Bag opening and opening device for degradable packaging bag production

Abstract

The invention relates to the technical field of packaging bag processing, in particular to a degradable packaging bag production bag opening and opening device which comprises a base, an automatic feeding mechanism is arranged on the right side of the top of the base, a heat sealing and cutting mechanism is arranged on the left side of the automatic feeding mechanism, and a self-adaptive bag opening mechanism is arranged on the left side of the heat sealing and cutting mechanism. A discharging and transferring mechanism is arranged on the left side of the base, the automatic feeding mechanism comprises fixing plates symmetrically and fixedly connected to the right side of the top wall of the base, and carrying rollers are rotationally installed on the inner sides of the fixing plates. According to the packaging bag opening device, packaging bags formed through hot-pressing cutting are opened one by one through the self-adaptive bag opening mechanism, and meanwhile, through cooperative arrangement of a first electromagnet, a magnetic supporting rod and bag opening suction cups, rapid bag opening of packaging bag sealing strips is achieved through the bag opening suction cups on the two sides of a bag opening groove; and the effect of rapidly opening and supporting the degradable packaging bag formed by hot-pressing and cutting is achieved, and the packaging efficiency of the finished packaging bag in use is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of packaging bag processing, in particular to a bag opening and supporting device for producing degradable packaging bags. Background Art

[0002] Degradable packaging bags are light in weight and have little pollution, and are widely used in soybean fiber packaging. Among them, ziplock bags have good sealing properties and can be opened when used, which is conducive to the storage of soybean fiber. In the automated production workshop for ziplock bags, the ziplock bags are automatically hot-pressed and cut according to the production requirements of different width specifications of ziplock bags, thereby ensuring the production efficiency of the packaging bags.

[0003] In the existing production process of ziplock bags, the sealing strips of the biodegradable ziplock bags formed by heat pressing and cutting are mostly closed. Before packaging the product, the sealing strips of the bags need to be opened and then the target product can be packaged. Therefore, the formed bags have an additional opening process before use, which affects the packaging efficiency of the products and needs to be improved. Summary of the invention

[0004] In view of the fact that the self-sealing packaging bags formed by heat sealing and cutting in the prior art need to be opened before use, the present invention provides a bag opening and holding device for the production of degradable packaging bags, which solves the technical problem of low packaging efficiency.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a bag opening and bag holding device for the production of degradable packaging bags, comprising a base, an automatic feeding mechanism is provided on the top right side of the base, a heat sealing and cutting mechanism is provided on the left side of the automatic feeding mechanism, an adaptive bag holding mechanism is provided on the left side of the heat sealing and cutting mechanism, and a material unloading and transfer mechanism is provided on the left side of the base.

[0006] The automatic feeding mechanism includes a fixed plate symmetrically fixedly connected to the right side of the top wall of the base, a loading roller is rotatably installed on the inner side of the fixed plate, a packaging film is sleeved on the outer side of the loading roller, a plurality of fixed frames are equidistantly fixedly connected to the front and rear side walls of the base, feeding rollers are rotatably installed inside the fixed frames, a motor is provided on the outer side of the outermost fixed frame, the output end of the motor is fixedly connected to the side wall of the feeding roller, and limit plates are symmetrically provided on the left side of the feeding roller, and the limit plates are fixedly connected to the top wall of the base.

[0007] Preferably, the heat-sealing and cutting mechanism comprises connecting rods fixedly connected to the front and rear side walls of the base, the tops of the connecting rods are fixedly connected to cylinders, the bottoms of the cylinders are slidably mounted with pneumatic sliders, and transverse guide rails are fixedly connected between adjacent pneumatic sliders.

[0008] A sliding rod is fixedly installed at the bottom of the cylinder, and the pneumatic slider is slidably sleeved on the sliding rod. A reset spring is fixedly connected to the bottom wall of the pneumatic slider, and the reset spring is sleeved on the outside of the sliding rod. Conductive contacts are symmetrically fixedly connected to the left and right sides of the bottom wall of the pneumatic slider, and a conductive seat is provided below the conductive contact, which is fixedly connected to the base.

[0009] A cutting groove is provided on the top wall of the base and directly below the transverse guide rail, a cutting knife is fixedly connected to the center of the bottom wall of the transverse guide rail, and hot pressing strips are fixedly connected to the left and right sides of the bottom wall of the transverse guide rail. The hot pressing strips are symmetrically arranged on both sides of the cutting knife, and the cutting knife and the cutting groove are located on a straight line in the same vertical direction.

[0010] Preferably, the adaptive bag-holding mechanism includes a connecting arm fixedly connected to the front side wall of the base, the top and bottom of the connecting arm are fixedly connected to a driving sleeve, an elliptical limiting frame is slidably installed inside the driving sleeve along the longitudinal direction, oblique rods are symmetrically fixedly connected to the two sides of the bottom of the elliptical limiting frame, a longitudinal rod is slidably installed at the center of the bottom wall of the elliptical limiting frame, and the bottom ends of the oblique rod and the longitudinal rod are fixedly connected to bag-holding suction cups.

[0011] The adaptive bag-supporting mechanism also includes a first electromagnet fixedly connected to the inner center of the connecting arm, the top and bottom of the first electromagnet are fixedly connected to a first spring, the other end of the first spring is fixedly connected to a magnetic support rod, the magnetic support rod extends through the interior of the driving sleeve, and the end of the magnetic support rod is fixedly connected to the side wall of the elliptical limit frame.

[0012] An elastic airbag is fixedly connected inside the elliptical limiting frame, a second electromagnet is fixedly connected to the inner top of the elastic airbag, a second spring is fixedly connected to the bottom of the second electromagnet, and the bottom end of the second spring is fixedly connected to the longitudinal rod.

[0013] Preferably, a bag-supporting groove is opened laterally on the top of the base, the bag-supporting suction cup is located inside the bag-supporting groove, the elliptical side wall of the elliptical limiting frame is set to a flexible material, and the first electromagnet and the second electromagnet are both electrically connected to the conductive contact piece and the conductive seat.

[0014] Preferably, the material unloading and transfer mechanism includes a driving seat fixedly connected to the left side wall of the base, a multi-axis robotic arm is rotatably mounted on the top of the driving seat, a material unloading suction cup is rotatably mounted on the bottom of the multi-axis robotic arm, and a loading frame is fixedly connected to the rear side wall of the base.

[0015] By means of the above technical solution, the present invention provides a bag opening and supporting device for producing degradable packaging bags, which has at least the following beneficial effects:

[0016] 1. The present invention realizes opening the packaging bags formed by hot pressing one by one through an adaptive bag-opening mechanism. At the same time, through the coordination between the first electromagnet, the magnetic sliding rod and the bag-opening suction cup, the bag-opening suction cups on both sides of the bag-opening groove are used to realize the rapid bag-opening of the sealing strip of the packaging bag, thereby achieving the effect of rapidly opening and opening the degradable packaging bags formed by hot pressing, and greatly improving the packaging efficiency of the finished packaging bags when they are used.

[0017] 2. The present invention automatically feeds the packaging bags through the automatic feeding mechanism, and at the same time, through the coordination between the loading roller, the motor and the feeding roller, the effect of continuous compaction and feeding of the packaging bags along the lateral direction of the base is achieved. The degree of automation is high, wrinkles in the packaging bag conveying process are avoided, and the processing quality of the packaging bag is improved.

[0018] 3. The present invention realizes heat-sealing and cutting of transversely transported packaging bags through a heat-sealing and cutting mechanism. At the same time, through the coordination of the cylinder, the pneumatic slider, the cutting knife and the heat pressing strip, the cylinder is used to drive the transverse guide rail to move downward, thereby realizing automatic heat-sealing and cutting of the self-sealing packaging bags, which greatly improves the production efficiency of the packaging bags.

[0019] 4. In the process of hot pressing and cutting the packaging bag by the heat sealing and cutting mechanism of the present invention, when the pneumatic slider runs to the bottom, it drives the conductive contact piece and the conductive seat to be energized, driving the first electromagnet inside the adaptive bag-opening mechanism to open, thereby achieving the effect of synchronously opening the packaging bag after heat sealing and cutting, and further improving the production efficiency of the packaging bag.

[0020] 5. The present invention controls the cutting of packaging bags of different specifications by adjusting the interval between the two openings of the cylinder when the heat-sealing cutting mechanism is working, thereby achieving the effect of rapid cutting and forming of packaging bags of various widths and specifications, and greatly improving the versatility of packaging bag production.

[0021] 6. The present invention controls the current flowing through the second electromagnet through the time difference between the two energizations when the cylinder is working, thereby realizing adaptive expansion of packaging bags of different widths, greatly ensuring the heat sealing effect of the heat sealing area of ​​the sealing strip of the ziplock bag, avoiding the phenomenon of the sealing strip tearing due to excessive expansion of the packaging bag and the sealing strip automatically closing due to insufficient expansion, thus ensuring the stability of the packaging bag expansion and opening to a great extent.

[0022] 7. The present invention realizes automatic transfer of the packaging bags after the bags are stretched through the unloading transfer mechanism. At the same time, through the coordinated setting of the multi-axis mechanical arm, the unloading suction cup and the loading frame, the effect of automatic transfer and collection of the packaging bags after the bags are stretched is achieved, further improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the automatic feeding mechanism of the present invention;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the heat-sealing and cutting mechanism of the present invention;

[0027] Figure 4 It is a schematic diagram of the side structure of the heat sealing and cutting mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the adaptive bag-holding mechanism and the material-unloading and transferring mechanism of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal three-dimensional structure of the adaptive bag-holding mechanism of the present invention;

[0030] Figure 7 This is a schematic diagram of the internal structure of the adaptive bag-holding mechanism of the present invention from a side view;

[0031] Figure 8 It is a schematic diagram of the internal structure of the elastic airbag of the present invention.

[0032] In the figure: 1. base; 2. automatic feeding mechanism; 20. fixed plate; 21. loading roller; 22. packaging film; 23. fixed frame; 24. motor; 25. feeding roller; 26. limit plate; 27. bag support groove; 3. heat sealing cutting mechanism; 30. connecting rod; 31. cylinder; 32. pneumatic slide; 33. horizontal guide rail; 34. cutting groove; 35. slide bar; 36. reset spring; 37. conductive contact sheet; 38. conductive seat; 39. cutting knife; 31. 0. Hot pressing strip; 4. Adaptive bag-holding mechanism; 40. Connecting arm; 401. First electromagnet; 402. First spring; 403. Magnetic support rod; 41. Driving sleeve; 42. Elliptical limit frame; 43. Oblique rod; 44. Bag-holding suction cup; 45. Longitudinal rod; 46. Elastic airbag; 47. Second electromagnet; 48. Second spring; 5. Material unloading and transfer mechanism; 50. Driving seat; 51. Multi-axis robotic arm; 52. Material unloading suction cup; 53. Loading frame. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1

[0035] Please refer to Figure 1-Figure 2 A bag opening and holding device for the production of biodegradable packaging bags comprises a base 1, an automatic feeding mechanism 2 is arranged on the top right side of the base 1, a heat sealing and cutting mechanism 3 is arranged on the left side of the automatic feeding mechanism 2, an adaptive bag holding mechanism 4 is arranged on the left side of the heat sealing and cutting mechanism 3, and a material unloading and transferring mechanism 5 is arranged on the left side of the base 1. During the production process of packaging bags, the packaging bags are transported transversely along the base 1 by the automatic feeding mechanism 2, and then the packaging bags are heat sealed and cut by the heat sealing and cutting mechanism 3. After the cutting, the packaging bags are opened and held by the adaptive bag holding mechanism 4, and the held packaging bags are transferred and conveyed by the unloading and transferring mechanism 5, so that the automatic cutting and holding processing of the packaging bags is realized in the whole process.

[0036] The automatic feeding mechanism 2 includes a fixed plate 20 symmetrically fixedly connected to the right side of the top wall of the base 1, a loading roller 21 is rotatably installed on the inner side of the fixed plate 20, and a packaging film 22 is sleeved on the outer side of the loading roller 21. A plurality of fixed frames 23 are equidistantly fixedly connected to the front and rear side walls of the base 1, and a feeding roller 25 is rotatably installed inside the fixed frames 23. A motor 24 is provided on the outer side of the outermost fixed frame 23, and the output end of the motor 24 is fixedly connected to the side wall of the feeding roller 25. A limiting plate 26 is symmetrically provided on the left side of the feeding roller 25, and the limiting plates 26 are fixedly connected to the top wall of the base 1. The limiting plates 26 are used to control the lateral conveying process of the packaging film 22. The limit in the middle, before the processing starts, the end of the packaging film 22 rolled on the loading roller 21 is inserted into the gap between the bottom wall of the feeding roller 25 and the base 1, and then the motor 24 is turned on. The rotation of the motor 24 drives the feeding roller 25 to rotate, thereby realizing the lateral transportation of the packaging film 22 rolled on the loading roller 21, and the packaging film 22 is automatically fed by the automatic feeding mechanism 2. At the same time, through the coordinated setting between the loading roller 21, the motor 24 and the feeding roller 25, the packaging film 22 is continuously compacted and fed along the lateral direction of the base 1. The degree of automation is high, wrinkles in the packaging bag transportation process are avoided, and the processing quality of the packaging bag is improved.

[0037] Embodiment 2

[0038] Please refer to Figure 3-Figure 4This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0039] The heat sealing and cutting mechanism 3 includes a connecting rod 30 fixedly connected to the front and rear side walls of the base 1, the top of the connecting rod 30 is fixedly connected to a cylinder 31, the bottom of the cylinder 31 is slidably installed with a pneumatic slider 32, and a transverse guide rail 33 is fixedly connected between adjacent pneumatic sliders 32. During the transverse conveying process of the packaging film 22 rotating by the feed roller 25, the rotation speed of the motor 24 is ensured to be constant, so that the packaging film 22 is conveyed at a uniform speed on the base 1. When the packaging film 22 needs to be heat sealed and cut, the cylinder 31 is turned on to drive the transverse guide rail 33 to move downward, and the cutting knife 39, the cutting groove 34 and the hot pressing strip 310 are used to realize hot pressing and cutting of the packaging film 22.

[0040] The bottom of the cylinder 31 is fixedly installed with a slide bar 35, and the pneumatic slide bar 32 is slidably sleeved on the slide bar 35. The bottom wall of the pneumatic slide bar 32 is fixedly connected with a return spring 36, and the return spring 36 is sleeved on the outer side of the slide bar 35. The left and right sides of the bottom wall of the pneumatic slide bar 32 are symmetrically fixedly connected with conductive contacts 37. A conductive seat 38 is provided below the conductive contact 37, and the conductive seat 38 is fixedly connected to the base 1. When the cylinder 31 is turned on, the pneumatic slide bar 32 is driven to move up and down along the slide bar 35 until the cutting knife 39 at the bottom of the transverse guide rail 33 cuts the packaging film 22. At the same time, the hot pressing strips 310 on both sides synchronously heat seal the two sides of the cutting area of ​​the packaging film 22. In this way, the packaging bag is hot-pressed and cut into shape. The cut packaging bag is located on the work station of the adaptive bag-holding mechanism 4. When the pneumatic slide bar 32 moves downward, the conductive contact 37 and the conductive seat 38 are in contact, which drives the first electromagnet 401 in the adaptive bag-holding mechanism 4 to be energized, and synchronously drives the cut packaging bag to open and hold the bag.

[0041] The cam 33 is provided with a plurality of cams 310 which are provided on the bottom wall of the base 1 and on the bottom wall of the base 1. The cam 33 is provided with a plurality of cams 310 which are provided on the bottom wall of the base 1 and on the bottom wall of the base 1. The cam 33 is provided with a plurality of cams 310 which are provided on the bottom wall of the base 1 and on the bottom wall of the base 1. The cam 33 is provided with a plurality of cams 310 which are provided on the bottom wall of the base 1 and on the bottom wall of the base 1. The cam 33 is provided with a plurality of cams 310 which are provided on the bottom wall of the base 1 and on the bottom wall of the base 1.

[0042] Embodiment 3

[0043] Please refer to Figure 5-Figure 8 This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0044] The adaptive bag-holding mechanism 4 comprises a connecting arm 40 fixedly connected to the front side wall of the base 1, the top and bottom of the connecting arm 40 are fixedly connected to a driving sleeve 41, an elliptical limit frame 42 is slidably installed inside the driving sleeve 41 along the longitudinal direction, oblique rods 43 are symmetrically fixedly connected to the two sides of the bottom of the elliptical limit frame 42, a longitudinal rod 45 is slidably installed at the center of the bottom wall of the elliptical limit frame 42, the longitudinal rod 45 is set to a magnetic material, and the bottom ends of the oblique rod 43 and the longitudinal rod 45 are fixedly connected to a bag-holding suction cup 44, and the packaging bag cut and formed by the heat-sealing cutting mechanism 3 is located inside the adaptive bag-holding mechanism 4, and during the downward movement of the pneumatic slider 32 and the transverse guide rail 33, the conductive The contact piece 37 and the conductive seat 38 are energized, which drives the first electromagnet 401 to be energized. Under the adsorption effect of magnetic force, the elliptical limit frames 42 are brought closer to each other, thereby driving the longitudinal rod 45 and the oblique rod 43 at the bottom to be brought closer to each other. At this time, the bag-holding suction cup 44 is opened, and the two sides of the packaging bag are adsorbed under the action of suction. During the process of hot pressing and cutting the packaging bag by the heat sealing and cutting mechanism 3, the pneumatic slider 32 drives the conductive contact piece 37 and the conductive seat 38 to be energized when it runs to the bottom, and drives the first electromagnet 401 inside the adaptive bag-holding mechanism 4 to be opened, thereby achieving the effect of synchronously opening the packaging bag after heat sealing and cutting, and further improving the production efficiency of the packaging bag.

[0045] As a preferred technical solution of this embodiment, the adaptive bag-holding mechanism 4 also includes a first electromagnet 401 fixedly connected to the inner center of the connecting arm 40, the top and bottom of the first electromagnet 401 are fixedly connected to a first spring 402, the other end of the first spring 402 is fixedly connected to a magnetic support rod 403, the magnetic support rod 403 extends through the interior of the driving sleeve 41, and the end of the magnetic support rod 403 is fixedly connected to the side wall of the elliptical limit frame 42. When the cutting is completed, under the restoring force of the reset spring 36, the conductive contact piece 37 moves up and releases contact with the conductive seat 38. At this time, the electromagnetic force of the first electromagnet 401 disappears, and the first springs on both sides are fixedly connected. Under the action of the restoring force of the spring 402, the bag-holding suction cups 44 move away from each other to open the packaging bag. After the packaging bag is held open, the bag-holding suction cups 44 are closed, and the completed packaging bag is placed on the corresponding station of the adaptive bag-holding mechanism 4 on the base 1. The adaptive bag-holding mechanism 4 is used to open the packaging bags formed by hot pressing one by one. At the same time, through the coordination between the first electromagnet 401, the magnetic support rod 403 and the bag-holding suction cups 44, the bag-holding suction cups 44 on both sides of the bag-holding groove 27 are used to realize the rapid bag-holding of the packaging bag sealing strip, thereby achieving the effect of quickly opening and holding the biodegradable packaging bags formed by hot pressing, thereby greatly improving the packaging efficiency of the finished packaging bags when they are used.

[0046] As a preferred technical solution of this embodiment, an elastic airbag 46 is fixedly connected to the inside of the elliptical limit frame 42, a second electromagnet 47 is fixedly connected to the inner top of the elastic airbag 46, a second spring 48 is fixedly connected to the bottom of the second electromagnet 47, and the bottom end of the second spring 48 is fixedly connected to the longitudinal rod 45. When the bag-opening suction cups 44 move away from each other to open the packaging bag, the second electromagnet 47 is turned on synchronously to drive the second spring 48 to compress, driving the longitudinal rod 45 at the bottom of the top of the packaging bag to move toward the side away from the packaging bag, thereby increasing the opening amplitude of the central area of ​​the packaging bag. Since the center of the elliptical limit frame 42 is narrow and the two sides are flat, the packaging bag is opened with a large opening in the center and small openings at the edges on both sides.

[0047] Embodiment 4

[0048] Please refer to Figure 4 and Figure 7 This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0049] A bag holding groove 27 is provided on the top of the base 1 in the transverse direction. The bag holding groove 27 is located on the side close to the sealing strip on the packaging film 22. The bag holding suction cup 44 is located inside the bag holding groove 27. The elliptical side wall of the elliptical limit frame 42 is set to a flexible material to ensure that the first electromagnet 401 drives the elliptical limit frame 42 to move downward after it is turned on, and the oblique rod 43 and the longitudinal rod 45 at the bottom thereof both slide in the longitudinal direction. In addition, the setting of the elliptical frame ensures that the sliding amplitude of the central longitudinal rod 45 is large and the sliding amplitude of the oblique rods 43 on both sides is small. The first electromagnet 401 and the second electromagnet 47 of the elliptical limit frame 42 are both electrically connected to the conductive contact piece 37 and the conductive seat 38. During the downward movement and cutting process of the transverse guide rail 33, when the conductive contact piece 37 and the conductive seat 38 are in contact, the first electromagnet 401 inside the adaptive bag holding mechanism 4 is driven to be turned on synchronously, thereby realizing that after the downward movement and cutting, the cut and formed packaging bag is synchronously held when moving upward, and as the packaging bag is held The conveying continues, and the cylinder 31 intermittently drives the transverse guide rail 33 to move downward. Here, it is special that since the rotation speed of the motor 24 is constant, the conveying speed of the packaging bag is constant. When the cutting width of the packaging bag needs to be adjusted, it is only necessary to change the time interval for each time the cylinder 31 drives the transverse guide rail 33 to move downward. When the time interval is longer, the cut packaging bag is wider, and when the interval is shorter, the cut packaging bag is narrower. It is special that the current flowing through the second electromagnet 47 is kept linearly synchronized with the time interval for the cylinder 31 to move downward. When the time interval is longer, the cut packaging bag is wider, the current flowing through the second electromagnet 47 is greater, and the electromagnetic adsorption force of the second electromagnet 47 is greater, which drives the longitudinal rod 45 to slide larger. At this time, the spacing between the bag-supporting suction cups 44 located in the center area of ​​the packaging bag becomes larger, and the wider packaging bag is correspondingly supported and opened, thereby avoiding the phenomenon of automatic suction of the sealing strip caused by too small an opening range. Similarly, when the time interval is shorter, the narrower the cut packaging bag is, the smaller the current flowing through the second electromagnet 47 is, and the magnetic adsorption force of the second electromagnet 47 is smaller, which drives the longitudinal rod 45 to slide slightly. At this time, the spacing between the bag-strengthening suction cups 44 located in the central area of ​​the packaging bag becomes smaller, and the narrower packaging bag is correspondingly stretched and opened, thereby avoiding the tearing of the sealing strip caused by excessive bag opening. The current flowing through the second electromagnet 47 is controlled by the time difference between the two power-on times when the cylinder 31 is working, so as to realize adaptive stretching of packaging bags of different widths, greatly ensuring the heat sealing effect of the heat sealing area of ​​the ziplock bag sealing strip, avoiding the tearing of the sealing strip caused by excessive stretching of the packaging bag and the automatic suction of the sealing strip caused by too small stretching, thereby ensuring the stability of the bag stretching and opening to a great extent.

[0050] Embodiment 5

[0051] Please refer to Figure 5 This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0052] The material unloading and transfer mechanism 5 includes a driving seat 50 fixedly connected to the left side wall of the base 1, a multi-axis robotic arm 51 is rotatably installed on the top of the driving seat 50, and a material unloading suction cup 52 is rotatably installed on the bottom of the multi-axis robotic arm 51, and a loading frame 53 is fixedly connected to the rear side wall of the base 1. The packaging bag after bag opening falls on the base 1. At this time, the bag opening driving seat 50 drives the material unloading suction cup 52 to adsorb the packaging bag, and then the multi-axis robotic arm 51 rotates along the driving seat 50 to transfer the packaging bag to the inside of the loading frame 53, and the packaging bag after bag opening is automatically transferred through the unloading and transfer mechanism 5. At the same time, through the coordination of the multi-axis robotic arm 51, the material unloading suction cup 52 and the loading frame 53, the effect of automatic transfer and collection of the packaging bag after bag opening is achieved, thereby further improving the processing efficiency.

[0053] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the above embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bag opening and supporting device for producing biodegradable packaging bags, comprising a base (1), characterized in that: An automatic feeding mechanism (2) is provided on the right side of the top of the base (1), a heat sealing and cutting mechanism (3) is provided on the left side of the automatic feeding mechanism (2), an adaptive bag-supporting mechanism (4) is provided on the left side of the heat sealing and cutting mechanism (3), and a material unloading and transfer mechanism (5) is provided on the left side of the base (1); The automatic feeding mechanism (2) comprises a fixed plate (20) symmetrically fixedly connected to the right side of the top wall of the base (1); a loading roller (21) is rotatably mounted on the inner side of the fixed plate (20); a packaging film (22) is sleeved on the outer side of the loading roller (21); a plurality of fixed frames (23) are equidistantly fixedly connected to the front and rear side walls of the base (1); a feeding roller (25) is rotatably mounted inside each of the fixed frames (23); a motor (24) is provided on the outer side of the outermost fixed frame (23); an output end of the motor (24) is fixedly connected to the side wall of the feeding roller (25); a limiting plate (26) is symmetrically provided on the left side of the feeding roller (25); and the limiting plates (26) are fixedly connected to the top wall of the base (1).

2. The bag opening and holding device for producing biodegradable packaging bags according to claim 1, characterized in that: The heat-sealing cutting mechanism (3) comprises a connecting rod (30) fixedly connected to the front and rear side walls of the base (1), the top of the connecting rod (30) is fixedly connected to a cylinder (31), the bottom of the cylinder (31) is slidably mounted with a pneumatic slider (32), and a transverse guide rail (33) is fixedly connected between adjacent pneumatic sliders (32).

3. The bag opening and holding device for producing biodegradable packaging bags according to claim 2, characterized in that: A slide bar (35) is fixedly installed at the bottom of the cylinder (31), and the pneumatic slider (32) is slidably sleeved on the slide bar (35). A reset spring (36) is fixedly connected to the bottom wall of the pneumatic slider (32), and the reset spring (36) is sleeved on the outer side of the slide bar (35). Conductive contacts (37) are symmetrically fixedly connected to the left and right sides of the bottom wall of the pneumatic slider (32), and a conductive seat (38) is provided below the conductive contact (37), and the conductive seat (38) is fixedly connected to the base (1).

4. The bag opening and holding device for producing biodegradable packaging bags according to claim 2, characterized in that: A cutting groove (34) is provided on the top wall of the base (1) and just below the transverse guide rail (33); a cutting knife (39) is fixedly connected to the center of the bottom wall of the transverse guide rail (33); hot pressing strips (310) are fixedly connected to the left and right sides of the bottom wall of the transverse guide rail (33); the hot pressing strips (310) are symmetrically arranged on both sides of the cutting knife (39); and the cutting knife (39) and the cutting groove (34) are located on a straight line in the same vertical direction.

5. The bag opening and holding device for producing biodegradable packaging bags according to claim 3, characterized in that: The adaptive bag-supporting mechanism (4) comprises a connecting arm (40) fixedly connected to the front side wall of the base (1); the top and bottom of the connecting arm (40) are fixedly connected to a driving sleeve (41); an elliptical limit frame (42) is slidably mounted inside the driving sleeve (41) along the longitudinal direction; oblique rods (43) are symmetrically fixedly connected to the two sides of the bottom of the elliptical limit frame (42); a longitudinal rod (45) is slidably mounted at the center of the bottom wall of the elliptical limit frame (42); and the bottom ends of the oblique rod (43) and the longitudinal rod (45) are fixedly connected to bag-supporting suction cups (44).

6. The bag opening and holding device for producing biodegradable packaging bags according to claim 5, characterized in that: The adaptive bag-supporting mechanism (4) further comprises a first electromagnet (401) fixedly connected to the center of the connecting arm (40), the top and bottom of the first electromagnet (401) are fixedly connected to a first spring (402), the other end of the first spring (402) is fixedly connected to a magnetic support rod (403), the magnetic support rod (403) extends through the interior of the driving sleeve (41), and the end of the magnetic support rod (403) is fixedly connected to the side wall of the elliptical limiting frame (42).

7. The bag opening and holding device for producing biodegradable packaging bags according to claim 6, characterized in that: An elastic airbag (46) is fixedly connected inside the elliptical limiting frame (42), a second electromagnet (47) is fixedly connected to the inner top of the elastic airbag (46), a second spring (48) is fixedly connected to the bottom of the second electromagnet (47), and the bottom end of the second spring (48) is fixedly connected to the longitudinal rod (45).

8. The bag opening and holding device for producing biodegradable packaging bags according to claim 6, characterized in that: A bag-supporting groove (27) is provided on the top of the base (1) in a transverse direction, the bag-supporting suction cup (44) is located inside the bag-supporting groove (27), the elliptical side wall of the elliptical limiting frame (42) is configured to be made of a flexible material, and the first electromagnet (401) and the second electromagnet (47) are both electrically connected to the conductive contact sheet (37) and the conductive seat (38).

9. The bag opening and holding device for producing biodegradable packaging bags according to claim 1, characterized in that: The material unloading and transfer mechanism (5) comprises a driving seat (50) fixedly connected to the left side wall of the base (1); a multi-axis mechanical arm (51) is rotatably mounted on the top of the driving seat (50); a material unloading suction cup (52) is rotatably mounted on the bottom of the multi-axis mechanical arm (51); and a loading frame (53) is fixedly connected to the rear side wall of the base (1).

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