Automatic material supplementing device for material shortage of packaging production line

Abstract

The application discloses a kind of packing production line material material automatic replenishment device, it is related to production line material replenishment equipment technical field, in view of the problem that existing replenishment device lacks no-stop automatic replenishment measure, the following scheme is presented, including mounting bracket, the mounting bracket is opened with round hole, and the feeding hopper is fixedly connected in round hole, the outside of mounting bracket is fixedly connected with prompt light, and the upside of mounting bracket is provided with two symmetrical storage barrels, and the outside of two storage barrels is provided with same double-channel replenishment module.The packing production line material material automatic replenishment device disclosed in the application can be aimed at the pain point that existing packing production line must be stopped during feeding, by the mutual switching of two modular storage barrels and the mutual combination of one method using one spare, not only realizes the complete decoupling of feeding process and production process, but also significantly reduces the downtime of equipment, improves the continuous operation rate of equipment, improves the production efficiency of production line.

Description

Technical Field

[0001] This invention relates to the field of material replenishment equipment for production lines, and in particular to an automatic material replenishment device for packaging production lines when materials are insufficient. Background Technology

[0002] The materials used in packaging production lines mainly fall into three categories: packaging materials such as plastic bags, cardboard boxes, labels, and tapes; auxiliary consumables such as ink, hot melt adhesive, and cleaning agents; and the products being packaged. Reasonable selection and matching of equipment speed, pollution prevention, and dual-station material supply are key management points that ensure the continuous and efficient operation of the production line.

[0003] The existing feeding device has a fixed welded integrated funnel hopper. When the material shortage alarm is triggered, the operator must press the emergency stop or pause button, open the hopper cover, and pour the material in from above. This method requires the equipment to be completely stopped when feeding, resulting in a large loss of equipment working hours and a great impact on the production efficiency of the equipment. Summary of the Invention

[0004] This invention discloses an automatic material replenishment device for packaging production lines, which aims to solve the technical problem that existing replenishment devices lack automatic replenishment measures without stopping the machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic material replenishment device for a packaging production line includes a mounting frame with a circular hole. A feeding hopper is fixedly connected to the circular hole. An indicator light is fixedly connected to the outside of the mounting frame. Two symmetrical storage cylinders are arranged on the upper side of the mounting frame. A dual-channel replenishment module is arranged on the outside of the two storage cylinders. A non-destructive unblocking module is arranged on the feeding hopper. The dual-channel replenishment module includes a photoelectric sensor and an ultrasonic sensor, both of which are arranged on the feeding hopper. A sliding groove is formed on the upper side of the mounting frame. Slide rails are fixedly connected to the inner walls of both sides of the sliding groove. A fixed frame is slidably connected to the two slide rails. The bottom of the fixed frame is slidably connected to the bottom inner wall of the sliding groove. Two symmetrical slots are formed on the fixed frame. A stabilizing frame is fixedly connected to the inner wall of each slot. The outside of the two storage cylinders is respectively inserted into the two stabilizing frames.

[0007] In a preferred embodiment, the fixing frame has multiple symmetrical circular openings, each containing a slidable positioning pin. Each positioning pin is slidably connected to an outer bracket, the bottom of which is fixedly connected to the upper side of the fixing frame. Each positioning pin is surrounded by a spring, one end of which is fixedly connected to the outside of a positioning pin on the same side, and the other end is fixedly connected to the outside of the outer bracket on the same side. Both stabilizing frames are fixedly connected to anti-tilt hoops, the inner walls of which are slidably connected to the outside of the storage cylinder. The bottom inner wall of the trough has multiple symmetrical docking slots, each containing a contact sensor. Two equidistant flexible guide members are fixedly connected to the inner walls of both stabilizing frames. The inner walls of the flexible guide members are slidably connected to the outside of the storage cylinder on the same side. Both stabilizing frames have through holes at their bottoms, one of which is aligned with the feeding hopper on the same axis. A sealing gasket is fixedly connected to the bottom inner wall of each stabilizing frame, and the bottom of each storage cylinder contacts the upper side of the sealing gasket. A cylinder cap is inserted into the upper side of both storage cylinders. Both storage cylinders have observation windows on their exteriors, and each storage cylinder has a slot located below the observation window. A drawer plate is slidably connected to each slot. Two symmetrical guide rails are fixedly connected to the exterior of each storage cylinder, and a common partition plate is slidably connected to the two guide rails on the same side. Pull rings are fixedly connected to the side of each drawer plate away from the storage cylinder. A boss is fixedly connected to the exterior of each partition plate, and a transmission rod is fixedly connected to the upper side of each boss. A boss is slidably connected to the exterior of each transmission rod, and the side of the boss opposite the exterior of the storage cylinder... The two transmission rods are fixedly connected, and springs are wrapped around their outer sides. One end of each spring is fixedly connected to the upper side of the boss, and the other end is fixedly connected to the bottom of the boss. A connecting plate is fixedly connected to the upper side of the fixed frame. Two symmetrical support frames are fixedly connected to one side of the mounting frame. Each support frame is equipped with a hydraulic rod. The output end of each hydraulic rod is fixedly connected to one side of the connecting plate. Two symmetrical limiting frames are fixedly connected to the outside of the mounting frame. Each limiting frame is equipped with a soft pad, and the outside of one of the soft pads contacts the outside of the fixed frame.

[0008] In a preferred embodiment, the non-invasive unblocking module includes multiple nozzles equidistantly distributed in a circular pattern. The feeding hopper has multiple equidistantly distributed notches, the inner walls of which are all fixedly connected to the exterior of the nozzles on the same side. A common air guide pipe is provided on the exterior of the multiple nozzles, and a pulse tube is fixedly connected to the end of the air guide pipe furthest from the nozzle. An airtight sleeve is fixedly connected to the inner wall of the pulse tube, and a piston is slidably connected to the inner wall of the airtight sleeve. An annular groove is formed on the exterior of the piston, and a sealing ring is fixedly connected to the inner wall of the annular groove. The exterior of the sealing ring is connected to… The inner wall of the airtight sleeve is slidably connected, and multiple air guide chambers are circumferentially distributed on the side of the piston away from the sealing ring; a support frame is fixedly connected to the inner wall of the pulse tube, and a spring three is fixedly connected to the side of the support frame near the piston. The other end of the spring three is fixedly connected to the outside of the piston, and a fine hole is opened on the side of the pulse tube away from the air guide tube. A short tube is fixedly connected inside the fine hole, and a pressure stabilizing chamber is fixedly connected to the end of the short tube away from the pulse tube; an air pump is fixedly connected to the bottom of the mounting bracket, and the output end of the air pump is connected to the pressure stabilizing chamber through a conduit.

[0009] As can be seen from the above, the automatic material replenishment device for packaging production lines provided by the present invention addresses the pain point of existing packaging production lines having to stop to add materials. By combining the mutual switching of two modular storage cylinders with the method of using one in use and keeping one as a backup, it not only achieves complete decoupling of the material adding process from the production process, but also significantly reduces equipment downtime, improves the continuous operation rate of the equipment, and enhances the production efficiency of the production line. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of an automatic material replenishment device for a packaging production line proposed in this invention.

[0011] Figure 2 This is a bottom view of the structure of an automatic material replenishment device for a packaging production line according to the present invention.

[0012] Figure 3 This is a cross-sectional structural schematic diagram of an automatic material replenishment device for a packaging production line according to the present invention.

[0013] Figure 4 This is a schematic diagram of the fixed frame structure of an automatic material replenishment device for a packaging production line according to the present invention.

[0014] Figure 5 This is a schematic diagram of the storage cylinder structure of an automatic material replenishment device for a packaging production line where material shortage is a problem, as proposed in this invention.

[0015] Figure 6 This is a schematic diagram of the non-damaging unblocking module structure of an automatic material replenishment device for packaging production lines proposed in this invention.

[0016] Figure 7 This is a schematic diagram of the pulse tube structure of an automatic material replenishment device for a packaging production line according to the present invention.

[0017] In the diagram: 1. Mounting bracket; 2. Storage cylinder; 3. Indicator light; 4. Feed hopper; 5. Dual-channel feeding module; 501. Photoelectric sensor; 502. Ultrasonic sensor; 503. Slide rail; 504. Fixing bracket; 505. Stabilizing frame; 506. Connecting plate; 507. Support frame; 508. Hydraulic rod; 509. Limiting bracket; 510. Soft pad; 511. Positioning pin; 512. Docking groove; 513. Contact sensor; 514. External bracket; 515. Spring 1; 516. Seal 517. Pad; 518. Anti-slant hoop; 519. Soft guide component; 520. Cylinder cover; 521. Observation window; 522. Draw plate; 523. Pull ring; 524. Isolation plate; 525. Transmission rod; 526. Spring II; 6. Non-destructive unblocking module; 601. Nozzle; 602. Pressure stabilizing chamber; 603. Air pump; 604. Air guide pipe; 605. Pulse pipe; 606. Airtight sleeve; 607. Piston; 608. Air guide chamber; 609. Sealing ring; 610. Support frame; 611. Spring III. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] The automatic material replenishment device for packaging production lines disclosed in this invention is mainly applied to scenarios where existing replenishment devices lack automatic replenishment measures without stopping the machine.

[0020] Reference Figures 1-7 An automatic material replenishment device for a packaging production line includes a mounting frame 1 with a circular hole. A feeding hopper 4 is bolted into the circular hole. An indicator light 3 is bolted to the outside of the mounting frame 1. Two symmetrical storage cylinders 2 are arranged on the upper side of the mounting frame 1. A dual-channel replenishment module 5 is arranged on the outside of the two storage cylinders 2. A non-destructive unblocking module 6 is arranged on the feeding hopper 4. The dual-channel replenishment module 5 includes a photoelectric sensor 501 and an ultrasonic sensor 502. Both the device 501 and the ultrasonic sensor 502 are mounted on the feeding hopper 4. A sliding groove is provided on the upper side of the mounting frame 1. The inner walls of both sides of the sliding groove are connected to the slide rails 503 by bolts. The same fixed frame 504 is slidably connected in the two slide rails 503. The bottom of the fixed frame 504 is slidably connected to the bottom inner wall of the sliding groove. Two symmetrical slots are provided on the fixed frame 504. The inner walls of the slots are connected to the stabilizing frames 505 by bolts. The outside of the two storage cylinders 2 are respectively inserted into the two stabilizing frames 505.

[0021] Specifically, the device utilizes a dual-channel feeding module 5 to address the pain point of existing packaging production lines requiring shutdown for feeding. By switching between two modular storage cylinders 2 and combining one in use with one as a backup, it not only achieves complete decoupling of the feeding process from the production process but also significantly reduces equipment downtime, improves continuous operation rate, and enhances production line efficiency.

[0022] Reference Figure 3 , Figure 4 and Figure 5In a preferred embodiment, the fixing frame 504 has multiple symmetrical circular openings, each with a slidably connected positioning pin 511. Each positioning pin 511 is slidably connected to an outer bracket 514. The bottom of each outer bracket 514 is bolted to the upper side of the fixing frame 504. Each positioning pin 511 is surrounded by a spring 515, one end of which is bolted to the outside of a positioning pin 511 on the same side, and the other end is bolted to the outside of an outer bracket 514 on the same side. Both stabilizing frames 505 are bolted to the outside of anti-tilt hoops 517. The inner walls of the anti-tilt hoops 517 are connected to the outside of the storage cylinder 2. The sliding connection has multiple symmetrical docking grooves 512 on the bottom inner wall of the chute, and each docking groove 512 is equipped with a contact sensor 513. The inner walls of the two stabilizing frames 505 are each bolted with two equidistant soft guide members 518. The inner walls of the soft guide members 518 are slidably connected to the outside of the storage cylinder 2 on the same side. The bottom of each of the two stabilizing frames 505 has a through hole, one of which is located on the same axis as the feeding hopper 4. The bottom inner walls of the stabilizing frames 505 are each bolted with a sealing gasket 516, and the bottom of the storage cylinder 2 contacts the upper side of the sealing gasket 516. A cylinder cover 519 is inserted into the upper side of each of the two storage cylinders 2. Both storage cylinders 2 are equipped with observation windows 520. Each cylinder has a cutting groove located below the observation window 520. A drawer plate 521 is slidably connected within each groove. Two symmetrical guide rails are bolted to the exterior of each storage cylinder 2. A common isolation plate 523 is slidably connected within the two guide rails on the same side. A pull ring 522 is bolted to the side of each drawer plate 521 away from the storage cylinder 2. A boss is bolted to the exterior of each isolation plate 523. A transmission rod 524 is bolted to the upper side of each boss. A boss is slidably connected to the exterior of each transmission rod 524. The opposite side of each boss to the exterior of the storage cylinder 2 is bolted to both transmission rods 524. The rod 524 is surrounded by springs 525. One end of each spring 525 is bolted to the upper side of the boss, and the other end is bolted to the bottom of the boss. The upper side of the fixing frame 504 is bolted to a connecting plate 506. One side of the mounting frame 1 is bolted to two symmetrical support frames 507. Each support frame 507 is equipped with a hydraulic rod 508. The output end of each hydraulic rod 508 is bolted to one side of the connecting plate 506. The outside of the mounting frame 1 is bolted to two symmetrical limiting frames 509. Each limiting frame 509 is equipped with a soft pad 510. The outside of one of the soft pads 510 contacts the outside of the fixing frame 504.

[0023] In specific application scenarios, the dual-channel feeding module 5 is mainly suitable for the dual-channel material distribution stage in the dual-channel feeding process. That is, the dual-channel feeding module 5 uses the stabilizing frame 505, the storage cylinder 2, the hydraulic rod 508, and the fixing frame 504 to achieve near-zero-second switching and continuous production without stopping the machine. The storage cylinder 2 serves as a hot backup for the left and right bins. When the material in the current working bin is exhausted, it automatically switches to the backup bin for material discharge, transforming the feeding action from an online operation to an offline operation. During the replenishment of the backup bin, the main bin continues to supply material normally, and the equipment cycle is not disturbed in any way, thus improving the overall capacity of the packaging line. The cylinder cover 519, the drawer plate 521, the observation window 520, and the isolation plate 523 form a drawer-type structure, allowing the operator to pull the entire bin module out to the outside of the equipment for filling, reducing the frequency of manual intervention and the intensity of work. The operator does not need to put their body into the equipment, completely avoiding the risk of mechanical pinching. The eccentric structure design on the storage cylinder 2 also reduces the risk of material blockage in the storage cylinder 2 and improves the smoothness of material supply.

[0024] Reference Figure 6 and Figure 7 In a preferred embodiment, the non-invasive unblocking module 6 includes multiple nozzles 601 circumferentially distributed. The feeding hopper 4 has multiple circumferentially distributed notches, the inner walls of which are bolted to the outer walls of the nozzles 601 on the same side. A common air guide pipe 604 is provided on the outer walls of the multiple nozzles 601. A pulse pipe 605 is bolted to the end of the air guide pipe 604 away from the nozzles 601. An airtight sleeve 606 is bolted to the inner wall of the pulse pipe 605. A piston 607 is slidably connected to the inner wall of the airtight sleeve 606. An annular groove is formed on the outer wall of the piston 607, and a sealing ring 609 is bolted to the inner wall of the annular groove. The outer wall of the sealing ring 609 is connected to the airtight sleeve 606. The inner wall of the piston 607 is slidably connected, and multiple circumferentially distributed air guide chambers 608 are provided on the side of the piston 607 away from the sealing ring 609; the inner wall of the pulse tube 605 is bolted to a support frame 610, and a spring 611 is bolted to the side of the support frame 610 near the piston 607. The other end of the spring 611 is bolted to the outside of the piston 607, and a fine hole is provided on the side of the pulse tube 605 away from the air guide tube 604. A short tube is bolted to the fine hole, and a pressure stabilizing chamber 602 is bolted to the end of the short tube away from the pulse tube 605; the bottom of the mounting bracket 1 is bolted to an air pump 603, and the output end of the air pump 603 is connected to the pressure stabilizing chamber 602 through a conduit.

[0025] In specific application scenarios, the non-damaging unblocking module 6 is mainly used in the non-damaging unblocking process. That is, the non-damaging unblocking module 6 uses the air pump 603, pressure stabilizing chamber 602, airtight sleeve 606, piston 607, air guide chamber 608 and spring 611 to make the nozzle 601 generate pulse airflow to impact the material blocked in the feeding hopper 4, so that the mutually squeezed materials are gradually delivered, and the balance formed between the materials is disrupted. Thus, the blockage in the feeding hopper 4 is unblocked without damaging the materials, reducing the failure rate of the device and improving the smoothness of feeding.

[0026] Working principle: Two storage cylinders 2 containing materials are inserted into the stabilizing frame 505 respectively. At this time, one of the storage cylinders 2 is coaxial with the feeding hopper 4. By grasping the pull ring 522, the two pull plates 521 are pulled out from the stabilizing frame 505. The isolation plate 523 falls rapidly under the elastic force of the spring 525, closing the groove left after the pull plates 521 are pulled out. The material in the storage cylinder 2 coaxial with the feeding hopper 4 will continuously fall into the feeding hopper 4 as the production line runs. The material in the other storage cylinder 2 remains stationary due to the closure of the mounting frame 1. As the material in the storage cylinder 2 coaxial with the feeding hopper 4 is exhausted, the photoelectric sensor 501 can no longer detect light obstruction, and the ultrasonic sensor 502 detects... If no physical material is detected, the hydraulic rod 508 is activated. The output end of the hydraulic rod 508 extends, pushing the fixing frame 504 to slide in the slide rail 503. This causes the positioning pin 511 to overcome the elastic force of the spring 515, rise, and separate from the docking groove 512 in its original position, moving with the fixing frame 504. After the fixing frame 504 moves away from the stabilizing frame 505 containing the empty storage cylinder 2, the other storage cylinder 2 filled with material is pushed above the feeding hopper 4. As the positioning pin 511 is inserted into the docking groove 512 near the feeding hopper 4 under the elastic force of the spring 515, the bottom of the positioning pin 511 will contact the contact sensor 513, and the indicator light 3 will light up. At this time, the storage cylinder 2 is once again aligned with the feeding hopper 4. The shaft conveys the material into the feeding hopper 4. The operator removes the empty storage cylinder 2 from the stabilizing frame 505 and inserts a new, fully-filled storage cylinder 2 back into the stabilizing frame 505. During the material conveying process from the feeding hopper 4 to the production line, if the photoelectric sensor 501 detects light obstruction and the ultrasonic sensor 502 detects solid matter, but the production line issues a material shortage alarm, the air pump 603 will be activated. The air pump 603 delivers air to the pressure stabilizing chamber 602 for storage, causing the air pressure in the pressure stabilizing chamber 602 to gradually increase. Since the pressure stabilizing chamber 602 is connected to the pulse tube 605, the air pressure in the pressure stabilizing chamber 602 will push the piston 607 to overcome the elastic force of the spring 611. As the piston 607 moves gradually on the airtight sleeve 606, it moves to a certain extent on the airtight sleeve 606, causing the air guide chamber 608 to disengage from the airtight sleeve 606. This allows the air in the pressure stabilizing chamber 602 to be transported through the air guide chamber 608 to the pulse tube 605, and finally to the nozzle 601 through the air guide tube 604. After the pressure stabilizing chamber 602 is rapidly depressurized, the remaining air pressure is less than the elastic force of the spring 611. The piston 607 retracts, and the air guide chamber 608 is resealed by the airtight sleeve 606. As the air pressure in the pressure stabilizing chamber 602 increases again, the pulse tube 605 will perform the next gas delivery, causing the nozzle 601 to perform a pulsed gas impact on the material blocked in the feeding hopper 4.

[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic material replenishment device for a packaging production line, comprising a mounting frame (1), characterized in that, The mounting frame (1) has a circular hole, and a feeding hopper (4) is fixedly connected inside the circular hole. An indicator light (3) is fixedly connected to the outside of the mounting frame (1). Two symmetrical storage cylinders (2) are provided on the upper side of the mounting frame (1). The two storage cylinders (2) are provided with the same dual-channel feeding module (5). A non-destructive unblocking module (6) is provided on the feeding hopper (4). The dual-channel feeding module (5) includes a photoelectric sensor (501) and an ultrasonic sensor (502). The photoelectric sensor (501) and the ultrasonic sensor (502) are... Sensors (502) are all set on the feeding hopper (4). A sliding groove is opened on the upper side of the mounting frame (1). Slide rails (503) are fixedly connected to the inner walls of both sides of the sliding groove. The same fixed frame (504) is slidably connected in the two slide rails (503). The bottom of the fixed frame (504) is slidably connected to the bottom inner wall of the sliding groove. Two symmetrical slots are opened on the fixed frame (504). Stable frames (505) are fixedly connected to the inner walls of the slots. The outside of the two storage cylinders (2) are respectively inserted into the two stable frames (505).

2. The automatic material replenishment device for a packaging production line according to claim 1, characterized in that, The fixed frame (504) has multiple symmetrical circular openings, each with a slidably connected positioning pin (511). Each positioning pin (511) is slidably connected to an outer bracket (514). The bottom of the outer bracket (514) is fixedly connected to the upper side of the fixed frame (504). Each positioning pin (511) is surrounded by a spring (515). One end of the spring (515) is fixedly connected to the outside of the positioning pin (511) on the same side, and the other end is fixedly connected to the outside of the outer bracket (514) on the same side. Each of the two stabilizing frames (505) is fixedly connected to an anti-slant hoop (517). The inner wall of the anti-slant hoop (517) is slidably connected to the outside of the storage cylinder (2). The bottom inner wall of the chute has multiple symmetrical docking grooves (512). Each docking groove (512) is equipped with a contact sensor (513).

3. The automatic material replenishment device for a packaging production line according to claim 2, characterized in that, The inner walls of the two stabilizing frames (505) are fixedly connected to two equidistant soft guides (518). The inner walls of the soft guides (518) are slidably connected to the outside of the storage cylinder (2) on the same side. The bottom of the two stabilizing frames (505) is provided with through holes. One of the through holes is located on the same axis as the feeding hopper (4). The bottom inner walls of the stabilizing frames (505) are fixedly connected to sealing gaskets (516). The bottom of the storage cylinder (2) is in contact with the upper side of the sealing gaskets (516).

4. The automatic material replenishment device for a packaging production line according to claim 3, characterized in that, A cylinder cover (519) is inserted into the upper side of the two storage cylinders (2). An observation window (520) is opened on the outside of each storage cylinder (2). A cutting groove is opened on each storage cylinder (2). The cutting groove is located below the observation window (520). A pull plate (521) is slidably connected in each of the two cutting grooves. Two symmetrical guide rails are fixedly connected to the outside of each of the two storage cylinders (2). The same isolation plate (523) is slidably connected in the two guide rails on the same side.

5. The automatic material replenishment device for a packaging production line according to claim 4, characterized in that, Both of the two draw plates (521) are fixedly connected to a pull ring (522) on the side away from the storage cylinder (2). The outer side of the isolation plate (523) is fixedly connected to a boss. The upper side of the boss is fixedly connected to a transmission rod (524). The outer side of the transmission rod (524) is slidably connected to a boss. The boss is fixedly connected to the side opposite to the outer side of the storage cylinder (2). The outer side of both transmission rods (524) is surrounded by a second spring (525). One end of the second spring (525) is fixedly connected to the upper side of the boss, and the other end is fixedly connected to the bottom of the boss.

6. The automatic material replenishment device for a packaging production line according to claim 2, characterized in that, The upper side of the fixed frame (504) is fixedly connected to a connecting plate (506), and two symmetrical support frames (507) are fixedly connected to one side of the mounting frame (1). Each support frame (507) is provided with a hydraulic rod (508), and the output end of each hydraulic rod (508) is fixedly connected to one side of the connecting plate (506). Two symmetrical limiting frames (509) are fixedly connected to the outside of the mounting frame (1). Each limiting frame (509) is provided with a soft pad (510), and the outside of one of the soft pads (510) is in contact with the outside of the fixed frame (504).

7. The automatic material replenishment device for a packaging production line according to claim 1, characterized in that, The non-invasive unblocking module (6) includes multiple nozzles (601) distributed circumferentially. The feeding hopper (4) has multiple notches distributed circumferentially. The inner walls of the notches are fixedly connected to the outside of the nozzles (601) on the same side. The outside of the multiple nozzles (601) is provided with the same air guide pipe (604). The end of the air guide pipe (604) away from the nozzles (601) is fixedly connected to a pulse pipe (605).

8. The automatic material replenishment device for a packaging production line according to claim 7, characterized in that, An airtight sleeve (606) is fixedly connected to the inner wall of the pulse tube (605). A piston (607) is slidably connected to the inner wall of the airtight sleeve (606). An annular groove is provided on the outside of the piston (607). A sealing ring (609) is fixedly connected to the inner wall of the annular groove. The outside of the sealing ring (609) is slidably connected to the inner wall of the airtight sleeve (606). A plurality of air guide chambers (608) are provided on the side of the piston (607) away from the sealing ring (609) in a circumferentially equidistant manner.

9. The automatic material replenishment device for a packaging production line according to claim 8, characterized in that, A support frame (610) is fixedly connected to the inner wall of the pulse tube (605). A spring three (611) is fixedly connected to the side of the support frame (610) near the piston (607). The other end of the spring three (611) is fixedly connected to the outside of the piston (607). A fine hole is opened on the side of the pulse tube (605) away from the air guide tube (604). A short tube is fixedly connected in the fine hole. A pressure stabilizing chamber (602) is fixedly connected to the end of the short tube away from the pulse tube (605).

10. An automatic material replenishment device for a packaging production line according to claim 9, characterized in that, An air pump (603) is fixedly connected to the bottom of the mounting bracket (1), and the output end of the air pump (603) is connected to the pressure stabilizing chamber (602) through a conduit.

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