An automatic packaging production line for paper cups and paper lids

Abstract

The present invention discloses an automatic packaging production line for paper cups and paper lids, which relates to the technical field of paper cup packaging. The packaging mechanism comprises a first clamping block and a second clamping block which are provided with a heat-sealing heating element and which move away from or approach each other under the drive of a driving mechanism. The first clamping block is provided with a pushing groove with a built-in elastic pulling block, a magnetic pushing plate and an electromagnet, and the magnetic pushing plate is connected to a slitting blade extending toward the second clamping block. A fixed plate with a scraping groove is provided in the pushing groove. The present invention pulls the slitting blade back into the first clamping block by the elastic pulling block, thereby avoiding the problem that the slitting blade extends out of the first clamping block in advance to cut the heat shrink film and cannot be heat-sealed. After the heat shrink film is heat-sealed, the electromagnet and the magnetic pushing plate are coordinated to push the slitting blade out of the first clamping block to cut the heat shrink film. The fixed plate with the scraping groove also scrapes off heat shrink film fragments adhering to the slitting blade, thereby avoiding the problem that the slitting blade is adhering to too many heat shrink film fragments to affect its cutting performance.

Description

Technical Field

[0001] The present invention relates to the technical field of paper cup packaging, and in particular to an automatic packaging production line for paper cups and paper lids. Background Art

[0002] During the paper cup production process, the cup tubes need to be sealed and packaged. Traditional packaging methods mostly rely on manual processing, placing the cup tubes in the packaging bag and manually heat-sealing them. This packaging method has low packaging efficiency and high labor intensity, making it unsuitable for large-scale automated production and processing.

[0003] In the prior art, an automatic paper cup packaging machine with the publication number "CN211391913U" includes a frame, a reeling roller is installed on one side of the frame, a fixed rod is fixed in the middle of the frame, two film-splitting rollers are installed on the fixed rod, and two sets of lead screws are rotatably installed on the lower part of the frame. The ends of each set of lead screws are connected to a servo motor, and fixed plates are connected to the symmetrical positions on both sides of the lead screw through lead screw sliders, and heat-sealing blades are fixed on the opposite sides of the two fixed plates. Pulleys are installed on the front and rear ends of the bottom of the frame through brackets, and the pulleys are connected by a conveyor belt. The lead screw is driven by the servo motor to make the two fixed plates approach each other, thereby automatically completing the heat sealing and slitting processing of the cup tube. The cut cup tube falls on the conveyor belt and is transported out for collection, thereby improving the cup tube packaging efficiency and reducing the labor intensity of workers.

[0004] However, the existing technology still has major defects. For example, the slitting blade in the existing technology protrudes from the heat-sealing blade. Therefore, when the slitting blade cuts the packaging film, the heat-sealing blade cannot clamp the packaging film, so that the packaging film containing the paper cup inside is easily separated from the heat-sealing blade, resulting in the heat-sealing blade being unable to heat-seal the packaging film. In addition, the slitting blade will be attached to the packaging film fragments during the process of cutting the packaging film, which will adversely affect the slitting blade's cutting of the packaging film in the long run. Summary of the Invention

[0005] The object of the present invention is to provide an automatic packaging production line for paper cups and paper lids to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The packaging machine of claim 1 further comprising a packaging mechanism for packaging the assembled paper cups and paper lids, the packaging mechanism comprising two unwinding rollers arranged at intervals, and a heat shrink film being stretched and laid on the same side of the two unwinding rollers. A first clamping block and a second clamping block are provided on the other side of the unwinding rollers, which move away from or approach each other under the drive mechanism, and end surfaces of the first clamping block and the second clamping block approaching each other are both inlaid with heat-sealing heaters, a pushing groove is provided in the first clamping block, a magnetic push plate is slidably provided in the pushing groove, and the magnetic push plate is fixedly connected to a slitting blade extending toward the second clamping block, an electromagnet is provided in the pushing groove, and the electromagnet pushes the magnetic push plate to slide toward the second clamping block so that the slitting blade passes through the heat-sealing heater of the first clamping block and is inserted into the heat-sealing heater of the second clamping block, and an elastic pulling block is provided in the pushing groove for pulling the magnetic push plate away from the second clamping block;

[0008] A fixed plate close to the second clamping block is fixedly arranged in the pushing groove, and the fixed plate is provided with a scraping groove for the slitting blade to slide through, and the fixed plate divides the pushing groove into a blast chamber close to the second clamping block and an air inlet chamber away from the second clamping block. The side of the air inlet chamber close to the fixed plate is connected to the outside through a one-way valve, and the side of the fixed plate close to the blast chamber is equipped with an air jet pipe connected to the air inlet chamber, and the blast chamber is connected to a slag discharge port, and a pushing plate sliding along the direction close to the fixed plate is provided in the air inlet chamber, and the pushing plate is connected to a flexible cleaning block and an elastic pushing block that pushes the pushing plate away from the fixed plate, and the pushing plate slides in the direction close to the fixed plate so that the flexible cleaning block is inserted into the slag discharge port.

[0009] Preferably, auxiliary rollers are provided outside the two unwinding rollers, and the heat shrink film slides over the auxiliary rollers.

[0010] Preferably, the driving mechanism is a first linear drive motor, and the ends of the first clamping block and the second clamping block that are away from each other are installed one by one on the output ends of the two first linear drive motors.

[0011] Preferably, the pushing groove opens at one end of the first clamping block away from the second clamping block, and a sealing plate is fixedly installed at the opening of the pushing groove, and both ends of the elastic pulling block are respectively fixedly connected to the side walls of the sealing plate and the magnetic push plate close to each other, the electromagnet is fixedly installed on the side wall of the sealing plate close to the magnetic push plate, and the side wall of the magnetic push plate close to the electromagnet is fixedly connected to a magnetic block that magnetically repels the electromagnet.

[0012] Preferably, the sealing plate is fixedly connected to a guide rod that slides through the elastic pull block and the magnetic push plate, and one end of the guide rod away from the sealing plate is fixedly connected to the fixed plate.

[0013] Preferably, the inner wall of the pushing groove located in the air inlet chamber area is connected with a slide groove extending in a direction away from the fixed plate, and the pushing plate is slidably inserted into the slide groove, the middle part of the slag discharge port and the slide groove are connected through a push-pull groove, and the flexible cleaning block is slidably arranged in the push-pull groove, and the pushing plate is slidably inserted into the push-pull groove and fixedly connected to the flexible cleaning block through a connecting plate, and the two ends of the elastic pushing block are respectively fixedly connected to the side walls of the pushing plate and the fixed plate close to each other.

[0014] Preferably, there are multiple chutes, and the middle part of the slag discharge port and the multiple chutes are connected through the same push-pull groove, and the pushing plates in the multiple chutes are slidably inserted into the pushing grooves and fixedly connected to the same connecting plate.

[0015] Preferably, the slag discharge port is opened on the outer wall of the first clamping block toward the heat shrink film, a blower is fixedly installed on the second clamping block, and the second clamping block is provided with an air supply channel with one end connected to the blowing end of the blower and the other end of the opening on the outer wall of the second clamping block toward the heat shrink film.

[0016] Preferably, the assembly mechanism includes a second linear drive motor with an output end extending toward the paper cup, and a negative pressure suction cup for adsorbing the paper cover is installed at the output end of the second linear drive motor.

[0017] Preferably, the assembly mechanism further includes an upper mounting plate and a lower mounting plate which are arranged up and down and fixedly connected by a fixed connecting rod, the paper cup is placed on the lower mounting plate, and the second linear drive motor is fixedly mounted on the lower end surface of the upper mounting plate.

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

[0019] The automatic packaging production line for paper cups and paper lids of the present invention uses an elastic pulling block to pull the slitting blade back into the first clamping block, thereby preventing the slitting blade from prematurely extending and cutting the heat shrink film and failing to heat seal it. After the heat shrink film is heat sealed, the electromagnet and the magnetic push plate cooperate to push the slitting blade out of the first clamping block to cut the heat shrink film. Furthermore, by providing a fixed plate with a scraping groove, a one-way valve, an air jet pipe, and a slag discharge port, heat shrink film fragments adhering to the slitting blade are scraped off and discharged, thereby preventing the slitting blade from being adhering to excessive heat shrink film fragments and affecting its cutting performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view schematic diagram of the packaging mechanism of the present invention;

[0021] Figure 2 It is a top view schematic diagram of the packaging mechanism in the present invention;

[0022] Figure 3 This is a schematic diagram of the packaging mechanism of the present invention starting to pack paper cup lids;

[0023] Figure 4 This is a schematic diagram of heat-sealing and cutting the paper cover of the packaged paper cup in the present invention;

[0024] Figure 5 A three-dimensional schematic diagram of the first clamping block and the second clamping block in the present invention;

[0025] Figure 6 Schematic diagram of the first clamping block and the second clamping block clamping the heat shrink film in the present invention;

[0026] Figure 7 for Figure 6 Schematic diagram of the frame of the first clamping block;

[0027] Figure 8 A three-dimensional schematic diagram of the slitting blade and its connection structure in the present invention;

[0028] Figure 9 A three-dimensional schematic diagram of a flexible cleaning block and its connection structure in the present invention;

[0029] Figure 10 Schematic diagram of the slitting blade extending to cut the heat shrink film in the present invention;

[0030] Figure 11 It is a front view schematic diagram of the assembly structure in the present invention.

[0031] In the figure: 1 unwinding roller, 2 heat shrink film, 3 first clamping block, 31 pushing groove, 32 slag discharge port, 33 chute, 4 second clamping block, 5 heat sealing heating element, 6 magnetic push plate, 61 magnetic block, 7 slitting blade, 8 electromagnet, 9 elastic pulling block, 10 fixed plate, 11 one-way valve, 12 air injection pipe, 13 pushing plate, 14 elastic pushing block, 15 flexible cleaning block, 16 auxiliary roller, 17 first linear drive motor, 18 sealing plate, 19 guide rod, 20 connecting plate, 21 blower, 22 second linear drive motor, 23 negative pressure suction cup, 24 lower mounting plate, 25 upper mounting plate, 26 fixed connecting rod. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1-11 , the present invention provides a technical solution:

[0034] Example 1:

[0035] An automatic packaging production line for paper cups and paper lids includes an assembly mechanism for assembling paper cups and paper lids, and a packaging mechanism for packaging the assembled paper cups and paper lids. The assembly mechanism includes an upper mounting plate 25 and a lower mounting plate 24, which are arranged up and down and fixedly connected by a fixed connecting rod 26. The paper cup is placed on the lower mounting plate 24. A second linear drive motor 22 is fixedly mounted on the lower end surface of the upper mounting plate 25, and the output end of the second linear drive motor 22 faces downward and directly toward the paper cup. A negative pressure suction cup 23 is fixedly connected to the lower end of the output end of the second linear drive motor 22. When assembling the paper cups and paper lids, the paper cups are first placed on the lower mounting plate 24. The paper cover is placed on the lower mounting plate 26 and facing the output end of the second linear drive motor 22. The paper cover is then placed on the lower end of the negative pressure suction cup 23. The negative pressure suction cup 23 is turned on so that the negative pressure suction cup 23 sucks the paper cover. The second linear drive motor 22 is then started so that the negative pressure suction cup 23 moves downward under the drive of the second linear drive motor 22. This allows the paper cover to be covered on the paper cup, completing the assembly of the paper cup and paper cover. After the paper cup and paper cover are assembled, the negative pressure suction cup 23 is closed. The second linear drive motor 22 then drives the negative pressure suction cup 23 to reset upward. The assembled paper cup and paper cover are removed, and a new paper cup is placed on it to start the next round of paper cup and paper cover assembly.

[0036] The packaging mechanism includes two unwinding rollers 1 spaced apart on the left and right sides, and the heat shrink film 2 is stretched and laid on the upper side of the two unwinding rollers 1. Specifically, the left and right ends of the heat shrink film 2 are respectively installed on two tensioning wheels. The tensioning wheels are rotated to release or retract the heat shrink film 2, so that the heat shrink film 2 is stretched and laid on the upper side of the two unwinding rollers 1. It is further configured to include two auxiliary rollers 16 spaced apart on the left and right sides, and the two unwinding rollers 1 are located between the two auxiliary rollers 16. The heat shrink film 2 first passes through the lower side of the auxiliary roller 16 and then passes through the upper side of the unwinding roller 1. By adding two auxiliary rollers The roller 16 improves the tensioning effect of the heat shrink film 2. A first clamping block 3 and a second clamping block 4 are provided below the unwinding roller 1. The first clamping block 3 and the second clamping block 4 are driven by a driving mechanism to move away from or approach each other. The first clamping block 3 and the second clamping block 4 are also spaced apart from each other. The driving mechanism is a first linear drive motor 17. The ends of the first clamping block 3 and the second clamping block 4 that are away from each other are installed one by one on the output ends of the two first linear drive motors 17. The end surfaces of the first clamping block 3 and the second clamping block 4 that are close to each other are both inlaid with heat sealing heaters 5. The heat sealing heaters 5 can be thermocouples.

[0037] When the assembled paper cup lid needs to be packaged, the paper cup lid is placed on the heat shrink film 2 between the two unwinding rollers 1, and then the paper cup lid is pushed downward so that the paper cup lid presses the heat shrink film 2 downward. The tensioning wheel releases more heat shrink film 2 due to the pressure of the heat shrink film 2, so that the heat shrink film 2 can wrap the paper cup lid. When the paper cup lid moves downward to below the middle of the first clamping block 3 and the second clamping block 4, the first clamping block 3 and the second clamping block 4 are driven by the first linear drive motor 17 to approach each other, so that the first clamping block 3 and the second clamping block 4 clamp the heat shrink film 2 above the paper cup lid. The heat sealing heater 5 heats the heat shrink film 2 above the paper cup lid so that the heat shrink film 2 between the first clamping block 3 and the second clamping block 4 adheres, thereby completing the preliminary packaging of the paper cup lid.

[0038] The first clamping block 3 is provided with a pushing groove 31, and a magnetic push plate 6 is slidingly provided in the pushing groove 31, and the magnetic push plate 6 is fixedly connected to a slitting blade 7 extending horizontally toward the second clamping block 4. An electromagnet 8 is provided in the pushing groove 31, and the electromagnet 8 can be electrically connected to a control switch to control the opening and closing of the electromagnet 8. An elastic pulling block 9 is provided in the pushing groove 31 for pulling the magnetic push plate 6 away from the second clamping block 4. In the process of the first clamping block 3 and the second clamping block 4 approaching each other, the slitting blade 7 is retracted into the pushing groove 31 due to the pulling of the elastic pulling block 9, so as to prevent the slitting blade 7 from extending in advance before the first clamping block 3 and the second clamping block 4 have not clamped the heat shrink film 2 for heat sealing, resulting in the subsequent inability to heat seal the heat shrink film 2 packaged on the paper cover of the paper cup. The problem is that after the first clamping block 3 and the second clamping block 4 clamp the heat shrink film 2 above the paper cup lid and perform heat sealing, the electromagnet 8 is energized with magnetism and pushes the magnetic push plate 6 to slide in the direction close to the second clamping block 4, so that the slitting blade 7 extends out of the first clamping block 3 and cuts the heat shrink film 2 between the first clamping block 3 and the second clamping block 4, thereby separating the heat shrink film 2 wrapped around the paper cup lid from the heat shrink film 2 on the unwinding roller 1, and then the unwrapped area at the end of the paper cup lid is separately packaged. It will not be described in detail here. After the slitting blade 7 cuts the heat shrink film 2, the first clamping block 3 and the second clamping block 4 move away from each other to reset, and the electromagnet 8 is de-energized again, so that the slitting blade 7 is pulled back into the pushing groove 31 again under the pull of the elastic pull block 9;

[0039] As an embodiment, the pushing groove 31 opens at one end of the first clamping block 3 away from the second clamping block 4, that is, the pushing groove 31 opens at the left end of the first clamping block 3, and a sealing plate 18 is fixedly installed at the opening of the pushing groove 31, and the two ends of the elastic pull block 9 are respectively fixedly connected to the side walls of the sealing plate 18 and the magnetic push plate 6 close to each other, the electromagnet 8 is fixedly installed on the side wall of the sealing plate 18 close to the magnetic push plate 6, and the side wall of the magnetic push plate 6 close to the electromagnet 8 is fixedly connected with a magnetic block 61 that magnetically repels the electromagnet 8. Through the magnetic cooperation between the electromagnet 8 and the magnetic block 61, the electromagnet 8 pushes the magnetic push plate 6 to slide in the direction close to the second clamping block 4, so that the slitting blade 7 cuts the heat shrink film 2, and the heat sealing heating element 5 on the second clamping block 4 is provided with a blade slot for inserting the slitting blade 7.

[0040] Example 2:

[0041] The second embodiment is based on the first embodiment, and a mechanism for removing dirt from the slitting blade 7 is added, namely: a fixed plate 10 close to the second clamping block 4 is fixedly set in the pushing groove 31, that is, the fixed plate 10 is set on the right side of the pushing groove 31, and the fixed plate 10 is provided with a scraping groove for the slitting blade 7 to slide through, and the fixed plate 10 divides the pushing groove 31 into an air blast chamber close to the second clamping block 4 and an air inlet chamber away from the second clamping block 4. The slitting blade 7 passes through the scraping groove in the process of extending and retracting to the pushing groove 31. When the slitting blade 7 is retracted to the pushing groove 31, the scraping groove is opened. During the process of the groove 31, the slitting blade 7 and the inner wall of the scraping groove are in friction contact, thereby removing the heat shrink film fragments attached to the slitting blade 7, and the scraped heat shrink film fragments fall into the blast chamber, wherein the sealing plate 18 is fixedly connected to a guide rod 19 that slides through the elastic pull block 9 and the magnetic push plate 6, and the end of the guide rod 19 away from the sealing plate 18 is fixedly connected to the fixed plate 10. The setting of the guide rod 19 improves the stability of the magnetic push plate 6 in the left and right sliding process, and the guide rod 19 provides axial support for the elastic pull block 9 to avoid the problem of bending of the elastic pull block 9;

[0042] The side of the air inlet chamber close to the fixed plate 10 is connected to the outside through a one-way valve 11. The setting of the one-way valve 11 allows outside air to enter the air inlet chamber through the one-way valve 11, while the air in the air inlet chamber cannot enter the external environment through the one-way valve 11. A jet pipe 12 connected to the air inlet chamber is installed on the side of the fixed plate 10 close to the blast chamber, and the blast chamber is connected to a slag discharge port 32. The outer wall of the magnetic push plate 6 slides against the inner wall of the pushing groove 31, so that when the magnetic push plate 6 slides to the right to approach the second clamping block 4, the magnetic push plate 6 presses the air in the air inlet chamber into the blast chamber through the jet pipe 12, and the air flows in the blast chamber and is discharged from the slag discharge port 32. In the process of being discharged from the slag discharge port 32, the air brings out the heat shrink film fragments in the blast chamber together, avoiding the problem that the heat shrink film fragments accumulated in the blast chamber cannot be discharged;

[0043] Furthermore, the opening of the slag discharge port 32 on the outer wall of the first clamping block 3 faces away from the heat shrink film 2, that is, the slag discharge port 32 is opened on the lower outer wall of the first clamping block 3, and the air in the pushing groove 31 is heated by the heating action of the heat sealing heating element 5. The heated hot air is blown onto the heat shrink film 2 wrapped around the paper cup cover through the slag discharge port 32. The heat shrink film 2 shrinks due to the heat and adheres to the paper cup cover, thereby improving the packaging effect of the paper cup cover. A blower 21 is fixedly installed on the second clamping block 4, and the second clamping block 4 is provided with an end connected to the heat shrink film 2. The blower 21 is connected to the blower end, and the other end is opened on the outer wall of the second clamping block 4 toward the air supply channel away from the heat shrink film 2, that is, the air supply channel opens on the lower outer wall of the second clamping block 4. The air blown by the blower 21 flows through the air supply channel and is heated by the heat sealing heating element 5 on the second clamping block 4. The heated hot air is blown onto the heat shrink film 2 wrapped around the paper cup cover, further improving the heating effect of the heat shrink film 2 wrapped around the paper cup cover, thereby further improving the packaging effect of the heat shrink film 2 on the paper cup cover.

[0044] Furthermore, a push plate 13 is provided in the air inlet chamber, which is slidable in the direction close to the fixed plate 10, and the push plate 13 is connected to a flexible cleaning block 15 and an elastic push block 14 that pushes the push plate 13 away from the fixed plate 10. The push plate 13 slides in the direction close to the fixed plate 10 so that the flexible cleaning block 15 is inserted into the slag discharge port 32. When the magnetic push plate 6 does not move to the push plate 13, the push plate 13 remains stable under the support of the elastic push block 14, and the flexible cleaning block 15 connected to the push plate 13 also remains stable and leaves the slag discharge port. When the magnetic push plate 6 moves to the pushing plate 13, the magnetic push plate continues to move and squeezes the pushing plate 13, causing the pushing plate 13 to slide in the direction close to the fixed plate 10. During the sliding process, the pushing plate 13 drives the flexible cleaning block 15 to move together, so that the flexible cleaning block 15 is inserted into the slag discharge port 32. The flexible cleaning block 15 is deformed in the slag discharge port 32 and fills the slag discharge port 32, thereby squeezing out the heat shrink film fragments remaining in the slag discharge port 32, thereby avoiding the problem of heat shrink film fragments accumulating in the slag discharge port 32 and causing the slag discharge port 32 to be blocked;

[0045] As an embodiment, the inner wall of the pushing groove 31 located in the air inlet chamber area is connected with a slide groove 33 extending in a direction away from the fixed plate 10, and the pushing plate 13 is slidably inserted into the slide groove 33, and the middle part of the slag discharge port 32 and the slide groove 33 are connected through a push-pull groove, and the flexible cleaning block 15 is slidably arranged in the push-pull groove, and the pushing plate 13 is slidably inserted into the push-pull groove and fixedly connected to the flexible cleaning block 15 through the connecting plate 20, and the two ends of the elastic pushing block 14 are respectively fixedly connected to the side walls of the pushing plate 13 and the fixed plate 10 close to each other, so that the pushing plate 13 slides in the slide groove 33 and drives the connecting plate 20 to slide together, and the connecting plate 20 is driven by the pushing plate 13 The flexible cleaning block 15 is slid downwardly toward the direction close to the flexible cleaning block 15 and squeezed into the slag discharge port. The flexible cleaning block 15 is deformed in the slag discharge port and fills the slag discharge port, thereby squeezing out the heat shrink film fragments remaining in the slag discharge port 32. In this embodiment, the number of chutes 33 is multiple and arranged in parallel, and the middle part of the slag discharge port 32 and the multiple chutes 33 are connected through the same push-pull groove, and the push plates 13 in the multiple chutes 33 are slidably inserted into the push groove and fixedly connected to the same connecting plate 20. By setting up multiple push plates 13 to drive the connecting plate 20 to slide together, the stability of the push plate 13 driving the flexible cleaning block 15 to slide into the slag discharge port 32 through the connecting plate 20 is improved.

[0046] Working Principle: When the paper cup lid moves downward to the lower part between the first clamping block 3 and the second clamping block 4, the first clamping block 3 and the second clamping block 4 approach each other, so that the first clamping block 3 and the second clamping block 4 clamp the heat shrink film 2 above the paper cup lid and heat it, thereby causing the heat shrink film 2 between the first clamping block 3 and the second clamping block 4 to adhere. Then, the electromagnet 8 is energized to have magnetism and push the magnetic push plate 6 to slide toward the second clamping block 4, causing the slitting blade 7 to extend out of the first clamping block 3 and cut the heat shrink film 2 between the first clamping block 3 and the second clamping block 4, thereby separating the heat shrink film 2 wrapped around the paper cup lid from the heat shrink film 2 on the unwinding roller 1.

[0047] When the slitting blade 7 is retracted to the pushing groove 31, the slitting blade 7 and the inner wall of the scraping groove 32 are in friction contact, thereby removing the heat shrink film fragments attached to the slitting blade 7, and the scraped heat shrink film fragments fall into the blast chamber. When the magnetic push plate 6 slides to the right to approach the second clamping block 4, the magnetic push plate 6 presses the air in the air inlet chamber into the blast chamber through the jet pipe 12, and the air flows in the blast chamber and is discharged from the slag discharge port 32. When the air is discharged from the slag discharge port 32, the heat shrink film fragments in the blast chamber are taken out together, and the magnetic push plate squeezes the pushing plate 13, causing the pushing plate 13 to slide in the direction close to the fixed plate 10. During the sliding process, the pushing plate 13 drives the flexible cleaning block 15 to move together, so that the flexible cleaning block 15 is inserted into the slag discharge port 32. The flexible cleaning block 15 is deformed in the slag discharge port 32 and fills the slag discharge port 32, thereby squeezing out the heat shrink film fragments remaining in the slag discharge port 32.

[0048] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic packaging production line for paper cups and paper lids, characterized by: The packaging mechanism comprises an assembly mechanism for assembling paper cups and paper lids, and a packaging mechanism for packaging the assembled paper cups and paper lids, the packaging mechanism comprising two unwinding rollers arranged at intervals, and the heat shrink film is stretched and laid on the same side of the two unwinding rollers, and a first clamping block and a second clamping block are provided on the other side of the unwinding rollers, which move away from or approach each other under the drive mechanism, and the end surfaces of the first clamping block and the second clamping block that are close to each other are both inlaid with heat-sealing heaters, a pushing groove is provided in the first clamping block, and a magnetic push plate is slidably provided in the pushing groove, and the magnetic push plate is fixedly connected to a slitting blade extending toward the second clamping block, an electromagnet is provided in the pushing groove, and the electromagnet pushes the magnetic push plate to slide in a direction close to the second clamping block, so that the slitting blade passes through the heat-sealing heater of the first clamping block and is inserted into the heat-sealing heater of the second clamping block, and an elastic pulling block is provided in the pushing groove for pulling the magnetic push plate away from the second clamping block; A fixing plate close to the second clamping block is fixedly arranged in the pushing groove, and the fixing plate is provided with a scraping groove for the slitting blade to slide through, and the fixing plate divides the pushing groove into a blast chamber close to the second clamping block and an air inlet chamber away from the second clamping block, a side of the air inlet chamber close to the fixing plate is connected to the outside through a one-way valve, and a jet pipe connected to the air inlet chamber is installed on the side of the fixing plate close to the blast chamber, and the blast chamber is connected to a slag discharge port, a pushing plate sliding along a direction close to the fixed plate is provided in the air inlet chamber, and the pushing plate is connected to a flexible cleaning block and an elastic pushing block that pushes the pushing plate away from the fixed plate, and the pushing plate slides in a direction close to the fixed plate so that the flexible cleaning block is inserted into the slag discharge port; The inner wall of the pushing groove located in the air inlet chamber area is connected with a chute extending in a direction away from the fixed plate, and the pushing plate is slidably inserted into the chute, the middle part of the slag discharge port and the chute are connected through a push-pull groove, and the flexible cleaning block is slidably arranged in the push-pull groove, and the pushing plate is slidably inserted into the push-pull groove and fixedly connected to the flexible cleaning block through a connecting plate, and both ends of the elastic pushing block are respectively fixedly connected to the side walls of the pushing plate and the fixed plate close to each other; There are multiple chutes, and the middle part of the slag discharge port and the multiple chutes are connected through the same push-pull groove, and the pushing plates in the multiple chutes are slidably inserted into the pushing grooves and fixedly connected to the same connecting plate.

2. The automatic packaging production line for paper cups and paper lids according to claim 1, characterized in that: Auxiliary rollers are provided outside the two unwinding rollers, and the heat shrink film slides through the auxiliary rollers.

3. The automatic packaging production line for paper cups and paper lids according to claim 1, characterized in that: The driving mechanism is a first linear driving motor, and the ends of the first clamping block and the second clamping block that are away from each other are installed one by one on the output ends of the two first linear driving motors.

4. The automatic packaging production line for paper cups and paper lids according to claim 1, characterized in that: The pushing groove opens at one end of the first clamping block away from the second clamping block, and a sealing plate is fixedly installed at the opening of the pushing groove, and the two ends of the elastic pulling block are respectively fixedly connected to the side walls of the sealing plate and the magnetic pushing plate close to each other, the electromagnet is fixedly installed on the side wall of the sealing plate close to the magnetic pushing plate, and the side wall of the magnetic pushing plate close to the electromagnet is fixedly connected to a magnetic block that magnetically repels the electromagnet.

5. The automatic packaging production line for paper cups and paper lids according to claim 4, characterized in that: The sealing plate is fixedly connected with a guide rod which slides through the elastic pull block and the magnetic push plate, and one end of the guide rod away from the sealing plate is fixedly connected to the fixed plate.

6. The automatic packaging production line for paper cups and paper lids according to claim 1, characterized in that: The slag discharge port is opened on the outer wall of the first clamping block toward the heat shrink film, a blower is fixedly installed on the second clamping block, and the second clamping block is provided with an air supply channel with one end connected to the blowing end of the blower and the other end opened on the outer wall of the second clamping block toward the heat shrink film.

7. The automatic packaging production line for paper cups and paper lids according to claim 1, characterized in that: The assembly mechanism includes a second linear drive motor with an output end extending toward the paper cup, and a negative pressure suction cup for adsorbing the paper cover is installed at the output end of the second linear drive motor.

8. The automatic packaging production line for paper cups and paper lids according to claim 7, characterized in that: The assembly mechanism also includes an upper mounting plate and a lower mounting plate which are arranged up and down and fixedly connected by a fixed connecting rod. The paper cup is placed on the lower mounting plate, and the second linear drive motor is fixedly mounted on the lower end surface of the upper mounting plate.

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