A bag opening and arranging device for a packaging machine

Abstract

The utility model discloses a kind of bag supporting and bag arranging devices for packing machine, the bag supporting and bag arranging device include: bag arranging base, left upper supporting block, left lower supporting block, right upper supporting block and right lower supporting block, the bag arranging base is equipped with for driving left upper supporting block, left lower supporting block, right upper supporting block;The left upper supporting block is equipped with left upper bag pressing assembly, the left lower supporting block is equipped with left lower bag pressing assembly, the right upper supporting block is equipped with right upper bag pressing assembly, the right lower supporting block is equipped with right lower bag pressing assembly;The utility model positions the edge of packaging bag in left upper supporting block by left upper bag pressing assembly, positions the edge of packaging bag in left lower supporting block by left lower bag pressing assembly, positions the edge of packaging bag in right upper supporting block by right upper bag pressing assembly, positions the edge of packaging bag in right lower supporting block by right lower bag pressing assembly, can prevent packaging bag from falling off and affect normal bagging.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, and specifically to a bag-supporting and bag-sorting device for packaging machines. Background Technology

[0002] Using gusseted bags with one sealed side and the other unsealed side is a common packaging method. The basic operation is to first open (stretch) the unsealed side of the gusseted bag, then feed the product into the gusseted bag, then tidy up the unsealed side of the gusseted bag, and finally seal it with a sealing machine. Our company has developed an automatic packaging machine. For specific technical details, please refer to the publication document of Chinese invention patent application, application publication number CN119568514A. The automatic bag sorting and sealing device of this automatic packaging machine has the following disadvantages (technical problems): After the gusseted bag is stretched open, when the automatic bag filling device pushes the product into the stretched gusseted bag, the gusseted bag, which is made of plastic film, slips between itself and the left upper support rod, left lower support rod, right upper support rod, and right lower support rod. This can easily cause the gusseted bag to fall off the automatic bag sorting and sealing device, resulting in bagging failure.

[0003] This utility model was proposed in response to the shortcomings of the existing technology. Utility Model Content

[0004] In view of the above-mentioned technical problems mentioned in the background art, the technical solution adopted by this utility model to solve its technical problems is as follows: A bag-supporting and bag-sorting device for a packaging machine, comprising: a bag-sorting base, an upper left support block, a lower left support block, an upper right support block, and a lower right support block; a bag-sorting drive mechanism for driving the upper left, lower left, upper right, and lower right support blocks to move left, right, up, and down; an upper left pressing component for positioning the edge of the packaging bag on the upper left support block; a lower left pressing component for positioning the edge of the packaging bag on the lower left support block; an upper right pressing component for positioning the edge of the packaging bag on the upper right support block; and a lower right pressing component for positioning the edge of the packaging bag on the lower right support block; the bag-sorting base also comprises a left inner folding rod, a right inner folding rod, and a bag-folding drive mechanism for driving the left and right inner folding rods to move left and right.

[0005] As described above, a bag-supporting and bag-sorting device for a packaging machine includes: an upper left bag-pressing assembly comprising: an upper left cylinder disposed on an upper left support block and an upper left pressing block connected to the actuating end of the upper left cylinder; a lower left bag-pressing assembly comprising: a lower left cylinder disposed on a lower left support block and a lower left pressing block connected to the actuating end of the lower left cylinder; an upper right bag-pressing assembly comprising: an upper right cylinder disposed on an upper right support block and an upper right pressing block connected to the actuating end of the upper right cylinder; and a lower right bag-pressing assembly comprising: a lower right cylinder disposed on a lower right support block and a lower right pressing block connected to the actuating end of the lower right cylinder.

[0006] As described above, a bag-supporting and sorting device for a packaging machine includes a bag-sorting base slidably connected to a first sliding seat and a second sliding seat in a horizontal direction. A left inner folding rod is disposed on the first sliding seat, and a right inner folding rod is disposed on the second sliding seat. A first linkage mechanism is provided between the first and second sliding seats to enable them to move synchronously towards or away from each other. The first linkage mechanism includes a first linkage rack, a second linkage rack, and a first linkage gear. The first linkage rack is connected to the first sliding seat, and the second linkage rack is connected to the second sliding seat. The first linkage gear meshes with both the first and second linkage racks. The bag-folding drive mechanism is a first linkage motor disposed on the bag-sorting base that drives the first linkage gear to rotate, thereby driving the left and right inner folding rods to move synchronously towards or away from each other.

[0007] As described above, a bag-supporting and bag-sorting device for a packaging machine includes a bag-sorting base slidably connected to a third sliding seat and a fourth sliding seat in a horizontal direction. A second linkage mechanism is provided between the third and fourth sliding seats to enable them to move synchronously towards each other or away from each other. The second linkage mechanism includes a third linkage rack, a fourth linkage rack, and a second linkage gear. The third linkage rack is connected to the third sliding seat, and the fourth linkage rack is connected to the fourth sliding seat. The second linkage gear meshes with both the third and fourth linkage racks. The bag-sorting drive mechanism includes a second linkage motor mounted on the bag-sorting base to drive the second linkage gear to rotate, thereby causing the third and fourth sliding seats to move synchronously towards each other or away from each other. A left-rising... The upper left and lower left lifting sliders are connected by a third linkage mechanism to keep them moving synchronously towards or away from each other. The upper left support block is connected to the upper left lifting slider, and the lower left support block is connected to the lower left lifting slider. A fourth sliding seat has an upper right and a lower right lifting slider slidably connected vertically. The upper right and lower right lifting sliders are connected by a fourth linkage mechanism to keep them moving synchronously towards or away from each other. The upper right support block is connected to the upper right lifting slider, and the lower right support block is connected to the lower right lifting slider. The bag-sorting drive mechanism includes a linkage drive mechanism that drives the upper left or lower left lifting slider to move up and down and drives the upper right or lower right lifting slider to move.

[0008] As described above, a bag-supporting and sorting device for a packaging machine includes a linkage drive mechanism comprising: a lifting transition seat, a left connecting block, a right connecting block, and a lifting driver for driving the lifting transition seat to move up and down. The lifting transition seat is slidably connected to the sorting base in the vertical direction. The left and right connecting blocks are slidably connected to the lifting transition seat in the horizontal direction. The upper end of the left connecting block is connected to the lower left lifting slider, and the upper end of the right connecting block is connected to the lower right lifting slider. The lifting driver is connected to the sorting base to drive the lifting transition seat to move up and down.

[0009] As described above, a bag-supporting and sorting device for a packaging machine includes a product guiding mechanism on the sorting base for guiding the product after the packaging bag is opened by the upper left support block, the lower left support block, the upper right support block, and the lower right support block. The product guiding mechanism includes a left guide seat and a right guide seat, which are connected to the sorting base. A left guide piece that can extend into the packaging bag is rotatably connected to the left guide seat, and a left guide motor for driving the left guide piece to rotate is provided on the left guide seat. A right guide piece that can extend into the packaging bag is rotatably connected to the right guide seat, and a right guide motor for driving the right guide piece to rotate is provided on the right guide seat.

[0010] As described above, in a bag-supporting and bag-sorting device for a packaging machine, the left guide seat is slidably connected to the bag-sorting base in the horizontal direction, and the bag-sorting base is provided with a left adjustment component for adjusting the position of the left guide seat relative to the bag-sorting base; the right guide seat is slidably connected to the bag-sorting base in the horizontal direction, and the bag-sorting base is provided with a right adjustment component for adjusting the position of the right guide seat relative to the bag-sorting base.

[0011] As described above, a bag-supporting and bag-sorting device for a packaging machine includes a left adjustment component comprising: a left strip-shaped hole disposed on a left guide seat, wherein a plurality of left adjustment bolts passing through the left strip-shaped hole are connected to the left strip-shaped hole, and the bag-sorting base is provided with a plurality of left threaded holes that cooperate with the left adjustment bolts; and a right adjustment component comprising: a right strip-shaped hole disposed on a right guide seat, wherein a plurality of right adjustment bolts passing through the right strip-shaped hole are connected to the right strip-shaped hole, and the bag-sorting base is provided with a plurality of right threaded holes that cooperate with the right adjustment bolts.

[0012] The beneficial effects of this utility model are: 1. This utility model uses the upper left pressing bag assembly to position the edge of the packaging bag on the upper left top support block, the lower left pressing bag assembly to position the edge of the packaging bag on the lower left top support block, the upper right pressing bag assembly to position the edge of the packaging bag on the upper right top support block, and the lower right pressing bag assembly to position the edge of the packaging bag on the lower right top support block. This can prevent the packaging bag from falling off the upper left, lower left, upper right, and lower right top support blocks when the product is put into the packaging bag, thus preventing it from affecting the normal bagging process.

[0013] 2. The left guide motor drives the left guide plate to rotate, allowing it to extend into the packaging bag. The right guide motor drives the right guide plate to rotate, allowing it to extend into the packaging bag. Guided by the left and right guide plates, the product smoothly enters the packaging bag. When the packaging bag needs to be adjusted, the left guide motor can remove the left guide plate from the packaging bag, and the right guide motor can remove the right guide plate from the packaging bag, without interfering with the next process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the bag-supporting and bag-sorting device in this embodiment; Figure 2 This is an exploded view of the bag-supporting and bag-sorting device in this embodiment; Figure 3 This is one of the structural schematic diagrams of the bag-supporting and bag-sorting device (hidden parts) in this embodiment; Figure 4 This is the second structural schematic diagram of the bag-supporting and bag-sorting device (hidden components) in this embodiment; Figure 5 This is one of the structural schematic diagrams of the bag folding drive mechanism and the product guiding mechanism in this embodiment; Figure 6 This is the second schematic diagram of the structure of the bag folding drive mechanism and the product guiding mechanism in this embodiment; Figure 7 This is a schematic diagram used in this embodiment to illustrate the working principle of the bag support and sorting device. Detailed Implementation

[0015] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0016] like Figures 1 to 7As shown, this utility model discloses a bag-supporting and bag-sorting device for a packaging machine. The bag-supporting and bag-sorting device 3 includes: a bag-sorting base 32, an upper left support block 331, a lower left support block 332, an upper right support block 333, and a lower right support block 334. The bag-sorting base 32 is provided with a bag-sorting driving mechanism for driving the upper left support block 331, the lower left support block 332, the upper right support block 333, and the lower right support block 334 to move left, right, up, and down. The upper left support block 331 is provided with an upper left pressing bag assembly 351 for positioning the edge of the packaging bag 800 on the upper left support block 331. The lower left support block 351... The support block 332 is provided with a lower left pressing bag assembly 352 for positioning the edge of the packaging bag 800 on the lower left top support block 332. The upper right top support block 333 is provided with an upper right pressing bag assembly 353 for positioning the edge of the packaging bag 800 on the upper right top support block 333. The lower right top support block 334 is provided with a lower right pressing bag assembly 354 for positioning the edge of the packaging bag 800 on the lower right top support block 334. The bag base 32 is also provided with a left inner folding rod 361, a right inner folding rod 362, and a bag folding drive mechanism 363 for driving the left inner folding rod 361 and the right inner folding rod 362 to move left and right. This invention uses the upper left pressing bag assembly 351 to position the edge of the packaging bag on the upper left support block 331, the lower left pressing bag assembly 352 to position the edge of the packaging bag on the lower left support block 332, the upper right pressing bag assembly 353 to position the edge of the packaging bag on the upper right support block 333, and the lower right pressing bag assembly 354 to position the edge of the packaging bag on the lower right support block 334. This prevents the packaging bag from falling off the upper left support block 331, the lower left support block 332, the upper right support block 333, and the lower right support block 334 when the product is put into the packaging bag, thus preventing it from affecting the normal bagging process.

[0017] Now, in conjunction with the appendix Figure 7 A simple explanation of the working principle of the bag-supporting and bag-sorting device: (1) Regarding bag support: When the bag support device supports the bag, the upper left support block 331, the lower left support block 332, the upper right support block 333 and the lower right support block 334 are inserted into the packaging bag. Then, under the action of the bag support drive mechanism, the upper left support block 331, the lower left support block 332, the upper right support block 333 and the lower right support block 334 open the four corners of the packaging bag (the upper left support block 331, the lower left support block 332, the upper right support block 333 and the lower right support block 334 are roughly arranged in a rectangular shape), thus realizing the function of supporting the bag. (2) Regarding the tidying up of the packaging bag to be sealed: After the four corners of the packaging bag are opened, and after the product is put into the opened packaging bag 800, the packaging bag needs to be tidyed up in order to seal it smoothly. Specifically, the left inner folding rod 361 and the right inner folding rod 362 are driven by the bag folding drive mechanism 363 to fold the left and right sides of the packaging bag inward. At the same time, the left upper support block 331 and the left lower support block 332 are closed together, and the right upper support block 333 and the right lower support block 334 are closed together, thus completing the bag tidying process (tidying up and folding the opening of the packaging bag).

[0018] In this embodiment, the upper left bag pressing assembly 351 includes: an upper left cylinder 3511 disposed on the upper left support block 331 and an upper left pressing block 3512 connected to the actuating end of the upper left cylinder 3511. The upper left cylinder 3511 drives the upper left pressing block 3512 to press or release the edge of the packaging bag. The lower left bag pressing assembly 352 includes: a lower left cylinder 3521 disposed on the lower left support block 332 and a lower left pressing block 3522 connected to the actuating end of the lower left cylinder 3521. The lower left cylinder drives the lower left pressing block to press or release the edge of the packaging bag. The upper right pressing bag assembly 353 includes an upper right cylinder 3531 mounted on the upper right support block 333 and an upper right pressing block 3532 connected to the actuating end of the upper right cylinder 3531. The upper right cylinder drives the upper right pressing block to press or release the edge of the packaging bag. The lower right pressing bag assembly 354 includes a lower right cylinder 3541 mounted on the lower right support block 334 and a lower right pressing block 3542 connected to the actuating end of the lower right cylinder 3541. The lower right cylinder drives the lower right pressing block to press or release the edge of the packaging bag.

[0019] In this embodiment, the left and right inner folding rods only need to move horizontally left and right. The bag base 32 is slidably connected to a first sliding seat 371 and a second sliding seat 372 in the horizontal direction. The left inner folding rod 361 is disposed on the first sliding seat 371, and the right inner folding rod 362 is disposed on the second sliding seat 372. A first linkage mechanism 373 is provided between the first sliding seat 371 and the second sliding seat 372 to keep the first sliding seat 371 and the second sliding seat 372 moving synchronously towards each other or away from each other. The first linkage mechanism 373 includes: a first linkage tooth. The system comprises a rack 3731, a second linkage rack 3732, and a first linkage gear 3733. The first linkage rack 3731 is connected to the first sliding seat 371, and the second linkage rack 3732 is connected to the second sliding seat 372. The first linkage gear 3733 meshes with both the first linkage rack 3731 and the second linkage rack 3732. The folding bag drive mechanism 363 is a first linkage motor mounted on the bag base 32 that drives the first linkage gear 3733 to rotate, thereby driving the left inner folding rod 361 and the right inner folding rod 362 to move synchronously in opposite directions or away from each other. With the above design, only one power source (the first linkage motor) is needed to drive the left inner folding rod and the right inner folding rod to move synchronously in opposite directions.

[0020] In this embodiment, the upper left support block 331, lower left support block 332, upper right support block 333, and lower right support block 334 all need to move left, right, up, and down. Therefore, the bag-collecting base 32 is slidably connected with a third sliding seat 374 and a fourth sliding seat 375 in the horizontal direction. A second linkage mechanism 376 is provided between the third sliding seat 374 and the fourth sliding seat 375 to keep them moving synchronously towards each other or away from each other. The second linkage mechanism 376 includes a third linkage rack 3761, a fourth linkage rack 3762, and a second linkage gear 3763. The third linkage rack 3761 and the fourth linkage gear 3763... The three sliding seats 374 are connected, the fourth linkage rack 3762 is connected to the fourth sliding seat 375, the second linkage gear 3763 meshes with both the third linkage rack 3761 and the fourth linkage rack 3762, the bag sorting drive mechanism includes: a second linkage motor 341 mounted on the bag sorting base 32 for driving the second linkage gear 3763 to rotate, thereby driving the third sliding seat 374 and the fourth sliding seat 375 to move synchronously in opposite directions or away from each other; the third sliding seat 374 is slidably connected to the upper left lifting slider 3741 and the lower left lifting slider 3742 along the vertical direction, the upper left lifting slider 3741 and the lower left lifting slider 3742 are slidably connected to each other. A third linkage mechanism 3743 is provided between the upper left lifting slider 3741 and the lower left lifting slider 3742 to keep them moving synchronously towards each other or away from each other (the working principle of the third linkage mechanism is similar to that of the first linkage mechanism, but without a power source like the first linkage motor, and will not be described in detail in this application). The upper left support block 331 is connected to the upper left lifting slider 3741, and the lower left support block 332 is connected to the lower left lifting slider 3742. The upper right lifting slider 3751 and the lower right lifting slider 3752 are slidably connected to the fourth sliding seat 375 along the vertical direction. A fourth linkage mechanism 3753 is provided to keep the upper right lifting slider 3751 and the lower right lifting slider 3752 moving synchronously towards each other or away from each other (the working principle of the third linkage mechanism is similar to that of the first linkage mechanism, but without a power source like the first linkage motor, and will not be described in detail in this application). The upper right support block 333 is connected to the upper right lifting slider 3751, and the lower right support block 334 is connected to the lower right lifting slider 3752. The bag-sorting drive mechanism includes a linkage drive mechanism 342 that drives the upper left lifting slider 3741 or the lower left lifting slider 3742 to move up and down and drives the upper right lifting slider 3751 or the lower right lifting slider 3752 to move. With this design, the upper left support block 331, the lower left support block 332, the upper right support block 333, and the lower right support block 334 can all move left, right, up, and down, and the structure is simple and easy to maintain.

[0021] In this embodiment, because there is a third linkage mechanism 3743 between the upper left lifting slider 3741 and the lower left lifting slider 3742, and a fourth linkage mechanism 3753 between the upper right lifting slider 3751 and the lower right lifting slider 3752, the linkage drive mechanism 342 is used to drive the lower left lifting slider 3742 and the lower right lifting slider 3752 to rise and fall. The linkage drive mechanism 342 includes: a lifting transition seat 3421, a left connecting block 3422, a right connecting block 3423, and a drive lifting transition seat 3421. The lifting driver 3424 is used for lifting and lowering. The lifting transition seat 3421 is slidably connected to the bag-collecting base 32 in the vertical direction. The left connecting block 3422 and the right connecting block 3423 are slidably connected to the lifting transition seat 3421 in the horizontal direction. The upper end of the left connecting block 3422 is connected to the lower left lifting slider 3742, and the upper end of the right connecting block 3423 is connected to the lower right lifting slider 3752. The lifting driver 3424 is connected to the bag-collecting base 32 to drive the lifting transition seat 3421 to lift and lower.

[0022] To ensure smooth product loading into the packaging bag, the bag-feeding base 32 is equipped with a product guiding mechanism 38 for guiding the product after the packaging bag 800 is opened by the upper left support block 331, lower left support block 332, upper right support block 333, and lower right support block 334. The product guiding mechanism 38 includes: a left guide seat 3... 81 and right guide seat 382, ​​the left guide seat 381 and right guide seat 382 are connected to the bag base 32, the left guide seat 381 is rotatably connected to a left guide piece 383 that can extend into the packaging bag 800, the left guide seat 381 is provided with a left guide motor 384 for driving the left guide piece 383 to rotate, the right guide seat 382 is rotatably connected to a right guide piece 385 that can extend into the packaging bag 800, the right guide seat 382 is provided with a right guide motor 386 for driving the right guide piece 385 to rotate. In use, the left guide plate 383 is rotated by the left guide motor 384, allowing it to extend into the packaging bag 800. The right guide plate 385 is rotated by the right guide motor 386, allowing it to extend into the packaging bag 800. Guided by the left and right guide plates, the product smoothly enters the packaging bag. When the packaging bag needs to be sorted, the left guide motor 384 can remove the left guide plate 383 from the packaging bag 800, and the right guide motor 386 can remove the right guide plate 385 from the packaging bag 800, without interfering with the next process.

[0023] In this embodiment, the left guide seat 381 is slidably connected to the bag-collecting base 32 in a horizontal direction. The bag-collecting base 32 is provided with a left adjustment component 387 for adjusting the position of the left guide seat 381 relative to the bag-collecting base 32. The right guide seat 382 is slidably connected to the bag-collecting base 32 in a horizontal direction. The bag-collecting base 32 is provided with a right adjustment component 388 for adjusting the position of the right guide seat 382 relative to the bag-collecting base 32. The distance between the left guide seat 381 and the right guide seat 382 can be adjusted by the left adjustment component 387 and the right adjustment component 388, thereby accommodating packaging bags of different sizes.

[0024] In this embodiment, the left adjustment component 387 includes: a left strip hole 3871 disposed on the left guide seat 381; a plurality of left adjustment bolts 3872 passing through the left strip hole 3871 connected to the left strip hole 3871; and a plurality of left threaded holes 3873 provided on the bag base 32 for use with the left adjustment bolts 3872. The position of the left guide seat 381 is achieved by the cooperation of the left adjustment bolts 3872, the left strip hole 3871, and the left threaded holes 3873. The adjustment of the right guide seat 382 includes: a right strip hole 3881 disposed on the right guide seat 382, ​​a plurality of right adjustment bolts 3882 passing through the right strip hole 3881 connected to the right strip hole 3881, and a plurality of right threaded holes 3883 disposed on the bag base 32 for use with the right adjustment bolts 3882. The adjustment of the right guide seat 382 is achieved by the cooperation of the right strip hole 3881, the right adjustment bolts 3882 and the right threaded holes 3883. The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A bag-supporting and bag-sorting device for a packaging machine, characterized in that, The bag-supporting and bag-sorting device (3) includes: a bag-sorting base (32), an upper left support block (331), a lower left support block (332), an upper right support block (333), and a lower right support block (334). The bag-sorting base (32) is provided with a bag-sorting driving mechanism for driving the upper left support block (331), the lower left support block (332), the upper right support block (333), and the lower right support block (334) to move left, right, up, and down. The upper left support block (331) is provided with an upper left pressing bag assembly (351) for positioning the edge of the packaging bag (800) on the upper left support block (331). The lower left support block (332) is provided with a left pressing bag assembly (351) for positioning the edge of the packaging bag (800) on the upper left support block (331). The edge of the bag (800) is positioned on the lower left support block (332) with a lower left pressing bag assembly (352). The upper right support block (333) is provided with an upper right pressing bag assembly (353) for positioning the edge of the bag (800) on the upper right support block (333). The lower right support block (334) is provided with a lower right pressing bag assembly (354) for positioning the edge of the bag (800) on the lower right support block (334). The bag base (32) is also provided with a left inner folding rod (361), a right inner folding rod (362), and a bag folding drive mechanism (363) for driving the left inner folding rod (361) and the right inner folding rod (362) to move left and right.

2. The bag-supporting and bag-sorting device for a packaging machine according to claim 1, characterized in that, The upper left pressure bag assembly (351) includes: an upper left cylinder (3511) disposed on the upper left support block (331) and an upper left pressure block (3512) connected to the actuating end of the upper left cylinder (3511); the lower left pressure bag assembly (352) includes: a lower left cylinder (3521) disposed on the lower left support block (332) and a lower left pressure block (3522) connected to the actuating end of the lower left cylinder (3521); the upper right pressure bag assembly (353) includes: an upper right cylinder (3531) disposed on the upper right support block (333) and an upper right pressure block (3532) connected to the actuating end of the upper right cylinder (3531); the lower right pressure bag assembly (354) includes: a lower right cylinder (3541) disposed on the lower right support block (334) and a lower right pressure block (3542) connected to the actuating end of the lower right cylinder (3541).

3. A bag-supporting and bag-sorting device for a packaging machine according to claim 1, characterized in that, The bag-collecting base (32) is slidably connected to a first sliding seat (371) and a second sliding seat (372) in the horizontal direction. The left inner folding rod (361) is disposed on the first sliding seat (371), and the right inner folding rod (362) is disposed on the second sliding seat (372). A first linkage mechanism (373) is provided between the first sliding seat (371) and the second sliding seat (372) to keep the first sliding seat (371) and the second sliding seat (372) moving synchronously towards each other or away from each other. The first linkage mechanism (373) includes: a first linkage rack (3731) and a second linkage rack. (3732) and the first linkage gear (3733), the first linkage rack (3731) is connected to the first sliding seat (371), the second linkage rack (3732) is connected to the second sliding seat (372), the first linkage gear (3733) meshes with the first linkage rack (3731) and the second linkage rack (3732) at the same time, and the folding bag driving mechanism (363) is a first linkage motor set on the bag base (32) to drive the first linkage gear (3733) to rotate, thereby driving the left inner folding rod (361) and the right inner folding rod (362) to move in opposite directions or away from each other synchronously.

4. A bag-supporting and bag-sorting device for a packaging machine according to claim 1, characterized in that, The bag-collecting base (32) is slidably connected to a third sliding seat (374) and a fourth sliding seat (375) in the horizontal direction. A second linkage mechanism (376) is provided between the third sliding seat (374) and the fourth sliding seat (375) to enable the third sliding seat (374) and the fourth sliding seat (375) to move synchronously towards each other or away from each other. The second linkage mechanism (376) includes: a third linkage rack (3761), a fourth linkage rack (3762), and a second linkage gear (3763). The third linkage rack (3761) is connected to the third sliding seat (374), and the fourth linkage rack (3762) is connected to the fourth sliding seat (3763). The rack (3762) is connected to the fourth sliding seat (375), and the second linkage gear (3763) meshes with both the third linkage rack (3761) and the fourth linkage rack (3762). The bag-sorting drive mechanism includes: a second linkage motor (341) mounted on the bag-sorting base (32) for driving the second linkage gear (3763) to rotate, thereby driving the third sliding seat (374) and the fourth sliding seat (375) to move synchronously towards each other or away from each other; the third sliding seat (374) is slidably connected with a left upper lifting slider (3741) and a left lower lifting slider (3742) in the vertical direction. A third linkage mechanism (3743) is provided between the upper left lifting slider (3741) and the lower left lifting slider (3742) to keep the upper left lifting slider (3741) and the lower left lifting slider (3742) moving synchronously towards each other or away from each other. The upper left support block (331) is connected to the upper left lifting slider (3741), and the lower left support block (332) is connected to the lower left lifting slider (3742). The upper right lifting slider (3751) and the lower right lifting slider (3752) are slidably connected on the fourth sliding seat (375) in the vertical direction. A fourth linkage mechanism (3753) is provided between the lifting sliders (3752) to keep the upper right lifting slider (3751) and the lower right lifting slider (3752) moving synchronously towards each other or away from each other. The upper right support block (333) is connected to the upper right lifting slider (3751), and the lower right support block (334) is connected to the lower right lifting slider (3752). The bag-sorting drive mechanism includes a linkage drive mechanism (342) that drives the upper left lifting slider (3741) or the lower left lifting slider (3742) to rise and fall and drives the upper right lifting slider (3751) or the lower right lifting slider (3752) to move.

5. A bag-supporting and bag-sorting device for a packaging machine according to claim 4, characterized in that, The linkage drive mechanism (342) includes: a lifting transition seat (3421), a left connecting block (3422), a right connecting block (3423), and a lifting driver (3424) for driving the lifting transition seat (3421) to move up and down. The lifting transition seat (3421) is slidably connected to the bag-collecting base (32) in the vertical direction. The left connecting block (3422) and the right connecting block (3423) are slidably connected to the lifting transition seat (3421) in the horizontal direction. The upper end of the left connecting block (3422) is connected to the lower left lifting slider (3742), and the upper end of the right connecting block (3423) is connected to the lower right lifting slider (3752). The lifting driver (3424) is connected to the bag-collecting base (32) to drive the lifting transition seat (3421) to move up and down.

6. A bag-supporting and bag-sorting device for a packaging machine according to claim 1, characterized in that, The bag-collecting base (32) is provided with a product guiding mechanism (38) for guiding the product after the packaging bag (800) is opened by the upper left support block (331), the lower left support block (332), the upper right support block (333), and the lower right support block (334). The product guiding mechanism (38) includes a left guide seat (381) and a right guide seat (382), which are connected to the bag-collecting base (32). A left guide piece (383) that can extend into the packaging bag (800) is rotatably connected to the left guide seat (381). A left guide motor (384) for driving the left guide piece (383) to rotate is provided on the left guide seat (381). A right guide piece (385) that can extend into the packaging bag (800) is rotatably connected to the right guide seat (382). A right guide motor (386) for driving the right guide piece (385) to rotate is provided on the right guide seat (382).

7. A bag-supporting and bag-sorting device for a packaging machine according to claim 6, characterized in that, The left guide seat (381) is slidably connected to the bag base (32) in the horizontal direction. The bag base (32) is provided with a left adjustment component (387) for adjusting the position of the left guide seat (381) relative to the bag base (32). The right guide seat (382) is slidably connected to the bag base (32) in the horizontal direction. The bag base (32) is provided with a right adjustment component (388) for adjusting the position of the right guide seat (382) relative to the bag base (32).

8. A bag-supporting and bag-sorting device for a packaging machine according to claim 7, characterized in that, The left adjustment assembly (387) includes: a left strip hole (3871) disposed on the left guide seat (381), and a plurality of left adjustment bolts (3872) passing through the left strip hole (3871) are connected to the left strip hole (3871); the bag base (32) is provided with a plurality of left threaded holes (3873) that cooperate with the left adjustment bolts (3872); the right adjustment assembly (388) includes: a right strip hole (3881) disposed on the right guide seat (382), and a plurality of right adjustment bolts (3882) passing through the right strip hole (3881) are connected to the right strip hole (3881); the bag base (32) is provided with a plurality of right threaded holes (3883) that cooperate with the right adjustment bolts (3882).

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