Mold change system for non-woven fabric bag forming device

Abstract

A mold change system (10) for a non-woven fabric bag forming device. A forming unit of the non-woven fabric bag forming device is provided with a mold receiving assembly (20); when a user inputs a bag model to be produced, the mold change system (10) would determine, on the basis of said input bag model, a mold (101) that needs to be connected to the mold receiving assembly (20) and matches said bag model; if the mold (101) matching said bag model is located on one of a plurality of bearing seats (110), a control unit (300) drives a pickup assembly (210) to move to the mold receiving assembly (20), detach the current mold (101) from the mold receiving assembly (20), and transfer same to an idle bearing seat (110) in a mold bearing unit (100), and drives the pickup assembly (210) to pick up the mold (101) matching said bag model from the bearing seat (110) and transfer same to the mold receiving assembly (20); and the mold receiving assembly (20) is connected to the mold (101) and performs production. By using the mold change system (10), the molds (101) can be efficiently changed, facilitating the production of bags of different models by the non-woven fabric bag forming device.

Description

Die changing system for nonwoven bag forming equipment Technical Field

[0001] This invention relates to the field of packaging bag processing technology, and in particular to a mold changing system for nonwoven bag forming equipment. Background Technology

[0002] Non-woven bags, also known as fabric bags, are made from non-woven fabric, a type of non-woven cloth produced from polymer chips, short fibers, or filaments through specific processes (such as spunbonding, meltblowing, and needle punching). Non-woven bags are durable, aesthetically pleasing, breathable, lightweight, soft, and comfortable. They also possess characteristics such as moisture resistance, flexibility, non-combustibility, easy decomposition, and non-toxicity. Furthermore, non-woven bags are reusable and washable environmentally friendly products. Their raw material, polypropylene (PP), is non-toxic, odorless, and leaves no residue when burned, thus not polluting the environment. Therefore, in recent years, non-woven bags have been widely promoted and used, leading to the rapid development of fully automated non-woven bag manufacturing technology.

[0003] Existing nonwoven stand-up pouches are formed in one step by a stand-up pouch forming machine. During processing, a mold lifting device is used to press the flat nonwoven fabric into a cuboid through the mold. In actual production, customers need stand-up pouches of different sizes and specifications. However, the molds are usually large, heavy, and have an integrated structure. Therefore, when processing stand-up pouches of different sizes, multiple molds need to be prepared for replacement, which increases production costs. Moreover, mold replacement is time-consuming and labor-intensive, making product processing troublesome and inefficient.

[0004] For example, a Chinese patent (publication number CN106671481B) discloses an adjustable mold assembly with a stripper plate on the mold, allowing for detachable connection between the stripper plate and the mold. When processing stand-up pouches of different sizes, only the stripper plate needs to be replaced to change the size of the processing part of the mold assembly, thus enabling the product to quickly process stand-up pouches of different sizes. However, because the mold is assembled inside a molding machine, and the molding machine contains many components with limited space for movement, it is difficult to easily install or remove the stripper plate on the mold without disassembling the mold. Summary of the Invention

[0005] The purpose of this invention is to solve the problem in the prior art that different sizes of molds are needed to process three-dimensional bags of different sizes. Manually changing the molds is time-consuming, labor-intensive, and inefficient. Changing the size of the processing part of the mold assembly by changing the stripper plate is also problematic because the mold is assembled inside the molding machine, which has many components and relatively little space for movement. Without disassembling the mold, it is difficult to conveniently install or remove the stripper plate on the mold. Therefore, the existing molding device has the technical problem of not being able to easily adjust the mold when processing non-woven bags of different sizes.

[0006] To address the aforementioned technical problems, embodiments of the present invention disclose a mold-changing system for a nonwoven bag forming equipment. The nonwoven bag forming equipment includes a forming unit for forming the bag body of a nonwoven bag, and the forming unit is provided with a mold receiving assembly detachably connected to a mold for forming the bag body. The mold-changing system includes:

[0007] The mold support unit has multiple support seats, each of which can switch between a loaded state with a mold and an unloaded state without a mold.

[0008] The mold changing unit includes a pickup component that can be connected to the mold and move the mold between the mold receiving component and any of the carriers.

[0009] The control unit is electrically connected to the mold receiving assembly, the mold carrying unit, and the mold changing unit.

[0010] The user inputs the desired bag type, and the control unit determines the matching mold that needs to be connected to the mold receiving assembly based on the input. The control unit then drives the pickup assembly to the mold receiving assembly, removes the existing mold from the mold receiving assembly, and transports it to the unloaded support in the mold carrying unit. Furthermore, the control unit drives the pickup assembly to pick up the matching mold from the loaded support in the mold carrying unit, transports the mold to the mold receiving assembly, and connects the mold to the mold receiving assembly.

[0011] Using the above technical solution, the forming unit of the nonwoven bag forming equipment has a mold receiving assembly. The mold receiving assembly is detachably connected to the mold and, in conjunction with the mold, extrudes the nonwoven fabric, causing the nonwoven fabric to be compressed into a cuboid. After the user inputs the desired bag type, the mold changing system determines the mold that needs to be connected to the mold receiving assembly and matches the desired bag type. If the mold matching the desired bag type is located on one of the multiple carriers, the control unit drives the pick-up assembly to the mold receiving assembly, removes the existing mold from the mold receiving assembly, and transports it to the unloaded carrier in the mold carrier unit. The control unit then drives the pick-up assembly to pick up the mold matching the desired bag type from the carrier and transport it to the mold receiving assembly. The mold receiving assembly connects to the mold matching the desired bag type and begins production.

[0012] This mold-changing system can replace multiple molds mounted on a support base and on a mold receiving component using a pick-up component. Compared to existing technologies that require installing or removing stripper plates from the molds or manually disassembling and assembling the molds, this system reduces the difficulty of mold changing, saves time and labor, and thus has the advantage of high mold-changing efficiency. Furthermore, having multiple molds mounted separately on the support base effectively secures idle molds and facilitates the pick-up component in picking up idle molds.

[0013] Embodiments of the present invention also disclose a mold changing system for a nonwoven bag forming equipment, wherein the pick-up component transports the mold along the mold unloading path or the mold loading path.

[0014] The unloading path is located between the mold connection position of the mold receiving component and the unloaded support seat in the mold bearing unit.

[0015] The mold loading path is located between the load-bearing seat in the mold bearing unit and the mold connection position of the mold receiving assembly.

[0016] Using the above technical solution, all idle molds are located on the support base. During mold changing, the pick-up component only needs to move the mold to be disassembled from the mold receiving component to the unloaded support base along the mold removal path, and the unloaded support base loads the mold. Then, it moves the mold to be replaced from the support base to the mold receiving component along the mold loading path, and the mold receiving component connects it. Therefore, after determining the support base where the mold to be replaced is located, the path for the pick-up component to transport the mold is relatively simple, making it easier to control the movement of the pick-up component.

[0017] The embodiments of the present invention also disclose a mold changing system for a nonwoven bag forming equipment. The mold changing unit further includes a guide component, and a pickup component is disposed on the guide component.

[0018] The guiding assembly includes a first guide extending along a first direction between the mold receiving assembly and the mold carrying unit, and a second guide extending along a second direction through the opening of each carrier seat in the mold carrying unit; wherein the first direction and the second direction intersect each other, and the first guide is disposed on the second guide and is movable relative to the second guide along the second direction, and the picking assembly is movably disposed on the first guide along the first direction.

[0019] Furthermore, the guiding component also includes a first driving member and a second driving member, both of which are electrically connected to the control unit; wherein, the first driving member drives the pickup component to move along a first direction, and the second driving member drives the first guiding member to move along a second direction.

[0020] Using the above technical solution, during the mold changing process, the picking component moves along the guide component between the mold receiving component and multiple support seats. For example, during the mold unloading process, the first driving component drives the picking component to move the mold removed from the mold receiving component along the first guide component to the mold support unit. Further, the second driving component drives the first guide component to move along the second guide component, so that the picking component on the first guide component corresponds to the support seat in the unloaded state, and the unloaded support seat loads the removed mold. During the mold loading process, the second driving component drives the first guide component to move along the second guide component, so that the picking component on the first guide component corresponds to the support seat loading the mold to be replaced. The picking component picks up the mold to be replaced. Then, the second driving component drives the first guide component to move along the second guide component, so that one end of the first guide component corresponds to the mold receiving component. The first driving component drives the picking component to transport the mold to be replaced along the first guide component to the mold connection position of the mold receiving component, and the mold receiving component connects the mold to be replaced, completing the mold changing process.

[0021] Therefore, the movement path of the pickup component on the first guide belongs to both the mold unloading path and the mold loading path, while the movement path of the pickup component linked by the first guide on the second guide toward the unloaded carrier belongs to the mold unloading path; the movement path of the pickup component linked by the first guide on the second guide from the carrier of the mold to be replaced toward the position corresponding to the mold receiving component belongs to the mold loading path.

[0022] The embodiments of the present invention also disclose a mold changing system for a nonwoven bag forming equipment, wherein the first direction is perpendicular to the second direction.

[0023] Furthermore, the guiding component also includes an auxiliary guide that is parallel to and spaced apart from the second guide. One end of the first guide is disposed on the second guide and the other end is disposed on the auxiliary guide. The first guide can translate relative to the second guide and the auxiliary guide in a second direction.

[0024] Using the above technical solution, the movement of the pickup component can be decomposed into a first direction and a second direction. Since the first direction is perpendicular to the second direction, the movement of the pickup component in the first direction will not affect the position of the pickup component in the second direction, making it easier to control the position of the pickup component.

[0025] Furthermore, the auxiliary guides, which are parallel to and spaced apart from the second guide, can better guide the movement of the first guide in the second direction, thereby improving the stability of the first guide's movement in the second direction.

[0026] The embodiments of the present invention also disclose a mold changing system for a nonwoven bag forming equipment. The mold carrying unit further includes a base and a plurality of support components disposed on the base. The plurality of support components correspond one-to-one with a plurality of carrier seats, and each support component is disposed between a corresponding carrier seat and the base. The carrier seat is movably disposed on the support component.

[0027] Furthermore, the support component extends along a third direction, which is perpendicular to both the first and second directions. The carrier can move relative to the support component in the third direction to switch between the first and second positions.

[0028] When the load-bearing seat is in the first position, the mold loaded on the corresponding load-bearing seat can be directly supported by the base.

[0029] When the carrier is in the second position, in the third direction, the carrier and the pickup component on the guide component can be adapted to each other.

[0030] Using the above technical solution, each carrier is set on a corresponding support component, and the carrier can move along a third direction on the corresponding support component. When the carrier is in the first position, the mold loaded on the corresponding carrier can be directly supported by the base, reducing the burden of loading the mold on the carrier and ensuring the loading stability of the mold. When the carrier is in the first position, in the third direction, the carrier and the picking component on the guide component can be adapted to each other, so that the picking component can load the mold onto the carrier. Of course, it is also convenient for the picking component to pick up the mold loaded on the carrier.

[0031] The embodiments of the present invention also disclose a mold changing system for a nonwoven bag forming equipment, wherein multiple bearing seats are arranged in pairs on both sides of a first guide member and respectively located at both ends of a second guide member.

[0032] Furthermore, each support component is equipped with a third drive unit that drives the corresponding support seat to move in a third direction, and the third drive unit is electrically connected to the control unit.

[0033] Using the above technical solution, multiple carrier seats are arranged in pairs on both sides of the first guide member and respectively located at both ends of the second guide member. The picking component loads the disassembled mold onto one of the carrier seats and picks up the mold to be replaced from the carrier seat at the other end. The picking component only needs to move along the second direction to move from the carrier seat in the unloaded state to the carrier seat in the loaded state, which simplifies the movement path of the picking component. In addition, the carrier seats are located at both ends of the second guide member, and there is a wide distance between them, which avoids the mold from colliding with the other carrier seat when it is loaded onto one carrier seat.

[0034] The present invention also discloses a mold changing system for a nonwoven bag forming equipment. The picking component includes a mounting component connected to a guide component and a picking component having a picking part. The picking part is used to pick up the mold. An angle adjustment component is provided between the picking component and the mounting component. The angle adjustment component can drive the picking component to rotate relative to the mounting component about an axis parallel to a third direction.

[0035] Using the above technical solution, the mounting component is connected to the guide component, which enables the entire pickup component to move along the path on the guide component. The pickup component then picks up the mold through the pickup part. An angle adjustment component provided between the pickup component and the mounting component can be linked to rotate the pickup component relative to the mounting component around an axis parallel to a third direction, ensuring that the pickup part on the pickup component can be aligned with the mold to be picked up.

[0036] The present invention also discloses a mold changing system for a nonwoven bag forming equipment. The mounting component and the picking component are both configured as plate-like structures stacked along a third direction. An angle adjustment component is disposed on the mounting component and is connected to the picking component via a transmission.

[0037] The mounting component has a groove on the side opposite to the pickup component that is adapted to and connected to the first guide component, and the pickup part of the pickup component is configured as a pickup groove adapted to the outer wall of the mold.

[0038] The mounting component is on the guide assembly and is located at the mold connection position of the mold receiving assembly. The angle adjustment component is linked to the rotation of the pickup component so that the pickup slot faces the mold receiving assembly.

[0039] The mounting component is positioned on the guide assembly and in the corresponding position on the carrier. The angle adjustment component rotates in conjunction with the pickup component so that the pickup slot faces the carrier.

[0040] Using the above technical solution, since both the mounting component and the pickup component are set as plate-like structures stacked along a third direction, when the mounting component moves along the guide assembly, the pickup slot on the pickup component is always in a plane perpendicular to the third direction, that is, perpendicular to the height direction of the mold. The mold can be accurately embedded in the pickup slot, thus enabling the pickup component to pick up the mold well. Furthermore, the angle adjustment component can rotate the pickup component in conjunction with the angle adjustment component, ensuring that the pickup slot faces the mold being picked up when the pickup component picks up the mold, thus ensuring the accuracy of mold picking.

[0041] The present invention also discloses a mold changing system for a nonwoven bag forming equipment, wherein multiple protrusions are provided at intervals along the circumferential direction on the outer side wall of the mold, and multiple limiting parts are formed at corresponding positions on the outer periphery of the pickup slot for the pickup component.

[0042] The outer wall of the mold is embedded in the pickup groove, and multiple protrusions abut against the pickup part and are located in the corresponding limiting part on the outer periphery of the pickup groove.

[0043] By adopting the above technical solution, when the pickup part picks up the mold, the mold is embedded in the pickup groove. Multiple protrusions on the outer wall of the mold cooperate with the limiting part on the pickup part located on the outer periphery of the pickup groove, thereby improving the stability of the pickup part in picking up the mold and reducing the risk of the mold shaking relative to the pickup part during the transportation of the mold.

[0044] The embodiments of the present invention also disclose a mold changing system for a nonwoven bag forming equipment, wherein one end of the mold forms a locking part, and a plurality of positioning parts are arranged at intervals around the locking part.

[0045] Furthermore, on one side of the support seat along the second direction, a locking member corresponding to the locked part is provided, as well as a locking recess provided corresponding to a plurality of positioning parts of the support seat.

[0046] The picking component linkage mold moves along the second direction toward the carrier seat which is in an unloaded state. Multiple positioning parts of the mold are embedded in the corresponding locking recesses, and the locking component locks the locked part on the mold. The carrier seat is connected to the mold from one end of the mold.

[0047] By employing the above technical solution, the locking components on the support base corresponding to the locked portion of the mold, and the locking recesses corresponding to the multiple positioning portions of the mold, ensure a high connection strength between the support base and the mold when loading the mold, thus ensuring the loading stability of the mold by the support base. Furthermore, the support base fixes the mold through a connection structure on the mold that connects to the mold receiving assembly, eliminating the need for additional connection structures on the mold itself.

[0048] The embodiments of the present invention also disclose a mold changing system for a nonwoven bag forming equipment, wherein the first guide, the second guide, and the support assembly are all slide rails.

[0049] Furthermore, the first direction and the second direction are two directions that extend horizontally and are perpendicular to each other, while the third direction is a direction that extends vertically.

[0050] By adopting the above technical solution, the first guide, the second guide, and the support assembly are all slide rails, which ensures the accuracy of the movement direction of the picking component and simplifies the path for transporting the picking component to the mold. Furthermore, the first and second directions are horizontally extending and perpendicular to each other, while the third direction is vertically extending. This allows the movement paths formed on the guide and support components to constitute a three-dimensional coordinate system. This design enables the picking component and the carrier to maintain high stability and accuracy during movement.

[0051] The embodiments of the present invention also disclose a mold changing system for a nonwoven bag forming equipment, wherein each mold has a marking corresponding to its model number.

[0052] The mold changing system also includes a mold identification unit electrically connected to the control unit; the mold identification unit includes marking detection elements respectively disposed on the mold receiving assembly and the carrier.

[0053] Using the above technical solution, the mold identification unit includes marking detection elements respectively set on the mold receiving component and the carrier seat. The detected mold model is fed back to the control unit, and the user can obtain the model of each mold and quickly determine the carrier seat where the mold that matches the desired bag type is located.

[0054] The present invention also discloses a mold changing system for a nonwoven bag forming equipment. The user inputs the desired bag type, and the control unit matches the input desired bag type with the mold model on the mold receiving component fed back by the mold identification unit.

[0055] If a match is found, then proceed with production;

[0056] If no match is found, the control unit further matches the desired bag type with the mold models on multiple carriers fed back by the mold identification unit, and identifies the mold installed on one of the carriers that matches the desired bag type as the mold to be replaced.

[0057] Using the above technical solution, the user inputs the desired bag type, and the control unit matches the input bag type with the mold model on the mold receiving component fed back by the mold identification unit to determine whether a mold change is needed. If a mold change is needed, the control unit further matches the desired bag type with the mold models on multiple carriers fed back by the mold identification unit to select a mold that matches the desired bag type and determine the mold to be replaced. The control unit plans the movement path of the picking component according to the carrier on which the mold to be replaced is loaded, and controls the picking component to perform the mold change.

[0058] This mold-changing system does not require user operation; the control unit can directly determine the desired bag type based on the input, offering the advantage of high automation.

[0059] The present invention also discloses a mold changing system for a nonwoven bag forming equipment, wherein the mold receiving assembly and multiple bearing seats are each provided with a mold position detection element, and the position detection element is electrically connected to the control unit.

[0060] By adopting the above technical solution, the position detection elements set on multiple support seats can, on the one hand, detect whether the support seat is loaded with a mold; on the other hand, they can detect whether the mold is loaded on the support seat in a predetermined position, thus ensuring the loading accuracy between the support seat and the mold.

[0061] The embodiments of the present invention also disclose a mold changing system for a nonwoven bag forming equipment, wherein the position detection element includes any one of a photoelectric sensor, a proximity switch, or an ultrasonic sensor.

[0062] By adopting the above technical solution, the position of the mold can be accurately detected by any one of photoelectric sensors, proximity switches or ultrasonic sensors, and it has strong anti-interference ability to avoid the detection results being affected by other environmental factors.

[0063] Embodiments of the present invention also disclose a mold changing system for a nonwoven bag forming equipment, which further includes an alarm electrically connected to the control unit.

[0064] The picking component moves along a predetermined path to move the mold to the corresponding position of the mold receiving component or the carrier. If the corresponding position detection element does not send a signal to the control unit that the mold has been detected, the control unit controls the mold changing unit to stop working and controls the alarm to sound an alarm.

[0065] By adopting the above technical solution, an alarm that is electrically connected to the control unit can be set up to alert the user when the picking component moves along a predetermined path but fails to transport the mold to the corresponding carrier, i.e., when a malfunction occurs. The control unit will then control the mold sliding unit to stop working to prevent the picking component from moving further and to avoid more serious damage.

[0066] The beneficial effects of this invention are as follows:

[0067] This invention discloses a mold-changing system for a nonwoven bag forming equipment. The forming unit of the nonwoven bag forming equipment has a mold receiving component, which is detachably connected to a mold and linked to the mold to compress the nonwoven fabric into a cuboid. After the user inputs the desired bag type, the mold-changing system determines the mold that needs to be connected to the mold receiving component and matches the desired bag type. If the mold matching the desired bag type is located on one of multiple support seats, the control unit drives the pick-up component to the mold receiving component, removes the existing mold from the mold receiving component and transports it to an unloaded support seat in the mold support unit, and drives the pick-up component to pick up the mold matching the desired bag type from the support seat and transport it to the mold receiving component. The mold receiving component connects to the mold matching the desired bag type and performs production. The mold-changing system enables efficient mold replacement, which is beneficial for the nonwoven bag forming equipment to produce bags of different models.

[0068] Furthermore, during the mold changing process, the picking component moves along the guide component between the mold receiving component and multiple support seats. For example, during the mold unloading process, the first drive component drives the picking component to move the mold removed from the mold receiving component along the first guide component to the mold support unit. Further, the second drive component drives the first guide component to move along the second guide component, so that the picking component on the first guide component corresponds to the support seat in the unloaded state, and the unloaded support seat assembles the removed mold. During the mold loading process, the second drive component drives the first guide component to move along the second guide component, so that the picking component on the first guide component corresponds to the support seat loading the mold to be replaced. The picking component picks up the mold to be replaced, and then the second drive component drives the first guide component to move along the second guide component, so that one end of the first guide component corresponds to the mold receiving component. The first drive component drives the picking component to transport the mold to be replaced along the first guide component to the mold connection position of the mold receiving component, and the mold receiving component connects the mold to be replaced, completing the mold changing process. Attached Figure Description

[0069] Figure 1 is a schematic diagram of a mold changing system for a nonwoven bag forming equipment provided in an embodiment of the present invention.

[0070] Figure 2 is another schematic diagram of the mold changing system for a nonwoven bag forming equipment provided in an embodiment of the present invention;

[0071] Figure 3 is a flowchart of the mold changing system for a nonwoven bag forming equipment provided in an embodiment of the present invention.

[0072] Figure 4 is a schematic diagram of the assembly of the mold changing system for the nonwoven bag forming equipment provided in the embodiment of the present invention onto the nonwoven bag forming equipment.

[0073] Figure 5 is a structural schematic diagram of the mold changing system for a nonwoven bag forming equipment provided in an embodiment of the present invention, assembled in the nonwoven bag forming equipment from another perspective.

[0074] Figure 6 is a schematic diagram of the mold changing system for a nonwoven bag forming equipment provided in an embodiment of the present invention.

[0075] Figure 7 is a schematic diagram of the mold changing unit of the mold changing system for nonwoven bag forming equipment provided in an embodiment of the present invention.

[0076] Figure 8 is a partial schematic diagram of the picking component of the mold changing unit of the mold changing system for a nonwoven bag forming equipment provided in an embodiment of the present invention.

[0077] Figure 9 is a schematic diagram of the structure of the picking component of the mold changing unit of the mold changing system for nonwoven bag forming equipment provided in an embodiment of the present invention.

[0078] Figure 10 is a schematic diagram of the mold structure of the mold changing system for a nonwoven bag forming equipment provided in an embodiment of the present invention.

[0079] Figure 11 is a partial schematic diagram of the support seat (in the loading state) of the mold support unit of the mold changing system for nonwoven bag forming equipment provided in an embodiment of the present invention.

[0080] Figure 12 is a partial schematic diagram of the bearing seat (in an unloaded state) of the mold bearing unit of the mold changing system for nonwoven bag forming equipment provided in an embodiment of the present invention.

[0081] Figure 13 is a partial schematic diagram from another perspective of the bearing seat (in an unloaded state) of the mold bearing unit of the mold changing system for a nonwoven bag forming equipment provided in an embodiment of the present invention.

[0082] Explanation of reference numerals in the attached drawings: 10. Mold changing system for nonwoven bag forming equipment; 100. Mold carrying unit; 110. Carrier seat; 111. Locking element; 112. Locking recess; 113. Position detection element; 120. Support assembly; 130. Third drive element; 101. Mold; 102. Protrusion; 103. Locked part; 104. Positioning part; 200. Mold changing unit; 210. Pick-up assembly; 211. Mounting element; 212. Pick-up element; 2120. Pick-up part; 2121. Limiting part; 213. Angle adjusting element; 220. Guide assembly; 221. First guide element; 222. Second guide element; 223. First drive element; 224. Second drive element; 225. Auxiliary guide element; 300. Control unit; 400. Mold identification unit; 20. Mold receiving assembly; Y, first direction; X, second direction; Z, third direction. Detailed Implementation

[0083] The production of nonwoven stand-up pouches generally relies on a one-time forming process using a stand-up pouch forming machine. In this process, the mold lifting device plays a crucial role, enabling the mold to press the flat nonwoven fabric into the required cuboid shape. However, facing diverse size and specification demands in the market, traditional molds, due to their large size, considerable weight, and fixed structure, require frequent mold changes when switching to produce stand-up pouches of different sizes. This not only increases production costs but also severely impacts production efficiency and flexibility due to the complexity and time-consuming nature of mold changes.

[0084] Existing technologies also include adjustable mold assemblies where the stripper plate and mold are detachably connected. This allows the processing dimensions of the mold assembly to be adjusted simply by replacing the stripper plate, thus quickly adapting to the production needs of different sized stand-up pouches. However, such designs still face challenges in practical applications: due to the compact internal space and dense components of the forming machine, the installation and removal of the stripper plate without disassembling the entire mold is particularly difficult, limiting further improvements in production efficiency.

[0085] To address this, the present invention provides a mold-changing system for a nonwoven bag forming equipment, comprising a mold-carrying unit, a mold-changing unit, and a control unit. The mold-carrying unit has multiple support seats, each of which can switch between a loaded state with a mold and an unloaded state without a mold. The mold-changing unit includes a pickup component, which can be connected to the mold and move the mold between a mold-receiving component and any of the support seats. After the user inputs the desired bag type, the mold-changing system determines the mold that needs to be connected to the mold-receiving component and matches the desired bag type. If the mold matching the desired bag type is located on one of the multiple support seats, the control unit drives the pickup component to the mold-receiving component, removes the existing mold from the mold-receiving component, and transports it to the unloaded support seat in the mold-carrying unit. The control unit then drives the pickup component to pick up the mold matching the desired bag type from the support seat and transport it to the mold-receiving component. The mold-receiving component connects the mold and performs production. This mold-changing system enables efficient mold replacement, thereby improving the working efficiency of the nonwoven bag production equipment.

[0086] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0087] As shown in Figures 1 and 3, an embodiment of the present invention provides a mold-changing system 10 for a nonwoven bag forming equipment. The nonwoven bag forming equipment includes a forming unit for forming the bag body of a nonwoven bag, and a mold receiving assembly 20 is provided within the forming unit and is detachably connected to a mold 101 for forming the bag body. This mold-changing system 10 includes:

[0088] The mold support unit 100 has multiple support seats 110, each of which can switch between a loaded state with a mold 101 and an unloaded state without a mold 101. It should be noted that the number of support seats 110 can be two, three, four, five or other numbers, and this embodiment does not make a specific limitation on this.

[0089] The mold 101, which is mounted on the mold receiving component 20, can squeeze the non-woven fabric under the drive of the mold receiving component 20, so that the non-woven fabric is compressed into a cuboid, thereby forming the specific shape of the bag. As for the specific forming component that squeezes the non-woven fabric onto the mold 101, those skilled in the art can design it according to the actual situation and specific needs, and the present invention does not make specific limitations in this regard.

[0090] The support seat 110 is used to load the mold 101 in an idle state. Each support seat 110 loads a different model of mold 101. Different models of mold 101 differ in at least one of the length, width and thickness dimensions. Of course, the shape of the mold 101 is related to the specific bag type to be produced. Those skilled in the art can design it according to the actual situation and specific needs. This embodiment does not make specific limitations in this regard.

[0091] However, the structure on each mold 101 that is connected to the mold receiving assembly 20 is the same, ensuring that each mold 101 can be connected to the mold receiving assembly 20.

[0092] It should be noted that, in order to ensure that the mold 101 can be stably assembled on the support 110 without requiring modifications to the existing mold 101, each support 110 fixes the mold 101 through a structure on the mold 101 that connects to the mold receiving assembly 20. Regarding the structure connecting the mold 101 and the mold receiving assembly 20, those skilled in the art can design it according to actual conditions and specific needs; this embodiment does not impose specific limitations on it.

[0093] The mold changing unit 200 includes a pickup component 210, which can be connected to the mold 101 and drive the mold 101 to move between the mold receiving component 20 and any of the support seats 110.

[0094] As the name suggests, the mold changing unit 200 is used to change the mold 101. The picking component 210 of the mold changing unit 200 must have at least two functions: first, picking up the mold 101; second, moving the mold 101 between the mold receiving component 20 and any of the carriers 110.

[0095] Regarding the function of the pickup component 210 in picking up the mold 101, the pickup component 210 can fix the mold 101 by clamping, suspending or lifting. As for the specific way of picking up the mold 101, those skilled in the art can design it according to the actual situation and specific needs. This embodiment does not make specific limitations in this regard.

[0096] Regarding the function of the pickup component 210 moving between the mold receiving component 20 and any of the support seats 110, in one embodiment, a guide component 220 can be provided to guide the pickup component 210, thereby enabling the pickup component 210 to move along the guide component 220 between the mold receiving component 20 and the support seat 110, which has the advantage of easy control. In another embodiment, a robotic arm can be provided to move the pickup component 210 between the mold receiving component 20 and the support seat 110 in conjunction with the robotic arm. The pickup component 210 has the advantage of high degree of freedom of movement. Of course, those skilled in the art can design the structure for realizing the movement of the pickup component 210 between the mold receiving component 20 and the support seat 110 according to the actual situation and specific needs. This embodiment does not make specific limitations in this regard.

[0097] The control unit 300 is electrically connected to the mold receiving assembly 20, the mold carrying unit 100, and the mold changing unit 200. The control unit 300 can be a controller composed of one or more of the NOVA motion control chip, the UC384X series control chip, or the TOP series control chip. Those skilled in the art can design it according to actual conditions and specific needs; this embodiment does not impose specific limitations on it.

[0098] More specifically, the control unit 300 also includes a display and an input device (keyboard or mouse) electrically connected to the control unit 300. The user can input the pre-production bag pattern through the input device. The controller receives the instructions from the input device, displays the relevant information on the display, and controls the mold changing unit 200 to change the mold.

[0099] The following describes the process of the control unit 300 controlling the mold changing unit 200 to change the mold.

[0100] The user inputs the desired bag type, and the control unit 300 determines the mold 101 that needs to be connected to the mold receiving assembly 20 based on the input desired bag type. The control unit 300 then drives the pickup assembly 210 to the mold receiving assembly 20, removes the existing mold 101 from the mold receiving assembly 20, and transports it to the unloaded support seat 110 in the mold carrying unit 100. Furthermore, the control unit 300 drives the pickup assembly 210 to pick up the mold 101 that matches the desired bag type from the loaded support seat 110 in the mold carrying unit 100, transports the mold 101 to the mold receiving assembly 20, and connects the mold 101 to the mold receiving assembly 20.

[0101] It should be noted that the forming unit of the nonwoven bag forming equipment has a mold receiving component 20, which is detachably connected to the mold 101 and moves in conjunction with the mold 101 to extrude the nonwoven fabric, so that the nonwoven fabric is compressed into a cuboid. After the user inputs the desired bag type, the mold changing system 10 determines the mold 101 that needs to be connected to the mold receiving assembly 20 based on the input desired bag type. If the mold 101 that matches the desired bag type is located on the mold receiving assembly 20, the process ends. If the mold 101 that matches the desired bag type is located on one of the multiple carrier seats 110, the control unit 300 drives the pickup assembly 210 to the mold receiving assembly 20, removes the existing mold 101 from the mold receiving assembly 20 and transports it to the unloaded carrier seat 110 in the mold carrying unit 100, and drives the pickup assembly 210 to pick up the mold 101 that matches the desired bag type from the carrier seat 110 and transport it to the mold receiving assembly 20. The mold receiving assembly 20 connects to the mold 101 that matches the desired bag type and begins production.

[0102] This mold-changing system 10 can use the pick-up component 210 to replace multiple molds 101 mounted on the support 110 and on the mold receiving component 20. Compared with the prior art, which involves installing or removing stripper plates on the molds or manually disassembling and assembling the molds, this system reduces the difficulty of mold changing, saves time and effort, and thus has the advantage of high mold-changing efficiency. Furthermore, the multiple molds 101 are respectively mounted on the support 110, which on the one hand can effectively fix the molds 101 in the idle state; on the other hand, it facilitates the pick-up component 210 to pick up the molds 101 in the idle state.

[0103] Furthermore, as shown in FIG2, in this embodiment, the mold changing system 10 further includes a mold identification unit 400 electrically connected to the control unit 300. The mold identification unit 400 includes marking detection elements (not shown in the figure) respectively disposed on the mold receiving assembly 20 and the carrier 110.

[0104] This mold-changing system 10 uses a mold identification unit 400, which includes marking detection elements respectively disposed on the mold receiving assembly 20 and the carrier 110. The system detects the model of the mold 101 and feeds it back to the control unit 300. The user can then obtain the model of each mold 101 and quickly determine the location of the mold 101 that matches the desired bag type. It should be noted that the markings on the mold 101 can be barcodes, QR codes, or other markings commonly used in the art. The marking detection elements can be barcode scanners. Those skilled in the art can design such systems according to actual conditions and specific needs; this embodiment does not impose specific limitations on this.

[0105] Furthermore, as shown in Figure 3, during use, the user inputs the desired bag type, and the control unit 300 matches the input desired bag type with the model of the mold 101 on the mold receiving component 20 fed back by the mold identification unit 400.

[0106] If a match is found, then proceed with production;

[0107] If no match is found, the control unit 300 further matches the desired bag type with the model of the mold 101 on the multiple carrier seats 110 fed back by the mold identification unit 400, and identifies the mold 101 installed on one of the carrier seats 110 that matches the desired bag type as the mold 101 to be replaced.

[0108] The user inputs the desired bag type. The control unit 300 matches the input desired bag type with the model of the mold 101 on the mold receiving component 20 fed back by the mold identification unit 400 to determine whether a mold change is needed. If a mold change is needed, the control unit 300 further matches the desired bag type with the model of the mold 101 on multiple carrier seats 110 fed back by the mold identification unit 400 to select the mold 101 that matches the desired bag type and determine the mold 101 to be replaced. The control unit 300 plans the movement path of the picking component 210 according to the carrier seat 110 on which the mold 101 to be replaced is loaded, and controls the picking component 210 to perform the mold change.

[0109] This mold-changing system 10 does not require user operation. The control unit 300 can directly determine the desired bag type based on the input, which has the advantage of high automation.

[0110] The structure and working principle of the mold changing unit 200 will be explained in detail below.

[0111] In one embodiment, as shown in Figures 4-6, the mold changing unit 200 includes a guide component 220, and a pickup component 210 is disposed on the guide component 220.

[0112] The guiding component 220 includes a first guide 221 extending along a first direction Y between the mold receiving component 20 and the mold carrying unit 100, and a second guide 222 extending along a second direction X through the opening of each carrier seat 110 in the mold carrying unit 100; wherein the first direction Y and the second direction X intersect each other, and the first guide 221 is disposed on the second guide 222 and is movable relative to the second guide 222 along the second direction X, and the picking component 210 is movably disposed on the first guide 221 along the first direction Y.

[0113] Furthermore, as shown in FIG7, the guide component 220 also includes a first drive member 223 and a second drive member 224, both of which are electrically connected to the control unit 300; wherein, the first drive member 223 drives the pickup component 210 to move along the first direction Y, and the second drive member 224 drives the first guide member 221 to move along the second direction X.

[0114] During mold changing, the pickup assembly 210 moves along the guide assembly 220 between the mold receiving assembly 20 and multiple support seats 110. For example, during mold unloading, the first drive member 223 drives the pickup assembly 210 to move the mold 101 removed from the mold receiving assembly 20 along the first guide member 221 to the mold support unit 100. Further, the second drive member 224 drives the first guide member 221 to move along the second guide member 222, so that the pickup assembly 210 on the first guide member 221 corresponds to the unloaded support seat 110, and the unloaded support seat 110 loads the removed mold. During mold loading, the second drive member 224 drives the pickup assembly 210 to move along the second guide member 222, so that the pickup assembly 210 on the first guide member 221 corresponds to the unloaded support seat 110, and the unloaded support seat 110 loads the removed mold. The first guide 221 moves along the second guide 222, so that the picking component 210 on the first guide 221 corresponds to the carrier 110 on which the mold to be replaced 101 is loaded. The picking component 210 picks up the mold to be replaced 101. Then the second drive 224 drives the first guide 221 to move along the second guide 222, so that one end of the first guide 221 corresponds to the mold receiving component 20. The first drive 223 drives the picking component 210 to transport the mold to be replaced 101 along the first guide 221 to the mold connection position of the mold receiving component 20, and the mold receiving component 20 connects the mold to be replaced 101 to complete the mold replacement.

[0115] Therefore, the movement path of the pickup component 210 on the first guide 221 belongs to both the demolding path and the mold loading path, while the movement path of the pickup component 210 on the second guide 222 in conjunction with the first guide 221 toward the unloaded support seat 110 belongs to the demolding path; the movement path of the pickup component 210 on the second guide 222 from the support seat 110 loaded with the mold to be replaced toward the position corresponding to the mold receiving component 20 belongs to the mold loading path.

[0116] Furthermore, in this embodiment, the first direction Y is perpendicular to the second direction X.

[0117] Furthermore, as shown in Figures 4-7, the guide assembly 220 also includes an auxiliary guide 225 that is parallel to and spaced apart from the second guide 222. One end of the first guide 221 is disposed on the second guide 222, and the other end is disposed on the auxiliary guide 225. The first guide 221 can translate relative to the second guide 222 and the auxiliary guide 225 along the second direction X. It should be noted that, in this embodiment, the first guide 221, the second guide 222, and the auxiliary guide 225 are all provided with slide rails. The first guide 221 is provided with a slider that cooperates with the slide rail on the second guide 222, and the pickup assembly 210 is provided with a slider that cooperates with the slide rail on the first guide 221.

[0118] In this embodiment, the movement of the pickup component 210 can be decomposed into a first direction Y and a second direction X. Since the first direction Y is perpendicular to the second direction X, the movement of the pickup component 210 in the first direction Y will not affect the position of the pickup component 210 in the second direction X, making it easier to control the position of the pickup component 210.

[0119] Furthermore, the auxiliary guide 225, which is parallel to and spaced apart from the second guide 222, can better guide the movement of the first guide 221 along the second direction X, thereby improving the stability of the first guide 221 in the second direction X.

[0120] Further, as shown in Figures 7 and 8, the pickup assembly 210 includes a mounting member 211 connected to the guide assembly 220 and a pickup member 212 having a pickup section 2120 for picking up the mold 101. An angle adjustment member 213 is provided between the pickup member 212 and the mounting member 211. The angle adjustment member 213 can drive the pickup member 212 to rotate relative to the mounting member 211 about an axis parallel to the third direction Z.

[0121] In this embodiment, the mounting member 211 is connected to the guide assembly 220, enabling the entire pickup assembly 210 to move along the path on the guide assembly 220. The pickup member 212 picks up the mold 101 through the pickup part 2120. The angle adjustment member 213 provided between the pickup member 212 and the mounting member 211 can drive the pickup member 212 to rotate relative to the mounting member 211 about an axis parallel to the third direction Z, ensuring that the pickup part 2120 on the pickup member 212 can be aligned with the mold 101 to be picked up.

[0122] Wherein, the first direction Y and the second direction X are two directions that extend horizontally and are perpendicular to each other, and the third direction Z is a direction that extends vertically.

[0123] More specifically, as shown in Figure 8, in this embodiment, both the mounting component 211 and the pickup component 212 are configured as plate-like structures stacked along the third direction Z, and the angle adjustment component 213 is disposed on the mounting component 211 and is connected to the pickup component 212 in a transmission manner.

[0124] The mounting member 211 has a groove on the side opposite to the pickup member 212 that is adapted to and connected to the first guide member 221, and the pickup part 2120 of the pickup member 212 is configured as a pickup groove adapted to the outer side wall of the mold 101.

[0125] Mounting component 211 is on guide component 220 and located at the mold connection position of mold receiving component 20. Angle adjustment component 213 rotates in conjunction with pickup component 212 so that pickup slot faces mold receiving component 20.

[0126] Mounting component 211 is on guide component 220 and in the corresponding position on carrier 110. Angle adjustment component 213 rotates in conjunction with pickup component 212 so that pickup slot faces carrier 110.

[0127] Since both the mounting component 211 and the pickup component 212 are plate-like structures stacked along the third direction Z, when the mounting component 211 moves along the guide assembly 220, the pickup slot on the pickup component 212 is always in a plane perpendicular to the third direction Z, that is, perpendicular to the height direction of the mold 101. The mold 101 can be accurately embedded in the pickup slot, thereby enabling the pickup component 212 to pick up the mold 101 well. The angle adjustment component 213 can rotate the pickup component 212 in conjunction with it, ensuring that the pickup slot is facing the mold 101 being picked up when the pickup component 212 picks up the mold 101, ensuring the accuracy of picking up the mold 101.

[0128] The sliding plate is provided with a first driving member 223 and an angle adjusting member 213. A rack extending along the first direction Y is provided on the first guide member 221. The output end of the first driving member 223 is connected to a gear through belt drive, and the gear is connected to the rack drive. The angle adjusting member 213 is connected to the pickup member 212 through drive. The angle adjusting member 213 drives the pickup member 212 to rotate relative to the mounting member 211 around the third direction Z to adjust the opening orientation of the pickup slot.

[0129] The second driving member 224 is disposed at one end of the first guide member 221 near the auxiliary guide member 225. The auxiliary guide member 225 is provided with a rack extending along the second direction X. The output end of the second driving member 224 is connected to a gear via belt drive, and the gear is connected to the rack drive. It should be noted that in this embodiment, the first driving member 223, the second driving member 224, and the angle adjustment member 213 are all configured as servo motors. Of course, those skilled in the art can design the driving components and their transmission structures according to actual conditions and specific needs, and this embodiment does not impose specific limitations on them.

[0130] Furthermore, as shown in Figures 9 and 10, a plurality of protrusions 102 are provided at circumferential intervals on the outer wall of the mold 101, and a plurality of limiting portions 2121 are formed at corresponding positions on the outer periphery of the pickup groove of the pickup member 212. It should be noted that, in this embodiment, the protrusions 102 provided on the outer wall of the mold 101 can be outwardly extending pins. Of course, the present invention does not specifically limit the specific structure of the protrusions 102.

[0131] The outer wall of the mold 101 is embedded in the pickup groove, and multiple protrusions 102 abut against the pickup part 212 and are located in the limiting part 2121 corresponding to the outer periphery of the pickup groove.

[0132] When the pickup component 212 picks up the mold 101, the mold 101 is embedded in the pickup groove. The multiple protrusions 102 on the outer side wall of the mold 101 cooperate with the limiting part 2121 on the pickup component 212, which is located on the outer periphery of the pickup groove. This improves the stability of the pickup component 212 in picking up the mold 101 and reduces the risk of the mold 101 shaking relative to the pickup component 212 during the transportation of the mold 101.

[0133] In another embodiment, a plurality of blind holes are provided at Z-intervals along the outer wall of the mold 101 in a direction perpendicular to the third direction. The pickup member 212 is provided with a plurality of limiting rods corresponding to the blind holes. When the pickup member 212 picks up the mold 101, the limiting rods on the pickup member 212 extend into the corresponding blind holes and transport the mold 101 along the guide assembly 220 in a suspended manner. The number of blind holes can be two, three, four, or other numbers. Those skilled in the art can design according to actual conditions and specific needs; this embodiment does not impose a specific limitation on this.

[0134] In another embodiment, the structure of the mold 101 does not require additional connection design. The pick-up member 212 has a groove that matches the bottom of the mold 101. When picking up the mold 101, the bottom of the mold 101 is embedded in the groove, the mold receiving component 20 disconnects from the mold 101, and the pick-up member 212 carries the mold 101 along the guide component 220 in a lifting manner.

[0135] Of course, the structure of the specific pickup mold 101 of the pickup component 210 is not limited to the three structures mentioned above. Those skilled in the art can design it according to the actual situation and specific needs. This embodiment does not make specific limitations in this regard.

[0136] Furthermore, in another embodiment, the pickup component 210 is driven by a robotic arm, which has at least a first robotic arm and a second robotic arm. One end of the first robotic arm is connected to one end of the second robotic arm via a universal joint. The pickup component 210 is connected to the other end of the second robotic arm via a universal joint. The second robotic arm swings relative to the first robotic arm, thereby allowing the pickup component 210 to move between the mold receiving component 20 and the plurality of carrier seats 110. The pickup component 210 can swing relative to the end of the second robotic arm, thereby aligning the pickup component 210 with the mold 101.

[0137] Of course, the structure of the linkage pickup component 210 moving between the mold receiving component 20 and the multiple carrier seats 110 is not limited to the two structures mentioned above. Those skilled in the art can design according to actual conditions and specific needs. This embodiment does not make specific limitations in this regard.

[0138] The specific structure and working principle of the mold support unit 100 will be explained in detail below.

[0139] As shown in Figures 4-6, in this embodiment, the mold support unit 100 includes a base (not shown) and a plurality of support components 120 disposed on the base. The plurality of support components 120 correspond one-to-one with a plurality of support seats 110, and each support component 120 is disposed between a corresponding support seat 110 and the base. Furthermore, the support component 120 extends along a third direction Z, and the support seat 110 is movably disposed on the support component 120.

[0140] The third direction Z is perpendicular to both the first direction Y and the second direction X. The support 110 can move relative to the support component 120 in the third direction Z to switch between the first position and the second position.

[0141] When the support seat 110 in the loading state is in the first position, the mold 101 loaded on the corresponding support seat 110 can be directly supported by the base. It should be noted that the base is used to support the mold 101, thereby reducing the burden on the support seat 110 to support the mold 101. Regarding its specific structure, this embodiment does not make specific limitations. Of course, when the support seat 110 in the loading state is in the first position, the mold 101 loaded on the corresponding support seat 110 can be directly placed on the ground, that is, on the ground, the part supporting the mold 101 constitutes the base.

[0142] When the carrier 110 is in the second position, in the third direction Z, the carrier 110 and the pickup component 210 on the guide component 220 can be adapted to each other.

[0143] Each carrier 110 is mounted on a corresponding support component 120, and the carrier 110 can move along the third direction Z on the corresponding support component 120. When the carrier 110 is in the first position, the mold 101 loaded on the corresponding carrier 110 can be directly supported by the base, reducing the burden of loading the mold 101 on the carrier 110, and ensuring the loading stability of the mold 101. When the carrier 110 is in the first position, in the third direction Z, the carrier 110 and the picking component 210 on the guide component 220 can be adapted to each other, so that the picking component 210 can load the mold 101 onto the carrier 110. Of course, the picking component 210 can also pick up the mold 101 loaded on the carrier 110.

[0144] More specifically, in this embodiment, multiple support seats 110 are arranged in pairs on both sides of the first guide 221 and at both ends of the second guide 222.

[0145] Furthermore, as shown in Figures 4-6, each support component 120 is provided with a third drive member 130 that drives the corresponding carrier seat 110 to move along the third direction Z. The third drive member 130 is electrically connected to the control unit 300. It should be noted that the third drive member 130 can be set as a servo motor, and the support component 120 is provided with a transmission belt extending along the third direction Z. Each carrier seat 110 is slidably connected to the transmission belt on the corresponding support component 120.

[0146] Multiple support seats 110 are arranged in pairs on both sides of the first guide 221 and at both ends of the second guide 222. The picking component 210 loads the disassembled mold 101 onto one of the support seats 110 and picks up the mold 101 to be replaced from the support seat 110 at the other end. The picking component 210 only needs to move along the second direction X to move from the unloaded support seat 110 to the loaded support seat 110, which simplifies the movement path of the picking component 210. In addition, the support seats 110 are located at both ends of the second guide 222 with a wide distance between them to avoid the mold 101 from colliding with the other support seat 110 when it is loaded onto one support seat 110.

[0147] In this embodiment, as shown in FIG10, a locking portion 103 is formed at one end of the mold 101, and a plurality of positioning portions 104 are provided at intervals around the locking portion 103.

[0148] Furthermore, as shown in Figures 11 and 12, the support 110 is provided with a locking member 111 corresponding to the locked part 103 and a locking recess 112 corresponding to a plurality of positioning parts 104 provided on one side along the second direction X.

[0149] Pick-up component 212 moves the linkage mold 101 along the second direction X toward the unloaded support seat 110. Multiple positioning parts 104 of the mold 101 are embedded in the corresponding locking recesses 112, and locking component 111 locks the locked part 103 on the mold 101. The support seat 110 is connected to the mold 101 from one end of the mold 101.

[0150] In this embodiment, the locking member 111 on the support 110, corresponding to the locked portion 103 of the mold 101, and the locking recesses 112 corresponding to the plurality of positioning portions 104 of the mold 101, ensure a high connection strength between the support 110 and the mold 101 when the mold 101 is loaded, thus ensuring the loading stability of the mold 101 by the support 110. Furthermore, the support 110 fixes the mold 101 through the connection structure on the mold 101 that connects to the mold receiving assembly 20, eliminating the need for additional connection structures on the mold 101.

[0151] Furthermore, the movement paths formed on the guide component 220 and the support component 120 constitute a three-dimensional coordinate system. This design enables the pickup component 210 and the carrier 110 to maintain high stability and accuracy during movement.

[0152] Specifically, in this embodiment, the locking part 103 includes a main locking pin disposed at one end of the mold 101, and the positioning part 104 includes two auxiliary locking pins symmetrically disposed relative to the main locking pin. The auxiliary locking pins have pins that connect to the mold 101 and pin heads disposed at the free ends of the pins.

[0153] The support 110 includes a support portion with a locking part and a connecting plate connected to the support portion and slidably connected to the transmission belt on the support assembly 120.

[0154] As shown in Figures 11 and 12, the locking member 111 includes a chuck disposed on the support plate and a locking cylinder for driving the chuck to clamp the main locking pin. The locking recess 112 includes locking grooves disposed at intervals on both sides of the locking cylinder along the first direction Y, corresponding to the auxiliary locking pin. The width of the locking groove is adapted to the rod diameter of the pin of the auxiliary locking pin. Furthermore, the locking groove extends along the second direction X and one end extends to the outer edge of the mounting plate.

[0155] When the mold 101 is loaded on the carrier 110, the mold 101 on the pickup assembly 210 is aligned with the carrier 110 in the second direction X. The pickup assembly 210 moves the mold 101 closer to the carrier 110 in the second direction X. Multiple auxiliary locking pins on the mold 101 are embedded in the corresponding locking grooves. The locking cylinder moves the chuck downward and clamps the locking pins to complete the loading of the mold 101.

[0156] Furthermore, as shown in FIG13, in this embodiment, the mold receiving assembly 20 and the plurality of bearing seats 110 are all provided with position detection elements 113 for detecting the mold 101. The position detection elements 113 are electrically connected to the control unit 300. Through the position detection elements 113 provided on the plurality of bearing seats 110, on the one hand, they can be used to detect whether the bearing seat 110 is loaded with the mold 101; on the other hand, they can be used to detect whether the mold 101 is loaded on the bearing seat 110 in a predetermined position, so as to ensure the loading accuracy between the bearing seat 110 and the mold 101.

[0157] Specifically, the position detection element 113 includes any one of a photoelectric sensor, a proximity switch, or an ultrasonic sensor, which can accurately detect the position of the mold 101 and has strong anti-interference ability to avoid the detection results being affected by other environmental factors.

[0158] Furthermore, in this embodiment, the mold changing system 10 also includes an alarm (not shown) electrically connected to the control unit 300.

[0159] The picking component 210 moves along a predetermined path to move the mold 101 to the mold connection position of the mold receiving component 20 or the corresponding position of the support 110. If the corresponding position detection element 113 does not send a signal to the control unit 300 indicating that the mold 101 has been detected, the control unit 300 controls the mold changing unit 200 to stop working and controls the alarm to sound an alarm.

[0160] In this embodiment, by setting an alarm electrically connected to the control unit 300, an alarm can be triggered to remind the user when the picking component 210 fails to transport the mold 101 to the corresponding carrier 110 along a predetermined path, i.e., when a malfunction occurs. The control unit 300 also controls the mold changing unit 200 to stop working, preventing the picking component 210 from continuing to move and avoiding more serious damage.

[0161] In summary, the present invention provides a mold changing system 10 for nonwoven bag production equipment. The mold changing system 10 will be described in detail below with reference to the working process.

[0162] As shown in Figure 3, during use, the user inputs the desired bag type, and the control unit 300 matches the input desired bag type with the model of the mold 101 on the mold receiving component 20 fed back by the mold identification unit 400.

[0163] If a match is found, then proceed with production;

[0164] If no match is found, the control unit 300 further matches the desired bag type with the model of the mold 101 on the multiple carrier seats 110 fed back by the mold identification unit 400, and identifies the mold 101 installed on one of the carrier seats 110 that matches the desired bag type as the mold 101 to be replaced.

[0165] Further, the control unit 300 first controls the pickup component 210 to move along the first guide 221 to the mold connection position of the mold receiving component 20, and the angle adjustment component 213 adjusts the orientation of the pickup component 212 so that the pickup slot of the pickup component 212 is opposite to the mold 101 to be disassembled on the mold receiving component 20. Further, the mold 101 to be disassembled on the mold receiving component 20 is completely embedded in the pickup slot. The control unit 300 controls the receiving component to remove the mold 101. The multiple protrusions 102 of the mold 101 are embedded in the corresponding limiting recesses. The pickup component 210 completes the pickup of the disassembled mold 101. Further, the control unit 300 controls the pickup component 210 to move along the first guide 221 to the mold loading unit, and along... The first guide 221 moves to the corresponding position of the unloaded support 110. The unloaded support 110 moves to the second position along the third direction Z on the support assembly 120. The angle adjustment member 213 adjusts the orientation of the pickup member 212 so that the mold 101 on the pickup slot of the pickup member 212 corresponds to the support 110. The pickup assembly 210 moves the mold 101 along the second direction X to approach the support 110. Multiple auxiliary locking pins on the mold 101 are embedded in the corresponding locking grooves. The locking cylinder moves the clamp downward and clamps the locking pins. The position detection element 113 on the support 110 detects the mold 101, thus completing the loading of the mold 101 to be disassembled and completing the demolding process.

[0166] Furthermore, the first guide 221, in conjunction with the pickup assembly 210, moves along the second guide 222 in the second direction X until it is positioned corresponding to the carrier 110 on which the mold to be replaced 101 is loaded. The carrier 110, in its loaded state, moves along the third direction Z on the support assembly 120 to the second position. Meanwhile, the angle adjustment member 213 adjusts the orientation of the pickup member 212 so that the pickup slot of the pickup member 212 corresponds to the mold 101 on the carrier 110. Further, the pickup assembly 210 moves toward the mold 101, causing the mold 101 to be embedded in the pickup slot. The locking cylinder depressurizes, the chuck releases its grip on the locking pin, and the pickup assembly 210... 0 picks up mold 101 from carrier 110 and moves it along the second direction X to a position corresponding to mold receiving assembly 20. Angle adjustment component 213 adjusts the angle of pickup component 212 so that mold 101 in pickup slot faces mold receiving assembly 20. Picking assembly 210 moves along first guide component 221 toward mold receiving assembly 20 until mold connection position of mold receiving assembly 20. Mold receiving assembly 20 connects mold 101 through locking part 103 on mold 101. Position detection element 113 on mold receiving assembly 20 detects mold 101, thus completing the loading of mold 101 to be replaced and completing the mold loading process.

[0167] 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 the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the invention, many specific details are included in the above description, and the invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0168] 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.

[0169] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in during use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0170] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0171] 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.

[0172] While 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 invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the invention to these descriptions. Various changes in form and detail can be made by those skilled in the art, including several simple deductions or substitutions, without departing from the spirit and scope of the invention.

Claims

1. A mold changing system for a nonwoven bag forming equipment, the nonwoven bag forming equipment comprising a forming unit for forming the bag body of a nonwoven bag, wherein the forming unit is provided with a mold receiving assembly detachably connected to a mold for forming the bag body; characterized in that, The mold changing system includes: A mold carrying unit, wherein the mold carrying unit has multiple carrying seats, each of the carrying seats can switch between a loaded state in which the mold is loaded and an unloaded state in which the mold is not loaded; A mold changing unit, the mold changing unit including a picking component, the picking component being connectable to the mold and driving the mold to move between the mold receiving component and any of the carrier seats; A control unit, electrically connected to the mold receiving assembly, the mold carrying unit, and the mold changing unit; wherein... The user inputs the desired bag shape, and the control unit determines the mold that matches the desired bag shape and needs to be connected to the mold receiving assembly based on the input. The control unit drives the pickup assembly to the mold receiving assembly, removes the existing mold from the mold receiving assembly, and transports it to the unloaded support seat in the mold carrying unit; further... The picking component is driven to pick up the mold that matches the desired bag type from the carrier seat in the loading state of the mold carrying unit, transport the mold to the mold receiving component, and connect the mold to the mold receiving component.

2. The mold changing system for nonwoven bag forming equipment as described in claim 1, characterized in that, in The picking component transports the mold along the unloading path or the loading path; wherein The unloading path is located between the mold connection position of the mold receiving assembly and the bearing seat in the mold bearing unit when it is in an unloaded state. The mold loading path is located between the support seat in the mold support unit when it is in the loading state and the mold connection position of the mold receiving assembly.

3. The mold changing system for nonwoven bag forming equipment as described in claim 2, characterized in that, The mold changing unit further includes a guide assembly, and the pickup assembly is disposed on the guide assembly; wherein The guiding assembly includes a first guide extending in a first direction between the mold receiving assembly and the mold carrying unit, and a second guide extending in a second direction through an opening in each of the bearing seats in the mold carrying unit; wherein the first direction and the second direction intersect each other, and the first guide is disposed on the second guide and movable relative to the second guide in the second direction, and the picking assembly is movably disposed on the first guide in the first direction; and The guiding component further includes a first driving element and a second driving element, both of which are electrically connected to the control unit; wherein, the first driving element drives the pickup component to move along the first direction, and the second driving element drives the first guiding element to move along the second direction.

4. The mold changing system for nonwoven bag forming equipment as described in claim 3, characterized in that, The first direction is perpendicular to the second direction; and The guiding component further includes an auxiliary guide that is parallel to and spaced apart from the second guide. One end of the first guide is disposed on the second guide and the other end is disposed on the auxiliary guide. The first guide can translate relative to the second guide and the auxiliary guide along the second direction.

5. The mold changing system for a nonwoven bag forming equipment as described in claim 4, characterized in that, The mold support unit further includes a base and a plurality of support components disposed on the base. The plurality of support components correspond one-to-one with the plurality of support seats, and each support component is disposed between a corresponding support seat and the base. The support seat is movably disposed on the support component. and The support assembly extends along a third direction, which is perpendicular to both the first and second directions. The bearing seat is movable relative to the support assembly along the third direction to switch between a first position and a second position. When the support seat is in the first position and is in a loading state, the mold loaded on the corresponding support seat can be directly supported by the base; and When the carrier is in the second position, in the third direction, the carrier and the pickup component on the guide component can be adapted to each other.

6. The mold changing system for a nonwoven bag forming equipment as described in claim 5, characterized in that, in The plurality of support seats are arranged in pairs on both sides of the first guide and respectively located at both ends of the second guide; and Each of the support components is provided with a third driving member that drives the corresponding support seat to move along the third direction, and the third driving member is electrically connected to the control unit.

7. The mold changing system for a nonwoven bag forming equipment as described in claim 6, characterized in that, The picking assembly includes a mounting component connected to the guide assembly and a picking component having a picking part for picking up the mold. An angle adjustment component is provided between the picking component and the mounting component, and the angle adjustment component can drive the picking component to rotate relative to the mounting component about an axis parallel to the third direction.

8. The mold changing system for a nonwoven bag forming equipment as described in claim 7, characterized in that, Both the mounting component and the pickup component are configured as plate-like structures stacked along the third direction. The angle adjustment component is disposed on the mounting component and is drively connected to the pickup component; wherein... The mounting component has a groove on the side opposite to the pickup component that is adapted to and connected to the first guide component, and the pickup portion of the pickup component is configured as a pickup groove adapted to the outer side wall of the mold. The mounting component is on the guide assembly and located at the mold connection position of the mold receiving assembly. The angle adjustment component rotates in conjunction with the pickup component so that the pickup slot faces the mold receiving assembly. The mounting component is on the guide assembly and positioned corresponding to the support seat. The angle adjustment component rotates in conjunction with the pickup component so that the pickup slot faces the support seat.

9. The mold changing system for a nonwoven bag forming equipment as described in claim 8, characterized in that, The outer wall of the mold is provided with multiple protrusions at intervals along the circumference, and the pickup member is provided with multiple limiting parts at corresponding positions on the outer periphery of the pickup groove. The outer wall of the mold is embedded in the pickup groove, and the plurality of protrusions abut against the pickup component and are located in the limiting part corresponding to the outer periphery of the pickup groove.

10. The mold changing system for a nonwoven bag forming equipment as described in claim 6, characterized in that, One end of the mold forms a locking part, and a plurality of positioning parts are arranged at intervals around the locking part; Furthermore, the support seat is provided with a locking member corresponding to the locked part and a locking recess provided with a plurality of positioning parts corresponding to the support seat on one side along the second direction; The picking component moves the mold along the second direction toward the carrier in an unloaded state. The plurality of positioning parts of the mold are embedded in the corresponding locking recesses, and the locking member locks the locked part on the mold. The carrier is connected to the mold from one end of the mold.

11. The mold changing system for a nonwoven bag forming equipment as described in claim 6, characterized in that, in The first guide, the second guide, and the support assembly are all slide rails; and The first direction and the second direction are two directions that extend horizontally and are perpendicular to each other, and the third direction is a direction that extends vertically.

12. The mold changing system for a nonwoven bag forming equipment as described in any one of claims 1-11, characterized in that, The different models of the molds differ in at least one of their length, width, and thickness dimensions, and each mold has a marking corresponding to its model number. The mold changing system also includes a mold identification unit electrically connected to the control unit; the mold identification unit includes marking detection elements respectively disposed on the mold receiving assembly and the carrier.

13. The mold changing system for a nonwoven bag forming equipment as described in claim 12, characterized in that, The user inputs the desired bag type, and the control unit matches the input bag type with the mold model on the mold receiving component fed back by the mold identification unit; If a match is found, then proceed with production; If no match is found, the control unit further matches the desired bag type with the model of the mold on the plurality of carrier seats fed back by the mold identification unit, and determines the mold installed on one of the carrier seats that matches the desired bag type as the mold to be replaced.

14. The mold changing system for a nonwoven bag forming equipment as described in any one of claims 1-11, characterized in that, The mold receiving assembly and the plurality of bearing seats are each provided with a position detection element for detecting the mold, and the position detection element is electrically connected to the control unit.

15. The mold changing system for a nonwoven bag forming equipment as described in claim 14, characterized in that, The position detection element includes any one of a photoelectric sensor, a proximity switch, or an ultrasonic sensor.

16. The mold changing system for a nonwoven bag forming equipment as described in claim 14, characterized in that, It also includes an alarm that is electrically connected to the control unit, wherein The picking component moves along a predetermined path to move the mold to the mold installation position of the mold receiving component or the corresponding position of the carrier. If the corresponding position detection element does not send a signal to the control unit indicating that the mold has been detected, the control unit controls the mold changing unit to stop working and controls the alarm to sound an alarm.

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