Bag clamping mechanism and bag sealing device

Abstract

The utility model discloses a bag clamping mechanism and a sealing device, and belongs to the field of packaging equipment, the bag clamping mechanism comprises a rack, a clamping strip, a driving lever, a bag clamping lifting mechanism, a clamping strip driving mechanism and a driving lever driving mechanism; the clamping strips extend transversely and are arranged in parallel in the longitudinal direction. The driving levers extend vertically and are arranged in parallel in the transverse direction; the bag clamping lifting mechanism is arranged on the rack, connected with the clamping strip and the driving lever and used for driving the clamping strip and the driving lever to move up and down; the clamping strip driving mechanism is arranged on the rack, connected with the clamping strips and used for driving the two clamping strips to be close to or away from each other in the longitudinal direction; and the deflector rod driving mechanism is arranged on the rack, connected with the deflector rods and used for driving the two deflector rods to get close to or get away from each other in the transverse direction. According to the bag clamping mechanism and the sealing device, the bag opening is clamped in the longitudinal direction and the transverse direction through the clamping strips and the shifting rods respectively, the bag opening can be closed up according to the preset folding marks, and the closing-up quality of a packaging bag and the follow-up packaging quality can be improved.

Description

Technical Field

[0001] The utility model relates to the field of packaging equipment, in particular to a bag clamping mechanism and a bag sealing device. Background Art

[0002] Automation technology is an indispensable part of modern assembly line operations. With the rapid development of industry, the requirements for packaging efficiency and packaging quality are increasing. Traditional manual or semi-automatic packaging methods can no longer meet the needs of large-scale and high-efficiency production. Automated packaging lines can significantly reduce manual operations, improve production efficiency, reduce production costs, and reduce errors caused by human factors.

[0003] The bag folding mechanism and the bag sealing mechanism are important components of the automated packaging line, which are used to bend and seal the bag mouths of the packaging bags respectively. They have been widely used in various food packaging fields, such as biscuits, candies, bread, puffed foods, etc. It can greatly improve the packaging speed and packaging quality, and reduce production costs and labor costs.

[0004] The bag clamping mechanism is arranged at the front end of the bag folding mechanism, and is used to clamp the bag opening of the packaging bag to facilitate the subsequent bending and sealing operations of the bag opening. In the related art, the packaging bag is provided with horizontally extending folds on two opposite sides and vertically extending folds on the other two opposite sides. The bag clamping mechanism usually clamps the bag opening by means of components such as clamping claws, but there is a problem that the bag opening cannot be closed according to the preset folds and the closing quality is poor, which in turn affects the subsequent packaging quality.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] The utility model provides a bag clamping mechanism and a bag sealing device, which at least solve the technical problem of how to improve the closing and packaging quality of the packaging bag.

[0008] (II) Technical solution

[0009] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0010] A bag clamping mechanism is used to clamp the bag opening of a packaging bag, wherein the bag opening is provided with folds on both sides in the transverse direction, and the bag clamping mechanism comprises:

[0011] frame;

[0012] Two clamping strips movably arranged on the frame, the clamping strips extending transversely and arranged in parallel in the longitudinal direction;

[0013] Two levers movably disposed between the clamping strips, the levers extending vertically and arranged in parallel in the transverse direction;

[0014] A bag clamping and lifting mechanism is arranged on the frame and connected with the clamping bar and the shifting rod, and is used to drive the clamping bar and the shifting rod to move up and down;

[0015] A clamping strip driving mechanism, disposed on the frame and connected to the clamping strips, for driving the two clamping strips to move closer to or farther from each other in the longitudinal direction;

[0016] The lever driving mechanism is arranged on the frame and connected with the levers, and is used for driving the two levers to move closer to or farther from each other in a lateral direction.

[0017] In some embodiments, the bag clamping and lifting mechanism includes a bag clamping and lifting frame, a bag clamping and lifting rack, a bag clamping and lifting gear, and a bag clamping and lifting motor; the bag clamping and lifting frame is slidably connected to the frame and can be lifted and lowered relative to the frame; the bag clamping and lifting rack is fixedly connected to the frame and vertically arranged; the bag clamping and lifting motor is fixedly connected to the frame and is transmission-connected to the bag clamping and lifting rack through the bag clamping and lifting gear, and is used to drive the bag clamping and lifting frame to lift and lower; wherein the clamping bar driving mechanism and the lever driving mechanism are arranged on the bag clamping and lifting frame.

[0018] In some embodiments, the clamping bar driving mechanism includes two clamping arms, two clamping bar driving racks, a clamping bar driving motor and a clamping bar driving gear; the clamping arm is slidably connected to the bag clamping lifting frame and can move longitudinally relative to the frame; the two clamping bar driving racks are respectively fixedly connected to the two clamping arms, and are parallel to each other and spaced apart, and the clamping bar driving racks are longitudinally arranged; the clamping bar driving motor is fixedly connected to the bag clamping lifting frame, and is transmission-connected to the two clamping bar driving racks through the clamping bar driving gear, so as to drive the two clamping arms to move synchronously and in opposite directions; wherein, the two clamping bars are respectively connected to the two clamping arms.

[0019] In some embodiments, the lever driving mechanism includes two groups of lever driving components respectively arranged on both sides of the bag clamping lifting frame in the lateral direction, each group of the lever driving components includes: a lever driving rack, a lever driving sleeve, a lever driving motor and a lever driving gear; the lever driving rack is fixedly connected to the bag clamping lifting frame and is laterally arranged; the lever driving sleeve is slidably sleeved with the lever driving rack and can move laterally relative to the lever driving rack; the lever driving motor is fixedly connected to the lever driving sleeve and is transmission-connected to the lever driving rack through the lever driving gear, so as to drive the lever driving sleeve to move laterally; wherein, the two levers are respectively fixedly connected to the two lever driving sleeves.

[0020] The utility model also provides a bag sealing device, comprising the bag clamping mechanism mentioned above.

[0021] In some embodiments, the bag sealing device includes a bag folding mechanism, which includes: a bag folding claw, a bag folding lifting mechanism and a bag folding moving mechanism; the bag folding claw is movably arranged on the frame and is used to grasp the bag opening; the bag folding moving mechanism and the bag folding lifting mechanism are arranged on the frame and connected to the bag folding claw, and are respectively used to drive the bag folding claw to move longitudinally and lift and lower, so that the bag folding claw folds the bag opening.

[0022] In some embodiments, the bag folding moving mechanism includes a bag folding lifting seat, a bag folding moving rack, a bag folding moving sleeve, a bag folding moving motor and a bag folding moving gear; the bag folding lifting seat is connected to the bag clamping lifting mechanism and is driven by the bag clamping lifting mechanism to move up and down; the bag folding moving rack is fixedly connected to the bag folding lifting seat and is longitudinally arranged; the bag folding moving sleeve is slidably connected to the bag folding lifting seat or the bag folding moving rack and can move longitudinally relative to the bag folding moving rack; the bag folding moving motor is fixed on the bag folding moving sleeve and is transmission-connected to the bag folding moving rack through the bag folding moving gear, so as to drive the bag folding moving sleeve to move longitudinally; wherein, the bag folding lifting mechanism is arranged on the bag folding moving sleeve and is directly connected to the bag folding clamp.

[0023] In some embodiments, the bag folding lifting mechanism includes a bag folding lifting slide rail, a bag folding lifting rack, a bag folding lifting motor, a bag folding lifting gear and a bag folding lifting frame; the bag folding lifting slide rail is fixedly connected to the bag folding moving slide sleeve and is vertically arranged; the bag folding lifting rack is slidably connected to the bag folding lifting slide rail and can be lifted and moved relative to the bag folding lifting slide rail; the bag folding lifting motor is fixedly connected to the bag folding lifting slide rail and is transmission-connected to the bag folding lifting rack through the bag folding lifting gear; the bag folding lifting frame is fixedly connected to the bag folding lifting rack and is connected to the bag folding clamp.

[0024] In some embodiments, the bag sealing device also includes a sealing mechanism, which includes a sealing lifting mechanism, a sealing moving mechanism and a labeling device; the labeling device is used to label the bag opening; the sealing moving mechanism and the sealing lifting mechanism are arranged on the bag folding lifting frame and are connected to the labeling device, and are respectively used to drive the lifting mechanism and longitudinal movement of the labeling device, so that the labeling device can move to the preset labeling position of the bag opening.

[0025] In some embodiments, the sealing moving mechanism includes: a sealing moving rack longitudinally fixed on the bag folding lifting frame, a sealing moving sleeve slidably connected to the sealing moving rack, a sealing moving motor fixedly connected to the sealing moving sleeve, and a sealing moving gear connected to the output shaft of the sealing moving motor and the sealing moving rack; the sealing lifting mechanism includes: a sealing lifting rack fixedly connected to the sealing moving sleeve, a sealing lifting frame slidably connected to the sealing lifting rack in the vertical direction, a sealing lifting motor fixedly connected to the sealing lifting frame, and a sealing lifting gear connected to the output shaft of the sealing lifting motor and the sealing lifting rack; wherein, the labeling device is arranged on the sealing lifting frame, and is provided with a discharge barrel for outputting stickers, and a waste barrel for recycling stickers.

[0026] (III) Beneficial effects

[0027] Compared with the prior art, the bag clamping mechanism and bag sealing device provided by the utility model have the following beneficial effects:

[0028] When the bag clamping mechanism and bag sealing device are working, the packaging bag is first transported to the position between the clamping strips and the lever, and then the clamping strip and the lever are driven down to match the height of the bag opening through the bag clamping lifting mechanism, and then the two clamping strips are driven to approach each other in the longitudinal direction through the clamping strip driving mechanism to tighten the bag opening in the longitudinal direction, and then the two clamping strips are driven to approach each other in the longitudinal direction through the clamping strip driving mechanism to fold the two sides of the bag opening in the transverse direction into the inner side of the bag opening along the crease, and the clamping strip and the lever continue to move until the bag opening is clamped. Compared with the traditional method of gripping the bag opening in one direction with the clamping claw, the bag clamping mechanism of the utility model clamps the bag opening in the longitudinal and transverse directions respectively through the clamping strip and the lever, and can make the bag opening close according to the preset crease, which is conducive to improving the closing quality of the packaging bag and the subsequent packaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 2 is a three-dimensional diagram of a bag sealing device in an embodiment.

[0030] Figure 2 It is a three-dimensional diagram of the internal structure of the bag sealing device in the embodiment.

[0031] Figure 3 It is a side view of the internal structure of the bag sealing device in the embodiment.

[0032] Figure 4 Schematic diagram of the bag clamping mechanism in the bag clamping process in the embodiment.

[0033] Figure 5 It is a schematic diagram of the bag clamping mechanism after completing bag clamping in the embodiment.

[0034] Figure 6 It is a three-dimensional diagram of the bag folding mechanism and the sealing mechanism in the embodiment.

[0035] Reference numerals:

[0036] Bag clamping mechanism 1, frame 11, clamping strip 12, lever 13, bag clamping lifting mechanism 14, clamping strip driving mechanism 15, lever driving mechanism 16, bag clamping lifting frame 141, bag clamping lifting rack 142, bag clamping lifting gear 143, bag clamping lifting motor 144, clamping arm 151, clamping strip driving rack 152, clamping strip driving motor 153, clamping strip driving gear 154, lever driving rack 161, lever driving sliding sleeve 162, lever driving motor 163 and lever driving gear 164;

[0037] Bag folding mechanism 2, bag folding clamping claw 21, bag folding lifting mechanism 22, bag folding moving mechanism 23, bag folding lifting slide rail 221, bag folding lifting rack 222, bag folding lifting motor 223, bag folding lifting gear 224, bag folding lifting frame 225, bag folding lifting seat 231, bag folding moving rack 232, bag folding moving sliding sleeve 233, bag folding moving motor 234, bag folding moving gear 235;

[0038] Sealing mechanism 3, sealing lifting mechanism 31, sealing moving mechanism 32, labeling device 33, sealing lifting rack 311, bag folding lifting frame 312, sealing lifting motor 313, sealing lifting gear 314, sealing moving rack 321, sealing moving sliding sleeve 322, sealing moving motor 323, sealing moving gear 324, discharging barrel 331, waste barrel 332;

[0039] Conveying mechanism 4, machine cover 5. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0041] The bag clamping mechanism of the existing packaging equipment usually clamps the bag mouth by means of components such as clamping claws, but there is a problem that the bag mouth cannot be closed according to the preset crease and the closing quality is poor, which in turn affects the subsequent packaging quality.

[0042] In order to solve the above technical problems, this embodiment provides a bag clamping mechanism, please refer to Figures 1 to 5 As shown, Figure 1 is a three-dimensional diagram of the bag sealing device in the embodiment, Figure 2 is a three-dimensional diagram of the internal structure of the bag sealing device in the embodiment, Figure 3 is a side view of the internal structure of the bag sealing device in the embodiment, Figure 4 is a schematic diagram of the bag clamping mechanism in the bag clamping process in the embodiment, Figure 5 It is a schematic diagram of the bag clamping mechanism after completing bag clamping in the embodiment.

[0043] A bag clamping mechanism 1 of this embodiment, such as Figure 1 As shown, the bag opening is used to clamp the packaging bag, and the bag opening is provided with folds on both sides in the transverse direction. The bag clamping mechanism 1 includes: a frame 11, two clamping strips 12 movably arranged on the frame 11, two levers 13 movably arranged between the clamping strips 12, a bag clamping lifting mechanism 14, a clamping strip driving mechanism 15 and a lever driving mechanism 16.

[0044] like Figure 1 As shown, the clamping strips 12 extend transversely and are arranged in parallel in the longitudinal direction; the levers 13 extend vertically and are arranged in parallel in the transverse direction.

[0045] The bag clamping and lifting mechanism 14 is arranged on the frame 11 and connected with the clamping bar 12 and the lever 13, and is used to drive the clamping bar 12 and the lever 13 to move up and down so that the clamping bar 12 and the lever 13 can move to a preset working height.

[0046] The clamping strip driving mechanism 15 is disposed on the frame 11 and connected to the clamping strips 12 for driving the two clamping strips 12 to move closer to or farther from each other in the longitudinal direction, so that the bag opening between the clamping strips 12 is closed in the longitudinal direction when the two clamping strips 12 move closer to each other.

[0047] The lever driving mechanism 16 is disposed on the frame 11 and connected to the levers 13 for driving the two levers 13 to move closer to or farther from each other in the transverse direction, so that when the two levers 13 move closer to each other, the bag opening between the levers 13 is closed in the transverse direction according to a preset fold.

[0048] When the bag clamping mechanism 1 of the above technical solution is working, the packaging bag is first transported to the position between the clamping strips 12 and the lever 13, and then the bag clamping lifting mechanism 14 drives the clamping strips 12 and the lever 13 to be lowered to a height that matches the bag opening of the packaging bag, and then the clamping strip driving mechanism 15 drives the two clamping strips 12 to approach each other in the longitudinal direction to tighten the bag opening in the longitudinal direction, and then the clamping strip driving mechanism 15 drives the two clamping strips 12 to approach each other in the longitudinal direction to fold the bag opening in the transverse direction along the creases into the inner side of the bag opening, as shown in FIG. Figure 4 As shown, the clamping strip 12 and the lever 13 continue to move until the bag opening is clamped. Figure 5 Compared with the conventional method of clamping the bag opening in one direction, the bag clamping mechanism 1 of the utility model clamps the bag opening in the longitudinal and transverse directions respectively through the clamping strip 12 and the lever 13, and can close the bag opening according to the preset fold, which is beneficial to improving the closing quality of the packaging bag and the subsequent packaging quality.

[0049] Exemplarily, the clamping strip 12 and the lever 13 are made of rigid material.

[0050] In one embodiment of the above-mentioned bag clamping and lifting mechanism 14 driving the clamping strip 12 and the lever 13 to move up and down, refer to Figure 2As shown, the bag clamping and lifting mechanism 14 includes a bag clamping and lifting frame 141, a bag clamping and lifting rack 142, a bag clamping and lifting gear 143 and a bag clamping and lifting motor 144; the bag clamping and lifting frame 141 is slidably connected to the frame 11 and can be lifted and lowered relative to the frame 11; the bag clamping and lifting rack 142 is fixedly connected to the frame 11 and is vertically arranged; the bag clamping and lifting motor 144 is fixedly connected to the frame 11 and is transmission-connected to the bag clamping and lifting rack 142 through the bag clamping and lifting gear 143, and is used to drive the bag clamping and lifting frame 141 to lift and lower; wherein, the clamping strip driving mechanism 15 and the lever driving mechanism 16 are arranged on the bag clamping and lifting frame 141. When working, the bag clamping and lifting motor 144 is supported by the frame 11, and drives the bag clamping and lifting rack 142 to lift and lower through the bag clamping and lifting gear 143, thereby driving the bag clamping and lifting frame 141 and the clamping strip driving mechanism 15, the lever driving mechanism 16, the clamping strip 12 and the lever 13 arranged on the lifting frame to lift and lower.

[0051] Exemplarily, the bag clamping lifting frame 141 is connected to the frame 11 via a vertically arranged slide rail structure, or a slideway is provided on the frame 11, and the bag clamping lifting rack 142 is slidably arranged on the inner side of the slideway, so that the bag clamping lifting frame 141 can be lifted and lowered relative to the frame 11.

[0052] In another embodiment in which the bag clamping lifting mechanism 14 drives the clamping bar 12 and the lever 13 to move up and down, the bag clamping lifting mechanism 14 can also be an existing lifting module (not shown) installed on the frame 11, such as a screw moving module, and the lifting module drives the clamping bar 12 and the lever 13 to move up and down through the driving end.

[0053] In one embodiment of the above-mentioned clamping strip driving mechanism 15 driving the two clamping strips 12 to move closer to or farther from each other in the longitudinal direction, refer to Figure 2 As shown, the clamping strip driving mechanism 15 includes two clamping arms 151, two clamping strip driving racks 152, a clamping strip driving motor 153 and a clamping strip driving gear 154; the clamping arm 151 is slidably connected to the bag clamping lifting frame 141 and can move longitudinally relative to the frame 11; the two clamping strip driving racks 152 are respectively fixedly connected to the two clamping arms 151, and are arranged parallel to each other and spaced apart, and the clamping strip driving racks 152 are arranged longitudinally; the clamping strip driving motor 153 is fixedly connected to the bag clamping lifting frame 141, and is transmission-connected to the two clamping strip driving racks 152 through the clamping strip driving gear 154, and is used to drive the two clamping arms 151 to move synchronously and reversely; wherein, the two clamping strips 12 are respectively connected to the two clamping arms 151. When working, the clamping strip driving motor 153 is supported by the bag clamping lifting frame 141, and drives the two clamping strip driving racks 152 to move synchronously and reversely through the clamping strip driving gear 154, thereby making the clamping strips 12 approach or move away from each other.

[0054] Exemplarily, the bag clamping lifting frame 141 is provided with two longitudinally extending slide grooves, and the clamping arm 151 is slidably connected to the inner side of the slide grooves through the clamping bar driving rack 152 and can slide along the slide grooves.

[0055] Exemplarily, the clamp arm 151 and the clamp driving rack 152 are welded or connected by bolts.

[0056] In one embodiment of the lever driving mechanism 16 driving the two levers 13 to move closer to or farther from each other in the lateral direction, see Figure 3 and Figure 4 As shown, the lever driving mechanism 16 includes two groups of lever driving components respectively arranged on both sides of the bag clamping lifting frame 141 in the lateral direction, each group of lever driving components includes: a lever driving rack 161, a lever driving sleeve 162, a lever driving motor 163 and a lever driving gear 164; the lever driving rack 161 is fixedly connected to the bag clamping lifting frame 141 by welding, bolting, etc., and is arranged horizontally; the lever driving sleeve 162 is slidably sleeved with the lever driving rack 161, and can move horizontally relative to the lever driving rack 161; the lever driving motor 163 is fixedly connected to the lever driving sleeve 162, and is transmission-connected to the lever driving rack 161 through the lever driving gear 164, and is used to drive the lever driving sleeve 162 to move horizontally; wherein, the two levers 13 are fixedly connected to the two lever driving sleeves 162 respectively. During operation, the lever driving motor 163 drives the lever driving gear 164 to rotate on the lever driving rack 161, thereby driving the lever driving sleeve 162 and the lever 13 to move laterally, so that the levers 13 move closer to or farther from each other.

[0057] It can be understood that the driving order of the above-mentioned bag clamping and lifting mechanism 14, the clamping bar driving mechanism 15 and the shifting rod driving mechanism 16 can be interchanged (not shown in the figure). For example, the clamping bar driving mechanism 15 is installed on the frame 11, the bag clamping and lifting mechanism 14 is connected to the driving end of the clamping bar driving mechanism 15, and the clamping bar 12 is then connected to the driving end of the bag clamping and lifting mechanism 14, that is, the connection order of the bag clamping and lifting mechanism 14 and the clamping bar driving mechanism 15 with the clamping bar 12, and the connection order of the bag clamping and lifting mechanism 14 and the shifting rod driving mechanism 16 with the shifting rod 13 can be adjusted as needed.

[0058] This embodiment provides a bag sealing device, see Figure 1 As shown, it includes the above-mentioned bag clamping mechanism 1, and the function of clamping the bag opening of the packaging bag is achieved through the bag clamping mechanism 1.

[0059] In order to fold the bag mouth 180 degrees after clamping the bag mouth to achieve a better sealing effect, refer to Figure 1 and Figure 6 As shown, Figure 61 is a three-dimensional diagram of the bag folding mechanism and the sealing mechanism in the embodiment. The bag sealing device includes a bag folding mechanism 2, which includes: a bag folding clamp 21, a bag folding lifting mechanism 22 and a bag folding moving mechanism 23; the bag folding moving mechanism 23 and the bag folding lifting mechanism 22 are arranged on the frame 11 and connected to the bag folding clamp 21, and are respectively used to drive the bag folding clamp 21 to move longitudinally and lift and lower, so that the bag folding clamp 21 folds the bag mouth. When working, the bag folding clamp 21 grabs the preset folding position of the bag mouth, and realizes a 90-degree bend of the bag mouth through longitudinal movement, and then realizes a 180-degree folding of the bag mouth through downward movement.

[0060] Exemplarily, the bag folding gripper 21 uses an existing pneumatic or electric gripper.

[0061] In one embodiment of the above-mentioned bag folding moving mechanism 23 driving the bag folding clamping claw 21 to move longitudinally, refer to Figure 2 and Figure 6 As shown, the bag folding moving mechanism 23 includes a bag folding lifting seat 231, a bag folding moving rack 232, a bag folding moving sleeve 233, a bag folding moving motor 234 and a bag folding moving gear 235; the bag folding lifting seat 231 is connected to the bag clamping lifting mechanism 14, such as being fixedly connected to the above-mentioned bag clamping lifting frame 141, and is driven by the bag clamping lifting mechanism 14 to move up and down; the bag folding moving rack 232 is fixedly connected to the bag folding lifting seat 231 and is longitudinally arranged; the bag folding moving sleeve 233 is slidably connected to the bag folding lifting seat 231 or the bag folding moving rack 232, and can move longitudinally relative to the bag folding moving rack 232; the bag folding moving motor 234 is fixed on the bag folding moving sleeve 233, and is transmission-connected to the bag folding moving rack 232 through the bag folding moving gear 235, and is used to drive the bag folding moving sleeve 233 to move longitudinally; wherein, the bag folding lifting mechanism 22 is arranged on the bag folding moving sleeve 233, and is directly connected to the bag folding clamp 21. During operation, the bag folding moving motor 234 drives the bag folding moving gear 235 to rotate on the bag folding moving rack 232, so that the bag folding moving sliding sleeve 233 can move longitudinally, thereby driving the bag folding lifting mechanism 22 and the bag folding clamping claw 21 to move longitudinally.

[0062] For example, see Figure 2 and Figure 6 As shown, two groups of the folding bag moving rack 232, the folding bag moving sleeve 233, the folding bag moving motor 234 and the folding bag moving gear 235 are provided on the folding bag lifting seat 231 and are symmetrically arranged on both sides in the transverse direction, so as to improve the stability of the longitudinal movement of the folding bag clamp 21.

[0063] In another embodiment in which the bag folding moving mechanism 23 drives the bag folding clamp 21 to move longitudinally, the bag folding moving mechanism 23 is an existing moving module (not shown) installed on the driving end of the bag clamping lifting mechanism 14, and the moving end of the moving module is connected to the bag folding lifting mechanism 22.

[0064] In one embodiment of the above-mentioned bag folding lifting mechanism 22 driving the bag folding clamp 21 to move up and down, refer to Figure 2 and Figure 6 As shown, the bag folding lifting mechanism 22 includes a bag folding lifting slide rail 221, a bag folding lifting rack 222, a bag folding lifting motor 223, a bag folding lifting gear 224 and a bag folding lifting frame 225; the bag folding lifting slide rail 221 is fixedly connected to the bag folding moving slide sleeve 233 and is vertically arranged; the bag folding lifting rack 222 is slidably connected to the bag folding lifting slide rail 221 and can be lifted and moved relative to the bag folding lifting slide rail 221; the bag folding lifting motor 223 is fixedly connected to the bag folding lifting slide rail 221, and is transmission-connected to the bag folding lifting rack 222 through the bag folding lifting gear 224; the bag folding lifting frame 225 is fixedly connected to the bag folding lifting rack 222 and is connected to the bag folding clamp 21. During operation, the bag folding lifting motor 223 is supported by the bag folding lifting slide rail 221 to drive the bag folding lifting gear 224 to rotate, thereby driving the bag folding lifting rack 222 to move up and down, and the bag folding lifting frame 225 and the bag folding clamp 21 are lifted and lowered synchronously with the bag folding lifting rack 222.

[0065] Exemplarily, the bag folding lifting slide rail 221 is welded or bolted to the bottom of the bag folding moving slide sleeve 233 .

[0066] Exemplarily, the bag folding lifting mechanism 22 is provided with two groups, which are respectively connected to the two bag folding moving sleeves 233 .

[0067] To label and fix the folded part after the bag mouth is folded, refer to Figure 1 and Figure 6 As shown, the bag sealing device also includes a sealing mechanism 3, which includes a sealing lifting mechanism 31, a sealing moving mechanism 32 and a labeling device 33; the labeling device 33 is used to label the bag opening; the sealing moving mechanism 32 and the sealing lifting mechanism 31 are arranged on the bag folding lifting frame 225 and are connected to the labeling device 33, and are respectively used to drive the lifting mechanism and longitudinal movement of the labeling device 33, so that the labeling device 33 can move to the preset labeling position of the bag opening.

[0068] Exemplarily, the above-mentioned labeling device 33 is an existing labeling device 33, and its labeling working principle is not repeated here.

[0069] In one embodiment of the sealing moving mechanism 32 driving the labeling device 33 to move longitudinally, see Figure 2 and Figure 6As shown, the sealing movement mechanism 32 includes: a sealing movement rack 321, a sealing movement sleeve 322, a sealing movement motor 323 and a sealing movement gear 324. The sealing movement rack 321 is longitudinally arranged and fixed on the bag folding lifting frame 225. The sealing movement sleeve 322 is slidably sleeved with the sealing movement rack 321 and can move along the length direction of the sealing movement rack 321. The sealing movement motor 323 is fixedly connected with the sealing movement sleeve 322. The center of the sealing movement gear 324 is connected to the output shaft of the sealing movement motor 323, and its tooth surface is connected to the sealing movement rack 321. When working, the sealing movement motor 323 drives the sealing movement gear 324 to rotate on the sealing movement rack 321, thereby driving the sealing movement sleeve 322 to move longitudinally.

[0070] Exemplarily, the sealing moving mechanism 32 is provided with two groups, which are respectively connected to the two groups of bag folding and lifting mechanisms 22, so as to improve the stability of the longitudinal movement of the labeling device 33.

[0071] In one embodiment of the sealing lifting mechanism 31 driving the labeling device 33 to move upward and downward, refer to Figure 2 and Figure 6 As shown, the sealing lifting mechanism 31 includes: a sealing lifting rack 311, a bag folding lifting frame 312, a sealing lifting motor 313 and a sealing lifting gear 314; the sealing lifting rack 311 is fixedly connected to the sealing moving sliding sleeve 322, the bag folding lifting frame 312 is slidably connected to the sealing lifting rack 311 in the vertical direction, such as through a slide rail or a slideway, the sealing lifting motor 313 is fixedly connected to the bag folding lifting frame 312, and its output shaft is connected to the sealing lifting gear 314, and the sealing lifting gear 314 is connected to the sealing lifting rack 311; wherein, the labeling device 33 is arranged on the bag folding lifting frame 312. When working, the sealing lifting motor 313 drives the sealing lifting gear 314 to rotate on the sealing lifting rack 311, thereby driving the bag folding lifting frame 312 and the labeling device 33 to rise and fall.

[0072] See also Figure 3 As shown, the labeling device 33 is provided with a discharge cylinder 331 for outputting stickers, and a waste cylinder 332 for recycling stickers. The discharge cylinder 331 and the waste cylinder 332 are installed on the bag folding lifting frame 312.

[0073] For example, see Figure 2 and Figure 6 As shown, the sealing lifting mechanism 31 is provided with two groups, which are respectively connected to the two groups of sealing moving mechanisms 32, so as to improve the stability of the lifting and lowering movement of the labeling device 33.

[0074] The sealing mechanism 3 drives the labeling device through the sealing lifting mechanism 31, the sealing moving mechanism 32, the bag folding lifting mechanism 22, the bag folding moving mechanism 23 and the bag clamping lifting mechanism 14, thereby realizing multi-degree-of-freedom adjustment of the labeling device. In conjunction with conventional motor control, three-level height, three-level longitudinal and one-level lateral displacement control can be realized, thereby realizing fast and efficient sealing of paper bags of different specifications.

[0075] To achieve automatic conveying of packaging bags, refer to Figure 1 As shown, the bag sealing device further comprises a conveying mechanism 4. Exemplarily, the conveying mechanism 4 is a conveyor belt.

[0076] See also Figure 1 As shown, the bag sealing device can also be provided with a cover 5 outside the frame 11 to protect the internal mechanism and prevent the operator from accidentally touching it.

[0077] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bag clamping mechanism, used for clamping the bag opening of a packaging bag, wherein the bag opening is provided with folds on both sides in the transverse direction, and the bag clamping mechanism comprises: frame; Two clamping strips movably arranged on the frame, the clamping strips extending transversely and arranged in parallel in the longitudinal direction; Two levers movably disposed between the clamping strips, the levers extending vertically and arranged in parallel in the transverse direction; A bag clamping and lifting mechanism is arranged on the frame and connected with the clamping bar and the shifting rod, and is used to drive the clamping bar and the shifting rod to move up and down; A clamping strip driving mechanism, disposed on the frame and connected to the clamping strips, for driving the two clamping strips to move closer to or farther from each other in the longitudinal direction; The lever driving mechanism is arranged on the frame and connected with the levers, and is used for driving the two levers to move closer to or farther from each other in a lateral direction.

2. The bag clamping mechanism according to claim 1, characterized in that: The bag clamping and lifting mechanism comprises a bag clamping and lifting frame, a bag clamping and lifting rack, a bag clamping and lifting gear and a bag clamping and lifting motor; The bag clamping lifting frame is slidably connected to the frame and can be lifted and lowered relative to the frame; The bag clamping lifting rack is fixedly connected to the frame and is arranged vertically; The bag clamping lifting motor is fixedly connected to the frame, and is transmission-connected to the bag clamping lifting rack through the bag clamping lifting gear, so as to drive the bag clamping lifting frame to move upward and downward; Wherein, the clamping strip driving mechanism and the shifting rod driving mechanism are arranged on the bag clamping lifting frame.

3. The bag clamping mechanism according to claim 2, characterized in that: The clamping strip driving mechanism comprises two clamping arms, two clamping strip driving racks, a clamping strip driving motor and a clamping strip driving gear; The clamping arm is slidably connected to the bag clamping lifting frame and can move longitudinally relative to the frame; The two clamping bar driving racks are respectively fixedly connected to the two clamping arms, and are arranged parallel to each other and at intervals, and the clamping bar driving racks are arranged longitudinally; The clamping strip driving motor is fixedly connected to the bag clamping lifting frame, and is connected to the two clamping strip driving racks through the clamping strip driving gear, so as to drive the two clamping arms to move synchronously and in opposite directions; Wherein, the two clamping strips are respectively connected to the two clamping arms.

4. The bag clamping mechanism according to claim 2, characterized in that: The lever driving mechanism comprises two sets of lever driving components respectively arranged on both sides of the bag clamping lifting frame in the transverse direction, and each set of the lever driving components comprises: a lever driving rack, a lever driving sleeve, a lever driving motor and a lever driving gear; The lever driving rack is fixedly connected to the bag clamping lifting frame and is arranged horizontally; The lever driving sleeve is slidably connected to the lever driving rack and can move laterally relative to the lever driving rack; The lever drive motor is fixedly connected to the lever drive sleeve and is transmission-connected to the lever drive rack through the lever drive gear, and is used to drive the lever drive sleeve to move laterally; Wherein, the two shifting rods are fixedly connected to the two shifting rod driving sleeves respectively.

5. A bag sealing device, characterized in that: The invention comprises the bag clamping mechanism described in any one of claims 1 to 4.

6. The bag sealing device according to claim 5, characterized in that: The bag sealing device comprises a bag folding mechanism, which comprises: a bag folding clamp, a bag folding lifting mechanism and a bag folding moving mechanism; The bag folding clamp is movably arranged on the frame and is used to grasp the bag opening; The bag folding moving mechanism and the bag folding lifting mechanism are arranged on the frame and connected with the bag folding clamping claws, and are respectively used to drive the bag folding clamping claws to move longitudinally and lift and lower, so that the bag folding clamping claws fold the bag opening.

7. The bag sealing device according to claim 6, characterized in that: The bag folding moving mechanism comprises a bag folding lifting seat, a bag folding moving rack, a bag folding moving sliding sleeve, a bag folding moving motor and a bag folding moving gear; The bag folding lifting seat is connected to the bag clamping lifting mechanism and is driven by the bag clamping lifting mechanism to move up and down; The bag folding moving rack is fixedly connected to the bag folding lifting seat and is arranged longitudinally; The bag folding moving sliding sleeve is slidably connected to the bag folding lifting seat or the bag folding moving rack, and can move longitudinally relative to the bag folding moving rack; The bag folding moving motor is fixed on the bag folding moving sliding sleeve and is connected to the bag folding moving rack through the bag folding moving gear, so as to drive the bag folding moving sliding sleeve to move longitudinally; Wherein, the bag folding lifting mechanism is arranged on the bag folding moving sliding sleeve and is directly connected with the bag folding clamping claw.

8. The bag sealing device according to claim 7, characterized in that: The bag folding lifting mechanism comprises a bag folding lifting slide rail, a bag folding lifting rack, a bag folding lifting motor, a bag folding lifting gear and a bag folding lifting frame; The bag folding lifting slide rail is fixedly connected to the bag folding moving slide sleeve and is arranged vertically; The bag folding lifting rack is slidably connected to the bag folding lifting slide rail and can be lifted and lowered relative to the bag folding lifting slide rail; The bag folding lifting motor is fixedly connected to the bag folding lifting slide rail, and is transmission-connected to the bag folding lifting rack through the bag folding lifting gear; The bag folding lifting frame is fixedly connected to the bag folding lifting rack and is connected to the bag folding clamping claw.

9. The bag sealing device according to claim 8, characterized in that: The bag sealing device also includes a sealing mechanism, which includes a sealing lifting mechanism, a sealing moving mechanism and a labeling device; The labeling device is used to label the bag opening; The sealing moving mechanism and the sealing lifting mechanism are arranged on the bag folding lifting frame and connected to the labeling device, and are respectively used to drive the lifting mechanism and longitudinal movement of the labeling device so that the labeling device can move to the preset labeling position of the bag opening.

10. The bag sealing device according to claim 9, characterized in that: The sealing moving mechanism comprises: a sealing moving rack longitudinally fixed on the bag folding lifting frame, a sealing moving sleeve slidably sleeved with the sealing moving rack, a sealing moving motor fixedly connected with the sealing moving sleeve, and a sealing moving gear connected with the output shaft of the sealing moving motor and the sealing moving rack; The sealing lifting mechanism comprises: a sealing lifting rack fixedly connected to the sealing moving sliding sleeve, a sealing lifting frame slidably connected to the sealing lifting rack in the vertical direction, a sealing lifting motor fixedly connected to the sealing lifting frame, and a sealing lifting gear connected to the output shaft of the sealing lifting motor and the sealing lifting rack; Wherein, the labeling device is arranged on the sealing lifting frame, and is provided with a discharge cylinder for outputting stickers, and a waste cylinder for recycling stickers.

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