion surface 1021 to move downward and then reset. At this time, the dragging hem is displaced vertically to the insertion position corresponding to the hem of the insertion surface 1022, and the clamping cylinder controls the claw to release to complete the insertion.

[0092] Through the above technical solution, the automatic insertion of the bag mouth hem 104 is realized by the mechanical structure driven by the air cylinder and cooperating with the clamping groove 126. The moving air cylinder provides reciprocating power for the clamping component along the height direction 203, so that the clamping component can accurately grasp the bag mouth hem 104 on the insertion surface 1021 and then perform a vertical displacement, thus replacing the traditional manual folding operation. The clamping air cylinder specifically controls the opening and closing of the clamping action to ensure that the hem is always reliably clamped during the dragging process, avoiding the hem falling off or shifting due to insufficient clamping force. The longitudinal clamping groove 126 provided on the side wall of the pushing component 120, on the one hand, provides a guiding path for the telescopic movement of the clamping component, restricting it to move only within the set track; on the other hand, through the wrapping support of the edge of the groove body for the clamping component, it avoids the interference between the clamping component and the sheet material when not in use.

[0093] Furthermore, in the forming die 100 provided in the present application, please refer to Figure 2 , Figures 4 to 6 , the pushing component 120 includes a moving plate 121 that is reciprocally movable along the height direction 203 on one side of the die core body 110 and is opposite to the front surface 101 of the corresponding side of the three-dimensional bag 10; the dragging component 130 includes a clamping component as the grasping part 131, and the clamping component is arranged on the top of the moving plate 121, and the end part can be clamped and extended out of the outer edge of the pushing component 120; during the forming process of the three-dimensional bag 10, the moving plate 121 reciprocally moves along the height direction 203 relative to the die core body 110, drives the end part of the clamping component to clamp the bag mouth hem 104 at the top of the insertion surface 1021 of the corresponding side, and then drags the corresponding bag mouth hem 104 to reciprocally move in the height direction 203.

[0094] Specifically, the moving plate 121 refers to a supporting structure arranged opposite to the front surface 101 of the three-dimensional bag 10. Specifically, a metal plate can be used in cooperation with a linear guide rail 1251 to achieve vertical movement, and its displacement along the height direction 203 can adjust the insertion stroke of the bag mouth hem 104.

[0095] Furthermore, please refer to Figures 4 to 6, the pushing component 120 may further include side plates 122 and a bottom wall 123. The bottom wall 123 is adapted to the bottom surface 103 of the three-dimensional bag 10 and is used to support the bottom surface 103 of the three-dimensional bag 10. The side plates 122 are adapted to the side surfaces 102 of the three-dimensional bag 10 and are used to support the side surfaces 102 of the three-dimensional bag 10. The moving plate 121 is movably arranged on one side of the bottom wall 123 along the width direction 202 in the height direction 203 and is used to support one front surface 101 of the three-dimensional bag 10, and this front surface 101 may be the front surface 101 connected to the plugging surface 1021 of the side surface 102; on the opposite side of the moving plate 121, a fixing plate 124 standing on the bottom wall 123 is further provided, and the fixing plate 124 is used to support the other front surface 101 of the three-dimensional bag 10, and the other front surface 101 refers to the front surface 101 connected to the plugged surface 1022 of the side surface 102.

[0096] Specifically, the moving plate 121 is arranged on the die core body 110 and can be slidably connected to the side plates 122 and move up and down in the height direction 203 under the drive of the cylinder. When the moving plate 121 moves up and down, the pneumatic jaws of the clamping component close to clamp the bag mouth hem 104 at the top of the plugging surface 1021, and as the moving plate 121 moves, the clamped bag mouth hem 104 descends and is then lifted to the plugging position corresponding to the hem of the plugged surface 1022, so that the two hems are plugged in the vertical direction.

[0097] Through the above technical solution, by integrally designing the moving plate 121 and the clamping component, the automatic clamping and positioning of the bag mouth hem 104 are realized. When the moving plate 121 reciprocates in the height direction 203, the clamping component at its top moves synchronously, directly grabs the bag mouth hem 104 at the top of the plugging surface 1021. The moving plate 121 can not only drive the hem to perform accurate up and down reciprocating movements, but also support the front surface 101 of the bag body that follows the plugging surface 1021, so as to effectively avoid the risk of local pulling and tearing of the bag body. The structure that the end of the clamping component extends out of the outer edge of the pushing component 120 can ensure that the edge of the hem can be accurately contacted during the clamping process, avoiding plugging misalignment or hem tearing caused by position deviation.

[0098] Further, in the forming die 100 of the three-dimensional bag provided in the present application, please refer to Figure 6 and Figure 8 , a guiding member 125 is provided between the moving plate 121 and the die core body 110; when viewed along the length direction 201, the guiding member 125 extends in the height direction 203 and gradually moves away from the inner side wall surface of the moving plate 121 relative to the height direction 203 from top to bottom, and the moving plate 121 is translatably arranged on one side of the die core body 110 through the guiding member 125.

[0099] Specifically, the guiding member 125 refers to a mechanical structure that restricts the movement trajectory of the moving plate 121. Specifically, a structure in which a guide rail 1251 cooperates with a slider can be adopted. The guide rail 1251 can be fixedly connected to the side plate 122 on the side of the mold core body 110, and the slider is installed on the inner side wall surface of the moving plate 121. This member eliminates the swing of the moving plate 121 in the horizontal direction through linear constraint.

[0100] Specifically, by setting the guiding member 125 with a specific spatial orientation, that is, an inclined structure in which the guiding member 125 gradually moves away from the inner side wall surface of the moving plate 121 from top to bottom, a translational displacement in the horizontal direction is synchronously generated during the vertical lifting and lowering process of the moving plate 121. Specifically, during the up and down movement of the moving plate 121, for example, when the moving plate 121 moves upward, the moving plate 121 will gradually move away from the mold core body 110 along the guiding member 125 and displace outward. When the moving plate 121 moves downward, the moving plate 121 will gradually move away from the mold core body 110 along the guiding member 125 and displace inward. When the side sheet where the plugging surface 1021 is located is dragged downward, the bottom surface 103 of the bag body will tilt. At this time, the dimension of the bag body in the width direction 202 will become narrower. Through this design of the present application, the moving plate 121 can not only support the dragged part of the bag body, but also translate in the width direction 202 when the moving plate 121 moves. In this way, when the bag body tilts, the mold will also tilt and become narrower in the width direction 202, which can not only effectively support the bag shape, but also reduce the risk of the bag body being broken by the mold when it tilts.

[0101] Furthermore, in the forming mold 100 of the three-dimensional bag provided in the present application, a guide rail 1251 is provided on the side of the mold core body 110, and a guiding member 1252 adapted to the guide rail 1251 is provided on the inner side wall surface of the moving plate 121. A clamping interval is formed between the edge of the moving plate 121 and the side plate 122 of the pushing component 120 in the width direction 202, and the end of the clamping member extends out from the clamping interval.

[0102] The guide rail 1251 refers to a rigid guiding structure extending along the height direction 203. Specifically, it can be realized by using a metal track with a rectangular cross-section, which is fixedly installed on the side surface of the mold core body 110 and is used to provide a directional movement trajectory for the moving plate 121.

[0103] The guiding member 1252 refers to a sliding member that matches the shape of the guide rail 1251. Specifically, a slider with a groove or a convex block can be adopted. The size of the groove is adapted to the cross-section of the guide rail 1251 to ensure that the moving plate 121 does not shift when moving along the guide rail 1251.

[0104] The clamping interval refers to the gap reserved between the side plate 122 of the pushing component 120 and the edge of the moving plate 121, which can be specifically formed by adjusting the installation position of the side plate 122. The width of the gap is greater than the thickness of the protruding end of the clamping component, providing a moving channel for the clamping action.

[0105] Specifically, the cooperation between the guide rail 1251 and the guide member 1252 enables the moving plate 121 to always translate along a predetermined trajectory when moving in the height direction 203, preventing movement deviation caused by uneven force. When the moving plate 121 is driven to move up and down, the groove of the guide member 1252 forms a surface contact with the guide rail 1251, and the lateral force is offset by the frictional force of the contact surface. The clamping interval forms a continuous channel between the side plate 122 of the pushing component 120 and the moving plate 121. When the clamping component moves along with the moving plate 121, it can avoid collision with the side plate 122.

[0106] Through the above technical solution, the guiding member 125 is specifically designed as the guide rail 1251 on the side of the mold core body 110, and the corresponding guide member 1252 is arranged inside the moving plate 121, enabling the moving plate 121 to move stably along a fixed track. At the same time, a clamping interval is set in the width direction 202, which not only ensures the support strength of the pushing component 120 for the bag body but also avoids collision with the side plate 122 during the clamping action, taking into account both the movement accuracy of the moving plate 121 and the working space of the clamping component, and improving its operation reliability while ensuring the stability of the mold operation.

[0107] Furthermore, in the forming mold 100 of the three-dimensional bag provided in the present application, please refer to Figure 8 , the pushing component 120 further includes a plate driving component 127 for driving the moving plate 121 to move in the height direction 203, and a plate transmission component 128 arranged between the plate driving component 127 and the moving plate 121. The plate driving component 127 is fixedly arranged at the top of the pushing component 120. The power input end of the plate transmission component 128 is drivingly connected to the power output end of the plate driving component 127, and the power output end of the plate transmission component 128 is drivingly connected to the inner side wall surface of the moving plate 121. The plate driving component 127 drives the moving plate 121 to reciprocate in the height direction 203 through the plate transmission component 128.

[0108] The plate driving component 127 refers to a mechanical device that can output linear or rotational power, and can specifically be realized by an electric push rod, a hydraulic cylinder or a servo motor. This component is fixed at the top of the pushing component 120, and can avoid the vibration caused by the movement of the power source through rigid connection.

[0109] The plate transmission component 128 refers to a mechanical structure that transmits power from the driving component to the movable plate 121. Specifically, it can be implemented by a connecting rod mechanism, a gear rack 1331 or a push rod. It is used to connect the plate driving component 127 and the inner wall of the movable plate 121, and transmits the driving force evenly to the entire movable plate 121 through a rigid transmission path, thereby eliminating the risk of deviation caused by uneven force.

[0110] Specifically, during the forming process of the three-dimensional bag 10, the plate driving component 127 is activated to transmit power to the inner wall of the moving plate 121 through the plate transmission component 128. Since the plate transmission component 128 is rigidly connected to the inner wall of the moving plate 121, the driving force directly acts on the moving plate 121 body in a linear manner, causing it to produce precise lifting and lowering motion along the height direction 203. The moving plate 121 drives the clamping component on the top to move synchronously, thereby realizing the plugging action of the bag opening fold 104.

[0111] Through the above technical solution, the plate driving component 127 is fixed to the top of the push assembly 120, so that the plate driving component 127 can avoid interference with the side plate 122 when the mold is adjusted. The plate driving component 127 is connected to the movable plate 121 through the plate transmission component 128. The inner wall surface of the movable plate 121 is used as the connection point of the power output end, which can evenly distribute the driving force to the entire movable plate 121, ensuring that it maintains relative position stability with the mold core body 110 during the up and down movement, so as to accurately control the lifting stroke of the clamping component during the insertion process of the bag mouth folding edge 104, and avoid the folding edge dislocation or damage caused by the displacement of the movable plate 121.

[0112] Further, in the forming mold 100 of the three-dimensional bag provided in the present application, see Figure 8 and Figure 9 The plate transmission component 128 includes a push rod 1281, the lower end of the push rod 1281 is fixedly connected to the inner wall of the movable plate 121, and the upper end is formed with a movable groove 12811 extending along the width direction 202, and the output shaft of the plate driving component 127 can be relatively movably arranged in the movable groove 12811; the middle part of the push rod 1281 is provided with a slider extending toward the core body 110 and sleeved on the guide rail 1251, the plate driving component 127 drives the push rod 1281 to move up and down to link the movable plate 121 to reciprocate along the guide rail 1251, and the output shaft of the plate driving component 127 reciprocates in the movable groove 12811.

[0113] The push rod 1281 refers to a rigid rod for transmitting driving force, and can be specifically made of a metal rod or a high-strength composite rod. The lower end is fixedly connected to the moving plate 121 to transmit the up and down driving force, and the upper end forms a floating connection with the plate driving component 127 through the moving groove 12811 that can slide laterally. The moving groove 12811 refers to a long strip groove opened on the top of the push rod 1281 along the width direction 202, which can be specifically realized by milling or stamping, allowing the output shaft of the plate driving component 127 to slide laterally in the groove to compensate for the lateral displacement deviation caused by the inclination of the guide rail 1251. The slider refers to a sliding component sleeved on the guide rail 1251, and can be specifically made of a nylon slider or a sliding bearing with a ball. It is sleeved on the surface of the guide rail 1251 to form an auxiliary guide structure to enhance the stability of the push rod 1281 moving along the guide rail 1251.

[0114] Specifically, when the plate driving component 127 is started, its output shaft drives the push rod 1281 to move up and down and drives the moving plate 121 to slide along the guide rail 1251. Since the guide rail 1251 has an inclination angle relative to the height direction 203, the push rod 1281 will generate a lateral displacement demand due to the inclination of the guide rail 1251 during the up and down movement. At this time, the output shaft of the plate driving component 127 slides laterally in the moving groove 12811 to absorb the displacement change and avoid motion interference caused by the rigid connection. At the same time, the slider slides along the guide rail 1251 to form a double guide constraint, which not only ensures that the moving plate 121 moves along the predetermined inclination path, but also eliminates the transmission jamming caused by the inclination of the guide rail 1251 through the floating connection structure of the push rod 1281.

[0115] Further, in the forming mold 100 of the three-dimensional bag provided in the present application, see Figures 4 to 6 , Figure 11 , wherein the dragging component 130 includes a clamping driving component 132 arranged on the top of the moving plate 121, the clamping component includes a fixed jaw 1311 and a rotating jaw 1312, the fixed jaw 1311 is fixedly connected to the inner wall of the moving plate 121, and the fixed jaw 1311 has a clamping surface facing the outside of the moving plate 121 and aligned with the outer edge of the moving plate 121, the rotating jaw 1312 can be rotatably arranged on the fixed jaw 1311 relative to the fixed jaw 1311, the power output end of the clamping driving component 132 is transmission-connected to the rotating jaw 1312, and drives the rotating jaw 1312 to rotate relative to the fixed jaw 1311.

[0116] The clamping driving component 132 refers to a power source for controlling the clamping action, and specifically can be a cylinder or a motor, and its function is to provide driving power for the rotating clamping jaws 1312 to achieve the clamping action.

[0117] The fixed jaw 1311 refers to the clamping reference component fixedly connected to the moving plate 121, which can be specifically formed by processing a metal plate. The design that its clamping surface is aligned with the outer edge of the moving plate 121 is used to ensure the stability of the hemming positioning reference.

[0118] The rotating jaw 1312 refers to the movable component that rotates relative to the fixed jaw 1311, which can be specifically realized by a hinge or a rotating shaft connection structure. Its rotation trajectory is configured to form a clamping space with the fixed jaw 1311 when closed and release the hem when opened. That the clamping surface is aligned with the outer edge of the moving plate 121 means that their outer surfaces are in the same plane.

[0119] Specifically, during the bag body forming process, the fixed jaw 1311 forms a stable clamping reference surface through its rigid structure fixedly connected to the moving plate 121. When the bag mouth hem 104 is pushed to the clamping area, the clamping drive component 132 drives the rotating jaw 1312 to rotate around the fixed jaw 1311, so that the clamping surfaces of the rotating jaw 1312 and the fixed jaw 1311 form a closed state, thereby accurately clamping the predetermined position of the hem. Since the clamping surface is aligned with the outer edge of the moving plate 121, the hem can accurately maintain a parallel relationship with the side surface 102 of the bag body when being clamped. When dragging the hem to move in the height direction 203, the offset of the bag mouth hem 104 during the movement is avoided, and the rotation drive mode of the rotating jaw 1312 makes the application direction of the clamping force always perpendicular to the hem surface, which not only ensures the clamping reliability but also avoids material deformation caused by excessive pressing.

[0120] Furthermore, in the forming die 100 of the three-dimensional bag provided in the present application, a clamping transmission component 133 is arranged in the dragging component 130. The clamping transmission component 133 is movably connected to the inner side wall surface of the moving plate 121 along the height direction 203 of the moving plate 121. The power input end of the clamping transmission component 133 is connected to the clamping drive component 132, and the power output end is connected to the rotating jaw 1312. The clamping drive component 132 drives the rotating jaw 1312 to rotate relative to the fixed jaw 1311 through the clamping transmission component 133.

[0121] The clamping transmission component 133 refers to a mechanical structure that converts the linear motion of the clamping drive component 132 into the rotational motion of the rotating jaw 1312. The specific structure is not limited. For example, it can be realized by a rigid connecting piece or a rack and pinion 1331 mechanism. For example, the rack 1331 is slidably connected to the inner side wall surface along the height direction 203 of the moving plate 121. The upper end of the rack 1331 is connected to the clamping drive component 132, and the middle part is matched with the meshing part 13121 of the rotating jaw 1312.

[0122] Specifically, when the clamping drive component 132 is activated, the linear driving force it outputs drives the clamping transmission component 133 to move along the height direction 203 of the inner wall surface of the moving plate 121, driving the rotating jaw 1312 to rotate around the fulcrum of the fixed jaw 1311.

[0123] Through the above technical solution, the design that the clamping transmission component 133 is movably connected along the height direction 203 not only allows the moving plate 121 to drive the component 130 to move synchronously when it moves up and down, but also can ensure the control of the rotation angle of the rotating jaw 1312. By driving the clamping transmission component 133 with the clamping drive component 132, and then driving the rotating jaw 1312 to rotate relative to the fixed jaw 1311, this split-type transmission structure can adapt to the position change requirements in different stages of the mold forming process while ensuring the clamping force.

[0124] In an embodiment, the clamping transmission component 133 includes a rack 1331 slidably connected to the inner wall surface of the moving plate 121 along the height direction 203 of the moving plate 121. The rotating jaw 1312 has an engaging portion 13121 adapted to the rack 1331. The engaging portion 13121 of the rotating jaw 1312 is in tooth engagement with the rack 1331, and the upper end of the rack 1331 is drivingly connected to the power output end of the clamping drive component 132. The clamping drive component 132 drives the rack 1331 to move up and down to drive the rotating jaw 1312 to rotate relative to the fixed jaw 1311.

[0125] The rack 1331 can cooperate with the inner wall surface of the moving plate 121 through a guide rail 1251 or a chute to convert the linear motion of the clamping drive component 132 into the rotational motion of the rotating jaw 1312. The engaging portion 13121 refers to a tooth-shaped structure provided on the rotating jaw 1312, which can specifically be a gear segment matching the tooth pitch of the rack 1331. The power is transmitted through tooth surface contact to ensure that the rotation angle of the rotating jaw 1312 is proportional to the displacement of the rack 1331.

[0126] The clamping drive component 132 refers to the power source for driving the rack 1331 to move up and down. Specifically, a cylinder or a motor cooperating with a lead screw mechanism can be adopted, and its power output end is fixedly connected to the upper end of the rack 1331 through a coupling.

[0127] Specifically, the clamping transmission component 133 converts the linear motion of the clamping drive component 132 into the rotational motion of the rotating jaw 1312 through the meshing relationship between the rack 1331 and the rotating jaw 1312. When the clamping drive component 132 is activated, the rack 1331 slides up and down along the inner wall surface of the moving plate 121, and its tooth surface is continuously in contact with the engaging portion 13121 of the rotating jaw 1312, causing the rotating jaw 1312 to rotate around the fulcrum of the fixed jaw 1311. Thus, the opening and closing of the clamping component are realized.

[0128] Furthermore, during the movement of the moving plate 121 along the height direction 203, the rigid transmission of the rack 1331 avoids the clamping deviation caused by the clearance of the traditional link mechanism, ensuring uniform distribution of the clamping force. Moreover, since a scale can be formed on the entire height of the rack 1331, when adjusting the height of the clamping component for different heights of the bag type, only the positions of the two jaws need to be adjusted. At this time, the rotating jaw 1312 can still mesh with the rack 1331, and there is no need to adjust the clamping transmission component 133 and the clamping drive component 132, making the operation simpler and conducive to improving production efficiency.

[0129] Furthermore, in the forming mold 100 of the three-dimensional bag provided in the present application, please refer to Figures 4 to 6 、 Figure 10 , the adjusting assembly 140 includes a telescopic member 141 extending along the length direction 201 on the mold core body 110, a telescopic adjusting member 142 disposed on one side of the telescopic member 141, two pushing assemblies 120 are respectively connected to both ends of the telescopic member 141, and the telescopic adjusting member 142 is in transmission connection with the telescopic member 141 to drive the telescopic adjusting member 142 and link the telescopic member 141 to telescopically move relative to the mold core body 110 along the length direction 201 to adjust the relative distance between a pair of pushing assemblies 120 in the length direction 201.

[0130] The telescopic member 141 refers to a telescopic structure extending along the length direction 201 of the mold core body 110. The structure of the telescopic member 141 is not limited. For example, it can be a threaded telescopic rod 1411. Both ends of the threaded telescopic rod 1411 are respectively connected to the pushing assembly 120, and the movable shaft is telescoped by rotating the outer cylinder. The telescopic adjusting member 142 refers to a driving structure for controlling the movement of the telescopic member 141. Specifically, a combination of a worm and gear mechanism and a transmission chain can be used to achieve this, and multiple threaded telescopic rods 1411 are linked to telescopically move synchronously by rotating the adjusting shaft.

[0131] By integrating a telescopic adjusting mechanism, the production requirements of different specifications of three-dimensional bags 10 can be quickly adapted on the same mold. The mechanical synchronous adjustment of the distance between the pushing assemblies 120 avoids the operation error of manual repeated adjustment, effectively improving the accuracy of the bag body forming size. This design greatly reduces the mold replacement frequency and shortens the production preparation time, enabling the production line to quickly switch different product models, and overall improving the production efficiency and equipment utilization rate.

[0132] In one embodiment, the telescopic member 141 includes at least one threaded telescopic rod 1411, such as 1, 2, 3 or more threaded telescopic rods 1411. The threaded telescopic rod 1411 includes an outer cylinder and two movable shafts provided at both ends of the outer cylinder; an external thread is formed at one end of each movable shaft, and is sleeved in a fitting manner with the internal thread on the inner periphery of the corresponding end of the outer cylinder; the ends of the two movable shafts have external threads with opposite helix directions, and internal threads adapted to the external threads of the two movable shafts are respectively formed on the inner peripheries of both ends of the outer cylinder. One ends of the external threads of the two movable shafts are respectively thread-fitted to the corresponding ends on both sides of the outer cylinder; the other end of each movable shaft is fixedly connected to the side plate 122 of the corresponding push component 120.

[0133] Specifically, the threaded telescopic rod 1411 refers to a transmission component that realizes axial telescoping through the cooperation of internal and external threads. Specifically, a bidirectional threaded rod structure can be adopted to realize bidirectional synchronous displacement through the thread cooperation between the outer cylinder and the movable shaft. The outer cylinder refers to a sleeve structure with internal threads, which can be specifically realized by processing internal threads on a metal round pipe, and is used to accommodate the movable shaft and transmit rotational driving force. The movable shaft refers to a rod-shaped component with an external thread, which can be specifically made of alloy steel material and realizes axial movement by screwing into the outer cylinder. The threads with opposite helix directions mean that the thread directions at both ends are opposite, and specifically, a left-handed and a right-handed thread pair can be adopted to enable the two movable shafts at both ends to move synchronously and in opposite directions when the outer cylinder rotates. And the design of this structure will form a self-locking structure after adjustment, so that the push component 120 is in a stable state without an additional locking device.

[0134] Through the above embodiment, the problem that the distance between the push components 120 of the mold cannot be quickly adapted to different bag sizes is solved, and the universal adjustment of the molding mold 100 is realized. The screw transmission mechanism makes the adjustment process have high precision and repeatability, and the design of the bidirectional threads with opposite helix directions ensures the symmetrical displacement of the two push components 120 on both sides. The self-locking structure effectively maintains the working state after adjustment, avoids displacement deviation caused by vibration or load during the production process, and significantly reduces the mold replacement frequency and downtime.

[0135] In another embodiment, the telescopic member 141 includes a plurality of threaded telescopic rods 1411 spaced apart along the height direction 203, such as 2, 3, etc. The telescopic adjustment member 142 includes an adjustment portion 1421 and an intermediate transmission member 1422 provided between the adjustment portion 1421 and the plurality of threaded telescopic rods 1411. During use, when the adjustment portion 1421 is operated, the adjustment portion 1421 can drive one of the threaded telescopic rods 1411 to rotate, and then transmit the power from one threaded telescopic rod 1411 to the other threaded telescopic rods 1411 through the intermediate transmission member 1422.

[0136] Alternatively, the power input end of the intermediate transmission member 1422 may be transmission-connected to the adjustment portion 1421 , and the power output end of the intermediate transmission member 1422 may be transmission-connected to other threaded telescopic rods 1411 , that is, the adjustment portion 1421 may simultaneously link multiple threaded telescopic rods 1411 .

[0137] The structures of the adjusting portion 1421 and the intermediate transmission member 1422 are not limited.

[0138] In one embodiment, the adjusting portion 1421 includes a rotatable adjusting shaft extending perpendicular to the width direction 202, the adjusting shaft is disposed on the core body 110, and is drivingly connected to the outer cylinder of the threaded telescopic rod 1411 located at the top in the height direction 203. The outer wall of the adjusting shaft is provided with a first worm gear, and the outer wall of the outer cylinder of the threaded telescopic rod 1411 is provided with a second worm gear meshing with the first worm gear.

[0139] The intermediate transmission member 1422 includes meshing teeth disposed on the outer wall of the outer tube of each threaded telescopic rod 1411, and a transmission chain extending along the height direction 203 and meshing with each meshing tooth. One end of the adjustment shaft extends out of the mold core body 110 to form a rotation drive structure, which drives the multiple threaded telescopic rods 1411 to rotate synchronously by rotating the structure, so that the push assembly 120 moves relatively in the length direction 201.

[0140] Specifically, the meshing structure of the first worm gear and the second worm gear refers to a worm gear transmission mechanism, which can be implemented by using a single-head worm gear and a helical gear, and the self-locking characteristics of the worm gear prevent reverse rotation during the adjustment process. The matching structure of the meshing teeth and the transmission chain refers to a sprocket chain transmission mechanism, for example, equidistantly distributed straight-toothed sprocket teeth are set on the outer cylinder of each threaded telescopic rod 1411, which mesh with the annular roller chain to ensure that the rotation angle of each threaded telescopic rod 1411 remains consistent. The rotary drive structure can be specifically in the form of a hexagonal head bolt, which is convenient for operation using standard tools, and can also be configured with a handwheel structure to achieve manual adjustment.

[0141] During use, when the operator rotates the external drive structure of the adjustment shaft, the adjustment shaft drives the first worm gear to rotate, driving the second worm gear of the outer cylinder of the topmost threaded telescopic rod 1411 to rotate circumferentially. Since the outer cylinders of each threaded telescopic rod 1411 form a linkage relationship with the transmission chain through meshing teeth, all threaded telescopic rods 1411 will rotate synchronously, causing the two-end push-button components 120 to move symmetrically along the length direction 201. The self-locking effect generated by the worm gear transmission in this process can prevent displacement deviation caused by equipment vibration, and the chain transmission system ensures the synchronous movement of multiple threaded telescopic rods 1411 through rigid meshing, avoiding the phenomenon of asynchronous adjustment caused by single-point drive.

[0142] In some specific embodiments, a double-row roller chain can be adopted for the transmission chain, and the tooth profiles of the meshing teeth can be designed as circular arcs to reduce the contact stress. Tapered roller bearings can be provided at the supporting ends of the adjusting shafts to reduce the rotational frictional resistance. To facilitate observing the adjustment amount, a length scale can be provided on the surface of the mold core body 110, forming a position indicating device together with the pointer on the side of the pushing component 120.

[0143] Through the above technical solution, since the outer cylinders are linked through the transmission chain, the outer cylinders of all the threaded telescopic rods 1411 rotate synchronously. The matching of the helix directions of the internal threads in the outer cylinders and the external threads on the movable shafts causes the outer cylinders to push the two side movable shafts to move in equal speed and opposite directions along the length direction 201 when rotating, with higher control precision. In addition, the worm and worm gear structure forms self-locking while transmitting power, and the stability of the pushing component 120 after adjustment can be maintained without additionally setting a positioning device.

[0144] The above uses specific specific embodiments to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Although the description of the present application will be introduced in conjunction with the preferred embodiments, this does not mean that the features of this application are limited to this implementation manner. On the contrary, the purpose of introducing the application in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present application. To provide a deep understanding of the present application, many specific details will be included in the above description. The present application can also be implemented without using these details. In addition, to avoid confusing or obscuring the key points of the present application, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

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

[0146] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0147] The terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0148] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific situations.

Claims

1. A forming mold for a three-dimensional bag, used to provide shape support for the bag body during the process of forming a sheet into the three-dimensional bag, the three-dimensional bag comprising a bottom surface, two front surfaces arranged oppositely in the width direction of the bottom surface, and two side surfaces arranged oppositely in the length direction of the bottom surface; wherein: At least one of the two side surfaces comprises an inserting surface and an inserted surface, at least the ends of the inserting surface and the inserted surface facing each other overlap each other, and the tops of the inserting surface and the inserted surface and the pocket folds at positions corresponding to the overlapping portions are inserted into each other; characterized in that: The molding die comprises a mold core body, and a pair of push-pull components movably arranged on both sides of the mold core body in the length direction. During the molding process of the three-dimensional bag, each of the push-pull components pushes and supports the front surface, the side surface, and the bottom surface of the corresponding side of the three-dimensional bag; wherein A dragging assembly is provided on the pushing assembly corresponding to the side surface including the plug-in surface in the pair of pushing assemblies, and the dragging assembly includes a grabbing portion which is reciprocally movable along the height direction and is arranged on the top of the pushing assembly; and during the forming process of the three-dimensional bag, the grabbing portion grabs and drags the bag opening folded edge at the top of the plug-in surface on the corresponding side, reciprocates along the height direction relative to the bag opening folded edge at the top of the plug-in surface, and then plugs into the bag opening folded edge of the plug-in surface; and The molding die also includes an adjustment component extending along the length direction and arranged on the core body. The pair of push components are respectively connected to both ends of the adjustment component by transmission. The adjustment component can adjust the relative distance between the pair of push components in the length direction.

2. The three-dimensional bag forming mold according to claim 1, characterized in that: The dragging component includes a clamping component as the grabbing portion, the clamping component is reciprocatingly arranged at the top of the pushing component in the height direction, and the end portion thereof can be clamped and extended out of the outer edge of the pushing component; wherein, During the forming process of the three-dimensional bag, the end of the clamping component clamps and drags the bag opening folded edge at the top of the plug-in surface on the corresponding side to move back and forth in the height direction and then plugs into the bag opening folded edge of the plug-in surface.

3. The three-dimensional bag forming mold according to claim 2, characterized in that: The dragging assembly further includes a moving cylinder for driving the clamping member to reciprocate along the height direction, and a clamping cylinder for driving the clamping member to clamp; and A clamping groove extending along the height direction is provided on a side wall corresponding to one side of the pushing assembly, and an end portion of the clamping component extends out from the clamping groove.

4. The three-dimensional bag forming mold according to claim 1, characterized in that: The push-against assembly includes a movable plate which is reciprocally movable along the height direction and is arranged on one side of the mold core body and is opposite to the front side of the corresponding side of the three-dimensional bag; the dragging assembly includes a clamping component as the grabbing portion, the clamping component is arranged on the top of the movable plate, and the end portion can be clamped and extended out of the outer edge of the push-against assembly; wherein, During the forming process of the three-dimensional bag, the movable plate reciprocates along the height direction relative to the core mold body, drives the end of the clamping component to clamp the bag mouth folded edge at the top of the plug-in surface on the corresponding side and then drags the corresponding bag mouth folded edge to reciprocate in the height direction.

5. The three-dimensional bag forming mold according to claim 4, characterized in that: A guide member is provided between the movable plate and the mold core body; in When viewed along the length direction, the guide member extends along the height direction and gradually moves away from the inner wall of the movable plate from top to bottom relative to the height direction. The movable plate is movably arranged on one side of the core body through the guide member.

6. The three-dimensional bag forming mold according to claim 5, characterized in that: The guide member is a guide rail arranged on the side of the core body, and the inner wall surface of the movable plate is provided with a guide piece adapted to the guide rail; and In the width direction, an edge of the movable plate and a side plate of the push assembly have a clamping gap, and an end of the clamping member protrudes from the clamping gap.

7. The three-dimensional bag forming mold according to claim 6, characterized in that: The push assembly further includes a plate driving component for driving the movable plate to move along the height direction, and a plate transmission component disposed between the plate driving component and the movable plate; wherein, The plate driving component is fixedly arranged on the top of the pushing assembly, the power input end of the plate transmission component is transmission-connected to the power output end of the plate driving component, the power output end of the plate transmission component is transmission-connected to the inner wall surface of the movable plate, and the plate driving component drives the movable plate to reciprocate along the height direction through the plate transmission component.

8. The three-dimensional bag forming mold according to claim 7, characterized in that: The plate transmission component includes a push rod, the lower end of which is fixedly connected to the inner wall surface of the movable plate, and the upper end of which is formed with a moving groove extending along the width direction, and the output shaft of the plate driving component is relatively movably arranged in the moving groove; and A slider extending toward the mold core body and sleeved on the guide rail is provided in the middle of the push rod. The plate driving component drives the push rod to move up and down, links the movable plate to move back and forth along the guide rail, and the output shaft of the plate driving component moves back and forth in the movable groove.

9. The three-dimensional bag forming mold according to claim 4, characterized in that: The dragging assembly also includes a clamping driving component arranged on the top of the movable plate, the clamping component includes a fixed jaw and a rotating jaw, the fixed jaw is fixedly connected to the inner wall surface of the movable plate, and the fixed jaw has a clamping surface facing the outer side of the movable plate and aligned with the outer edge of the movable plate, the rotating jaw can be rotatably arranged on the fixed jaw relative to the fixed jaw, the power output end of the clamping driving component is transmission-connected to the rotating jaw, and drives the rotating jaw to rotate relative to the fixed jaw.

10. The three-dimensional bag forming mold according to claim 9, characterized in that: The dragging assembly further comprises a clamping transmission component disposed between the clamping drive component and the rotating clamping claw; wherein, The clamping transmission component is movably connected to the inner wall of the movable plate along the height direction of the movable plate, the power input end of the clamping transmission component is transmission-connected to the clamping drive component, the power output end of the clamping transmission component is transmission-connected to the rotating clamp, and the clamping drive component drives the rotating clamp to rotate relative to the fixed clamp through the clamping transmission component.

11. The three-dimensional bag forming mold according to claim 10, characterized in that: The clamping transmission component includes a rack slidably connected to the inner wall of the movable plate along the height direction of the movable plate, and the rotating jaw has an engaging portion adapted to the rack. The engaging portion of the rotating jaw is engaged with the rack, and the upper end of the rack is transmission-connected to the power output end of the clamping drive component. The clamping drive component drives the rack to move up and down to link the rotating jaw to rotate relative to the fixed jaw.

12. The three-dimensional bag forming mold according to any one of claims 1 to 4, characterized in that: The adjustment assembly includes a telescopic component extending along the length direction and arranged on the core body, and a telescopic adjustment component arranged on one side of the telescopic component; wherein, The two push-against assemblies are respectively connected to the two ends of the telescopic component, and the telescopic adjustment component is transmission-connected with the telescopic component to drive the telescopic adjustment component and link the telescopic component to telescope along the length direction relative to the core body to adjust the relative distance between the pair of push-against assemblies in the length direction.

13. The three-dimensional bag forming mold according to claim 12, characterized in that: The telescopic component includes at least one threaded telescopic rod, and the threaded telescopic rod includes an outer tube and two movable shafts arranged at both ends of the outer tube; wherein, An external thread is formed at one end of each movable shaft, which is adapted to be sleeved with the internal thread on the inner circumference of the corresponding end of the outer tube; and the ends of the two movable shafts respectively have external threads with opposite rotation directions, and the inner circumferences of the two side ends of the outer tube respectively form internal threads adapted to the external threads of the two movable shafts, and one end of the threads of the two movable shafts is threadedly adapted to the end of the corresponding side of the outer tube; and The other end of each movable shaft is fixedly connected to the side plate of the push assembly on the corresponding side.

14. The three-dimensional bag forming mold according to claim 13, characterized in that: in The telescopic component comprises a plurality of threaded telescopic rods spaced apart along the height direction; and The telescopic adjustment component includes an adjustment portion and an intermediate transmission member disposed between the adjustment portion and the plurality of threaded telescopic rods; wherein, The adjusting portion is adjusted to drive the intermediate transmission member to synchronously adjust the plurality of threaded telescopic rods.

15. The three-dimensional bag forming mold according to claim 14, characterized in that: The adjusting portion of the telescopic adjusting component comprises an adjusting shaft extending perpendicularly to the width direction and rotatably arranged on the core body, the adjusting shaft being drivingly connected to the outer cylinder of the threaded telescopic rod which is the uppermost in the height direction, wherein the outer wall surface of the adjusting shaft is formed with a first worm gear, and the outer wall surface of the outer cylinder of the threaded telescopic rod which is the uppermost is formed with a second worm gear which meshes with the first worm gear; and The intermediate transmission member includes meshing teeth formed on the outer wall surface of the outer tube of each threaded telescopic rod, and a transmission chain extending along the height direction and respectively meshing with the meshing teeth on the outer wall surface of the outer tube of each threaded telescopic rod; wherein One end of the adjusting shaft is formed with a rotating drive structure extending out of the mold core body. By driving the rotating drive structure, the adjusting shaft is linked to rotate and the outer tubes of the multiple threaded telescopic rods are driven to rotate, so that the pair of push-button components move away from or approach each other along the length direction.

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