A nozzle welding apparatus for a nozzle package

Abstract

The application discloses a welding nozzle equipment for a suction nozzle packaging bag, comprising a rack and a bag taking device, a nozzle feeding device, a bag opening conveying device, a nozzle welding device, a turnover bag pushing device and a bag collecting device arranged on the rack. The nozzle feeding device is used for efficiently pushing the suction nozzle into the bag body in a straight line. The distance between the bag bodies is adjusted by a distance changing transverse moving device connected behind the bag opening conveying device and the turnover bag pushing device. The horizontally conveyed bag body is turned into a vertical posture and is pushed into the bag collecting device. The nozzle feeding device is more simple and efficient. The welding mode of the straight line pushing of the suction nozzle is used to improve the combination precision of the suction nozzle and the bag body, improve the yield of the nozzle welding process, and realize the efficient collection of the bag body by combining the subsequent turnover bag pushing device and the bag collecting device. The nozzle welding equipment has the advantages of simplicity, practicality, high production efficiency, high nozzle precision and high yield.

Description

Technical Field

[0001] This invention relates to the field of packaging bag production equipment, and more particularly to a nozzle welding device for a spout packaging bag. Background Technology

[0002] In the food and pharmaceutical packaging industry, spout packaging bags have a very broad market demand. A spout packaging bag is usually composed of a spout and a bag body. Compared with the production of other packaging products, there is a process of welding the spout to the bag body, which is usually completed by spout welding equipment.

[0003] Traditional nozzle welding machines typically require four steps: bag taking, nozzle feeding, welding, and bag collection. These steps consume a lot of time, and conventional nozzle welding machines cannot perform other processes while one process is in progress, resulting in a decrease in the production efficiency of the nozzle welding machine.

[0004] To address the aforementioned issues, prior art CN109130318A discloses a spout bag production line, which can transport spouts to the first clamping position and then, through a circulation device, transport them to various welding nozzle devices set on the frame for welding, before proceeding to the subsequent unloading and bag collection process.

[0005] However, the above solution still has certain drawbacks: 1. The nozzle feeding process is too cumbersome. It requires pushing the nozzle to the second position on the turntable, then transferring it to the first position, and using a circulating conveyor to transport the nozzle to the welding device. The nozzle feeding structure is too complicated and requires multiple stations. 2. The accuracy of the welding nozzle is difficult to guarantee. The bag is vertically opened in the welding nozzle device by the bag opening device, and simultaneously welded to the bag clamped in the first position. If wear occurs during long-term use, resulting in inaccurate nozzle positioning or errors in the opening action of the bag opening device, it will lead to problems such as tilting of the nozzle and bag or insufficient depth of nozzle welding into the bag. 3. When multiple bags undergo the nozzle welding process simultaneously, during bag collection, they are prone to mutual interference due to irregular bag shapes and excessive bag volume, affecting bag collection efficiency.

[0006] To solve the above-mentioned technical problems, this solution designs a nozzle welding device for suction packaging bags. Summary of the Invention

[0007] The technical problem to be solved by the embodiments of the present invention is to solve the problems of cumbersome nozzle feeding process, inaccurate nozzle welding, and bag interference during bag collection of existing nozzle welding machines, and to provide nozzle welding equipment for suction packaging bags, including: a frame and a bag picking device, a nozzle feeding device, a bag opening and conveying device, a nozzle welding device, a flipping and pushing device, and a bag collecting device installed on the frame.

[0008] The nozzle feeding device includes a nozzle supply device and a pushing device. The pushing device includes a pushing cylinder and a nozzle gripper. The nozzle gripper receives the nozzles supplied by the nozzle supply device through an openable nozzle slot. The pushing cylinder is induced to drive the nozzle gripper.

[0009] The bag conveying device includes: a bag carrier bracket and a bag opening device. The bag carrier bracket is provided with a bag carrier station, and the bag opening device is installed on the bag carrier station to open the bag body. The bag opening device is used to open the bag body at the bag carrier station.

[0010] The nozzle assembly is located between the nozzle feeding device and the bag-carrying station.

[0011] The bag conveying device receives the bag body removed by the bag taking device, and opens the bag body onto the welding nozzle device through the bag opening device. The suction nozzle gripper pushes the suction nozzle into the opened bag body opening in a straight line through the pushing cylinder. The welding nozzle device welds the suction nozzle to the bag body. Then, the bag turning and pushing device sends the packaged bag with the welded nozzle into the bag collecting device.

[0012] The bag-retrieving device includes: a bag holder, a bag-retrieving cylinder, and a bag-retrieving suction cup.

[0013] The bag holder is mounted on the frame for placing bags, and the bag-retrieving cylinder is located below the bag holder. The bag-retrieving cylinder is connected to the bag-retrieving suction cup.

[0014] The bag-retrieving cylinder has two strokes. During the first stroke, the bag-retrieving cylinder removes the bag from the bag holder. At the same time as the bag conveying device removes the bag, the bag-retrieving cylinder causes the bag-retrieving suction cup to detach from the bag during the second stroke.

[0015] The bag-opening device includes a bag-opening cylinder and a bag-opening suction nozzle, which are installed vertically on the bag-carrying station. The bag-opening cylinder is driven by the bag-opening suction nozzle.

[0016] The bag-opening device can remove the bag from the bag-removing suction cup as the bag carrier moves horizontally, and transport it to the bag-carrying station. At the same time, the bag-opening suction nozzle is driven by the bag-opening cylinders set up above and below to open the bag.

[0017] The nozzle feeding device includes a feeding screen and a conveying slide rail. The feeding screen is connected to the conveying slide rail and can deliver the suction nozzle onto the conveying slide rail.

[0018] The end of the conveying slide rail is provided with a locking device, which includes a locking cylinder and a locking rod.

[0019] The locking cylinder is connected to the locking rod and can extend and retract the locking rod at the opening of the suction nozzle, thereby locking and restricting the suction nozzle located on the conveying slide rail, and causing the suction nozzle at the very end of the conveying slide rail to fall into the suction nozzle slot.

[0020] The pushing device further includes a slide rail mounted on the frame, and the suction nozzle gripper is slidably connected to the slide rail via a slider, thereby the pushing cylinder can drive the suction nozzle gripper to perform linear reciprocating motion along the slide rail.

[0021] It also includes a variable-distance lateral movement device, which comprises: a variable-distance lateral movement platform, a first suction bag device, a lateral movement slider, and a second suction bag device.

[0022] The variable-pitch lateral moving platform is connected to the end of the bag carrier and can move laterally back and forth with the bag carrier. One end of the variable-pitch lateral moving platform is connected to a first bag suction device. The lateral moving slider is slidably disposed on the variable-pitch lateral moving platform, and the second bag suction device is connected below the lateral moving slider.

[0023] The bag-pushing device includes: a bag-feeding base, a flipping bracket, a flipping cylinder, and a docking conveyor.

[0024] The flipping bracket is rotatably mounted on the bag feeding base. The flipping bracket receives the packaging bags transported by the bag conveying device. The flipping cylinder drives the flipping bracket to rotate through the linkage rod, so that the suction nozzle of the packaging bag falls into the bag pushing output groove of the docking conveyor seat. The bag feeding base is provided with a bag pushing mechanism on both sides corresponding to the bag pushing output groove.

[0025] The bag pushing mechanism includes a bag pushing cylinder and a bag pushing rod. The bag pushing cylinder is connected to the bag pushing rod, so that the bag pushing rod can push the packaging bag and make it enter the bag collecting device along the bag pushing output groove.

[0026] The bag collecting device includes: a bag collecting bracket, a first material trough, a second material trough, and a material trough output device.

[0027] The bag collection bracket is provided with a filling station and a dropping trough. Several first material troughs are stacked on the dropping trough. The second material trough is installed on the filling station and is aligned and connected with the bag pushing output trough. Thus, the second material trough can receive and collect the packaging bags output by the flipping and pushing bag device, and output the second material trough through the material trough output device.

[0028] The material trough output device includes: an output platform, a trough-moving cylinder, and a trough-clamping device.

[0029] The output platform is connected to the slot-shifting cylinder, and the slot-clamping device, which can move horizontally, is driven by the slot-shifting cylinder.

[0030] The clamping device is connected to the material trough clamping plate by a clamping cylinder. The material trough clamping plate can clamp the first material trough located at the dropping position and the second material trough located at the filling position. Driven by the shifting cylinder, the second material trough filled with packaging bags is output and the first material trough at the dropping position is transferred to the filling position.

[0031] The welding nozzle device includes an upper heat sealing element and a lower heat sealing element, which are connected by an upper heat sealing cylinder and a lower heat sealing cylinder respectively, so that the upper heat sealing element and the lower heat sealing element can perform a heat sealing action.

[0032] The following are the beneficial effects of implementing this invention: 1. The nozzle feeding device is simplified and efficient. The nozzle feeding device of this solution can directly transport the suction nozzles on the feeding screen plate along the conveying slide rail to the suction nozzle gripper, and then push them linearly into the bag body for welding. Compared with the existing solution that transports the suction nozzles to the second clamping position and then to the welding nozzle device for welding through the first clamping position, the nozzle feeding device is more simplified and efficient. 2. The welding of the suction nozzles can be more precise. The suction nozzles are directly pushed into the bag opening along the slide rail by the pushing cylinder, resulting in more precise docking. At the same time, the pushing stroke of the pushing cylinder can be adjusted to ensure that the depth of the suction nozzle pushed into the bag body is accurate. Moreover, the suction nozzle gripper, welding nozzle device, and bag opening device are aligned in a straight line, ensuring that the suction nozzle can be pushed into the precise position of the bag body, avoiding tilting between the suction nozzle and the bag body. 3. The bag collection and conveying are achieved through the variable-pitch transverse movement device, the flipping bag feeding device, and the bag collecting device. In particular, the variable-pitch transverse movement device can adjust the spacing between the bags, avoiding the problem of multiple bags affecting each other during the conveying process into the bag collecting device due to some bags being too large or irregular. This makes the equipment more versatile and suitable for the welding nozzle process of various types of bags. Attached Figure Description

[0033] Figure 1 This is a perspective view of the present invention;

[0034] Figure 2 This is a top view of the present invention;

[0035] Figure 3 This is a schematic diagram of the bag-removing device of the present invention;

[0036] Figure 4 This is a side view of the nozzle device of the present invention;

[0037] Figure 5 This is a schematic diagram of the nozzle feeding device of the present invention from a rear view.

[0038] Figure 6 This is a schematic diagram of the suction nozzle gripper and locking device of the present invention;

[0039] Figure 7 This is a schematic diagram of the bag conveying device of the present invention;

[0040] Figure 8 This is a schematic diagram of the welding nozzle device of the present invention;

[0041] Figure 9 This is a schematic diagram of the variable pitch lateral movement device of the present invention;

[0042] Figure 10 This is a schematic diagram of the flipping and pushing bag device of the present invention;

[0043] Figure 11 This is a schematic diagram of the flipping and pushing bag device of the present invention after flipping;

[0044] Figure 12 This is a schematic diagram of the bag collection device of the present invention;

[0045] Figure 13 This is a schematic diagram of the feed trough output device of the present invention. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0047] like Figures 1-13 As shown, a nozzle welding device for a spout packaging bag includes: a frame 1 and a bag picking device 2, a nozzle feeding device 3, a bag opening and conveying device 4, a nozzle welding device 5, a flipping and pushing device 6, and a bag collecting device 7, all mounted on the frame.

[0048] The nozzle feeding device 3 includes a nozzle supply device and a pushing device 33. The feeding screen 31 is connected to the conveying slide rail 32 and can deliver the nozzles onto the conveying slide rail 32. The pushing device 33 includes a pushing cylinder 331 and a nozzle gripper 332. The nozzle gripper 332 has an openable and closable nozzle slot. The nozzle slot receives the nozzles conveyed by the conveying slide rail 32. The pushing cylinder 331 is operatively connected to the nozzle gripper 332.

[0049] The bag conveying device 4 includes a bag carrier 41 and a bag opening device 42. The bag carrier 41 is provided with a bag loading station, and the bag opening device 42 for opening the bag is installed on the bag loading station. The bag opening device 42 can move horizontally back and forth with the bag carrier 41 and open the bag at the bag loading station.

[0050] The welding nozzle device 5 is located between the nozzle feeding device 3 and the bag carrying station.

[0051] The bag-flipping and pushing device 6 is used to receive the packaging bags transported by the bag conveying device 4, flip the packaging bags and push them into the bag collecting device 7.

[0052] The bag conveying device 4 receives the bag body removed by the bag taking device 2, and opens the bag body onto the welding nozzle device 5 through the bag opening device 42. The suction nozzle gripper 332 pushes the suction nozzle into the opening of the bag body in a straight line through the pushing cylinder 331, and completes the nozzle welding through the nozzle welding device 5. The flipping and pushing device 6 sends the packaged bag with the completed nozzle welding into the bag collecting device 7.

[0053] To better illustrate the specific implementation of this solution, the following will describe the entire welding process of the welding nozzle equipment, and introduce it according to the six steps of bag picking, nozzle feeding, nozzle welding, distance change, bag flipping and pushing, and bag collection, and the corresponding implementation device.

[0054] The bag-removal process and corresponding bag-removal device:

[0055] like Figure 3 As shown, the bag-retrieving device 2 includes: a bag holder 21, a bag-retrieving cylinder 22, and a bag-retrieving suction cup 23.

[0056] The bag holder 21 is mounted on the frame 1 for placing bags. The bag retrieval cylinder 22 is located below the bag holder 21 and is connected to the bag retrieval suction cup 23.

[0057] It should be noted that the bag-removing cylinder 22 has two strokes. During the first stroke, the bag-removing cylinder 22 removes the bag from the bag holder 21. At the same time as the bag conveying device 4 removes the bag, the bag-removing cylinder 22 causes the bag-removing suction cup 23 to detach from the bag through the second stroke.

[0058] The nozzle feeding process and nozzle feeding device:

[0059] like Figure 4 , Figure 5 As shown, the nozzle feeding device 3 includes a nozzle supply device and a pushing device 33. The nozzle supply device includes a feeding screen 31 and a conveying slide rail 32. The feeding screen 31 is connected to the conveying slide rail 32 and can deliver the nozzle to the conveying slide rail 32.

[0060] The pushing device 33 includes a pushing cylinder 331 and a suction gripper 332. The suction gripper 332 has an openable suction slot, which receives the suction nozzle conveyed by the conveying slide rail 32. The pushing cylinder 331 is operatively connected to the suction gripper 332.

[0061] Specifically, the end of the conveying slide rail 32 is provided with a locking device 321, which includes a locking cylinder 3211 and a locking rod 3212.

[0062] The locking cylinder 3211 is connected to the locking rod 3212 and can extend and retract the locking rod 3212 to the opening of the suction nozzle, thereby locking and restricting the suction nozzle located on the conveying slide rail 32, and causing the suction nozzle at the end of the conveying slide rail 32 to fall into the suction nozzle slot.

[0063] Specifically, the pushing device 33 also includes a slide rail 333 disposed on the frame, and the suction nozzle gripper 332 is slidably connected to the slide rail 333 via a slider, thereby the pushing cylinder 331 can drive the suction nozzle gripper 332 to perform linear reciprocating motion along the slide rail 333.

[0064] Reference Figure 6 In this solution, the suction nozzle gripper 332 is opened and closed by the clamping cylinder 334, so that the suction nozzle slot can receive the suction nozzle from the conveying slide rail when the suction nozzle gripper is open, and clamp and fix the suction nozzle when it is closed.

[0065] Compared to existing solutions, the nozzle feeding device in this solution is more streamlined. The nozzle only needs to enter the nozzle slot of the nozzle gripper 332 along the conveyor slide rail 32, and is then pushed linearly to the bag opening position by the push cylinder 331, without the need for an extra nozzle clamping structure. At the same time, the linear push of the nozzle into the bag body, compared to the existing technology of fixing the nozzle and then using a bag opening device to open the bag body and control the bag body to accurately fit the nozzle, can better control the depth and accuracy of the nozzle welding to the bag body. This makes the welding of the nozzle and the bag body less prone to tilting and insufficient depth, and can greatly improve the yield of the nozzle welding process.

[0066] Bag conveying process and bag conveying device:

[0067] like Figure 7 As shown, the bag conveying device includes a bag carrier 41 and a bag opening device 42. The bag carrier 41 is reciprocally mounted on the frame 1 via a motor and a belt. The bag carrier 41 is provided with a bag loading station. The bag opening device 42 for opening the bag is installed on the bag loading station. The bag opening device 42 can reciprocate horizontally with the bag carrier 41.

[0068] Specifically, the bag-opening device 42 includes a bag-opening cylinder and a bag-opening suction nozzle installed vertically on the bag-carrying station, with the bag-opening cylinder being driven by the bag-opening suction nozzle.

[0069] The bag-opening device 42 can remove the bag from the bag-removing suction cup 23 and transport it to the bag-carrying station as the bag-carrying bracket 41 moves horizontally. At the same time, the bag-opening suction nozzle is driven by the bag-opening cylinders 421 arranged vertically to open the bag.

[0070] The bag carrier 41 of this solution has multiple bag-carrying stations, and each bag-carrying station is equipped with a bag-opening device 42 positioned vertically. When the bag carrier 41 moves horizontally, the bag-opening device 42 near the bag-retrieving device will pick up the bag placed on the bag-retrieving suction cup 23 during the horizontal movement and place it on the bag-carrying station after the bag carrier 41 is horizontally moved and reset. At the same time, the lower bag-opening device 42 will attract the lower part of the bag, so that the bag is opened on the bag-carrying station. Through this reciprocating movement, the bag can be heat-sealed multiple times by multiple welding nozzle devices until the bag is transported to the end of the bag carrier 41.

[0071] The bag-opening cylinder also has two strokes, which can be achieved by two cylinders or an existing dual-stage cylinder. In the first stroke, it can control the bag-opening suction cup to adsorb the bag and open it. The second stroke is used to allow the bag-opening suction cup to detach from the bag when the suction device of the next bag-opening device picks up the bag and delivers it. This allows the bag-opening device 42 to detach from the bag at the same time when the next bag-opening device is about to pick up and take away the bag.

[0072] Compared to existing solutions, the bag opening device 42 in this solution allows the bag to be opened horizontally and placed on the bag carrier with the opening facing the welding nozzle device 5 and the feeding nozzle device 3. It can also open and weld multiple bags simultaneously. Compared to traditional solutions, the welding nozzle efficiency is higher. The bag is fixed open and connected to the bag by the feeding nozzle device, which also makes the connection accuracy between the bag and the suction nozzle higher.

[0073] In this embodiment, the bag carrier 41 is equipped with a total of ten sets of bag-opening devices 42 arranged vertically to form ten bag-carrying stations. Two adjacent bag-carrying stations are considered as a group. When two bags are fed from the bag-removing suction cup into the first group of bag-carrying stations, they are welded by the nozzle feeding device 3 and the nozzle welding device 5. Afterwards, as the bag carrier 41 moves back and forth, the bags pass through the subsequent bag-carrying stations in pairs and are heat-sealed multiple times in the subsequent multiple sets of nozzle welding devices to ensure the stable connection of the nozzles.

[0074] Welding nozzle process and corresponding welding nozzle equipment:

[0075] like Figure 8As shown, the welding nozzle device 5 includes an upper heat sealing element 51 and a lower heat sealing element 52. The upper heat sealing element 51 and the lower heat sealing element 52 are respectively driven and connected by an upper heat sealing cylinder 53 and a lower heat sealing cylinder 54, so that the upper heat sealing element 51 and the lower heat sealing element 52 can perform a mating heat sealing action.

[0076] It should be noted that the welding nozzle device 5 is set between the bag-carrying station of the bag conveying device 4 and the nozzle feeding device 3, so that the suction nozzle gripper and the bag-carrying station are in a straight line. Therefore, when the push cylinder pushes the suction nozzle on the suction nozzle gripper into the opening of the bag body in a straight line, the docking position is more accurate, and the welding depth between the suction nozzle and the bag body can be precisely controlled by adjusting the movement stroke of the push cylinder.

[0077] Variable pitch traverse process and variable pitch traverse device:

[0078] like Figure 9 As shown, it also has a variable-pitch lateral movement device 8, which includes: a variable-pitch lateral movement platform 81, a first suction bag device 82, a lateral movement slider 83, and a second suction bag device 84.

[0079] The variable-pitch lateral moving platform 81 is connected to the end of the bag carrier 41 and can move laterally back and forth with the bag carrier 41. One end of the variable-pitch lateral moving platform 81 is connected to a first bag suction device 82. The lateral moving slider 83 is slidably disposed on the variable-pitch lateral moving platform 81. The second bag suction device 84 is connected below the lateral moving slider 83.

[0080] The first suction bag device 82 and the second suction bag device 84 both consist of a cylinder and a suction cup, which are used to suck up the bag. Then, as the variable pitch transverse platform 81 moves laterally with the bag carrier 41, the transverse slider 83 slides laterally in sync, thereby adjusting the distance between the two bags.

[0081] Compared to traditional welding nozzle machines, this solution adds a variable-pitch transverse movement device 8 to adjust the spacing between bags, avoiding interference between the welded packaging bags after they enter the bag collection device due to excessively large bags or irregular bag shapes.

[0082] The bag-turning and pushing process and the bag-turning and pushing device:

[0083] like Figure 10 , Figure 11 As shown, the flipping and pushing bag device 6 includes: a bag feeding base 61, a flipping bracket 62, a flipping cylinder 63, and a docking conveyor seat 64.

[0084] The flipping bracket 62 is rotatably mounted on the bag feeding base 61. The flipping bracket 62 receives the packaging bags transported by the bag conveying device 4. The flipping cylinder 63 drives the flipping bracket 62 to rotate through the linkage rod 631, so that the suction nozzle of the packaging bag falls into the bag pushing output groove 641 of the docking conveyor seat 64. The bag feeding base 61 is provided with a bag pushing mechanism 65 on both sides corresponding to the bag pushing output groove 641.

[0085] More preferably, the flipping bracket 62 includes a flipping component 621 and a bag-holding platform 622. The flipping component is rotatably hinged to the bag-feeding base 61 via a pivot. The bag-holding platform 622 is connected above the flipping component 621. The bag-holding platform 622 is provided with suction cups that can adsorb the packaging bag.

[0086] The bag pushing mechanism 65 includes a bag pushing cylinder 651 and a bag pushing rod 652. The bag pushing cylinder 651 is connected to the bag pushing rod 652, so that the bag pushing rod 652 can push the packaging bag and make it enter the bag collecting device 7 along the bag pushing output groove 641.

[0087] The flipping and pushing bag device can flip the horizontally placed packaging bag into a vertical position and push it into the material trough of the bag collecting device along the pushing bag output groove 641.

[0088] Bag collection process and bag collection device

[0089] like Figure 12 As shown, the bag collecting device 7 includes: a bag collecting bracket 71, a first material trough 72, a second material trough 73, and a material trough output device 74.

[0090] The bag collecting bracket 71 is located on one side of the machine frame. The bag collecting bracket 71 is provided with a filling station and a dropping trough 711. Several first material troughs 72 are stacked on the dropping trough 711. The second material trough 73 is installed on the filling station and is aligned and connected with the bag pushing output trough 641. Thus, the second material trough 73 can receive and collect the packaging bags output by the flipping bag pushing device 6 and output the second material trough 73 through the material trough output device 74.

[0091] like Figure 13 As shown, the material trough output device 74 includes: an output platform 741, a trough-moving cylinder 742, and a trough-clamping device 743.

[0092] The output platform 741 is connected to the slot-shifting cylinder 742, and the slot-clamping device 743, which can move horizontally, is driven by the slot-shifting cylinder 742.

[0093] The clamping device 743 is connected to the material trough clamping plate 7432 via the clamping cylinder 7431. The material trough clamping plate 7432 can clamp the first material trough 72 located on the dropping position 711 and the second material trough 73 located on the filling position. Driven by the shifting cylinder 742, the second material trough 73 filled with packaging bags is output and the first material trough 72 on the dropping position 711 is transferred to the filling position.

[0094] This bag collection device can collect the packaging bags finished by the welding nozzle. At the same time, when the second material trough is full of packaging bags, it can be output through the material trough output device. During the process, the first material trough stacked in the drop position is dragged to the filling station.

[0095] One point needs to be added: the filling station in this solution is isolated by two swing rods 744 and a clamping cylinder 745 that drives the swing rods to swing. The swing rods 744 can change from a horizontal to a vertical position. The distance between the two swing rods in the vertical position is used to limit the filling station of the second material trough 73. During the process of dragging the first material trough 72 to the second material trough, the two swing rods 744 are controlled to be in a horizontal position. This setting is to avoid the existence of a fixed structure between the dropping position and the filling station, so that the first material trough cannot be clamped and dragged from the dropping position to the filling station.

[0096] Of course, the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All modifications made according to the spirit and essence of the main technical solution of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A nozzle welding device for a spout packaging bag, characterized in that, include: The frame (1) and the bag picking device (2), the spout feeding device (3), the bag opening conveying device (4), the spout welding device (5), the bag turning and pushing device (6) and the bag collecting device (7) installed on the frame. The nozzle feeding device (3) includes a nozzle supply device and a pushing device (33). The nozzle supply device includes a feeding screen (31) and a conveying slide rail (32). The feeding screen (31) is connected to the conveying slide rail and can deliver the nozzle onto the conveying slide rail (32). The end of the conveying slide rail (32) is provided with a locking device (321) for controlling the delivery of the nozzle. The locking device (321) includes a locking cylinder (3211) and a locking rod (3212). The locking cylinder (3211) is driven by the... The locking rod (3212) can extend and retract within the opening of the suction nozzle, thereby locking and restricting the suction nozzle located on the conveying slide rail (32), and causing the suction nozzle at the very end of the conveying slide rail (32) to fall into the suction nozzle slot. The pushing device (33) includes: a pushing cylinder (331) and a suction nozzle gripper (332). The suction nozzle gripper (332) receives the suction nozzle conveyed by the feeding device through the openable suction nozzle slot. The pushing cylinder (331) is connected to the suction nozzle gripper (332) in a driving manner. The bag conveying device (4) includes: a bag support (41) and a bag opening device (42). The bag support (41) is provided with several bag-carrying stations. The bag opening device (42) is installed on the bag-carrying stations. The bag opening device (42) can make the bag open horizontally on the bag support and face the welding nozzle device (5) and the feeding nozzle device (3). The bag opening device (42) can move horizontally back and forth with the bag support (41), so that the bag is heat-sealed multiple times by multiple welding nozzle devices (5) until the bag is conveyed to the end of the bag support (41). During the delivery process, the bag opening device (42) can be detached from the bag when the next bag opening device absorbs and carries away the bag through the two-stage movement stroke of the bag opening cylinder. The end of the bag carrier (41) is connected to a variable distance transverse movement device (8) for adjusting the spacing between packaging bags. The variable distance transverse movement device (8) includes: a variable distance transverse movement platform (81), a first bag suction device (82), a transverse movement slider (83), and a second bag suction device (84). The variable distance transverse movement platform (81) is connected to the end of the bag carrier (41) and can move laterally back and forth with the bag carrier (41). One end of the variable distance transverse movement platform (81) is connected to the first bag suction device (82). The transverse movement slider (83) is slidably disposed on the variable distance transverse movement platform (81). The second bag suction device (84) is connected below the transverse movement slider (83). A welding nozzle device (5) is disposed between the nozzle feeding device (3) and the bag-carrying station; The bag conveying device (4) receives the bag body conveyed by the bag taking device (2) and opens the bag body at the bag carrying station through the bag opening device (42). The suction mouth gripper (332) pushes the suction mouth into the opening of the bag body in a straight line through the pushing cylinder (331). The welding mouth device (5) welds the suction mouth onto the bag body. The flipping and pushing device (6) sends the packaged bag with the welded mouth into the bag collecting device (7). The bag collecting device includes: a bag collecting bracket (71), a first material trough (72), a second material trough (73), and a material trough output device (74). The bag collecting bracket (71) is provided with a filling station and a dropping station (711). The filling station holds the second material trough by a swinging rod (744). The second material trough (73) is aligned and connected with the pushing output slot (641) of the flipping pushing bag device (6) and receives the packaging bags output by the flipping pushing bag device (6). When the second material trough (73) is filled with packaging bags, the swinging rod (744) releases the second material trough (73) and the second material trough (73) can be ejected through the material trough output device (74). At the same time, the first material trough (72) stacked on the dropping station is transferred to the filling station.

2. The welding device for a suction bag according to claim 1, characterized in that, The bag-retrieving device (2) includes: a bag holder (21), a bag-retrieving cylinder (22), and a bag-retrieving suction cup (23); The bag holder (21) is mounted on the frame (1) for placing bags. The bag-retrieving cylinder (22) is located below the bag holder (21) and is connected to the bag-retrieving suction cup (23). The bag-removing cylinder (22) has two strokes. During the first stroke, the bag-removing cylinder (22) removes the bag from the bag holder (21). At the same time as the bag conveying device (4) removes the bag, the bag-removing cylinder (22) causes the bag-removing suction cup (23) to detach from the bag through the second stroke.

3. The welding nozzle equipment for a suction bag according to claim 2, characterized in that, The bag-opening device (42) includes a bag-opening cylinder and a bag-opening suction nozzle installed vertically on the bag-carrying station, and the bag-opening cylinder is connected to the bag-opening suction nozzle in a driving manner; The bag-opening device (42) can take the bag from the bag-removing suction cup (23) and transport it to the bag-carrying station as the bag carrier bracket (41) moves horizontally. At the same time, the bag-opening suction nozzle is driven by the bag-opening cylinders set up above and below to open the bag.

4. The welding nozzle equipment for a suction bag according to claim 1, characterized in that, The pushing device (33) also includes a slide rail (333) mounted on the frame. The suction nozzle gripper (332) is slidably connected to the slide rail (333) via a slider. The pushing cylinder (331) can drive the suction nozzle gripper (332) to perform linear reciprocating motion along the slide rail (333).

5. The welding nozzle equipment for a suction bag according to claim 1, characterized in that, The bag-turning and pushing device (6) includes: a bag-feeding base (61), a turning bracket (62), a turning cylinder (63), and a docking conveyor (64). The flipping bracket (62) is rotatably mounted on the bag feeding base (61). The flipping bracket (62) receives the packaging bags transported by the bag conveying device (4). The flipping cylinder (63) drives the flipping bracket (62) to rotate through the linkage rod (631), so that the suction nozzle of the packaging bag falls into the bag pushing output groove (641) of the docking conveyor (64). The bag feeding base (61) is provided with a bag pushing mechanism (65) on both sides corresponding to the bag pushing output groove (641). The bag pushing mechanism (65) includes a bag pushing cylinder (651) and a bag pushing rod (652). The bag pushing cylinder (651) is connected to the bag pushing rod (652) so that the bag pushing rod (652) can push the packaging bag and make it enter the bag collecting device (7) along the bag pushing output groove (641).

6. The welding nozzle equipment for a suction bag according to claim 5, characterized in that, The bag collection device (7) also includes a bag collection bracket (71). The bag collection bracket (71) is provided with a filling station and a dropping trough (711). Several first material troughs (72) are stacked on the dropping trough (711). The second material trough (73) is installed on the filling station and is aligned and connected with the bag pushing output trough (641). Thus, the second material trough (73) can receive and collect the packaging bags output by the flipping bag pushing device (6) and output the second material trough (73) through the material trough output device (74).

7. The welding nozzle equipment for a suction bag according to claim 6, characterized in that, The trough output device (74) includes: an output platform (741), a trough-moving cylinder (742), and a trough-clamping device (743). The output platform (741) is connected to the slotting cylinder (742), and the slotting device (743) that can move horizontally is connected through the slotting cylinder (742). The clamping device (743) is connected to the material trough clamping plate (7432) by the clamping cylinder (7431). The material trough clamping plate (7432) can clamp the first material trough (72) located at the dropping position (711) and the second material trough (73) located at the filling position. Driven by the shifting cylinder (742), the second material trough (73) filled with packaging bags is output and the first material trough (72) on the dropping position (711) is transferred to the filling position.

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