Bag folding device for three-dimensional bag

Abstract

The utility model discloses a three-dimensional bag folding device which comprises a rack and a bag folding mechanism arranged on the rack, and the bag folding mechanism is provided with a conveying channel and a conveying component driving the three-dimensional bag to be conveyed in the conveying channel. The two opposite front faces, in the thickness direction, of the three-dimensional bags in the conveying channel abut against a pair of channel side portions of the conveying channel respectively, and in the conveying direction of the three-dimensional bags, the distance between the pair of channel side portions of the conveying channel is gradually reduced from the mechanism inlet to the mechanism outlet. The bag folding device further comprises a bag body synchronizing part, the bag body synchronizing part is provided with a positioning end facing the conveying channel, the positioning end is connected with the front face of the corresponding side of the three-dimensional bag in the conveying channel, and the positioning end and the three-dimensional bag synchronously move in the conveying channel. The positioning end of the bag body synchronizing component and the three-dimensional bag conveyed by the conveying component synchronously move in the conveying channel, so that the three-dimensional bag is prevented from slipping or dislocation with the conveying component when moving in the conveying channel, and the yield of folding and flattening the three-dimensional bag is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bag making, in particular to a three -dimensional bag folding device. BACKGROUND

[0002] The bag produced by the forming equipment using the packaging bag in the prior art is generally a three-dimensional bag, for the convenience of storage and transportation, the three-dimensional bag generally needs to be folded and flattened before being packaged in batches, and the common folding and flattening of the packaging bag generally includes two ways, one is manual folding and flattening, and the other is using a bag folding machine to fold and flatten. When using the bag folding machine to flatten, a conveying channel is generally arranged in the bag folding machine, the conveying channel is arranged in a structure with gradually reduced opening, and when the three-dimensional bag is conveyed in the conveying channel, the three-dimensional bag is gradually folded and flattened by the conveying channel. When the three-dimensional bag is conveyed in the conveying channel, a mode of arranging two conveying belts is generally adopted for conveying, and the three-dimensional bag is gradually flattened while moving with the conveying belts, but the three-dimensional bag may slip or be misaligned when being conveyed in the conveying channel of the bag folding machine, for example, the whole three-dimensional bag may slip relative to the conveying belts, or the two sides of the three-dimensional bag may be misaligned in the conveying process, resulting in wrinkles or deformation on the surface of the three-dimensional bag during folding, and even the three-dimensional bag may be damaged.

[0003] Therefore, the three-dimensional bag in the prior art may slip or be misaligned when being conveyed and folded in the bag folding machine, thereby causing folding quality problems of the three-dimensional bag or even damage to the three-dimensional bag, and the qualified rate of bag making is low. SUMMARY

[0004] The purpose of the present application is to solve the problem that the three-dimensional bag in the prior art may slip or be misaligned when being conveyed and folded in the bag folding machine, thereby causing folding quality problems of the three-dimensional bag or even damage to the three-dimensional bag, and the qualified rate of bag making is low.

[0005] To solve the above technical problems, the embodiment of the present application discloses a three-dimensional bag folding device, which comprises a rack and a bag folding mechanism arranged on the rack, the bag folding mechanism has a conveying channel from a mechanism inlet to a mechanism outlet, and a conveying component for conveying the three-dimensional bag in the conveying channel.

[0006] The two opposite surfaces of the three-dimensional bag in the conveying channel are respectively in abutment with a pair of channel side portions of the conveying channel in the thickness direction, and the spacing between the pair of channel side portions of the conveying channel gradually decreases from the mechanism inlet to the mechanism outlet in the conveying direction of the three-dimensional bag.

[0007] The bag folding device further comprises a bag body synchronizing component, the bag body synchronizing component has a positioning end facing the conveying channel, the positioning end is engaged with the corresponding side surface of the three-dimensional bag in the conveying channel and moves synchronously with the three-dimensional bag in the conveying channel.

[0008] According to the above technical solution, when the three-dimensional bag is folded, the three-dimensional bag is conveyed in the conveying channel by the conveying component, and the two front surfaces of the three-dimensional bag are respectively abutted and constrained by the pair of channel side portions of the conveying channel, so that the folding effect is not affected by the deviation of the three-dimensional bag during the conveying process. In addition, the spacing between the pair of channel side portions of the conveying channel gradually decreases from the mechanism inlet to the mechanism outlet in the conveying direction of the three-dimensional bag, so that the three-dimensional bag can be synchronously folded during the conveying process, and the efficiency is higher.

[0009] In addition, the bag folding device provided by the application also has a bag synchronizing component, and the bag synchronizing component has a positioning end facing the conveying channel. Therefore, after the three-dimensional bag enters the conveying channel, the positioning end can be engaged with the corresponding side surface of the three-dimensional bag in the conveying channel, so that the three-dimensional bag can move synchronously with the conveying component in the conveying channel. Even if the spacing between the pair of channel side portions gradually decreases and a larger forward resistance is applied to the three-dimensional bag, the bag synchronizing component can still enable the three-dimensional bag to move synchronously with the conveying component, and can also avoid the three-dimensional bag from slipping relative to the channel side portions due to different frictional forces, so that the probability of the three-dimensional bag slipping and mispositioning relative to the conveying component is low, thereby reducing the risk of folding failure of the three-dimensional bag due to slipping and mispositioning during folding.

[0010] Therefore, the bag folding device for three-dimensional bags provided by the application can accurately and efficiently fold the three-dimensional bags, and can further improve the yield and production efficiency of the bag making equipment when applied to the bag making equipment.

[0011] The embodiment of the application also discloses a bag folding device for three-dimensional bags. In the thickness direction of the three-dimensional bag, the bag synchronizing component is located on the same side and / or the other side of the conveying component relative to the conveying channel.

[0012] According to the above technical solution, the bag synchronizing component can be arranged on the same side of the conveying component according to requirements, or can be arranged on the other side of the conveying component according to requirements, and can also be arranged on both sides of the pair of channel side portions of the conveying channel. Finally, the bag synchronizing component can enable the three-dimensional bag to move synchronously with the conveying component in the conveying channel.

[0013] The embodiment of the application also discloses a bag folding device for three-dimensional bags. When viewed in the thickness direction of the three-dimensional bag, each channel side portion is a plane extending in the conveying direction.

[0014] The conveying component includes at least one conveying unit arranged along the conveying direction, each conveying unit having an engaging portion movable along the corresponding side of the conveying direction and aligned with the corresponding side of the channel side portion near the side surface of the conveying channel. The engaging portion is engaged with the corresponding side of the three-dimensional bag in the conveying channel and drives the three-dimensional bag to move along the corresponding side of the channel side portion in the conveying channel.

[0015] The above technical solution is adopted, each channel side portion is a plane extending along the conveying direction, and the engaging portion of the conveying component is aligned with the corresponding side of the channel side portion. When the three-dimensional bag is conveyed in the conveying channel, the two front surfaces of the three-dimensional bag can be in contact with the plane of the channel side portion or the engaging portion, so that the three-dimensional bag is smoothly conveyed along the corresponding side of the channel side portion in the conveying channel. The distance between the pair of channel side portions of the conveying channel gradually decreases, so that the three-dimensional bag is folded and flattened by being pressed on both sides by the pair of channel side portions in the conveying channel, thereby avoiding problems such as deformation or local wrinkling of the three-dimensional bag. The folded and flattened three-dimensional bag is flat and smooth.

[0016] The embodiment of the present application also discloses a bag folding device for a three-dimensional bag, the pair of channel side portions are inclined with respect to the conveying direction, and the conveying component includes a pair of conveying units, and the engaging portion of each conveying unit is movably arranged along the corresponding side of the channel side portion.

[0017] The above technical solution is adopted, a pair of conveying units are provided, and the engaging portion of each conveying unit can simultaneously contact the two front surfaces of the three-dimensional bag. When the three-dimensional bag is conveyed along the conveying channel, the two front surfaces of the three-dimensional bag are smoothly flattened.

[0018] The embodiment of the present application also discloses a bag folding device for a three-dimensional bag, each conveying unit includes a conveying belt arranged along the corresponding side of the channel side portion, and the conveying belt near the side surface of the conveying channel serves as the engaging portion and is aligned with the channel side portion.

[0019] Each conveying unit further includes a pair of pulleys arranged at the mechanism inlet and the mechanism outlet respectively, and a belt driving mechanism driving the pair of pulleys, and the conveying belt is arranged around the pair of pulleys.

[0020] The above technical solution is adopted, each conveying unit is provided as a conveying belt, the conveying belt can be in close contact with the front surface of the three-dimensional bag, and the conveying stability is high. When the conveying belt is provided, the conveying belt moves in a loop around the pair of pulleys, the transmission efficiency is high, and it is more suitable for assembly line operation.

[0021] The embodiment of the present application also discloses a bag folding device for a three-dimensional bag, wherein the bag body synchronizing component includes a suction unit, and the suction end portion of the suction unit serves as a positioning end and is suction-attached to the corresponding side of the front surface of the three-dimensional bag in the conveying channel, and moves in the conveying channel synchronously with the three-dimensional bag.

[0022] By adopting the above technical solution, after the suction end of the suction unit is attached to the front of the corresponding side of the three-dimensional bag as the positioning end, the three-dimensional bag can be accurately and synchronously positioned, so that the three-dimensional bag will not slip or be misaligned when it is transported in the conveying channel.

[0023] The embodiments of this application also disclose a folding device for a three-dimensional bag. The suction unit includes a plurality of suction holes evenly distributed in an array and passing through at least one conveyor belt. The suction holes open on one side facing the conveyor channel as positioning ends and adsorb and engage with the corresponding front side of the three-dimensional bag. Furthermore, the bag synchronization component also includes an air extraction component disposed on the frame, and the opening on the other side away from the conveyor channel of each suction hole communicates with the air extraction component.

[0024] By employing the above technical solution, multiple suction holes are set on at least one conveyor belt, eliminating the need for an additional suction unit. With this configuration, the side of the conveyor belt facing the 3D bag not only transports the bag but also serves as a positioning end to contact and secure it, preventing misalignment or slippage between the bag and the conveyor belt. The suction holes on the conveyor belt can quickly absorb and position the 3D bag before transporting and flattening it.

[0025] More preferably, the conveying direction is horizontal, and a pair of conveyor belts extend symmetrically to each other with respect to the horizontal direction.

[0026] Multiple air suction holes are installed on the lower conveyor belt located below, and are adsorbed and engaged with the lower front side of the three-dimensional bag in the conveying channel.

[0027] Each air intake hole on the side of the lower conveyor belt near the conveyor channel is connected to the air extraction component through an air extraction chamber, which is located in the area surrounded by the lower conveyor belt.

[0028] Using the above technical solution, a pair of conveyor belts extend symmetrically to each other in the horizontal direction. As the three-dimensional bag moves in the conveyor channel with the conveyor belts, it is gradually folded and flattened by the pair of conveyor belts. An air extraction component is set up to extract air from the air extraction hole and adsorb the three-dimensional bag.

[0029] The embodiments of this application also disclose a folding device for a three-dimensional bag, which further includes an auxiliary synchronization component. The auxiliary synchronization component is located on the same side as the upper conveyor belt above. The auxiliary synchronization component engages with the upper front of the three-dimensional bag in the conveying channel and moves synchronously with the three-dimensional bag in the conveying channel.

[0030] By adopting the above technical solution, the auxiliary synchronization component can be set to position the upper front of the three-dimensional bag, so that both front sides of the three-dimensional bag can be positioned.

[0031] The embodiments of this application also disclose a folding device for a three-dimensional bag, wherein the upper conveyor belt includes multiple narrow belts arranged side by side and spaced apart along the width direction of the conveyor channel, the multiple narrow belts are wrapped around a pair of pulleys, and the pair of pulleys can drive the multiple narrow belts to move synchronously.

[0032] The auxiliary synchronization component includes auxiliary suction units arranged in pairs on both sides of the upper conveyor belt, wherein each pair of auxiliary suction units is opposite to each other in the width direction, and each auxiliary suction unit includes an auxiliary suction component, an auxiliary drive component, and an auxiliary moving part.

[0033] An auxiliary drive component is mounted on the frame. An auxiliary moving part is movably mounted on the frame along the conveying direction, located outside the upper conveyor belt and connected to the auxiliary drive component in a transmission manner. An auxiliary suction component is mounted on the side of the auxiliary moving part near the upper conveyor belt and can move together with the auxiliary moving part along the conveying direction.

[0034] Each auxiliary suction device has an suction end that extends in the width direction above the corresponding side of the 3D bag, facing the upper front of the 3D bag, and the suction end can pass through the corresponding narrow band gap to engage with the upper front of the 3D bag.

[0035] Using the above technical solution, the upper conveyor belt is set as multiple narrow belts, and the suction end of the auxiliary suction component can pass through the corresponding narrow belt gaps and engage with the upper front side of the three-dimensional bag. The suction holes on the auxiliary suction component and the lower conveyor belt are set to respectively suction and fix the two front sides of the three-dimensional bag, so that the three-dimensional bag will not slip relative to the conveyor belt and be gradually flattened during the conveying process.

[0036] More preferably, each auxiliary moving part includes an auxiliary moving belt disposed on the frame, outside the upper conveyor belt and extending along the conveying direction, and a pair of auxiliary pulleys disposed at both ends of the auxiliary moving belt, the auxiliary moving belt extending around the pair of auxiliary pulleys.

[0037] One end of the auxiliary suction device is fixed to the auxiliary moving belt, and the other end has an auxiliary suction cup facing the conveying channel, and the auxiliary suction cup extends in the width direction above the corresponding side of the stand-up pouch.

[0038] The auxiliary drive component is an auxiliary drive motor fixed on the frame. The auxiliary drive motor drives the auxiliary pulley to move the auxiliary moving belt and moves the auxiliary suction cup and the three-dimensional bag synchronously in the conveying channel.

[0039] This application also discloses a folding device for a three-dimensional bag. Each pair of auxiliary suction units further includes a width adjustment component. The width adjustment component includes a pair of movable bases that are movably mounted on the frame along the width direction and located on opposite outer sides of the upper conveyor belt. Each auxiliary suction unit is respectively mounted on a corresponding movable base. A screw adjustment assembly is also included, extending along the width direction of the conveying channel and being drively connected to the pair of movable bases. The screw adjustment assembly can drive the pair of movable bases to move closer to or further apart from each other in the width direction.

[0040] By adopting the above technical solution, the width adjustment component can adjust the spacing between a pair of auxiliary suction units in the width direction of the conveying channel. The screw adjustment component has high adjustment accuracy and can be quickly adapted and adjusted according to different sizes of three-dimensional bags, making it more widely applicable.

[0041] The embodiments of this application also disclose a folding device for a three-dimensional bag, wherein each conveyor belt includes multiple narrow belts arranged side by side and spaced apart along the width direction of the conveying channel, the multiple narrow belts are wrapped around a corresponding pair of pulleys, and the pair of pulleys can drive the multiple narrow belts to move synchronously.

[0042] The bag synchronization component includes suction units arranged in pairs on both sides of at least one conveyor belt, wherein each pair of suction units is opposite to each other in the width direction, and each suction unit includes a suction element, a suction drive member, and a suction moving part.

[0043] The suction drive component is mounted on the frame. The suction moving part is movably mounted on the frame along the conveying direction, located outside the conveyor belt and connected to the suction drive component. The suction element is mounted on the side of the suction moving part close to the conveyor belt and can move together with the suction moving part along the conveying direction.

[0044] The suction end of each suction unit extends in the width direction above the corresponding side of the stand-up pouch, facing the corresponding front side of the stand-up pouch, and the suction end can pass through the corresponding narrow band gap and engage with the corresponding front side of the stand-up pouch.

[0045] By adopting the above technical solution, each conveyor belt is arranged in a narrow belt configuration, which can reduce the friction between the belt and the stackable bag, and the suction device can also pass through the gap of the narrow belt to fix the stackable bag relatively.

[0046] The embodiments of this application also disclose a folding device for a three-dimensional bag, which further includes a side folding mechanism. The side folding mechanism includes two side folding components mounted on a frame. The two side folding components are located on both sides of the conveying channel along the width direction of the conveying channel. Both side folding components are aligned with the middle fold line of the side of the three-dimensional bag in the conveying channel.

[0047] By adopting the above technical solution and setting up a side-folding mechanism, when the stand-up pouch is conveyed in the conveying channel, the two side-folding components can insert the sides of the stand-up pouch into the inside of the folded pouch, making the stand-up pouch more aesthetically pleasing after being folded and flattened.

[0048] The embodiments of this application also disclose a folding device for a three-dimensional bag, which further includes a bottom folding mechanism. The bottom folding mechanism includes at least one bottom folding component disposed on a frame. The at least one bottom folding component is located on at least one side of the conveying channel along the width direction of the conveying channel. The bottom folding component includes a bottom folding transmission assembly disposed on the frame and extending along the length direction of the conveying channel, and a bottom folding member disposed on the bottom folding transmission assembly. The bottom folding transmission assembly can drive the bottom folding member to move along the length direction of the conveying channel, and the bottom folding member can rotate relative to the bottom folding transmission assembly and extend into the conveying channel to abut against the bottom of the three-dimensional bag.

[0049] By adopting the above technical solution, the bottom folding mechanism can also fold the bottom of the stand-up pouch and insert it into the inside of the stand-up pouch when folding the pouch, making the stand-up pouch more aesthetically pleasing after being folded and flattened.

[0050] In summary, the beneficial effects of this application are:

[0051] This application discloses a folding device for a stand-up pouch. The stand-up pouch is conveyed in a conveying channel by a conveying component. A bag synchronization component is further provided, and the positioning end of the bag synchronization component is engaged with one side of the front of the stand-up pouch. The positioning end moves synchronously with the stand-up pouch conveyed by the conveying component in the conveying channel, which avoids the stand-up pouch from slipping or misaligning with the conveying component when it moves in the conveying channel. This further prevents the stand-up pouch from deforming, wrinkling, or being damaged during the conveying and flattening process. The folded and flattened stand-up pouch is flat and smooth, which improves the efficiency of folding and flattening the stand-up pouch and the yield rate. Attached Figure Description

[0052] Figure 1 A schematic diagram of the folding device for a three-dimensional bag provided in an embodiment of this utility model;

[0053] Figure 2 A partial structural schematic diagram of the auxiliary synchronization component of the folding device for the three-dimensional bag provided in this embodiment of the utility model;

[0054] Figure 3 A partial structural diagram of the auxiliary chamber provided in the bag body synchronization component of the folding device for the three-dimensional bag provided in the embodiment of this utility model;

[0055] Figure 4 A schematic diagram of the overall structure of the folding device for the three-dimensional bag provided in this embodiment of the utility model, including a side folding mechanism and a bottom folding mechanism.

[0056] Explanation of reference numerals in the attached figures:

[0057] 100. Frame; 101. Mechanism entrance; 102. Mechanism exit; 103. Conveying channel;

[0058] 200. Conveying component; 210. Lower conveyor belt; 220. Pulley; 230. Upper conveyor belt;

[0059] 300. Bag body synchronization component; 310. Positioning end; 320. Air inlet; 330. Air extraction component; 340. Air extraction chamber; 350. Negative pressure air extraction hood;

[0060] 400. Auxiliary synchronization component; 410. Auxiliary suction component; 420. Auxiliary drive component; 430. Auxiliary moving belt; 440. Auxiliary pulley;

[0061] 500. Width adjustment component; 510. Movable base; 520. Screw adjustment assembly;

[0062] 600. Side folding mechanism; 610. Side folding component;

[0063] 700. Folding bottom edge mechanism; 701. Folding bottom component; 702. Folding bottom transmission assembly;

[0064] X represents the thickness direction of the 3D bag; Y represents the length direction of the conveying channel; Z represents the width direction of the conveying channel. Detailed Implementation

[0065] Common stand-up pouch folding machines are generally equipped with a conveyor channel. Inside the conveyor channel, there are two oppositely arranged conveyor belts. The distance between the two conveyor belts gradually decreases and they roughly form a "V" shape along the length of the conveyor channel. The conveying speed of the two conveyor belts is set to be the same. When the stand-up pouch is conveyed in the conveyor channel, the two front sides come into contact with the two conveyor belts respectively. As the stand-up pouch is carried along the conveyor channel by the two conveyor belts, it is gradually flattened along the thickness direction.

[0066] However, when the two sides of the stand-up pouch come into contact with the conveyor belt, misalignment or slippage may occur in the conveying direction. For example, when the stand-up pouch as a whole slips relative to the conveyor belt, or when the two sides of the stand-up pouch slip differently due to different friction or other reasons during conveying, causing misalignment, the stand-up pouch may develop wrinkles, wear, deformation, or even be torn and damaged.

[0067] To address the aforementioned technical problems, this application discloses a folding device for a stand-up pouch. The folding device includes a bag body synchronization component, which has a positioning end that engages with the corresponding side of the stand-up pouch. The positioning end of the bag body synchronization component moves synchronously with the stand-up pouch within the conveying channel, and the positioning end also moves synchronously with the conveying component. This ensures that the stand-up pouch and the conveying component are relatively fixed, preventing relative slippage or misalignment between the stand-up pouch and the conveying component during the conveying process. This improves the efficiency of folding and flattening the stand-up pouch and increases the yield rate.

[0068] It should be noted that the folding device for three-dimensional bags disclosed in this embodiment can be applied to folding and flattening three-dimensional bags of various materials or shapes, such as paper bags, non-woven bags, and plastic bags.

[0069] 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.

[0070] Please see Figure 1 The stand-up pouch folding device provided in this application includes a frame 100 and a folding mechanism disposed on the frame 100. The folding mechanism has a conveying channel 103 from the mechanism inlet 101 to the mechanism outlet 102 and a conveying component 200 that drives the stand-up pouch to be conveyed within the conveying channel 103. In use, the formed stand-up pouch (not shown in the figure) is conveyed from the mechanism inlet 101 of the folding mechanism into the conveying channel 103. The conveying component 200 gradually conveys the stand-up pouch from the mechanism inlet 101 to the mechanism outlet 102 and into the next station. During the conveying process, the stand-up pouch is pressed and folded into a flat shape along the thickness direction by its three-dimensional structure to facilitate subsequent packaging.

[0071] Specifically, in the conveying direction of the 3D bag, the spacing between the two channel sides of the conveying channel 103 gradually decreases from the mechanism inlet 101 to the mechanism outlet 102. The two channel sides of the conveying channel 103 are approximately "V"-shaped in the conveying direction. The 3D bag inside the conveying channel 103 abuts against the two channel sides of the conveying channel 103 on its two opposite front sides in the thickness direction. It should be noted that in this embodiment, the thickness direction of the 3D bag is as follows... Figure 1 As shown in the X direction, that is, the thickness direction of the three-dimensional bag is the same as the height direction of the bag folding device, and the length direction of the conveying channel 103 of the bag folding device is as shown in the X direction. Figure 1 As shown in the Y direction, it should be noted that in this embodiment, the conveying direction of the three-dimensional bag is the same as the conveying direction of the conveying channel 103.

[0072] More specifically, the 3D bag enters the conveying channel 103 from the mechanism inlet 101, and is then carried by the conveying component 200 along the conveying channel 103 to the mechanism outlet 102.

[0073] In this embodiment, the specific structure of the pair of channel sides is not limited. For example, the channel sides can be a conveyor belt, a plate structure, etc., and the pair of channel sides can be set to the same structure or different structures.

[0074] For example, in one embodiment, one or both of the two channel sides are configured as a conveyor belt, which extends from the mechanism inlet 101 to the mechanism outlet 102. The outer wall of the conveyor belt facing the conveying channel 103 serves as the channel side. While conveying the 3D bag, the outer wall of the conveyor belt will simultaneously fold and flatten the 3D bag.

[0075] For example, in another embodiment, one or both of the pair of channel sides are configured as extension plates, which extend from the mechanism inlet 101 to the mechanism outlet 102. The extension plates face the outer wall of the conveying channel 103 as channel sides, and the extension plates fold and flatten the 3D bags while conveying them.

[0076] For example, in another embodiment, one of the two channel sides is configured as a conveyor belt and the other as an extension plate. The conveyor belt and the extension plate extend from the mechanism inlet 101 to the mechanism outlet 102. While conveying the 3D bag, the conveyor belt and the extension plate fold and flatten the 3D bag.

[0077] It should be noted that the direction in which the 3D bag is conveyed within the conveying channel 103 in this embodiment is not limited. For example, in one embodiment, the conveying channel 103 can be configured to be horizontal, and the 3D bag can be conveyed horizontally. In another embodiment, the conveying channel 103 can be configured to be vertical, and the 3D bag can be conveyed vertically. During conveying, the two front sides of the 3D bag respectively abut against a pair of channel sides of the conveying channel 103, and are then folded and flattened along the thickness direction of the 3D bag by the pressure of the pair of channel sides.

[0078] With the design of this structure in this embodiment, when the 3D bag is conveyed in the conveying channel 103 by the conveying component 200, the two front sides of the 3D bag are respectively abutted and constrained by a pair of channel sides of the conveying channel 103. This can prevent the 3D bag from shifting during the conveying process and affecting the folding effect, thereby improving the conveying stability of the 3D bag. In addition, in the conveying direction of the 3D bag, the distance between the pair of channel sides of the conveying channel 103 gradually decreases from the mechanism inlet 101 to the mechanism outlet 102. In this way, the 3D bag can be folded synchronously during the conveying process, which is more efficient.

[0079] Furthermore, the bag folding device disclosed in this embodiment also includes a bag body synchronization component 300. The bag body synchronization component 300 has a positioning end 310 facing the conveying channel 103. The positioning end 310 engages with the front of a corresponding side of the three-dimensional bag in the conveying channel 103, and the positioning end 310 moves synchronously with the three-dimensional bag in the conveying channel 103.

[0080] In this embodiment, the specific arrangement and number of bag synchronization components 300 are not limited. They can be arranged on one side of the conveying channel 103 or on both sides.

[0081] For example, in one specific embodiment, when the bag synchronization component 300 is provided on one side of the conveying channel 103, the bag synchronization component 300 can be provided on the upper side or the lower side of the conveying channel 103. One, two or other numbers of bag synchronization components 300 can be provided on each side of the conveying channel 103. The positioning end 310 of the bag synchronization component 300 can be engaged and fixed with the upper front of the three-dimensional bag or with the lower front of the three-dimensional bag.

[0082] For example, in one specific embodiment, when the bag synchronization component 300 is arranged on both sides of the conveying channel 103, the bag synchronization component 300 is arranged on both sides of the conveying channel 103, and the positioning end 310 of the bag synchronization component 300 on both sides can be engaged and fixed with the upper front and lower front of the three-dimensional bag at the same time. Those skilled in the art can design and adjust according to actual needs, and this embodiment does not make specific limitations in this regard.

[0083] Furthermore, in this embodiment, the specific structure of the bag synchronization component 300 is not limited, and it can be, for example, an adsorption unit, a clamping unit, a snap-fit ​​unit, etc.

[0084] In one embodiment, the bag synchronization component 300 can be configured as an adsorption unit, such as a suction cup, a suction nozzle, or an air suction hole. The positioning end 310 of the bag synchronization component 300 is fixed to the corresponding front side of the three-dimensional bag by the adsorption unit through negative pressure adsorption. Then, as the three-dimensional bag and the conveying component 200 move synchronously in the conveying channel 103, misalignment or slippage between the three-dimensional bag and the conveying component 200 is avoided, so that the three-dimensional bag is stably folded and flattened.

[0085] In another embodiment, the bag synchronization component 300 can be configured as a clamping unit (not shown in the figure). For example, the clamping unit can be configured as a claw, a clamping plate, etc. The clamping unit can clamp one of the bag opening edges of the three-dimensional bag in a clamping manner, and then move synchronously with the three-dimensional bag and the conveying component 200 in the conveying channel 103, so as to avoid the three-dimensional bag and the conveying component 200 from shifting or slipping, and so that the three-dimensional bag is stably folded and flattened.

[0086] In another embodiment, the bag synchronization component 300 can be configured as a snap-fit ​​unit (not shown in the figure). For example, the snap-fit ​​unit can be configured as a slot on the conveyor belt that matches the shape of the 3D bag, or a buckle on the conveyor belt that matches the length of the 3D bag. The 3D bag can be fixed by snap-fitting through the slot or buckle. Then, as the 3D bag and the conveying component 200 move synchronously in the conveying channel 103, it avoids offset or slippage between the 3D bag and the conveying component 200, and makes the 3D bag stably folded and flattened.

[0087] As a preferred implementation, the bag body synchronization component 300 of the folding device for the stand-up pouch disclosed in this embodiment includes a suction unit. The suction end of the suction unit, serving as a positioning end 310, adsorbs and engages with the front of the corresponding side of the stand-up pouch within the conveying channel 103, and moves synchronously with the stand-up pouch within the conveying channel 103. After the suction end of the suction unit, serving as the positioning end 310, adsorbs and engages with the front of the corresponding side of the stand-up pouch, the stand-up pouch can be accurately and synchronously positioned, ensuring that the stand-up pouch does not slip or misalign with the conveying component 200 during conveying within the conveying channel 103.

[0088] Furthermore, in this embodiment, the specific operation mode of the positioning end 310 is not limited. For example, the positioning end 310 can move in the conveying channel 103 in an active manner or in a follow-up manner.

[0089] In one embodiment, for example, when the positioning end 310 moves synchronously with the 3D bag in the conveying channel 103, the positioning end 310 of the bag body synchronization component 300 can be driven by the driving member to move in the same direction as the direction of conveying the 3D bag, and the speed at which the driving member drives the bag body synchronization component 300 to move is the same as the speed at which the conveying component 200 conveys the 3D bag, so that the positioning end 310 can move synchronously with the 3D bag.

[0090] In another embodiment, the positioning end 310 of the bag synchronization component 300 can be synchronously transported with the three-dimensional bag after being engaged and fixed with it, so that the positioning end 310 can move synchronously with the three-dimensional bag.

[0091] The bag folding device disclosed in this embodiment, equipped with a bag synchronization component 300, has the following advantages: the bag synchronization component 300 has a positioning end 310 facing the conveying channel 103. After the 3D bag enters the conveying channel 103, the positioning end 310 engages with the corresponding front side of the 3D bag within the conveying channel 103, allowing the 3D bag to move synchronously with the conveying component 200 within the conveying channel 103. Even if the distance between the two channel sides gradually decreases, resulting in greater forward resistance for the 3D bag, the bag synchronization component 300 can still ensure that the 3D bag moves synchronously with the conveying component. Furthermore, it avoids slippage between the 3D bag and the channel sides due to different frictional forces, reducing the probability of the 3D bag slipping or misaligning relative to the conveying component 200. This lowers the risk of folding failure due to slippage or misalignment during folding. It allows for precise and efficient folding of 3D bags, and its application in bag-making equipment can further improve the yield and production efficiency of bag making.

[0092] The embodiments of this invention also disclose a folding device for a three-dimensional bag. In the thickness direction of the three-dimensional bag, the bag body synchronization component 300 is located on the same side and / or the other side of the conveying component 200 relative to the conveying channel 103. That is, the bag body synchronization component 300 can be arranged on the same side or on both sides of the conveying component 200 within the conveying channel 103.

[0093] The following explanation uses a bag synchronization component 300 configured as a suction cup and a conveyor component 200 configured as a conveyor belt as an example:

[0094] For example, in one embodiment, the bag synchronization component 300 and the conveying component 200 are arranged on the same side. The bag synchronization component 300 is a suction cup, and the conveying component 200 is a conveyor belt. The suction cup is located on the same side of the conveyor belt relative to the conveying channel 103. For example, in the width direction of the conveying channel 103, the suction cup and the conveyor belt can be arranged side by side, and the positioning end 310 of the conveyor belt is engaged with one side of the front of the three-dimensional bag.

[0095] In another embodiment, the bag synchronization component 300 and the conveying component 200 are arranged on both sides. The bag synchronization component 300 is also configured as a suction cup, and the conveying component 200 is also configured as a conveyor belt. However, the suction cup is located on the other side of the conveyor belt relative to the conveying channel 103. The suction cup and the conveyor belt are respectively arranged on both sides of the conveying channel 103, that is, the suction cup and the conveyor belt are respectively in contact with the front sides of the three-dimensional bag.

[0096] In another embodiment, the bag synchronization component 300 is also configured as a suction cup, and the conveying component 200 is also configured as a conveyor belt. Two suction cups can be configured and respectively configured on both sides of a pair of channels of the conveying channel 103. Those skilled in the art can design or adjust according to actual needs, and this embodiment does not make specific limitations in this regard.

[0097] This embodiment also discloses a folding device for a three-dimensional bag. When viewed along the thickness direction of the three-dimensional bag, each channel side is a plane extending along the conveying direction. The channel sides are set as planes, so when the three-dimensional bag is conveyed within the conveying channel 103, the two front faces of the three-dimensional bag contact and abut against the planes of the channel sides, increasing the contact area of ​​the three-dimensional bag, allowing it to be conveyed smoothly, and avoiding problems such as deformation or localized wrinkles.

[0098] The conveying component 200 includes at least one conveying unit extending along the conveying direction. Each conveying unit has a joint portion that is movable along the conveying direction on a corresponding side, and the surface of the joint portion near the conveying channel 103 is aligned with the channel side on the corresponding side. The joint portion engages with the front of the corresponding side of the 3D bag within the conveying channel 103, and drives the 3D bag to move along the channel side on the corresponding side within the conveying channel 103.

[0099] In this embodiment, the specific configuration structure of the conveying component 200 is not limited. For example, the conveying component 200 can be configured as a belt conveyor mechanism, a conveyor plate mechanism, etc.

[0100] For example, in one embodiment, the conveying component 200 may be configured as a belt conveyor mechanism, in which the conveying belt of the belt conveyor mechanism is arranged around a pair of pulleys, the pulleys rotate and drive the conveying belt to rotate cyclically, and at this time, the outer wall portion of the conveying belt located in the conveying channel 103 on one side is a joint portion, and the joint portion is configured as one side of the channel.

[0101] For example, in another embodiment, the conveying component 200 may be configured as a conveying plate mechanism. The conveying plate may be movably disposed in the conveying channel 103 via a slide rail, a moving groove or other transmission component, and the side of the conveying plate facing the 3D bag is the joint. The front of the 3D bag contacts the joint and is driven by the conveying plate to move along the conveying channel 103.

[0102] Specifically, in this embodiment, the number of conveying components 200 is not limited. For example, one, two, four or other quantities of conveying components 200 can be provided. When one conveying component 200 is provided, one conveying component 200 can be provided on any side of the conveying channel 103. For example, when two conveying components 200 are provided, the two conveying components 200 can be provided on both sides of the two channels of the conveying channel 103 respectively.

[0103] More preferably, in this embodiment, the conveying component 200 includes a pair of conveying units, and the joint of each conveying unit is movably disposed along the channel side of its respective side. Furthermore, both channel sides extend obliquely relative to the conveying direction. It should be noted that the length and oblique angle of the pair of channel sides can be designed and adjusted according to actual needs. The pair of channel sides can be symmetrically disposed along the conveying direction or asymmetrically disposed; this embodiment does not specifically limit this.

[0104] With this structural design, a pair of conveying units are set up, and the joint of each conveying unit can simultaneously contact the two front sides of the stand-up pouch. When each conveying unit conveys the stand-up pouch along the conveying channel 103, the two front sides of the stand-up pouch are flattened smoothly.

[0105] More specifically, in this embodiment, please refer to Figure 1 Each conveying unit includes a conveyor belt extending along the side of the channel on the corresponding side, with the side surface of the conveyor belt close to the side of the conveying channel 103 as a joint aligned with the side of the channel.

[0106] Each conveying unit also includes a pair of pulleys 220 respectively disposed at the mechanism inlet 101 and the mechanism outlet 102, and a belt drive mechanism for driving the pair of pulleys 220, with the conveyor belt extending around and surrounding the pair of pulleys 220.

[0107] In this embodiment, the specific structure of the belt drive mechanism is not limited; for example, it can be configured as a drive motor, a permanent magnet transmission mechanism, etc.

[0108] In the scheme disclosed in this embodiment, when the conveying unit is set as a conveyor belt, the side surface of the conveyor belt near the conveying channel 103 can be used as the corresponding side of the channel 103. Preferably, in this embodiment, two conveyor belts are provided on both sides of the conveying channel 103, and the side surfaces of the two conveyor belts near the conveying channel 103 are used as the two side surfaces of the conveying channel 103.

[0109] With this structural design, each conveying unit is equipped with a conveyor belt, which can make close contact with the front of the 3D bag, resulting in high conveying stability. When the conveyor belt is set, it moves in a cycle around a pair of pulleys 220, resulting in high transmission efficiency and making it more suitable for assembly line operations.

[0110] This embodiment also discloses a folding device for a three-dimensional bag; please refer to [link / reference]. Figure 1 and Figure 2The suction unit includes a plurality of suction holes 320 evenly distributed in an array and passing through at least one conveyor belt. The suction holes 320 open on one side facing the conveyor channel 103 as positioning ends 310 to adsorb and engage with the corresponding front side of the three-dimensional bag. Furthermore, the bag synchronization component 300 also includes an air extraction component 330 disposed on the frame 100. The other side of each suction hole 320 away from the conveyor channel 103 opens and communicates with the air extraction component 330.

[0111] Specifically, in this embodiment, when the suction holes 320 are set on the conveyor belt, for example, a row of suction holes 320 can be set every 3cm, 4cm, 6cm or other intervals in the length direction of the conveyor belt, and multiple rows of suction holes 320 are also set sequentially at intervals in the width direction of the conveyor belt.

[0112] More specifically, in this embodiment, for example, when two conveyor belts are provided, the multiple suction holes 320 can be provided on the lower conveyor belt, or on the upper conveyor belt, or on both the upper and lower conveyor belts. Those skilled in the art can design and select according to actual needs, and this embodiment does not make specific limitations in this regard.

[0113] This design, with multiple suction holes 320 on at least one conveyor belt, eliminates the need for an additional suction unit. In this configuration, the conveyor belt serves both as a conveying component 200 transporting the 3D bag towards the side facing the bag and as the positioning end 310 of the bag synchronization component 300, contacting and securing the 3D bag to prevent misalignment or slippage between the bag and the conveyor belt. The suction holes 320 on the conveyor belt quickly suction and position the 3D bag before transporting and flattening it.

[0114] Further preferred, please refer to Figure 1 The conveying direction is horizontal, and a pair of conveyor belts extend symmetrically to each other with respect to the horizontal direction. Multiple suction holes 320 are provided through the lower conveyor belt 210 located below, and are adsorbed and engaged with the lower front side of the three-dimensional bag in the conveying channel 103.

[0115] Specifically, in this embodiment, the two conveyor belts are symmetrically inclined at an unlimited angle in the horizontal direction. For example, the inclination angle can be 10°, 15°, 20°, etc.

[0116] Please see Figure 1 and Figure 3 Each air intake 320 on the side of the lower conveyor belt 210 near the conveyor channel 103 is connected to the air extraction component 330 through the air extraction chamber 340, wherein the air extraction chamber 340 is located in the area surrounded by the lower conveyor belt 210.

[0117] Specifically, in this embodiment, the specific structure of the air extraction component 330 is not limited. For example, it can be configured as an air extraction pump, a vacuum pump, etc., and multiple negative pressure suction hoods, vacuum adsorption boxes, etc., with one end having an opening facing the conveyor belt can be provided on the side of the lower conveyor belt 210 away from the conveyor channel 103. In this case, an air extraction chamber 340 is formed around the negative pressure suction hood or vacuum adsorption box and the lower conveyor belt 210. Furthermore, a pipeline is provided on one side of the negative pressure suction hood or vacuum adsorption box, etc., and the pipeline is connected to the air extraction component 330. When the air extraction component 330 is working, it draws air from the air extraction hole 320 through the pipeline and the air extraction chamber 340, thereby causing the lower front side of the 3D bag to be attracted to one side of the lower conveyor belt 210 by the air extraction hole 320. At this time, the 3D bag is fixed relative to the joint of the lower conveyor belt 210. As the joint of the lower conveyor belt 210 moves in the conveying channel 103, and the 3D bag is relatively fixed by the air extraction hole 320 of the lower conveyor belt 210, it will not shift or slip with the lower conveyor belt 210, so that the 3D bag is gradually folded and flattened.

[0118] For example Figure 1 And see Figure 3 In this embodiment, multiple negative pressure suction hoods 350 may be provided on the side of the lower conveyor belt 210 away from the conveyor channel 103 (for ease of display of the negative pressure suction hoods 350, Figure 3 The lower conveyor belt 210 has been removed. The negative pressure suction hood 350 has an opening facing the conveyor belt. At this time, an air extraction chamber 340 is formed between the negative pressure suction hood 350 and the lower conveyor belt 210. The opening of the air extraction chamber 340 is sealed by the lower conveyor belt 210 to ensure that the air extraction chamber 340 is only connected to the outside through the air extraction hole 320. Furthermore, a pipeline is set on one side of the negative pressure suction hood 350. The pipeline is connected to the air extraction component 330. When the air extraction component 330 is working, it will draw air from the air extraction hole 320 through the pipeline and the air extraction chamber 340. This causes the lower front side of the three-dimensional bag to be attracted to the lower conveyor belt 210 by the air extraction hole 320. During the transmission process, the air extraction chamber 340 draws air through the air extraction hole 320 of each part of the negative pressure suction hood 350, thereby forming a positioning end 310 facing the front side of the three-dimensional bag.

[0119] It should be noted that in this embodiment, the upper conveyor belt 230 and the lower conveyor belt 210 share a main drive motor, and power distribution is achieved through synchronous pulleys or gearboxes to ensure that the conveying speeds on both sides are synchronized.

[0120] With this design, a pair of conveyor belts extend symmetrically to each other in the horizontal direction. An air extraction component 330 is provided to extract air from the air extraction hole 320 and adsorb the three-dimensional bag. As the three-dimensional bag moves with the conveyor belts in the conveyor channel 103, it is gradually folded and flattened by the pair of conveyor belts.

[0121] This embodiment also discloses a folding device for a three-dimensional bag; please refer to [link / reference]. Figure 2 It also includes an auxiliary synchronization component 400, which is located on the same side as the upper conveyor belt 230 above. The auxiliary synchronization component 400 engages with the upper front of the three-dimensional bag in the conveying channel 103 and moves synchronously with the three-dimensional bag in the conveying channel 103.

[0122] Specifically, the structure of the auxiliary synchronization component 400 in this embodiment is not limited. For example, the auxiliary synchronization component 400 can be configured as an adsorption unit, a clamping unit, etc.

[0123] For example, in one embodiment, the adsorption unit can be configured as a suction cup, a suction nozzle, an air suction hole, etc., and the adsorption unit is fixed to the corresponding front side of the three-dimensional bag by negative pressure adsorption.

[0124] For example, in one embodiment, the clamping unit can be configured as a claw, a clamping plate, etc. The clamping unit can clamp one of the bag opening edges of the three-dimensional bag by clamping. Those skilled in the art can design or select according to actual needs, and this embodiment does not limit it to a single one.

[0125] With this structural design, the auxiliary synchronization component 400 can be used to position the upper front of the 3D bag, allowing both front sides of the 3D bag to be positioned.

[0126] The embodiment of this invention also discloses a folding device for a three-dimensional bag. The upper conveyor belt 230 includes multiple narrow belts arranged side by side and spaced apart along the width direction of the conveyor channel 103. The multiple narrow belts are wrapped around a pair of pulleys 220, and the pair of pulleys 220 can drive the multiple narrow belts to move synchronously.

[0127] The auxiliary synchronization component 400 includes auxiliary suction units arranged in pairs on both sides of the upper conveyor belt 230. Each pair of auxiliary suction units is opposite to each other in the width direction, and each auxiliary suction unit includes an auxiliary suction member 410, an auxiliary drive member 420, and an auxiliary moving part. The width direction is the width direction of the conveying channel 103, and the width direction of the conveying channel 103 is specifically as follows: Figure 2 As shown in the Z direction.

[0128] Specifically, in this embodiment, for example, two, three, four or other numbers of narrow strips can be arranged at intervals along the width direction of the conveying channel 103, with a narrow strip gap between adjacent narrow strips, so that the auxiliary suction unit can pass through the narrow strip gap and make contact with the corresponding side front of the three-dimensional bag.

[0129] Specifically, in this embodiment, the specific dimensions of the narrow band and the narrow band gap are not limited and can be designed and adjusted according to actual needs. However, preferably, the size of the narrow band gap should be smaller than the width of the front of the three-dimensional bag in the conveying channel.

[0130] The auxiliary drive component 420 is mounted on the frame 100. The auxiliary moving part is movably mounted on the frame 100 along the conveying direction, located outside the upper conveyor belt 230 and connected to the auxiliary drive component 420 in a transmission manner. The auxiliary suction component 410 is mounted on the side of the auxiliary moving part near the upper conveyor belt 230 and can move together with the auxiliary moving part along the conveying direction.

[0131] In this embodiment, the specific structure of the auxiliary moving part and the auxiliary driving component 420 is not limited. For example, the auxiliary moving part can be configured as an auxiliary moving belt, a moving slide rail, a lead screw mechanism, etc.

[0132] For example, in one embodiment, the auxiliary moving part can be configured as an auxiliary moving belt 430 and an auxiliary pulley 440, and the auxiliary driving member 420 can be configured as a drive motor. The drive motor drives the auxiliary pulley 440 to rotate, and then drives the auxiliary moving belt 430 to rotate around the auxiliary pulley 440. Preferably, in this embodiment, the moving speed of the auxiliary moving belt 430 is set to be the same as the moving speed of the conveyor belt.

[0133] For example, in another embodiment, the auxiliary moving part can also be configured as a moving slide rail, the auxiliary driving member 420 can be configured as a driving cylinder, the output end of the driving cylinder is provided with a piston rod, the auxiliary suction member 410 is provided at the end of the piston rod, and the driving cylinder drives the piston rod to move back and forth along the moving slide rail.

[0134] For example, in another embodiment, the auxiliary moving part can also be configured as a lead screw mechanism, the auxiliary suction member 410 is disposed on the lead screw slider, and the auxiliary driving member 420 can be configured as a drive motor. The drive motor drives the lead screw mechanism and drives the lead screw slider and the auxiliary suction member 410 to reciprocate. Those skilled in the art can also configure other structures according to their needs. This embodiment does not limit this to a single structure.

[0135] Furthermore, in this embodiment, please refer to Figure 2Preferably, a pair of auxiliary suction units are provided, which are respectively arranged on both sides of the width direction of the conveying channel 103. The adsorption ends of the pair of auxiliary suction units face the same front side of the three-dimensional bag, making the adsorption more stable.

[0136] See further Figure 2 Each auxiliary suction element 410 has an adsorption end that extends in the width direction above the corresponding side of the 3D bag, facing the upper front of the 3D bag, and the adsorption end can pass through the corresponding narrow band gap to engage with the upper front of the 3D bag.

[0137] With this structure, the upper conveyor belt 230 is set as multiple narrow belts, and the suction end of the auxiliary suction member 410 can pass through the corresponding narrow belt gaps and engage with the upper front side of the three-dimensional bag. The suction holes 320 on the auxiliary suction member 410 and the lower conveyor belt 210 are respectively set to suction and fix the two front sides of the three-dimensional bag, so that the three-dimensional bag will not shift relative to the conveyor belt and be gradually flattened during the conveying process.

[0138] Further preferred, please refer to Figure 2 Each auxiliary moving part includes an auxiliary moving belt 430 disposed on the frame 100, outside the upper conveyor belt 230 and extending along the conveying direction, and a pair of auxiliary pulleys 440 disposed at both ends of the auxiliary moving belt 430, the auxiliary moving belt 430 extending around the pair of auxiliary pulleys 440.

[0139] One end of the auxiliary suction member 410 is fixed to the auxiliary moving belt 430, and the other end has an auxiliary suction cup facing the conveying channel 103, with the auxiliary suction cup extending in the width direction above the corresponding side of the stand-up pouch. More preferably, a drive cylinder can be provided at the end of the auxiliary suction member 410, which can drive the auxiliary suction cup to adjust along the height direction of the conveying channel 103. This design can accommodate stand-up pouches of different thicknesses and sizes.

[0140] The auxiliary drive component 420 is an auxiliary drive motor fixed on the frame 100. The auxiliary drive motor drives the auxiliary pulley 440 to move the auxiliary moving belt 430 and moves the auxiliary suction cup and the three-dimensional bag synchronously in the conveying channel 103.

[0141] This embodiment also discloses a folding device for a three-dimensional bag, see [link to relevant documentation]. Figure 2 Each pair of auxiliary suction units also has a width adjustment component 500. The width adjustment component 500 includes a pair of movable bases 510 that are movably disposed on the frame 100 along the width direction and located on opposite sides of the upper conveyor belt 230. Each auxiliary suction unit is disposed on a corresponding movable base 510.

[0142] The width adjustment component 500 also includes a screw adjustment assembly 520, which extends along the width direction of the conveying channel 103 and is connected to a pair of movable bases 510 in a driving connection. The screw adjustment assembly 520 adopts a positive and negative threaded screw, and when rotating, the screw adjustment assembly 520 can drive the pair of movable bases 510 to move closer to or further away from each other in the width direction.

[0143] Specifically, in this embodiment, the width adjustment component 500 can also be configured as a transmission screw, a transmission belt or other components. The width adjustment component 500 can adjust the spacing between a pair of auxiliary suction units in the width direction of the conveying channel 103. The screw adjustment component 520 has high adjustment accuracy and can be quickly adapted to adjust according to different sizes of three-dimensional bags, making it more widely applicable.

[0144] This embodiment also discloses a folding device for a three-dimensional bag; please refer to [link / reference]. Figure 4 It also includes a side-folding mechanism 600, which includes two side-folding components 610 disposed on the frame 100. The two side-folding components 610 are located on both sides of the conveying channel 103 along the width direction of the conveying channel 103, and both side-folding components 610 are aligned with the middle fold line of the side of the three-dimensional bag in the conveying channel 103.

[0145] Specifically, in this embodiment, the side-folding component 610 can be a side-folding plate, a side-folding turntable, or other components. The side of the side-folding component 610 located in the conveying channel 103 is set as an inclined edge, and the inclined edge gradually extends into the conveying channel 103. With this structural design, when the stand-up pouch is conveyed in the conveying channel 103, the side-folding component 610 will gradually push the side of the stand-up pouch to fold inward. Finally, when the stand-up pouch is flattened, the two side-folding components 610 insert the side of the stand-up pouch into the inside of the folded pouch, making the flattened stand-up pouch more aesthetically pleasing.

[0146] This embodiment also discloses a folding device for a three-dimensional bag; please refer to [link / reference]. Figure 4 The system also includes a bottom folding mechanism 700, which includes at least one bottom folding component mounted on the frame 100. The bottom folding component is located on at least one side of the conveying channel 103 along its width. Each bottom folding component includes a bottom folding drive assembly 702 mounted on the frame 100 and extending along the length of the conveying channel 103, and a bottom folding member 701 mounted on the drive assembly 702. The drive assembly 702 can drive the bottom folding member 701 to move along the length of the conveying channel 103, and the bottom folding member 701 can rotate relative to the drive assembly 702 and extend into the conveying channel 103 to abut against the bottom of the three-dimensional bag. More preferably, in this embodiment, the bottom folding member 701 is configured as a bottom folding hook.

[0147] Specifically, in this embodiment, one, two, or other quantities of folded bag bottom components can be provided. For example, when one folded bag bottom component is provided, it can be placed on one side of the conveying channel 103. When two folded bag bottom components are provided, they can be placed on both sides of the conveying channel 103. However, when two or more quantities are provided, the conveying speed of the multiple folded bag bottom components in the conveying channel 103 needs to be consistent.

[0148] More specifically, in this embodiment, the bottom-folding transmission assembly 702 is configured as a bottom-folding conveyor belt, on which a mounting frame is provided. The bottom-folding component 701 is rotatably mounted on the mounting frame, and the bottom-folding component 701 can rotate relative to the mounting frame under the control of a motor or other components. When the bottom-folding conveyor belt moves, it can drive the mounting frame and the bottom-folding component 701 to move. During the bottom-folding process, the motor controls the bottom-folding component 701 to rotate relative to the frame and then extend into the conveying channel 103 to abut against the bottom of the stand-up pouch. During the flattening process of the stand-up pouch, the bottom of the pouch is abutted against by the bottom-folding component 701 and folded inward. Finally, after the stand-up pouch is flattened and folded, the bottom of the stand-up pouch is folded and inserted into the inside of the pouch, making the flattened stand-up pouch more aesthetically pleasing. Then, the bottom-folding component 701 is reset by the motor to prepare for the folding of the next stand-up pouch.

[0149] In summary, this embodiment discloses a folding device for a three-dimensional bag, see [link to documentation]. Figure 1 and Figure 2 The conveying channel 103 of the bag folding device is provided with a lower conveyor belt 210 and an upper conveyor belt 230. The lower conveyor belt 210 and the upper conveyor belt 230 form the channel side of the conveying channel 103 on the side of the conveying channel 103. A bag synchronization component 300 is provided on the side of the lower conveyor belt 210. The bag synchronization component 300 includes a plurality of suction holes 320 that are evenly distributed in an array and penetrate the lower conveyor belt 210. The plurality of suction holes 320 open towards one side of the conveying channel 103 as positioning ends 310 and adsorb and engage with the front side of the 3D bag on the lower side. The upper conveyor belt 230 is configured as a plurality of narrow belts arranged side by side and spaced apart along the width direction of the conveying channel 103. A pair of auxiliary synchronization components 400 are also provided. The auxiliary synchronization components 400 are configured as auxiliary suction components 410. The suction end of the auxiliary suction component 410 can pass through the corresponding narrow belt gap and engage with the upper front side of the 3D bag.

[0150] When the folded bag is conveyed and folded in the conveyor channel 103, the folded bag enters from the mechanism inlet 101, and the upper front side of the folded bag contacts the upper conveyor belt 230, and the lower front side contacts the lower conveyor belt 210. The conveying speeds of the upper conveyor belt 230 and the lower conveyor belt 210 are the same, and the lower front side of the folded bag is engaged and fixed with the air inlet 320. The upper front side of the folded bag is engaged and fixed with the suction end of the auxiliary suction component 410. When the folded bag is conveyed in the conveyor channel 103, the upper and lower front sides are fixed with the upper conveyor belt 230 and the lower conveyor belt 210 respectively and move synchronously. The two folding side components 610 located on both sides of the width direction of the conveyor channel 103 will insert the side of the folded bag into the folded bag. The folding bottom component will fold the bottom of the folded bag and insert it into the folded bag, making the folded and flattened folded bag more beautiful.

[0151] When the stand-up pouch disclosed in this embodiment is conveyed in the conveying channel 103 by the conveying component 200, the positioning end 310 of the pouch synchronization component 300 moves synchronously with the stand-up pouch conveyed by the conveying component 200 in the conveying channel 103. This prevents the stand-up pouch from slipping or misaligning with the conveying component 200 when it moves in the conveying channel 103, and further prevents the stand-up pouch from deforming, wrinkling or being damaged during the conveying and flattening process. The stand-up pouch is flat and smooth after being folded and flattened, which improves the efficiency of folding and flattening the stand-up pouch and the yield rate.

[0152] The embodiment of this invention also provides a folding device for a three-dimensional bag. In this embodiment, a pair of channel sides of the conveying channel 103 are respectively provided with conveying belts, and each conveying belt includes multiple narrow strips (not shown in the figure) arranged side by side and spaced apart along the width direction of the conveying channel 103. The multiple narrow strips are wrapped around a corresponding pair of pulleys, and the pair of pulleys can drive the multiple narrow strips to move synchronously.

[0153] In other words, the upper conveyor belt 230 and the lower conveyor belt 210 disclosed in this embodiment are both configured to be composed of multiple narrow belts.

[0154] The bag synchronization component 300 includes suction units arranged in pairs on both sides of at least one conveyor belt, wherein each pair of suction units is opposite to each other in the width direction, and each suction unit includes a suction element, a suction drive component, and a suction moving part.

[0155] For example, a pair of suction units can be provided on one side of the upper conveyor belt 230 and the lower conveyor belt 210, or a pair of suction units can be provided on both sides of the upper conveyor belt 230 and the lower conveyor belt 210 respectively. This embodiment does not make specific limitations on this.

[0156] The suction drive component is mounted on the frame 100. The suction moving part is movably mounted on the frame 100 along the conveying direction, located outside the conveyor belt and connected to the suction drive component. The suction element is mounted on the side of the suction moving part close to the conveyor belt and can move together with the suction moving part along the conveying direction.

[0157] Specifically, in this embodiment, one, two, or more bag synchronization components 300 can be provided. For example, when one bag synchronization component 300 is provided, it can be provided on one side of the upper conveyor belt 230 or on one side of the lower conveyor belt 210. When two are provided, the two bag synchronization components 300 are respectively provided on both sides of the upper conveyor belt 230 and the lower conveyor belt 210. Those skilled in the art can design according to actual needs, and this embodiment does not limit it to a single one.

[0158] More specifically, in this embodiment, the specific structure of the suction member, the suction driving member, and the suction moving part is not limited. For example, the suction member can be configured as a suction cup, a suction nozzle, a suction hole, etc., and the suction driving member and the suction moving part can be configured as a drive motor and a drive belt, or as a drive motor and a drive screw, or as a drive cylinder and a drive piston. Those skilled in the art can design or adjust according to actual needs, and this embodiment does not make specific limitations in this regard.

[0159] In this embodiment, the suction end of each suction member extends as a positioning end in the width direction above the corresponding side of the 3D bag, facing the front of the corresponding side of the 3D bag, and the suction end can pass through the corresponding narrow band gap and engage with the front of the corresponding side of the 3D bag.

[0160] More specifically, in this embodiment, the specific size of the gap between the two corresponding narrow bands is not limited and can be designed according to actual needs. However, the gap between the narrow bands must be set to be smaller than the width of one side of the front of the three-dimensional bag being transported in the conveying channel 103.

[0161] With the design of this structure in this embodiment, each conveyor belt is arranged in a narrow belt pattern, which can reduce the friction between the belt and the stacked bag, and the suction device can also pass through the gap of the narrow belt to fix the stacked bag relatively.

[0162] 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.

[0163] 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.

[0164] 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.

[0165] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0166] 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.

[0167] 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 folding device for a three-dimensional bag, characterized in that, The bag folding device includes a frame and a bag folding mechanism disposed on the frame. The bag folding mechanism has a conveying channel from the mechanism inlet to the mechanism outlet and a conveying component that drives the three-dimensional bag to be conveyed in the conveying channel. in The three-dimensional bag within the conveying channel abuts against a pair of channel sides of the conveying channel on two opposite front sides in the thickness direction. Furthermore, in the conveying direction of the three-dimensional bag, the distance between the pair of channel sides of the conveying channel gradually decreases from the mechanism inlet to the mechanism outlet. The bag folding device also includes a bag synchronization component, which has a positioning end facing the conveying channel. The positioning end engages with the front of a corresponding side of the three-dimensional bag in the conveying channel and moves synchronously with the three-dimensional bag in the conveying channel.

2. The folding device for a three-dimensional bag as described in claim 1, characterized in that, In the thickness direction of the three-dimensional bag, the bag body synchronization component is located on the same side and / or the other side of the conveying component relative to the conveying channel.

3. The folding device for a three-dimensional bag as described in claim 1, characterized in that, in Viewed along the thickness direction of the three-dimensional bag, each of the channel sides is a plane extending along the conveying direction; and The conveying component includes at least one conveying unit extending along the conveying direction, each conveying unit having a joint portion movable along the conveying direction on a corresponding side, and having its side surface near the conveying channel aligned with the side portion of the channel on the corresponding side; wherein The joint engages with the front of the corresponding side of the three-dimensional bag in the conveying channel, thereby moving the three-dimensional bag along the side of the channel on the corresponding side within the conveying channel.

4. The folding device for a three-dimensional bag as described in claim 3, characterized in that, in The sides of both channels extend at an angle relative to the conveying direction; and The conveying component includes a pair of conveying units, the joint of each conveying unit being movably disposed along the side of the channel on a corresponding side.

5. The folding device for a three-dimensional bag as described in claim 4, characterized in that, in Each of the conveying units includes a conveyor belt extending along a side of the channel on a corresponding side, the side surface of the conveyor belt near the conveying channel being aligned with the side of the channel as the joint portion; in Each of the conveying units further includes a pair of pulleys respectively disposed at the mechanism inlet and the mechanism outlet, and a belt drive mechanism for driving the pair of pulleys, the conveying belt extending around the pair of pulleys.

6. The folding device for a three-dimensional bag as described in any one of claims 1 to 5, characterized in that, in The bag synchronization component includes a suction unit, the suction end of which serves as the positioning end and adsorbs and engages with the front of the corresponding side of the three-dimensional bag in the conveying channel, moving synchronously with the three-dimensional bag in the conveying channel.

7. The folding device for a three-dimensional bag as described in claim 6, characterized in that, The suction unit includes a plurality of suction holes evenly distributed in an array and penetrating at least one conveyor belt. The suction holes open towards one side of the conveying channel, serving as the positioning end for adsorption and engagement with the corresponding front side of the three-dimensional bag. The bag synchronization component also includes an air extraction component disposed on the frame, and the opening on the other side of each air extraction hole away from the conveying channel is connected to the air extraction component.

8. The folding device for a three-dimensional bag as described in claim 7, characterized in that, in The conveying direction is horizontal, and the pair of conveyor belts extend symmetrically to each other with respect to the horizontal direction. The plurality of air intake holes are disposed through the lower conveyor belt located below and are adsorbed and engaged with the lower front side of the three-dimensional bag in the conveying channel; and Each of the air intake holes on the side of the lower conveyor belt near the conveying channel is connected to the air extraction component through an air extraction chamber, wherein the air extraction chamber is located in the area surrounded by the lower conveyor belt.

9. The folding device for a three-dimensional bag as described in claim 8, characterized in that, It also includes an auxiliary synchronization component, which is located on the same side as the upper conveyor belt above. The auxiliary synchronization component engages with the upper front of the three-dimensional bag in the conveying channel and moves synchronously with the three-dimensional bag in the conveying channel.

10. The folding device for a three-dimensional bag as described in claim 9, characterized in that, The upper conveyor belt includes multiple narrow belts arranged side-by-side and spaced apart along the width direction of the conveying channel. These narrow belts are wrapped around a pair of pulleys, which can drive the multiple narrow belts to move synchronously. The auxiliary synchronization component includes paired auxiliary suction units disposed on both sides of the upper conveyor belt, wherein each pair of auxiliary suction units is opposite to each other in the width direction, and each auxiliary suction unit includes an auxiliary suction component, an auxiliary drive component, and an auxiliary moving part; wherein The auxiliary drive component is mounted on the frame. The auxiliary moving part is movably mounted on the frame along the conveying direction, located outside the upper conveyor belt, and is drively connected to the auxiliary drive component. The auxiliary suction component is located on the side of the auxiliary moving part near the upper conveyor belt and can move together with the auxiliary moving part along the conveying direction. The adsorption end of each of the auxiliary suction devices extends in the width direction above the corresponding side of the 3D bag, facing the upper front of the 3D bag, and the adsorption end can pass through the corresponding narrow band gap to engage with the upper front of the 3D bag.

11. The folding device for a three-dimensional bag as described in claim 10, characterized in that, in Each of the auxiliary moving parts includes an auxiliary moving belt disposed on the frame, outside the upper conveyor belt and extending along the conveying direction, and a pair of auxiliary pulleys disposed at both ends of the auxiliary moving belt, the auxiliary moving belt extending around the pair of auxiliary pulleys; One end of the auxiliary suction component is fixed to the auxiliary moving belt, and the other end has an auxiliary suction cup facing the conveying channel, wherein the auxiliary suction cup extends in the width direction above a corresponding side of the three-dimensional bag; and The auxiliary drive component is an auxiliary drive motor fixed on the frame. The auxiliary drive motor drives the auxiliary pulley to move the auxiliary moving belt and moves the auxiliary suction cup and the three-dimensional bag synchronously in the conveying channel.

12. The folding device for a three-dimensional bag as described in claim 11, characterized in that, Each pair of auxiliary suction units also includes a width adjustment component; wherein The width adjustment component includes a pair of movable bases movably disposed on the frame along the width direction and located on opposite sides of the upper conveyor belt; each of the auxiliary suction units is respectively disposed on a corresponding movable base; and A screw adjusting assembly extends along the width direction of the conveying channel and is kinetically connected to the pair of movable bases. The screw adjusting assembly can drive the pair of movable bases to move closer to or further apart from each other in the width direction.

13. The folding device for a three-dimensional bag as described in claim 6, characterized in that, Each conveyor belt includes multiple narrow belts arranged side-by-side and spaced apart along the width direction of the conveying channel. These narrow belts are wrapped around a corresponding pair of pulleys, and the pair of pulleys can drive the multiple narrow belts to move synchronously. The bag synchronization component includes a pair of suction units disposed on both sides of at least one of the conveyor belts, wherein each pair of suction units is opposite to each other in the width direction, and each suction unit includes a suction element, a suction drive component, and a suction moving part; wherein The suction drive component is mounted on the frame. The suction moving part is movably mounted on the frame along the conveying direction, located outside the conveyor belt, and is drively connected to the suction drive component. The suction element is located on the side of the suction moving part near the conveyor belt and can move together with the suction moving part along the conveying direction. The suction end of each suction member extends as the positioning end in the width direction above the corresponding side of the 3D bag, facing the corresponding front side of the 3D bag, and the suction end can pass through the corresponding narrow band gap to engage with the corresponding front side of the 3D bag.

14. The folding device for a three-dimensional bag as described in any one of claims 1 to 5, characterized in that, It also includes a side-folding mechanism; in The side-folding mechanism includes two side-folding components mounted on the frame. The two side-folding components are located on both sides of the conveying channel along the width direction of the conveying channel, and both side-folding components are aligned with the center crease line of the side of the three-dimensional bag within the conveying channel.

15. The folding device for a three-dimensional bag as described in any one of claims 1 to 5, characterized in that, It also includes a bottom edge folding mechanism; in The bottom folding mechanism includes at least one bottom folding component disposed on the frame. The at least one bottom folding component is located on at least one side of the conveying channel along the width direction of the conveying channel. The bottom folding component includes a bottom folding drive assembly disposed on the frame and extending along the length direction of the conveying channel, and a bottom folding member disposed on the bottom folding drive assembly. The bottom folding drive assembly can drive the bottom folding member to move along the length direction of the conveying channel, and the bottom folding member can rotate relative to the bottom folding drive assembly and extend into the conveying channel to abut against the bottom of the three-dimensional bag.

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