M-bag heat-sealing device and heat-sealing method

Abstract

The invention aims at disclosing an M-bag heat-sealing device and a heat-sealing method, and relates to the technical field of M-bag heat-sealing packaging, the M-bag heat-sealing device comprises a transferring assembly, a material receiving belt, a vacuumizing assembly and a heat-sealing assembly; the transplanting assembly is used for transferring the M bags to the material receiving belt in an opened posture; the vacuumizing assembly comprises a first lifting air cylinder, a first finger clamping air cylinder, a lifting support and a long-strip-shaped vacuum adsorption nozzle. The first finger clamping air cylinder drives the first shaping plate and the second shaping plate to be close to or away from each other. The heat sealing assembly comprises a first telescopic air cylinder, a first heat sealing assembly, a second telescopic air cylinder and a second heat sealing assembly, the first heat sealing strip and the third heat sealing strip are paired to form first heat sealing, and the second heat sealing strip and the fourth heat sealing strip are paired to form second heat sealing; the machine has the technical effects that the M bags loaded with materials are vacuumized to form a first heat seal and a second heat seal, and waste materials are cut, so that efficient vacuumizing and heat seal are realized at the same station, and the structure is compact.

Description

Technical Field

[0001] The invention relates to the technical field of M-bag heat-sealing packaging, in particular to an M-bag heat-sealing device and a heat-sealing method. Background Art

[0002] An M bag is a bag with an M-shaped cross-section on both sides of the bag body. After the M bag is loaded with materials, how to quickly seal it and maintain the vacuum degree inside it to improve production efficiency is a technical challenge that needs to be overcome.

[0003] In view of this, it is necessary to develop a M bag heat sealing device and a heat sealing method. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to disclose an M bag heat sealing device and a heat sealing method.

[0005] The first object of the present invention is to provide an M bag heat sealing device.

[0006] The second object of the present invention is to provide an M bag heat sealing method.

[0007] To achieve the above first invention objective, the present invention provides an M bag heat sealing device, including a transfer component, a material receiving belt, a vacuum component and a heat sealing component; The transfer assembly transfers the M bags to the material receiving belt in an open posture; The vacuum pumping assembly includes a first lifting cylinder, a first clamping finger cylinder, a lifting bracket and a long strip vacuum suction nozzle, the first lifting cylinder drives the lifting bracket to lift, the first clamping finger cylinder is installed on the lifting bracket, the vacuum suction nozzle is installed on the lifting bracket, the first clamping finger cylinder drives the first shaping plate and the second shaping plate to move closer to or away from each other, the vacuum suction nozzle is located between the first shaping plate and the second shaping plate, and the three are in the same vertical plane; The heat sealing assembly comprises a first telescopic cylinder, a first heat sealing assembly, a second telescopic cylinder and a second heat sealing assembly, the first telescopic cylinder drives the first heat sealing assembly to move, the second telescopic cylinder drives the second heat sealing assembly to move, the first heat sealing assembly comprises a first heat sealing strip, a second heat sealing strip and a first foam cotton seal, the first foam cotton seal is more protruding than the first heat sealing strip and the second heat sealing strip, the second heat sealing assembly comprises a third heat sealing strip, a fourth heat sealing strip and a second foam cotton seal, the second foam cotton seal is more protruding than the third heat sealing strip and the fourth heat sealing strip, the first heat sealing strip and the third heat sealing strip are paired to form a first heat seal, the second heat sealing strip and the fourth heat sealing strip are paired to form a second heat seal; A gap is provided between the first heat sealing strip and the second heat sealing strip, and the first foam cotton sealing strip is provided below the second heat sealing strip; A gap is arranged between the third heat sealing strip and the fourth heat sealing strip, and the second foam cotton sealing strip is arranged below the fourth heat sealing strip.

[0008] Preferably, the lifting bracket is U-shaped, and comprises a first vertical plate, a horizontal plate and a second vertical plate, the first clamping finger cylinder is installed on the first vertical plate, and the vacuum suction nozzle is installed on the second vertical plate.

[0009] Preferably, the first heat-sealing strip and the second heat-sealing strip are supported by a first foam pad, and the third heat-sealing strip and the fourth heat-sealing strip are supported by a first foam pad.

[0010] Preferably, the transplanting assembly comprises a moving module and a first moving plate and a second moving plate driven by the moving module; A first bracket, a first cylinder, a first suction cup, a first mounting plate, a second cylinder and a first vertical clamping plate are arranged below the first movable plate; A second bracket, a third cylinder, a second suction cup, a second mounting plate, a fourth cylinder and a second vertical clamping plate are arranged below the second movable plate; The first cylinder drives the first suction cup to extend and retract, and the third cylinder drives the second suction cup to extend and retract, so that the first suction cups move closer to or farther from the second suction cups; The second cylinder drives the first vertical holding plate to extend and retract, and the fourth cylinder drives the second vertical holding plate to extend and retract, so that the first vertical holding plates move closer to or away from the second vertical holding plate.

[0011] Preferably, the moving module comprises a linear module, an L-shaped connecting plate and a transverse connecting plate; The linear module is connected to the vertical portion of the L-shaped connecting plate, the horizontal portion of the L-shaped connecting plate is connected to the first movable plate, and both ends of the transverse connecting plate are respectively connected to the first movable plate and the second movable plate.

[0012] Preferably, the distance between the first heat seal and the second heat seal is 10 mm-15 mm.

[0013] Preferably, a first adsorption component and a second adsorption component are respectively arranged on both sides of the vacuum assembly; The first adsorption assembly includes a first telescopic module and a third suction cup, and the second adsorption assembly includes a second telescopic module and a fourth suction cup; The third suction cup and the fourth suction cup adsorb both sides of the bag opening of the M bag.

[0014] Preferably, a movable cutter is provided on the top of the first heat sealing assembly; A knife letting groove cooperating with the movable cutter is arranged on the top of the second heat sealing component.

[0015] Preferably, a second clamping finger cylinder is arranged below the transverse connecting plate.

[0016] Based on the same inventive principle, in order to solve the above-mentioned second inventive problem, the present invention provides an M-bag heat sealing method, using the M-bag heat sealing device described in the first invention, comprising the following steps: The transfer component transfers the M bags to the material receiving belt, and the material receiving belt holds the M bags; The third suction cup and the fourth suction cup suck the two sides of the M bag opening, so that the M bag is in an open state; The first lifting cylinder drives the vacuum suction nozzle to be inserted into the M bag in the open state, and the first shaping plate and the second shaping plate are respectively located at the folding marks on both sides of the M bag in the open state; The first clamping finger cylinder drives the first shaping plate and the second shaping plate to move closer to each other and fold the M bag; The first telescopic cylinder drives the first heat sealing component to contact one side of the M bag, and the second telescopic cylinder drives the second heat sealing component to contact the other side of the M bag, and the vacuum suction nozzle is sandwiched between the first foam cotton seal and the second foam cotton seal; The vacuum suction nozzle starts to evacuate and evacuates the inside of the M bag to a predetermined vacuum degree, and the vacuum suction nozzle is driven to rise and evacuate the M bag by the first lifting cylinder; The first heat sealing component and the second heat sealing component are started to form a first heat seal and a second heat seal on both sides of the M bag.

[0017] Compared with the prior art, the technical effects of the present invention are as follows: The purpose of the present invention is to evacuate the M bag containing materials and form the first heat seal and the second heat seal, and cut the waste material so that the materials in the M bag are in a certain vacuum environment, thereby realizing efficient vacuuming and heat sealing at the same workstation with a compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 (a) is a schematic cross-sectional view of an M bag.

[0020] FIG1( b ) is a cross-sectional schematic diagram of the M bag being adsorbed to an open state.

[0021] Figure 2 It is a schematic diagram of the main view of the M bag of the present invention.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the M bag heat sealing device of the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the transfer assembly of the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the transfer assembly of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the transfer assembly of the present invention.

[0026] Figure 7 The present invention Figure 6 Schematic diagram of the enlarged structure at B.

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the vacuum pumping component and the heat sealing component of the present invention.

[0028] Fig. 9 It is a three-dimensional structural schematic diagram of the vacuum pumping component and the heat sealing component of the present invention.

[0029] Fig.10 The present invention Fig. 9 Schematic diagram of the enlarged structure at C.

[0030] Fig.11 The present invention Figure 3 Schematic diagram of the enlarged structure at A.

[0031] Fig.12 It is a schematic flow diagram of the M bag heat sealing method of the present invention.

[0032] Among them, 1, transfer assembly; 11, mobile module; 111, linear module; 112, L-shaped connecting plate; 1121, vertical part; 1122, horizontal part; 113, transverse connecting plate; 114, second clamping cylinder; 12, first mobile plate; 121, first bracket; 122, first cylinder; 123, first suction cup; 124, first mounting plate; 125, second cylinder; 126, first vertical clamping plate; 13 1. The second movable plate; 131. The second bracket; 132. The third cylinder; 133. The second suction cup; 134. The second mounting plate; 135. The fourth cylinder; 136. The second vertical holding plate; 2. The material receiving belt; 3. The vacuum assembly; 31. The first lifting cylinder; 32. The first clamping cylinder; 33. The lifting bracket; 331. The first vertical plate; 332. The horizontal plate; 333. The second vertical plate; 34. The vacuum suction nozzle; 35. The first shaping plate; 36. The second shaping plate; 37. The first suction assembly; 371. The first telescopic module; 372. The third suction cup; 38. The second suction assembly; 381. The second telescopic module; 382. The fourth suction cup; 4. The heat sealing assembly; 41. The first telescopic cylinder; 42. The first heat sealing assembly; 421. The first heat sealing strip; 422. The second heat sealing strip; 423. The first foam cotton seal strip; 424. The first foam cotton pad; 43, second telescopic cylinder; 44, second heat sealing assembly; 441, third heat sealing strip; 442, fourth heat sealing strip; 443, second foam cotton seal strip; 444, second foam cotton pad; 445, knife groove; 45, movable cutter; 451, sharp blade; 5, M bag; 51, first heat seal; 52, second heat seal; 53, bag opening; 54, bag body; 55, waste; 56, folding mark; 6, motor; 7, belt. DETAILED DESCRIPTION

[0033] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. Example 1

[0035] See Figures 1 to Fig.10 As shown, this embodiment discloses a specific implementation of an M-bag heat sealing device (hereinafter referred to as "heat sealing device").

[0036] M bag heat sealing device, see Figures 1 to Fig.10As shown, it includes a transfer component 1, a material receiving belt 2, a vacuum component 3 and a heat sealing component 4; the transfer component 1 transfers the M bag 5 to the material receiving belt 2 in an open posture; the vacuum component 3 includes a first lifting cylinder 31, a first clamping finger cylinder 32, a lifting bracket 33 and a long strip of vacuum suction nozzle 34, the first lifting cylinder 31 drives the lifting bracket 33 to rise and fall, the first clamping finger cylinder 32 is installed on the lifting bracket 33, the vacuum suction nozzle 34 is installed on the lifting bracket 33, the first clamping finger cylinder 32 drives the first shaping plate 35 and the second shaping plate 36 to lean against each other The vacuum suction nozzle 34 is located between the first shaping plate 35 and the second shaping plate 36, and the three are in the same vertical plane; the heat sealing assembly 4 includes a first telescopic cylinder 41, a first heat sealing assembly 42, a second telescopic cylinder 43 and a second heat sealing assembly 44, the first telescopic cylinder 41 drives the first heat sealing assembly 42 to move, the second telescopic cylinder 43 drives the second heat sealing assembly 44 to move, the first heat sealing assembly 42 includes a first heat sealing strip 421, a second heat sealing strip 422 and a first foam cotton seal 423, the first foam cotton seal 423 is shorter than the first heat sealing strip The first heat seal strip 421 and the second heat seal strip 422 are protruding, the second heat seal assembly 44 includes a third heat seal strip 441, a fourth heat seal strip 442 and a second foam seal strip 443, the second foam seal strip 443 is more protruding than the third heat seal strip 441 and the fourth heat seal strip 442, the first heat seal strip 421 and the third heat seal strip 441 are paired to form a first heat seal 51, the second heat seal strip 422 and the fourth heat seal strip 442 are paired to form a second heat seal 52; the first heat seal strip 421 and the second heat seal strip 422 are supported by the first foam pad 424, the third The heat seal strip 441 and the fourth heat seal strip 442 are supported by the second foam pad 444. The presence of the first foam pad 424 and the second foam pad 444 avoids hard collision during the heat sealing process, so that the first heat seal 51 and the second heat seal 52 are realized in a buffer environment; a gap is set between the first heat seal strip 421 and the second heat seal strip 422, and the first foam seal strip 423 is set below the second heat seal strip 422; a gap is set between the third heat seal strip 441 and the fourth heat seal strip 442, and the second foam seal strip 443 is set below the fourth heat seal strip 442. The first screw rod 46 drives the first heat seal assembly 42 to rise and fall along the first vertical track 47, and the second screw rod 48 drives the second heat seal assembly 44 to rise and fall along the second vertical track 49. The motor 6 drives the first screw rod 46 and the second screw rod 48 to rotate synchronously through the belt 7, so that the first heat seal assembly 42 and the second heat seal assembly 44 rise and fall synchronously to adjust the positions of the first heat seal 51 and the second heat seal 52.

[0037] Specifically, see FIG. 1 , see FIG. 1 (a), the cross-sections of both sides of the M bag 5 are M-shaped, the middle of the M bag is two layers, and the two sides are four layers; see FIG. 1 (b) is a schematic diagram of the M bag 5 carrying materials and in an open state; see Figure 2 The purpose of this embodiment is to evacuate the M bag 5 and form a first heat seal 51 and a second heat seal 52. The distance between the first heat seal 51 and the second heat seal 52 is 10mm-15mm. After the heat seal is completed, Figure 2 The dotted line L cuts off the waste.

[0038] See also Figure 3 , Figure 8 and Fig. 9 The lifting bracket 33 is U-shaped, and the lifting bracket 33 includes a first vertical plate 331, a horizontal plate 332 and a second vertical plate 333. The first clamping finger cylinder 32 is installed on the first vertical plate 331, and the vacuum suction nozzle 34 is installed on the second vertical plate 333. The vacuum suction nozzle 34 is located between the first shaping plate 35 and the second shaping plate 36 and the three are in the same vertical plane. When the first clamping finger cylinder 32 drives the first shaping plate 35 and the second shaping plate 36 to approach each other, the opening of the M bag is closed.

[0039] See also Figures 3 to 7The working principle of the transplanting assembly 1 is as follows: the transplanting assembly 1 includes a moving module 11 and a first moving plate 12 and a second moving plate 13 driven by the moving module 11; a first bracket 121, a first cylinder 122, a first suction cup 123, a first mounting plate 124, a second cylinder 125 and a first vertical clamping plate 126 are arranged below the first moving plate 12; a second bracket 131, a third cylinder 132, a second suction cup 133, a second mounting plate 134, a fourth cylinder 135 and a second vertical clamping plate 136 are arranged below the second moving plate 13; the first cylinder 122 drives the first suction cup 123 to extend and retract, the third cylinder 132 drives the second suction cup 133 to extend and retract, the first suction cup 123 are close to or away from the second suction cup 133; the second cylinder 125 drives the first vertical holding plate 126 to extend and retract, and the fourth cylinder 135 drives the second vertical holding plate 136 to extend and retract, and the first vertical holding plates 126 are close to or away from the second vertical holding plate 136; the mobile module 11 includes a linear module 111, an L-shaped connecting plate 112 and a transverse connecting plate 113; the linear module 111 is connected to the vertical part 1121 of the L-shaped connecting plate 112, the horizontal part 1122 of the L-shaped connecting plate 112 is connected to the first mobile plate 12, and the two ends of the transverse connecting plate 113 are respectively connected to the first mobile plate 12 and the second mobile plate 13, and the first mobile plate 12 and the second mobile plate 13 are connected. The two movable plates 13 are connected as a whole through a transverse connecting plate 113, and a second clamping finger cylinder 114 is arranged below the transverse connecting plate 113; the M bag 5 includes a bag opening 53 and a bag body 54, and the first suction cup 123 and the second suction cup 133 respectively adsorb the two sides of the outside of the bag opening 53 of the M bag; the first vertical clamping plate 126 and the second vertical clamping plate 136 respectively clamp the two sides of the bag body 54 of the M bag, and the height of the first vertical clamping plate 126 and the second vertical clamping plate 136 is slightly smaller than the height of the bag body 54 of the M bag, so that the first vertical clamping plate 126 and the second vertical clamping plate 136 can clamp almost the entire height range of the bag body 54; the specific working principle is as follows: the first cylinder 122 is installed on the inner side of the first bracket 121, and the third cylinder 132 is installed on the inner side of the second bracket 131; the first mounting plate 124 is installed below the first bracket 121, and the second mounting plate 134 is installed below the second bracket 131; the third slide rail 1241 is installed below the first mounting plate 124, and the fourth slide rail 1341 is installed below the second mounting plate 134; the second cylinder 125 drives the first vertical holding plate 126 to move along the third slide rail 1241; the fourth cylinder 135 drives the second vertical holding plate 136 to move along the fourth slide rail 1341; the M bag 5 contains materials, such as a plurality of stacked material trays;When the M bag 5 is clamped (the first vertical clamping plate 126 and the second vertical clamping plate 136 clamp it) and the bag opening is adsorbed (the first suction cup 123 and the second suction cup 133 adsorb the two sides of the outside of the bag opening 53 of the M bag respectively), the first moving plate 12 and the second moving plate 13 are driven by the moving module 11 to move synchronously, so that the M bag 5 is transferred to the material receiving belt 2. ;

[0040] See also Figure 3 and Fig.11 , a first adsorption component 37 and a second adsorption component 38 are respectively arranged on both sides of the vacuum component 3; the first adsorption component 37 includes a first telescopic module 371 and a third suction cup 372, and the second adsorption component 38 includes a second telescopic module 381 and a fourth suction cup 382; the third suction cup 372 and the fourth suction cup 382 adsorb both sides of the bag opening 53 of the M bag 5; the third suction cup 372 and the first suction cup 123 are staggered in the height direction, and the fourth suction cup 382 and the second suction cup 133 are staggered in the height direction. When the M bag 5 is transferred to the receiving belt 2, the third suction cup 372 and the fourth suction cup 382 adsorb both sides of the bag opening 53 of the M bag 5, and the first suction cup 123 and the second suction cup 133 retract, so that the M bag 5 always remains in an open state.

[0041] See also Figure 8 , along Figure 2 The working principle of cutting waste material by the dotted line L is as follows: a movable cutter 45 is arranged on the top of the first heat sealing component 42, and the movable cutter 45 reciprocates along the top of the first heat sealing component 42. The movable cutter 45 has two sharp edges 451, and the two sharp edges 451 can cut the waste material 55 during the reciprocating sliding process to ensure that the waste material 55 is completely cut off; a knife groove 445 cooperating with the movable cutter 45 is arranged on the top of the second heat sealing component 44; when cutting off the waste material 55, the first suction cup 123 and the second suction cup 133 have returned to their positions, and the second clamping finger cylinder 114 under the transverse connecting plate 113 clamps the waste material 55.

[0042] The working process of the M bag heat sealing device of this embodiment is as follows: In the first step, the transfer component 1 transfers the M bag 5 to the material receiving belt 2, and the material receiving belt 2 holds the M bag 5; specifically, the first suction cup 123 and the second suction cup 133 are arranged at one end of the first movable plate 12 and the second movable plate 13, and the transverse connecting plate 113 and the second clamping finger cylinder 114 are arranged at the other end of the first movable plate 12 and the second movable plate 13, and the M bag 5 in the open state is transferred to the material receiving belt 2 by the first movable plate 12 and the second movable plate 13.

[0043] In the second step, the third suction cup 372 and the fourth suction cup 382 suck both sides of the bag opening 53 of the M bag 5. During this process, the third suction cup 372 and the fourth suction cup 382 first approach each other and then move away from each other, so that the M bag 5 is in an open state; after the third suction cup 372 and the fourth suction cup 382 finish sucking the bag opening 53, the first movable plate 12 and the second movable plate 13 drive the first suction cup 123 and the second suction cup 133 to return to their positions, and the open state of the M bag 5 is achieved by the third suction cup 372 and the fourth suction cup 382.

[0044] In the third step, the first lifting cylinder 31 drives the vacuum suction nozzle 34 to be inserted into the M bag in the open state. The vacuum suction nozzle 34 is a flat and narrow rectangle. The first shaping plate 35 and the second shaping plate 36 are respectively located at the folding marks 56 on both sides of the M bag 5 in the open state, ready for bag folding.

[0045] In the fourth step, the first clamping finger cylinder 32 drives the first shaping plate 35 and the second shaping plate 36 to move closer to each other and fold the M bag 5. After folding, the third suction cup 372 and the fourth suction cup 382 return to their original positions.

[0046] In the fifth step, the first telescopic cylinder 41 drives the first heat sealing component 42 to contact one side of the M bag 5, and the second telescopic cylinder 43 drives the second heat sealing component 44 to contact the other side of the M bag 5. The vacuum suction nozzle 34 is clamped between the first foam cotton seal 423 and the second foam cotton seal 443. In order to press the vacuum suction nozzle 34 firmly, the first foam cotton seal 423 and the second foam cotton seal 443 will be deformed.

[0047] In the sixth step, the vacuum suction nozzle 34 starts vacuuming and draws the inside of the M bag 5 to a predetermined vacuum degree, such as a vacuum degree of 30%-70%. The vacuum suction nozzle 34 is driven to rise and remove the M bag 5 through the first lifting cylinder 31. During the removal process, the first foam cotton seal 423 and the second foam cotton seal 443 will always press the bag opening 53.

[0048] In the seventh step, the first heat sealing assembly 42 and the second heat sealing assembly 44 are started to form the first heat seal and the second heat seal on both sides of the M bag. Specifically, the first heat sealing strip 421 and the third heat sealing strip 441 are heated to a predetermined temperature at the same time, and the first heat seal 51 is formed by heat sealing; the second heat sealing strip 422 and the fourth heat sealing strip 442 are heated to a predetermined temperature at the same time, and the second heat seal 52 is formed by heat sealing, so that two heat seals are realized, which can effectively prevent the occurrence of air leakage.

[0049] In the eighth step, the second clamping finger cylinder 114 below the transverse connecting plate 113 clamps the waste material 55, and the moving cutter 45 slides along the top of the first heat sealing assembly 42 and moves along the Figure 2 The dotted line L completes the trimming of the waste. Example 2

[0050] Ginseng Fig.12 As shown, this embodiment discloses a specific implementation of an M bag heat sealing method.

[0051] M bag heat sealing method, reference Fig.12 As shown, the M bag heat sealing device described in Example 1 includes the following steps: Step S1: The transfer assembly 1 transfers the M bags 5 to the material receiving belt 2, and the material receiving belt 2 holds the M bags 5; specifically, the first suction cup 123 and the second suction cup 133 are arranged at one end of the first moving plate 12 and the second moving plate 13, and the transverse connecting plate 113 and the second clamping finger cylinder 114 are arranged at the other end of the first moving plate 12 and the second moving plate 13, and the M bags 5 in the open state are transferred to the material receiving belt 2 by the first moving plate 12 and the second moving plate 13; Step S2: the third suction cup 372 and the fourth suction cup 382 suck both sides of the bag opening 53 of the M bag 5. During this process, the third suction cup 372 and the fourth suction cup 382 first approach each other and then move away from each other, so that the M bag 5 is in an open state; after the third suction cup 372 and the fourth suction cup 382 finish sucking the bag opening 53, the first movable plate 12 and the second movable plate 13 drive the first suction cup 123 and the second suction cup 133 to return to their positions, and the open state of the M bag 5 is achieved by the third suction cup 372 and the fourth suction cup 382; Step S3: The first lifting cylinder 31 drives the vacuum suction nozzle 34 to be inserted into the M bag in the open state. The vacuum suction nozzle 34 is a flat and narrow rectangle. The first shaping plate 35 and the second shaping plate 36 are respectively located at the folding marks 56 on both sides of the M bag 5 in the open state, and are ready for bag folding. Step S4: the first clamping finger cylinder 32 drives the first shaping plate 35 and the second shaping plate 36 to move closer to each other and fold the M bag 5. After folding, the third suction cup 372 and the fourth suction cup 382 return to their original positions; Step S5: the first telescopic cylinder 41 drives the first heat sealing component 42 to contact one side of the M bag 5, and the second telescopic cylinder 43 drives the second heat sealing component 44 to contact the other side of the M bag 5. The vacuum suction nozzle 34 is sandwiched between the first foam cotton seal 423 and the second foam cotton seal 443. In order to press the vacuum suction nozzle 34 firmly, the first foam cotton seal 423 and the second foam cotton seal 443 will be deformed; Step S6: the vacuum suction nozzle 34 starts to evacuate and evacuates the inside of the M bag 5 to a predetermined vacuum degree, such as a vacuum degree of 30%-70%, and the vacuum suction nozzle 34 is driven to rise and extract the M bag 5 through the first lifting cylinder 31. During the extraction process, the first foam cotton seal 423 and the second foam cotton seal 443 always press the bag opening 53; Step S7: Start the first heat sealing assembly 42 and the second heat sealing assembly 44 to form a first heat seal and a second heat seal on both sides of the M bag. Specifically, the first heat sealing strip 421 and the third heat sealing strip 441 are heated to a predetermined temperature at the same time, and heat-sealed to form a first heat seal 51; the second heat sealing strip 422 and the fourth heat sealing strip 442 are heated to a predetermined temperature at the same time, and heat-sealed to form a second heat seal 52, and two heat seals are achieved, which can effectively prevent the occurrence of air leakage; Step S8: The second clamping finger cylinder 114 below the transverse connecting plate 113 clamps the waste material 55, and the moving cutter 45 slides along the top of the first heat sealing assembly 42 and moves along the Figure 2 The dotted line L completes the trimming of the waste.

[0052] For the parts in Example 2 that are the same as those in Example 1, please refer to Example 1 and will not be repeated here.

Claims

1. M bag heat sealing device, characterized in that, It includes transfer components, material receiving belts, vacuum components and heat sealing components; The transfer assembly transfers the M bags to the material receiving belt in an open posture; The vacuum pumping assembly includes a first lifting cylinder, a first clamping finger cylinder, a lifting bracket and a long strip vacuum suction nozzle, the first lifting cylinder drives the lifting bracket to lift, the first clamping finger cylinder is installed on the lifting bracket, the vacuum suction nozzle is installed on the lifting bracket, the first clamping finger cylinder drives the first shaping plate and the second shaping plate to move closer to or away from each other, the vacuum suction nozzle is located between the first shaping plate and the second shaping plate, and the three are in the same vertical plane; The heat sealing assembly comprises a first telescopic cylinder, a first heat sealing assembly, a second telescopic cylinder and a second heat sealing assembly, the first telescopic cylinder drives the first heat sealing assembly to move, the second telescopic cylinder drives the second heat sealing assembly to move, the first heat sealing assembly comprises a first heat sealing strip, a second heat sealing strip and a first foam cotton seal, the first foam cotton seal is more protruding than the first heat sealing strip and the second heat sealing strip, the second heat sealing assembly comprises a third heat sealing strip, a fourth heat sealing strip and a second foam cotton seal, the second foam cotton seal is more protruding than the third heat sealing strip and the fourth heat sealing strip, the first heat sealing strip and the third heat sealing strip are paired to form a first heat seal, the second heat sealing strip and the fourth heat sealing strip are paired to form a second heat seal; A gap is provided between the first heat sealing strip and the second heat sealing strip, and the first foam cotton sealing strip is provided below the second heat sealing strip; A gap is arranged between the third heat sealing strip and the fourth heat sealing strip, and the second foam cotton sealing strip is arranged below the fourth heat sealing strip.

2. The M bag heat sealing device according to claim 1, characterized in that: The lifting bracket is U-shaped and includes a first vertical plate, a horizontal plate and a second vertical plate. The first clamping finger cylinder is installed on the first vertical plate, and the vacuum adsorption nozzle is installed on the second vertical plate.

3. The M bag heat sealing device according to claim 1, characterized in that: The first heat-sealing strip and the second heat-sealing strip are supported by a first foam pad, and the third heat-sealing strip and the fourth heat-sealing strip are supported by the first foam pad.

4. The M-bag heat sealing device according to claim 1, characterized in that: The transplanting assembly includes a moving module and a first moving plate and a second moving plate driven by the moving module; A first bracket, a first cylinder, a first suction cup, a first mounting plate, a second cylinder and a first vertical clamping plate are arranged below the first movable plate; A second bracket, a third cylinder, a second suction cup, a second mounting plate, a fourth cylinder and a second vertical clamping plate are arranged below the second movable plate; The first cylinder drives the first suction cup to extend and retract, and the third cylinder drives the second suction cup to extend and retract, so that the first suction cups move closer to or farther from the second suction cups; The second cylinder drives the first vertical holding plate to extend and retract, and the fourth cylinder drives the second vertical holding plate to extend and retract, so that the first vertical holding plates move closer to or away from the second vertical holding plate.

5. The M bag heat sealing device as claimed in claim 4, characterized in that: The movable module includes a linear module, an L-shaped connecting plate and a transverse connecting plate; The linear module is connected to the vertical portion of the L-shaped connecting plate, the horizontal portion of the L-shaped connecting plate is connected to the first movable plate, and both ends of the transverse connecting plate are respectively connected to the first movable plate and the second movable plate.

6. The M-bag heat sealing device according to claim 4, characterized in that: The distance between the first heat seal and the second heat seal is 10 mm-15 mm.

7. The M-bag heat sealing device according to any one of claims 1 to 6, characterized in that: A first adsorption component and a second adsorption component are respectively arranged on both sides of the vacuum pumping component; The first adsorption assembly includes a first telescopic module and a third suction cup, and the second adsorption assembly includes a second telescopic module and a fourth suction cup; The third suction cup and the fourth suction cup adsorb both sides of the bag opening of the M bag.

8. The M-bag heat sealing device according to claim 7, characterized in that: A movable cutter is arranged on the top of the first heat sealing assembly; A knife letting groove cooperating with the movable cutter is arranged on the top of the second heat sealing component.

9. The M-bag heat sealing device according to claim 5, characterized in that: A second clamping finger cylinder is arranged below the transverse connecting plate. 10.M bag heat sealing method, characterized in that, The M bag heat sealing device according to any one of claims 1 to 9 comprises the following steps: The transfer component transfers the M bags to the material receiving belt, and the material receiving belt holds the M bags; The third suction cup and the fourth suction cup suck the two sides of the M bag opening, so that the M bag is in an open state; The first lifting cylinder drives the vacuum suction nozzle to be inserted into the M bag in the open state, and the first shaping plate and the second shaping plate are respectively located at the folding marks on both sides of the M bag in the open state; The first clamping finger cylinder drives the first shaping plate and the second shaping plate to move closer to each other and fold the M bag; The first telescopic cylinder drives the first heat sealing component to contact one side of the M bag, and the second telescopic cylinder drives the second heat sealing component to contact the other side of the M bag, and the vacuum suction nozzle is sandwiched between the first foam cotton seal and the second foam cotton seal; The vacuum suction nozzle starts to evacuate and evacuates the inside of the M bag to a predetermined vacuum degree, and the vacuum suction nozzle is driven to rise and evacuate the M bag by the first lifting cylinder; The first heat sealing component and the second heat sealing component are started to form a first heat seal and a second heat seal on both sides of the M bag.

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