Forming die for three-dimensional bag

Abstract

The utility model discloses a forming die for a three-dimensional bag, the forming die comprises a die connecting part and a die body, the die body presses a sheet material in the forming process of the three-dimensional bag and provides shape support for the three-dimensional bag, and the die connecting part is arranged at the top end of the die body and is detachably and fixedly connected with the die body. A mounting groove is formed in the mold connecting part, the mounting groove extends in the direction the same as the width direction of the mold body, and a mounting part which extends in the width direction and can be adaptively mounted in the mounting groove is arranged at the top end of the mold body. And moreover, the mold body can move in the width direction relative to the mold connecting part, so that the mounting part is adaptively fixed or separated relative to the mounting groove. And when the mounting groove and the mounting part are movably inserted and mounted, the deviation of the mold body in the vertical direction and the horizontal direction can be limited, quick and accurate positioning can be realized, and the efficiency and the positioning precision during replacement and mounting are higher.

Description

Technical Field

[0001] This utility model relates to the field of bag making technology, and in particular to a molding die for three-dimensional bags. Background Technology

[0002] Stand-up pouches, as a common packaging container, are widely used in the retail, food, and apparel industries. Their structure typically includes a pair of front panels, a pair of side panels, and a bottom. Generally, the front panels and bottom are connected, while the side panels are connected to the bottom via a connecting structure, thus forming a cavity that holds the contents.

[0003] Existing stand-up pouch production equipment typically uses a mold body to press sheet material into a stand-up pouch. Different sizes of stand-up pouches require different mold bodies, necessitating the replacement of different sized mold bodies when producing different sizes. Currently, mold body replacement is done manually, a cumbersome process requiring a support frame or manual support before fastening. However, this method suffers from poor stability and precision, and the need to pre-support the mold body before positioning and tightening with fasteners compromises installation accuracy. Pre-installing the replacement mold body before precise positioning and tightening further complicates the process, resulting in cumbersome steps and poor precision during replacement.

[0004] Therefore, existing technologies suffer from cumbersome replacement procedures and poor precision when changing the mold body. Utility Model Content

[0005] The purpose of this application is to solve the problems of cumbersome replacement steps and poor precision in the prior art when replacing the mold body.

[0006] To solve the above-mentioned technical problems, the embodiments of this application disclose a molding die for a three-dimensional bag, including a die connecting part and a die body. The die body presses the sheet material and provides shape support for the three-dimensional bag during the three-dimensional bag forming process. The die connecting part is disposed at the top of the die body and is detachably fixedly connected to the die body.

[0007] The mold connecting part has a mounting groove that extends in the same direction as the width of the mold body. The top of the mold body has a mounting part that extends in the width direction and can be fitted into the mounting groove. Furthermore, the mold body can move relative to the mold connecting part in the width direction so that the mounting part can be fitted and fixed or separated from the mounting groove.

[0008] By adopting the above technical solution, an installation groove is opened on the mold connection part, and an installation part adapted to the installation groove is set on the mold body. When changing different mold bodies, the installation part is aligned with the installation groove, and then the mold body is pushed along the width direction so that the installation part is fitted into the installation groove in a suitable way along the width direction. When the installation part moves in the installation groove, the position of the mold body in the height direction does not change. Therefore, the accuracy of the entire moving and installation process is high, the replacement steps are simple, and after the installation part is moved and installed in the installation groove, it can be fastened.

[0009] Furthermore, by setting up the mounting slot and the movable insertion of the mounting part, the offset of the mold body in the vertical and horizontal directions can be restricted, and the movement is limited to sliding along the width direction. This further ensures the straightness and stability of the movement path during disassembly and installation. As the mounting part slides within the mounting slot, the constraint force is continuously transmitted through the contact surface of the slot wall, keeping the mold body fixed in the height direction throughout the movement. This results in higher installation accuracy and easier fixation. Therefore, this application replaces the manual calibration method in traditional solutions with the physical constraints of the mechanical structure of the mounting part and mounting slot, and also improves the efficiency and positioning accuracy during disassembly and installation.

[0010] This application also discloses a molding die for a three-dimensional bag. A sliding mounting channel extending along the width direction is provided within the mounting groove. The mounting part is adapted to the cross-sectional shape of the sliding mounting channel and can slide relative to the sliding mounting channel. When the mounting part moves along the sliding mounting channel and is installed in the mounting groove, the mounting part and the die connection part are fixedly connected by fasteners, and the installation direction of the fasteners is perpendicular to the moving installation direction of the mounting part.

[0011] The above technical solution, after the mounting part moves along the sliding mounting channel and is installed in the mounting groove, is fixed by fasteners, which has the advantages of simple structure and fast fixing efficiency. Furthermore, the installation direction of the fasteners is perpendicular to the moving installation direction of the mounting part, and the vertical locking forms an orthogonal constraint, eliminating the sliding degree of freedom. This makes the mold body more stable after being fixed, preventing the mounting part from detaching from the mounting groove, optimizing the locking force on the mounting part, effectively resisting the shear force (such as vibration and shear force) generated by the mold body during operation, and also able to withstand greater impact forces, making it more suitable for vertical stamping dies.

[0012] More preferably, the mounting portion is fixed to the top of the mold body and protrudes relative to the top of the mold body. Furthermore, the mold connecting portion is provided with a plurality of fasteners spaced apart, and the mounting portion is provided with connecting holes adapted to the plurality of fasteners. Each fastener passes through the mold connecting portion and is fixedly connected to the mounting portion.

[0013] More preferably, the mold connecting part includes two opposing support arms, which surround and form a mounting groove, and a sliding groove opening is formed in the middle of the side near the mold body for the mounting part to pass through. Furthermore, the mounting part includes a connecting part and a plug-in part connected to each other; the connecting part is adapted to fit within the mounting groove and to fit with the two support arms, and the plug-in part is adapted to fit within the sliding groove opening.

[0014] More preferably, when viewed along the width direction of the mold body, the two supporting bottom arms are arranged opposite each other, and each supporting bottom arm has an "L" shaped cross-section. Furthermore, the cross-sectional width of the connecting part is greater than the width of the groove opening, and the insertion part and the connecting part together form a "T" shaped cross-section.

[0015] By adopting the above technical solution, the support arm with an "L"-shaped cross-section can provide support to the mounting part, making the mounting part more stable after assembly.

[0016] More preferably, an auxiliary mounting pad is also provided in the mounting groove. The auxiliary mounting pad is located on the side of the mounting groove away from the mold body, wherein the lower surface of the auxiliary mounting pad is in contact with the upper surface of the mounting part, and the upper surface is in contact with the inner wall of the top side of the mounting groove. Furthermore, the auxiliary mounting pad is provided with connecting holes for fasteners to pass through.

[0017] More preferably, a limiting baffle is also provided at one end of the mounting groove in the width direction. Furthermore, when the mounting part is adapted to the mounting groove and the corresponding end abuts against the limiting baffle, the other end of the mounting part away from the limiting baffle is flush with the other end of the mold connecting part away from the limiting baffle.

[0018] By adopting the above technical solution, the auxiliary installation pad can improve the installation and fixing effect, making the installation part more stable and reliable when installed in the installation groove, and the limit baffle plays a role in stopping and limiting.

[0019] The embodiments of this application also disclose a molding die for a three-dimensional bag, wherein an air hole connector is provided on the die connecting part. The mounting part has an air hole connecting groove adapted to the air hole connector, and the air hole connector is detachably connected to the air hole connecting groove.

[0020] The air vent connector has an air passage that is connected to the pneumatic components inside the mold body, and the air vent connector is connected to an external air supply source through a pipeline.

[0021] The embodiments of this application also disclose a molding die for a three-dimensional bag. The die body includes a top wall and a bottom wall, and also includes two front walls and two side walls erected on the periphery of the top wall and the bottom wall. The mounting part is integrally disposed on the upper end of the top wall, and the bottom wall is used to contact and press the sheet material.

[0022] More preferably, a mold driving mechanism is also provided on one side of the mold body. The power output end of the mold driving mechanism is detachably connected to the side of the mold connection part away from the mold body. The power output end of the mold driving mechanism can drive the mold body to reciprocate along the height direction. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure of the molding die for the three-dimensional bag provided in this embodiment of the utility model;

[0024] Figure 2 A partial structural diagram of the mounting part and mounting groove of the forming mold for the three-dimensional bag provided in this embodiment of the utility model;

[0025] Figure 3 A partial structural diagram of the mounting part of the molding die for the three-dimensional bag provided in this embodiment of the present invention, showing its movable installation along the mounting groove.

[0026] Figure 4 A partial structural diagram of the mold connection part of the three-dimensional bag forming mold provided in the embodiment of this utility model is provided with a limiting baffle.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Mold connection part;

[0029] 110. Mounting slot; 120. Support arm; 130. Slide opening; 140. Auxiliary mounting pad; 150. Limiting baffle; 160. Air vent connector;

[0030] 200. Mold body;

[0031] 210. Installation Department;

[0032] 211. Connecting hole; 212. Connecting part; 213. Insertion part;

[0033] 220. Top wall; 230. Front wall; 240. Side wall;

[0034] A. Width direction of the mold body. Detailed Implementation

[0035] As mentioned in the background section, existing equipment for producing stand-up pouches typically uses a mold body to press sheet material into a stand-up pouch. The mold body is generally cubic in shape and made of metal, resulting in a large volume and weight. The pressing action of the mold body is usually vertical, driven by a vertical drive mechanism that moves the mold body up and down repeatedly to press the material. Different sizes of stand-up pouches require different mold bodies. Current methods for changing mold bodies involve manual disassembly and replacement, a cumbersome process. Replacing the mold body requires a support frame or manual support, followed by initial accurate positioning and pre-assembly. After pre-assembly, precise positioning and fastening are then performed, resulting in inconvenience and poor accuracy during mold replacement.

[0036] Therefore, this application provides a novel molding die for a three-dimensional bag, including a die connecting part and a die body. The die connecting part is connected to a drive mechanism, and the die body is provided with an mounting part. The die connecting part is provided with a mounting groove that matches the mounting part. The die body can be quickly disassembled, installed, and fixed by sliding and inserting the mounting part. This has the advantages of higher replacement efficiency and positioning accuracy.

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0038] This application discloses a molding die for a three-dimensional bag; please refer to [link to relevant documentation]. Figure 1 The molding die includes a die connecting part 100 and a die body 200. The die body 200 presses the sheet material and provides shape support for the three-dimensional bag during the molding process. The die connecting part 100 is located at the top of the die body 200 and is detachably fixedly connected to it. The die body 200 includes a top wall 220 and a bottom wall, and also includes two front walls 230 and two side walls 240 erected on the periphery of the top wall 220 and the bottom wall. The mounting part 210 is integrally disposed on the upper end of the top wall 220, and the bottom wall is used to contact and press the sheet material.

[0039] The mold connecting portion 100 has a mounting groove 110 extending in the same direction as the width of the mold body 200. The top of the mold body 200 has a mounting portion 210 extending in the width direction and adaptable to be installed within the mounting groove 110. Furthermore, the mold body 200 can move relative to the mold connecting portion 100 in the width direction, allowing the mounting portion 210 to be fitted and fixed or separated from the mounting groove 110. The width direction of the mold body 200 is as follows: Figure 1 Shown in direction A.

[0040] It should be noted that for mold bodies 200 of different specifications, the size of the mounting part 210 of each mold body 200 is the same. The only difference is the volume of the body part on the mold body 200 used to press the sheet material into a three-dimensional bag. In other words, the structure of the mounting part 210 of mold bodies 200 of different specifications is the same and it is compatible with the mounting groove 110. For example, the mounting part 210 can be designed in a standardized manner. Therefore, when replacing the mold body 200, the mounting part 210 and the mounting groove 110 can be aligned, then the mounting part can be inserted horizontally and finally fastened.

[0041] Specifically, the structure of the mounting groove 110 can be designed by those skilled in the art according to actual needs. For example, the mounting groove 110 can be set as a "concave" groove, or it can be a rectangular groove, a "V" shaped groove, etc. This embodiment does not make specific limitations in this regard.

[0042] By adopting the design of this application, an installation groove 110 is opened on the mold connection part 100, and an installation part 210 adapted to the installation groove 110 is provided on the mold body 200. When changing different mold bodies 200, the installation part 210 is aligned with the installation groove 110, and then the mold body 200 is pushed along the width direction so that the installation part 210 is fitted into the installation groove 110 in a suitable manner along the width direction. When the installation part 210 moves in the installation groove 110, the position of the mold body 200 in the height direction does not change. Therefore, the accuracy is high in the entire moving and installation process. After the installation part 210 is moved and installed in the installation groove 110, it can be fastened.

[0043] Furthermore, by setting the mounting groove 110 and mounting part 210 for movable insertion and installation, the offset of the mold body 200 in the vertical and horizontal directions can be restricted, and the movement is limited to sliding along the width direction. This further ensures the straightness and stability of the movement path during disassembly and installation. When the mounting part 210 slides within the mounting groove 110, the constraint force is continuously transmitted through the groove wall contact surface, keeping the mold body 200 fixed in the height direction throughout the movement. This results in higher installation accuracy and easier fixation. Therefore, this application replaces the manual calibration method in traditional solutions with the physical constraint of the mechanical structure of the mounting part 210 and mounting groove 110, resulting in higher efficiency and positioning accuracy during disassembly and installation.

[0044] This application also discloses a molding die for a three-dimensional bag. A sliding mounting channel extending along the width direction is provided within the mounting groove 110. The mounting part 210 is adapted to the cross-sectional shape of the sliding mounting channel and can slide relative to the sliding mounting channel. When the mounting part 210 moves along the sliding mounting channel and is installed within the mounting groove 110, the mounting part 210 is fixedly connected to the mold connection part 100 by fasteners, and the installation direction of the fasteners is perpendicular to the moving installation direction of the mounting part 210.

[0045] Specifically, in this embodiment, the moving installation direction of the mounting part 210 is horizontal, and the installation direction of the fastener is vertical. After the mounting part 210 moves along the sliding installation channel and is installed in the mounting groove 110, it is fixed by the fastener, which has the advantages of simple structure and fast fixing efficiency. Furthermore, the installation direction of the fastener is perpendicular to the moving installation direction of the mounting part 210. The vertical locking forms an orthogonal constraint, eliminating the sliding degree of freedom, making the mold body 200 more stable after being fixed. It can prevent the mounting part 210 from detaching from the mounting groove 110, optimize the locking force on the mounting part 210, effectively resist the shear force (such as vibration, shear force, etc.) generated by the mold body 200 during operation, and can also withstand greater impact force, making it more suitable for vertical stamping dies.

[0046] Further preferred, please refer to Figure 1 as well as Figure 2 The mounting portion 210 is fixed to the top of the mold body 200 and protrudes relative to the top of the mold body 200. Furthermore, a plurality of fasteners (not shown in the figure) are provided at intervals on the mold connecting portion 100, and the mounting portion 210 is provided with connection holes 211 adapted to the plurality of fasteners. Each fastener passes through the mold connecting portion 100 and is fixedly connected to the mounting portion 210.

[0047] Specifically, in this embodiment, the fastener can be a common threaded component such as a bolt or screw, or it can be a fastener such as a rivet. Taking a bolt as an example, the mold connecting part 100 is provided with a bolt hole that matches the bolt, and the connecting hole 211 on the mounting part 210 is also a bolt hole. After the mounting part 210 is slidably installed into the mounting groove 110, the bolt hole on the mold connecting part 100 is aligned with the bolt hole on the mounting part 210. Then each bolt passes through the bolt hole in sequence and is fastened, thereby fastening the mounting part 210 and the mold connecting part 100 together. The fastening installation direction of each bolt is perpendicular to the moving installation direction of the mounting part 210.

[0048] For example, there may be 4, 6, 8 or even more fasteners. The fasteners are preferably bolts of the same volume, and the bolts are arranged in a spaced manner. This spaced arrangement optimizes mechanical properties, avoids gravity concentration, and improves the connection reliability and stability of the structure.

[0049] Further preferred, please refer to Figure 2 The mold connecting part 100 includes two opposing support arms 120, which surround and form a mounting groove 110, and a groove opening 130 is formed in the middle of the side near the mold body 200 for the mounting part 210 to pass through. The mounting part 210 includes a connecting part 212 and a plug-in part 213 connected to each other. The connecting part 212 is adapted to the mounting groove 110 and to the two support arms 120, and the plug-in part 213 is adapted to the groove opening 130.

[0050] More preferably, when viewed along the width direction of the mold body 200, the two supporting bottom arms 120 are arranged opposite each other, and each supporting bottom arm 120 has an "L" shaped cross-section. Furthermore, the cross-sectional width of the connecting part 212 is greater than the width of the slide opening 130, and the insertion part 213 and the connecting part 212 together form a "T" shaped cross-section.

[0051] With this structural design, the "L"-shaped cross-section support arm 120 provides support to the mounting portion 210. The horizontal side of the "L"-shaped cross-section support arm 120 overlaps with the connecting portion 212 and provides a support surface. See also... Figure 3 The T-shaped cross-section of the mounting part 210 (the insertion part 213 and the connecting part 212) and the L-shaped groove of the support base arm 120 form an interlocking structure. After the insertion part 213 is engaged with the slide opening 130, the connecting part 212 is restricted within the mounting groove 110, forming a "mechanical stop" effect to prevent the mounting part 210 from accidentally coming out in the axial or vertical direction, ensuring the reliability of the mold for long-term use.

[0052] Furthermore, the width of the insertion part 213 is strictly matched with the size of the slide opening 130 to ensure that there is no horizontal wobbling after the installation part 210 is inserted; the width of the connecting part 212 is greater than the slide opening 130, which naturally restricts vertical displacement and achieves a quick positioning effect of "one insertion and it is fixed", which has the core advantages of mechanical interlocking and rapid assembly.

[0053] Further preferred, please refer to Figure 1An auxiliary mounting pad 140 is also provided inside the mounting groove 110. The auxiliary mounting pad 140 is located on the side of the mounting groove 110 away from the mold body 200. The lower surface of the auxiliary mounting pad 140 is in contact with the upper surface of the mounting part 210, and the upper surface is in contact with the inner top wall of the mounting groove 110. Furthermore, the auxiliary mounting pad 140 is provided with a connecting hole 211 for fasteners to pass through.

[0054] By setting the auxiliary mounting plate 140, structural compensation and tolerance absorption can be achieved, ensuring a tight fit between the mounting part 210 and the mounting groove 110, and avoiding vibration or abnormal noise caused by loosening. The auxiliary mounting plate 140 is preferably made of a material with good elasticity and compressibility, such as rubber or copper alloy. Furthermore, the auxiliary mounting plate 140 can further reduce the pressure on the contact surface, further improving structural stability and connection strength.

[0055] Further preferred, please refer to Figure 4 In the width direction, a limiting baffle 150 is also provided at one end of the mounting groove 110. Furthermore, when the mounting part 210 is adapted to the mounting groove 110 and the corresponding end abuts against the limiting baffle 150, the other end of the mounting part 210 away from the limiting baffle 150 is flush with the other end of the mold connecting part 100 away from the limiting baffle 150.

[0056] This structural design, with the auxiliary mounting pad 140, improves the installation and fixing effect, making the mounting part 210 more stable and reliable when installed in the mounting groove 110. The limiting baffle 150 acts as a stop and limit. For example, when changing the mold body 200, the mounting part 210 is aligned with the mounting groove 110 and then moved into the mounting groove 110 for insertion. When the mounting part 210 and the limiting baffle 150 are in contact and flush, the mold body 200 is accurately positioned. Finally, it can be fastened with fasteners.

[0057] This application also discloses a molding die for a three-dimensional bag, wherein an air vent connector 160 is provided on the die connecting part 100. The mounting part 210 has an air vent connecting groove adapted to the air vent connector 160, and the air vent connector 160 is detachably connected to the air vent connecting groove. The air vent connector 160 has an air passage that communicates with a pneumatic component within the die body 200, and the air vent connector 160 is connected to an external air supply source via a pipeline.

[0058] Specifically, when pneumatic components are installed inside the mold body 200, such as a drive cylinder, the pipes are connected through the air hole connector 160 and air is supplied through an external air source (such as an air pump), resulting in a more compact structure.

[0059] More preferably, a mold drive mechanism (not shown in the figure) is also provided on one side of the mold body 200. The power output end of the mold drive mechanism is detachably connected to the side of the mold connection part 100 away from the mold body 200. The power output end of the mold drive mechanism can drive the mold body 200 to reciprocate along the height direction.

[0060] Specifically, please see Figure 3 A U-shaped connecting post is provided at the end of the mold connecting part 100 away from the mold body 200. The connecting post is fixedly connected to the power output end of the mold driving mechanism. The power output end of the mold driving mechanism drives the mold connecting part 100 and the mold body 200 to reciprocate along the height direction (vertical direction). The mold driving mechanism can be a driving cylinder and a driving rod, with the driving cylinder driving the driving rod to reciprocate; or the mold driving mechanism can be a motor and a belt to drive the mold connecting part 100 and the mold body 200 to reciprocate; or the mold driving mechanism can be a motor and an eccentric wheel mechanism to drive the mold connecting part 100 and the mold body 200 to reciprocate. Those skilled in the art can design and select according to actual needs, and this embodiment does not make specific limitations.

[0061] Finally, a brief description is given of the installation and operation of the molding die for the three-dimensional bag disclosed in this application:

[0062] Please see first. Figure 2 When replacing the mold body 200, first remove the original mold body, then align the mounting part 210 of the mold body 200 to be replaced with the mounting groove 110, and then move the mold body 200 and the mounting part 210 along the width direction A of the mold body, so that the mounting part 210 moves into the mounting groove 110 for insertion. The moving and insertion process is as follows: Figure 3 As shown, once the mounting part 210 and the limiting baffle 150 are flush, the mold body 200 is accurately positioned, and finally, it can be securely installed using fasteners. The replaced molding die is shown below. Figure 1 As shown, the replaced molding die can be put into the production line to produce three-dimensional bags.

[0063] It should be noted that, in addition to the specific embodiments described above, those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model is presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. In order to provide a deep understanding of this utility model, many specific details are included in the above description, and this utility model may also be implemented without using these details. In addition, in order to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0064] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0065] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0066] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0067] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0068] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A forming mold for a three-dimensional bag, characterized by, The mold includes a mold connecting part and a mold body. The mold body presses the sheet material and provides shape support for the three-dimensional bag during the forming process. The mold connecting part is located at the top of the mold body and is detachably and fixedly connected to it. The mold connecting part is provided with a mounting groove, which extends in the same direction as the width direction of the mold body. The top end of the mold body is provided with a mounting part that extends in the width direction and can be fitted into the mounting groove; and The mold body can move relative to the mold connecting part along the width direction so that the mounting part can be adapted to be fixed or separated from the mounting groove.

2. The forming mold for a three-dimensional bag of claim 1, wherein, The mounting groove is provided with a sliding mounting channel extending along the width direction. The mounting part is adapted to the cross-sectional shape of the sliding mounting channel and can slide relative to the sliding mounting channel. When the mounting part moves along the sliding mounting channel and is installed in the mounting groove, the mounting part and the mold connecting part are fixedly connected by fasteners, and the mounting direction of the fasteners is perpendicular to the moving mounting direction of the mounting part.

3. The molding die for a three-dimensional bag as described in claim 2, characterized in that, The mounting portion is fixed to the top of the mold body and protrudes relative to the top of the mold body; and The mold connecting part is provided with a plurality of fasteners at intervals, and the mounting part is provided with connecting holes adapted to the plurality of fasteners. Each fastener passes through the mold connecting part and is fixedly connected to the mounting part.

4. The forming mold for a three-dimensional bag of claim 3, wherein, The mold connecting part includes two opposing support arms, which surround and form the mounting groove, and a sliding groove opening is formed in the middle of the side near the mold body for the mounting part to pass through; and The mounting part includes a connecting part and a plug-in part that are connected to each other. The connecting part is adapted to the mounting groove and to the two supporting bottom arms, and the plug-in part is adapted to the sliding groove opening.

5. The forming mold for a three-dimensional bag of claim 4, wherein, Viewed along the width of the mold body, the two supporting arms are arranged opposite each other, and each supporting arm has an "L" shaped cross-section; and The cross-sectional width of the connecting part is greater than the width of the groove opening, and the insertion part and the connecting part together form a "T" shaped cross-section.

6. The forming mold for a three-dimensional bag of claim 2, wherein, An auxiliary mounting pad is also provided inside the mounting groove. The auxiliary mounting pad is located on the side of the mounting groove away from the mold body. The lower surface of the auxiliary mounting pad is in contact with the upper surface of the mounting part, and the upper surface is in contact with the inner top wall of the mounting groove. The auxiliary mounting pad is provided with connecting holes for the fasteners to pass through.

7. The forming mold for a three-dimensional bag of claim 1, wherein, In the width direction, a limit baffle is also provided at one end of the mounting groove; and When the mounting part is fitted into the mounting groove and one end of the mounting part abuts against the limiting baffle, the other end of the mounting part away from the limiting baffle is flush with the other end of the mold connecting part away from the limiting baffle.

8. The three-dimensional bag-forming mold of claim 1, wherein The mold connecting part is also provided with an air hole connector; wherein The mounting portion has an air hole connection groove adapted to the air hole connector, and the air hole connector is detachably connected to the air hole connection groove; and The air hole connector has an air passage that is connected to a pneumatic component inside the mold body, and the air hole connector is connected to an external air supply source through a pipeline.

9. The forming mold for a three-dimensional bag according to any one of claims 1 to 8, characterized by, The mold body includes a top wall and a bottom wall, and also includes two front walls and two side walls erected on the periphery of the top wall and the bottom wall, wherein... The mounting part is integrally disposed on the upper end of the top wall, and the bottom wall is used to contact the sheet material and press the sheet material.

10. The forming mold for a three-dimensional bag of claim 9, wherein, A mold driving mechanism is also provided on one side of the mold body. The power output end of the mold driving mechanism is detachably connected to the side of the mold connection part away from the mold body. The power output end of the mold driving mechanism can drive the mold body to reciprocate along the height direction.

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