Packaging bag valve welding machine

Abstract

The utility model discloses a packaging bag valve welding machine which comprises a machine frame, a bag supplying mechanism, a positioning mechanism, a first material moving assembly, a second material moving assembly, a bag opening mechanism, a valve feeding mechanism and a valve welding mechanism, and the machine frame is provided with a positioning station and a valve welding station side by side in the left-right direction. The bag supply mechanism is located on the front side of the positioning station. The positioning mechanism is arranged at the positioning station; the first material moving assembly is configured to suck the end, close to the bag bottom, of the packaging bag and convey the packaging bag backwards to the positioning mechanism. The bag opening mechanism is arranged at the front end of the valve welding station; the valve feeding mechanism is located on one side of the valve welding station. The welding valve mechanism comprises a welding valve driving device, a welding valve rod and a welding valve die, the welding valve rod is installed on the front side of the welding valve station, and the welding valve driving device is used for driving the welding valve rod to move front and back. According to the packaging bag valve welding machine, the problem that the lower side wall of a bag opening of a large packaging bag droops and collides with other objects in the front face can be solved, and valve welding work of the large packaging bags such as feed bags and grain bags can be completed instead of manual work.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing bag welding valve equipment, especially a packing bag welding valve machine. BACKGROUND

[0002] At present, the packing bag welding valve machine on the market usually arranges the bag storage and bag feeding mechanism, the packing bag positioning mechanism, the bag opening mechanism and the valve welding mechanism from left to right in sequence, and the packing bag welding valve machine generally holds the upper bag wall of the bag opening of the packing bag and then transports it rightward between the mechanisms, and when the valve welding mechanism welds the valve, the bag opening mechanism moves the packing bag rightward to be sleeved into the valve welding mechanism. This kind of packing bag welding valve machine is generally used for welding the breathing valve on the small packing bag of coffee, tea and other food, but the existing packing bag welding valve machine cannot be used for welding the breathing valve on the large packing bag such as feed bag and grain bag, and these large packing bags usually still need to adopt the traditional manual valve welding mode, so the valve welding efficiency is low, and the valve welding quality is unstable due to the influence of human factors such as the proficiency and working state of workers. SUMMARY

[0003] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a packing bag welding valve machine, which can replace manual work to complete the valve welding work of the large packing bag such as feed bag and grain bag, and improve the working efficiency and valve welding quality.

[0004] The packing bag welding valve machine according to the embodiment of the utility model comprises a rack, a bag feeding mechanism, a positioning mechanism for positioning the packing bag, a first material moving assembly, a second material moving assembly, a bag opening mechanism, a valve feeding mechanism and a valve welding mechanism, the rack is provided with a positioning station and a valve welding station side by side along the left-right direction, the bag feeding mechanism is located at the front side of the positioning station, the positioning mechanism is arranged at the positioning station, the first material moving assembly is arranged at the rack, wherein the bag feeding mechanism is used for feeding the packing bag to the first material moving assembly in the direction with the bag bottom facing backward, the first material moving assembly is configured to hold one end of the packing bag close to the bag bottom and convey the packing bag backward to the positioning mechanism, the second material moving assembly is arranged at the rack and is used for conveying the packing bag from the positioning station to the valve welding station, the bag opening mechanism is arranged at the front end of the valve welding station, the valve feeding mechanism is located at one side of the valve welding station, the valve welding mechanism comprises a valve welding driving device, a valve welding rod and a valve welding die, the valve welding rod is installed at the front side of the valve welding station, the rear end of the valve welding rod is provided with a placing station, the placing station is used for receiving the breathing valve supplied by the valve feeding mechanism, the valve welding driving device is used for driving the valve welding rod to move forward and backward, and the valve welding rod is used for inserting into the packing bag located at the valve welding station and cooperating with the valve welding die to weld the breathing valve on the placing station to the packing bag located at the valve welding station.

[0005] The packaging bag valve welding machine has at least the following beneficial effects: the packaging bag valve welding machine provided by the utility model, in the process of welding the breathing valve in the large packaging bag such as the feed bag and the grain bag, the bag feeding mechanism supplies the packaging bag to the first material moving assembly in the direction of the bag bottom facing backward, the subsequent packaging bag always keeps the state of the bag bottom facing backward and the bag opening facing forward, wherein, the first material moving assembly transports the packaging bag backward to the positioning mechanism through the end of the packaging bag close to the bag bottom, in this process, because the bag bottom of the packaging bag goes first, even if the lower bag wall of the packaging bag droops and contacts the components of the packaging bag valve welding machine, the components of the packaging bag valve welding machine will slide along the lower bag wall of the packaging bag relative to the packaging bag and will not be clamped, thereby avoiding the problem that the lower side wall of the bag opening of the large packaging bag droops and collides with the components such as the opening bag mechanism at the valve welding position during the process of transporting the large packaging bag to the valve welding position, the second material moving assembly transports the packaging bag from the positioning mechanism to the valve welding position in the left-right direction, in this process, because the left end or the right end of the packaging bag goes first, even if the lower bag wall of the packaging bag droops and contacts the components of the packaging bag valve welding machine, the components of the packaging bag valve welding machine will slide along the lower bag wall of the packaging bag relative to the packaging bag and will not be clamped, thereby avoiding the problem that the lower side wall of the bag opening of the large packaging bag droops and collides with the components such as the opening bag mechanism at the valve welding position during the process of transporting the large packaging bag to the valve welding position, during the process of welding the valve by the valve welding mechanism, the valve rod of the valve welding mechanism moves backward and is inserted into the large packaging bag at the valve welding position and cooperates with the valve die to weld the breathing valve on the placing position to the large packaging bag at the valve welding position, in this process, the large packaging bag does not need to move forward, effectively avoiding the situation that the lower side wall of the bag opening of the large packaging bag droops and collides with other objects during the process of welding the valve, through the above setting, the packaging bag valve welding machine provided by the utility model effectively avoids the problem that the lower side wall of the bag opening of the large packaging bag droops and collides with other objects during the process of moving and transporting the large packaging bag, thereby being capable of replacing the artificial to complete the valve welding work of the large packaging bag, improving the work efficiency and the valve welding quality.

[0006] According to some embodiments of the utility model, the bag feeding mechanism includes a first conveying device, a first baffle for abutting and limiting the bag bottom of the packaging bag, and a second baffle, the first conveying device is arranged on the rack and is configured to convey the packaging bag in the left-right direction, and the first conveying device is located on the front side of the positioning station; the first baffle is arranged between the first conveying device and the positioning station in the left-right direction; and the second baffle is arranged on the rack and is located on the right side of the first material moving assembly.

[0007] According to some embodiments of the utility model, the positioning mechanism includes second conveying device, with second conveying device mutual cooperation's flatten mechanism, for to the front and back position positioning of packaging bag first positioning assembly and for to the left and right position positioning of packaging bag second positioning assembly, second conveying device configuration is from front to back conveying packaging bag, first positioning assembly sets up in second conveying device rear end, second positioning assembly sets up between first positioning assembly and flatten mechanism, first material moving assembly is used for conveying the bag bottom of packaging bag between second conveying device and flatten mechanism.

[0008] According to some embodiments of the utility model, the first positioning assembly includes positioning crossbeam and at least one positioning baffle, the positioning crossbeam is set along the left and right directions, the positioning crossbeam is slidably installed on the rack, the positioning baffle is slidably installed on the positioning crossbeam, and the front side of the positioning baffle is used for abutting and positioning the packaging bag.

[0009] According to some embodiments of the utility model, the second conveying device includes first rotating roller and second rotating roller arranged side by side, a plurality of conveying belts are transmissionally installed between the first rotating roller and the second rotating roller, the adjacent two conveying belts have an avoiding interval extending in the front and back directions, and the lower end of the positioning baffle is inserted into one of the avoiding intervals.

[0010] According to some embodiments of the utility model, the cross section of the positioning crossbeam is rectangular, the positioning baffle is provided with a mounting hole, the upper side wall and the front and back side walls of the mounting hole are attached to the positioning crossbeam, the rear surface of the positioning baffle is provided with a mounting opening for the positioning crossbeam to enter and exit the mounting hole, the rear side wall of the mounting hole is screwed with a locking bolt, and the locking bolt abuts against the positioning crossbeam.

[0011] According to some embodiments of the utility model, the welding valve mechanism includes a moving frame installed on the rack, the welding valve driving device can drive the moving frame to slide forward and backward, the welding valve rod is installed on the moving frame, the welding valve die includes a die head and a die driving device, the die driving device is installed on the moving frame, the die head is arranged opposite to the placing station, and the die driving device is connected with the die head and can drive the die head to ascend and descend.

[0012] According to some embodiments of the utility model, the welding valve station is provided with a third conveying device, and the third conveying device is configured to be capable of conveying the packaging bag with completed welding valve rearward.

[0013] According to some embodiments of the utility model, the bag opening mechanism includes a bag opening driving device, a first adsorption device and a second adsorption device, the first adsorption device is installed at the front end of the welding valve station, the second adsorption device is located above the first adsorption device, the bag opening driving device is installed on the rack, and the bag opening driving device is connected with the second adsorption device and can drive the second adsorption device to lift.

[0014] According to some embodiments of the utility model, the third conveying device upper surface is used for supporting the packaging bag, the first adsorption device includes a bag supporting plate and a plurality of first suction nozzles, the bag supporting plate upper surface is flush with the third conveying device upper surface, a plurality of avoiding holes are formed on the bag supporting plate upper surface, and all the first suction nozzles are inserted in all the avoiding holes one by one.

[0015] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be known by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0017] Figure 1 It is a schematic view of a packaging bag welding valve machine of the utility model embodiment;

[0018] Figure 2 It is Figure 1 It is an explosion view of a packaging bag welding valve machine;

[0019] Figure 3 It is Figure 1 It is a schematic view of a bag feeding mechanism of a packaging bag welding valve machine;

[0020] Figure 4 It is Figure 1 It is a schematic view of a positioning mechanism of a packaging bag welding valve machine;

[0021] Figure 5 It is Figure 4 It is an enlarged view of A in the figure;

[0022] Figure 6 It is Figure 4 It is a schematic view of a positioning baffle of a positioning mechanism of a packaging bag welding valve machine;

[0023] Figure 7 It is Figure 1 It is a schematic view of a welding valve mechanism of a packaging bag welding valve machine;

[0024] Figure 8 It is Figure 1A schematic view of a third conveying device and a bag opening mechanism of a packaging bag welding valve machine.

[0025] Reference signs:

[0026] The rack 100, the positioning station 110, the welding valve station 120, the bag supply mechanism 200, the first conveying device 210, the first baffle 220, the second baffle 230, the positioning mechanism 300, the second conveying device 310, the first rotating roller 311, the second rotating roller 312, the conveying belt 313, the avoiding interval 314, the flattening mechanism 320, the first positioning assembly 330, the positioning crossbeam 331, the positioning baffle 332, the mounting hole 3321, the mounting port 3322, the second positioning assembly 340, the third baffle 341, the bag pushing plate 342, the bag pushing driving device 343, the first material moving assembly 400, the second material moving assembly 500, the bag opening mechanism 600, the bag opening driving device 610, the first suction device 620, the bag supporting plate 621, the avoiding hole 6211, the first suction nozzle 622, the second suction device 630, the upper valve mechanism 700, the welding valve mechanism 800, the welding valve driving device 810, the welding valve rod 820, the placing station 821, the welding valve die 830, the die head 831 and the die driving device 832, the moving frame 840, the valve unloading device 850, the valve unloading suction nozzle 851, the third conveying device 900. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present application, and cannot be understood as limiting the present application.

[0028] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application, which indicates or implies that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0029] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0030] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing, connecting should be understood broadly, and the skilled in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0031] The packaging bag valve welding machine on the market usually arranges the bag storage and feeding mechanism, the packaging bag positioning mechanism, the bag opening mechanism and the valve welding mechanism from left to right in sequence, and generally feeds the packaging bag with the bag opening wall of the bag mouth held to the right between the mechanisms, and when the valve welding mechanism welds the valve, the packaging bag is moved to the right by the bag opening mechanism and is sleeved into the valve welding mechanism. It is found through research that this packaging bag valve welding machine is generally used for welding a breathing valve on a small packaging bag for food such as coffee and tea. The small packaging bag is not easy to deform and collide with other objects in the conveying process due to its small size, but the existing packaging bag valve welding machine cannot be used for welding a breathing valve on a large packaging bag such as a feed bag and a grain bag, otherwise, the lower wall of the bag mouth of the large packaging bag is easy to deform and collide with the components of the packaging bag valve welding machine, which may cause the large packaging bag to be unable to move or damaged, and therefore, these large packaging bags usually still need to be welded with a valve in a traditional manual operation manner, which is low in welding efficiency and unstable in welding quality due to the influence of human factors such as the proficiency and working state of workers. Therefore, it is necessary to study a packaging bag valve welding machine.

[0032] Reference Figure 1 and Figure 2The packaging bag welding valve machine according to the embodiment of the utility model, including frame 100, bag supply mechanism 200, be used for positioning packaging bag positioning mechanism 300, first material moving assembly 400, second material moving assembly 500, bag opening mechanism 600, upper valve mechanism 700, welding valve mechanism 800, frame 100 is provided with positioning station 110 and welding valve station 120 along left and right direction side by side;Bag supply mechanism 200 is located the front side of positioning station 110;Positioning mechanism 300 is arranged in positioning station 110;First material moving assembly 400 is arranged in frame 100, wherein, bag supply mechanism 200 is used for supplying packaging bag to first material moving assembly 400 according to the direction of bag bottom behind, and first material moving assembly 400 is configured as suction holding packaging bag close to the end of bag bottom and conveying packaging bag to positioning mechanism 300 behind;Second material moving assembly 500 is arranged in frame 100, is used for conveying packaging bag from positioning mechanism 300 to welding valve station 120;Bag opening mechanism 600 is arranged in the front end of welding valve station 120;Upper valve mechanism 700 is located in one side of welding valve station 120;Welding valve mechanism 800 includes welding valve drive device 810, welding valve stem 820 and welding valve mould 830, welding valve stem 820 is installed in the front side of welding valve station 120, and the rear end of welding valve stem 820 is provided with placing station 821, and placing station 821 is used for receiving the breathing valve supplied by upper valve mechanism 700, and welding valve drive device 810 is used for driving welding valve stem 820 to move back and forth, and welding valve stem 820 is used for inserting into the packaging bag located in welding valve station 120 and being mutually matched with welding valve mould 830 to weld the breathing valve on placing station 821 on the packaging bag located in welding valve station 120.

[0033] The packaging bag valve welding machine provided by the utility model, in the process of welding the breather valve for large packaging bags such as feed bags and grain bags, the bag feeding mechanism 200 feeds the packaging bags to the first material moving assembly 400 in the direction with the bag bottom at the back, the subsequent packaging bags are always kept in the state with the bag bottom at the back and the bag opening at the front, wherein the first material moving assembly 400 feeds the packaging bags to the positioning mechanism 300 in the back direction by holding the end of the packaging bag close to the bag bottom, in this process, as the bag bottom of the packaging bag goes first, even if the lower bag wall of the packaging bag is drooping and contacts the components of the packaging bag valve welding machine, the components of the packaging bag valve welding machine will slide along the lower bag wall of the packaging bag relative to the packaging bag and will not be clamped, thereby the problem that the lower side wall of the bag opening of the large packaging bag is drooping and frontally collides and is clamped in the components such as the positioning mechanism 300 during the feeding of the large packaging bag to the positioning station 110 can be avoided, the second material moving assembly 500 feeds the large packaging bag from the positioning station 110 to the valve welding station 120 in the left-right direction, in this process, as the left end or the right end of the packaging bag goes first, even if the lower bag wall of the packaging bag is drooping and contacts the components of the packaging bag valve welding machine, the components of the packaging bag valve welding machine will slide along the lower bag wall of the packaging bag relative to the packaging bag and will not be clamped, thereby the problem that the lower side wall of the bag opening of the large packaging bag is drooping and frontally collides and is clamped in the components such as the bag opening mechanism 600 at the valve welding station 120 during the feeding of the large packaging bag to the valve welding station 120 can be avoided, during the valve welding process of the valve welding mechanism 800, the valve welding rod 820 of the valve welding mechanism 800 is inserted into the large packaging bag at the valve welding station 120 and cooperates with the valve welding die 830 to weld the breather valve on the placing station 821 to the large packaging bag at the valve welding station 120, in this process, the large packaging bag does not need to move forward, the situation that the lower side wall of the bag opening of the large packaging bag is drooping and frontally collides and is clamped in other objects during the valve welding process is avoided, through the above setting, the packaging bag valve welding machine provided by the utility model effectively avoids the problem that the lower side wall of the bag opening of the large packaging bag is drooping and frontally collides and is clamped in other objects during the moving and feeding process of the large packaging bag, thereby the valve welding work of the large packaging bag can be completed artificially, the work efficiency and the valve welding quality are improved.

[0034] In addition, in the packaging bag valve welding machine, the bag feeding mechanism 200, the positioning mechanism 300, the bag opening mechanism 600 and the valve welding mechanism 800 are no longer arranged along the same straight line, the total length of the packaging bag valve welding machine in the left-right direction can be effectively reduced, and the layout between the mechanisms is more compact.

[0035] In the implementation process, the above-mentioned feed bag, food bag and the like packaging bag is usually greater than 20 cm in width size and greater than 30 cm in length size, therefore, in the utility model, the packaging bag greater than 20 cm in width size and greater than 30 cm in length size is called large packaging bag. The packaging bag welding machine provided by the utility model can be used to complete the welding work of the large packaging bag greater than 20 cm in width size and greater than 30 cm in length size. Of course, the packaging bag welding machine provided by the utility model can also be used to complete the welding work of the small packaging bag not more than 20 cm in width size and not more than 30 cm in length size.

[0036] With reference to Figure 1 And Figure 3 According to some embodiments of the utility model, the bag feeding mechanism 200 comprises a first conveying device 210, a first baffle 220 for abutting and limiting the bottom of the packaging bag, and a second baffle 230. The first conveying device 210 is arranged on the rack 100 and is configured to convey the packaging bag in the left-right direction. The first conveying device 210 is located in front of the positioning station 110. The first baffle 220 is arranged between the first conveying device 210 and the positioning station 110 in the left-right direction. The second baffle 230 is arranged on the rack 100 and is located on the right side of the first material moving assembly 400 to block the packaging bag from moving to the right. Therefore, the first baffle 220, the second baffle 230 and the first conveying device 210 enclose a material groove for storing and placing the packaging bag. The material groove has two or more than two placing stations in the left-right direction. Each placing station can place the packaging bag in a stack. The bottom of each stack of packaging bags abuts against the first baffle 220. The first conveying device 210 can convey the packaging bag at each placing station to the first material moving assembly 400 for the first material moving assembly 400 to receive. With the above arrangement, the bag feeding mechanism 200 can continuously place the packaging bag without stopping the first material moving assembly 400 and other mechanisms. It can be imagined that the above-mentioned bag feeding mechanism 200 can store and place packaging bags of different widths and lengths.

[0037] With reference to Figure 1 And Figure 4According to some embodiments of the utility model, the positioning mechanism 300 includes a second conveying device 310, a flattening mechanism 320 matched with the second conveying device 310, a first positioning assembly 330 for positioning the front and rear positions of the packaging bag and a second positioning assembly 340 for positioning the left and right positions of the packaging bag, the second conveying device 310 is configured to convey the packaging bag from front to back, the first positioning assembly 330 is arranged at the rear end of the second conveying device 310, the second positioning assembly 340 is arranged between the first positioning assembly 330 and the flattening mechanism 320, and the first material moving assembly 400 is used to convey the bag bottom of the packaging bag to the space between the second conveying device 310 and the flattening mechanism 320. Thus, the first material moving assembly 400 conveys the bag bottom of the packaging bag to the space between the second conveying device 310 and the flattening mechanism 320, and the second conveying device 310 and the flattening mechanism 320 can cooperate to convey the packaging bag backward and flatten the packaging bag from the bag bottom to the bag opening at the same time, thereby effectively eliminating the deformation of the packaging bag, so that the first positioning assembly 330 and the second positioning assembly 340 can position the packaging bag, and the positioning is more accurate.

[0038] Referring to Figure 4 and Figure 5 According to some embodiments of the utility model, the first positioning assembly 330 includes a positioning cross beam 331 and at least one positioning baffle 332, the positioning cross beam 331 is arranged along the left and right directions, the positioning cross beam 331 is slidably mounted on the rack 100, and the positioning baffle 332 is slidably mounted on the positioning cross beam 331, and the front side of the positioning baffle 332 is used to abut and position the packaging bag. Among them, according to the length of the packaging bag, the positioning cross beam 331 can be moved forward and backward to adjust the distance between the positioning baffle 332 and the flattening mechanism 320, so that after positioning by the positioning mechanism 300, even if the front and rear lengths of the packaging bag are different, the positions of the bag openings of the packaging bags on the positioning station 110 are consistent, and in the specific implementation process, the position of the bag opening of the packaging bag after positioning corresponds to the position of the bag opening mechanism 600, so that after the second material moving assembly 500 moves the packaging bag to the welding valve station 120, the bag opening of the packaging bag is just moved to the bag opening mechanism 600, and the subsequent bag opening mechanism 600 can directly open the bag opening of the packaging bag without moving the packaging bag forward and backward again.

[0039] In the specific implementation process, the positioning baffle 332 can be provided with one, at this time, the position of the positioning baffle 332 can be adjusted along the positioning cross beam 331 according to the width of the packaging bag, so that the positioning baffle 332 abuts and positions the middle part of the bag bottom of the packaging bag, and the positioning accuracy is guaranteed; of course, the positioning baffle 332 can also be provided with more than two, at this time, the positions of the two positioning baffles 332 can also be adjusted according to the width of the packaging bag, so that all the positioning baffles 332 are arranged symmetrically according to the middle line of the packaging bag, and the positioning accuracy is guaranteed.

[0040] Referring to Figure 4 and Figure 5 According to some embodiments of the present application, the second conveying device 310 comprises the first rotating roller 311 and the second rotating roller 312 arranged side by side, and a plurality of conveying belts 313 drivingly installed between the first rotating roller 311 and the second rotating roller 312, and the adjacent two conveying belts 313 have an avoiding interval 314 extending along the front-rear direction, and the lower end of the positioning baffle 332 is inserted into one of the avoiding intervals 314, so that the bag bottom of the packaging bag cannot be conveyed to the position between the positioning baffle 332 and the second conveying device 310, thus avoiding the mutual interference and influence between the positioning baffle 332 and the second conveying device 310.

[0041] Referring to Figure 4 to Figure 6 According to some embodiments of the present application, the cross section of the positioning cross beam 331 is rectangular, the positioning baffle 332 is provided with a mounting hole 3321, the upper side wall and the front-rear two side walls of the mounting hole 3321 are attached to the positioning cross beam 331, the rear surface of the positioning baffle 332 is provided with a mounting opening 3322 for the positioning cross beam 331 to enter and exit the mounting hole 3321, the rear side wall of the mounting hole 3321 is screwed with a locking bolt, and the locking bolt is in abutment with the positioning cross beam 331. Through the above arrangement, the positioning baffle 332 can be conveniently installed and fixed on the positioning cross beam 331, the installation precision of the positioning baffle 332 is ensured, and the positioning baffle 332 can also be accurately adjusted in position along the positioning cross beam 331.

[0042] Referring to Figure 4 According to some embodiments of the present application, the second positioning assembly 340 comprises a third baffle 341, a bag pushing plate 342 and a bag pushing driving device 343, the third baffle 341 and the bag pushing plate 342 are arranged side by side along the left-right direction, and the second conveying device 310 is located between the third baffle 341 and the bag pushing plate 342, and the bag pushing driving device 343 can drive the bag pushing plate 342 to move towards the third baffle 341, so as to push the packaging bag against the third baffle 341 through the bag pushing plate 342, thereby completing the positioning of the packaging bag.

[0043] It can be imagined that in other embodiments, the first positioning assembly 330 and the second positioning assembly 340 described above can also be arranged in other ways, for example, the first positioning assembly 330 comprises a positioning baffle fixedly installed on the rack 100, at this time, the positioning baffle cannot adjust the front-rear position according to the front-rear length of the packaging bag, and the bag opening position of the packaging bag of different front-rear lengths is different after being positioned by the positioning mechanism 300, so the bag opening mechanism 600 is slidingly installed on the rack 100 along the front-rear direction, so that the bag opening mechanism 600 can be adjusted to the bag opening position of the packaging bag at the welding valve station 120 to perform the bag opening work.

[0044] It can be imagined that in other embodiments, the positioning mechanism 300 described above can also be arranged in other ways, for example, the second positioning assembly 340 described above can be replaced by a camera, the first positioning assembly 330 is used to preliminarily position the packaging bag, and then the camera is used to determine the installation position of the breathing valve of the packaging bag, and then the stroke of the second material moving assembly 500 is automatically adjusted according to the installation position of the breathing valve of the packaging bag, so that the packaging bag is conveyed to the welding valve station 120, and the installation position of the breathing valve of the packaging bag corresponds to the welding valve mechanism 800.

[0045] With reference to Figure 1 and Figure 7 According to some embodiments of the present application, the welding valve mechanism 800 comprises a moving frame 840 mounted on the rack 100, the welding valve driving device 810 can drive the moving frame 840 to slide forward and backward, the welding valve rod 820 is mounted on the moving frame 840, the welding valve die 830 comprises a die head 831 and a die driving device 832, the die driving device 832 is mounted on the moving frame 840, the die head 831 is arranged opposite to the placing station 821, and the die driving device 832 is connected with the die head 831 and can drive the die head 831 to ascend and descend, so that the welding valve die 830 and the welding valve rod 820 can move synchronously and always keep relative positions, facilitating the welding valve mechanism 800 to perform welding valve work on packaging bags with different breathing valve installation positions.

[0046] With reference to Figure 1 and Figure 7 According to some embodiments of the present application, the placing station 821 is arranged as a concave hole for placing the breathing valve, the moving frame 840 is provided with a valve removing device 850, the valve removing device 850 is connected with a valve removing suction nozzle 851, the valve removing device 850 is located on the upper side of the welding valve rod 820, after the welding valve rod 820 and the welding valve die 830 cooperate to weld the breathing valve on the packaging bag, the valve removing device 850 drives the valve removing suction nozzle 851 to descend, after the valve removing suction nozzle 851 holds the upper bag wall of the packaging bag, the valve removing device 850 drives the valve removing suction nozzle 851 to ascend, so that the breathing valve is separated from the concave hole.

[0047] It can be imagined that in other embodiments, the placing station 821 described above can be arranged as a positioning sliding groove extending in the front-rear direction, the opposite two side walls of the positioning sliding groove are provided with spring top beads, when the breathing valve is placed in the positioning sliding groove, the spring top beads are used to fix the breathing valve, after the welding valve is completed, the welding valve rod 820 can be directly moved to reset, and the breathing valve can be automatically separated from the positioning sliding groove, so that the valve removing device 850 described above is not required.

[0048] It can be imagined that in other embodiments, the mold driving device 832 of the valve welding mold 830 can also be fixed to the rack 100, and the breathing valve installation position of the packaging bag is adjusted and positioned by the positioning mechanism 300, so that when the second material moving assembly 500 moves the packaging bag to the valve welding station 120, the breathing valve installation position of the packaging bag is just below the valve welding mold 830, thereby the valve welding mechanism 800 can also perform valve welding work on packaging bags with different breathing valve installation positions.

[0049] With reference to Figure 8 According to some embodiments of the present application, the valve welding station 120 is provided with a third conveying device 900, which is configured to be able to convey the packaging bag with completed valve welding backward, thereby the third conveying device 900 can convey the packaging bag with completed valve welding backward away from the valve welding station 120, complete the discharging work, and avoid the front collision of the bag opening of the packaging bag with the components of the packaging bag valve welding machine.

[0050] With reference to Figure 1 and Figure 8 According to some embodiments of the present application, the bag opening mechanism 600 includes a bag opening driving device 610, a first suction device 620 and a second suction device 630, the first suction device 620 is installed at the front end of the valve welding station 120, the second suction device 630 is located above the first suction device 620, the bag opening driving device 610 is installed on the rack 100, the bag opening driving device 610 is connected with the second suction device 630 and can drive the second suction device 630 to rise and fall, then the bag opening of the packaging bag can be opened by the first suction device 620 holding and fixing the lower side wall of the bag opening of the packaging bag, and then the second suction device 630 holding and fixing the lower side wall of the bag opening of the packaging bag and rising, wherein by controlling the height of the second suction device 630 rising, the upper side wall of the bag opening of the packaging bag can be located between the valve welding mold 830 and the valve welding rod 820, avoiding the collision of the valve welding rod 820 with the upper side wall of the bag opening when the valve welding rod 820 is inserted into the packaging bag.

[0051] With reference to Figure 1 and Figure 8According to some embodiments of the utility model, third conveying device 900 is set as a belt conveying device or a roller conveying device, at this time, the upper surface of third conveying device 900 is used to support the packaging bag, first suction device 620 includes bag supporting plate 621 and a plurality of first suction nozzles 622, the upper surface of bag supporting plate 621 is flush with the upper surface of third conveying device 900, a plurality of avoiding holes are formed on the upper surface of bag supporting plate 621, all first suction nozzles 622 are correspondingly inserted into all avoiding holes, through the above setting, third conveying device 900 and bag supporting plate 621 can support the packaging bag in welding valve station 120, in the process of opening the bag, the lower side wall of the bag opening of the packaging bag can be reliably fixed on bag supporting plate 621, avoiding the position of the packaging bag from being deviated in the process of opening the bag and the process of welding the valve, in addition, third conveying device 900 can be started to unload the packaging bag after welding the valve, and the unloading is convenient and fast.

[0052] Referring to Figure 8 According to some embodiments of the utility model, second suction device 630 includes at least one second suction nozzle.

[0053] It should be noted that in other embodiments, third conveying device 900 can also be set in other ways, for example, third conveying device 900 can be set to be liftable on the upper side of welding valve station 120, when unloading is needed, third conveying device 900 is lowered to be lower than the packaging bag, and then the packaging bag is conveyed towards the back.

[0054] It should be noted that first suction device 620 and second suction device 630 can also be set in other ways, for example, the first suction nozzle and the second suction nozzle described above can be replaced by suction heads made of adhesive or other materials that have adhesion to the packaging bag.

[0055] The technical features of the above-described embodiments can be combined arbitrarily, in order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application.

[0056] The above embodiments are described in detail in combination with the drawings, but the utility model is not limited to the above embodiments, within the knowledge range of ordinary skilled in the art, various changes can be made without departing from the purpose of the utility model.

Claims

1. A valve welding machine for packaging bags, characterized in that The utility model relates to a kind of automatic packaging machine for packaging bag, including: Rack (100), positioning station (110) and welding valve station (120) are provided side by side along left and right direction; Bag supply mechanism (200) is located at the front side of the positioning station (110); Positioning mechanism (300) for positioning packaging bag is arranged in the positioning station (110); First material moving assembly (400) is arranged in the rack (100), wherein the bag supply mechanism (200) is used to supply packaging bag to the first material moving assembly (400) in the direction of bag bottom backward, and the first material moving assembly (400) is configured to hold packaging bag close to one end of bag bottom and convey packaging bag backward to the positioning mechanism (300); Second material moving assembly (500) is arranged in the rack (100), and is used to convey packaging bag from the positioning mechanism (300) to the welding valve station (120); Bag opening mechanism (600) is arranged at the front end of the welding valve station (120); Upper valve mechanism (700) is located at one side of the welding valve station (120); Welding valve mechanism (800) includes welding valve driving device (810), welding valve stem (820) and welding valve mold (830), the welding valve stem (820) is installed at the front side of the welding valve station (120), the rear end of the welding valve stem (820) is provided with placing station (821), the placing station (821) is used to receive the breathing valve supplied by the upper valve mechanism (700), the welding valve driving device (810) is used to drive the welding valve stem (820) to move back and forth, and the welding valve stem (820) is used to be inserted into packaging bag located in the welding valve station (120) and cooperated with the welding valve mold (830) to weld the breathing valve on the placing station (821) to the packaging bag located in the welding valve station (120).

2. The bag sealer of claim 1 wherein, The bag supply mechanism (200) includes: First conveying device (210) is arranged in the rack (100), and is configured to convey packaging bag along left and right direction, and the first conveying device (210) is located at the front side of the positioning station (110); First baffle (220) for abutting and limiting the bottom of packaging bag is arranged between the first conveying device (210) and the positioning station (110) along left and right direction; Second baffle (230) is arranged in the rack (100) and located at the right side of the first material moving assembly (400).

3. The bag sealer of claim 1 wherein, The positioning mechanism (300) comprises a second conveying device (310), a flattening mechanism (320) cooperating with the second conveying device (310), a first positioning assembly (330) for positioning the front and back positions of the packaging bag, and a second positioning assembly (340) for positioning the left and right positions of the packaging bag, the second conveying device (310) is configured to convey the packaging bag from front to back, the first positioning assembly (330) is arranged at the rear end of the second conveying device (310), the second positioning assembly (340) is arranged between the first positioning assembly (330) and the flattening mechanism (320), and the first material moving assembly (400) is used to convey the bag bottom of the packaging bag to the space between the second conveying device (310) and the flattening mechanism (320).

4. The bag sealer of claim 3 wherein, The first positioning assembly (330) comprises a positioning cross beam (331) and at least one positioning baffle (332), the positioning cross beam (331) is arranged in the left and right direction, the positioning cross beam (331) is slidably mounted on the rack (100), and the positioning baffle (332) is slidably mounted on the positioning cross beam (331), and the front side of the positioning baffle (332) is used for abutting and positioning the packaging bag.

5. The bag sealer of claim 4 wherein, The second conveying device (310) comprises a first rotating roller (311) and a second rotating roller (312) arranged side by side, a plurality of conveying belts (313) are drivingly mounted between the first rotating roller (311) and the second rotating roller (312), and each of the conveying belts (313) has an avoiding interval (314) extending in the front and back direction between adjacent two conveying belts (313), and the lower end of the positioning baffle (332) is inserted into one of the avoiding intervals (314).

6. The bag sealer of claim 5 wherein, The cross section of the positioning cross beam (331) is rectangular, the positioning baffle (332) is provided with a mounting hole (3321), the upper side wall and the front and back side walls of the mounting hole (3321) are attached to the positioning cross beam (331), the rear surface of the positioning baffle (332) is provided with a mounting opening (3322) for the positioning cross beam (331) to enter and exit the mounting hole (3321), the rear side wall of the mounting hole (3321) is screwed with a locking bolt, and the locking bolt abuts against the positioning cross beam (331).

7. The bag sealer of claim 1 wherein, The welding valve mechanism (800) comprises a moving frame (840) mounted on the rack (100), the welding valve driving device (810) can drive the moving frame (840) to slide forward and backward, the welding valve rod (820) is mounted on the moving frame (840), the welding valve die (830) comprises a die head (831) and a die driving device (832), the die driving device (832) is mounted on the moving frame (840), the die head (831) is arranged opposite to the placing station (821), and the die driving device (832) is connected with the die head (831) and can drive the die head (831) to ascend and descend.

8. The bag sealer of claim 1 wherein, The welding valve station (120) is provided with a third conveying device (900) configured to convey the packaging bag of the completed welding valve rearward.

9. The bag sealer of claim 8 wherein, The bag opening mechanism (600) comprises a bag opening driving device (610), a first suction device (620) and a second suction device (630). The first suction device (620) is installed at the front end of the welding valve station (120), the second suction device (630) is located above the first suction device (620), and the bag opening driving device (610) is installed on the rack (100). The bag opening driving device (610) is connected with the second suction device (630) and can drive the second suction device (630) to ascend and descend.

10. The bag sealer of claim 9 wherein, The upper surface of the third conveying device (900) is used to support the packaging bag. The first suction device (620) comprises a bag supporting plate (621) and a plurality of first suction nozzles (622). The upper surface of the bag supporting plate (621) is flush with the upper surface of the third conveying device (900). The upper surface of the bag supporting plate (621) is provided with a plurality of avoiding holes, and all the first suction nozzles (622) are correspondingly inserted into all the avoiding holes.

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