An inner bag heat sealer

Abstract

The application belongs to the field of heat sealing machines and provides an inner bag heat sealing machine, which comprises a feeding mechanism, a first conveying belt, a sealing mechanism, a feeding mechanical arm and a second conveying belt, wherein the feeding mechanism comprises a hand expanding shaft, a plurality of tension rollers, a roller assembly, a cutting assembly and a first heat sealing assembly; the sealing mechanism comprises an upper suction assembly, a lower suction assembly, a sealing assembly, a second heat sealing assembly and a vacuum pumping assembly; the feeding mechanical arm comprises a first suction claw with Y-axis and Z-axis moving directions; the feeding mechanism comprises an opening and closing assembly, an X-axis assembly and a lifting assembly; the second conveying belt is arranged below the feeding mechanism and is used for receiving the packaging bag with materials taken back by the opening and closing assembly; the application solves the problems of the existing inner bag heat sealing machine, such as the wrinkles of the packaging bag itself cannot be effectively unfolded during the packaging and sealing process, the vacuum pumping effect is poor and the production efficiency is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of heat sealers, in particular to an inner bag heat sealer. BACKGROUND

[0002] With the continuous development of science and technology, tablet computers have a wide demand in the fields of education, media entertainment and business. In production, in order to improve the quality, the accessories (frame, back shell, etc.) or the whole machine need to be vacuum packaged when shipped. The prior art uses an inner bag heat sealer to package these accessories, but the wrinkles in the packaging bag itself cannot be effectively unfolded during the packaging and sealing process of the existing inner bag heat sealer, resulting in poor sealing effect and even air leakage. During the vacuuming process of the packaging bag, the vacuuming may not be complete, and the air suction end may not effectively extend into the inside of the packaging bag. Most of the existing devices use manual one-by-one sealing operation, which is not convenient for assembly line production, has low production efficiency, is not convenient for mass production, has high labor intensity, and is not convenient for realizing flow type sealing treatment of multiple packaging bags. SUMMARY

[0003] In view of the above technical problems, the present application provides an inner bag heat sealer, which solves the problems of the existing inner bag heat sealer that the wrinkles in the packaging bag itself cannot be effectively unfolded during the packaging and sealing process, poor vacuum air suction effect, and low production efficiency.

[0004] Other features and advantages of the present application will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, or some of the features and advantages may be learned by practice of the application.

[0005] The present application discloses an inner bag heat sealer, which comprises:

[0006] A material feeding mechanism, which comprises a hand expanding shaft, a plurality of tension rollers, a pair of roller assembly, a cutting assembly and a first heat sealing assembly, the hand expanding shaft is used for mounting a material roll, the material belt of the material roll passes through the plurality of tension rollers, the pair of roller assembly, the cutting assembly and the heat sealing assembly in sequence when discharging, the pair of roller assembly comprises two parallel rollers installed above and below, the cutting assembly is used for cutting the material belt, and the heat sealing assembly is used for heat sealing the port of the cut part of the material belt to form a packaging bag;

[0007] A first conveying belt, the inlet end of the first conveying belt is arranged at the outlet of the material feeding mechanism;

[0008] A sealing mechanism is arranged at the outlet end of the first conveying belt, which includes an upper suction assembly, a lower suction assembly, a sealing assembly, a second heat sealing assembly, and a vacuum suction assembly. The upper suction assembly is used to suck the upper layer of the packaging bag and drive it upward. The lower suction assembly is used to suck the lower layer of the packaging bag. The vacuum suction assembly includes a suction nozzle with X-axis and Z-axis moving directions, which is used to extend into the packaging bag opened by the upper suction assembly and the lower suction assembly to perform vacuum suction. The sealing assembly is used to compress one end of the packaging bag below it after vacuum suction. The second heat sealing assembly is used to heat seal the compressed end of the packaging bag.

[0009] A feeding mechanical arm includes a first suction claw with Y-axis and Z-axis moving directions, which is used to grab materials.

[0010] A feeding mechanism includes an opening and closing assembly, an X-axis assembly, and a lifting assembly. The lifting assembly is used to drive the opening and closing assembly to lift. The opening and closing assembly includes two insertion plates and a same opening and closing module that drives the two insertion plates to open and close. After the first suction claw sucks the materials, the materials are placed on the two insertion plates. The X-axis assembly is used to drive the opening and closing assembly to translate along the X-axis, so that the materials are inserted into the packaging bag in front of it. After the sealing mechanism heat seals the packaging bag containing the materials, the opening and closing assembly takes away the packaging bag containing the materials under the drive of the X-axis assembly.

[0011] A second conveying belt is arranged below the feeding mechanism, which is used to receive the packaging bag containing the materials taken away by the opening and closing assembly.

[0012] Further, the pair of roller assemblies further include a first motor, the feeding mechanism further includes two enclosing plates, both ends of the two parallel rollers are installed between the two enclosing plates through bearing seats, the same direction end of the two parallel rollers is installed with a first gear, the two first gears are transmitted to each other through a plurality of second gears, the first motor drives one of the first gears to rotate through a belt, the bearing seats at both ends of the upper parallel roller are connected with an adjusting frame through springs, the adjusting frame includes a fixed strip, a bolt, and a moving strip, the fixed strip is fixed with the enclosing plate, the bolt passes through the fixed strip and is threadedly connected with the fixed strip, the bottom of the bolt is fixed with the moving strip, and the moving strip is connected with the spring. When the bolt is twisted, the gap between the upper and lower parallel rollers can be adjusted, so that different types of material belts can be adapted. The two parallel rollers rotate under the drive of the first motor, the belt, and the gear, drive the material belt to move forward above the cutting assembly, and ensure that the two layers of the material belt are not loose during cutting.

[0013] Furthermore, the second heat-sealing assembly includes a first heating rod and a first Z-axis cylinder for driving the first heating rod to rise and fall. The pressure assembly includes a first mounting plate, a pressure strip disposed below the first mounting plate, and two second Z-axis cylinders respectively disposed at both ends of the first mounting plate for driving the first mounting plate to rise and fall. The first Z-axis cylinder is mounted on the first mounting plate. The suction assembly includes a suction strip, a first X-axis cylinder for driving the suction strip to translate, and a third Z-axis cylinder for driving the suction strip to rise and fall. A second mounting plate is disposed above the first mounting plate, and the third Z-axis cylinder is mounted on one side of the second mounting plate. Both the pressure strip and the first heating rod can rise and fall with the first mounting plate, which can improve the coordination of actions and reduce the programming difficulty. Under the drive of the third Z-axis cylinder and the first X-axis cylinder, the suction strip can realize the actions of descending, moving forward, sucking up the bag opening, and opening.

[0014] Furthermore, the sealing mechanism also includes two bag-opening components, which are disposed at both ends of the third mounting plate. Each component includes a shaped insert and a second X-axis cylinder that drives the shaped insert to translate. One side of the second X-axis cylinder is connected to a sliding plate, and the bottom of the sliding plate is connected to a rack. A second motor is mounted on the bottom of the third mounting plate, and the drive end of the second motor meshes with the rack. When the second motor rotates, it drives the rack to move along the Y-axis, thereby causing the second X-axis cylinder to move along the Y-axis. Based on the arrangement of the bag-opening components, it can be ensured that the bag opening can be fully opened, ensuring that the material can be fully inserted into the bag.

[0015] Furthermore, the sealing mechanism also includes a lifting assembly, which is located on the side of the sealing mechanism facing the feeding mechanism. This lifting assembly includes a fourth Z-axis cylinder that drives multiple lifting columns to move up and down. Based on the lifting assembly, the material inserted into the packaging bag can be lifted, ensuring that the insert plate in the opening and closing assembly of the feeding mechanism can be inserted under the packaging bag, catching the bag and removing it.

[0016] Furthermore, in the vacuum assembly, the suction nozzle is driven by a fifth Z-axis cylinder and a third X-axis cylinder.

[0017] Furthermore, the inner packaging heat sealing machine also includes a feeding conveyor belt, which is used to convey materials to the area below the first suction claw of the feeding robot.

[0018] Furthermore, the inner packaging heat sealing machine also includes a material unloading robot, which is disposed above the feeding mechanism and includes a second suction claw with Y-axis and Z-axis moving directions. The second suction claw is used to grab the packaging bag containing the material on the second conveyor belt.

[0019] Furthermore, both the first suction claw and the second suction claw are connected to a rotary cylinder.

[0020] Furthermore, the nozzle is flat and thin. This flat and thin nozzle shape ensures that it can be fully inserted into the packaging bag.

[0021] The technical solution disclosed herein has the following beneficial effects:

[0022] The automated coordination of the feeding, sealing, and conveying mechanisms enables efficient and rapid heat-sealing and vacuum packaging of materials, significantly improving productivity. The sealing mechanism, with its upper suction component, lower suction component, sealing component, second heat-sealing component, and vacuuming component, effectively reduces wrinkles in the packaging bag during vacuuming and heat sealing, improving packaging flatness, preventing subsequent air leakage, and enhancing product quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an inner packaging heat sealing machine as described in the embodiments of this specification;

[0024] Figure 2 This is a top view of an inner packaging heat sealing machine as described in the embodiments of this specification;

[0025] Figure 3 This is a partial structural diagram of an inner packaging heat sealing machine as described in the embodiments of this specification;

[0026] Figure 4 This is a schematic diagram of the feeding mechanism in the embodiments of this specification;

[0027] Figure 5 This is a partial structural schematic diagram of the feeding mechanism in the embodiments of this specification;

[0028] Figure 6 This is a partial structural schematic diagram of the feeding mechanism in the embodiments of this specification;

[0029] Figure 7 This is a schematic diagram of the sealing mechanism in the embodiments of this specification;

[0030] Figure 8 This is a schematic diagram of the sealing mechanism in the embodiments of this specification;

[0031] Figure 9 This is a schematic diagram of the sealing mechanism in the embodiments of this specification;

[0032] Figure 10 This is a schematic diagram of the feeding mechanism in the embodiments of this specification;

[0033] Figure 11 This is a schematic diagram of the loading robot in the embodiments of this specification;

[0034] Figure 12 This is a schematic diagram of the unloading robot in the embodiments of this specification;

[0035] Figure 13 This is a schematic diagram of the structure of the second conveyor belt in the embodiments of this specification.

[0036] The following are explanations of the reference numerals in the attached figures:

[0037] 1. Feeding mechanism; 11. Hand-operated expansion shaft; 12. Roller assembly; 121. Parallel roller; 122. First motor; 123. Bearing housing; 124. First gear; 125. Second gear; 126. Belt; 127. Spring; 128. Bolt; 129. Fixing strip; 1210. Moving strip; 13. Cutting assembly; 14. First heat sealing assembly; 15. Tension roller; 16. Enclosure plate;

[0038] 2. First conveyor belt;

[0039] 3. Sealing Mechanism; 31. Upper Suction Assembly; 311. Suction Strip; 312. First X-axis Cylinder; 313. Third Z-axis Cylinder; 314. Second Mounting Plate; 32. Lower Suction Assembly; 33. Sealing Assembly; 331. First Mounting Plate; 332. Sealing Strip; 333. Second Z-axis Cylinder; 34. Second Heat Sealing Assembly; 341. First Heating Rod; 342. First Z-axis Cylinder; 35. Vacuum Assembly; 351. Suction Nozzle; 352. Third X-axis Cylinder; 353. Fifth Z-axis Cylinder; 36. Bag Opening Assembly; 361. Irregular Shape Insert; 362. Second X-axis Cylinder; 363. Slide Plate; 364. Rack; 365. Second Motor; 366. Third Mounting Plate; 37. Lifting Assembly; 371. Lifting Column; 372. Fourth Z-axis Cylinder;

[0040] 4. Loading robot; 41. First suction claw; 42. Rotary cylinder;

[0041] 5. Feeding mechanism; 51. Opening and closing assembly; 511. Insert plate; 512. Simultaneous opening and closing module; 52. X-axis assembly; 53. Lifting assembly;

[0042] 6. Second conveyor belt;

[0043] 7. Unloading robot; 71. Second suction gripper;

[0044] 8. Feeding conveyor belt. Detailed Implementation

[0045] The exemplary implementation will now be described more fully with reference to the accompanying drawings.

[0046] The accompanying drawings are merely illustrative of this disclosure. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. It is understood that the scale of the various components in the drawings does not constitute a limitation of this disclosure.

[0047] like Figures 1-13 As shown in the embodiments of this specification, an inner packaging heat sealing machine is provided, which includes:

[0048] The feeding mechanism 1 includes a hand-operated shaft 11, multiple tension rollers 15, a roller assembly 12, a cutting assembly 13, and a first heat-sealing assembly 14. The hand-operated shaft 11 is used to install the material roll. When the material roll is discharged, it passes through multiple tension rollers 15, roller assembly 12, cutting assembly 13, and heat-sealing assembly in sequence. The roller assembly 12 includes two parallel rollers 121 installed vertically. The cutting assembly 13 is used to cut the material roll. The heat-sealing assembly is used to heat-seal the ends of the cut-off portion of the material roll to form a packaging bag.

[0049] The first conveyor belt 2 has its inlet end located at the outlet of the feeding mechanism 1;

[0050] The sealing mechanism 3 is located at the exit end of the first conveyor belt 2. It includes an upper suction component 31, a lower suction component 32, a pressing component 33, a second heat sealing component 34, and a vacuuming component 35. The upper suction component 31 is used to suck up the upper layer of the packaging bag and drive it upward. The lower suction component 32 is used to suck up the lower layer of the packaging bag. The vacuuming component 35 includes a suction nozzle 351 with X-axis and Z-axis moving directions. The suction nozzle 351 is used to extend into the packaging bag opened by the upper suction component 31 and the lower suction component 32 to perform vacuuming. The pressing component 33 is used to press one end of the vacuumed packaging bag below it. The second heat sealing component 34 is used to heat seal one end of the pressed packaging bag.

[0051] The loading robot 4 includes a first suction claw 41 with Y-axis and Z-axis moving directions, which is used to grasp materials.

[0052] The feeding mechanism 5 includes an opening and closing component 51, an X-axis component 52, and a lifting component 53. The lifting component 53 is used to drive the opening and closing component 51 to lift and lower. The opening and closing component 51 includes two insert plates 511 and a simultaneous opening and closing module 512 that drives the two insert plates 511 to open and close. After the first suction claw 41 picks up the material, it places the material on the two insert plates 511. The X-axis component 52 is used to drive the opening and closing component 51 to translate along the X-axis so that the material is inserted into the packaging bag in front of it. After the sealing mechanism 3 heat-seals the packaging bag containing the material, the opening and closing component 51, driven by the X-axis component 52, takes away the packaging bag containing the material.

[0053] The second conveyor belt 6 is located below the feeding mechanism 5 and is used to receive the packaging bags containing materials retrieved by the opening and closing component 51.

[0054] In one embodiment, the roller assembly 12 further includes a first motor 122, and the feeding mechanism 1 further includes two surrounding plates 16. The two ends of the two parallel rollers 121 are installed between the two surrounding plates 16 through bearing seats 123. A first gear 124 is installed at one end of the two parallel rollers 121 in the same direction. The two first gears 124 are mutually driven by multiple second gears 125. The first motor 122 drives one of the first gears 124 to rotate through a belt 126. The bearing seats 123 at both ends of the upper parallel roller 121 are connected to an adjusting frame through springs 127. The adjusting frame includes a fixing bar 129, a bolt 128, and a moving bar 1210. The fixing bar 129 is fixed to the surrounding plate 16. The bolt 128 passes through the fixing bar 129 and is threadedly connected to the fixing bar 129. The bottom of the bolt 128 is fixed to the moving bar 1210. The moving bar 1210 is connected to the spring 127. When the bolt 128 is tightened, the gap between the upper and lower parallel rollers 121 can be adjusted to accommodate different types of material strips. The two parallel rollers 121 rotate under the drive of the first motor 122, belt 126, and gear, which drives the material strip forward to the cutting assembly 13, ensuring that the two layers of film on the material strip will not come loose during cutting.

[0055] In one embodiment, the second heat-sealing assembly 34 includes a first heating rod 341 and a first Z-axis cylinder 342 for driving the first heating rod 341 to rise and fall. The pressing assembly 33 includes a first mounting plate 331, a pressing strip 332 disposed below the first mounting plate 331, and two second Z-axis cylinders 333 disposed at both ends of the first mounting plate 331 for driving the first mounting plate 331 to rise and fall. The first Z-axis cylinder 342 is mounted on the first mounting plate 331. The upper suction assembly 31 includes a suction strip 311, a first X-axis cylinder 312 for driving the suction strip 311 to translate, and a third Z-axis cylinder 313 for driving the suction strip 311 to rise and fall. A second mounting plate 314 is disposed above the first mounting plate 331, and the third Z-axis cylinder 313 is mounted on one side of the second mounting plate 314. Both the pressure strip 332 and the first heating rod 341 can rise and fall with the first mounting plate 331, which can improve the coordination of the movements and reduce the programming difficulty; the suction strip 311, driven by the third Z-axis cylinder 313 and the first X-axis cylinder 312, can realize the actions of descending, moving forward, sucking up the bag opening of the packaging bag and opening it.

[0056] In one embodiment, the sealing mechanism 3 further includes two bag-opening assemblies 36, which are disposed at both ends of the third mounting plate 366. Each assembly includes a shaped insert 361 and a second X-axis cylinder 362 that drives the shaped insert 361 to translate. One side of the second X-axis cylinder 362 is connected to a sliding plate 363, and the bottom of the sliding plate 363 is connected to a rack 364. A second motor 365 is mounted on the bottom of the third mounting plate 366, and the drive end of the second motor 365 meshes with the rack 364. When the second motor 365 rotates, it drives the rack 364 to move along the Y-axis, thereby causing the second X-axis cylinder 362 to move along the Y-axis. Based on the arrangement of the bag-opening assemblies 36, it can be ensured that the bag opening can be fully opened, ensuring that the material can be fully inserted into the bag.

[0057] In one embodiment, the sealing mechanism 3 further includes a lifting assembly 37, which is disposed on the side of the sealing mechanism 3 facing the feeding mechanism 1. The lifting assembly 37 includes a fourth Z-axis cylinder 372 that drives multiple lifting columns 371 to rise and fall. Based on the lifting assembly 37, the material inserted into the packaging bag can be lifted, ensuring that the insert plate 511 in the opening and closing assembly 51 of the feeding mechanism 5 can be inserted under the packaging bag, catch the packaging bag, and then remove it.

[0058] In one embodiment, in the vacuum assembly 35, the suction nozzle 351 is driven by a fifth Z-axis cylinder 353 and a third X-axis cylinder 352.

[0059] In one embodiment, the inner packaging heat sealing machine also includes a feeding conveyor belt 8, which is used to convey materials to the area below the first suction claw 41 of the feeding robot 4.

[0060] In one embodiment, the inner packaging heat sealing machine further includes a material unloading robot 7, which is disposed above the feeding mechanism 5. The material unloading robot 7 includes a second suction claw 71 with Y-axis and Z-axis movement directions. The second suction claw 71 is used to grab packaging bags containing materials on the second conveyor belt 6. Both the first suction claw 41 and the second suction claw 71 are connected to a rotary cylinder 42.

[0061] In one embodiment, the nozzle 351 is in the shape of a flat, thin strip. The flat, thin strip shape of the nozzle 351 ensures that it can be fully inserted into the packaging bag.

[0062] The working process of the inner packaging heat sealing machine is summarized below, based on all the above embodiments:

[0063] 1. The manual inserter inserts the barrelled material roll into the hand-operated expansion shaft 11, and the barrelled material roll is automatically loaded into the bag. The material belt tension control system uses tension roller 15, magnetic powder brake, roller tension spring, and gravity control. The material belt of the packaging bag moves forward along the set direction, and the first heat-sealing component 14 heat-seals the end of the packaging bag. The cutting component 13 separates a set of packaging bags. The cutting component 13 may specifically include a cutter and a cylinder that drives the cutter to move horizontally. Under normal conditions, the cutter is hidden on one side and is not connected to the packaging bag. When cutting is needed, the cylinder drives the cutter to move horizontally and cut out the packaging bag.

[0064] 2. A neat stack of materials is placed on the feeding conveyor belt 8 by a manual person. The materials flow along the feeding conveyor belt 8 to the end, where the feeding robot 4 picks up the materials.

[0065] 3. The packaging bag flows to the sealing mechanism 3 along the first conveyor belt 2. The upper suction component 31 and the lower suction component 32 respectively suction the upper and lower surfaces of the bag, making the bag open at the top and bottom. The left and right opening components 36 open the two sides of the bag opening. The feeding robot 4 picks up the material positioned on the feeding conveyor belt 8 and places it on the insert plate 511 of the opening and closing component 51 of the feeding mechanism 5. The insert plate 511 has an L-shaped cross section. It can clamp the material under the drive of the simultaneous opening and closing module 512 and then send it into the opened packaging bag. After the material is put down, the insert plate 511 is pulled out. Then the suction nozzle 351 of the vacuum component 35 is inserted into the packaging bag. The upper suction component 31 is lowered with the cylinder to put down the upper bag and then break the vacuum. The pressing component 33 is lowered to press the front end of the packaging bag. The vacuum component 35 evacuates the air and seals the packaging bag. After there is no air in the bag, the suction nozzle 351 of the vacuum component 35 is pulled out. The second heat sealing component 34 is lowered to heat seal the bag opening.

[0066] 4. The feeding mechanism 5 picks up the packaged product and places it on the second conveyor bag. The product flows to the end with the second conveyor belt 6. The unloading robot 7 picks up the positioned product on the second conveyor belt 6 and places it on the next work station.

[0067] The technical solution disclosed herein has the following beneficial effects:

[0068] Based on the automated coordination of the feeding mechanism 1, sealing mechanism 3 and feeding mechanism 5, heat sealing and vacuum packaging of materials can be achieved efficiently and quickly, greatly improving productivity. Based on the upper suction component 31, lower suction component 32, sealing component 33, second heat sealing component 34 and vacuum component 35 in sealing mechanism 3, the wrinkles of the packaging bag during vacuum heat sealing can be greatly reduced, improving the flatness of the packaging, avoiding air leakage later, and improving product quality.

[0069] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein.

Claims

1. An inner packaging heat sealing machine, characterized in that, The inner packaging heat sealing machine includes: The feeding mechanism includes a hand-operated shaft, multiple tension rollers, a roller assembly, a cutting assembly, and a first heat-sealing assembly. The hand-operated shaft is used to mount the material roll. When the material roll is discharged, it passes sequentially through the multiple tension rollers, the roller assembly, the cutting assembly, and the first heat-sealing assembly. The roller assembly includes two parallel rollers mounted vertically. The cutting assembly is used to cut the material roll. The first heat-sealing assembly is used to heat-seal the ends of the cut-off portion of the material roll to form a packaging bag. A first conveyor belt, the inlet end of which is located at the outlet of the feeding mechanism; A sealing mechanism is provided at the exit end of the first conveyor belt. It includes an upper suction component, a lower suction component, a pressing component, a second heat sealing component, and a vacuuming component. The upper suction component is used to suck up the upper layer of the packaging bag and drive it upward. The lower suction component is used to suck up the lower layer of the packaging bag. The vacuuming component includes a suction nozzle with X-axis and Z-axis movement directions. The suction nozzle is used to extend into the packaging bag opened by the upper suction component and the lower suction component to perform vacuuming. The pressing component is used to press one end of the vacuumed packaging bag below it. The second heat sealing component is used to heat seal one end of the pressed packaging bag. A loading robot, the loading robot including a first suction claw having Y-axis and Z-axis moving directions, the first suction claw being used to grasp materials; The feeding mechanism includes an opening and closing component, an X-axis component, and a lifting component. The lifting component drives the opening and closing component to move up and down. The opening and closing component includes two insert plates and a simultaneous opening and closing module that drives the two insert plates to open and close. After the first suction claw picks up the material, it places the material on the two insert plates. The X-axis component drives the opening and closing component to translate along the X-axis so that the material is inserted into the packaging bag in front of it. After the sealing mechanism heat-seals the packaging bag containing the material, the opening and closing component, driven by the X-axis component, removes the packaging bag containing the material. The second conveyor belt is disposed below the feeding mechanism and is used to receive the packaging bag containing materials retrieved by the opening and closing component. The roller assembly also includes a first motor, and the feeding mechanism also includes two side plates. The two ends of the two parallel rollers are mounted between the two side plates through bearing seats. A first gear is mounted on one end of each of the two parallel rollers in the same direction. The two first gears are mutually driven by multiple second gears. The first motor drives one of the first gears to rotate through a belt. The bearing seats at both ends of the upper parallel roller are connected to an adjusting frame through springs. The adjusting frame includes a fixing bar, a bolt, and a moving bar. The fixing bar is fixed to the side plate. The bolt passes through the fixing bar and is threadedly connected to the fixing bar. The bottom of the bolt is fixed to the moving bar. The moving bar is connected to the spring. The second heat-sealing assembly includes a first heating rod and a first Z-axis cylinder for driving the first heating rod to rise and fall. The pressure assembly includes a first mounting plate, a pressure strip disposed below the first mounting plate, and two second Z-axis cylinders disposed at both ends of the first mounting plate for driving the first mounting plate to rise and fall. The first Z-axis cylinder is mounted on the first mounting plate. The upper suction assembly includes a suction strip, a first X-axis cylinder for driving the suction strip to translate, and a third Z-axis cylinder for driving the suction strip to rise and fall. A second mounting plate is disposed above the first mounting plate, and the third Z-axis cylinder is mounted on one side of the second mounting plate.

2. The inner packaging heat sealing machine according to claim 1, characterized in that, The sealing mechanism also includes two bag-opening components, which are disposed at both ends of the third mounting plate. Each bag-opening component includes a shaped insert and a second X-axis cylinder that drives the shaped insert to translate. One side of the second X-axis cylinder is connected to a sliding plate, and the bottom of the sliding plate is connected to a rack. A second motor is mounted on the bottom of the third mounting plate. The driving end of the second motor meshes with the rack. When the second motor rotates, it drives the rack to move along the Y-axis, so that the second X-axis cylinder moves along the Y-axis.

3. The inner packaging heat sealing machine according to claim 1, characterized in that, The sealing mechanism also includes a lifting assembly, which is located on the side of the sealing mechanism facing the feeding mechanism. The lifting assembly includes multiple lifting columns and a fourth Z-axis cylinder that drives the multiple lifting columns to rise and fall.

4. The inner packaging heat sealing machine according to claim 1, characterized in that, In the vacuum assembly, the suction nozzle is driven by a fifth Z-axis cylinder and a third X-axis cylinder.

5. The inner packaging heat sealing machine according to claim 1, characterized in that, The inner packaging heat sealing machine also includes a feeding conveyor belt, which is used to convey materials to the area below the first suction claw of the feeding robot.

6. The inner packaging heat sealing machine according to claim 1, characterized in that, The inner packaging heat sealing machine also includes a material unloading robot, which is positioned above the feeding mechanism and includes a second suction claw with Y-axis and Z-axis moving directions. The second suction claw is used to grab the packaging bag containing the material on the second conveyor belt.

7. The inner packaging heat sealing machine according to claim 6, characterized in that, Both the first suction claw and the second suction claw are connected to a rotary cylinder.

8. The inner packaging heat sealing machine according to claim 1, characterized in that, The nozzle is flat and thin.

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