Raw material discharging and conveying equipment for packaging material production

Abstract

The invention discloses raw material discharging and conveying equipment for packaging material production, and belongs to the technical field of conveying equipment.The raw material discharging and conveying equipment comprises an intermittent conveying conveying belt, a bag body discharging mechanism and a suction nozzle discharging mechanism, a plurality of C-shaped plates are evenly distributed on the surface of the conveying belt, and one end of each C-shaped plate is fixedly connected with a connecting base; a bag body adjusting motor is installed at the bottom end of the inner side of the C-shaped plate, the output end of the bag body adjusting motor is fixedly connected with a bag body position adjusting plate, and the top end of the bag body position adjusting plate is fixedly connected with guide inclined plates which are oppositely arranged. By arranging a passive magnet block, a driving magnet block, an electromagnet and a magnetic attraction block, when a bag body and a suction nozzle are conveyed to a pre-assembly point, under the action of magnetic repulsive force between the passive magnet block and the driving magnet block, a motor box drives a suction nozzle position adjusting block to move, and then under the action that the magnetic attraction block is attracted by the magnetic force of the electromagnet, the bag body and the suction nozzle are conveyed to the pre-assembly point. The automatic pre-assembly function of the suction nozzle and the bag body is achieved, manual pre-assembly of workers is not needed, and the pre-assembly efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying equipment, and in particular to a raw material unloading and conveying equipment for producing packaging materials. Background Art

[0002] The spout bag is a new type of beverage and jelly packaging bag developed on the basis of the stand-up bag. The spout bag consists of a bag body and a spout. When processing the existing spout bag, the staff needs to hold the bag body and open the bag opening by hand rubbing, then insert the thinner end of the spout into the inside of the bag opening, and use the automatic spout sealing machine for soft packaging bags to connect the bag opening and the spout by hot pressing;

[0003] When the staff pre-assembles the bag body and the suction nozzle, the staff needs to adjust the position of the bag body and the suction nozzle. After the suction nozzle is inserted upside down, it is not easy to find. Once it is hot-pressed and connected to the bag body, it cannot be removed and reconnected, resulting in material waste. In addition, the bag body needs to be manually opened by the bag mouth. Since the surface of the bag body is generally smooth, the friction force when rubbing the bag body by hand is often not large enough, making it difficult to open the bag mouth, affecting the assembly efficiency. Therefore, a raw material unloading and conveying equipment for packaging material production is proposed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the bag body and the nozzle of the nozzle bag need to be manually adjusted by the staff, which is not only inefficient but also prone to errors and causes material waste, and to propose a raw material unloading and conveying equipment for packaging material production.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A raw material unloading and conveying device for packaging material production, comprising an intermittent conveying conveyor belt, a bag unloading mechanism and a suction nozzle unloading mechanism, a plurality of C-shaped plates are evenly distributed on the surface of the conveyor belt, one end of the C-shaped plate is fixedly connected to a connecting seat, a bag adjustment motor is installed at the inner bottom end of the C-shaped plate, a bag position adjustment plate is fixedly connected to the output end of the bag adjustment motor, a relatively arranged guide inclined plate is fixedly connected to the top end of the bag position adjustment plate, a relatively arranged working opening is opened inside the bag position adjustment plate, and an electric telescopic rod is installed at the inner top end and the bottom end of the C-shaped plate facing the working opening;

[0007] A push slot is provided at the top of the connecting seat, a slider is slidably arranged inside the push slot, a pressure sensor is installed on the inner wall of the push slot, a reset spring is connected between the pressure sensor and the slider, a motor box is installed on the top of the slider, a passive magnet block is installed on the side wall of the motor box, a nozzle adjustment motor is installed inside the motor box, and a nozzle position adjustment block is fixedly connected to the output end of the nozzle adjustment motor;

[0008] The bag unloading mechanism comprises a bag discharging box arranged at one end of the conveyor belt, the top of the bag discharging box is an open structure, a discharging port is provided on a side of the bag discharging box facing the conveyor belt, a rubber roller is rotatably arranged on the inner wall of the bag discharging box near the discharging port, a bottom pad supporting the bag is fixedly connected to the inner bottom end of the bag discharging box, and a feeding motor connected to the rubber roller is installed on the outer side wall of the bag discharging box;

[0009] The nozzle unloading mechanism includes a nozzle unloading box arranged at one end of the conveyor belt, the top of the nozzle unloading box is fixedly connected with a unloading pipe connected thereto, the bottom end of the nozzle unloading box is provided with a unloading port, and a conveying roller is rotatably arranged on the inner side of the nozzle unloading box.

[0010] Preferably, the surface of the conveying roller is provided with circumferentially distributed conveying grooves, and the outer side wall of the suction nozzle unloading box is installed with a rotating motor fixedly connected to the conveying roller.

[0011] Preferably, a negative pressure generating box is provided below the electric telescopic rod, a distance-measuring type through-beam photoelectric sensor is installed on the top of the negative pressure generating box, and evenly distributed negative pressure generating holes are opened at the bottom of the negative pressure generating box;

[0012] A piston block is slidably provided inside the negative pressure generating box, one end of the electric telescopic rod is fixedly connected to the piston block, a pull-back spring is connected between the top of the piston block and the inner top of the negative pressure generating box, an exhaust pipe is fixedly connected to the side wall of the negative pressure generating box near the bottom end, and an electric check valve is provided on the exhaust pipe.

[0013] Preferably, an assembly plate is inserted into the top of the nozzle position adjustment block, and the nozzle position adjustment block and the top of the assembly plate are jointly provided with an arc-shaped opening for placing the nozzle, and the top of the assembly plate is provided with a guide groove symmetrical about the arc-shaped opening.

[0014] Preferably, a magnetic block is slidably provided inside the guide slot, and a connecting spring is fixedly connected between the magnetic block and the inner wall of the guide slot.

[0015] Preferably, an electromagnet for magnetically driving the magnetic attraction block to move is installed on the top of the assembly plate, and one end of the magnetic attraction block is fixedly connected to a nozzle pushing block for pushing the nozzle to move.

[0016] Preferably, L-shaped plates are fixedly connected to the two side surfaces of the connecting seat, a lifting cylinder is installed on the side wall of the L-shaped plate, a connecting rod slidably connected to the assembly plate is fixedly connected to the output end of the lifting cylinder, and a detection type photoelectric sensor is installed on the side wall of the L-shaped plate.

[0017] Preferably, a driving magnet block for magnetically repelling the passive magnet block is provided at one side of the conveyor belt.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This scheme is provided with a bag position adjustment plate, a bag adjustment motor and a negative pressure generating box. An electric telescopic rod is used to drive the negative pressure generating box toward the bag body and contact the bag surface at the bag opening, thereby forming negative pressure to adsorb the bag body. The electric telescopic rod is used to drive the negative pressure generating box to move and the bag opening can be opened, thereby realizing the automatic opening function of the bag opening.

[0020] 2. This solution is equipped with a ranging type through-beam photoelectric sensor, which can measure the final moving distance of the negative pressure generating box, determine whether there is a reverse problem in the bag placement position, and drive the bag position adjustment plate to rotate 180 degrees on the horizontal plane under the action of the bag adjustment motor, thereby realizing the automatic adjustment function of the bag position.

[0021] 3. This solution is provided with a nozzle adjustment motor and a detection-type through-beam photoelectric sensor. When the nozzle falls on the inner side of the arc-shaped opening on the nozzle position adjustment block, if the nozzle is placed upside down, the thicker end of the nozzle faces the bag opening. At this time, the thicker end of the nozzle will block the signal reception between the detection-type through-beam photoelectric sensors. At this time, the nozzle adjustment motor drives the nozzle position adjustment block to rotate 180 degrees on the horizontal plane, realizing the automatic adjustment function of the nozzle position, avoiding the phenomenon of incorrect docking between the nozzle and the bag opening, thereby avoiding waste of materials.

[0022] 4. This scheme is provided with a passive magnet block, a driving magnet block, an electromagnet and a magnetic attraction block. When the bag body and the nozzle are transported to the pre-assembly point, the motor box drives the nozzle position adjustment block to move under the action of the magnetic repulsion between the passive magnet block and the driving magnet block, so that the nozzle is close to the bag opening of the bag body. Then, under the action of the magnetic force of the electromagnet attracting the magnetic attraction block, the magnetic attraction block drives the nozzle pushing block to move, and the nozzle pushing block pushes the nozzle to move, so that the nozzle is inserted into the inside of the bag opening, thereby realizing the automatic pre-assembly function of the nozzle and the bag body, without the need for manual pre-assembly by staff, and significantly improving the pre-assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a raw material unloading and conveying device for packaging material production proposed by the present invention;

[0024] Figure 2 This is a schematic structural diagram of a bag body position adjustment plate and a nozzle position adjustment block in a raw material unloading and conveying device for packaging material production proposed by the present invention;

[0025] Figure 3 This is a schematic cross-sectional structure diagram of a negative pressure generating box in a raw material unloading and conveying device for packaging material production proposed by the present invention;

[0026] Figure 4 Schematic diagram of the assembly structure of the nozzle position adjustment block and the nozzle push block in the raw material unloading and conveying equipment for packaging material production proposed by the present invention Figure 1 ;

[0027] Figure 5 Schematic diagram of the assembly structure of the nozzle position adjustment block and the nozzle push block in the raw material unloading and conveying equipment for packaging material production proposed by the present invention Figure 2 ;

[0028] Figure 6 This is a schematic diagram of the internal structure of a bag unloading mechanism in a raw material unloading and conveying device for packaging material production proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the internal structure of a nozzle unloading mechanism in a raw material unloading and conveying device for packaging material production proposed by the present invention;

[0030] Figure 8 The present invention is a schematic diagram of the assembly structure of a connecting seat and a motor box in a raw material unloading and conveying device for packaging material production proposed by the present invention.

[0031] In the figure: 1. conveyor belt; 2. bag discharging box; 201. feeding motor; 202. discharging port; 203. bottom pad; 3. nozzle discharging box; 4. C-shaped plate; 5. driving magnet block; 6. bag position adjustment plate; 601. working port; 7. guide inclined plate; 8. bag adjustment motor; 9. L-shaped plate; 10. connecting seat; 11. reset spring; 12. passive magnet block; 13. nozzle push block; 14. magnetic suction block; 15. nozzle position adjustment whole block; 16. detection type through-beam photoelectric sensor; 17. negative pressure generating box; 18. electric telescopic rod; 19. ranging type through-beam photoelectric sensor; 20. pull-back spring; 21. piston block; 22. negative pressure generating hole; 23. exhaust pipe; 24. electromagnet; 25. connecting spring; 26. conveying roller; 2601. conveying trough; 27. motor box; 28. nozzle adjustment motor; 29. ​​assembly plate; 2901. guide slide; 30. lifting cylinder. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example, see Figures 1 to 8 A raw material unloading and conveying equipment for packaging material production, comprising an intermittent conveying conveyor belt 1, a bag unloading mechanism and a suction nozzle unloading mechanism (the bag unloading mechanism and the suction nozzle unloading mechanism are both installed on the ground through a support), a plurality of C-shaped plates 4 are evenly distributed on the surface of the conveyor belt 1, one end of the C-shaped plate 4 is fixedly connected to a connecting seat 10, a bag adjustment motor 8 is installed at the inner bottom end of the C-shaped plate 4, the output end of the bag adjustment motor 8 is fixedly connected to a bag position adjustment plate 6, the top end of the bag position adjustment plate 6 is fixedly connected to a relatively arranged guide inclined plate 7 (the guide inclined plate 7 can guide the falling bag to ensure that the bag can stably slide on the bag position adjustment plate 6), and a relatively arranged working port 601 is opened inside the bag position adjustment plate 6 (the setting of the working port 601 is convenient for the negative pressure generating box below the bag position adjustment plate 6 17 contacts the bag body), an electric telescopic rod 18 is installed at the inner top and bottom of the C-shaped plate 4 facing the working port 601; further, a negative pressure generating box 17 is arranged below the electric telescopic rod 18, and a ranging type photoelectric sensor 19 is installed at the top of the negative pressure generating box 17, and a uniformly distributed negative pressure generating hole 22 is opened at the bottom of the negative pressure generating box 17; a piston block 21 is slidingly arranged inside the negative pressure generating box 17, one end of the electric telescopic rod 18 is fixedly connected to the piston block 21, a return spring 20 is connected between the top of the piston block 21 and the inner top of the negative pressure generating box 17, an exhaust pipe 23 is fixedly connected to the side wall of the negative pressure generating box 17 near the bottom, and an electric check valve is arranged on the exhaust pipe 23 (the electric check valve can be controlled to open and close by an electric actuator, which is a prior art, and its working principle and specific structure are not repeated here).

[0035] It should be noted that the size of the bag opening after the bag body is expanded is slightly larger than the suction nozzle, and is significantly smaller than the size of the bottom of the suction nozzle bag after it is expanded. This is the structure of the existing suction nozzle bag and will not be described in detail later.

[0036] The electric telescopic rod 18 drives the piston block 21 to move toward the bag body, and then drives the negative pressure generating box 17 to move toward the bag body and contact the bag body. At this time, the negative pressure generating hole 22 on the surface of the negative pressure generating box 17 is blocked by the surface of the bag body. As the electric telescopic rod 18 continues to extend, the piston block 21 moves inside the negative pressure generating box 17 toward the bag body, and the air inside the negative pressure generating box 17 can be discharged through the exhaust pipe 23 (in this process, the return spring 20 is in a stretched state). When the electric telescopic rod 18 starts to drive the piston block 21 to move upward initially, the negative pressure generating box 17 will not move, so that negative pressure is generated inside the negative pressure generating box 17, which can adsorb the surface of the bag body. As the piston block 21 continues to move upward, it drives the negative pressure generating box 17 to move upward, so that the bag body can be pulled, and the automatic opening function of the bag mouth on the bag body is realized;

[0037] If the negative pressure generating box 17 stops moving, the moving distance of the negative pressure generating box 17 measured by the ranging type photoelectric sensor 19 is equal to the standard distance, indicating that the placement position of the bag is correct. At this time, the bag mouth of the bag is opened;

[0038] If the moving distance of the negative pressure generating box 17 measured by the ranging type through-beam photoelectric sensor 19 is greater than the standard distance, it means that the placement position of the bag body is reversed. At this time, the bag mouth of the bag body is not opened, but the bottom of the bag body is unfolded; because the suction spout bag is a self-standing bag, in order to ensure that it can stand stably, its bottom has a larger unfolding range, and the moving distance of the negative pressure generating boxes 17 on both sides when pulling the bag body to both sides is significantly increased, resulting in the moving distance of the negative pressure generating box 17 measured by the ranging type through-beam photoelectric sensor 19 being greater than the standard distance.

[0039] After the bag is reversed, the ranging type through-beam photoelectric sensor 19 feeds back to the external controller, and the external controller controls the bag adjustment motor 8 to work. The bag adjustment motor 8 drives the bag position adjustment plate 6 to rotate 180 degrees on the horizontal plane, thereby realizing the automatic correction function of the bag position.

[0040] A push chute is provided at the top of the connecting seat 10, a slider is slidably provided inside the push chute, a pressure sensor is installed on the inner wall of the push chute, a reset spring 11 is connected between the pressure sensor and the slider, a motor box 27 is installed on the top of the slider, a passive magnet block 12 is installed on the side wall of the motor box 27, a nozzle adjustment motor 28 is installed inside the motor box 27, and a nozzle position adjustment block 15 is fixedly connected to the output end of the nozzle adjustment motor 28; further, a driving magnet block 5 for magnetically repelling the passive magnet block 12 is provided on one side of the conveyor belt 1, and the installation position of the driving magnet block 5 is a pre-assembly point;

[0041] Furthermore, an assembly plate 29 is inserted into the top of the nozzle position adjustment block 15, and the nozzle position adjustment block 15 and the top of the assembly plate 29 are jointly provided with an arc-shaped opening for placing the nozzle, and a guide groove 2901 symmetrical about the arc-shaped opening is provided at the top of the assembly plate 29, and a magnetic block 14 is slidingly arranged inside the guide groove 2901, and a connecting spring 25 is fixedly connected between the magnetic block 14 and the inner wall of the guide groove 2901 (the connecting spring 25 can reset the magnetic block 14 and then automatically reset the nozzle push block 13 after the electromagnet 24 is powered off).

[0042] It should be noted that: when the conveyor belt 1 drives the C-shaped plate 4 and the connecting seat 10 to move to the pre-assembly point, the motor box 27 is pushed to move under the action of the magnetic repulsion between the driving magnet block 5 and the passive magnet block 12, thereby driving the nozzle adjustment motor 28 inside it to move, and the nozzle adjustment motor 28 drives the nozzle position adjustment block 15 connected to its output end to move, and the nozzle position adjustment block 15 drives the nozzle to move close to the bag opening of the bag body, so that the subsequent nozzle pushing block 13 can push the nozzle into the inner side of the bag opening;

[0043] During the movement of the motor box 27, the slider at its bottom will be driven to slide inside the push slot, thereby squeezing the reset spring 11. At this time, the pressure sensor will monitor the pressure. When the motor box 27 stops moving, the elastic force of the reset spring 11 reaches the maximum. At this time, the pressure sensor will monitor that the pressure value has also reached the threshold. The pressure sensor will feedback to the external controller. The external controller controls the electromagnet 24 to open for a limited time, so that the electromagnet 24 can magnetically attract the magnetic block 14, so that the magnetic block 14 drives the nozzle push block 13 to move, and the nozzle push block 13 pushes the nozzle to move, thereby realizing the plug-in function of the nozzle and the bag mouth, and then automatically realizing the automatic pre-assembly function of the nozzle and the bag body, thereby improving the pre-assembly efficiency and assembly accuracy, and avoiding material waste due to incorrect assembly.

[0044] Furthermore, an L-shaped plate 9 is fixedly connected to the two side surfaces of the connecting seat 10, a lifting cylinder 30 is installed on the side wall of the L-shaped plate 9, an output end of the lifting cylinder 30 is fixedly connected to a connecting rod slidably connected to the assembly plate 29, and a detection type photoelectric sensor 16 is installed on the side wall of the L-shaped plate 9.

[0045] It should be noted that: when the nozzle falls on the inner side of the arc-shaped opening on the nozzle position adjustment block 15, if the nozzle position is reversed, the thicker end of the nozzle faces the bag opening. At this time, the thicker end of the nozzle will block the signal reception between the detection type photoelectric sensor 16, and the detection type photoelectric sensor 16 will feedback to the external controller. The external controller controls the lifting cylinder 30 and the nozzle adjustment motor 28 to work in sequence. The lifting cylinder 30 drives the assembly plate 29 to move up through the connecting rod, and then drives the nozzle push block 13, the magnetic suction block 14 and the electromagnet 24 to move up to avoid affecting the rotation of the nozzle.

[0046] Afterwards, the nozzle adjustment motor 28 drives the nozzle position adjustment block 15 to rotate 180 degrees on the horizontal plane to realize the automatic adjustment function of the nozzle position, thereby avoiding the phenomenon of incorrect docking between the nozzle and the bag opening, thereby avoiding waste of materials.

[0047] The bag unloading mechanism includes a bag discharging box 2 arranged at one end of the conveyor belt 1, the top of the bag discharging box 2 is an open structure, a discharging port 202 is provided on the side of the bag discharging box 2 facing the conveyor belt 1, a rubber roller is rotatably provided on the inner wall of the bag discharging box 2 near the discharging port 202, a bottom pad 203 supporting the bag is fixedly connected to the inner bottom end of the bag discharging box 2 (the bottom pad 203 can support the bag to ensure that the stacked bags can be placed flat), and a feeding motor 201 connected to the rubber roller is installed on the outer side wall of the bag discharging box 2;

[0048] It should be noted that: the bags in the bag discharging box 2 are stacked one by one, and the bag at the bottom contacts the rubber roller. When the feeding motor 201 drives the rubber roller to rotate, the friction between the rubber roller and the bag makes the bag at the bottom move out of the bag discharging box 2 through the discharging port 202. The moved bag automatically slides onto the bag position adjusting plate 6 under the guidance of the guide inclined plate 7, completing the automatic unloading function of the bag.

[0049] It is worth noting that the slot height of the discharge port 202 is adapted to the thickness of a single bag. When the feeding motor 201 drives the rubber roller to rotate, only a single bag is allowed to pass through due to the friction between the rubber roller and the bag. This is the existing bag paging technology and will not be repeated in the following description.

[0050] The nozzle unloading mechanism includes a nozzle unloading box 3 arranged at one end of the conveyor belt 1, the top of the nozzle unloading box 3 is fixedly connected with a unloading pipe connected thereto, the bottom of the nozzle unloading box 3 is provided with a unloading port, a conveying roller 26 is rotatably arranged on the inner side of the nozzle unloading box 3, and a circumferentially distributed conveying groove 2601 is provided on the surface of the conveying roller 26, a rotating motor fixedly connected to the conveying roller 26 is installed on the outer wall of the nozzle unloading box 3, an electromagnet 24 for magnetically driving the magnetic suction block 14 to move is installed on the top of the assembly plate 29, and a nozzle pushing block 13 for pushing the nozzle to move is fixedly connected to one end of the magnetic suction block 14.

[0051] It should be noted that: the rotating motor drives the conveying roller 26 to rotate intermittently, and the suction nozzles inside the discharge pipe are stacked one by one. When the conveying groove 2601 on the surface of the conveying roller 26 rotates to the bottom of the discharge pipe, the suction nozzle inside it automatically falls into the conveying groove 2601. When the conveying roller 26 drives the suction nozzle to rotate to the discharge port at the bottom of the suction nozzle discharge box 3, the suction nozzle falls into the arc-shaped opening at the top of the suction nozzle position adjustment block 15 under the action of its own gravity, completing the automatic discharge function of the suction nozzle.

[0052] When the present invention is used, an external controller is used to control the intermittent conveying of the conveyor belt 1. When the bag position adjustment plate 6 and the suction nozzle position adjustment block 15 move to the bag unloading mechanism and the suction nozzle unloading mechanism under the conveying action of the conveyor belt 1, the conveyor belt 1 stops working, and the external controller controls the feeding motor 201 and the rotating motor to work. The feeding motor 201 drives the rubber roller to rotate. Under the action of the friction between the rubber roller and the bag, the lowermost bag moves out of the bag unloading box 2 through the discharge port 202. The moved bag automatically slides onto the bag position adjustment plate 6 under the guidance of the guide inclined plate 7, completing the automatic unloading function of the bag (the above-mentioned bag unloading method is an existing commonly used unloading method, which is not described in detail here);

[0053] The rotating motor drives the conveying roller 26 to rotate intermittently (the rotating motor rotates 1 / N each time, N is the number of conveying grooves 2601). When the conveying groove 2601 on the surface of the conveying roller 26 rotates to the position directly below the discharge pipe, the suction nozzle inside it automatically falls into the conveying groove 2601. When the conveying roller 26 drives the suction nozzle to rotate to the discharge port at the bottom end of the suction nozzle discharge box 3, the suction nozzle falls into the arc-shaped port at the top of the suction nozzle position adjustment block 15 under the action of its own gravity, completing the automatic discharge function of the suction nozzle;

[0054] When the nozzle falls into the arc-shaped mouth, if the position of the nozzle is reversed (the thicker end of the nozzle faces the bag mouth), at this time, the thicker end of the nozzle will block the signal reception between the detection type photoelectric sensor 16, and the detection type photoelectric sensor 16 will feedback to the external controller. The external controller controls the lifting cylinder 30 and the nozzle adjustment motor 28 to work in sequence. The lifting cylinder 30 drives the assembly plate 29 to move up through the connecting rod (the assembly plate 29 is separated from the nozzle position adjustment block 15), thereby driving the nozzle push block 13, the magnetic suction block 14 and the electromagnet 24 to move up. After that, the nozzle adjustment motor 28 drives the nozzle position adjustment block 15 to rotate 180 degrees on the horizontal plane to realize the automatic adjustment function of the nozzle position, so as to avoid the phenomenon of incorrect docking between the nozzle and the bag mouth, thereby avoiding waste of materials. After the nozzle position is adjusted, the lifting cylinder 30 drives the assembly plate 29 to move down and reset through the connecting rod again, thereby driving the nozzle push block 13, the magnetic suction block 14 and the electromagnet 24 to move down and reset (the assembly plate 29 and the nozzle position adjustment block 15 are plugged in again);

[0055] At the same time, the electric telescopic rod 18 drives the piston block 21 to move toward the bag body, and then drives the negative pressure generating box 17 to move toward the bag body. When the negative pressure generating box 17 contacts the bag body, the negative pressure generating hole 22 on the surface of the negative pressure generating box 17 is blocked by the surface of the bag body. As the electric telescopic rod 18 continues to extend, the piston block 21 moves inside the negative pressure generating box 17 toward the bag body, and the air inside the negative pressure generating box 17 (the air between the piston block 21 and the negative pressure generating hole 22) can be discharged through the exhaust pipe 23 (in this process, the return spring 20 When the electric telescopic rod 18 starts to drive the piston block 21 to move upward initially, the negative pressure generating box 17 will not move (because the pull-back spring 20 is in a stretched state, before the pull-back spring 20 returns to normal, the pull-back spring 20 always exerts a pulling force on the negative pressure generating box 17 toward the negative pressure generating hole 22), so that negative pressure is generated inside the negative pressure generating box 17, which can adsorb the surface of the bag body. As the piston block 21 continues to move upward, the negative pressure generating box 17 is driven to move upward, so that the bag body can be pulled, realizing the automatic opening function of the bag mouth on the bag body;

[0056] If the moving distance of the negative pressure generating box 17 measured by the ranging type through-beam photoelectric sensor 19 is equal to the standard distance when the negative pressure generating box 17 stops moving, it means that the placement position of the bag is correct, and at this time, the bag mouth of the bag is opened;

[0057] If the moving distance of the negative pressure generating box 17 measured by the ranging type photoelectric sensor 19 is greater than the standard distance, it means that the placement position of the bag body is reversed. At this time, the bag mouth of the bag body is not opened, but the bottom of the bag body is unfolded. At this time, the external controller controls the electric check valve to open through the electric actuator. At this time, the outside gas enters the negative pressure generating box through the exhaust pipe 23, so that the internal air pressure of the negative pressure generating box returns to normal, and the adsorption function of the bag body is lost. The electric telescopic rod 18 drives the negative pressure generating box to reset; because the nozzle bag is a self-supporting bag, in order to ensure that it can stand stably, its bottom has a larger unfolding range.

[0058] After the bag is reversed, the ranging type photoelectric sensor 19 gives feedback to the external controller, and the external controller controls the bag adjustment motor 8 to work, and the bag adjustment motor 8 drives the bag position adjustment plate 6 to rotate 180 degrees on the horizontal plane to realize the automatic correction function of the bag position, and then the electric telescopic rod 18 drives the negative pressure generating box 17 to repeat the above operation again to realize the opening function of the bag mouth on the bag;

[0059] As the conveyor belt 1 continues to transport, when the bag body and the suction nozzle are transported to the pre-assembly point, the driving magnet block 5 will repel the passive magnet block 12, so that the passive magnet block 12 pushes the motor box 27 to move, the motor box 27 drives the suction nozzle adjustment motor 28 to move, the suction nozzle adjustment motor 28 drives the suction nozzle position adjustment block 15 to move, the suction nozzle position adjustment block 15 drives the suction nozzle to approach the bag opening of the bag body, and the motor box 27 will drive the slider at its bottom to move during the movement, and the slider will compress the reset spring 11. When the motor box 27 stops moving, the elastic force value of the reset spring 11 reaches the maximum At this time, the pressure sensor will detect that the pressure value has also reached the threshold value, and the pressure sensor will feedback to the external controller. The external controller controls the electromagnet 24 to open for a limited time and delay for a few seconds. Then, the electric actuator controls the electric check valve to open, so that the electromagnet 24 can magnetically attract the magnetic block 14, so that the magnetic block 14 drives the nozzle push block 13 to move, and the nozzle push block 13 drives the nozzle to move, so as to realize the plug-in function of the nozzle and the bag mouth, and then automatically realize the automatic pre-assembly function of the nozzle and the bag body, thereby improving the pre-assembly efficiency and assembly accuracy, and avoiding material waste caused by incorrect assembly;

[0060] After the suction nozzle and the bag body are pre-assembled, the negative pressure generating box 17 loses the negative pressure adsorption on the bag body after the electric check valve is opened, and is reset under the action of the electric telescopic rod 18. At the same time, the electromagnet 24 loses its magnetism after power failure. Under the elastic force of the connecting spring 25, the magnetic suction block 14 drives the suction nozzle pushing block 13 to reset. When the conveyor belt 1 continues to convey, the passive magnet block 12 and the driving magnet block 5 are staggered. Under the action of the reset spring 11, the motor box 27 drives the suction nozzle adjustment motor 28 and the suction nozzle position adjustment block 15 to reset. At this time, the suction nozzle is separated from the suction nozzle position adjustment block 15, and the suction nozzle is inserted on the inside of the bag opening (because the opened bag opening has resilience, it has a certain clamping force on the suction nozzle, thereby ensuring the stability of the connection between the suction nozzle and the bag opening). When the conveyor belt 1 transports the pre-assembled bag body and suction nozzle to the end, the staff will take them away and perform hot pressing connection operation through the automatic nozzle filling and sealing machine for soft packaging bags.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A raw material unloading and conveying device for packaging material production, comprising an intermittent conveying conveyor belt (1), a bag unloading mechanism and a suction nozzle unloading mechanism, characterized in that: A plurality of C-shaped plates (4) are evenly distributed on the surface of the conveyor belt (1), one end of the C-shaped plate (4) is fixedly connected to a connecting seat (10), a bag body adjustment motor (8) is installed at the inner bottom end of the C-shaped plate (4), an output end of the bag body adjustment motor (8) is fixedly connected to a bag body position adjustment plate (6), a top end of the bag body position adjustment plate (6) is fixedly connected to a relatively arranged guide inclined plate (7), a relatively arranged working opening (601) is opened inside the bag body position adjustment plate (6), and an electric telescopic rod (18) is installed at the inner top end and the bottom end of the C-shaped plate (4) directly opposite to the working opening (601); A push groove is provided at the top of the connecting seat (10), a slider is slidably arranged inside the push groove, a pressure sensor is installed on the inner wall of the push groove, a return spring (11) is connected between the pressure sensor and the slider, a motor box (27) is installed on the top of the slider, a passive magnet block (12) is installed on the side wall of the motor box (27), a nozzle adjustment motor (28) is installed inside the motor box (27), and a nozzle position adjustment block (15) is fixedly connected to the output end of the nozzle adjustment motor (28); The bag unloading mechanism comprises a bag discharging box (2) arranged at one end of the conveyor belt (1), the top end of the bag discharging box (2) is an open structure, a discharging port (202) is provided on the side of the bag discharging box (2) facing the conveyor belt (1), a rubber roller is rotatably provided on the inner wall of the bag discharging box (2) near the discharging port (202), a bottom pad (203) supporting the bag is fixedly connected to the inner bottom end of the bag discharging box (2), and a feeding motor (201) connected to the rubber roller is installed on the outer wall of the bag discharging box (2); The suction nozzle unloading mechanism comprises a suction nozzle unloading box (3) arranged at one end of the conveyor belt (1), the top end of the suction nozzle unloading box (3) is fixedly connected to a unloading pipe connected thereto, the bottom end of the suction nozzle unloading box (3) is provided with a unloading port, and a conveying roller (26) is rotatably arranged inside the suction nozzle unloading box (3).

2. The raw material unloading and conveying equipment for packaging material production according to claim 1 is characterized in that: The surface of the conveying roller (26) is provided with circumferentially distributed conveying grooves (2601), and the outer side wall of the suction nozzle unloading box (3) is installed with a rotating motor fixedly connected to the conveying roller (26).

3. The raw material unloading and conveying equipment for packaging material production according to claim 1 is characterized in that: A negative pressure generating box (17) is arranged below the electric telescopic rod (18), a distance-measuring type photoelectric sensor (19) is installed at the top of the negative pressure generating box (17), and evenly distributed negative pressure generating holes (22) are opened at the bottom of the negative pressure generating box (17); A piston block (21) is slidably disposed inside the negative pressure generating box (17); one end of the electric telescopic rod (18) is fixedly connected to the piston block (21); a pull-back spring (20) is connected between the top end of the piston block (21) and the inner top end of the negative pressure generating box (17); an exhaust pipe (23) is fixedly connected to the side wall of the negative pressure generating box (17) near the bottom end; and an electric check valve is disposed on the exhaust pipe (23).

4. The raw material unloading and conveying equipment for packaging material production according to claim 1 is characterized in that: An assembly plate (29) is inserted into the top of the nozzle position adjustment block (15), and the tops of the nozzle position adjustment block (15) and the assembly plate (29) are jointly provided with an arc-shaped opening for placing the nozzle, and the top of the assembly plate (29) is provided with a guide groove (2901) symmetrical with respect to the arc-shaped opening.

5. The raw material unloading and conveying equipment for packaging material production according to claim 4, characterized in that: A magnetic block (14) is slidably arranged inside the guide slide groove (2901), and a connecting spring (25) is fixedly connected between the magnetic block (14) and the inner wall of the guide slide groove (2901).

6. The raw material unloading and conveying equipment for packaging material production according to claim 5, characterized in that: An electromagnet (24) for magnetically driving the magnetic attraction block (14) to move is installed at the top of the assembly plate (29), and one end of the magnetic attraction block (14) is fixedly connected to a nozzle pushing block (13) for pushing the nozzle to move.

7. The raw material unloading and conveying equipment for packaging material production according to claim 4, characterized in that: The two side surfaces of the connection seat (10) are fixedly connected with L-shaped plates (9), the side walls of the L-shaped plates (9) are installed with lifting cylinders (30), the output ends of the lifting cylinders (30) are fixedly connected with connecting rods slidably connected with the assembly plates (29), and the side walls of the L-shaped plates (9) are installed with detection type through-beam photoelectric sensors (16).

8. The raw material unloading and conveying equipment for packaging material production according to claim 1, characterized in that: A driving magnet block (5) for magnetically repelling the passive magnet block (12) is arranged on one side of the conveyor belt (1).

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