Bag feeding automatic packaging production line

Abstract

The invention discloses an automatic bag feeding packaging production line, and relates to the field of bag feeding packaging machines, the automatic bag feeding packaging production line comprises a rack, a rotary table and a machine clamping assembly, and further comprises an auxiliary exhaust mechanism which is arranged at a heat sealing station and located on a bag moving path, and the auxiliary exhaust mechanism comprises a back supporting plate, an extrusion rod piece and a force application assembly; the extrusion rod piece comprises a cross rod and an inclined rod, the inclined rod and the cross rod are arranged at an included angle, the cross rod is located at a first height position above the height of materials in the bag, and through the synergistic effect of the cross rod and the inclined rod in the auxiliary exhaust mechanism, the extrusion rod piece acts on the area above the height of the materials in the bag, redundant gas in the bag is extruded, and the residual air amount is reduced; the sealing performance and the packaging appearance flatness after heat sealing are remarkably improved, the inclination angle design of the inclined rod and the extrusion rod piece with the adjustable height can adapt to the coexistence scene of solid floating objects and liquid, the liquid is prevented from overflowing to a bag opening, meanwhile, the floating objects are pushed and pressed to the position below the liquid level, and it is ensured that the exhaust process is stable and reliable.

Description

Technical Field

[0001] The present invention relates to the technology of bag - feeding packaging machines, and more particularly to an automatic bag - feeding packaging production line. Background Art

[0002] A bag - feeding packaging machine is an automated packaging device that completes operations such as bag loading, bag opening, filling, and sealing by mechanically grasping pre - formed bags. In existing automatic bag - feeding packaging production lines, when dealing with solid - liquid mixed materials (such as the co - existence of solid fungi and liquid), during the filling process of the liquid material, it is easy to splash to the bag - mouth area, resulting in the contamination of the heat - sealing part and affecting the sealing strength. Secondly, light - weight solid fungi (such as dried mushrooms) may float on the liquid surface or remain at the bag - mouth, hindering the effective discharge of air inside the bag. In the prior art, to solve the problem of air remaining inside the bag during heat - sealing, vacuum heat - sealing or suction - type heat - sealing devices are mostly used. However, during the air - extraction process, such methods are likely to suck out the liquid material together, not only causing material waste, but also polluting the interior of the equipment and increasing the cleaning and maintenance costs. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic bag - feeding packaging production line to solve the above - mentioned deficiencies in the prior art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: An automatic bag - feeding packaging production line includes a frame and an intermittently rotating turntable. A plurality of clamping components for clamping bags are installed on the turntable, and further includes:

[0005] An auxiliary exhaust mechanism, which is arranged at the heat - sealing station and on the moving path of the bag. The auxiliary exhaust mechanism includes a back support plate, a pressing rod, and a force - applying component. The pressing rod includes a horizontally arranged cross - bar and an inclined rod installed at the end of the cross - bar. The inclined rod is arranged at an angle with the cross - bar, and the cross - bar is located at a first height position above the height of the material inside the bag.

[0006] When the turntable rotates, the bag can move between the back support plate and the pressing rod, and when moving, the force - applying component applies a force perpendicular to the back support plate to the pressing rod, so that the bag is pressed against the back support plate by the pressing rod at the first height position.

[0007] Further, the force - applying component includes a support platform. Two first guide rods are slidably connected to the inner wall of the support platform. One end of each first guide rod is fixedly connected to one side of the cross - bar. A first spring is sleeved on the first guide rod, and the elastic force of the first spring acts on the cross - bar to make the cross - bar have a tendency to approach the back support plate.

[0008] Furthermore, the auxiliary exhaust mechanism further includes a third driving member and a first driving member. The third driving member is used to drive the extrusion rod to approach or move away from the back support plate, and a gap for the bag to move is formed when it moves away from the support plate. The first driving member is used to drive the extrusion rod to move in the vertical direction.

[0009] Furthermore, the third driving member includes a push rod fixedly installed on the clamping assembly or the turntable. When the turntable rotates, the push rod first pushes the extrusion rod away from the back support plate. After the bag moves into the area of the back support plate, the push rod disengages from the extrusion rod.

[0010] Furthermore, the first driving member includes a first track plate and a first vertical rod installed below the support table. The bottom of the first vertical rod is rotatably connected to a first guide post. A first track groove is provided on one side of the first track plate, and the first guide post is slidably connected to the first track groove.

[0011] Furthermore, inclined rods are installed at both ends of the cross bar, and the inclined rods are rotatably connected to the cross bar. The two inclined rods are connected to a second driving member for driving them to rotate synchronously to approach or move away from each other.

[0012] Furthermore, the second driving member includes a second vertical rod and a second track plate. A chute for the second vertical rod to slide in the vertical direction is provided on the support table. The bottom of the second vertical rod is rotatably connected to a second guide post. A second track groove is provided on one side of the second track plate, and the second guide post is slidably connected to the second track groove. A base is installed at the top of the second vertical rod. The inner walls at both ends of the base are movably connected to sliding rods. The sliding rods can slide and rotate inside the base. One end of the sliding rod is fixedly connected to a push-pull rod, and the other end of the push-pull rod is rotatably connected to one side of the inclined rod.

[0013] Furthermore, the first track plate and the second track plate are arranged on the path where the bag moves towards the heat-sealing station. The support table is slidably installed on the moving bracket, and the moving bracket is connected to a fourth driving member. The fourth driving member is used to drive the moving bracket to reciprocally rotate around the central axis of the turntable.

[0014] Furthermore, the first track plate and the second track plate are arc-shaped, and when the moving bracket reciprocally rotates, the first guide post and the second guide post always slide on the first track groove and the second track groove respectively.

[0015] Furthermore, the fourth driving member includes a fourth motor installed on the frame. One end of the output shaft of the fourth motor is fixedly connected to a gear. A ring gear is meshed with one side of the gear. The ring gear is rotatably installed on the frame, and the axis of the ring gear coincides with the axis of the turntable. The top of the ring gear is fixedly connected to one end of the moving bracket.

[0016] Compared with the prior art, a bag-feeding automatic packaging production line provided by the present invention has the following beneficial effects:

[0017] The bag - feeding automatic packaging production line, through the collaborative action of the cross - bar and the inclined bar in the auxiliary exhaust mechanism, enables the extrusion rod to act on the area above the height of the material in the bag, expelling the excess gas in the bag and reducing the residual air volume, significantly improving the sealing performance after heat - sealing and the flatness of the packaging appearance. The inclination angle design of the inclined bar and the height - adjustable extrusion rod can adapt to the scenario where solid floating objects (such as dried mushrooms) coexist with liquid, preventing the liquid from overflowing to the bag mouth, and at the same time pushing the floating objects below the liquid surface to ensure the stability and reliability of the exhaust process and reduce the cleaning and maintenance costs. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is the overall structure schematic diagram provided by the embodiment of the present invention;

[0020] Figure 2 It is provided by the embodiment of the present invention Figure 1 partial structure schematic diagram;

[0021] Figure 3 It is the structure schematic diagram of the auxiliary exhaust mechanism provided by the embodiment of the present invention;

[0022] Figure 4 It is provided by the embodiment of the present invention Figure 3 enlarged view at A in;

[0023] Figure 5 It is provided by the embodiment of the present invention Figure 2 partial structure top view;

[0024] Figure 6 It is the schematic diagram of the auxiliary exhaust mechanism and the fourth driving member provided by the embodiment of the present invention;

[0025] Figure 7 It is the schematic diagram of a first track plate and a second track plate provided by the embodiment of the present invention;

[0026] Figure 8 It is the schematic diagram of another first track plate and a second track plate provided by the embodiment of the present invention;

[0027] Figure 9 It is provided by the embodiment of the present invention Figure 8 front view of the first track plate and the second track plate in;

[0028] Figure 10 It is the process schematic diagram when the extrusion rod moves provided by the embodiment of the present invention.

[0029] Description of the reference numerals:

[0030] 1. Bag; 2. Auxiliary exhaust mechanism; 21. Back support plate; 22. Extrusion rod; 221. Cross bar; 222. Inclined bar; 223. First height position; 224. Second height position; 23. Force application component; 231. Support table; 232. First guide rod; 233. First spring; 24. Third driving member; 241. Push rod; 25. First driving member; 251. First track plate; 252. First vertical rod; 253. First bracket; 254. First guide post; 255. First track groove; 26. Gap; 27. Second driving member; 271. Second track plate; 272. Second vertical rod; 273. Second guide post; 274. Second track groove; 275. Base; 276. Slide bar; 277. Push-pull rod; 28. Fourth driving member; 281. Fourth motor; 282. Gear; 283. Annular rack; 29. Moving bracket;

[0031] 100. Frame; 200. Bag loading and unloading station; 300. Bag opening and expanding station; 400. Material filling station; 500. Barrel material liquid filling station; 600. Heat sealing station; 700. Turntable; 800. Machine clamping assembly. Detailed implementation manners

[0032] An automatic bag feeding packaging production line includes a frame 100, a bag loading and unloading station 200, a bag opening and expanding station 300, a material filling station 400, a barrel material liquid filling station 500, a heat sealing station 600, and a turntable 700 that intermittently rotates between the stations. A plurality of machine clamping assemblies 800 for clamping the bag 1 are installed on the turntable 700;

[0033] Among them, when the production line is running, a bag bin is provided at the bag loading and unloading station 200. The packaging bags are neatly placed at the bag bin station. The bag bin suction cups individually suck the packaging bags, and the bag taking component takes the bags and delivers them to the machine clamping assembly 800 on the bag feeding turntable 700. Then, while the bag opening suction cup sucks and opens the bag mouth, the upper blowing pipe blows air into the packaging bag. The bag expanding piece opens the packaging bag and conveys it to the next station, and completes the detection of whether there is a packaging bag or whether the bag mouth is opened. If there is no packaging bag or the bag mouth is not opened, the filling station will not fill the material. Then, the material filling hopper is inserted into the packaging bag, the bag expanding piece completes the bag expansion and returns to the original station, and the material is filled into the packaging bag to complete the full-automatic or semi-automatic feeding and filling of the material. After filling the liquid material at the barrel material liquid filling station 500, it enters the heat sealing station 600 for heat sealing treatment of the bag mouth; The above description is the general process of the bag feeding packaging production line in the prior art. It is the prior art and is briefly described to facilitate those skilled in the art to better understand the technical solution of the present invention. The present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Please refer to Figures 1-10 , a bag - feeding automatic packaging production line provided by the present application further includes an auxiliary exhaust mechanism 2, which is arranged at the heat - sealing station 600 and located on the moving path of the bag 1. The auxiliary exhaust mechanism 2 includes a back support plate 21, an extrusion rod member 22, and a force - applying assembly 23. The extrusion rod member 22 includes a horizontally arranged cross - bar 221 and an inclined rod 222 installed at the end of the cross - bar 221. The inclined rod 222 is arranged at an angle with the cross - bar 221, and the cross - bar 221 is located at a first height position 223 above the height of the material in the bag 1;

[0035] When the turntable 700 rotates, the bag 1 can move between the back support plate 21 and the extrusion rod member 22, and when moving, the force - applying assembly 23 applies a force perpendicular to the back support plate 21 to the extrusion rod member 22, so that the bag 1 is pressed against the back support plate 21 by the extrusion rod member 22 at the first height position 223.

[0036] As Figure 2 and Figure 10 shown, before the bag 1 filled with materials is transported to the heat - sealing station 600 for heat - sealing, through the setting of the auxiliary exhaust mechanism 2, the bag - mouth part of the bag 1 without filled materials is displaced by the extrusion rod member 22, and most of the gas in the bag 1 is squeezed out. Thus, the amount of air in the bag after subsequent heat - sealing is reduced. Taking the heat - sealing process of one bag 1 as an example, the specific implementation scenario is as follows:

[0037] First, during the rotation of the turntable 700, the clamped bag 1 is carried through each station in turn until it moves to the station before the heat - sealing station 600. At this time, the bag 1 has been filled with materials (solid materials and liquid materials). During the rotation of the bag 1 towards the heat - sealing station 600, it enters between the extrusion rod member 22 and the back support plate 21. As the relative movement between the auxiliary exhaust mechanism 2 and the bag 1 occurs, the extrusion rod member 22 at the first height position 223 scrapes at the corresponding position of the bag 1. When scraping, the inclined rod 222 scrapes the part of the bag 1 within the range of the inclined rod 222. And under the action of the inclined - set inclined rod 222, the possible liquid in the bag 1 within this range will be scraped to below the cross - bar 221. When the cross - bar 221 moves to the middle of the bag 1, the bag 1 will discharge part of the air in the bag under the action of the extrusion rod member 22. The purpose of extruding from a position above the height of the material in the bag is to make the inner walls of the part of the bag 1 without materials closely adhere to each other as much as possible through the extrusion of the extrusion rod, so as to discharge the air in the bag, so that there is less residual air in the bag after subsequent heat - sealing;

[0038] It should be noted that the specific position of the first height position 223 can be set according to the actual situation. It is not that the closer it is to the material, the better. Since the solid material and the liquid material will expand the bag 1 inside the bag, if the first height position 223 is relatively close to the liquid level height, when the extrusion rod 22 extrudes the bag 1, the rising amplitude of the liquid level in the bag 1 will increase, easily causing the liquid to overflow above the extrusion rod 22 and even reach the edge position of the bag mouth at the heat-sealing place, affecting the heat-sealing effect. Therefore, the specific setting of the first height position 223 should be determined by the size of the bag 1, the quantity and characteristics (shape, density, etc.) of the internal liquid and solid positions during the actual production process. For example, when the solid substance in this application is various dried mushrooms, some dried mushrooms will float above the liquid surface. Sometimes, this factor also needs to be considered when setting the first height position 223. It is worth mentioning that the inclined rod 222 arranged obliquely can solve this problem. The inclined rod 222 will push some liquid (part of the liquid that may splash above the liquid surface during filling) and floating solid materials (dried mushrooms that have not absorbed the liquid and float on the liquid surface) under the cross bar 221.

[0039] In an embodiment of the present invention, the force application assembly 23 includes a support table 231. Two first guide rods 232 are slidably connected to the inner wall of the support table 231. One end of the first guide rod 232 is fixedly connected to one side of the cross bar 221. A first spring 233 is sleeved on the first guide rod 232. The elastic force of the first spring 233 acts on the cross bar 221 to make the cross bar 221 tend to be close to the back support plate 21. After the bag 1 enters between the extrusion rod 22 and the back support plate 21, the setting of the first spring 233 can adaptively adjust the extrusion force, so that the bag 1 can move to a state where it is completely extruded by the extrusion rod 22;

[0040] It should be noted that although the bag 1 has a relatively fixed posture when it is clamped by the machine clamping assembly 800, after the bag is filled with materials, certain deformation will still occur at the edge positions on the side, making it difficult for the bag 1 to enter between the extrusion rod 22 and the back support plate 21. This problem can be solved by bending the edge of the back support plate 21 by a certain angle, as Figure 5 shown.

[0041] In the above solution, considering that the force - applying component 23 needs to apply a certain force to the extrusion rod 22 initially to make the extrusion rod 22 close to the back support plate 21, this will cause a certain resistance when the bag 1 enters between the extrusion rod 22 and the back support plate 21, affecting the stability and smoothness of the movement of the bag 1. Some bags 1 with a relatively thin thickness or low toughness are also prone to problems such as twisting or arching. For this reason, a solution is provided, that is, the extrusion rod 22 can move away from the back support plate 21 to form a gap 26, and the gap 26 can be used for the bag 1 to move. When the bag 1 moves to one side of the back support plate 21, the extrusion rod 22 approaches and presses on the back support plate 21, and then the extrusion rod 22 moves downward to discharge the gas in the bag. Specifically: The auxiliary exhaust mechanism 2 further includes a third driving member 24 and a first driving member 25. The third driving member 24 is used to drive the extrusion rod 22 to approach or move away from the back support plate 21, and form a gap 26 for the bag 1 to move when moving away from the support plate. The first driving member 25 is used to drive the extrusion rod 22 to move in the vertical direction;

[0042] In an embodiment of the present invention, both the third driving member 24 and the first driving member 25 can be cylinders. The output end of the cylinder is connected to the extrusion rod 22, and its installation method and driving method are common technical means for those skilled in the art, so no specific description will be made here. Here, another example of the third driving member 24 and the first driving member 25 is provided. Specifically, the third driving member 24 includes a push rod 241 fixedly installed on the clamping component 800 or the turntable 700. When the turntable 700 rotates, the push rod 241 first pushes the extrusion rod 22 away from the back support plate 21. When the bag 1 moves into the area of the back support plate 21, the push rod 241 disengages from the extrusion rod 22, and the extrusion rod 22 presses on the surface of the bag 1 under the action of the first spring 233, as Figure 5 shown. When the turntable 700 rotates, the push rod 241 pushes the extrusion rod 22 away from the back support plate 21 before the bag 1 moves to the back support plate 21. The specific shape of the push rod 241 is determined according to the position of the back support plate 21 and the cross - bar 221 initially. The push rod 241 is L - shaped, and the end connected to the turntable 700 is higher than the back support plate 21, and the other end extends to the height position where the cross - bar 221 is located;

[0043] The first driving member 25 includes a first track plate 251 and a first vertical rod 252 installed below the support platform 231. The support platform 231 is slidably installed on the first bracket 253. The first bracket 253 is installed on the top of the frame 100. The bottom of the first vertical rod 252 is rotatably connected to a first guide post 254. A first track groove 255 is formed on one side of the first track plate 251. The first guide post 254 is slidably connected to the first track groove 255. When the first guide post 254 moves in the first track groove 255, it can drive the first vertical rod 252 to move in the vertical direction, asFigure 6 and Figure 7 As shown in Figure 7 , the first track groove 255 is inclined. The first track plate 251 is connected to an A driving member (not shown in the figure) for driving its movement. When the first track plate 251 moves, through the cooperation of the inclined first track groove 255 and the first guide post 254, the first vertical rod 252 and the support platform 231 can move in the vertical direction, thereby driving the extrusion rod 22 installed on the support platform 231 to move in the vertical direction;

[0044] In an embodiment of the present invention, inclined rods 222 are installed at both ends of the cross bar 221, and the inclined rods 222 are rotatably connected to the cross bar 221. The two inclined rods 222 are connected to a second driving member 27 for driving their synchronous rotation to approach or separate from each other;

[0045] The second driving member 27 includes a second vertical rod 272 and a second track plate 271. A chute for the second vertical rod 272 to slide in the vertical direction is formed on the support platform 231. The bottom of the second vertical rod 272 is rotatably connected to a second guide post 273. A second track groove 274 is formed on one side of the second track plate 271. The second guide post 273 is slidably connected to the second track groove 274. When the second guide post 273 moves in the second track groove 274, it can drive the second vertical rod 272 to move in the vertical direction. The second track groove 274 is inclined. The second track plate 271 is connected to a B driving member (not shown in the figure) for driving its movement. A base 275 is installed at the top of the second vertical rod 272. Both inner walls of the two ends of the base 275 are movably connected to sliding rods 276. The sliding rods 276 can slide and rotate on the inner wall of the base 275. One end of the sliding rod 276 is fixedly connected to a push-pull rod 277. The other end of the push-pull rod 277 is rotatably connected to one side of the inclined rod 222;

[0046] As Figure 7 shown, when the second track plate 271 moves, the second vertical rod 272 can move in the vertical direction. The principle is the same as that of the first track plate 251 and will not be specifically described here. It should be noted that the first track plate 251 and the second track plate 271 are installed at different height positions. When the second vertical rod 272 moves downward, it first drives the two push-pull rods 277 to move and drives the two inclined rods 222 to rotate and approach each other, and vice versa;

[0047] As Figure 10As shown, when the extrusion rod 22 presses on the surface of the bag 1 (at this time, the first height position 223 where the extrusion rod 22 is located can be at a relatively large distance higher than the liquid level height in the bag), the second vertical rod 272 first moves downward, causing the two inclined rods 222 to rotate within the width range of the bag 1. Then, the first vertical rod 252 moves downward, driving the entire cross rod 221 and the inclined rods 222 to move to the second height position 224. At this time, since there is a certain distance between the two inclined rods 222 and the edge position of the bag 1, when the cross rod 221 moves downward, it squeezes the space inside the bag and causes the gas in the bag space to flow out from the edge of the bag 1. After the extrusion rod 22 reaches the second height position 224, it drives the extrusion rod 22 to move upward. When moving, first, the second vertical rod 272 moves upward. When the second vertical rod 272 moves, it drives the two inclined rods 222 to rotate and move away from each other. The ends of the inclined rods 222 are located outside the edge of the bag 1. Then, the first vertical rod 252 moves upward, driving the entire cross rod 221 and the inclined rods 222 to move upward. The cross rod 221 and the inclined rods 222 work together to further discharge the gas in the bag 1 above the extrusion rod 22 and at the same time prevent the gas from flowing back into the bag;

[0048] In an embodiment of the present invention, the A driving member and the B driving member are general linear driving mechanisms, such as air cylinders, electric telescopic rods, or hydraulic cylinders. The first track plate 251 and the second track plate 271 are both slidably installed on the frame 100, and the first track plate 251 and the second track plate 271 are respectively driven by the A driving member and the B driving member to move to complete the above operations;

[0049] In an embodiment of the present invention, a method for synchronously driving the first track plate 251 and the second track plate 271 is provided. The first track plate 251 and the second track plate 271 are installed together and driven by the same C driving member, such as Figure 8 and Figure 9As shown, when the first track groove 255 and the second track groove 274 cooperate with the first guide post 254 and the second guide post 273 respectively, at the same unit moving distance, taking the moving states of the first vertical rod 252 and the second vertical rod 272 as examples, the second vertical rod 272 first moves downward until the inclined rods 222 rotate and approach each other, then the first vertical rod 252 and the second vertical rod 272 move downward synchronously, and then the second vertical rod 272 moves upward while the first vertical rod 252 remains at its current position to make the inclined rods 222 rotate and move away from each other, and finally both the first vertical rod 252 and the second vertical rod 272 move upward to return to the initial position. Correspondingly, the movement states of the cross rod 221 and the inclined rods 222 are as follows: when the bag 1 enters the area of the back support plate 21, the extrusion rod 22 extrudes the bag 1, then the two inclined rods 222 rotate into the area of the bag 1 driven by the second vertical rod 272, then the cross rod 221 and the inclined rods 222 move downward under the synchronous movement of the first vertical rod 252 and the second vertical rod 272, then the two inclined rods 222 rotate out of the area of the bag 1 driven by the second vertical rod 272, and finally move upward under the synchronous movement of the first vertical rod 252 and the second vertical rod 272. After that, heat sealing can be completed to finish the packaging;

[0050] In this process, only the first track plate 251 and the second track plate 271 need to move synchronously. The C driving member can be a general cylinder, electric telescopic rod or hydraulic cylinder. The first track plate 251 and the second track plate 271 are slidably mounted on the frame 100.

[0051] In an embodiment of the present invention, in addition to the above method, the first track plate 251 and the second track plate 271 can also be arranged in a cylindrical shape. The first track groove 255 and the second track groove 274 are both opened at the upper and lower ends on the circumferential side of the same cylinder. The cylinder is connected to a motor for driving it to rotate around its own axis. When the cylinder rotates, the first track groove 255 and the second track groove 274 on it rotate synchronously to achieve the same driving state as the above method, which will not be elaborated in detail here. It should be noted that in the setting method of the first track plate 251 and the second track plate 271, the cylindrical shape is relatively simple and can be understood as a columnar structure formed by bending the track plate. The specific structure is not drawn in the figure. The cylindrical setting is beneficial to reducing the space occupied by the track plate. In some cases where there are more workstations or the diameter of the turntable 700 is smaller, the problem of space interference can be effectively avoided.

[0052] In an embodiment of the present invention, another setting method of the auxiliary exhaust mechanism 2 is provided. The first track plate 251 and the second track plate 271 are arranged on the path of the bag 1 moving towards the heat sealing station 600 and fixed on the frame 100. The support table 231 slides on the moving bracket 29, and the moving bracket 29 is connected to the fourth driving member 28. The fourth driving member 28 is used to drive the moving bracket 29 to rotate reciprocally around the central axis of the turntable 700;

[0053] The first track plate 251 and the second track plate 271 are arc-shaped. When the moving support 29 reciprocally rotates, the first guide post 254 and the second guide post 273 always slide on the first track groove 255 and the second track groove 274 respectively;

[0054] The fourth driving member 28 includes a fourth motor 281 installed on the frame 100. One end of the output shaft of the fourth motor 281 is fixedly connected with a gear 282. One side of the gear 282 is meshed and connected with an annular rack 283 that is rotatably installed on the frame 100. The axis of the annular rack 283 coincides with the axis of the turntable 700. The top of the annular rack 283 is fixedly connected with one end of the moving support 29.

[0055] During specific operation, when the bag 1 moves from the previous station to the heat-sealing station 600, the first guide post 254 and the second guide post 273 are located at one end of the first track groove 255 and the second track groove 274 away from the heat-sealing station 600. The extrusion rod 22 and the back support plate 21 are provided at this position for the bag 1 to enter, so that the bag 1 enters between the extrusion rod 22 and the back support plate 21 during the movement along with the turntable 700. Then, the fourth driving member 28 drives the moving support 29 to move at the same speed as the turntable 700. During the rotation process, the first guide post 254 and the second guide post 273 move on the first track groove 255 and the second track groove 274 respectively, completing the above-mentioned movement of the first vertical rod 252 and the second vertical rod 272, and enabling the extrusion rod 22 to complete the required movement process;

[0056] It should be noted that since the turntable 700 rotates with a certain rhythm each time during packaging, and the rhythm is affected by many factors such as the number of the clamping assemblies 800 and the speed of filling materials. For the way that the first track plate 251 and the second track plate 271 are arranged on the path of the bag 1 moving towards the heat-sealing station 600, the movement of the auxiliary exhaust mechanism 2 can be completed within one rhythm. That is to say, the time of one cycle of the reciprocating movement of the moving support 29 is less than the time of one rhythm. After the heat-sealing of the bag 1 is completed at the heat-sealing station 600, when the moving support 29 drives components such as the back support plate 21 and the extrusion rod 22 away from the heat-sealing station 600, the next bag 1 is still in a state close to the heat-sealing station 600, and the distance from the heat-sealing station 600 is greater than the lengths of the first track plate 251 and the second track plate 271;

[0057] By arranging the first track plate 251 and the second track plate 271 on the path of the movement of the bag 1 towards the heat-sealing station 600, the exhaust operation of the bag 1 can be completed during the movement of the bag 1 towards the heat-sealing station 600, thereby reducing the time required for the exhaust operation from being added to the time required for the turntable 700 to rotate one beat, avoiding the extension of the rotation beat of the turntable 700 due to the exhaust time, ensuring that the production efficiency is not affected, while improving the heat-sealing quality and reducing the defective rate.

[0058] Only some exemplary embodiments of the present invention have been described by way of illustration. Undoubtedly, for those of ordinary skill in the art, various different ways can be used to modify the described embodiments without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the present invention.

Claims

1. An automatic bag-feeding packaging production line, comprising a frame and an intermittently rotating turntable, on which a plurality of clamping components for clamping bags are installed, characterized in that, It further includes: An auxiliary exhaust mechanism, which is arranged at the heat-sealing station and located on the moving path of the bag. The auxiliary exhaust mechanism includes a back support plate, an extrusion rod, and a force-applying component. The extrusion rod includes a horizontally arranged cross bar and an inclined rod installed at the end of the cross bar. The inclined rod is arranged at an angle with the cross bar, and the cross bar is located at a first height position above the height of the material in the bag; When the turntable rotates, the bag can move between the back support plate and the extrusion rod. When moving, the force-applying component applies a force perpendicular to the back support plate to the extrusion rod, so that the bag is squeezed against the back support plate by the extrusion rod at the first height position.

2. The automatic bag-feeding packaging production line according to claim 1, characterized in that, The force-applying component includes a support table. Two first guide rods are slidably connected to the inner wall of the support table. One end of the first guide rod is fixedly connected to one side of the cross bar. A first spring is sleeved on the first guide rod. The elastic force of the first spring acts on the cross bar to make the cross bar tend to approach the back support plate.

3. The automatic bag-feeding packaging production line according to claim 1, wherein, It further includes a third driving member and a first driving member. The third driving member is used to drive the extrusion rod to approach or move away from the back support plate, and form a gap for the bag to move when moving away from the support plate. The first driving member is used to drive the extrusion rod to move in the vertical direction.

4. The automatic bagging packaging production line according to claim 3, characterized in that, The third driving member includes a push rod fixedly installed on the clamping component or the turntable. When the turntable rotates, the push rod first pushes the extrusion rod away from the back support plate. When the bag moves into the area of the back support plate, the push rod disengages from the extrusion rod.

5. The automatic bag-feeding packaging production line according to claim 3, wherein The first driving member includes a first track plate and a first vertical rod installed below the support table. The bottom of the first vertical rod is rotatably connected to a first guide post. A first track groove is formed on one side of the first track plate. The first guide post is slidably connected to the first track groove.

6. The automatic bag-feeding packaging production line according to claim 1, wherein Both ends of the cross bar are installed with inclined rods, and the inclined rods are rotatably connected to the cross bar. The two inclined rods are connected to a second driving member for driving them to rotate synchronously to approach or move away from each other.

7. The automatic bagging packaging production line according to claim 6, characterized in that The second driving member includes a second vertical rod and a second track plate. A chute for the second vertical rod to slide in the vertical direction is formed on the support table. The bottom of the second vertical rod is rotatably connected to a second guide post. A second track groove is formed on one side of the second track plate. The second guide post is slidably connected to the second track groove. A base is installed at the top of the second vertical rod. Both ends of the inner wall of the base are movably connected with sliding rods. The sliding rods can slide and rotate inside the base. One end of the sliding rod is fixedly connected to a push-pull rod. The other end of the push-pull rod is rotatably connected to one side of the inclined rod.

8. A bag-feeding automatic packaging production line according to any one of claims 5-7, characterized in that, The first track plate and the second track plate are arranged on the path of the bag moving towards the heat-sealing station. The support table is slidably installed on the moving bracket. The moving bracket is connected to a fourth driving member. The fourth driving member is used to drive the moving bracket to reciprocally rotate around the central axis of the turntable.

9. The automatic bagging packaging production line according to claim 8, characterized in that, The first track plate and the second track plate are arc-shaped. When the moving bracket reciprocally rotates, the first guide post and the second guide post always slide on the first track groove and the second track groove respectively.

10. The automatic bagging packaging production line according to claim 9, characterized in that, The fourth driving member includes a fourth motor installed on the frame. One end of the output shaft of the fourth motor is fixedly connected with a gear. One side of the gear is meshed and connected with an annular rack. The annular rack is rotatably installed on the frame, and the axis of the annular rack coincides with the axis of the turntable. The top of the annular rack is fixedly connected with one end of the moving bracket.

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