Valve bag packing device

Abstract

The invention relates to the technical field of valve bag packaging, in particular to a valve bag packaging device which comprises a discharging machine, a mounting frame, a plurality of first suction cups and two bag clamping arms, the mounting frame is composed of a connecting frame and a limiting plate connected to the bottom face of the connecting frame, the limiting plate is in an arc shape, and the top of the limiting plate protrudes upwards; a through groove in the connecting frame extends downwards and penetrates through the top of the limiting plate, a moving plate is vertically and slidably inserted into the inner wall of the through groove, the first suction cups are connected to the bottom face of the moving plate, and a plurality of adsorption holes are formed in the inner wall of the limiting plate. The two sides of the bottom end of the limiting plate are connected with multiple first air pipes, and the two sides of the bottom end of the end, close to the discharging pipe, of the limiting plate are connected with second air pipes. The opening degree of a bag opening of the valve bag can be increased, the roundness of the bag opening can be improved, the valve bag can be conveniently and efficiently arranged on a discharging pipe of a discharging machine in a sleeving mode, and continuous machining is facilitated through the device.

Description

Technical Field

[0001] The invention relates to the technical field of valve bag packaging, and in particular to a valve bag packaging device. Background Art

[0002] Valve bags, as an efficient packaging method, are used for packaging powder and granular materials. The bottom of the bag is closed and there is an openable feed port on the top, which makes the loading process convenient and forms a completely closed system after packaging, effectively protecting the material from the external environment. Therefore, valve bags are very popular in the packaging of materials in many industries such as chemical, construction, and food.

[0003] Reference is made to the Chinese patent document with the authorization announcement number CN217598982U, the announcement date of October 18, 2022, and the name of which is a valve bag automatic bagging device. A feeding pipe is installed at the bottom of the feeding table of the feeding machine, and a suction plate is installed at the bottom of the feeding pipe. Two hollow thin plates are provided at both ends of the bottom of the suction plate. Suction holes are provided on the inner sides of the two thin plates on the suction plate. When in use, the suction hole on one thin plate first sucks one side of the bag opening of the outermost valve bag, and then the suction hole on the other thin plate adsorbs the other side of the bag opening. At this time, the two thin plates respectively suck the two sides of the bag opening, so that the bag opening is in an open state.

[0004] However, this method results in a limited opening degree of the bag mouth and poor roundness, which makes it difficult for the bag mouth to be smoothly put on the feeding tube, thereby affecting the processing efficiency.

[0005] Refer to the Chinese patent document with authorization announcement number CN113650871B, announcement date March 10, 2023, and name A valve bag opening device. The suction cup is adsorbed on the bag top of the valve bag in the bag bin. After that, the linear module drives the valve bag to move upward. During the movement, because the valve bag pressure plate is pressed on the bottom of the valve bag, the suction cup can open the bag mouth of the valve bag. The linear module continues to move upward, so that the valve bag is separated from the valve bag pressure plate until it is in a vertical state. The telescopic cylinder drives the valve bag pressure plate downward to maintain the top pressure on the valve bag in the bag bin. The piston rod of the bag clamping arm cylinder moves upward, causing the two bag clamping arm assemblies to swing toward each other. The bag clamping shafts on the two bag clamping arm assemblies clamp the valve bag. At the same time, the two arc-shaped limit plates cooperate to limit the bag top of the valve bag and keep it in an open state. At this time, the suction cup no longer adsorbs the valve bag. Afterwards, the rotating cylinder drives the rotating inflation arm and the inflation head to swing to the bag opening of the valve bag, and the rotating cylinder drives the inflation head to extend into the bag opening of the valve bag. The solenoid valve group controls the gas to enter the inflation head, so that the inflation head switches to the inflation state, and the bag opening of the valve bag is rounded.

[0006] However, after the suction cup opens the bag opening of the valve bag, the bag opening is open to a limited degree, so the arc-shaped limit plate may not be able to properly restrict the bag top, causing the bag top to tilt or even slide, affecting the insertion of the inflation head, and further affecting the processing efficiency and effect. Summary of the invention

[0007] In view of this, the present invention provides a valve bag packaging device, aiming to solve the technical problem in the prior art that the bag opening of the valve bag is limited and is not easy to be put on the discharge pipe.

[0008] In order to solve the above technical problems, the present invention provides a valve bag packaging device, which adopts the following technical solutions: a valve bag packaging device, including a feeder, a mounting frame connected to the feeder, a plurality of suction cups, and two groups of bag clamping arms respectively connected to both sides of the mounting frame and swinging toward each other, and a driving module for driving the mounting frame to move linearly and rotate is connected to the feeder; The mounting frame is composed of a connecting frame and a limiting plate connected to the bottom surface of the connecting frame, the limiting plate is arc-shaped and its top protrudes upward, the internal through groove of the connecting frame extends downward and passes through the top of the limiting plate, a moving plate is vertically slidably inserted into the inner wall of the through groove, a moving part for driving the moving plate to move is provided on the connecting frame, a plurality of suction cups are arranged axially along the discharge pipe and are all connected to the bottom surface of the moving plate, a plurality of adsorption holes distributed on both sides of the suction cup are symmetrically provided on the inner wall of the limiting plate facing the valve pocket, and a gas part for controlling the air suction of the adsorption holes is provided on the mounting frame; Both sides of the bottom end of the limiting plate are connected to multiple air pipes arranged along the axial direction of the discharge pipe, the pipe openings of the air pipes are inclined downward and toward the bottom of the movable plate, and both sides of the bottom end of the limiting plate close to one end of the discharge pipe are connected to air pipes 2, the pipe openings of the air pipes 2 are toward the bottom of the movable plate, and the mounting frame is provided with air parts 2 for controlling the blowing of air pipes 1 and 2.

[0009] By adopting the above technical scheme, a suction cup adsorbs the bag top of the valve bag, and the installation frame and the suction cup drive the valve bag to move during the movement, until the valve bag is in a vertical position, and the air component controls multiple air tubes to blow air toward the valve bag, and the multiple air tubes blow air on both sides of the valve bag respectively to keep the valve bag in a vertical position, and the two bag clamping arms approach and cooperate with each other to clamp the valve bag, and the moving part drives the moving plate and the multiple suction cups to move upward, and the suction cup adsorbs the bag top and opens the bag mouth, and the air component controls the adsorption hole to absorb air, so that the upper half of the bag mouth fits with the inner wall of the limiting plate, so that the upper half of the bag mouth is opened as much as possible and kept in a semicircular shape, and the air component controls the air tube to blow air, and the air tube blows air toward the lower half of the inner wall of the bag mouth to open it.

[0010] If the valve bag is partially bent, the bent part of the valve bag may compensate for the dragging distance of suction cup one during the movement of suction cup one, resulting in the bag opening not being opened. Use air pipe one to blow air into the valve bag to keep it vertical, so that the two bag clamping arms can restrict the valve bag later, and then the bag opening can be opened smoothly when suction cup one moves later. Suction cup one drags the bag top of the valve bag upward, and the adsorption holes on the inner wall of the limit plate adsorb the upper half of the bag opening to open the bag opening as much as possible. Air pipe two blows air into the lower half of the inner wall of the bag opening to further open the bag opening as much as possible and improve the roundness of the bag opening, which is conducive to the successful fitting of the bag opening onto the discharge pipe.

[0011] Optionally, two arc-shaped rods extending along the circumference of the limiting plate are symmetrically arranged in the limiting plate, and the arc-shaped rods are slidably inserted in the limiting plate and the bottom ends thereof extend out of the bottom of the limiting plate.

[0012] By adopting the above technical solution, the arc rod extends out of the limit plate, and the arc plate and the two extended arc rods can cooperate to form an annular plate. The two arc rods can support the bag opening and cooperate with the blowing of the second air pipe to make the lower half of the bag opening as open as possible and improve its roundness.

[0013] Optionally, the second gas component includes a switching block connected to the top surface of the mounting frame, a vertical sliding cavity is opened inside the switching block, and a switching rod is slidably connected to the inner wall of the sliding cavity, whose bottom end passes through the top of the connecting frame and abuts against the top surface of the movable plate, a switching spring is provided between the top of the switching rod and the top surface of the sliding cavity, an annular groove is provided on the middle side wall of the switching rod, and a two-way gas valve capable of communicating with the annular groove is connected to the outside of the switching block, and a connecting pipe 1 and a connecting pipe 2 which are connected to the bottom and the top of the sliding cavity are connected to the outside of the switching block in sequence, and one of the connecting pipes 1 and 2 can be connected to the annular groove, and two connecting pipes 1 are symmetrically provided and are connected to the air pipe 1 located on both sides of the mounting frame in sequence, an air groove extending along the circumference of the limiting plate is opened inside the limiting plate near one end of the discharge pipe, the bottom end of the connecting pipe 2 is connected to the top of the air groove, and the two air pipes 2 are respectively connected to the two sides of the bottom of the air groove.

[0014] By adopting the above technical scheme, it is beneficial to control the timing of blowing air into air pipe one and air pipe two, improve the degree of automation of the device, and facilitate control. When the switching rod is separated from the movable plate, the two-way air valve is connected with the connecting pipe one through the annular groove, and air is blown into air pipe one to keep the valve bag in a vertical position; the movable plate and the suction cup one move upward, the bag opening is opened, and the movable plate abuts against the bottom of the switching rod. Under the pushing action of the movable plate, the switching rod moves upward to close the connecting pipe one, and the two-way air valve is connected with the connecting pipe two through the annular groove, and air is blown into air pipe two to further open the bag opening.

[0015] Optionally, the two arc-shaped rods are slidably inserted into the air groove, and a return spring is connected between the bottom end of the arc-shaped rod and the outer side wall of the connecting frame.

[0016] By adopting the above technical solution, it is easy to control the timing of extending and retracting the arc rod. After the switching rod moves up, the two-way air valve is connected to the second connecting pipe, and air is blown into the air groove. Under the action of air pressure, the two arc rods are extended to support the bag opening. After the blowing is completed, the gas in the air groove flows out through the two-way air valve, and the arc rod is retracted under the action of the reset spring, which facilitates the separation of the device from the valve bag.

[0017] Optionally, the gas component 1 includes an air duct 1 symmetrically arranged inside the connecting frame, two air valves connected to the two air ducts 1 are provided on the connecting frame, air duct 1 extends axially along the discharge pipe, and a plurality of air ducts 2 connected to air duct 1 are opened inside the side wall of the mounting frame, air duct 2 extends vertically, and the plurality of air ducts 2 are arranged axially along the discharge pipe, and the plurality of air ducts 2 are connected to the plurality of adsorption holes in sequence.

[0018] Optionally, the moving member includes a moving cylinder, which is connected to the top of the connecting frame, and an output end of the moving cylinder passes downward through the top of the connecting frame and is connected to the top surface of the moving plate.

[0019] Optionally, the driving module includes a driving cylinder 1 connected to the unloading machine, the output end of the driving cylinder 1 is horizontal and connected to a reversing block, the reversing block is rotatably connected to a reversing shaft, the reversing block is provided with a rotating part for driving the reversing shaft to rotate, the bottom end of the reversing shaft is connected to a driving cylinder 2, and the mounting frame is connected to the output end of the driving cylinder 2.

[0020] By adopting the above technical solution, through driving cylinder one, rotating part and driving cylinder two, it is convenient to control the position of the installation frame relative to the feeder, so as to facilitate the adsorption of the valve bag and complete the bagging.

[0021] Optionally, the rotating member includes a rotating motor connected to the commutation block, the output end of the rotating motor is connected to gear 1, the side wall of the commutation shaft is connected to a rotating shaft, the rotating shaft is rotatably connected to the commutation block, and gear 2 is sleeved on the rotating shaft, which is meshed with gear 1.

[0022] By adopting the above technical solution, a structure in which gear one and gear two are meshed is adopted, the structure is stable, and it is convenient to reasonably use the space, and it can be adjusted according to actual production needs.

[0023] Optionally, a bag clamping shaft is connected to the bottom of the bag clamping arm, and a plurality of suction cups 2 are connected to a side of the bag clamping shaft close to the valve bag.

[0024] By adopting the above technical solution, the two bag clamping arms can cooperate with each other to stably clamp the valve bag.

[0025] In summary, the present invention includes the following beneficial technical effects: 1. Multiple air pipes blow air toward both sides of the valve bag respectively to keep the valve bag in a vertical state, which is convenient for the bag clamping arm to clamp and limit it. The suction cup adsorbs and drags the bag top of the valve bag to open the bag mouth; cooperate with the limit plate and the adsorption holes on the limit plate to increase the opening degree of the upper half of the bag mouth as much as possible and improve its roundness; cooperate with air pipe 2 to blow air toward the lower half of the inner wall of the bag mouth to open the lower half of the bag mouth as much as possible, which is conducive to increasing the opening degree of the bag mouth, improving the roundness of the bag mouth, and facilitating the bag mouth to be put on the discharge pipe, thereby improving the bagging efficiency and the working efficiency of the discharge machine.

[0026] 2. A switching lever is set to facilitate the control of the blowing timing of air pipe 1 and air pipe 2, thereby improving the degree of automation of the device.

[0027] 3. The arc rod can support the lower part of the bag opening and cooperate with the blowing of the second air pipe to make the lower part of the bag opening as open as possible and improve its roundness.

[0028] 4. It is easy to control the timing of extending and retracting the arc rod, improve the degree of automation of the device, facilitate the device to work continuously and efficiently, and thus improve the packaging efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 for Figure 1 A partial enlarged schematic diagram of part A; Figure 3 It is a schematic diagram of the structure of the installation frame and the bag clamping member in the embodiment of the present invention; Figure 4 for Figure 3 A partial enlarged schematic diagram of part B; Figure 5 This is a schematic diagram of the structure of the gas component 1 in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the gas component 2 in the embodiment of the present invention; Figure 7 for Figure 6 A partial enlarged schematic diagram of part C in the middle.

[0030] Description of the accompanying drawings: 1. feeding machine; 11. feeding pipe; 12. bag bin; 2. driving module; 21. driving cylinder 1; 22. reversing block; 23. reversing shaft; 24. rotating member; 241. rotating motor; 242. gear 1; 243. rotating shaft; 244. gear 2; 25. driving cylinder 2; 3. mounting frame; 31. connecting frame; 32. limiting plate; 4. opening component 1; 41. moving plate; 42. moving member; 43. suction cup 1; 44. bag clamping member; 441. bag clamping arm; 4 42. Bag clamping shaft; 443. Suction cup 2; 444. Bag clamping cylinder; 45. Adsorption hole; 46. Air component 1; 461. Airway 1; 462. Airway 2; 5. Opening component 2; 51. Air pipe 1; 52. Air pipe 2; 53. Air component 2; 531. Switching block; 532. Sliding cavity; 533. Switching rod; 534. Switching spring; 535. Annular groove; 536. Two-way air valve; 537. Connecting pipe 1; 538. Connecting pipe 2; 539. Air groove; 54. Arc rod; 6. Valve bag. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0032] The following is combined with Figure 1 -Attached Figure 7 The present invention is described in further detail.

[0033] The embodiment of the present invention discloses a valve bag packaging device. Figures 1 to 7 A valve bag packaging device includes a feeder 1, a drive module 2, a mounting frame 3, an opening component 1 4 and an opening component 2 5.

[0034] Reference Figure 1 and Figure 2 The feeder 1 is connected with a feeder pipe 11, which is axially arranged horizontally. A bag bin 12 is arranged on one side of the feeder 1, and the bag bin 12 is used to store a plurality of folded valve bags 6. The driving module 2 is arranged between the feeder 1 and the mounting frame 3, and the output end of the driving module 2 is connected to the top surface of the mounting frame 3. The driving module 2 is used to drive the mounting frame 3 to move linearly in the horizontal and vertical directions and to drive the mounting frame 3 to rotate, so that it can take out the valve bag 6 from the bag bin 12 and move the valve bag 6 to the feeder pipe 11.

[0035] Reference Figure 2Specifically, the driving module 2 includes a driving cylinder 1 21, a reversing block 22, a reversing shaft 23, a rotating member 24 and a driving cylinder 2 25. The driving cylinder 1 21 is fixedly connected to the top surface of the blanking machine 1, the output end of the driving cylinder 1 21 extends axially horizontally, the reversing block 22 is fixedly connected to the output end of the driving cylinder 1 21, the reversing shaft 23 is rotatably connected to the reversing block 22, the rotating member 24 is used to drive the reversing shaft 23 to rotate, the driving cylinder 2 25 is fixedly connected to the bottom end of the reversing shaft 23, and the output end of the driving cylinder 2 25 extends vertically and is fixedly connected to the top surface of the mounting frame 3. The driving cylinder 1 21 controls the lateral movement of the mounting frame 3, and the driving cylinder 2 25 controls the longitudinal movement of the mounting frame 3.

[0036] Reference Figure 2 The rotating member 24 includes a rotating motor 241, a gear 1 242, two rotating shafts 243 and a gear 2 244. The rotating motor 241 is fixedly connected to the commutation block 22, the gear 1 242 is fixedly connected to the output end of the rotating motor 241, the two rotating shafts 243 are both axially horizontal and sequentially connected to both sides of the commutation shaft 23, the rotating shaft 243 is rotatably connected to the commutation block 22, so that the commutation shaft 23 rotates around the central axis of the rotating shaft 243, the gear 2 244 is fixedly sleeved on one of the rotating shafts 243, the gear 1 242 is meshed with the gear 2 244, the rotating motor 241 is started, and then the gear 1 242, the gear 2 244 and the rotating shaft 243 are sequentially driven to rotate, so as to realize the control of the rotation of the commutation shaft 23.

[0037] Reference Figure 1 and Figure 2 Furthermore, in other embodiments, the drive module 2 can also be implemented by a combination of structures such as an electric push rod, a linear motor, and a rotary motor 241. In this embodiment, a gear 1 242 and a gear 2 244 are meshed and transmitted, which is conducive to adjusting the structural position according to actual needs and selecting a suitable motor model to ensure that the device can be assembled smoothly and operate stably.

[0038] Reference Figure 3 and Figure 5 The mounting frame 3 is composed of a connecting frame 31 and a limiting plate 32. When the reversing shaft 23 is in a vertical state, the mounting frame 3 is in a horizontal state. At this time, the long side direction of the connecting frame 31 is parallel to the axial direction of the feeding tube 11. A vertically extending through groove is penetrated through the bottom surface of the connecting frame 31. The limiting plate 32 is connected to the bottom surface of the connecting frame 31. The limiting plate 32 is arc-shaped and its top protrudes upward. The through groove inside the connecting frame 31 extends downward and penetrates the top of the limiting plate 32.

[0039] The opening component 4 includes a moving plate 41, a moving member 42, a plurality of suction cups 43, two sets of bag clamping members 44, suction holes 45 and an air member 46.

[0040] Reference Figure 5 The moving plate 41 is placed horizontally, and the moving plate 41 is vertically slidably inserted into the through slot inside the connecting frame 31. The moving member 42 is connected to the top of the connecting frame 31, and the moving member 42 is used to drive the moving plate 41 to move back and forth vertically. Figure 3 and Figure 4 , multiple suction cups 43 are connected to the bottom surface of the moving plate 41, multiple suction cups 43 are arranged along the axial direction of the feeding pipe 11, and the suction cups 43 are equipped with air valves for controlling the suction of the suction cups 43. The mounting frame 3 moves to the bag bin 12, and the moving member 42 controls the moving plate 41 to extend, so that multiple suction cups 43 are in contact with the bag top of the valve bag 6, and the suction cups 43 are adsorbed, so that the valve bag 6 moves with the movement of the suction cups 43, and the valve bag 6 is taken out from the bag bin 12.

[0041] Reference Figure 5 Specifically, the moving member 42 includes a moving cylinder fixedly connected to the top surface of the connecting frame 31, and the output end of the moving cylinder vertically passes through the top surface of the connecting frame 31 and is fixedly connected to the top surface of the moving plate 41. When the moving cylinder is started, the moving plate 41 can be driven to move back and forth vertically, which is convenient for control. Furthermore, in other embodiments, the moving member 42 can also be a control element whose output end is linearly moved, such as an electric push rod.

[0042] Reference Figure 3 The two sets of bag clamping parts 44 are symmetrically arranged and sequentially connected to both sides of the connection frame 31. The bag clamping parts 44 include bag clamping arms 441, bag clamping shafts 442, multiple suction cups 443 and bag clamping cylinders 444. The two bag clamping arms 441 are arranged along the wide side direction of the connection frame 31, and the two bag clamping arms 441 are close to each other or away from each other, and rotate in opposite directions. The two bag clamping arms 441 cooperate with each other to fix the valve bag 6 adsorbed by the suction cup 43. The bag clamping shaft 442 is fixedly connected to the bottom of the bag clamping arm 441, and the bag clamping shaft 442 extends axially along the feeding tube 11. The suction cup 2 443 is connected to the side of the bag clamping shaft 442 close to the valve bag 6. Multiple suction cups 2 443 are arranged axially along the feeding tube 11. Each suction cup 2 443 is provided with an air valve for controlling the suction of the suction cup 2 443. The arrangement of multiple suction cups 2 443 can enhance the fixing ability and fixing effect of the bag clamping arm 441 on the valve bag 6, and reduce the bending of the valve bag 6. The bag clamping cylinder 444 is fixedly connected to the connecting frame 31, and is used to control the movement of the two groups of bag clamping arms 441 in turn. Among them, the bag clamping cylinder 444 that moves linearly at the output end controls the rotation of the bag clamping arm 441, which belongs to the technical content well known to those skilled in the art, so its structure and connection relationship are not described in detail in this embodiment.

[0043] Reference Figure 3 and Figure 4The adsorption hole 45 is opened on the inner wall of the limit plate 32 facing the valve bag 6. There are multiple adsorption holes 45 and they are symmetrically distributed on both sides of the suction cup 43. Figure 5 The air piece 46 is arranged on the mounting frame 3, and the air piece 46 is used to control the suction of the suction hole 45. After the bag clamping arm 441 fixes the side of the valve bag 6, the moving plate 41 and the suction cup 43 move upward, so that the bag opening of the valve bag 6 is opened, and the suction hole 45 is sucked, so that the upper half of the bag opening is sucked by the suction hole 45, so that the upper half of the bag opening fits with the inner wall of the limiting plate 32, thereby expanding the opening degree of the bag opening and improving the roundness of the upper half of the bag opening.

[0044] Reference Figure 5 Specifically, the gas component 1 46 includes two gas channels 1 461, two gas valves and multiple gas channels 2 462. The two gas channels 1 461 are symmetrically arranged on both sides of the connection frame 31, and the gas channels 1 461 extend axially along the feed pipe 11. The two gas valves are connected to the top surface of the connection frame 31. The two gas valves are connected to the two gas channels 1 461 in sequence. The gas valves are used to extract the gas in the gas channels 1 461. The multiple gas channels 2 462 are divided into two groups and are arranged on both sides of the installation frame 3 in sequence. The multiple gas channels 2 462 in each group are arranged axially along the feed pipe 11 and are connected to the gas channels 1 461. The multiple adsorption holes 45 are connected to the multiple gas channels 2 462 in sequence. The gas valve controls the air extraction, so that the adsorption hole 45 generates an adsorption force. Further, in other embodiments, the gas component 1 46 can also adopt a structure in which multiple gas valves and pipelines are configured to suck air. In this embodiment, the gas channels 1 461 and the gas channels 2 462 are provided, which can reduce the setting of the gas valves and simplify the arrangement of the structure on the installation frame 3.

[0045] The opening component 2 5 includes a plurality of air pipes 1 51 , two air pipes 2 52 , an air piece 2 53 and two arc rods 54 .

[0046] Reference Figure 3 and Figure 4 , multiple air pipes 1 51 are divided into two groups and are respectively connected to the two sides of the bottom end of the limiting plate 32. The air pipes 1 51 are tilted downward and their pipe openings are facing the bottom of the movable plate 41. Multiple air pipes 1 51 blow air. Under the joint action of the air pipes 1 51 on both sides, the valve bag 6 can be flattened and kept in a vertical position, which improves the situation that the valve bag 6 may be partially folded after being taken out, which is conducive to the stability of the device and ensures that the opening of the valve bag 6 is carried out smoothly. Two air pipes 2 52 are respectively connected to the two sides of the bottom end of the limiting plate 32. The air pipes 2 52 are arranged on the side of the limiting plate 32 close to the feeding pipe 11. The air pipes 2 52 are tilted and their pipe openings are facing the bottom of the movable plate 41, so that the air pipes 2 52 can blow air toward the inner wall of the bag opening of the valve bag 6. After the bag opening of the valve bag 6 is opened, the two air pipes 2 52 blow air, which is conducive to further opening the bag opening and facilitating the smooth progress of the subsequent bagging action. The gas component 2 53 is used to control the blowing of the air pipes 1 51 and the air pipes 2 52.

[0047] Specifically, the gas component 2 53 includes a switching block 531 , a sliding cavity 532 , a switching rod 533 , a switching spring 534 , an annular groove 535 , a two-way gas valve 536 , a connecting pipe 1 537 , a connecting pipe 2 538 and a gas groove 539 .

[0048] Reference Figure 6 and Figure 7 The switch block 531 is fixedly connected to the top surface of the connection frame 31, the sliding cavity 532 extends vertically, and the sliding cavity 532 is opened inside the switch block 531. The switch rod 533 is placed vertically and slidably inserted into the inner wall of the sliding cavity 532. The bottom end of the switch rod 533 is inserted into the top of the connection frame 31 in a sliding connection manner. The bottom end of the switch rod 533 can abut against the top surface of the moving plate 41. The switch spring 534 is placed vertically and its two ends are respectively fixedly connected to the top surface of the sliding cavity 532 and the top of the switch rod 533. When the moving plate 41 is separated from the switch rod 533, the switch rod 533 extends downward under the action of its own gravity and the action of the switch spring 534. When the moving plate 41 moves upward, the switch rod 533 moves upward and compresses the switch spring 534 under the pushing action of the moving plate 41.

[0049] Reference Figure 7 , the annular groove 535 is provided on the side wall of the middle part of the switching rod 533, and the annular groove 535 extends along the circumference of the switching rod 533. The two-way air valve 536 is connected to the outside of the switching block 531 and can be communicated with the annular groove 535. The two-way air valve 536 can inflate or extract the gas in the annular groove 535. Two connecting pipes 1 537 are symmetrically provided. The connecting pipe 1 537 is connected to the bottom of the sliding cavity 532, and the connecting pipe 2 538 is connected to the top of the sliding cavity 532. The air groove 539 is provided inside the limit plate 32 near one end of the feed tube 11. The air groove 539 extends along the circumference of the limit plate 32, and the air groove 539 is semicircular. The air pipes 1 51 on both sides of the limit plate 32 are connected to the two connecting pipes 1 537 in sequence, and the two air pipes 2 52 are connected to the two sides of the bottom of the air groove 539 in sequence. Among them, the connecting pipe 537 is composed of a pipe 1 extending vertically along the connecting frame 31 and a pipe 2 extending along the long side direction of the limiting plate 32. The top end of the pipe 1 is connected to the bottom of the sliding cavity 532, and the bottom end of the pipe 1 is connected to one end of the pipe 2. Multiple air pipes 51 are all connected to the bottom of the pipe 2, which is convenient for synchronously controlling the blowing of multiple air pipes 51 and is conducive to a reasonable structural layout.

[0050] Reference Figure 7When the switching spring 534 is extended, the annular groove 535 is connected with the connecting pipe 1 537. At this time, the two-way air valve 536 inputs gas into the annular groove 535, and the gas is blown out through the multiple air pipes 1 51 and acts on the valve bag 6, so that the valve bag 6 remains in a vertical position; when the switching spring 534 is compressed, the annular groove 535 is connected with the connecting pipe 2 538, and the two-way air valve 536 inputs gas into the annular groove 535. The gas flows along the connecting pipe 2 538 and the air groove 539, is blown out from the air pipe 2 52, and acts on the lower half of the inner wall of the bag opening, so that the bag opening is further opened.

[0051] Reference Figure 7 The two arc rods 54 extend along the circumference of the limiting plate 32, and the two arc rods 54 are slidably inserted into the inner wall of the air groove 539. There is a gap between the top ends of the two arc rods 54. The bottom ends of the arc rods 54 pass through the bottom wall of the limiting plate 32. A reset spring is connected between the bottom ends of the arc rods 54 and the side wall of the connecting frame 31. The arc rods 54 can close or connect the air pipe 2 52 and the air groove 539. In the process of the two-way air valve 536 inflating the connecting pipe 2 538 and the air groove 539 through the annular groove 535, the two arc rods 54 are moved away from each other under the action of air pressure, and the arc rods 54 extend out of the limiting plate 32. The two arc rods 54 cooperate with the limiting plate 32 to form an annular plate, which can support the outer wall of the bag opening, which is conducive to improving the roundness of the bag opening. After the arc rod 54 is extended, the two-way air valve 536 continues to inflate, and the gas is blown out through the second air pipe 52. The second air pipe 52 cooperates with the annular plate to further open the lower half of the bag opening. After the bag opening is completed, the gas in the air groove 539 flows out through the annular groove 535 and the two-way air valve 536, and the arc rod 54 is reset under the action of the reset spring, so that the device can work repeatedly for many times.

[0052] Reference Figure 6 and Figure 7 Furthermore, in other embodiments, the gas component 2 53 may also use multiple separate gas valves to sequentially control the gas pipe 1 51 and the gas pipe 2 52. Accordingly, in other embodiments, the movement of the arc rod 54 may also be driven by gear racks or directly driven by electric push rods and other components, so that the arc rod 54 can reciprocate. In this embodiment, the structure in which the switching block 531, the switching rod 533 and the gas groove 539 cooperate with each other is advantageous in that it is easy to control the timing of blowing gas from the gas pipe 1 51, blowing gas from the gas pipe 2 52, and extending the arc rod 54, which can improve the degree of automation of the device.

[0053] The implementation principle of a valve bag packaging device according to an embodiment of the present invention is as follows: The driving cylinder 1 21, the driving cylinder 25 and the rotating motor 241 cooperate to move the mounting frame 3 to the front of the bag bin 12, and the moving cylinder controls the movement of the moving block. A plurality of suction cups 43 are connected to the bag top of the valve bag 6, and the suction cup 1 43 adsorbs the valve bag 6. The mounting frame 3 is retracted. During the retraction process, the valve bag 6 follows the movement of the suction cup 43 until the valve bag 6 moves to the discharge pipe 11.

[0054] The two-way air valve 536 blows air into the two connecting pipes 537 through the annular groove 535, and the air is blown out through the multiple air pipes 51 and acts on the valve bag 6, so that the valve bag 6 is kept in a vertical position, and the situation where there is a bent or folded part on the valve bag 6 is avoided as much as possible. The bag clamping cylinder 444 controls the bag clamping arm 441, and the two bag clamping arms 441 are close to each other, and the suction cup 2 443 absorbs the side wall of the valve bag 6, and the two bag clamping shafts 442 cooperate with each other to fix the position of the valve bag 6.

[0055] The moving cylinder controls the moving plate 41 to move upward, the suction cup 43 moves upward and opens the bag opening of the valve bag 6, and the suction hole 45 sucks the outer wall of the bag opening to open the upper half of the bag opening as much as possible.

[0056] During the upward movement of the movable plate 41, the movable plate 41 pushes the switching rod 533 to move the switching rod 533 upward, and the switching rod 533 closes the connecting pipe 1 537. The annular groove 535 is connected with the connecting pipe 2 538. The two-way air valve 536 blows air into the air groove 539 through the annular groove 535 and the connecting pipe 2 538. Under the action of air pressure, the arc rod 54 extends until the air groove 539 is connected with the air pipe 2 52. At this time, the limit plate 32 cooperates with the two arc rods 54 to form an annular plate, and the gas is blown to the lower half of the inner wall of the bag opening through the air pipe 2 52, further opening the bag opening.

[0057] After the bag mouth is opened, the gas in the gas groove 539 flows out through the two-way gas valve 536, the arc rod 54 is retracted under the action of the return spring, and the mounting frame 3 moves to allow the valve bag 6 to be placed on the discharge pipe 11.

[0058] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A valve bag packaging device, comprising a feeder, a mounting frame connected to the feeder, a plurality of suction cups, and two groups of bag clamping arms respectively connected to both sides of the mounting frame and swinging toward each other. The feeder is connected to a driving module for driving the mounting frame to move linearly and rotate, characterized in that: The mounting frame is composed of a connecting frame and a limiting plate connected to the bottom surface of the connecting frame, the limiting plate is arc-shaped and its top protrudes upward, the internal through groove of the connecting frame extends downward and passes through the top of the limiting plate, a moving plate is vertically slidably inserted into the inner wall of the through groove, a moving part for driving the moving plate to move is provided on the connecting frame, a plurality of suction cups are arranged axially along the discharge pipe and are all connected to the bottom surface of the moving plate, a plurality of adsorption holes distributed on both sides of the suction cup are symmetrically provided on the inner wall of the limiting plate facing the valve pocket, and a gas part for controlling the air suction of the adsorption holes is provided on the mounting frame; Both sides of the bottom end of the limiting plate are connected to multiple air pipes arranged along the axial direction of the discharge pipe, the pipe openings of the air pipes are inclined downward and toward the bottom of the movable plate, and both sides of the bottom end of the limiting plate close to one end of the discharge pipe are connected to air pipes 2, the pipe openings of the air pipes 2 are toward the bottom of the movable plate, and the mounting frame is provided with air parts 2 for controlling the blowing of air pipes 1 and 2.

2. A valve bag packaging device according to claim 1, characterized in that: Two arc-shaped rods extending along the circumference of the limiting plate are symmetrically arranged in the limiting plate. The arc-shaped rods are slidably inserted in the limiting plate and the bottom ends thereof extend out of the bottom of the limiting plate.

3. A valve bag packaging device according to claim 2, characterized in that: The second gas component includes a switching block connected to the top surface of the mounting frame, a vertical sliding cavity is opened inside the switching block, a switching rod whose bottom end passes through the top of the connecting frame and abuts against the top surface of the moving plate is slidably connected to the inner wall of the sliding cavity, a switching spring is provided between the top of the switching rod and the top surface of the sliding cavity, an annular groove is provided on the middle side wall of the switching rod, a two-way gas valve capable of communicating with the annular groove is connected to the outside of the switching block, and a connecting pipe 1 and a connecting pipe 2 which are connected to the bottom and the top of the sliding cavity are connected to the outside of the switching block in sequence, one of the connecting pipe 1 and the connecting pipe 2 can be connected to the annular groove, two connecting pipes 1 are symmetrically provided and are connected to the air pipe 1 located on both sides of the mounting frame in sequence, an air groove extending along the circumference of the limiting plate is opened inside the limiting plate near one end of the discharge pipe, the bottom end of the connecting pipe 2 is connected to the top of the air groove, and the two air pipes 2 are respectively connected to the two sides of the bottom of the air groove.

4. A valve bag packaging device according to claim 3, characterized in that: The two arc-shaped rods are slidably inserted in the air groove, and a return spring is connected between the bottom end of the arc-shaped rod and the outer side wall of the connecting frame.

5. The valve bag packaging device according to claim 1, characterized in that: The gas component 1 includes an air channel 1 symmetrically arranged inside the connecting frame, two air valves connected to the two air channels 1 are arranged on the connecting frame, the air channel 1 extends axially along the discharge pipe, and a plurality of air channels 2 connected to the air channel 1 are opened inside the side wall of the mounting frame, the air channel 2 extends vertically, the plurality of air channels 2 are arranged axially along the discharge pipe, and the plurality of air channels 2 are connected to the plurality of adsorption holes in sequence.

6. The valve bag packaging device according to claim 1, characterized in that: The moving part comprises a moving cylinder, which is connected to the top of the connecting frame, and an output end of the moving cylinder passes downward through the top of the connecting frame and is connected to the top surface of the moving plate.

7. The valve bag packaging device according to claim 1, characterized in that: The driving module includes a driving cylinder 1 connected to the blanking machine, the output end of the driving cylinder 1 is horizontal and connected to a reversing block, the reversing block is rotatably connected to a reversing shaft, the reversing block is provided with a rotating part for driving the reversing shaft to rotate, the bottom end of the reversing shaft is connected to a driving cylinder 2, and the mounting frame is connected to the output end of the driving cylinder 2.

8. The valve bag packaging device according to claim 7, characterized in that: The rotating member includes a rotating motor connected to the commutation block, the output end of the rotating motor is connected to gear one, the side wall of the commutation shaft is connected to a rotating shaft, the rotating shaft is rotatably connected to the commutation block, and gear two is sleeved on the rotating shaft, and gear two is meshed with gear one.

9. The valve bag packaging device according to claim 1, characterized in that: The bottom of the bag clamping arm is connected with a bag clamping shaft, and a side of the bag clamping shaft close to the valve bag is connected with a plurality of suction cups 2.

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