A material packaging seaming apparatus and method

Abstract

The application provides a material packaging seam equipment, which mainly solves the problem of poor seam position and seam effect of the packaging bag after being sewn by the material packaging seam equipment in the prior art. The equipment comprises a bag pushing device, a feeding device arranged above the bag pushing device, a lifting type bag supporting rod bag clamping device arranged on the feeding device, a bag folding machine and a sewing device arranged adjacent to one side of the bag pushing device, and an air floating bag mouth aligning device arranged on the bag folding machine. The bag pushing device comprises a flat plate arranged below the lifting type bag supporting rod bag clamping device, a walking bag holding mechanism, and a bag supporting mechanism arranged on the walking bag holding mechanism. The bag supporting mechanism comprises two bag supporting assemblies. The lifting type bag supporting rod bag clamping device comprises at least two groups of servo cylinders and at least two groups of bag supporting assemblies. The two groups of servo cylinders are arranged on the two sides of the feeding device respectively. The length of the clamping part of the bag folding machine is not less than the bag mouth length of the packaging bag. The sewing device is used for sewing the bag mouth of the packaging bag after being folded.

Description

Technical Field

[0001] The present invention relates to a packaging device and method, and in particular to a material packaging seam device and method. Background Art

[0002] In the process of packaging bags, the existing material packaging seaming equipment has inconsistent folding positions of the packaging bag openings due to the discreteness of the specifications and material properties of the packaging bags. In addition, the shape of the packaging bag openings is easily changed when entering the seaming device for sewing, which leads to large differences in the seaming status of the packaging bags.

[0003] Therefore, the material packaging seaming equipment in the prior art has poor seam position and seam effect on the packaging bag after the packaging bag is sewn. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art of poor seam position and seam effect of the material packaging seam equipment after the packaging bag is sewn, and to provide a material packaging seam equipment and method.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A material packaging seaming device, which is special in that it includes: a bag pushing device, a feeding device arranged above the bag pushing device, a lifting bag holding rod bag clamping device arranged on the feeding device, a folding machine and a sewing device arranged in sequence along the conveying direction of the packaging bag on one side of the bag pushing device, and an air flotation bag opening device installed on the folding machine;

[0007] The bag pushing device includes a flat plate located below the lifting bag holding rod bag clamp, a walking bag holding mechanism for holding the bag and transferring the bag to the folding machine, and a bag supporting mechanism provided on the walking bag holding mechanism, the bag supporting mechanism including two bag supporting assemblies symmetrically arranged along the conveying direction of the bag;

[0008] The lifting bag-holding rod bag clamp includes at least two sets of servo electric cylinders and at least two sets of bag-holding assemblies. The two sets of servo electric cylinders are respectively arranged on both sides of the unloading device. The servo electric cylinders can be used to perform effective servo control to drive the bag-holding assemblies to move up and down accurately.

[0009] The length of the clamping part of the folding machine is not less than the length of the bag opening of the packaging bag; and the sewing device is used to sew the opening of the packaging bag after folding.

[0010] Furthermore, the air flotation bag opening device includes a fixed base installed above the folding machine, two rotating shafts, two swing frames, a driving component, and two blowing components;

[0011] The two rotating shafts are rotatably connected to the fixing base;

[0012] The two swing frames are fixedly connected to the two rotating shafts respectively;

[0013] The driving assembly is connected to the two rotating shafts and is used to drive the two rotating shafts to rotate, thereby driving the two swing frames to move closer or apart;

[0014] The two blowing assemblies are respectively located under the two swing frames and are fixedly connected to the swing frames;

[0015] A second gap for the packaging bag to pass through is provided between the two blowing assemblies, and a first gap is provided between the two swing frames, and the first gap is larger than the second gap;

[0016] The two blowing assemblies blow air toward the second gap respectively, so that the packaging bag is in a suspended state along its conveying direction and adapts to the speed of the folding machine.

[0017] Furthermore, the blowing assembly includes a blowing plate, a first connecting plate closely attached to the upper side of the blowing plate, and a second connecting plate closely attached to the lower side of the blowing plate;

[0018] The blowing plates of the two blowing assemblies are each provided with a plurality of blowing holes on one side thereof close to each other, and the plurality of blowing holes are arranged along the length direction of the blowing plates;

[0019] The air blowing plate is provided with an air guiding groove along its length, and the plurality of air blowing holes are all connected to the air guiding groove;

[0020] The air guide groove is provided with a connecting hole for connecting to an external air source.

[0021] Furthermore, the driving assembly includes an air flotation bag cylinder and two synchronous gears and two connecting frames respectively fixedly connected to one end of the two rotating shafts;

[0022] The two synchronous gears are meshed with each other;

[0023] One end of the two connecting frames is fixed on two rotating shafts respectively, the other end of one connecting frame is hinged to the fixed end of the air flotation bag cylinder, and the other end of the other connecting frame is hinged to the movable end of the air flotation bag cylinder.

[0024] Furthermore, the support bag assembly includes a connecting rod, a connecting piece, an upper support bag portion and a lower support bag portion;

[0025] The connecting member includes a vertical plate and an upper horizontal plate and a lower horizontal plate respectively connected to the upper and lower ends of one side of the vertical plate;

[0026] The other side of the vertical plate is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is used to connect the walking bag holding mechanism of the bag pushing device; the upper horizontal plate is connected to the middle of the length direction of the upper bag holding part, and the lower horizontal plate is connected to the middle of the length direction of the lower bag holding part;

[0027] There is a first distance between the upper supporting bag parts of the two bag-supporting assemblies, and a second distance between the lower supporting bag parts of the two bag-supporting assemblies. The first distance is greater than the second distance. When supporting the bag, the upper edge of the packaging bag opening can be relaxed and the lower edge can be clamped, which is convenient for pulling out the bag-supporting assembly.

[0028] Furthermore, the lower support bag portion includes a flexible rubber strip and a lower connecting plate;

[0029] The middle portion of the lower connecting plate is connected to the lower transverse plate, and a plurality of mounting holes are provided on the inner side of the lower connecting plate;

[0030] The flexible rubber strip includes a rubber strip and several hollow elliptical rings arranged side by side on the outside of the rubber strip; the inner side of the rubber strip is used to contact the packaging bag when supporting the bag; a fixing block is provided on the other side of the hollow elliptical ring opposite to the rubber strip, and the fixing block is installed in the mounting hole.

[0031] Furthermore, the upper bag-supporting portion includes a rubber tube and an upper connecting plate arranged on the outside of the rubber tube; the inner side of the rubber tube is arranged as a curved surface for contacting the packaging bag when supporting the bag;

[0032] The middle portion of the upper connecting plate is connected to the upper transverse plate.

[0033] At the same time, the present invention also provides a material packaging seam method, which is special in that it includes the following steps:

[0034] Step 1: The servo electric cylinder extends downward for the first time, so that the bag support assembly contacts the upper edge of the packaging bag and determines the position of the bag opening;

[0035] Add materials to the packaging bag;

[0036] Step 2: Open the bag opening by using the bag opening assembly;

[0037] Step 3: The servo electric cylinder extends downward for the second time until the bottom of the packaging bag contacts the flat plate of the bag pushing device and the bag opening is at the same height from the bag pushing flat plate;

[0038] Step 4: The walking bag holding mechanism holds the bag, and at the same time, the bag supporting mechanism clamps the entire opening of the bag, and clamps the lower edge of the opening of the bag and relaxes the upper edge;

[0039] Step 5: Move the bag support assembly upward and out of the packaging bag by raising the servo electric cylinder;

[0040] Step 6: The walking bag holding mechanism sends the packaging bag into the folding machine, and the folding machine clamps the packaging bag mouth;

[0041] At the same time, the air flotation bag opening device is started to blow air toward the bag opening along the conveying direction of the bag, so that the bag is suspended along the conveying direction and adapts to the conveying speed of the folding machine;

[0042] Step 7: The folding machine folds the edge of the packaging bag;

[0043] Step 8: The sewing device sews the folded packaging bag.

[0044] Furthermore, before step 1, the packaging bag is sent to the discharge port of the unloading device for bagging, and the position of the packaging bag is made consistent with the position of the lifting bag support rod bag clamp.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] 1. The servo electric cylinder can accurately control the descending distance and descending speed of the bag support assembly. The secondary extension of the servo electric cylinder can adjust the descending distance according to the different specifications of the packaging bags, so that the position of the packaging bag opening is always consistent, and the folding width of the bag opening is consistent.

[0047] 2. The folding machine can completely clamp the bag mouth to prevent the bag from rebounding, causing the bag mouth to deform and resulting in poor folding effect.

[0048] 3. The bag supporting assembly can fully feed the packaging bag into the folding machine and release it only after the folding machine clamps it, which can ensure that the packaging bag does not deform during the docking process. In addition, the bag supporting assembly can make the upper edge of the packaging bag opening relatively loose and the lower edge clamped during the process of clamping the packaging bag opening, which is convenient for pulling out the bag supporting assembly.

[0049] 4. The air-floating bag opening device can blow air in the conveying direction of the packaging bag during the folding process, so that the packaging bag opening is suspended along the conveying direction. It can effectively maintain the shape of the packaging bag opening during the folding process and can adapt to the conveying speed of the conveyor belt on the folding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a material packaging seam device and method according to the present invention;

[0051] Figure 2 This is a front view of an embodiment of a material packaging seam device and method according to the present invention;

[0052] Figure 3 yes Figure 2 Left view of;

[0053] Figure 4 This is a structural diagram of a lifting bag-holding rod bag clamp in an embodiment of a material packaging seam opening device and method of the present invention;

[0054] Figure 5 This is a structural diagram of a package pushing device in an embodiment of a material packaging seam opening device and method of the present invention;

[0055] Figure 6 This is a schematic diagram of the assembly of a folding machine and an air-floating bag-opening device in an embodiment of a material packaging seam-opening device and method of the present invention;

[0056] Figure 7 This is a structural diagram of a folding machine in an embodiment of a material packaging seam device and method of the present invention;

[0057] Figure 8 This is a structural diagram of an air-floating bag-opening device in an embodiment of a material packaging seam-opening device and method of the present invention;

[0058] Figure 9 This is a structural diagram of a driving component of an air flotation bag opening device in an embodiment of a material packaging seam opening device and method of the present invention;

[0059] Figure 10 This is a structural diagram of the blowing component of the air flotation bag opening device in an embodiment of a material packaging seam opening device and method of the present invention;

[0060] Figure 11 This is a structural diagram of the blowing plate of the air floating bag opening device in an embodiment of a material packaging seam opening device and method of the present invention.

[0061] In the figure, 1-bag pushing device, 11-bag supporting mechanism, 111-connecting rod, 112-connecting piece, 113-upper bag supporting part, 1131-rubber tube, 1132-upper connecting plate, 114-lower bag supporting part, 1141-rubber strip, 1142-hollow oval ring, 1143-lower connecting plate, 12-frame, 13-flat plate, 14-walking bag holding mechanism, 15-driving mechanism, 2-unloading device, 3-lifting bag supporting Rod bag clamp, 31-servo electric cylinder, 32-bag support assembly, 4-folding machine, 5-air flotation bag opening device, 51-fixed seat, 52-rotating shaft, 53-swing frame, 54-driving assembly, 541-air flotation bag cylinder, 542-synchronizing gear, 543-connecting frame, 55-blowing assembly, 551-blowing plate, 552-first connecting plate, 553-second connecting plate, 554-blowing hole, 555-air guide groove. DETAILED DESCRIPTION

[0062] To further clarify the objectives, advantages, and features of the present invention, the following detailed description of the material packaging seam-forming device and method proposed by the present invention is provided in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent through the following detailed description. It should be noted that the accompanying drawings are highly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the objectives of the embodiments of the present invention. Furthermore, the structures shown in the accompanying drawings are often portions of actual structures.

[0063] like Figures 1-11 As shown, the present invention is a material packaging seaming device, comprising a bag pushing device 1, a feeding device 2 arranged on the upper side of the bag pushing device 1, a lifting bag support rod bag clamp 3 arranged on the feeding device 2, a folding machine 4 and a sewing device arranged adjacent to the bag pushing device and arranged in sequence along the packaging bag conveying direction, and an air flotation bag opening device 5 installed on the upper side of the folding machine 4, as shown in FIG. Figure 6 shown.

[0064] like Figure 5 As shown, the bag pushing device 1 includes a frame 12, a flat plate 13 located below the lifting bag holding rod bag clamp 3, a walking bag holding mechanism 14 for holding the bag and transferring the packaging bag to the folding machine 4, a driving mechanism 15 and a bag supporting mechanism 11 arranged on the walking bag holding mechanism 14. The bag supporting mechanism 11 includes two bag supporting components symmetrically arranged along the packaging bag conveying direction. The bag supporting component includes a connecting rod 111, a connecting piece 112, an upper bag supporting part 113 and a lower bag supporting part 114.

[0065] The connecting member 112 is a U-shaped member, including a vertical plate and an upper horizontal plate and a lower horizontal plate respectively connected to the upper and lower ends of one side of the vertical plate, and the lower horizontal plate is a horizontal plate.

[0066] The upper end of the connecting rod 111 is fixedly connected to the other side of the vertical plate of the connecting member 112, and the other end of the connecting rod 111 is used to connect the walking bag holding mechanism 14 of the bag pushing device 1; the lower end of the connecting rod 111 is used to connect the walking bag holding mechanism 14 of the bag pushing device 1. During the bag supporting process, the walking bag holding mechanism 14 can drive the upper bag supporting part 113 and the lower bag supporting part 114 of the two bag supporting assemblies to approach or move away from each other, thereby clamping or loosening the packaging bag. There is a first spacing between the upper bag supporting parts 113 of the two bag supporting assemblies, and a first spacing between the lower bag supporting parts 114 of the two bag supporting assemblies. Two spacings, the first spacing is larger than the second spacing, when the packaging bag opening is clamped, the bag clamping effect of the lower bag supporting part 114 is tighter, while the upper bag supporting part 113 and the bag opening are relatively loose, while satisfying the support of the packaging bag opening to prevent it from tipping over, and facilitating the bag support rod to be pulled out from the packaging bag opening, the connecting rod 111 is tilted, and the upper end spacing of the connecting rods 111 of the two bag supporting assemblies is smaller than the lower end spacing, so that in the process of holding the packaging bag by the walking bag holding mechanism 14, the packaging bag opening can be limited by the upper bag supporting part 113 and the lower bag supporting part 114.

[0067] The upper bag supporting part 113 includes a rubber tube 1131 and a connecting plate arranged side by side on the outside of the rubber tube 1131; the cross-sectional shape of the rubber tube 1131 is "D"-shaped, and its arc surface is used to support the bag. The upper connecting plate 1132 is an isosceles trapezoid, and the short bottom side of the upper connecting plate 1132 is connected to the upper cross plate (that is, the middle position of one side of the upper connecting plate 1132 is connected to the upper cross plate), which is convenient for feeding the packaging bag as a whole into the folding machine 4, and the short bottom length of the upper connecting plate 1132 is equal to the length of the upper cross plate, and the upper cross plate has an extension section toward the side close to the rubber tube 1131, and the extension section of the upper cross plate is connected to the lower side of the upper connecting plate 1132, and the two are connected by a number of bolts. The upper cross plate and the upper connecting plate 1132 can also be connected by welding, clamping and other methods in the existing technology, and the long bottom side of the upper connecting plate 1132 is connected to the long straight surface of the rubber tube 1131.

[0068] The lower bag supporting part 114 includes a flexible rubber strip 1141 and a lower connecting plate 1143; one side of the lower connecting plate 1143 is connected to the lower transverse plate, and the center line of the side of the lower transverse plate along the conveying direction of the packaging bag coincides with the center line of the length direction of the lower connecting plate 1143 (that is, the middle position of one side of the lower connecting plate 1143 is connected to the lower transverse plate), which is convenient for feeding the packaging bag as a whole into the folding machine 4, ensuring that the packaging bag does not deform during the docking process between the bag supporting rod and the folding machine 4. A number of mounting holes are provided on the other side, and the several mounting holes are evenly distributed along the length direction of the lower connecting plate 1143. The flexible rubber strip 1141 includes a rubber strip 1141 and a number of rubber strips 1141 arranged side by side on one side of the rubber strip 1141. A hollow elliptical ring 1142 is provided, and the long diameter of the hollow elliptical ring 1142 is arranged parallel to the long side of the rubber strip 1141. A fixing block is provided on the other side of the hollow elliptical ring 1142 opposite to the rubber strip 1141. The fixing block is installed in the mounting hole, and the fixing block is connected to the lower connecting plate 1143 by bolts. A supporting protrusion is provided on the rubber strip 1141, and the supporting protrusion is located between two adjacent hollow elliptical rings 1142. The distance from the end point of the supporting protrusion to the rubber strip 1141 is equal to the distance from the center of the hollow elliptical ring 1142 to the rubber strip 1141. The cross-section of the supporting protrusion along the conveying direction of the packaging bag is a triangle, a parallelogram or a trapezoid, and its bottom surface is connected to the rubber strip 1141.

[0069] like Figure 6 and Figure 7 As shown, in order to clamp the entire opening of the packaging bag during folding, the present invention lengthens the clamping part of the existing folding machine 4 so that the length of the clamping part of the folding machine 4 is not less than the length of the bag opening of the packaging bag.

[0070] like Figure 8As shown, the air flotation bag opening device 5 includes a fixed base 51, two rotating shafts 52, two swinging frames 53, a driving assembly 54 and two blowing assemblies 55; the two rotating shafts 52 are rotatably connected to the fixed base 51, and the axial directions of the two rotating shafts 52 are along the conveying direction of the packaging bag. The two rotating shafts 52 are symmetrically arranged about the center line of the fixed base 51 along the conveying direction of the packaging bag; the two swinging frames 53 are fixedly connected to the two rotating shafts 52 respectively; the driving assembly 54 is connected to the two rotating shafts 52, and the driving assembly 54 drives the two rotating shafts 52 to rotate toward or away from each other, thereby driving the lower ends of the two swinging frames 53 to move closer to or apart from each other; the two blowing assemblies 55 are respectively located at the two The two blowing assemblies 55 are provided with a second gap for the packaging bag to pass through, and a first gap is provided between the two swing frames 53, and the first gap is larger than the second gap; the two blowing assemblies 55 blow air into the second gap respectively, and when the packaging bag is conveyed into the range of the blowing assembly 55, air is blown into the second gap to adapt to the conveying speed of the packaging bag, so that the packaging bag mouth is straightened by gas, and there is no friction at the same time, thereby ensuring the shape maintenance effect of the packaging bag mouth before folding, thereby improving the folding effect.

[0071] The air blowing assembly 55 includes an air blowing plate 551, a first connecting plate 552 closely attached to the upper side of the air blowing plate 551, and a second connecting plate 553 closely attached to the lower side of the air blowing plate 551; wherein the first connecting plate 552 is made of PE material, and the second connecting plate 553 is made of aluminum material. The air blowing plates 551 of the two air blowing assemblies 55 are each provided with a plurality of air blowing holes 554 on one side close to each other, and the plurality of air blowing holes 554 are arranged along the length direction of the air blowing plate 551. The air blowing plate 551 is provided with an air guide groove 555 along its length direction, and the plurality of air blowing holes 554 are all connected to the air guide groove 555. The air guide groove 555 is provided with a connecting hole for connecting to an external air source; Figure 11 As shown, the opening direction of the plurality of blowing holes 554 is along the conveying direction of the packaging bag, and has an angle with the conveying direction, which is an acute angle, and the angle range is 10-20°. The blowing holes 554 are conical holes, and the length range of the blowing holes 554 is 80-100mm. The large end of the blowing hole 554 is connected to the air guide groove 555, and the aperture size of the small end of the blowing hole 554 is 0.5-3mm, preferably 2mm in this embodiment. If the aperture size of the small end of the blowing hole 554 is too small, it will lead to insufficient airflow pressure and cannot ensure the suspended state of the bag mouth; if the aperture size of the small end of the blowing hole 554 is too large, it will lead to excessive airflow pressure, which will affect the suspended state and make it difficult to maintain synchronous conveying with the folding machine 4.

[0072] like Figure 9As shown, the driving assembly 54 includes an air flotation bag cylinder 541, two synchronous gears 542 respectively fixedly connected to one end of the two rotating shafts 52, and two connecting frames 543; the two synchronous gears 542 are meshed with each other; one end of the two connecting frames 543 is respectively fixed to the two rotating shafts 52 in the radial direction, the other end of one connecting frame 543 is hinged to the fixed end of the air flotation bag cylinder 541, and the other end of the other connecting frame 543 is hinged to the movable end of the air flotation bag cylinder 541. When the air flotation bag cylinder 541 is in a retracted state, the two connecting frames 543 rotate through the synchronous gears 542, and the two blowing The spacing between the air components 55 is increased (the gap change is achieved by swinging, which is convenient for feeding the packaging bag), the packaging bag enters the blowing component 55, the air flotation bag cylinder 541 is extended, and the synchronous spacing between the two blowing components 55 is reduced, which is convenient for the packaging bag to be shaped by air flotation. It should be noted that the structure of the driving component 54 adopted in this embodiment is only a preferred solution. When implementing it, those skilled in the art may also adopt other driving structures in the prior art, which can satisfy the rotation of the rotating shaft 52 within a certain range, so that the range in which the two swing frames 53 are close to or separated from each other meets the transportation needs of the packaging bag.

[0073] like Figure 10 As shown, in order to further facilitate the packaging bags to enter between the two blowing components 55, notches are provided on the sides of the two blowing plates 551 that are close to each other and away from one end of the mounting seat, and the opening size of the notches gradually decreases along the conveying direction of the packaging bags.

[0074] like Figure 4 As shown, the lifting bag-holding rod bag clamp 3 includes a bag-holding assembly for clamping the packaging bag, at least two sets of servo electric cylinders 31, and at least two sets of bag-holding assemblies 32. The two sets of servo electric cylinders 31 are respectively arranged on either side of the unloading device 2. The servo electric cylinders 31 can perform effective servo control and can accurately control the initial downward extension distance of the bag-holding assembly 32. (Since the focus here is on the servo electric cylinder control, the specific structures of the bag-holding assembly and the bag-holding assembly are prior art and are detailed in Chinese Patent CN109850271A. The present invention herein directly applies the bag-holding assembly and the bag-holding assembly structure itself.) After the bag-holding assembly 32 contacts and positions the packaging bag opening, it extends downward again, and the packaging bag falls until it contacts the flat plate 13. During the bag-holding process, the distance of the second downward extension can be adjusted to accommodate packaging bags of different specifications and ensure consistent bag opening distance. In addition, the two servo motors 31 can effectively control the speed to ensure synchronous movement, preventing packaging problems caused by asynchronous descent of the two sides.

[0075] The bag-stretching assembly 3 is arranged on both sides of the unloading device and is used to perform bag-stretching operations on the packaging bags; the bag-stretching assembly includes a mounting plate, a bag-stretching cylinder, an outer connecting plate, a first connecting rod, a second connecting rod and a bag-stretching rod; the mounting plate is connected to the lifting assembly, and the lifting assembly drives the mounting plate to move up and down; the body of the bag-stretching cylinder is hinged on the mounting plate, and its telescopic rod is hinged to the bag-stretching rod; the first connecting rod and the second connecting rod are arranged in parallel, one end of each of which is hinged to the mounting plate and the other end of each of which is hinged to the bag-stretching rod; the outer connecting plate is arranged between the two mounting plates and is fixedly connected to the two mounting plates respectively;

[0076] The bag clamping assembly includes a first splint, a second splint, a third door panel, a fourth door panel, a first connecting plate, a second connecting plate, a first rotating shaft, a second rotating shaft, a first bag clamping cylinder and a second bag clamping cylinder; the first splint and the second splint are fixedly arranged on both sides of the bottom end of the blanking device, the third door panel and the fourth door panel are arranged in the blanking device, located between the first splint and the second splint, and the top ends of the third door panel and the fourth door panel are hinged to the blanking device respectively; the first connecting plate is arranged on one side of the third door panel and is fixedly connected to the third door panel, and the second connecting plate is arranged on one side of the fourth door panel and is fixedly connected to the fourth door panel; the first rotating shaft is connected to the first connecting plate, one end of which is connected to the cylinder body of the first bag clamping cylinder, and the other end is connected to the telescopic rod of the second bag clamping cylinder, the second rotating shaft is connected to the second connecting plate, one end of which is connected to the cylinder body of the second bag clamping cylinder, and the other end is connected to the telescopic rod of the first bag clamping cylinder.

[0077] A material packaging seam method comprises the following steps:

[0078] Step 0: bag the packaging bag so that the position of the packaging bag is consistent with the position of the lifting bag support rod bag clamp 3;

[0079] Step 1: The servo electric cylinder 31 extends downward for the first time, so that the bag support assembly 32 contacts the upper edge of the packaging bag to determine the position of the bag opening; add material into the packaging bag;

[0080] Step 2: The bag-opening cylinder extends to open the bag opening through the bag-opening assembly 32;

[0081] Step 3: The servo cylinder 31 extends downward for the second time until the bottom of the packaging bag contacts the flat plate 13 of the bag pushing device 1 and the height of the bag opening from the bag pushing flat plate is consistent;

[0082] Step 4: The walking bag holding mechanism 14 holds the bag, and at the same time, the bag supporting mechanism 11 clamps the entire opening of the packaging bag, and clamps the lower edge of the packaging bag opening and relaxes the upper edge;

[0083] Step 5: The servo electric cylinder 31 is raised to move the bag support assembly 32 upward out of the packaging bag;

[0084] Step 6: The walking bag holding mechanism 14 sends the packaging bag into the folding machine 4, and the folding machine 4 clamps the packaging bag opening;

[0085] At the same time, the air flotation bag opening device 5 is started to blow air toward the bag opening along the conveying direction of the bag, so that the bag is suspended along the conveying direction and adapts to the conveying speed of the folding machine 4;

[0086] Step 7: The folding machine 4 folds the edge of the packaging bag;

[0087] Step 8: The sewing device sews the folded packaging bag.

Claims

1. A material packaging seam device, characterized by: The invention comprises a bag pushing device (1), a feeding device (2) arranged above the bag pushing device (1), a lifting bag holding rod bag clamp (3) arranged on the feeding device (2), a folding machine (4) and a sewing device arranged in sequence along the conveying direction of the packaging bag on one side of the bag pushing device (1), and an air-floating bag opening device (5) installed on the folding machine (4); The bag pushing device (1) comprises a flat plate (13) located below a lifting bag holding rod bag clamp (3), a walking bag holding mechanism (14) for holding the bag and transferring the bag to a folding machine (4), and a bag supporting mechanism (11) arranged on the walking bag holding mechanism (14), wherein the bag supporting mechanism (11) comprises two bag supporting assemblies symmetrically arranged along the conveying direction of the bag; The lifting bag-holding rod bag clamp (3) comprises at least two groups of servo electric cylinders (31) and at least two groups of bag-holding assemblies (32), wherein the two groups of servo electric cylinders (31) are respectively arranged on both sides of the unloading device (2) and are used to drive the bag-holding assemblies (32) to move up and down; The length of the clamping part of the folding machine (4) is not less than the length of the bag opening of the packaging bag; the sewing device is used to sew the opening of the packaging bag after folding; The air-floating bag opening device (5) comprises a fixed seat (51) installed above the folding machine (4), two rotating shafts (52), two swinging frames (53), a driving component (54), and two blowing components (55); The two rotating shafts (52) are rotatably connected to the fixing seat (51); The two swing frames (53) are fixedly connected to the two rotating shafts (52) respectively; The two blowing components (55) are respectively located below the two swing frames (53) and are fixedly connected to the swing frames (53); A second gap for the packaging bag to pass through is provided between the two blowing components (55), and a first gap is provided between the two swing frames (53), and the first gap is larger than the second gap; The two blowing components (55) blow air toward the second gap respectively; The blowing assembly (55) includes a blowing plate (551); the blowing plates (551) of the two blowing assemblies (55) are each provided with a plurality of blowing holes (554) on one side close to each other, and the plurality of blowing holes (554) are arranged along the length direction of the blowing plate (551); The support bag assembly comprises a connecting rod (111), a connecting piece (112), an upper support bag portion (113) and a lower support bag portion (114); The connecting member (112) includes a vertical plate and an upper horizontal plate and a lower horizontal plate respectively connected to the upper and lower ends of one side of the vertical plate; the upper horizontal plate is connected to the middle portion of the upper support pocket portion (113) in the length direction, and the lower horizontal plate is connected to the middle portion of the lower support pocket portion (114) in the length direction; There is a first distance between the upper support bag parts (113) of the two support bag assemblies, and a second distance between the lower support bag parts (114) of the two support bag assemblies, and the first distance is greater than the second distance.

2. The material packaging seam device according to claim 1, characterized in that: The driving assembly (54) is connected to the two rotating shafts (52) and is used to drive the two rotating shafts (52) to rotate, thereby driving the two swing frames (53) to move closer or apart.

3. The material packaging seam device according to claim 2, characterized in that: The blowing assembly (55) further comprises a first connecting plate (552) closely attached to the upper side of the blowing plate (551) and a second connecting plate (553) closely attached to the lower side of the blowing plate (551); The air blowing plate (551) is provided with an air guiding groove (555) along its length direction, and the plurality of air blowing holes (554) are all connected to the air guiding groove (555); The air guide groove (555) is provided with a connection hole for connecting to an external air source.

4. The material packaging seam device according to claim 3, characterized in that: The driving assembly (54) includes an air flotation bag cylinder (541), two synchronous gears (542) and two connecting frames (543) respectively fixedly connected to one end of the two rotating shafts (52); The two synchronous gears (542) are meshed with each other; One end of the two connecting frames (543) is fixed on the two rotating shafts (52) respectively, the other end of one connecting frame (543) is hinged to the fixed end of the air flotation bag cylinder (541), and the other end of the other connecting frame (543) is hinged to the movable end of the air flotation bag cylinder (541).

5. The material packaging seam device according to claim 4, characterized in that: The other side of the vertical plate is fixedly connected to one end of a connecting rod (111), and the other end of the connecting rod (111) is used to connect to a walking bag holding mechanism (14) of the bag pushing device (1).

6. The material packaging seam device according to claim 5, characterized in that: The lower support pocket portion (114) comprises a flexible rubber strip and a lower connecting plate (1143); The middle portion of the lower connecting plate (1143) is connected to the lower transverse plate, and a plurality of mounting holes are provided on the inner side of the lower connecting plate (1143); The flexible rubber strip comprises a rubber strip (1141) and a plurality of hollow elliptical rings (1142) arranged side by side on the outside of the rubber strip (1141); the inner side of the rubber strip (1141) is used to contact the packaging bag when supporting the bag; a fixing block is provided on the other side of the hollow elliptical ring (1142) opposite to the rubber strip (1141), and the fixing block is installed in the installation hole.

7. The material packaging seam device according to claim 6, characterized in that: The upper bag-supporting portion (113) comprises a rubber tube (1131) and an upper connecting plate (1132) arranged outside the rubber tube (1131); the inner side of the rubber tube (1131) is arranged as a curved surface for contacting the packaging bag when supporting the bag; The middle portion of the upper connecting plate (1132) is connected to the upper transverse plate.

8. A material packaging seaming method, based on a material packaging seaming device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: The servo electric cylinder (31) extends downward for the first time, so that the bag support assembly (32) contacts the upper edge of the packaging bag to determine the position of the bag opening; Add materials to the packaging bag; Step 2: Open the packaging bag opening by using the bag opening assembly (32); Step 3: The servo electric cylinder (31) extends downward for the second time until the bottom of the packaging bag contacts the flat plate (13) of the package pushing device (1) and the height of the packaging bag opening from the flat plate (13) is consistent; Step 4: The walking bag holding mechanism (14) holds the bag, and at the same time, the bag supporting mechanism (11) clamps the entire opening of the packaging bag, and clamps the lower edge of the packaging bag opening tightly while relaxing the upper edge; Step 5: The servo electric cylinder (31) rises to move the bag support assembly (32) upward out of the packaging bag; Step 6: The walking bag holding mechanism (14) sends the packaging bag into the folding machine (4), and the folding machine (4) clamps the packaging bag opening; At the same time, the air flotation bag opening device (5) is started to blow air toward the bag opening along the conveying direction of the bag, so that the bag is suspended along the conveying direction and adapts to the conveying speed of the folding machine (4); Step 7: The folding machine (4) folds the edge of the packaging bag; Step 8: The sewing device sews the folded packaging bag.

9. A material packaging seam method according to claim 8, characterized in that: Before step 1, the packaging bag is sent to the discharge port of the unloading device (2) for bagging, and the position of the packaging bag is made consistent with the position of the lifting bag support rod bag clamp (3).

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