Modified atmosphere packaging machine and packaging process thereof

Abstract

The invention relates to the technical field of packaging machines, and discloses a modified atmosphere packaging machine and a packaging technology thereof. The workbench is provided with a packaging mechanism used for packaging boxes, a feeding mechanism used for transporting the boxes to be packaged in the direction of the packaging mechanism, a material arranging mechanism used for adjusting the distance between every two adjacent boxes and a discharging mechanism used for transporting the packaged boxes in the direction away from the packaging mechanism. The box packaging device has the effect of improving the box packaging efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of packaging machines, and in particular to a modified atmosphere packaging machine and a packaging process thereof. Background Art

[0002] ‌ Modified atmosphere packaging machine is a device that can evacuate and inflate boxes and complete the process of sealing boxes and packaging films. Modified atmosphere packaging machines are often used in the food industry to preserve food for a long time.

[0003] A packaging machine in the related technology includes a frame, on which an upper mold, a lower mold and a lifting mechanism for driving the upper mold and the lower mold to close / open the mold are arranged, a winding structure for winding the film is arranged on the frame, and a sealing mechanism and a cutting mechanism are arranged in the upper mold.

[0004] The existing box packaging process requires the staff to place the box to be sealed on the lower mold, and then start the lifting mechanism to close the lower mold and the upper mold, so that the box and the film are sealed and the film is cut, and then wait for the lower mold and the upper mold to separate, and the staff will unload the box from the lower mold. The packaging process requires the staff to perform multiple operations, which takes a long time to seal the box and leads to low packaging efficiency. Summary of the invention

[0005] In order to improve the packaging efficiency of boxes, the present application provides a modified atmosphere packaging machine and a packaging process thereof.

[0006] The present application provides a modified atmosphere packaging machine, which adopts the following technical solution: A modified atmosphere packaging machine, comprising: Workbench; Packaging mechanism: set on the workbench, used for packaging boxes; Feeding mechanism: It is arranged on the workbench and is used to transport the boxes to be packaged toward the packaging mechanism; Material sorting mechanism: It is set on the workbench, located between the feeding mechanism and the packaging mechanism, and is used to adjust the distance between two adjacent boxes; Outfeed mechanism: It is set on the workbench and used to transport the packaged boxes away from the packaging mechanism; Transfer mechanism: It is set on the workbench and is used to move the boxes from the material sorting mechanism to the packaging mechanism, and is also used to move the packaged boxes from the packaging mechanism to the discharging mechanism.

[0007] By adopting the above technical solution, first, the box is placed on the feeding mechanism, the feeding mechanism moves the box to the material sorting mechanism, the distance between two adjacent boxes on it is adjusted by the material sorting structure, and then the box is moved from the material sorting mechanism to the packaging mechanism by the transfer mechanism, and the packaging mechanism packages the box, and finally the box is moved from the packaging mechanism to the discharging mechanism by the transfer mechanism, and the discharging mechanism outputs the packaged box, completing the box packaging action; the feeding mechanism, the material sorting mechanism, the transportation mechanism, the packaging mechanism and the discharging mechanism are used to realize automatic box packaging, realize the automation of the box packaging process, and improve the box packaging efficiency.

[0008] Optionally, the workbench is provided with a first vertical plate and a second vertical plate, and the packaging mechanism includes a fixing frame arranged between the first vertical plate and the second vertical plate, a fixing plate arranged below the fixing frame, an upper mold assembly arranged below the fixing plate, a heat sealing assembly and a cutting assembly arranged in the upper mold assembly, an air circuit assembly and a vacuum assembly arranged on the upper mold assembly, a film placing assembly arranged on the first vertical plate, a film collecting assembly arranged on the second vertical plate, and a lower mold assembly and a lifting assembly arranged on the workbench, the lifting assembly is used for driving the lower mold assembly and the upper mold assembly to close / open the mold, the film placing assembly and the film collecting assembly cooperate to make the packaging film move between the upper mold assembly and the lower mold assembly, the heat sealing assembly is used for heat-sealing the packaging film and the box, the cutting assembly is used for cutting the packaging film, the vacuum assembly is used for exhausting air, and the air circuit assembly is used for inflating.

[0009] By adopting the above technical scheme, after the transfer mechanism moves the box to the lower mold assembly, first, the lifting assembly drives the lower mold assembly to rise, so that the lower mold assembly and the upper mold assembly are molded together; secondly, the vacuum assembly performs an air extraction action, and then the inflation assembly performs an inflation action; thirdly, the heat sealing assembly heat-seals the packaging film and the box, and then the cutting assembly cuts the packaging film; finally, the lifting assembly drives the lower mold assembly to descend, so that the lower mold assembly and the upper mold assembly open the mold, and the transfer mechanism moves the box from the lower mold assembly to the discharge mechanism to complete the packaging of the box; after the upper mold assembly and the lower mold assembly are molded together and the packaging of the box is completed, the upper mold assembly and the lower mold assembly open the mold, the film releasing assembly releases the packaging film, and the film collecting assembly rewinds the cut packaging film, so that the intact packaging film is moved between the upper mold assembly and the lower mold assembly to prepare for the next packaging process.

[0010] Optionally, the upper mold assembly includes an upper mold plate, and an upper mold locking assembly connecting the upper mold plate and the fixed plate is arranged between the upper mold plate and the fixed plate. The upper mold locking assembly includes two fixing bars arranged below the fixed plate, a locking plate arranged below the fixing bars, a locking column arranged above the locking plate, and a locking cylinder arranged above the fixed plate. A fixing groove is provided at one end of the two fixing bars close to each other, and the upper mold plate is slidably arranged in the fixing groove. A locking hole for inserting the locking column is provided on the lower end surface of the upper mold plate, and the locking cylinder is used to drive the locking plate to rise and fall.

[0011] By adopting the above technical solution, the upper template of the upper mold assembly is slid into the fixed groove until the locking hole is aligned with the locking column. The locking cylinder drives the locking plate and the locking column to rise, so that the locking column is inserted into the locking hole. The position of the upper template is locked by the locking column, so that the upper mold assembly is not easily moved in the horizontal direction during the working process.

[0012] Optionally, the upper mold assembly includes an upper mold base arranged below the upper mold plate, and a circuit assembly is arranged above the upper mold base. The circuit assembly includes an electrical fixed joint arranged above the upper mold base, an electrical movable joint arranged on a fixed plate, and a vertical displacement assembly. The vertical displacement assembly is used to drive the electrical movable joint to engage and disengage with the electrical fixed joint, and the electrical fixed joint is electrically connected to the heat sealing assembly.

[0013] By adopting the above technical solution, the vertical displacement assembly drives the electrical movable joint to connect with the electrical fixed joint, so that the heat sealing assembly is energized, and the packaging machine can heat-seal the packaging film and the box; when the upper mold assembly, heat sealing assembly, etc. need to be repaired or replaced, the vertical displacement assembly can drive the electrical movable joint to separate from the electrical fixed joint, so that the heat sealing assembly is powered off, thereby improving the safety of the staff during maintenance.

[0014] Optionally, the vertical displacement assembly includes a vertical rod arranged above the fixed plate, a horizontal plate arranged on the side of the vertical rod away from the fixed plate, a horizontal block arranged between the horizontal plate and the fixed plate, and a vertical cylinder arranged on the horizontal plate, the vertical cylinder is used to drive the horizontal block to rise and fall, the electrical movable joint is arranged on the horizontal block, a first fixing hole through which the electrical movable joint can pass is opened on the fixed plate, and a second fixing hole through which the electrical movable joint can pass is opened on the upper template.

[0015] By adopting the above technical solution, the vertical cylinder drives the horizontal block and the electrical movable joint to descend, so that the electrical movable joint is plugged into the electrical fixed joint, thereby electrically connecting the electrical movable joint to the electrical fixed joint; conversely, the vertical cylinder drives the electrical movable joint to rise, so that the electrical movable joint is disconnected from the electrical fixed joint.

[0016] Optionally, a supporting frame is provided on the workbench, the lower mold assembly includes a lower mold base placed on the supporting frame, the lifting assembly includes a support frame arranged below the workbench, a first connecting rod rotatably connected to the support frame, a second connecting rod rotatably connected to the first connecting rod, a lifting plate located below the support frame, a lifting rod arranged above the lifting plate, a lifting motor arranged on the support frame, and a bottom plate arranged between the lower mold base and the workbench, the second connecting rod is rotatably connected to the lifting plate, the lifting motor is used to drive the first connecting rod to reciprocate, the upper end of the lifting rod abuts against the bottom of the bottom plate, a locking block is arranged on the bottom plate, and a slot for inserting the locking block is provided on the lower end surface of the lower mold base.

[0017] By adopting the above technical solution, the upper mold assembly is first placed on the support rack, and the lifting motor is started again. The lifting motor drives the first connecting rod to rotate, and the first connecting rod drives the second connecting rod, the lifting plate, the lifting rod, the bottom plate and the locking block to rise together, so that the locking block is inserted into the slot, so that the lower mold seat is not easy to move in the horizontal direction on the bottom plate, so that the lower mold assembly and the upper mold assembly can be more accurately molded, and the lower mold assembly can be safer during the lifting process.

[0018] Optionally, an inflation groove is provided on the lifting rod, and an inflation joint that can be connected to a vacuum device is provided on the lifting rod. A mounting groove is provided above the base plate, and a mounting hole is provided on the bottom wall of the mounting groove. An inflation ring that can be inserted into the mounting hole is provided above the lifting rod, and a mounting joint connected to the inflation ring is provided in the mounting groove. An inflation channel connected to the interior of the lower mold base is provided on the lower end surface of the lower mold base, and the inflation channel is connected to the inflation ring.

[0019] By adopting the above technical solution, the inflation device is started, so that the gas passes through the inflation joint, the inflation tube, the installation joint and the inflation channel, and then enters the lower mold base, thereby realizing the inflation work of the lower mold base and the box body.

[0020] Optionally, an exhaust pipe is vertically provided on the workbench, and an exhaust joint that can be connected to the exhaust equipment is provided below the exhaust pipe. The end of the exhaust joint away from the exhaust pipe is connected to the bottom of the lifting plate, and a socket for inserting the exhaust pipe is provided below the bottom of the base plate. An exhaust channel connected to the interior of the lower mold base is provided below the lower mold base, and the exhaust channel can be connected to the socket.

[0021] By adopting the above technical solution, the exhaust equipment is started, and the air inside the lower mold base is discharged through the exhaust channel, the exhaust pipe and the exhaust joint, thereby realizing the exhaust work of the lower mold base.

[0022] The cam is an axially traversing mechanism which is configured to move the film collecting motor to the cam face, the cam being ...

[0023] The film-winding motor drives the operating shell and the operating cover to rotate, and the operating shell makes the active disk rotate synchronously through the active rod. The operating spring drives the active disk to abut against the driven disk, so that the active disk rotates and drives the driven disk, the film-winding rod and the film-winding roller to rotate together, so that the film-winding roller rolls up the packaging film; when the packaging film residue between the film-winding roller and the upper mold assembly is in an untensioned state, the resistance of the film-winding roller to roll up the packaging film residue is small, and in the process of the film-winding motor driving the film-winding roller to move through the transmission assembly, the transmission between the active disk and the driven disk will not slip, so that the film-winding roller can smoothly carry out the film-winding process; when the packaging film residue between the film-winding roller and the upper mold assembly is in a tensioned state, the resistance of the film-winding roller to roll up the packaging film residue is large, and in the process of the film-winding motor driving the film-winding roller to move through the transmission assembly, the transmission between the active disk and the driven disk will slip, that is, the active disk rotates, while the driven disk and the film-winding roller do not rotate, so as to avoid the packaging film residue from breaking during the rolling process and reduce the failure probability of the packaging machine.

[0024] The present application provides a packaging process of a modified atmosphere packaging machine, which adopts the following technical solution: A packaging process of a modified atmosphere packaging machine, using the modified atmosphere packaging machine, comprises the following steps: Step 1: Loading process: placing the box on the feeding mechanism, which then transports the box to the material sorting mechanism; Step 2: Material sorting process, the distance between adjacent boxes is adjusted by the material sorting mechanism, and the boxes are transported to the packaging mechanism; Step 3: Transfer process: the box is transferred to the lower mold assembly by the transfer mechanism; Step 4, packaging process, the lifting component drives the lower mold component and the box to rise, so that the lower mold component and the upper mold component are molded together, and then the vacuum component, the exhaust pipe and the exhaust joint cooperate to perform the exhaust action, followed by the air path component, the lifting rod and the inflation joint cooperate to perform the inflation action; then the heat sealing action of the heat sealing component is performed, and finally the cutting action of the cutting component is performed; Step five, the transfer process, transfers the box to the discharging mechanism through the transfer mechanism.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. First, place the box on the feeding mechanism, which moves the box to the sorting mechanism. The spacing between two adjacent boxes on the sorting mechanism is adjusted by the sorting mechanism. The box is then moved from the sorting mechanism to the packaging mechanism by the transfer mechanism. The packaging mechanism packages the box. Finally, the box is moved from the packaging mechanism to the discharging mechanism by the transfer mechanism. The discharging mechanism outputs the packaged box, completing the packaging of the box. The feeding mechanism, the sorting mechanism, the transportation mechanism, the packaging mechanism and the discharging mechanism are used to realize automatic packaging of the box, realize the automation of the box packaging process, and improve the efficiency of box packaging. 2. The upper die locking assembly will lock / unlock the upper die assembly and the fixed plate, making the disassembly and assembly of the upper die assembly and the fixed plate more convenient and reducing the assembly time of the upper die assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application; Figure 2 It is a structural diagram highlighting the feeding mechanism and the material sorting mechanism; Figure 3 is an exploded view highlighting the first tensioning component; Figure 4 is along Figure 1 Sectional view along line AA; Figure 5 yes Figure 4 A magnified schematic diagram of part B; Figure 6 It is a schematic diagram highlighting the local structure of the circuit components; Figure 7 yes Figure 4 A magnified schematic diagram of part C; Figure 8yes Figure 4 An enlarged schematic diagram of part D in the middle; Fig. 9 It is a schematic diagram of the local structure highlighting the lifting component; Fig.10 is a side view of the packaging machine; Fig.11 is along Fig.10 Partial cross-sectional view along line EE; Fig.12 yes Fig.11 The enlarged schematic diagram of the middle F part; Fig.13 is along Fig.10 Partial cross-sectional view of the GG line; Fig.14 It is a schematic diagram highlighting the partial structure of the transfer mechanism; Fig.15 It is a partial cross-sectional view highlighting the film collection component; Fig.16 It is a partial exploded view highlighting the film collection component; Fig.17 yes Fig.14 Enlarged schematic diagram of part H in the middle.

[0028] Figure numerals: 1, workbench; 11, first vertical plate; 12, second vertical plate; 13, first accommodating cavity; 14, second accommodating cavity; 2, packaging mechanism; 21, fixing frame; 211, fixing plate; 2111, first fixing hole; 2112, first vent hole; 2113, stopper; 22, upper mold assembly; 221, upper mold plate; 2211, locking hole; 2212, second fixing hole; 2213, second vent hole; 222, upper mold column; 223, upper mold base; 2231, upper mold cavity; 2232, upper mold hole; 224, upper mold locking assembly; 225, fixing strip; 2251, fixing groove; 226, locking plate; 227, locking column; 228, locking cylinder; 23, lower mold assembly; 231, lower mold base ;2311, lower mold cavity;2312, lower mold hole;2313, support hole;2314, slot;2315, inflation channel;2316, exhaust channel;232, support piece;2321, support plate;2322, support bar;2323, support column;233, roller;234, support rack;24, lifting assembly;241, support rack;2411, support seat;2412, support plate;242, support block;243, lifting rod;2431, inflation groove;2432, inflation joint;2433, inflation ring;2434, installation joint;244, lifting plate;2441, perforation;2442, round rod;2443, exhaust joint;2444, exhaust pipe;245, bottom plate;2451 , mounting slot; 2452, mounting hole; 2453, storage slot; 2454, locking block; 2455, jack; 246, first connecting rod; 2461, linkage rod; 247, second connecting rod; 248, lifting motor; 249, rodless cylinder; 2491, push rod; 25, film-laying assembly; 251, first operating panel; 252, film-laying roller; 253, film-laying motor; 26, film-collecting assembly; 261, second operating panel; 262, film-collecting roller; 263, film-collecting rod; 264, film-collecting motor; 2641, motor housing; 2642, output tube; 27, circuit assembly; 271, electrical fixed joint; 272, electrical movable joint; 273, vertical displacement assembly; 2731, horizontal plate; 2732, vertical rod ;2733, horizontal block;27331, punching hole;27332, air vent;2734, vertical cylinder;2735, vertical spring;28, air circuit assembly;281, air circuit fixed joint;282, air circuit movable joint;29, vacuum assembly;291, vacuum tube;292, vacuum joint;3, feeding mechanism;31, feeding rack;311, first mounting seat;312, first mounting rod;313, first mounting plate;32, first active roller;33, first driven roller;34, first conveyor belt;35, first tensioning assembly;351, rotating block;3511, directional groove;352, rotating shaft;3521, groove;3522, directional block;353, eccentric roller;354, sleeve;355, locking bolt;36. First transport motor; 4. Material sorting mechanism; 41. Material sorting rack; 411. Second mounting seat; 412. Second mounting rod; 413. Second mounting plate; 42. Second active roller; 43. Second driven roller; 44. Second conveyor belt; 45. Second tensioning assembly; 46. Second transport motor; 47. Control assembly; 471. Longitudinal rod; 472. Cross rod; 473. Detection sensor; 474. Auxiliary sensor; 5. Discharging mechanism; 6. Transfer mechanism; 61. Clamping plate; 62. Clamping strip; 63. First displacement assembly; 631. First guide rod; 632. Transfer block; 633. Second guide rod; 634. First transfer plate; 635. First vertical seat; 6351 , driving wheel; 636, second vertical seat; 6361, driven wheel; 637, transfer conveyor belt; 638, first transfer motor; 64, second displacement assembly; 641, second transfer plate; 642, transfer bar; 643, hinge rod; 644, second transfer motor; 7, transmission assembly; 71, operating shell; 711, operating slot; 712, positioning slot; 72, operating cover; 721, limiting ring slot; 73, driving disk; 731, positioning hole; 732, limiting slot; 74, driven disk; 75, driving rod; 76, operating disk; 761, operating hole; 77, operating spring; 78, adjustment assembly; 781, adjustment tube; 782, locking nut; 783, limiting ring block. ; DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-17 This application is described in further detail.

[0030] This embodiment discloses a modified atmosphere packaging machine and a packaging process thereof. Figure 1 A modified atmosphere packaging machine comprises a workbench 1 on which a packaging mechanism 2, a feeding mechanism 3, a material sorting mechanism 4, a discharging mechanism 5 and a transfer mechanism 6 are arranged.

[0031] Reference Figure 1 The workbench 1 is provided with a first vertical plate 11 and a second vertical plate 12, which are distributed along the length direction of the workbench 1. The first vertical plate 11 and the second vertical plate 12 are parallel to each other. The packaging mechanism 2 is provided between the first vertical plate 11 and the second vertical plate 12.

[0032] Reference Figure 1 The feeding mechanism 3 is located on a side of the first vertical plate 11 away from the second vertical plate 12 , and the feeding mechanism 3 is used to transport the boxes to the packaging mechanism 2 .

[0033] Reference Figure 2 and Figure 3 The feeding mechanism 3 includes a feeding frame 31, a first active roller 32, a first driven roller 33, a first conveyor belt 34, a first tensioning assembly 35 and a first transport motor 36.

[0034] Reference Figure 1 and Figure 2 The feed rack 31 is arranged on the workbench 1. The feed rack 31 includes a first mounting seat 311, a first mounting rod 312 and a first mounting plate 313. The first mounting seat 311 is fixedly connected to the workbench 1.

[0035] Reference Figure 1 and Figure 2 There are two first mounting rods 312, and the two first mounting rods 312 are fixedly connected to one end of the first mounting plate 313 along the width direction of the workbench 1. There are two first mounting plates 313, and the two first mounting plates 313 are parallel to each other. Each first mounting plate 313 is penetrated by two first mounting rods 312.

[0036] Reference Figure 2 and Figure 3 The first active roller 32 is rotatably connected between the two first mounting plates 313. The first transport motor 36 is fixedly connected to a side of the first mounting seat 311 away from the first mounting plate 313, and the first transport motor 36 is a stepping motor.

[0037] Reference Figure 2 Two first driven rollers 33 are provided, and the heights of all first driven rollers 33 are higher than the height of the first active roller 32. The first conveyor belt 34 is sleeved outside the first active roller 32 and the first driven roller 33.

[0038] Reference Figure 2 and Figure 3 The first tensioning assembly 35 is provided with two groups, and the first active roller 32 is located between the two first tensioning assemblies 35. The first tensioning assembly 35 is used to tension the first conveyor belt 34.

[0039] Reference Figure 2 and Figure 3 The first tensioning assembly 35 includes a rotating block 351, a rotating shaft 352, an eccentric roller 353, a sleeve 354 and a locking bolt 355. The rotating shaft 352 is rotatably connected to the first mounting seat 311. An orientation groove 3511 is provided on the outer circumferential surface of the rotating block 351.

[0040] Reference Figure 3 The rotating block 351 is arranged on the side of the first mounting seat 311 away from the first transport motor 36, and the rotating shaft 352 is provided with a groove 3521, and the groove 3521 can be inserted into the rotating block 351. An orientation block 3522 is fixedly connected to the inner circumference of the groove 3521, and the orientation block 3522 cooperates with the orientation groove 3511 to make the rotating shaft 352 and the rotating block 351 rotate synchronously.

[0041] Reference Figure 2 and Figure 3, the eccentric roller 353 is arranged on the side of the rotating shaft 352 away from the first mounting seat 311. The sleeve 354 is sleeved outside the eccentric roller 353. The locking bolt 355 passes through the rotating block 351 and is threadedly connected with the rotating shaft 352. The locking bolt 355 is driven to rotate, so that the rotating shaft 352 and the rotating block 351 are close to each other, and then the rotating shaft 352 and the rotating block 351 clamp the first mounting seat 311, and finally the rotating shaft 352 and the rotating block 351 are not easy to rotate. At this time, the staff cannot adjust the tightness of the first conveyor belt 34; loosening the locking bolt 355 can drive the rotating shaft 352 and the eccentric roller 353 to rotate, and adjust the tightness of the first conveyor belt 34.

[0042] Reference Figure 1 and Figure 2 The material sorting mechanism 4 is arranged between the feeding mechanism 3 and the packaging mechanism 2. The material sorting mechanism 4 is used to adjust the distance between two adjacent boxes, so that the subsequent transport mechanism 6 can transport the boxes.

[0043] Reference Figure 2 The material sorting mechanism 4 includes a material sorting frame 41, a second active roller 42, a second driven roller 43, a second conveyor belt 44, a second tensioning assembly 45, a second transport motor 46 and a control assembly 47.

[0044] Reference Figure 1 and Figure 2 The material sorting rack 41 is arranged on the workbench 1. The material sorting rack 41 includes a second mounting seat 411, a second mounting rod 412 and a second mounting plate 413. The second mounting seat 411 is fixedly connected to the workbench 1.

[0045] Reference Figure 1 and Figure 2 There are two second mounting rods 412, and the two second mounting rods 412 are fixedly connected to one side of the second mounting plate 413 along the width direction of the workbench 1. There are two second mounting plates 413, and the two second mounting plates 413 are parallel to each other. Each second mounting plate 413 is penetrated by two second mounting rods 412.

[0046] Reference Figure 2 The second active roller 42 is rotatably connected between the two second mounting plates 413. The second transport motor 46 is fixedly connected to a side of the second mounting seat 411 away from the second mounting plate 413, and the second transport motor 46 is a stepping motor.

[0047] Reference Figure 2 There are four second driven rollers 43 , and the heights of all the second driven rollers 43 are higher than the heights of the second active rollers 42 . The second conveyor belt 44 is sleeved outside the second active rollers 42 and the second driven rollers 43 .

[0048] Reference Figure 2The second tensioning assembly 45 is used to tension the second conveyor belt 44. Two sets of the second tensioning assembly 45 are provided, and the second active roller 42 is located between the two second tensioning assemblies 45. The second tensioning assembly 45 has the same structure as the first tensioning assembly 35, except that the first tensioning assembly 35 is used to tension the first conveyor belt 34, and the second tensioning assembly 45 is used to tension the second conveyor belt 44.

[0049] Reference Figure 1 The control component 47 is arranged on the workbench 1, and the control component 47 is used to control the opening and closing of the second transport motor 46. The control component 47 includes a longitudinal rod 471, a cross rod 472, a detection sensor 473 and a controller.

[0050] Reference Figure 1 and Figure 2 , the longitudinal rod 471 is fixedly connected to the workbench 1. The cross bar 472 is vertically slidably arranged on the longitudinal rod 471, and the position of the cross bar 472 is fixed by a fastener. The cross bar 472 is located above the first conveyor belt 34. The length direction of the cross bar 472 is consistent with the length direction of the workbench 1.

[0051] Reference Figure 1 and Figure 2 The detection sensor 473 slides horizontally on the crossbar 472, and the detection sensor 473 is fixed in position by a fastener. The detection sensor 473 adopts a photoelectric sensor. The detection sensor 473 is electrically connected to the controller, and the controller is electrically connected to the second transport motor 46. An operator is provided in the controller.

[0052] Reference Figure 1 and Figure 2 When the boxes are transported on the first conveyor belt 34 toward the packaging mechanism 2, the detection sensor 473 is used to identify the exact position of the boxes and count the number of boxes. The detection sensor 473 transmits a signal to the controller, and the controller calculates the time when the boxes arrive at the second conveyor belt 44 based on the running speed of the first conveyor belt 34 and the distance between the detection sensor 473 and the second conveyor belt 44.

[0053] The second conveyor belt 44 is made to move intermittently by controlling the second conveyor motor 46 to turn on and off. When the first conveyor belt 34 transfers a box to the second conveyor belt 44, the second conveyor belt 44 moves the box on it toward the packaging mechanism 2 by a set distance, which is equal to the arrangement spacing inside the mold, until the second conveyor belt 44 packs the required number of boxes by the packaging mechanism 2, so that the subsequent transfer mechanism 6 can transfer the boxes on the second conveyor belt 44 to the packaging mechanism 2.

[0054] In other embodiments, an auxiliary sensor 474 is added to the cross bar 472. The auxiliary sensor 474 slides horizontally on the cross bar 472, and the position of the auxiliary sensor 474 is fixed by fasteners.

[0055] Reference Figure 1 The auxiliary sensor 474 slides horizontally on the crossbar 472, and the auxiliary sensor 474 is located on the side of the detection sensor 473 away from the packaging mechanism 2. The auxiliary sensor 474 is fixed in position by a locking member. The auxiliary sensor 474 adopts a photoelectric sensor. The auxiliary sensor 474 is electrically connected to the controller.

[0056] Reference Figure 1 and Figure 2 The auxiliary sensor 474 can detect the box position on the first conveyor belt 34 in advance. By comparing the data detected by the auxiliary sensor 474 with the data detected by the detection sensor 473, the accuracy of the detection sensor 473 can be improved, that is, the accuracy of the box position adjustment by the material sorting mechanism 4 can be improved.

[0057] Reference Figure 1 and Figure 2 The discharging mechanism 5 is located at a side of the packaging mechanism 2 away from the feeding mechanism 3, and the discharging mechanism 5 is used to move the box out of the packaging mechanism 2. The structure of the discharging mechanism 5 is the same as that of the feeding mechanism 3, and the discharging mechanism 5 is used to move the box thereon away from the packaging mechanism 2.

[0058] Reference Figure 4 The packaging mechanism 2 includes a fixing frame 21, a fixing plate 211, an upper mold assembly 22, a lower mold assembly 23, a lifting assembly 24, a heat sealing assembly, a cutting assembly, a film placing assembly 25 and a film collecting assembly 26.

[0059] Reference Figure 4 and Figure 5 One end of the fixing frame 21 is fixedly connected to the first vertical plate 11, and the other end of the fixing frame 21 is fixedly connected to the second vertical plate 12. The fixing plate 211 is fixedly connected to the lower part of the fixing frame 21.

[0060] Reference Figure 4 and Figure 5 The upper mold assembly 22 includes an upper mold plate 221, an upper mold column 222 and an upper mold base 223. The upper mold base 223 is located below the upper mold plate 221, and the length direction of the upper mold base 223 is consistent with the length direction of the workbench 1. A plurality of upper mold columns 222 are provided, and all are located between the upper mold base 223 and the upper mold plate 221. One end of the upper mold column 222 is fixedly connected to the upper mold plate 221, and the other end of the upper mold column 222 is fixedly connected to the upper mold base 223.

[0061] Reference Figure 4 and Figure 5An upper die cavity 2231 is provided in the upper die seat 223. Six upper die holes 2232 are provided on the lower end surface of the upper die seat 223. The six upper die holes 2232 are distributed in an array along the length direction of the upper die seat 223. The six upper die holes 2232 are all connected to the upper die cavity 2231.

[0062] Reference Figure 4 and Figure 5 The heat sealing assembly is arranged in the upper die seat 223, and the heat sealing assembly is used to heat seal the box and the packaging film. The heat sealing assembly includes a heat sealing plate, and the heat sealing plate is located directly above the upper die hole 2232. The heat sealing plate can be heated by powering on, and the packaging film and the box are heat-sealed.

[0063] Reference Figure 4 and Figure 5 The cutting assembly is arranged in the upper die seat 223, and the cutting assembly is used to cut the packaging film. The cutting assembly includes a cutter, and the cutter surrounds the heat sealing plate. After the heat sealing plate heat-seals the packaging film and the box, the cutter cuts the packaging film.

[0064] Reference Figure 5 An upper die locking assembly 224 is provided between the fixing plate 211 and the upper die plate 221 to connect the two. The upper die locking assembly 224 includes a fixing bar 225, a locking plate 226, a locking column 227 and a locking cylinder 228.

[0065] Reference Figure 5 , two fixing bars 225 are provided. The two fixing bars 225 are parallel to each other and are fixedly connected to the lower end surface of the fixing plate 211. In this embodiment, the length direction of the two fixing bars 225 is consistent with the width direction of the workbench 1. The end surfaces of the two fixing bars 225 close to each other are each provided with a fixing groove 2251, and the fixing groove 2251 penetrates the fixing bar 225 along the length direction of the fixing bar 225. The fixing groove 2251 can be inserted into the upper template 221.

[0066] Reference Figure 5 The locking plate 226 is disposed below the fixing strip 225. The locking column 227 is fixedly connected to the locking plate 226, and the locking column 227 extends toward the fixing plate 211. The lower end surface of the upper template 221 is provided with a locking hole 2211, and the locking hole 2211 can be inserted into the locking column 227.

[0067] Reference Figure 5 The cylinder body of the locking cylinder 228 is fixedly connected to the upper end surface of the fixing plate 211. The piston rod of the locking cylinder 228 passes through the fixing plate 211 and the fixing strip 225 and is fixedly connected to the locking plate 226.

[0068] Reference Figure 5 and Figure 6The lower end surface of the fixing plate 211 is fixedly connected with a stopper 2113, and the stopper 2113 is located on the path of the fixing plate 211 moving along the length direction of the fixing strip 225. When the upper template 221 abuts against the stopper 2113, the locking hole 2211 is aligned with the locking column 227.

[0069] In other embodiments, as long as the upper template 221 can be slid into the fixing grooves 2251 of the two fixing bars 225 , the length direction of the two fixing bars 225 can also be consistent with the length direction of the workbench 1 .

[0070] Reference Figure 4 and Figure 7 The upper die base 223 is provided with a circuit assembly 27, which is used to energize the heat sealing assembly. The circuit assembly 27 includes an electrical fixed joint 271, an electrical movable joint 272, and a vertical displacement assembly 273. The electrical fixed joint 271 is provided on the upper die base 223, and the electrical fixed joint 271 is electrically connected to the heat sealing assembly.

[0071] Reference Figure 6 and Figure 7 The vertical displacement assembly 273 is disposed on the fixed plate 211 and is used to drive the electrical movable joint 272 to rise and fall. The vertical displacement assembly 273 includes a horizontal plate 2731, a vertical rod 2732, a horizontal block 2733 and a vertical cylinder 2734.

[0072] Reference Figure 6 and Figure 7 Four vertical rods 2732 are provided, the lower ends of the four vertical rods 2732 are connected to the top of the fixed plate 211, and the upper ends of the four vertical rods 2732 are connected to the bottom of the horizontal plate 2731.

[0073] Reference Figure 6 and Figure 7 The horizontal block 2733 is located between the horizontal plate 2731 and the fixed plate 211. The horizontal block 2733 is provided with a punching hole 27331, and the punching hole 27331 can allow the vertical rod 2732 to pass through. The vertical rod 2732 is provided with a vertical spring 2735, and the vertical spring 2735 is in a compressed state. One end of the vertical spring 2735 abuts against the horizontal plate 2731, and the other end of the vertical spring 2735 abuts against the horizontal block 2733.

[0074] Reference Figure 7 The fixing plate 211 is provided with a first fixing hole 2111. The upper template 221 is provided with a second fixing hole 2212, and the second fixing hole 2212 is aligned with the first fixing hole 2111. The electrical active connector 272 is disposed on the horizontal block 2733, and the electrical active connector 272 is inserted into the first fixing hole 2111 and the second fixing hole 2212.

[0075] Reference Figure 6 and Figure 7 , the cylinder body of the vertical cylinder 2734 is fixedly connected to the upper end surface of the horizontal plate 2731. The piston rod of the vertical cylinder 2734 passes through the horizontal plate 2731 and is fixedly connected to the horizontal block 2733. The vertical cylinder 2734 drives the horizontal block 2733 and the electrical movable joint 272 to descend, so that the electrical movable joint 272 is plugged and matched with the electrical fixed joint 271; conversely, the vertical cylinder 2734 drives the horizontal block 2733 and the electrical movable joint 272 to rise, so that the electrical movable joint 272 is separated from the electrical fixed joint 271.

[0076] Reference Figure 6 and Figure 7 The upper mold base 223 is provided with an air circuit assembly 28 and a vacuum assembly 29. The air circuit assembly 28 is used to inflate the upper mold assembly 22. The inflated gas is nitrogen. The air circuit assembly 28 includes an air circuit fixed joint 281 and an air circuit movable joint 282.

[0077] Reference Figure 6 and Figure 7 The lower end surface of the horizontal block 2733 is provided with an air hole 27332, and the air circuit movable joint 282 is inserted into the air hole 27332 from the upper side of the horizontal block 2733. The air circuit fixed joint 281 is connected to the upper mold base 223, and the air circuit fixed joint 281 is communicated with the interior of the upper mold base 223. The upper end of the air circuit fixed joint 281 is inserted into the air hole 27332. The end of the air circuit fixed joint 281 away from the horizontal block 2733 is connected to the inflation device.

[0078] Reference Figure 6 and Figure 7 , the vacuum assembly 29 is used to evacuate the upper mold assembly 22. The air circuit assembly 28 includes a vacuum tube 291 and a vacuum connector 292. A first vent hole 2112 is provided on the lower end surface of the fixed plate 211, and a second vent hole 2213 is provided on the upper mold plate 221. When the upper mold plate 221 abuts against the fixed plate 211, the second vent hole 2213 is connected to the first vent hole 2112. The vacuum connector 292 is inserted into the first vent hole 2112 from above the horizontal block 2733. One end of the vacuum connector 292 away from the horizontal block 2733 is connected to the exhaust device. The vacuum tube 291 is connected to the upper mold base 223, the vacuum tube 291 is connected to the inside of the upper mold base 223, and the upper end of the vacuum tube 291 is inserted into the second vent hole 2213.

[0079] Reference Figure 8 and Fig. 9The lower die assembly 23 includes a lower die base 231 and a support 232. The length direction of the lower die base 231 is consistent with the length direction of the workbench 1. A storage hole is provided on the lower end surface of the lower die base 231, and a roller 233 is rotatably connected in the storage hole. Two support racks 234 are fixedly connected to the workbench 1. In the mold opening state, the roller 233 on the lower die base 231 can abut against the upper end surface of the support rack 234.

[0080] Reference Figure 8 and Fig. 9 A lower die cavity 2311 is defined in the lower die base 231 , and six lower die holes 2312 are defined on the upper end surface of the lower die base 231 . The six lower die holes 2312 are distributed in an array along the length direction of the lower die base 231 , and all of the six lower die holes 2312 are connected to the lower die cavity 2311 .

[0081] Reference Figure 8 and Fig. 9 , the supporting member 232 is arranged inside the lower die base 231. The supporting member 232 includes a supporting plate 2321, a supporting strip 2322 and a supporting column 2323. The length direction of the supporting strip 2322 is consistent with the length of the lower die base 231. There are six supporting plates 2321, and they are all fixedly connected to the upper end surface of the supporting strip 2322. The six supporting plates 2321 are each aligned with a lower die hole 2312. The supporting column 2323 is connected to the supporting strip 2322, and the lower inner wall of the lower die cavity 2311 is provided with a supporting hole 2313, and the supporting hole 2313 can be inserted into the supporting column 2323. When the supporting member 232 rises, the supporting plate 2321 can be inserted into the lower die hole 2312.

[0082] Reference Figure 8 and Fig.10 The lifting assembly 24 is disposed on the workbench 1, and is used to drive the lower mold base 231 to move up and down, so as to achieve mold closing / opening of the lower mold assembly 23 and the upper mold assembly 22. The lifting assembly 24 includes a support frame 241, a support block 242, a lifting rod 243, a lifting plate 244, a bottom plate 245, a first connecting rod 246, a second connecting rod 247 and a lifting motor 248.

[0083] Reference Fig. 9 The support frame 241 is fixedly connected to the lower end surface of the workbench 1. The support frame 241 includes a support seat 2411 and two support plates 2412, and the two support plates 2412 are parallel to each other. The support seat 2411 is arranged between the two support plates 2412, and the support seat 2411 and the support plates 2412 are fixedly connected.

[0084] Reference Fig. 9 There are two first connecting rods 246, and the first connecting rods 246 are rotatably connected to one end of the support plate 2412 toward the support seat 2411. A linkage rod 2461 is provided between the two first connecting rods 246 to connect the two.

[0085] Reference Fig. 9 The housing of the lifting motor 248 is fixedly connected to the end surface of the support plate 2412 away from the support seat 2411, and the output shaft of the lifting motor 248 is fixedly connected to the first connecting rod 246. The lifting motor 248 drives the first connecting rod 246 to reciprocate. In this embodiment, the lifting motor 248 can be a stepper motor or a servo motor.

[0086] Reference Fig. 9 The lifting plate 244 is arranged on the side of the support frame 241 away from the workbench 1. The upper end surface of the lifting plate 244 is provided with two through holes 2441. Round rods 2442 are arranged in the two through holes 2441. The second connecting rod 247 is sleeved outside the round rod 2442, and the second connecting rod 247 can rotate around the axis of the round rod 2442. One end of the second connecting rod 247 away from the round rod 2442 is rotatably connected to the first connecting rod 246.

[0087] Reference Fig. 9 , four support blocks 242 and four lifting rods 243 are provided. The end surface of the support plate 2412 away from the support seat 2411 is fixedly connected to the two support blocks 242.

[0088] Reference Fig. 9 , four lifting rods 243 are connected to the top of the lifting plate 244. The upper end of each lifting rod 243 passes through the support block 242 and the workbench 1. The lifting rod 243 can move in the vertical direction.

[0089] Reference Fig.11 and Fig.12 The upper end surface of the lifting rod 243 is provided with an air filling groove 2431. The outer circumferential surface of the lifting rod 243 is provided with an air filling hole, which is connected to the air filling groove 2431. The air filling hole is installed with an air filling joint 2432, which can be connected to an air filling device, and the air filling device is nitrogen for filling the lower mold base 231. The upper end surface of the lifting rod 243 is fixedly connected with an air filling ring 2433.

[0090] Reference Fig.11 and Fig.12 The bottom plate 245 is located above the workbench 1, and the bottom of the bottom plate 245 abuts against the top of the lifting rod 243. The upper end surface of the bottom plate 245 is provided with a mounting groove 2451, and the bottom wall of the mounting groove 2451 is provided with a mounting hole 2452. The mounting hole 2452 can be inserted into the inflatable ring 2433. The mounting groove 2451 is provided with a mounting joint 2434, and the mounting joint 2434 can be inserted into the mounting hole 2452. In this embodiment, the mounting joint 2434 is threadedly connected to the inflatable ring 2433.

[0091] Reference Fig.12A storage slot 2453 is provided above the bottom plate 245, and a locking block 2454 is provided in the storage slot 2453. A slot 2314 is provided on the lower end surface of the lower die base 231, and the locking block 2454 can be inserted into the slot 2314.

[0092] Reference Fig.12 The lower end surface of the lower die base 231 is provided with an air charging channel 2315, which is communicated with the lower die hole 2312. The air charging channel 2315 is aligned with the mounting groove 2451. When the locking block 2454 is inserted into the slot 2314, the bottom plate 245 abuts against the lower end surface of the lower die base 231, and the air charging channel 2315 is communicated with the mounting groove 2451, so that the air charging device can perform the air charging process on the lower die base 231.

[0093] Reference Fig.13 A suction connector 2443 is fixedly connected to the top of the lifting plate 244, and the suction connector 2443 can be connected to the suction device. A suction pipe 2444 is fixedly connected to the top of the suction connector 2443, and the upper end of the suction pipe 2444 passes through the workbench 1. A plug hole 2455 is provided on the lower end surface of the bottom plate 245, and the plug hole 2455 can be inserted into the suction pipe 2444.

[0094] Reference Fig.13 The lower end surface of the lower mold base 231 is provided with an air extraction channel 2316, which is connected to the lower mold cavity 2311. The air extraction channel 2316 is aligned with the plug hole 2455. When the bottom plate 245 abuts against the lower end surface of the lower mold base 231, the air extraction channel 2316 is connected to the plug hole 2455, so that the air extraction device can perform an air extraction process on the lower mold base 231.

[0095] Reference Figure 8 and Fig.10 , the end surface of the support block 242 away from the support plate 2412 is fixedly connected with a rodless cylinder 249, and the slider on the rodless cylinder 249 can move in the vertical direction. A push rod 2491 is fixedly connected to the slider. The upper end of the push rod 2491 passes through the workbench 1 and the bottom plate 245. When the locking block 2454 is inserted into the slot 2314, the bottom plate 245 abuts against the lower end surface of the lower die seat 231, and the push rod 2491 is aligned with the support column 2323. As the rodless cylinder 249 drives the push rod 2491 to rise, the push rod 2491 can abut against the support column 2323, and the support member 232 can be driven to rise.

[0096] Reference Fig.14 The film placing assembly 25 is arranged on the side of the first vertical plate 11 away from the second vertical plate 12, and is used to place the packaging film. The film placing assembly 25 includes a first operating plate 251, a film placing roller 252 and a film placing motor 253.

[0097] Reference Fig.14The first operating plate 251 is fixedly connected to one end of the first vertical plate 11 away from the first vertical plate 11. The film placing roller 252 is rotatably connected to one side of the first operating plate 251 along the width direction of the workbench 1. The housing of the film placing motor 253 is fixedly connected to one end of the first operating plate 251 away from the film placing roller 252, and the output shaft of the film placing motor 253 is fixedly connected to the film placing roller 252.

[0098] Reference Fig.14 and Fig.15 The film collection assembly 26 is disposed on a side of the second vertical plate 12 away from the first vertical plate 11 , and is used to roll up the packaging film. The film collection assembly 26 includes a second operating plate 261 , a film collection roller 262 , a film collection rod 263 , a film collection motor 264 and a transmission assembly 7 .

[0099] Reference Fig.14 and Fig.15 The second operating plate 261 is fixedly connected to the end of the second vertical plate 12 away from the first vertical plate 11. The film collecting rod 263 is fixedly connected to the end surface of the film collecting roller 262 facing the second operating plate 261. The film collecting rod 263 passes through the second operating plate 261 and extends to the side of the second operating plate 261 away from the film collecting roller 262.

[0100] Reference Fig.15 and Fig.16 The film collecting motor 264 includes a motor housing 2641 and an output tube 2642. The motor housing 2641 is fixedly connected to an end of the second operating plate 261 away from the film collecting roller 262. The output tube 2642 is rotatably connected to the motor housing 2641, and the output tube 2642 is sleeved outside the film collecting rod 263.

[0101] Reference Fig.15 and Fig.16 The transmission assembly 7 is located at a side of the motor housing 2641 away from the second operating plate 261 , and the film collecting motor 264 drives the film collecting roller 262 to rotate through the transmission assembly 7 .

[0102] Reference Fig.15 and Fig.16 The transmission assembly 7 includes an operating housing 71 , an operating cover 72 , an active disk 73 , a driven disk 74 , an active rod 75 , an operating disk 76 and an operating spring 77 .

[0103] Reference Fig.15 and Fig.16 The operating shell 71 and the operating cover 72 are both sleeved outside the film collecting rod 263, and one end of the operating shell 71 is fixedly connected to the output tube 2642. An operating slot 711 is provided at one end of the operating shell 71 away from the output tube 2642. The operating cover 72 is arranged on one side of the operating shell 71 away from the output tube 2642, and is used to block the operating slot 711.

[0104] Reference Fig.15 and Fig.16 The active disk 73, the driven disk 74, the operating disk 76 and the operating spring 77 are all arranged in the operating groove 711. The active disk 73, the driven disk 74 and the operating disk 76 are all sleeved outside the film collecting rod 263. The driven disk 74 is located on the side of the active disk 73 facing the operating cover 72. The driven disk 74 and the output tube 2642 are connected by a key. The end faces of the active disk 73 and the driven disk 74 away from the output tube 2642 are abutted, so that the two adopt friction transmission.

[0105] Reference Fig.15 and Fig.16 The operating disk 76 is located on the side of the active disk 73 facing the driven disk 74. An operating hole 761 is provided on the operating disk 76, and the operating hole 761 can be passed through by the film collecting rod 263.

[0106] Reference Fig.15 and Fig.16 A plurality of active rods 75 are provided, and the plurality of active rods 75 are arranged in an array around the axis of the film collecting rod 263. Positioning grooves 712 are provided on the bottom wall of the operating groove 711 and the operating cover 72. One end of the active rod 75 is inserted into the positioning groove 712 on the operating housing 71, and the other end of the active rod 75 is inserted into the positioning groove 712 on the operating cover 72.

[0107] Reference Fig.15 and Fig.16 The end surfaces of the active disk 73 and the operating disk 76 that are close to each other are both provided with positioning holes 731, and the positioning holes 731 can allow the active rod 75 to pass through.

[0108] Reference Fig.15 and Fig.16 The operating spring 77 is arranged between the active disk 73 and the operating disk 76, and a limiting groove 732 is provided on the side where the active disk 73 and the operating disk 76 are close to each other. The operating spring 77 is in a compressed state. One end of the operating spring 77 is inserted into the limiting groove 732 on the active disk 73, and the other end of the operating spring 77 is inserted into the limiting groove 732 on the operating disk 76.

[0109] Reference Fig.15 and Fig.16 The operating cover 72 is provided with an adjustment assembly 78, which is used to adjust the friction between the active disk 73 and the driven disk 74. The adjustment assembly 78 includes an adjustment tube 781 and a locking nut 782.

[0110] Reference Fig.15 and Fig.16The adjusting tube 781 is sleeved outside the film collecting rod 263. One end of the adjusting tube 781 is threadedly connected to the operating hole 761, and the other end of the adjusting tube 781 passes through the operating cover 72 and extends to the side of the operating cover 72 away from the operating housing 71. The adjusting tube 781 is rotatably connected to the operating cover 72.

[0111] Reference Fig.15 and Fig.16 The outer circumferential surface of the regulating tube 781 is provided with a limiting ring block 783. The operating cover 72 is provided with a limiting ring groove 721 on one side facing the operating housing 71. The limiting ring block 783 is inserted into the limiting ring groove 721.

[0112] Reference Fig.15 and Fig.16 The locking nut 782 is threadedly connected to the outside of the adjustment tube 781 , and the locking nut 782 is located on a side of the operating cover 72 away from the operating shell 71 .

[0113] Reference Fig.14 The transfer mechanism 6 is used to move the box from the material sorting mechanism 4 to the lower mold assembly 23, or to move the box from the lower mold assembly 23 to the material discharging mechanism 5. The transfer mechanism 6 includes a clamping plate 61, a clamping strip 62, a first displacement assembly 63 and a second displacement assembly 64.

[0114] Reference Fig.14 The first displacement assembly 63 is used to drive the clamping plate 61 to move along the length direction of the workbench 1. The first displacement assembly 63 includes a first guide rod 631, a transfer block 632, a second guide rod 633, a first transfer plate 634, a first vertical seat 635, a second vertical seat 636, a driving wheel 6351, a driven wheel 6361, a transfer conveyor belt 637 and a first transfer motor 638.

[0115] Reference Fig.14 Two first guide rods 631 are provided, and the two first guide rods 631 are parallel to each other. One end of the first guide rod 631 is connected to the first vertical plate 11 , and the other end of the first guide rod 631 is connected to the second vertical plate 12 .

[0116] Reference Fig.14 The transfer block 632 is provided with two, and each of the two transfer blocks 632 is assembled on a first guide rod 631. The transfer block 632 can move along the length direction of the first guide rod 631.

[0117] Reference Fig.14 Two second guide rods 633 are provided, one end of the second guide rod 633 is connected to the transfer block 632, and the other end of the second guide rod 633 is connected to another transfer block 632. A guide hole is provided on the first transfer plate 634, and the guide hole can allow the second guide rod 633 to pass through. The first transfer plate 634 can move along the length direction of the second guide rod 633.

[0118] Reference Fig.14 The first horizontal vertical plate 11 has a first accommodating cavity 13 formed therein. The first vertical seat 635 is fixedly connected to the inner wall of the first accommodating cavity 13 near the upper mold assembly 22. The second vertical plate 12 has a second accommodating cavity 14 formed therein. The second vertical seat 636 is fixedly connected to the inner wall of the second accommodating cavity 14 near the upper mold assembly 22.

[0119] Reference Fig.14 The driving wheel 6351 is rotatably connected to the first vertical seat 635. The housing of the first transport motor 638 is remotely connected to the first vertical seat 635, and the output shaft of the first transport motor 638 is fixedly connected to the driving wheel 6351. The first transport motor 638 is a stepping motor.

[0120] Reference Fig.14 The driven wheel 6361 is rotatably connected to the second vertical seat 636. The transfer conveyor belt 637 is sleeved outside the driving wheel 6351 and the driven wheel 6361. The first transfer plate 634 is assembled on the transfer conveyor belt 637, and the first transfer motor 638 drives the transfer conveyor belt 637 to move, which can drive the first transfer plate 634 to move together.

[0121] Reference Fig.14 and Fig.17 The second displacement assembly 64 is disposed on the first transfer plate 634 and is used to drive the clamping plate 61 to move along the width direction of the workbench 1. The second displacement assembly 64 includes a second transfer plate 641, a rotating bar 642, a hinge rod 643, and a second transfer motor 644.

[0122] Reference Fig.17 The rotating bar 642 is rotatably connected to the lower part of the first transfer plate 634. The housing of the second transfer motor 644 is fixedly connected to the upper part of the first transfer plate 634, and the output shaft of the second transfer motor 644 is fixedly connected to the rotating bar 642. The second transfer motor 644 is a stepping motor.

[0123] Reference Fig.17 Two second transfer plates 641 are provided, and the second transfer plates 641 are assembled on the second guide rods 633 and can slide along the length direction of the second guide rods 633. The first transfer plate 634 is located between the two second transfer plates 641.

[0124] Reference Fig.17 One end of the hinged rod 643 is hinged to the bottom of the rotating bar 642 , and the other end of the hinged rod 643 is hinged to the bottom of the second transfer plate 641 .

[0125] Reference Fig.14Two clamping plates 61 are provided. Each clamping plate 61 is connected to the lower side of a second transfer plate 641. One clamping plate 61 is located on one side of the packaging mechanism 2 along the width direction of the workbench 1, and the other clamping plate 61 is located on the other side of the packaging mechanism 2 along the width direction of the workbench 1. The ends of the two clamping plates 61 that are close to each other are fixedly connected to the clamping strip 62.

[0126] A packaging process of a modified atmosphere packaging machine, using the packaging machine of this embodiment, comprises the following steps: Step 1: Loading process: placing the box on the feeding mechanism 3, and the feeding mechanism 3 transports the box to the material sorting mechanism 4; Step 2: material sorting process, the material sorting mechanism 4 adjusts the distance between adjacent boxes and transports the boxes to the packaging mechanism 2; Step 3, a transfer process, in which the box is transferred to the lower mold assembly 23 by the transfer mechanism 6; Step 4, packaging process, the lifting component 24 drives the lower mold component 23 and the box to rise, so that the lower mold component 23 and the upper mold component 22 are molded together, and then the vacuum component 29, the exhaust pipe 2444 and the exhaust joint 2443 cooperate to perform the exhaust action, and then the gas circuit component 28, the lifting rod 243 and the inflation joint 2432 cooperate to perform the inflation action; then the heat sealing action of the heat sealing component is performed, and finally the cutting action of the cutting component is performed; Step five, the transfer process, transfers the box to the discharging mechanism 5 through the transfer mechanism 6.

[0127] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0128] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present application should be included in the protection scope of the present application.

Claims

1. A modified atmosphere packaging machine, characterized in that: include: Workbench (1); Packaging mechanism (2): arranged on the workbench (1) and used for packaging boxes; A feeding mechanism (3) is arranged on the workbench (1) and is used to transport the boxes to be packaged toward the packaging mechanism (2); A material sorting mechanism (4): arranged on the workbench (1), located between the feeding mechanism (3) and the packaging mechanism (2), and used for adjusting the distance between two adjacent boxes; A discharging mechanism (5) is arranged on the workbench (1) and is used to transport the packaged boxes in a direction away from the packaging mechanism (2); The transfer mechanism (6) is arranged on the workbench (1) and is used to move boxes from the material sorting mechanism (4) to the packaging mechanism (2), and is also used to move the packaged boxes from the packaging mechanism (2) to the discharging mechanism (5).

2. A modified atmosphere packaging machine according to claim 1, characterized in that: The workbench (1) is provided with a first vertical plate (11) and a second vertical plate (12); the packaging mechanism (2) comprises a fixing frame (21) arranged between the first vertical plate (11) and the second vertical plate (12), a fixing plate (211) arranged below the fixing frame (21), an upper mold assembly (22) arranged below the fixing plate (211), a heat sealing assembly and a cutting assembly arranged in the upper mold assembly (22), an air path assembly (28) and a vacuum assembly (29) arranged on the upper mold assembly (22), a film placing assembly (25) arranged on the first vertical plate (11), A film collecting assembly (26) is arranged on the second vertical plate (12) and a lower mold assembly (23) and a lifting assembly (24) are arranged on the workbench (1). The lifting assembly (24) is used to drive the lower mold assembly (23) and the upper mold assembly (22) to close / open the mold. The film placing assembly (25) cooperates with the film collecting assembly (26) to make the packaging film move between the upper mold assembly (22) and the lower mold assembly (23). The heat sealing assembly is used to heat-seal the packaging film with the box. The cutting assembly is used to cut the packaging film. The vacuum assembly (29) is used to evacuate air. The air path assembly (28) is used to inflate air.

3. A modified atmosphere packaging machine according to claim 2, characterized in that: The upper mold assembly (22) comprises an upper mold plate (221), an upper mold locking assembly (224) connecting the upper mold plate (221) and the fixed plate (211) is arranged between the upper mold plate (221) and the fixed plate (211), the upper mold locking assembly (224) comprises two fixing bars (225) arranged below the fixed plate (211), a locking plate (226) arranged below the fixing bars (225), a locking column (227) arranged above the locking plate (226), and a locking cylinder (228) arranged above the fixed plate (211), a fixing groove (2251) is provided at one end of the two fixing bars (225) close to each other, the upper mold plate (221) is slidably arranged in the fixing groove (2251), a locking hole (2211) capable of being inserted with the locking column (227) is provided on the lower end surface of the upper mold plate (221), and the locking cylinder (228) is used to drive the locking plate (226) to rise and fall.

4. The modified atmosphere packaging machine according to claim 3, characterized in that: The upper mold assembly (22) comprises an upper mold base (223) arranged below the upper mold plate (221); a circuit assembly (27) is arranged above the upper mold base (223); the circuit assembly (27) comprises an electrical fixed joint (271) arranged above the upper mold base (223), an electrical movable joint (272) arranged on the fixed plate (211), and a vertical displacement assembly (273); the vertical displacement assembly (273) is used to drive the electrical movable joint (272) to engage or disengage with the electrical fixed joint (271); and the electrical fixed joint (271) is electrically connected to the heat sealing assembly.

5. The modified atmosphere packaging machine according to claim 4, characterized in that: The vertical displacement assembly (273) comprises a vertical rod (2732) arranged above the fixed plate (211), a horizontal plate (2731) arranged on the side of the vertical rod (2732) away from the fixed plate (211), a horizontal block (2733) arranged between the horizontal plate (2731) and the fixed plate (211), and a vertical cylinder (2734) arranged on the horizontal plate (2731), wherein the vertical cylinder (2734) is used to drive the horizontal block (2733) to rise and fall, the electrical movable joint (272) is arranged on the horizontal block (2733), the fixed plate (211) is provided with a first fixing hole (2111) capable of allowing the electrical movable joint (272) to pass through, and the upper template (221) is provided with a second fixing hole (2212) capable of allowing the electrical movable joint (272) to pass through.

6. The modified atmosphere packaging machine according to claim 2, characterized in that: The workbench (1) is provided with a support frame (234), the lower die assembly (23) comprises a lower die seat (231) placed on the support frame (234), and the lifting assembly (24) comprises a support frame (241) arranged below the workbench (1), a first connecting rod (246) rotatably connected to the support frame (241), a second connecting rod (247) rotatably connected to the first connecting rod (246), a lifting plate (244) located below the support frame (241), a lifting rod (243) arranged above the lifting plate (244), and a lifting rod (247) arranged above the support frame (241). The invention relates to a lifting motor (248) on a lower die base (231) and a bottom plate (245) arranged between the lower die base (231) and the workbench (1), the second connecting rod (247) is rotatably connected to the lifting plate (244), the lifting motor (248) is used to drive the first connecting rod (246) to rotate back and forth, the upper end of the lifting rod (243) is in contact with the bottom of the bottom plate (245), a locking block (2454) is arranged on the bottom plate (245), and a slot (2314) is provided on the lower end surface of the lower die base (231) for inserting the locking block (2454).

7. The modified atmosphere packaging machine according to claim 6, characterized in that: The lifting rod (243) is provided with an inflation groove (2431), and the lifting rod (243) is provided with an inflation joint (2432) that can be connected to a vacuum device. The top of the bottom plate (245) is provided with a mounting groove (2451), and the bottom wall of the mounting groove (2451) is provided with a mounting hole (2452). The top of the lifting rod (243) is provided with an inflation ring (2433) that can be inserted into the mounting hole (2452), and the mounting groove (2451) is provided with a mounting joint (2434) connected to the inflation ring (2433). The lower end surface of the lower mold base (231) is provided with an inflation channel (2315) that is connected to the interior of the lower mold base (231), and the inflation channel (2315) is connected to the inflation ring (2433).

8. The modified atmosphere packaging machine according to claim 7, characterized in that: An exhaust pipe (2444) is vertically passed through the workbench (1), and an exhaust joint (2443) that can be connected to an exhaust device is arranged below the exhaust pipe (2444), and one end of the exhaust joint (2443) away from the exhaust pipe (2444) is connected to the bottom of the lifting plate (244), and a socket (2455) into which the exhaust pipe (2444) can be inserted is provided below the bottom plate (245), and an exhaust channel (2316) connected to the interior of the lower mold base (231) is provided below the lower mold base (231), and the exhaust channel (2316) can be connected to the socket (2455).

9. The modified atmosphere packaging machine according to claim 2, characterized in that: The film collecting assembly (26) comprises a second operating plate (261) arranged on the side of the second vertical plate (12) away from the first vertical plate (11), a film collecting roller (262) located on the side of the second operating plate (261), a film collecting rod (263) arranged on the side of the film collecting roller (262) facing the second operating plate (261), a film collecting motor (264) arranged on the side of the second operating plate (261) away from the film collecting roller (262), and a transmission assembly (7) arranged on the side of the film collecting motor (264) away from the second operating plate (261); the transmission assembly (7) comprises an operating shell (71) sleeved on the outside of the film collecting rod (263) and an operating cover (72); the operating shell (71) is connected to the operating cover (72); the operating shell (71) is provided with an operating groove (711) on the side facing the operating cover (72); The operating groove (711) is provided with an operating spring (77), an active rod (75), a driven disk (74) sleeved on the outside of the film collecting rod (263), and an active disk (73) that rotates synchronously with the operating housing (71); the operating cover (72) and the bottom wall of the operating groove (711) are both provided with a positioning groove (712) for the active rod (75) to be inserted; the active disk (73) is located on the side of the driven disk (74) facing the operating cover (72); the active disk (73) is provided with a positioning hole (731) for the active rod (75) to pass through; the operating spring (77) is used to drive the active disk (73) and the driven disk (74) to be tightly pressed against each other; the active disk (73) and the driven disk (74) are driven by friction transmission; the film collecting motor (264) is used to drive the operating housing (71) and the operating cover (72) to rotate.

10. A packaging process of a modified atmosphere packaging machine, using the modified atmosphere packaging machine as claimed in claim 8, characterized in that: The steps include: Step 1, a loading process, placing the box on the feeding mechanism (3), and the feeding mechanism (3) transports the box to the material sorting mechanism (4); Step 2, material sorting process, adjusting the distance between adjacent boxes through the material sorting mechanism (4), and transporting the boxes to the packaging mechanism (2); Step 3, a transfer process, in which the box is transferred to the lower mold assembly (23) by a transfer mechanism (6); Step 4, packaging process, the lifting component (24) drives the lower mold component (23) and the box to rise, so that the lower mold component (23) and the upper mold component (22) are molded together, and then the vacuum component (29), the exhaust pipe (2444) and the exhaust joint (2443) cooperate to perform the exhaust action, followed by the air path component (28), the lifting rod (243) and the inflation joint (2432) The inflation action; then the heat sealing action of the heat sealing component is performed, and finally the cutting action of the cutting component is performed; Step five, the transfer process, transfers the box to the discharging mechanism (5) through the transfer mechanism (6).

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