Edge folding device of three-dimensional bag forming equipment and three-dimensional bag forming equipment

Abstract

The utility model discloses an edge folding device of three-dimensional bag forming equipment and the three-dimensional bag forming equipment. The edge folding device comprises a rack and a supporting platform which extends in the conveying direction of sheet materials and is arranged on the rack. A pair of gluing mechanisms and a pair of edge folding mechanisms which are opposite to each other are arranged on the two sides of the supporting platform in the width direction of the rack; each edge folding mechanism comprises a folding assembly and a pressing assembly which are installed on the machine frame, each pressing assembly comprises a first driving component installed on the machine frame and a pressing component in transmission connection with the first driving component, and each folding assembly comprises a second driving component installed on the machine frame and an edge folding plate in transmission connection with the second driving component. During edge folding, the inner side edge of the edge folding part of the three-dimensional bag sheet is pressed on the supporting platform, and the edge folding plate is moved to the pressing state from the horizontal state, so that the purpose of bonding the end part of the lifting handle with the three-dimensional bag sheet positioned on the supporting platform is achieved, and the connecting strength between the lifting handle and the three-dimensional bag body is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the three -dimensional bag forming technical field especially, relate to a kind of folding device, and this folding device can be applied to three -dimensional bag forming equipment. BACKGROUND

[0002] Three-dimensional bag forming equipment is a kind of equipment for producing three-dimensional bag, mainly used for manufacturing environment-friendly bag, especially non-woven bag, paper bag etc..Three-dimensional bag forming equipment can be divided into semi-automatic and full-automatic two types, respectively applicable to different production needs and efficiency requirements.

[0003] Folding is an indispensable step in the process of three-dimensional bag forming equipment in making three-dimensional bag, such as bag mouth folding, bag bottom folding, etc.;And the folding device of three-dimensional bag forming equipment is a kind of equipment for bending the edge of various materials, widely used in folding treatment of sheet material during forming process of three-dimensional bag, such as paper sheet, non-woven fabric, paper and other materials folding.The main function is to bend the edge of material into the required shape to meet different industrial needs.

[0004] However, in the prior art, during the production of three-dimensional bag by three-dimensional bag forming equipment, the handle is first pre-bonded to the folding edge area of three-dimensional bag sheet by the handle threading device of three-dimensional bag forming equipment, then the three-dimensional bag sheet is conveyed to the folding device of three-dimensional bag forming equipment for folding, after folding, the side bonding position during three-dimensional bag forming is coated by the glue coating device of three-dimensional bag forming equipment, and then the three-dimensional bag sheet after threading handle, folding and coating is formed by the forming device of three-dimensional bag forming equipment.

[0005] Therefore, the folding device of three-dimensional bag forming equipment in the prior art only bonds the handle to the folding edge of three-dimensional bag sheet at the handle threading position, only coats the side bonding position during three-dimensional bag forming, and then forms by forming device, which may result in low connection strength between handle and three-dimensional bag body, thereby reducing the overall quality of three-dimensional bag. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the problem that the folding device of three-dimensional bag forming equipment in the prior art does not further fix the handle after folding three-dimensional bag sheet, resulting in low connection strength between handle and three-dimensional bag body, and reducing the quality of three-dimensional bag.

[0007] To solve the above technical problems, the utility model discloses a kind of folding device of three-dimensional bag forming equipment, including rack, support platform is set on the rack along the conveying direction of sheet material extension;Support platform is provided with a pair of gluing mechanism and a pair of folding mechanism on the width direction both sides of rack, each side of support platform gluing mechanism and folding mechanism are sequentially arranged in conveying direction;Wherein, each gluing mechanism is located above support platform, with gluing head towards support platform;And each folding mechanism includes folding subassembly and pressing subassembly installed on the rack.

[0008] Wherein, pressing subassembly includes first driving component installed on the rack, and pressing component is drivingly connected with first driving component, pressing component movably is set above support platform, under the drive of first driving component, the pressing head of pressing component is switched between the initial state of far from support platform and the pressing state of the outer edge of pressing head aligning and pressing the outer edge of support platform.

[0009] Folding subassembly includes second driving component installed on the rack, and folding plate is drivingly connected with second driving component, under the drive of second driving component, folding plate is switched between the flat state of being located below support platform and the pressing state of being pressed the edge of three-dimensional bag sheet material protruding to the folding part of support platform.

[0010] Wherein, on support platform, three-dimensional bag sheet material is conveyed to the region below gluing mechanism in conveying direction, and the part corresponding to at least part of folding part on three-dimensional bag sheet material is coated with glue by the gluing head of gluing mechanism;Three-dimensional bag sheet material continues to be conveyed to the region of corresponding support platform of folding mechanism, first driving component drives pressing component to move from initial state to pressing state, and inner side edge of folding part of three-dimensional bag sheet material is pressed on support platform, and second driving component drives folding plate to move from flat state to pressing state.

[0011] Adopt above technical scheme, in the process of producing stereoscopic bag, need to fold edge when supporting platform, stereoscopic bag sheet material is conveyed to the area below glue spreading mechanism along the conveying direction, the glue spreading head carries out the glue spreading to the position corresponding to at least partial fold edge part on stereoscopic bag sheet material, and, the glue needs to be coated to the position corresponding to the fold edge part on the sheet material and the handle bonding position, then the sheet material which the glue spreading is completed is conveyed to the area of the support platform corresponding to the fold edge mechanism, the first drive part drives the pressing head of the pressing part to be close to the outer edge of the support platform, from the initial state to the pressing state, the inner side edge of the fold edge part on the stereoscopic bag sheet material is pressed on the outer edge of the support platform through the pressing head, at this time, the second drive part drives the fold edge plate to overturn around the conveying direction, the fold edge part of the sheet material is folded along the outer edge of the pressing head, at this time, the crease line is accurately formed on the stereoscopic bag sheet material in the conveying direction, then the first drive part drives the pressing head of the pressing part to move away from the outer edge of the support platform again, and from the pressing state to the initial state, at this time, because the pressing head releases the stereoscopic bag sheet material, the second drive part drives the fold edge plate to continue overturning around the conveying direction towards the stereoscopic bag sheet material, and the fold edge part is pressed and bonded on the stereoscopic bag sheet material located on the support platform, finally make the fold edge plate move from the flat state to the pressing state, realize the purpose that the end of the handle is bonded together with the stereoscopic bag sheet material located on the support platform, improve the connection strength between the handle and the stereoscopic bag body, and guarantee the use quality of the stereoscopic bag.

[0012] In addition, because the fold edge plate pushes the fold edge part of the sheet material to fold the fold edge part along the outer edge of the pressing head, and the outer edge of the pressing head is aligned with the outer edge of the support platform, therefore the position of the crease line formed on the stereoscopic bag sheet material will not be offset, guarantee the accuracy of the fold edge part bending position, and at the same time make the end of the handle can be accurately bonded with the stereoscopic bag sheet material located on the support platform, the position will not be offset.

[0013] Further, the embodiment of the utility model discloses a kind of fold edge device of stereoscopic bag forming equipment, and the side of pressing head close to support platform is formed with avoiding portion, to avoid the position of glue spreading on the stereoscopic bag sheet material on support platform;Support platform is further provided with mounting seat above, one end of mounting seat is fixedly connected with rack, and the other end extends to the above of support platform;Wherein, first drive part includes first drive member mounted on mounting seat, and first transmission member with one end transmission connection with the drive end of first drive member, the other end transmission connection with one end of pressing head, and first drive member drives first transmission member linkage pressing head switches between initial state and pressing state.

[0014] According to the above technical scheme, when the sheet coated with the glue is conveyed to the area of the support platform corresponding to the edge folding mechanism, the first driving member drives the first transmission member to drive the pressing head to move close to the outer edge of the support platform, and to switch from the initial state to the pressing state, so that the pressing head presses the inner side edge of the edge folding part on the three-dimensional bag sheet on the outer edge of the support platform. At this time, since the side of the pressing head close to the support platform is formed with the avoiding part, the pressing head will not contact the area of the three-dimensional bag sheet coated with the glue, and when the pressing head switches from the pressing state to the initial state, the glue on the three-dimensional bag sheet will not be taken away, further ensuring that the handle and the three-dimensional bag sheet on the support platform can be reliably bonded together.

[0015] Further, the embodiment of the utility model discloses an edge folding device of a three-dimensional bag forming equipment, and the pressing part further comprises a sliding connection part which is slidably connected to one end of the mounting seat and extends downwardly towards the middle part of the support platform; the pressing head is fixedly connected to the other end of the sliding connection part on one side and extends downwardly towards the edge of the support platform on the other side; the first driving member is a first driving motor mounted on the mounting seat, and the driving end of the first driving motor penetrates through one end of the mounting seat along the conveying direction and is rotatably connected to the mounting seat; the first transmission member comprises a rotating cam fixedly sleeved on the driving end of the driving motor and a transmission rod rotatably connected to the circumferential edge of the rotating cam on one end and rotatably connected to one end of the sliding connection part on the other end.

[0016] According to the above technical scheme, when the sheet coated with the glue is conveyed to the area of the support platform corresponding to the edge folding mechanism, the first driving motor drives the rotating cam to rotate and drive the transmission rod to move one end of the sliding connection part, so that the other end of the sliding part drives the pressing plate to move obliquely towards the outer edge close to the support platform until the other side of the pressing plate presses the inner side edge of the edge folding part on the three-dimensional bag sheet on the outer edge of the support platform. During this process, since the pressing plate is obliquely arranged, when the second driving part drives the edge folding plate to flip around the conveying direction, the edge folding plate pushes the edge folding part of the sheet to fold the edge folding part along the outer edge of the pressing head, the edge folding part can be folded above the side of the pressing plate away from the support platform, so that the crease line can be formed more completely. When the first driving motor continues to drive the rotating cam to rotate and drive the transmission rod to move one end of the sliding connection part, so that the other end of the sliding part drives the pressing plate to move obliquely away from the outer edge of the support platform, the second driving part drives the edge folding plate to continue to flip around the conveying direction towards the three-dimensional bag sheet again, and presses and bonds the edge folding part on the three-dimensional bag sheet on the support platform, further ensuring that the position of the crease line will not be deviated, and further ensuring that the end of the handle can be accurately bonded with the three-dimensional bag sheet on the support platform.

[0017] Further, the embodiment of the utility model discloses a kind of edge folding device of three-dimensional bag forming equipment, the inclination angle of pressing plate relative to the support plane of support platform is 30 °~90 °, and the avoiding part is the avoiding space between pressing plate and support plane.

[0018] With the above technical scheme, the lower limit value of the inclination angle of the pressing plate relative to the support plane of the support platform is set to 30 °, which can enable the pressing plate to apply sufficient pressure to the sheet of the three-dimensional bag when pressing the inner side edge of the edge folding part on the sheet of the three-dimensional bag against the outer edge of the support platform, so that the position of the sheet of the three-dimensional bag does not shift when the edge folding part is folded.

[0019] In addition, since the pressing plate is inclined relative to the support plane of the support platform, and the edge folding plate is located below the edge folding part of the sheet of the three-dimensional bag, when the edge folding plate pushes the edge folding part to form a crease line and the pressing plate moves away from the support platform, the problem of mutual interference between the pressing plate and the edge folding plate is avoided.

[0020] Further, the embodiment of the utility model discloses a kind of edge folding device of three-dimensional bag forming equipment, the pressing part further includes limiting member installed in the other end of mounting seat;Wherein, limiting member includes the other end fixed in mounting seat, the connecting seat above support platform extends in the direction of conveying, and multiple telescopic pressing parts are arranged on the connecting seat in the direction of conveying, and the upper end of each telescopic pressing part is fixedly connected to the connecting seat, and the other end extends towards support platform along the height direction of rack;Wherein, the lower end of each telescopic pressing part can be switched between the retracted state above support platform and the extended state pressing the sheet of three-dimensional bag on support platform;And in width direction, each telescopic pressing part is located in the inner side edge of corresponding pressing head away from the edge of support platform.

[0021] According to the technical scheme, when the sheet coated with the glue is conveyed to the area of the support platform corresponding to the flanging mechanism, the plurality of telescopic pressing members can be moved downward along the height direction to press and limit the three-dimensional bag sheet on the support platform; thus, when the pressing plate is moved obliquely away from the outer edge of the support platform, the second driving component drives the flanging plate to continue to flip around the conveying direction towards the three-dimensional bag sheet, and the flanging part is pressed and bonded on the three-dimensional bag sheet on the support platform, and since the plurality of telescopic pressing members limit the three-dimensional bag sheet on the support platform, the risk of position deviation of the three-dimensional bag sheet is avoided.

[0022] Further, the embodiment of the utility model discloses a flanging device of a three-dimensional bag forming equipment, the movable seat is movably installed on the frame in the width direction, the third driving component is installed on the movable seat, and the third driving component drives the movable seat to move in the width direction to change the positions of the second driving component and the flanging plate in the width direction.

[0023] According to the technical scheme, the movable seat is movably arranged in the width direction, so that the position of the flanging mechanism in the width direction can be adjusted; specifically, when the sheet coated with the glue is conveyed to the area of the support platform corresponding to the flanging mechanism, the inner side edge of the flanging part is pressed by the pressing head, and then the movable seat is moved by the third driving component, so that the movable seat drives the flanging plate to move to the position directly below the flanging part of the three-dimensional bag sheet, and then the flanging plate is flipped around the conveying direction by the third driving component to perform flanging; therefore, the position of the movable seat in the width direction is changed by the third driving component, so that the flanging plate can adapt to the flanging part of the three-dimensional bag sheet with different width sizes, and the flanging part of the three-dimensional bag sheet is accurately flanged.

[0024] Further, the embodiment of the utility model discloses a flanging device of a three-dimensional bag forming equipment, the movable seat is movably installed on the frame in the width direction, the third driving component is installed on the movable seat, and the third driving component drives the movable seat to move in the width direction to change the positions of the second driving component and the flanging plate in the width direction.

[0025] The third driving motor is in transmission connection with the moving seat through a counter-thrust mechanism, the counter-thrust mechanism comprises a driving cam sleeved on a driving end of the third driving motor, and a rolling rod rotatably connected to a circumferential edge of the driving cam and extending into the strip-shaped opening along a height direction.

[0026] When the sheet coated with the glue is conveyed to the area of the support platform corresponding to the edge folding mechanism, the inner side edge of the edge folding part of the three-dimensional bag sheet is pressed by the pressing head, the driving cam is driven to rotate by the third driving motor, the driving cam applies a driving force to the rolling rod, the rolling rod applies a thrust force to the thrust plate in the width direction through the strip-shaped opening, the thrust plate applies a counter-thrust force to the rolling rod due to the fixed position of the thrust plate, and the thrust plate applies a counter-thrust force to the driving cam, so that the driving cam drives the driving end of the third driving motor and drives the moving seat to move along the width direction and approach the support platform.

[0027] Further, the embodiment of the utility model discloses an edge folding device of a three-dimensional bag forming equipment, and the two side edges of the moving seat are respectively provided with mounting plates along the conveying direction, the second driving part comprises a second driving motor mounted on one mounting plate, and the driving end of the second driving motor passes through one mounting plate along the conveying direction and is rotatably connected with one mounting plate.

[0028] Further, the embodiment of the utility model discloses an edge folding device of a three-dimensional bag forming equipment, and the two side edges of the moving seat are respectively provided with mounting plates along the conveying direction, the second driving part comprises a second driving motor mounted on one mounting plate, and the driving end of the second driving motor passes through one mounting plate along the conveying direction and is rotatably connected with one mounting plate.

[0029] The edge folding transmission member comprises a first transmission gear rotatably arranged on the corresponding mounting plate, a rotating shaft rotatably connected with the corresponding mounting plate along the conveying direction, a second transmission gear fixedly sleeved on the rotating shaft, and a swing rod having one end fixedly sleeved on the rotating shaft and the other end fixedly connected with the end of the corresponding edge folding plate.

[0030] The drive gear meshes with the rotating gear at one end of the corresponding rotating rod, each rotating gear meshes with the corresponding first transmission gear, and each first transmission gear meshes with the corresponding second transmission gear; and the two ends of the folding plate in the conveying direction are respectively fixedly connected to the other end of the corresponding swing rod.

[0031] Using the above technical solution, when the sheet coated with glue is conveyed to the area of ​​the support platform corresponding to the folding mechanism, the inner edge of the folded part of the three-dimensional bag sheet is pressed by the pressing head. Then, the drive gear at the drive end of the second drive motor is driven to rotate. The drive gear then drives the rotating gear at one end of the corresponding rotating rod to rotate. When the rotating gear rotates, it drives the rotating rod to rotate, thereby causing the rotating gears at both ends of the rotating rod to drive their respective first transmission gears to rotate. Then, the rotation of each first transmission gear drives the corresponding second transmission gear to rotate. The rotation of the second transmission gear drives the rotating shaft to rotate. The rotation of the rotating shaft drives the swing arm to swing and realize the folding plate flipping, thus folding the folded part of the three-dimensional bag sheet. In this process, the synchronous and stable folding of both ends of the folding plate can be achieved by a single second drive motor, making the overall structure of the device simpler.

[0032] Furthermore, the meshing relationship between the drive gear and the rotating gear further ensures that the transmission ratio on both sides is consistent, eliminating problems such as wrinkles at the folded edge or inaccurate bonding position between the handle and the three-dimensional bag body caused by transmission errors during the folding process, making the folding device more accurate when in use.

[0033] This utility model also discloses a three-dimensional bag forming device, including the folding device of the three-dimensional bag forming device described above.

[0034] Using the above technical solution, when folding is required during the production of three-dimensional bags, the three-dimensional bag sheet is conveyed along the conveying direction to the area below the gluing mechanism. The gluing head of the gluing mechanism applies glue to the area of ​​the three-dimensional bag sheet corresponding to at least part of the folded edge. The three-dimensional bag sheet continues to be conveyed to the area of ​​the support platform corresponding to the folding mechanism. The first driving component drives the pressing component to move from the initial state to the pressing state, pressing the inner edge of the folded edge of the three-dimensional bag sheet onto the support platform. The second driving component drives the folding plate to move from the flat state to the pressing state, thereby achieving the purpose of bonding the end of the handle to the three-dimensional bag sheet located on the support platform, improving the connection strength between the handle and the three-dimensional bag body. This results in three-dimensional bags produced by this three-dimensional bag forming equipment having better quality of use, and the end of the handle will not easily detach from the bag body during use. Attached Figure Description

[0035] Figure 1The overall structure schematic diagram of the edge folding device of the three-dimensional bag forming equipment provided by the utility model is shown in the figure.

[0036] Figure 2 The overall structure schematic diagram of the edge folding device of the three-dimensional bag forming equipment provided by the utility model is shown in the figure.

[0037] Figure 3 The partial schematic diagram of the edge folding device of the three-dimensional bag forming equipment provided by the utility model is shown in the figure.

[0038] Figure 4 The partial schematic diagram of the edge folding device of the three-dimensional bag forming equipment provided by the utility model is shown in the figure.

[0039] Figure 5 The overall structure schematic diagram of the edge folding device of the three-dimensional bag forming equipment provided by the utility model is shown in the figure.

[0040] Figure 6 The overall structure schematic diagram of the edge folding device of the three-dimensional bag forming equipment provided by the utility model is shown in the figure.

[0041] Figure 7 The partial structure schematic diagram of the third driving component provided by the utility model is shown in the figure.

[0042] Explanation of reference signs:

[0043] 1, rack;

[0044] 10, mounting seat; 11, moving seat; 12, abutting and pushing plate; 13, mounting plate;

[0045] 2, support platform;

[0046] 3, glue applying mechanism;

[0047] 30, glue applying head;

[0048] 4, edge folding mechanism;

[0049] 40, folding assembly; 41, pressing assembly; 42, first driving component; 43, pressing component; 44, second driving component; 45, edge folding plate; 46, third driving component; 47, sliding connection part;

[0050] 400, pressing head; 401, pressing plate; 402, first driving motor; 403, rotating cam; 404, transmission rod; 405, limiting component; 406, telescopic pressing piece; 407, connecting seat; 408, third driving motor; 409, driving cam; 410, rolling rod; 411, second driving motor; 412, driving gear; 413, rotating rod; 414, rotating gear; 415, first transmission gear; 416, rotating shaft; 417, second transmission gear; 418, swing rod.

[0051] 5. Handle threading device;

[0052] W, width direction; L, conveying direction. DETAILED DESCRIPTION

[0053] As described in the background, in the prior art, in the process of producing a three-dimensional bag, a handle threading device of a three-dimensional bag forming device is used to pre-attach a handle to a folded edge area of a three-dimensional bag sheet, then the three-dimensional bag sheet is conveyed to a folded edge device of the three-dimensional bag forming device for folding, after the folding, a glue coating device of the three-dimensional bag forming device is used to coat glue on a side surface attachment position of the three-dimensional bag, and then a forming device of the three-dimensional bag forming device is used to form the three-dimensional bag sheet after the handle threading, folding and glue coating.

[0054] Therefore, the folded edge device of the prior art three-dimensional bag forming device only attaches the handle to the folded edge of the three-dimensional bag sheet at the handle threading position, only coats glue on the side surface attachment position during the forming of the three-dimensional bag, and then forms the three-dimensional bag by the forming device, so that the connection strength of the handle and the three-dimensional bag body is low, thereby reducing the quality of the three-dimensional bag.

[0055] To solve the above problems, the utility model provides a kind of folded edge device of three-dimensional bag forming equipment, including rack, support platform is set on the rack along the conveying direction of sheet material;Support platform is provided with a pair of mutually opposite glue coating mechanism and a pair of folded edge mechanism on the width direction of rack, and glue coating mechanism and folded edge mechanism are sequentially arranged in conveying direction on each side of support platform;Wherein, each glue coating mechanism is located above support platform, with glue coating head towards support platform;And each folded edge mechanism includes folding assembly and pressing assembly installed on rack.The pressing assembly includes first driving component installed on the rack, and the pressing component is in transmission connection with the first driving component, and the folding assembly includes second driving component installed on the rack, and the folded edge plate is in transmission connection with the second driving component.

[0056] When the production of stand-up pouches requires folding the pouch sheet, the sheet is conveyed along the conveying direction to the area below the gluing mechanism on the support platform. The gluing head applies glue to the portion of the pouch sheet corresponding to at least part of the folded edge, and the glue must be applied to the area where the handle will be bonded to the folded edge. The glued sheet is then conveyed to the support platform area corresponding to the folding mechanism. The first drive component drives the pressing head of the pressing component to approach the outer edge of the support platform, switching from the initial state to the pressing state. The pressing head presses the inner edge of the folded edge of the pouch sheet against the outer edge of the support platform. At this time, the second drive component drives the folding plate to rotate around the conveyor belt. When the conveying direction is reversed, the folding plate pushes the folded edge of the sheet material to fold along the outer edge of the pressing head. At this time, a crease line will be accurately formed on the three-dimensional bag sheet in the conveying direction. Then, the first drive component drives the pressing head of the pressing component to move away from the outer edge of the support platform again and switch from the pressing state to the initial state. At this time, the pressing head releases the three-dimensional bag sheet. The second drive component drives the folding plate to continue to rotate around the conveying direction toward the three-dimensional bag sheet, pressing and bonding the folded edge to the three-dimensional bag sheet located on the support platform. The end of the handle is also bonded to the three-dimensional bag sheet located on the support platform, which improves the connection strength between the handle and the three-dimensional bag body and ensures the quality of use of the three-dimensional bag.

[0057] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0058] First, let's explain the overall structure of the stand-up pouch. The stand-up pouch includes a pair of front panels, and side panels located on either side of the pair of front panels along the length of the stand-up pouch. Each side panel connects to the corresponding front panel on both sides along the width of the stand-up pouch. In the height direction, a bottom surface is also provided at the bottom of the front panel. Thus, the stand-up pouch body is formed by the pair of front panels, the pair of side panels, and the bottom surface. The handle of the stand-up pouch is installed on the folded edge of the pouch opening located on the front panel. The folded edge of the pouch opening is the area on the stand-up pouch sheet where the edge forming the front panel needs to be folded during the production of the stand-up pouch.

[0059] Furthermore, such as Figure 1 As shown, the stand-up pouch is produced by a stand-up pouch forming machine. When installing the handle, the handle needs to be fixed to the ends of both sides of the stand-up pouch sheet in the width direction through the handle insertion device 5, which is the area before the bag opening fold is folded. Then, after the ends of both sides of the stand-up pouch sheet in the width direction are folded, the end of the handle is located between the bag opening fold and the front of the stand-up pouch.

[0060] The following is a general description of the folding device of this three-dimensional bag forming equipment.

[0061] As Figure 1 And Figure 2 The utility model discloses a kind of edge folding devices of three-dimensional bag forming equipment, including rack 1, support platform 2 is set on rack 1 along the conveying direction L of sheet material extension;Support platform 2 is provided with a pair of gluing mechanism 3 and a pair of edge folding mechanism 4 opposite each other in the width direction W of rack 1, and gluing mechanism 3 and edge folding mechanism 4 are sequentially arranged in conveying direction L on each side of support platform 2;When the sheet of three-dimensional bag is conveyed along conveying direction L, gluing mechanism 3 can be first used to glue the sheet of three-dimensional bag, and then edge folding mechanism 4 is used to fold edge.

[0062] Specifically, each gluing mechanism 3 is located above support platform 2, with gluing head 30 towards support platform 2;And each edge folding mechanism 4 includes folding assembly 40 and pressing assembly 41 installed on rack 1 for folding the sheet of three-dimensional bag.

[0063] More specifically, pressing assembly 41 includes first drive component 42 installed on rack 1, and pressing component 43 in transmission connection with first drive component 42, and pressing component 43 is movably arranged above support platform 2, and the pressing head 400 of pressing component 43 is switched between the initial state of moving away from support platform 2 and the pressing state of aligning the outer edge of pressing head 400 to press the outer edge of support platform 2 under the drive of first drive component 42.

[0064] More specifically, folding assembly 40 includes second drive component 44 installed on rack 1, and edge folding plate 45 in transmission connection with second drive component 44, and edge folding plate 45 is switched between the flat state below support platform 2 and the pressing state of pressing the edge folding part of the sheet of three-dimensional bag protruding from support platform 2 by turning around conveying direction L under the drive of second drive component 44.

[0065] Further, the working principle of the folding device is as follows: in the process of producing the three-dimensional bag, when the three-dimensional bag sheet needs to be folded, the three-dimensional bag sheet is conveyed to the area below the gluing mechanism 3 along the conveying direction L on the support platform 2, the gluing head 30 glues the part corresponding to the at least partial folding part on the three-dimensional bag sheet, and the glue is at least applied to the position on the part corresponding to the folding part on the three-dimensional bag sheet which is bonded with the handle; then the sheet with the applied glue is conveyed to the area of the support platform 2 corresponding to the folding mechanism 4, the first driving part 42 drives the pressing head 400 of the pressing part 43 to approach the outer edge of the support platform 2, and the state is switched from the initial state to the pressing state, and the inner side edge of the folding part on the three-dimensional bag sheet is pressed on the outer edge of the support platform 2 by the pressing head 400; at this time, the second driving part 44 drives the folding plate 45 to flip around the conveying direction L, and the folding plate 45 pushes the folding part of the sheet to fold the folding part along the outer edge of the pressing head 400, and at this time, a crease line is accurately formed on the three-dimensional bag sheet in the conveying direction L; then the first driving part 42 drives the pressing head 400 of the pressing part 43 to act again away from the outer edge of the support platform 2, and the state is switched from the pressing state to the initial state; at this time, the pressing head 400 releases the three-dimensional bag sheet, and the second driving part 44 drives the folding plate 45 to continue to flip around the conveying direction L towards the three-dimensional bag sheet, and the folding part is pressed and bonded on the three-dimensional bag sheet located on the support platform 2, so that the folding plate 45 moves from the flat state to the pressing state, and at this time, the handle is bonded with the part of the three-dimensional bag sheet corresponding to the folding part on the support platform 2, which improves the connection strength between the handle and the bag body of the three-dimensional bag and ensures the quality of the three-dimensional bag.

[0066] It should be understood that the inner side edge of the folding part on the three-dimensional bag sheet refers to the edge of the folding part close to the support platform 2 in the width direction W.

[0067] In addition, since the folding plate 45 pushes the folding part of the sheet to fold the folding part along the outer edge of the pressing head 400, and the outer edge of the pressing head 400 is aligned with the outer edge of the support platform 2, the position of the crease line formed on the three-dimensional bag sheet will not be offset, so that the crease line can be accurately formed, and at the same time, the end of the handle can be accurately bonded with the three-dimensional bag sheet located on the support platform 2, and the position will not be offset.

[0068] It should be noted that the folding edge part in the present application is the bag opening folding edge of the three-dimensional bag; and the part corresponding to the folding edge part on the three-dimensional bag sheet in the present application is the area on the three-dimensional bag sheet corresponding to the folding edge part in the height direction after folding; it should be understood that the part to be glued on the three-dimensional bag sheet corresponding to at least part of the folding edge part can be the area on the part corresponding to the folding edge part on the three-dimensional bag sheet bonded with the handle end, or 1 / 3, 1 / 4, 1 / 5, etc. of the area of the part corresponding to the folding edge part on the three-dimensional bag sheet, that is, the part corresponding to the folding edge part on the front of the three-dimensional bag is glued, and the gluing position can be 1 / 3, 1 / 4, 1 / 5, etc. of the area of the part, which is not limited in the present embodiment.

[0069] Further as shown in Figure 3 The gluing mechanism 3 further includes a telescopic push rod 31 fixedly installed at one end on the rack 1 and extending in the width direction W and fixedly connected with the gluing head 30 at the other end, so that the position of the gluing head 30 in the width direction W can be changed through the telescopic push rod 31, thereby changing the gluing position of the gluing head 30, so that the gluing position of the gluing head 30 on the folding edge part of the three-dimensional bag sheet changes, and different sizes of three-dimensional bag sheets are adapted. It should be understood that the fixed connection mode can be screw connection, clamping connection, welding, etc., which is not limited in the present embodiment.

[0070] The structure and arrangement of the pressing assembly 41 are further explained below.

[0071] In one embodiment, as shown in Figure 2 The pressing head 400 is formed with a avoiding part on the side close to the support platform 2 to avoid the gluing position on the three-dimensional bag sheet on the support platform 2; the support platform 2 is further provided with a mounting seat 10, one end of the mounting seat 10 is fixedly connected with the rack 1, and the other end extends above the support platform 2; wherein the first driving part 42 includes a first driving member mounted on the mounting seat 10, and a first transmission member having one end in transmission connection with the driving end of the first driving member and the other end in transmission connection with one end of the pressing head 400, and the first driving member drives the first transmission member to link the pressing head 400 to switch between the initial state and the pressing state.

[0072] Specifically, when the sheet coated with glue is conveyed to the area of the corresponding support platform 2 of the edge folding mechanism 4, the first driving member drives the first transmission member to drive the pressing head 400 to approach the outer edge of the support platform 2, and is switched from the initial state to the pressing state, so as to realize that the pressing head 400 presses the inner side edge of the upper edge folding part of the three-dimensional bag sheet on the support platform 2. At this time, since the side of the pressing head 400 close to the support platform 2 is formed with a avoiding part, the pressing head 400 will not be in contact with the area of the three-dimensional bag sheet coated with glue, so that when the pressing head 400 is switched from the pressing state to the initial state, the glue on the three-dimensional bag sheet will not be taken away, further ensuring that the handle and the three-dimensional bag sheet on the support platform 2 can be reliably bonded together.

[0073] More specifically, the structure and setting mode of the first driving member, the first transmission member, and the pressing head 400 are not limited.

[0074] In an implementable embodiment, as shown in Figure 2 and Figure 4 , the pressing member 43 further comprises a sliding connection part 47 which is slidably connected to the mounting seat 10 at one end and extends downwardly and obliquely towards the middle part of the support platform 2 at the other end; the pressing head 400 is arranged to be fixedly connected to the other end of the sliding connection part 47 at one side and extend downwardly and obliquely towards the edge of the support platform 2 at the other side; the first driving member is a first driving motor 402 mounted on the mounting seat 10, and the driving end of the first driving motor 402 penetrates through one end of the mounting seat 10 along the conveying direction L and is rotatably connected to the mounting seat 10; the first transmission member comprises a rotating cam 403 fixedly sleeved on the driving end of the driving motor, and a transmission rod 404 rotatably connected to the circumferential edge of the rotating cam 403 at one end and rotatably connected to one end of the sliding connection part 47 at the other end.

[0075] Specifically, when the sheet coated with glue is conveyed to the area of the corresponding support platform 2 of the folding mechanism 4, the first driving motor 402 drives the rotating cam 403 to rotate the linkage transmission rod 404 to pull one end of the sliding connection part 47 to move, so that the other end of the sliding part drives the pressing plate 401 to tilt and move towards the outer edge of the support platform 2, until the other side of the pressing plate 401 presses the inner side edge of the folding edge part of the three-dimensional bag sheet on the support platform 2. During this process, since the pressing plate 401 is inclined, when the second driving part 44 drives the folding plate 45 to flip around the conveying direction L, the folding plate 45 pushes the folding edge part of the sheet to fold the folding edge part along the outer edge of the pressing head 400, the folding edge part can be folded above the side of the pressing plate 401 away from the support platform 2, so that the crease line can be formed more completely. When the first driving motor 402 continues to drive the rotating cam 403 to link the transmission rod 404 to pull one end of the sliding connection part 47 to move, so that the other end of the sliding part drives the pressing plate 401 to tilt and move away from the outer edge of the support platform 2, the second driving part 44 again drives the folding plate 45 to continue to flip around the conveying direction L towards the three-dimensional bag sheet, and presses the folding edge part to be bonded to the three-dimensional bag sheet on the support platform 2, which further ensures that the position of the crease line will not be offset, so that the end of the handle can be accurately bonded to the part of the three-dimensional bag sheet on the support platform 2 corresponding to the folding edge part.

[0076] In addition, since when the first driving motor 402 continues to drive the rotating cam 403 to link the transmission rod 404 to pull one end of the sliding connection part 47 to move, so that the other end of the sliding connection part 47 drives the pressing plate 401 to tilt and move away from or close to the outer edge of the support platform 2, since the movement trajectory of the pressing plate 401 is inclined, the pressing plate 401 can reduce the risk of moving the three-dimensional bag sheet when pressing or releasing the inner side edge of the folding edge part, further ensuring the accurate position of the crease line.

[0077] In an embodiment, the inclination angle of the pressing plate 401 relative to the support plane of the support platform 2 is 30°-90°, and the avoiding part is the avoiding space between the pressing plate 401 and the support plane. It should be understood that the inclination angle of the pressing plate 401 relative to the support plane of the support platform 2 is the clearance that the cross section between the pressing plate 401 and the support plane is a triangle.

[0078] Specifically, the lower limit of the inclination angle of the pressing plate 401 relative to the support plane of the support platform 2 is set to 30°. On the one hand, when the inner side edge of the folded edge portion of the three-dimensional bag sheet is pressed against the outer edge of the support platform 2, the pressing plate 401 can exert sufficient pressure on the three-dimensional bag sheet, so that the position of the three-dimensional bag sheet does not shift when the folded edge portion is folded. The upper limit of the inclination angle of the pressing plate 401 relative to the support plane of the support platform 2 is set to 90°. On the other hand, there is sufficient space between the pressing plate 401 and the support platform 2, thereby avoiding the risk of contact with the glue application area due to excessive horizontal extension of the pressing plate 401. The upper limit of the inclination angle of the pressing plate 401 relative to the support plane of the support platform 2 is set to 90°, which can further ensure that the pressing plate 401 can exert sufficient pressure on the three-dimensional bag sheet, so that the position of the three-dimensional bag sheet does not shift when the folded edge portion is folded.

[0079] In addition, since the pressing plate 401 is inclined relative to the support plane of the support platform 2, and the folded edge plate 45 is located below the folded edge portion of the three-dimensional bag sheet, when the folded edge plate 45 pushes the folded edge portion to form a crease line and the pressing plate 401 moves away from the support platform 2, the problem of mutual interference between the pressing plate 401 and the folded edge plate 45 is avoided. Furthermore, when the folded edge plate 45 moves towards the edge of the support platform 2, it does not rub against the three-dimensional bag sheet, further ensuring that the position of the three-dimensional bag sheet does not shift.

[0080] It should be further understood that the inclination angle of the pressing plate 401 relative to the support plane of the support platform 2 can be 30°, 45.5°, 90°, etc., which is not limited in the present embodiment.

[0081] In another implementation, the pressing member 43 further includes a connecting frame connected to the mounting seat 10 in the width direction W, the first driving member includes a first driving motor 402 mounted on the mounting seat 10, and an electric push rod mounted on the connecting frame, and the pressing head 400 is provided as a pressing plate mounted on the driving end of the electric push rod. The driving end of the first driving motor 402 is drivingly connected to the mounting frame for driving the mounting frame to move in the width direction W, and the electric push rod is used to drive the pressing plate to move in the height direction; and the pressing plate is arranged in the horizontal direction, and the pressing plate is provided with a avoiding opening as an avoiding portion in the conveying direction L for avoiding the glue application area.

[0082] Specifically, when the sheet coated with glue is conveyed to the area of the support platform 2 corresponding to the folded edge mechanism 4, the first driving motor 402 drives the connecting frame to move in the width direction W towards the edge of the support platform 2, and then the electric push rod moves downward in the height direction through the pressing plate to press the inner side edge of the folded edge portion.

[0083] Further, in one embodiment, as shown in Figure 4 and Figure 5 to prevent the position of the three-dimensional bag sheet from shifting when the folding plate 45 is folded again to make the folded edge adhere to the corresponding position on the three-dimensional bag sheet after the pressing head 400 is moved away from the inner side of the folded edge. The pressing component 43 further comprises a limiting member 405 mounted to the other end of the mounting base 10; the limiting member 405 comprises a connecting base 407 extending above the support platform 2 in the conveying direction L and fixed to the other end of the mounting base 10, and a plurality of telescopic pressing members 406 arranged on the connecting base 407 in the conveying direction L; the upper end of each telescopic pressing member 406 is fixedly connected to the connecting base 407, and the other end extends towards the support platform 2 in the height direction; the lower end of each telescopic pressing member 406 can be switched between a retracted state above the support platform 2 and an extended state pressing the three-dimensional bag sheet on the support platform 2; and in the width direction W, each telescopic pressing member 406 is located on the inner side of the corresponding pressing head 400 away from the edge of the support platform 2.

[0084] Specifically, when the sheet coated with glue is conveyed to the area of the corresponding support platform 2 of the folding mechanism 4, the telescopic pressing members 406 can be moved downward in the height direction to press the three-dimensional bag sheet on the support platform 2 to a limited position on the support platform 2; thus, when the pressing plate 401 is moved obliquely towards the outer edge away from the support platform 2, and the second driving component 44 drives the folding plate 45 to continue to flip around the conveying direction L towards the three-dimensional bag sheet to press the folded edge to adhere to the three-dimensional bag sheet on the support platform 2, the telescopic pressing members 406 limit the three-dimensional bag sheet on the support platform 2, thereby avoiding the risk of the position of the three-dimensional bag sheet shifting. It should be understood that the number of telescopic pressing members 406 is not limited, for example, it can be 2, 3, 5, etc., which is not limited in the present embodiment.

[0085] More specifically, the structure and arrangement of the telescopic pressing members 406 are not limited, for example, the driving cylinder with a rubber pressing disc can be arranged at the driving end, the fixed end of the driving cylinder is fixedly mounted to the connecting base 407, and the driving end extends towards the conveying platform in the height direction; or the electric push rod with a rubber pad can be arranged at the telescopic end, the fixed end of the electric push rod is fixedly mounted to the connecting base 407, and the telescopic end extends towards the conveying platform in the height direction; the structure and arrangement of the telescopic pressing members 406 are not limited in the present embodiment.

[0086] Further, since the glued sheet is conveyed to the area of the corresponding support platform 2 of the flanging mechanism 4, the handle has been bonded to the flanging part of the three-dimensional bag sheet, so that the flanging plate 45 does not interfere with the handle when the glued sheet is conveyed. In an embodiment, the frame 1 is provided with a moving seat 11 below the support platform 2 in the height direction, the moving seat 11 is movably mounted on the frame 1 in the width direction W; and the frame 1 is further provided with a third driving part 46, the third driving part 46 can drive the moving seat 11 to move close to or away from the support platform 2 in the width direction W; and the moving seat 11 is located on the corresponding side of the support platform 2 in the width direction W, the second driving part 44 and the flanging plate 45 are both mounted on the moving seat 11, and the third driving part 46 drives the moving seat 11 to move in the width direction W, so as to change the position of the second driving part 44 and the flanging plate 45 in the width direction W.

[0087] It should be understood that the installation mode of the moving seat 11 movably mounted on the frame 1 can be that a slide rail is arranged on the side of the moving seat 11 close to the frame 1, and then a slide groove matched with the slide rail is arranged on the side of the frame 1 close to the moving seat 11, so as to movably mount the moving seat 11 on the frame 1; the present embodiment is not limited to this, and those skilled in the art can design according to their own needs.

[0088] Specifically, when the glued sheet is conveyed to the area of the corresponding support platform 2 of the flanging mechanism 4, since one end of the handle is fixedly connected with the flanging part, and the other end is downwardly hung in the height direction and located on the corresponding side of the support platform 2 in the width direction W, at this time the third driving part 46 has not driven the moving seat 11 to move close to the support platform 2, when the glued sheet is conveyed to the area of the corresponding support platform 2 of the flanging mechanism 4, the inner side edge of the flanging part is pressed by the pressing head 400, and then the moving seat 11 is driven by the third driving part 46 to move, so that the moving seat 11 drives the flanging plate 45 to move to the position directly below the flanging part of the three-dimensional bag sheet, and then the flanging plate 45 is driven by the second driving part 44 to be flipped in the conveying direction L to perform flanging; at this time, the handle is located between the side of the flanging plate 45 close to the support platform 2 and the support platform 2, avoiding the problem that the handle is flipped to the support platform 2 by the flanging plate 45 in the process of flipping the flanging part.

[0089] Further, the position of the mobile seat 11 in the width direction W is changed by setting the third driving component 46, so that the mobile seat 11 drives the folding plate 45 to move, the position of the folding plate 45 is changed, and further, when the three-dimensional bag sheet material of different width size is replaced, the position of the folding plate 45 is changed to adapt to the folding edge part of the three-dimensional bag sheet material of different width size, so as to realize the purpose of accurately folding the folding edge part of the three-dimensional bag sheet material; and since the position of the folding plate 45 can be changed, when the size of the three-dimensional bag sheet material in the conveying direction L changes, the mobile seat 11 can be driven by the third driving component 46 to drive the folding plate 45 away from the support platform 2, and then the folding plate 45 of different size is replaced to avoid interference with the support platform 2.

[0090] It should be understood that after the second driving component 44 drives the folding plate 45 to flip around the conveying direction L to fold, the third driving component 46 still needs to drive the mobile seat 11 to move away from the support platform 2, so as to avoid interference of the folding plate 45 with the handle during conveying of the next three-dimensional bag sheet material.

[0091] More specifically, the structure and setting mode of the third driving component 46 are not limited, and a person skilled in the art can design according to his own needs, which is not limited in the embodiment, and will be described below by way of example.

[0092] In one embodiment, as shown in Figures 5-7 the bracket 1 is further fixedly provided with a pushing plate 12 opposite to the mobile seat 11 in the height direction, and a strip-shaped opening is formed in the pushing plate 12 along the conveying direction L; and the third driving component 46 is installed on the mobile seat 11, and the third driving component 46 includes a third driving motor 408 installed on the lower side wall surface of the mobile seat 11 in the height direction, and the driving end of the third driving motor 408 penetrates through the mobile seat 11 in the height direction and is in transmission connection with the mobile seat 11.

[0093] Specifically, the third driving motor 408 is in transmission connection with the mobile seat 11 through a pushing mechanism, wherein the pushing mechanism includes a driving cam 409 sleeved on the driving end of the third driving motor 408, and a rolling rod 410 having one end rotatably connected to the circumferential edge of the driving cam 409 and the other end extending into the strip-shaped opening in the height direction.

[0094] More specifically, when the glue-coated sheet is transported to the area of the corresponding support platform 2 of the flanging mechanism 4, after the inner side edge of the flanged part of the three-dimensional bag sheet is pressed by the pressing head 400, the third driving motor 408 drives the driving cam 409 to have a rotating tendency, at this time, the driving cam 409 applies a driving force to the rolling rod 410, then the rolling rod 410 applies a pressing force to the push plate 12 in the width direction W through the strip-shaped hole, and since the push plate 12 is fixed in position, the push plate 12 applies a counterforce to the rolling rod 410, at this time, the push plate 12 applies a counterforce to the driving cam 409, the counterforce applied to the driving cam 409 is applied to the driving end of the third driving motor 408 through the driving cam 409, then the third driving motor 408 applies the counterforce to the moving seat 11, so that the moving seat 11 moves along the width direction W to approach the support platform 2, through the arrangement of the driving structure, the third driving motor 408 is arranged below the moving seat 11 instead of above, without occupying the size of the flanging device in the width direction W, so that the structure of the flanging device is more compact.

[0095] In another embodiment, the third driving component 46 includes a driving cylinder fixedly installed on the frame 1, and the driving end of the driving cylinder is fixedly connected to the side of the moving seat 11 away from the support platform 2, for driving the moving seat 11 to move away from or approach the corresponding side of the support platform 2 along the width direction W.

[0096] The structure and arrangement of the second driving component and the connection relationship between the second driving component 44 and the flanging plate 45 are further explained below.

[0097] In an embodiment, along the conveying direction L, the two side edges of the moving seat 11 are respectively provided with the mounting plate 13, the second driving component 44 includes the second driving motor 411 installed on one mounting plate 13, the driving end of the second driving motor 411 penetrates through one mounting plate 13 along the conveying direction L and is rotationally connected with one mounting plate 13; and the driving end of the second driving motor 411 is drivingly connected with the flanging plate 45 through the intermediate transmission mechanism, the second driving motor 411 drives the flanging plate 45 to fold the corresponding side of the flanged part of the three-dimensional bag sheet along the edge of the pressing head 400 around the conveying direction L.

[0098] Specifically, the structure and arrangement of the intermediate transmission mechanism are not limited, and those skilled in the art can design according to their own needs, which are described below by way of example.

[0099] In an embodiment, the intermediate transmission mechanism comprises corresponding flange transmission members mounted on each mounting plate 13, and a second transmission member arranged along the conveying direction L and having two ends respectively in transmission connection with the corresponding flange transmission members; wherein the second transmission member comprises a driving gear 412 fixedly sleeved on the driving end of the second driving motor 411 and rotatable about the conveying direction L, a rotating rod 413 arranged along the conveying direction L and having two ends respectively in rotational connection with the corresponding mounting plates 13, and corresponding rotating gears 414 fixedly sleeved on the two ends of the rotating rod 413.

[0100] Specifically, the flange transmission member comprises a first transmission gear 415 arranged on the corresponding mounting plate 13 and rotatable about the conveying direction L, a rotating shaft 416 arranged along the conveying direction L and in rotational connection with the corresponding mounting plate 13, a second transmission gear 417 fixedly sleeved on the rotating shaft 416, and a swing rod 418 having one end fixedly sleeved on the rotating shaft 416 and the other end fixedly connected with the end of the corresponding flange plate 45.

[0101] More specifically, the driving gear 412 is in meshing engagement with the rotating gear 414 at one end of the corresponding rotating rod 413, each rotating gear 414 is in meshing engagement with the corresponding first transmission gear 415, and each first transmission gear 415 is in meshing engagement with the corresponding second transmission gear 417; and the two ends of the flange plate 45 in the conveying direction L are respectively fixedly connected with the other ends of the corresponding swing rods 418.

[0102] More specifically, when the sheet coated with glue is conveyed to the area of the corresponding support platform 2 of the flanging mechanism 4, after the inner side edge of the flanged part of the three-dimensional bag sheet is pressed by the pressing head 400, the driving gear 412 at the driving end of the second driving motor 411 is driven to rotate, then the driving gear 412 drives the rotating gear 414 at one end of the corresponding rotating rod 413 to rotate, then the rotating gear 414 drives the rotating rod 413 to rotate when rotating, so that the rotating gears 414 at the two ends of the rotating rod 413 drive the corresponding first transmission gears 415 to rotate, then each first transmission gear 415 drives the corresponding second transmission gear 417 to rotate, the second transmission gear 417 drives the rotating shaft 416 to rotate, and the rotating shaft 416 drives the swing rod 418 to swing to realize the overturning of the flange plate 45, thereby realizing the flanging of the flanged part of the three-dimensional bag sheet. In this process, one second driving motor 411 can realize the synchronous and stable folding of the two ends of the flange plate 45, so that the structure of the device as a whole is simpler.

[0103] In addition, the meshing relationship between the driving gear 412 and the rotating gear 414 further ensures that the transmission ratios on both sides are consistent, eliminates the problems of wrinkles in the flanged part or inaccurate bonding position of the handle and the three-dimensional bag body caused by transmission errors during the flanging process, so that the flanging device has a higher yield rate when in use.

[0104] It needs to be understood that, in the width direction W, the edge of the corresponding side of the support platform 2 and the area corresponding to the swing rod 418 are also provided with a recessed avoidance area towards the middle of the support platform 2, so that the swing rod 418 is not blocked by the edge of the support platform 2 when swinging, so that the hemming plate 45 can completely fold the hemming part.

[0105] In another embodiment, the intermediate transmission mechanism is arranged in transmission connection with the driving end of the second driving motor 411 at one end and fixed connection with the end of the corresponding hemming plate 45 at the other end, and the swing arm is driven to swing through the second driving motor 411, so as to realize the overturning of the hemming plate 45. It needs to be understood that the edge of the corresponding side of the support platform 2 and the area corresponding to the swing arm also need to be provided with a recessed avoidance area towards the middle of the support platform 2.

[0106] Further, the utility model discloses a kind of forming equipment of three-dimensional bag, including the hemming device of above-mentioned three-dimensional bag forming equipment.

[0107] The three-dimensional bag forming equipment needs to be hemmed in the process of producing three-dimensional bag, and the three-dimensional bag sheet is conveyed to the area below the gluing mechanism 3 along the conveying direction L, the gluing head 30 of the gluing mechanism 3 is coated with glue on the part corresponding to at least part of the hemming part on the three-dimensional bag sheet;The three-dimensional bag sheet continues to be conveyed to the area of the corresponding support platform 2 of the hemming mechanism 4, the first driving part 42 drives the compression part 43 to move from the initial state to the compression state, and the inner side edge of the hemming part of the three-dimensional bag sheet is compressed on the support platform 2, and the second driving part 44 drives the hemming plate 45 to move from the flat state to the pressing state, so as to realize the purpose of bonding the end of the handle and the three-dimensional bag sheet on the support platform 2, improve the connection strength between the handle and the three-dimensional bag body, so that the quality of the three-dimensional bag produced by the three-dimensional bag forming equipment is better, and the end of the handle will not easily separate from the bag body in the use process.

[0108] The above describes the embodiments of the present application by specific examples, and the person skilled in the art can easily understand other advantages and effects of the present application from the disclosure. Although the description of the present application is introduced in combination with the preferred embodiments, it does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications which can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0109] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0110] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0111] The terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0112] In the description of the present embodiment, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

[0113] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail in combination with the drawings.

Claims

1. A hemming device for a three-dimensional bag forming apparatus, characterized by, The machine comprises a rack, a support platform arranged on the rack and extending along the conveying direction of the sheet material, a pair of gluing mechanisms and a pair of edge folding mechanisms arranged on both sides of the support platform in the width direction of the rack, the gluing mechanisms and the edge folding mechanisms on each side of the support platform are arranged in sequence in the conveying direction, wherein each of the gluing mechanisms is located above the support platform and has a gluing head facing the support platform, and each of the edge folding mechanisms comprises a folding assembly and a pressing assembly mounted on the rack, wherein the pressing assembly comprises a first driving component mounted on the rack and a pressing component in driving connection with the first driving component, the pressing component is movably arranged above the support platform, and the pressing head of the pressing component is switched between an initial state of moving away from the support platform and a pressing state of aligning and pressing the outer edge of the support platform at the outer edge of the pressing head under the driving of the first driving component; the folding assembly comprises a second driving component mounted on the rack and a folding plate in driving connection with the second driving component, the folding plate is switched between a flat state located below the support platform and a pressing state of pressing the edge folding part of the three-dimensional bag sheet material protruding from the support platform under the driving of the second driving component; wherein on the support platform, the three-dimensional bag sheet material is conveyed to the area below the gluing mechanism in the conveying direction, the gluing head of the gluing mechanism applies glue to the part of the three-dimensional bag sheet material corresponding to at least part of the edge folding part, the three-dimensional bag sheet material continues to be conveyed to the area of the corresponding support platform of the edge folding mechanism, the first driving component drives the pressing component to move from the initial state to the pressing state to press the inner side edge of the edge folding part of the three-dimensional bag sheet material on the support platform, and the second driving component drives the folding plate to move from the flat state to the pressing state.

2. The hemming apparatus of a three-dimensional bag forming apparatus as claimed in claim 1, wherein The side of the pressing head close to the support platform is formed with a avoiding part to avoid the gluing position on the three-dimensional bag sheet material on the support platform, and a mounting seat is further arranged above the support platform, one end of the mounting seat is fixedly connected with the rack, and the other end extends above the support platform, wherein the first driving component comprises a first driving member mounted on the mounting seat, a first transmission member in driving connection at one end with the driving end of the first driving member and in driving connection at the other end with one end of the pressing head, and the first driving member drives the first transmission member to link the pressing head to switch between the initial state and the pressing state.

3. The hemming apparatus of a three-dimensional bag forming apparatus as claimed in claim 2, wherein The pressing component further comprises a sliding connection part slidably connected at one end to the mounting seat and extending obliquely downward toward the middle of the support platform, and the pressing head is arranged to be fixedly connected at the other end of the sliding connection part and to extend obliquely downward toward the edge of the support platform. The first driving member is a first driving motor mounted on the mounting seat, and a driving end of the first driving motor penetrates one end of the mounting seat in the conveying direction and is rotationally connected with the mounting seat; The first transmission member includes a rotating cam fixedly sleeved on the driving end of the driving motor, and a transmission rod rotationally connected at one end with a circumferential edge of the rotating cam and at the other end with one end of the sliding connection part.

4. The hemming apparatus of claim 3, wherein The inclination angle of the pressing plate relative to the support plane of the support platform is 30°-90°, and the avoiding part is an avoiding space between the pressing plate and the support plane.

5. The hemming apparatus of claim 2, wherein The pressing component further includes a limiting member mounted on the other end of the mounting seat; wherein, The limiting member includes a connecting seat fixed on the other end of the mounting seat and extending above the support platform in the conveying direction, and a plurality of telescopic pressing members arranged at intervals on the connecting seat in the conveying direction, wherein the upper end of each telescopic pressing member is fixedly connected to the connecting seat, and the other end extends toward the support platform in the height direction of the rack; wherein the lower end of each telescopic pressing member can be switched between a retracted state above the support platform and an extended state pressing the three-dimensional bag sheet on the support platform; and In the width direction, each telescopic pressing member is located on the inner side edge of the corresponding pressing head away from the edge of the support platform.

6. The hemming apparatus of a three-dimensional bag forming apparatus as claimed in claim 2, wherein In the height direction of the rack, the rack is provided below the support platform with a moving seat movably mounted on the rack in the width direction; and the rack is further provided with a third driving component, which can drive the moving seat to move closer to or away from the support platform in the width direction; and In the width direction, the moving seat is located on the corresponding side of the support platform, and the second driving component and the flange plate are mounted on the moving seat, and the third driving component drives the moving seat to move in the width direction to change the positions of the second driving component and the flange plate in the width direction.

7. The hemming apparatus of claim 6, wherein the hemming apparatus is configured to form a hem on the bag by folding the bag over on itself. The rack is further provided with a push plate opposite to the moving seat in the height direction, and a strip-shaped opening is formed in the push plate in the conveying direction; and The third driving component is mounted on the moving seat, and the third driving component includes a third driving motor mounted on the lower side wall surface of the moving seat in the height direction, and a driving end of the third driving motor penetrates the moving seat and is transmissionally connected with the moving seat in the height direction; wherein The third driving motor and the moving seat are transmissionally connected through a reverse thrust mechanism, wherein the reverse thrust mechanism includes a driving cam sleeved on the driving end of the third driving motor, and a rolling rod rotationally connected at one end with a circumferential edge of the driving cam and extending into the strip-shaped opening in the height direction at the other end.

8. The hemming apparatus of claim 6 wherein, Along the conveying direction, two side edges of the moving seat are respectively provided with a mounting plate, the second driving component comprises a second driving motor mounted on one of the mounting plates, and a driving end of the second driving motor penetrates through one of the mounting plates along the conveying direction and is rotationally connected with one of the mounting plates; The driving end of the second driving motor is in transmission connection with the edge folding plate through an intermediate transmission mechanism, and the second driving motor drives the edge folding plate to fold the edge folding part of the corresponding side of the three-dimensional bag material along the edge of the pressing head around the conveying direction through the intermediate transmission mechanism.

9. The hemming apparatus of a three-dimensional bag forming apparatus as claimed in claim 8, wherein Wherein The intermediate transmission mechanism comprises edge folding transmission members corresponding to the mounting plates, and a second transmission member arranged along the conveying direction and in transmission connection with the edge folding transmission members at two ends thereof; wherein The second transmission member comprises a driving gear fixedly sleeved on the driving end of the second driving motor and rotatable around the conveying direction, a rotating rod arranged along the conveying direction and in rotational connection with the mounting plates at two ends thereof, and rotating gears corresponding to the rotating rod and fixedly sleeved on two ends of the rotating rod; The edge folding transmission member comprises a first transmission gear arranged on the corresponding mounting plate and rotatable around the conveying direction, a rotating shaft arranged along the conveying direction and in rotational connection with the mounting plate, a second transmission gear fixedly sleeved on the rotating shaft, and a swing rod having one end fixedly sleeved on the rotating shaft and the other end fixedly connected with the end of the corresponding edge folding plate; wherein The driving gear is in meshing connection with the rotating gear at one end of the corresponding rotating rod, each rotating gear is in meshing connection with the corresponding first transmission gear, each first transmission gear is in meshing connection with the corresponding second transmission gear, and the two ends of the edge folding plate in the conveying direction are respectively fixedly connected with the other ends of the corresponding swing rods.

10. A forming apparatus for a three-dimensional bag, characterized by An edge folding device of a three-dimensional bag forming equipment according to any one of claims 1-9.

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