Hot melting connecting device for plastic packaging bag production and using method

Abstract

The invention discloses a hot melting connecting device for plastic packaging bag production and a using method, and relates to the technical field of hot melting devices.The hot melting connecting device comprises an aluminum buckle frame, a top plate is fixedly connected to the top of the aluminum buckle frame, side plates are fixedly connected to the front side and the rear side of the aluminum buckle frame, door plates are hinged to the left side and the right side of the aluminum buckle frame, and a fixing platform is fixedly connected to the middle of the aluminum buckle frame; a feeding port is formed in the top of the top plate, a conveying device and a feeding device are arranged above the feeding port, and two fixing frames are fixedly connected to the upper surface of the fixing platform. Plastic particle residues, generated by hot melting of a packaging bag, on the surface of the hot melting block can be scraped off through the scraping plate, then the situation that the flatness and temperature uniformity of the hot melting block are affected by the residual plastic particles can be avoided, and it can be guaranteed that the hot melting block can make better contact with the packaging bag after the residual plastic particles are scraped off; the packaging bag can be connected more firmly through hot melting, the quality problem of leakage points of the packaging bag is avoided, and the qualification rate of hot melting connection of the packaging bag is increased.

Description

Technical Field

[0001] The invention relates to the technical field of hot-melt devices, and in particular to a hot-melt connection device for producing plastic packaging bags and a use method thereof. Background Art

[0002] During the production process of packaging bags, the packaging bags may stick to the hot melt device due to reasons such as the hot melt temperature being too high or too low, the hot melt speed being too fast or too slow, and the quality of the raw materials of the packaging bags being poor. This will lead to the following problems: In order to hot-melt the packaging bags faster, most of the hot-melt connection processing of packaging bags is produced on an assembly line. If the packaging bags stick to the hot-melt device, it will affect the heat transfer of the hot-melt device, causing the subsequent hot-melt connection of the packaging bags to be loose. Because the packaging bags stick to the hot-melt device, it will affect the subsequent hot-melt connection of the packaging bags. It is necessary to manually stop the machine to remove the stuck packaging bags, resulting in processing stagnation of the hot-melt connection assembly line of the packaging bags. In addition, there will be many plastic particles in the hot-melt residue of the packaging bags, which are difficult to be discovered in time manually. Over time, many small plastic particles will adhere to the hot-melt device. When the subsequent packaging bags are hot-melted, they will be affected by the plastic particles, resulting in loose hot-melt, thereby affecting the sealing of the hot-melt packaging bags. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a hot-melt connection device for producing plastic packaging bags and a method for using the same.

[0004] The technical scheme is as follows: a hot-melt connection device for producing plastic packaging bags, comprising an aluminum buckle frame, a top plate is fixedly connected to the top of the aluminum buckle frame, side plates are fixedly connected to the front and rear sides of the aluminum buckle frame, door panels are hinged on the left and right sides of the aluminum buckle frame, a fixed platform is fixedly connected to the middle of the aluminum buckle frame, a feed port is opened on the top of the top plate, a conveying device and a feeding device are arranged above the feed port, two fixed frames are fixedly connected to the upper surface of the fixed platform, two guide rail plates are fixedly connected between the two fixed frames, four electric guide rail sliders are arranged on the two guide rail plates, two hot melters are fixedly connected between the electric guide rail sliders on the same side of the two guide rail plates, a hot melt block is fixedly connected to the side of the two hot melters close to each other, a cutting knife is fixedly connected to the side of the two hot melters close to each other, and a scraping component is arranged on the fixed frame; The scraping assembly includes a fixed plate 1 fixedly connected between two fixed frames, the two fixed plates 1 are located at the bottom of the guide rail plate, and the two fixed plates 1 are each provided with two inclined grooves, and each electric guide rail slider located at the bottom is fixedly connected with a fixed plate 2, and a lifting groove is provided on the fixed plate 2, and a guide groove is provided on the fixed plate 2, and a lifting rod is slidably connected in the lifting groove, and a movable groove is provided at one end of the lifting rod away from the lifting groove, and a slide groove is provided at one end of the lifting rod away from the lifting groove, and a sliding block is slidably connected inside the slide groove, and a sliding rod 1 is fixedly connected to one end of the sliding block close to the inclined groove, and a sliding rod 1 is fixedly connected to a side of the sliding block away from the sliding rod 1, and a sliding rod 2 is fixedly connected to a side of the sliding rod 2 that is close to the sliding rod 1, and a scraper is fixedly connected to a side of the sliding rod 2 that is close to the sliding rod 1.

[0005] Preferably, the slide rod 1 passes through the movable groove and the guide groove and extends to the inside of the inclined groove. The slide rod 1 slides inside the guide groove, the inclined groove and the movable groove respectively. The guide groove is composed of a vertical groove and a bending groove. The slide rod 2 slides inside the movable groove, and the top of the scraper is in contact with the hot melt block.

[0006] Preferably, a quantitative component is provided on the fixed frame, and the quantitative component includes a rack 1 fixedly connected to the upper surface of the electric guide rail slider at the top, four fixed rods are fixedly connected to the sides of the fixed frame close to each other, and each of the fixed rods is rotatably connected to a gear at one end away from the fixed frame, two guide rods are fixedly connected between the fixed frames, and sliding frames are slidably connected to the outer surfaces of the two guide rods, and the bottom of the sliding frames is fixedly connected to a rack 2, and a quantitative plate is fixedly connected between the two racks 2 on the same side, and the lower surface of the quantitative plate is in contact with the upper surface of the hot melt.

[0007] Preferably, the gear is meshed with the top of rack one, and the bottom of rack two is meshed with the gear.

[0008] Preferably, the lifting rod is provided with a cleaning component, and the cleaning component includes a slot opened on the lifting rod, a stabilizing rod is fixedly connected inside the slot, a spring is sleeved outside the stabilizing rod, a movable rod is slidably connected inside the slot, two ends of the spring are respectively fixedly connected to the movable rod and the slot wall of the slot, a connecting frame is fixedly connected between the end of the movable rod away from the lifting rod, and both end heads of the connecting frame are fixedly connected with a resistance rod, the resistance rod is fitted with the sliding rod, and a cleaning plate is fixedly connected between the top ends of the resistance rods.

[0009] Preferably, the movable rod is formed into an inverted L-shape by a horizontal rod and a vertical rod, the vertical rod portion of the movable rod is configured as a multi-section telescopic rod, a hole is provided in the horizontal rod portion at one end of the movable rod near the slot, and the movable rod slides on the outer surface of the stabilizing rod through the hole.

[0010] Preferably, the lower surface of the connecting frame is in contact with the upper surface of the fixed platform, the connecting frame is arranged in a C shape, and a surface of the cleaning plate close to the abutment rod overlaps with the scraper in the vertical direction.

[0011] A method for using a hot melt connection device for producing plastic packaging bags: Step 1: The conveying device intermittently and quantitatively transports the packaging bag downward from the feed port, and the feeding component also transports the material to be packaged into the packaging bag; Step 2: When the hot melter drives the hot melt block to heat-melt the bottom of the packaging bag, the quantitative plate will be opened. When the hot melt block no longer heat-melts the packaging bag, the quantitative plate will close to block the material transported into the packaging bag; Step 3: When the hot melt block is hot-melting the packaging bag, the scraper will drop to the bottom of the hot melter. When the hot melt block is not hot-melting the packaging bag, the scraper will scrape off the plastic particles remaining on the surface of the hot melt block; Step 4: After the scraper scrapes off the hot melt, the cleaning plate will remove the plastic particles adhering to the scraper surface when the scraper moves downward, and cover and protect the hot melt.

[0012] As described above, the beneficial effects of the hot-melt connection device for producing plastic packaging bags and the use method of the present invention are as follows: the scraper can scrape off the plastic particles remaining on the surface of the hot-melt block due to the hot-melt packaging bag, thereby preventing the residual plastic particles from affecting the flatness and temperature uniformity of the hot-melt block. After scraping off the residual plastic particles, the hot-melt block can be better in contact with the packaging bag, ensuring that the packaging bag can be hot-melt connected more firmly, avoiding the quality problem of leakage points in the packaging bag, and improving the qualified rate of the hot-melt connection of the packaging bag; The sealed packaging bags adhering to the hot melt block can also be scraped off by the scraper to avoid the packaging bags adhering to the hot melt block and causing production stagnation, thereby preventing the operating efficiency of the packaging bag processing production line from being affected. In addition, the scraping method does not require manual shutdown of the hot melt device to clean the hot melt block. Each hot melt can achieve the purpose of cleaning the hot melt block, keeping the surface of the hot melt block clean, and avoiding residual plastic particles from affecting the sealing of the hot melt connection of the next packaging bag; The quantitative plate is driven to move to both sides by the second rack, and the quantitative plate no longer clamps the packaging bag, that is, the bottom of the packaging bag has been hot-melt connected, and the material can be put in after the hot-melt is completed, thereby preventing the material from being embedded in the hot-melt position of the packaging bag, thereby preventing the material from destroying the seal of the connection of the packaging bag, ensuring the sealing of the packaging bag, and ensuring the tightness of the hot-melt position after packaging the material, effectively preventing air, moisture, etc. from entering the interior of the packaging bag, thereby better protecting the material in the packaging bag and extending the storage time of the material; The cleaning plate can remove plastic particles adhering to the scraper surface after scraping, so as to avoid excessive accumulation of plastic particles on the scraper and affect its scraping effect. It can ensure that the scraper always maintains a good working condition, improve its service life and reliability, maintain the uniformity of the scraper's scraping force on the hot melt, and reduce the uneven scraping caused by the accumulation of plastic particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a three-dimensional schematic diagram of the aluminum buckle frame, top plate, fixing frame and other components of the present invention; Figure 3 It is a three-dimensional schematic diagram of the fixed platform, electric guide rail slider and rack components of the present invention; Figure 4 It is a three-dimensional schematic diagram of the scraper, the heat fuser and the heat melting block of the present invention; Figure 5 It is a sectional stereoscopic schematic diagram of the overall structure of the present invention; Figure 6 It is a three-dimensional schematic diagram of the scraper, the second sliding rod and the movable rod of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the structure enlargement in the middle; Figure 8 It is a three-dimensional schematic diagram of the components such as the movable rod, the connecting frame, the abutment rod and the cleaning plate of the present invention; Fig. 9 For the present invention Figure 8 A magnified schematic diagram of the structure at B in the middle; Fig.10 It is a three-dimensional schematic diagram of the components such as the inclined groove and the sliding rod of the present invention; Fig.11 For the present invention Fig.10 A magnified schematic diagram of the structure at C in the middle; Fig.12 It is a schematic diagram of the motion plane of the inclined groove, the guide groove and the slide bar of the present invention.

[0014] Among them, the accompanying drawings in the present invention are: 1. Aluminum buckle frame; 11. Top plate; 12. Side plate; 13. Door plate; 14. Fixed platform; 2. Feeding port; 21. Fixing frame; 22. Guide rail plate; 23. Electric guide rail slider; 24. Heat fuser; 25. Heat melting block; 26. Cutting knife; Quantitative assembly: 31, rack 1; 32, fixed rod; 33, gear; 34, guide rod; 35, sliding frame; 36, rack 2; 37, quantitative plate; Scraping assembly: 41, fixed plate 1; 42, inclined slot; 43, fixed plate 2; 44, lifting slot; 45, guide slot; 46, lifting rod; 47, movable slot; 48, slide slot; 49, sliding block; 410, slide bar 1; 411, slide bar 2; 412, scraper; Cleaning components: 51, notch; 52, stabilizing rod; 53, spring; 54, movable rod; 55, connecting frame; 56, resistance rod; 57, cleaning plate. DETAILED DESCRIPTION

[0015] 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.

[0016] The embodiments provided by the present invention will be described in detail below: Embodiment 1: Figures 1 to 4 As shown, a hot-melt connection device for producing plastic packaging bags includes an aluminum buckle frame 1. It should be noted that Figure 1 In the figure, a is the front, b is the back, c is the left, and d is the right. A top plate 11 is fixedly connected to the top of the aluminum buckle frame 1, and side plates 12 are fixedly connected to the front and rear sides of the aluminum buckle frame 1. Door panels 13 are hinged on the left and right sides of the aluminum buckle frame 1. A fixed platform 14 is fixedly connected to the middle of the aluminum buckle frame 1. A feed opening is provided in the middle of the bottom of the fixed platform 14. A feed opening 2 is provided on the top of the top plate 11. A conveying device and a feeding device are provided above the feed opening 2. The conveying device is used to convey the packaging bag to the inside of the feed opening 2, and the feeding device is used to feed the material to be packaged into the packaging bag. The conveying device and the feeding device respectively convey the packaging bag and the material intermittently. The delivery, conveying device and feeding device are existing structures and are not described in detail here. Two fixing frames 21 are fixedly connected to the upper surface of the fixed platform 14, two guide rail plates 22 are fixedly connected between the two fixing frames 21, four electric guide rail sliders 23 are arranged on the two guide rail plates 22, two hot melters 24 are fixedly connected between the electric guide rail sliders 23 on the same side of the two guide rail plates 22, a hot melt block 25 is fixedly connected to the side of the two hot melters 24 close to each other, a cutting knife 26 is fixedly connected to the side of the two hot melters 24 close to each other and located above the hot melt block 25, and a quantitative component for quantitative packaging bag internal material is arranged on the fixing frame 21; The quantitative component includes a rack 1 31 fixedly connected to the upper surface of each electric guide rail slider 23 at the top, four fixed rods 32 corresponding to the position of the rack 1 31 are fixedly connected to the side of the fixed frame 21 close to each other, and each fixed rod 32 is rotatably connected to the end away from the fixed frame 21. The gear 33 is meshed with the top of the rack 1 31, and two guide rods 34 are fixedly connected between the fixed frames 21. A sliding frame 35 corresponding to the position of each rack 1 31 is slidably connected on the outer surface of the two guide rods 34, and a rack 2 36 is fixedly connected to the bottom of the sliding frame 35. The bottom of the rack 2 36 is meshed with the gear 33, and a quantitative plate 37 is fixedly connected between the two racks 2 36 on the same side. The lower surface of the quantitative plate 37 is in contact with the upper surface of the heat melter 24, so as to block the material above the hot melt position of the packaging bag when the packaging bag is hot-melt connected.

[0017] like Figure 3 , Figures 4 to 12 As shown, a scraping assembly for removing hot-melt residues of packaging bags on the hot-melt block 25 is provided on the fixed frame 21, and the scraping assembly includes a fixed plate 1 41 fixedly connected between the two fixed frames 21, the two fixed plates 1 41 are located at the bottom of the guide rail plate 22, and two inclined grooves 42 are provided on the two fixed plates 1 41, and each electric guide rail slider 23 located at the bottom is fixedly connected to a fixed plate 2 43, and a lifting groove 44 is provided on the fixed plate 2 43, and a guide groove 45 corresponding to the position of the inclined groove 42 is provided on the fixed plate 2 43, and a lifting rod 46 is slidably connected in the lifting groove 44, and a movable groove 47 is horizontally provided at one end of the lifting rod 46 away from the lifting groove 44, and a sliding groove 48 is vertically provided at one end of the lifting rod 46 away from the lifting groove 44 The interior of the slide groove 48 is slidably connected with a sliding block 49, and one end of the sliding block 49 close to the inclined groove 42 is fixedly connected with a sliding rod 410, which passes through the movable groove 47 and the guide groove 45 and extends to the interior of the inclined groove 42. The sliding rod 410 slides in the guide groove 45, the inclined groove 42 and the movable groove 47 respectively. The guide groove 45 is composed of a vertical groove and a bending groove, which is used to move the sliding rod 410 to the bottom of the hot melt 24 when the sliding rod 410 slides downward. The side of the sliding block 49 away from the sliding rod 410 is fixedly connected with a sliding rod 411, and the sliding rod 411 slides in the movable groove 47. The side of the sliding rod 411 that is in contact with each other is fixedly connected with a scraper 412, and the top of the scraper 412 is in contact with the hot melt block 25.

[0018] like Figures 7 to 11As shown, the lifting rod 46 is provided with a cleaning component for cleaning the residual material on the surface of the scraper 412, and the cleaning component includes a notch 51 opened on the lifting rod 46, a stabilizing rod 52 is fixedly connected inside the notch 51, a spring 53 is sleeved outside the stabilizing rod 52, and a movable rod 54 is slidably connected inside the notch 51. The movable rod 54 is composed of a horizontal rod and a vertical rod to form an inverted L shape, and the vertical rod part of the movable rod 54 is set as a multi-section telescopic rod. The two ends of the spring 53 are fixedly connected to the movable rod 54 and the groove wall of the notch 51 respectively. The movable rod 54 is close to the notch 51. A hole is opened in the end cross bar part, and the movable rod 54 slides on the outer surface of the stabilizing rod 52 through the hole. A connecting frame 55 is fixedly connected between the end of the movable rod 54 away from the lifting rod 46. The lower surface of the connecting frame 55 is in contact with the upper surface of the fixed platform 14. The connecting frame 55 is set in a C shape. The two ends of the connecting frame 55 are fixedly connected with a resistance rod 56, which is in contact with the sliding rod 411. A clearing plate 57 is fixedly connected between the top ends of the resistance rod 56. The side of the clearing plate 57 close to the resistance rod 56 overlaps with the scraper 412 in the vertical direction.

[0019] In combination with the above preferred embodiments, the following is the entire working process and working principle of the above embodiments: The initial state is: the two heat fuses 24 are in a state of being away from each other, the guide rod 34 is in a converged state, the slide bar 410 is in the highest position in the inclined groove 42 and the vertical groove of the guide groove 45, the slide bar 410 is located at the end of the movable groove 47 away from the movable rod 54, the slide bar 410 makes the sliding block 49 be located in the end of the slide groove 48 away from the movable rod 54, the sliding block 49 makes the slide bar 2 411 be located at the end of the quantitative plate 37 away from the movable rod 54, the slide bar 2 411 makes the scraper 412 be in the highest position, the top of the scraper 412 is in contact with the hot melt block 25, so as to shield and protect the hot melt block 25, and can protect the hot melt block 25 when it is not used for a long time to prevent dust from adhering to the hot melt block 25, the slide bar 2 411 is in contact with the resistance rod 56, and the resistance rod 56 will cause the movable rod 54 to compress the spring 53 through the connecting frame 55, and the movable rod 54 is not contracted at this time.

[0020] Working status: During operation, the packaging bag is intermittently put into the space between the two hot melters 24 from the feed port 2 through the conveying device, and the packaging bag will pass through the two hot melt blocks 25 after being continuously conveyed downward, and the hot melters 24 will be driven to open and close continuously by the electric guide rail slider 23. In the process of the hot melters 24 approaching each other, the packaging bag will be hot-melted and connected by the hot melt blocks 25. The packaging bag will continue to be conveyed downward by the conveying device, and the feeding device will intermittently put the material to be packaged into the packaging bag. At this time, the material is located under the two hot melt blocks 25, and the packaging bag is sealed again by the hot melt blocks 25. In this process, the hot-melt packaging bag and the packaging bag conveyed from the top will be cut off by the cutting knife 26.

[0021] The hot melt block 25 performs hot-melt connection on the packaging bag: in the above, during the downward conveying process of the packaging bag, when the packaging bag moves to the top of the quantitative plate 37, the external controller starts the electric guide rail slider 23, and the electric guide rail slider 23 drives the hot melt block 25 to move toward the middle. The electric guide rail slider 23 also drives the rack 1 31 to move toward the middle, and the rack 1 31 drives the rack 2 36 to move to both sides through the gear 33, and the rack 2 36 drives the sliding frame 35 to move to both sides on the outer surface of the guide rod 34. At the same time, the rack 2 36 will drive the quantitative plate 37 to move to both sides, thereby facilitating the continued hanging of the packaging bag. The hot melt block 25 is heated by the hot melter 24, and the hot melt block 25 can perform hot-melt connection on the hanging packaging bag. When the hot melt block 25 approaches the middle, the quantitative plate 37 will move synchronously to both sides through the above-mentioned structural movement. In this process, the conveying device will convey the packaging bag between the hot melt blocks 25, which can be effectively hot-melt connected by the hot melt blocks 25.

[0022] The quantitative component blocks the material: in the above, after the hot melt block 25 hot-melts the bottom of the packaging bag, the electric guide rail slider 23 will drive the hot melter 24 to move to both sides, and the electric guide rail slider 23 drives the gear 33 to rotate through the rack 1 31, and the gear 33 drives the sliding frame 35 to slide toward the middle on the outer surface of the guide rod 34 through the rack 2 36. At this time, the rack 2 36 will also drive the quantitative plate 37 to move toward the middle. When the two quantitative plates 37 move toward the middle, the quantitative plate 37 clamps the part of the packaging bag above the hot melt position of the hot melt block 25, blocking the material put into the packaging bag by the feeding component. When the hot melt block 25 hot-melts the packaging bag again, that is, at this time, the conveying component will transport the packaging bag downward for a distance. In the process of transporting the packaging bag, the electric guide rail slider 23 will drive the two When the heat melter 24 moves to both sides, the electric guide rail slider 23 will also drive the gear 33 to rotate through the rack 1 31, and the gear 33 will drive the rack 2 36 to move toward the middle. The rack 2 36 slides on the guide rod 34 through the sliding frame 35 and moves stably to both sides. The quantitative plate 37 will be driven to move to both sides through the rack 2 36. The quantitative plate 37 no longer clamps the packaging bag, that is, the bottom of the packaging bag has been hot-melt connected, and the material can be put in after the hot-melt is completed, thereby avoiding the material from being embedded in the hot-melt position of the packaging bag, thereby avoiding the material from destroying the seal of the connection of the packaging bag, ensuring the sealing of the packaging bag, and ensuring the tightness of the hot-melt after packaging the material. It can effectively prevent air, moisture, etc. from entering the interior of the packaging bag, thereby better protecting the material in the packaging bag and extending the storage time of the material.

[0023] The scraping assembly cleans the surface of the hot melt block 25: During the hot melt block 25 hot-melts the packaging bag, the electric guide rail slider 23 drives the hot melter 24 to move toward the middle, and also drives the fixed plate 23 to move toward the middle synchronously. The fixed plate 23 drives the lifting rod 46 to move toward the middle synchronously. In the process of the lifting rod 46 moving downward, the movable rod 54 is driven to move downward synchronously. Because the connecting frame 55 is in a state of conflict with the fixed platform 14, the multi-section telescopic rods on the movable rod 54 gradually shrink, and the connecting frame 55 will not drive the cleaning plate 57 to move downward through the conflicting rod 56, so that the cleaning plate 57 remains stationary. In addition, the fixed plate 23 drives the slide bar 1 410 to move obliquely downward inside the inclined groove 42 through the guide groove 45. Under the guiding action of the inclined groove 42, the slide bar 1 410 drives the lifting rod 46 to move downward inside the lifting groove 44 through the movable groove 47. The slide bar 1 410 will also move downward in the guide groove 4 47, and the second sliding plate 411 will drive the scraper 412 to move downward synchronously. When the sliding bar 1 410 moves to the bottom of the inclined groove 42, it cannot move. Because the fixed plates 43 on both sides are still moving close to each other, the inclined groove 42 and the guide groove 45 will cause the sliding bar 1 410 to drive the sliding block 49 to slide inside the sliding groove 48 to the side close to the movable rod 54, and the sliding block 49 will drive the sliding bar 2 411 to slide in the movable groove 47 synchronously. Therefore, when the sliding bar 1 410 moves to the lowest position of the inclined groove 42, the scraper 412 will move downward but will not continue to move synchronously to the middle with the fixed plate 2 43. Fig.12 At this time, the sliding block 49 will move to the side of the slide groove 48 close to the movable rod 54, and at the same time, the sliding block 49 will drive the second slide bar 411 to move to the side of the movable groove 47 closest to the movable rod 54. Because the electric guide rail slider 23 drives the hot melter 24 to move toward the middle, the above-mentioned middle scraper 412 no longer moves synchronously toward the middle with the fixed plate 23, and then the scraper 412 will be placed under the hot melter 24 after moving downward, so that there is space between the two scrapers 412, and because the scraper 412 will be flush with the material in the packaging bag after moving downward, the scraper 412 will not affect the material in the packaging bag when the hot melting block 25 heats the packaging bag.

[0024] When the hot melt block 25 has completed hot melting of the packaging bag, the electric guide rail slider 23 drives the hot melter 24 to move to both sides, and the hot melter 24 drives the hot melt block 25 to move to both sides synchronously. The electric guide rail slider 23 will also drive the fixed plate 23 to move to both sides synchronously. During the movement, the fixed plate 23 will drive the lifting rod 46 to move to both sides synchronously through the lifting groove 44. The fixed plate 23 will also drive the sliding rod 1 410 to move obliquely upward inside the inclined groove 42 through the guide groove 45. During this process, the sliding rod 1 410 will also move obliquely upward in the bending groove of the guide groove 45. The sliding rod 1 410 drives the sliding block 49 to move inside the sliding groove 48 to the side away from the movable rod 54. The sliding block 49 will drive the sliding rod 2 411 to move inside the movable groove 47 to the side away from the movable rod 54. The sliding rod 2 411 drives the scraper 412 to move synchronously, so that the scraper 412 moves to the bottom of the side of the hot melt block 25 away from the hot melt 24. The sliding rod 1 410 continues to move in the guide groove 42. Under the action of the pulley 45, the slide bar 410 moves from the bending groove to the vertical groove part inside the guide groove 45, and then the slide bar 410 moves upward in the vertical groove part of the guide groove 45. The slide bar 410 drives the lifting rod 46 to move upward synchronously inside the lifting groove 44 through the movable groove 47. The lifting rod 46 drives the slide bar 411 to move upward synchronously through the movable groove 47. The slide bar 411 drives the scraper 412 to move upward. After the scraper 412 moves upward, it will contact the side surface of the hot melt block 25 away from the hot melt device 24. The scraper 412 can scrape off the plastic particles remaining on the surface of the hot melt block 25 due to the hot melt packaging bag, thereby preventing the residual plastic particles from affecting the flatness and temperature uniformity of the hot melt block 25. After scraping off the residual plastic particles, it can ensure that the hot melt block 25 can better contact with the packaging bag, ensure that the packaging bag can be hot-melt connected more firmly, avoid the quality problem of leakage points in the packaging bag, and improve the qualified rate of hot-melt connection of the packaging bag.

[0025] In addition, if a packaging bag is stuck to the hot melt block 25 due to the hot melt block 25 being too hot or too cold, the scraper 412 will also scrape off the sealed packaging bag stuck to the hot melt block 25 during the process of scraping off the residual plastic particles on the surface of the hot melt block 25, so as to avoid the packaging bag sticking to the hot melt block 25 and causing production stagnation, thereby preventing the operating efficiency of the packaging bag processing production line from being affected. In addition, by scraping, there is no need to manually stop the hot melt device to clean the hot melt block 25. Each hot melt can achieve the purpose of cleaning the hot melt block 25, keep the surface of the hot melt block 25 clean, and avoid residual plastic particles from affecting the sealing of the hot melt connection of the next packaging bag.

[0026] The cleaning component cleans the plastic particles scraped by the scraper 412: in the process of the scraper 412 scraping the residual plastic particles of the hot melt block 25, when the scraper 412 moves downward, the second slide bar 411 will move closer to the movable rod 54 inside the movable groove 47, and under the elastic reset action of the spring 53, the movable rod 54 moves inside the notch 51 to the side away from the slide groove 48, and the movable rod 54 will drive the connecting frame 55 to move synchronously. At this time, the connecting frame 55 will drive the resistance rod 56 to move synchronously, so that the resistance rod 56 can always resist the second slide bar 411, so as to keep the cleaning plate 57 vertically overlapping with the side of the scraper 412 away from the hot melt block 25. Therefore, during the downward movement of the scraper 412, the scraper 412 will always be in contact with the cleaning plate 57, and the vertical position of the cleaning plate 57 remains unchanged. Therefore, during the downward movement of the scraper 412, the cleaning plate 57 will scrape off the plastic particles on its surface. The cleaning plate 57 will remove the plastic particles adhering to the surface of the scraper 412 after scraping by the scraper 412, thereby avoiding the accumulation of excessive plastic particles on the scraper 412 and affecting its scraping effect. It can ensure that the scraper 412 always maintains a good working condition, improves its service life and reliability, maintains the uniformity of the scraping force of the scraper 412 on the hot melt block 25, and reduces the uneven scraping caused by the accumulation of plastic particles.

[0027] Embodiment 2: A method for using a hot melt connection device for producing plastic packaging bags: Step 1: The conveying device intermittently and quantitatively transports the packaging bag downward from the feed port 2, and the feeding component also transports the material to be packaged into the packaging bag; Step 2: When the hot melt device 24 drives the hot melt block 25 to perform hot melt connection on the bottom of the packaging bag, the quantitative plate 37 will be opened. When the hot melt block 25 no longer performs hot melt connection on the packaging bag, the quantitative plate 37 will be closed to block the material being transported into the packaging bag. Step 3: When the hot melt block 25 is hot-melting the packaging bag, the scraper 412 will drop to the bottom of the hot melter 24. When the hot melt block 25 is not hot-melting the packaging bag, the scraper 412 will scrape off the plastic particles remaining on the surface of the hot melt block 25; Step 4; after the scraper 412 scrapes off the hot melt block 25, the scraper 412 moves downward, and the cleaning plate 57 will remove the plastic particles adhering to the surface of the scraper 412 and cover the hot melt block 25 for protection.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hot-melt connection device for producing plastic packaging bags, comprising an aluminum buckle frame (1), a top plate (11) is fixedly connected to the top of the aluminum buckle frame (1), side plates (12) are fixedly connected to the front and rear sides of the aluminum buckle frame (1), door plates (13) are hinged to the left and right sides of the aluminum buckle frame (1), a fixed platform (14) is fixedly connected to the middle of the aluminum buckle frame (1), a feed port (2) is opened on the top of the top plate (11), and a conveying device and a feeding device are arranged above the feed port (2), characterized in that: Two fixing frames (21) are fixedly connected to the upper surface of the fixing platform (14); two guide rail plates (22) are fixedly connected between the two fixing frames (21); four electric guide rail sliders (23) are arranged on the two guide rail plates (22); two hot melters (24) are fixedly connected between the electric guide rail sliders (23) on the same side of the two guide rail plates (22); a hot melt block (25) is fixedly connected to the sides of the two hot melters (24) close to each other; a cutting knife (26) is fixedly connected to the sides of the two hot melters (24) close to each other; and a scraping component is arranged on the fixing frame (21); The scraping assembly comprises a fixing plate 1 (41) fixedly connected between two fixing frames (21), the two fixing plates 1 (41) being located at the bottom of the guide rail plate (22), the two fixing plates 1 (41) being provided with two inclined grooves (42), each electric guide rail slider (23) located at the bottom being fixedly connected with a fixing plate 2 (43), the fixing plate 2 (43) being provided with a lifting groove (44), the fixing plate 2 (43) being provided with a guide groove (45), the lifting groove (44) being slidably connected with a lifting rod (46), A movable groove (47) is formed at one end of the lifting rod (46) away from the lifting groove (44), a sliding groove (48) is formed at one end of the lifting rod (46) away from the lifting groove (44), a sliding block (49) is slidably connected inside the sliding groove (48), an end of the sliding block (49) close to the inclined groove (42) is fixedly connected to a first sliding rod (410), a side of the sliding block (49) away from the first sliding rod (410) is fixedly connected to a second sliding rod (411), and a side of the second sliding rod (411) abutting against each other is fixedly connected to a scraper (412).

2. The hot melt connection device for producing plastic packaging bags according to claim 1, characterized in that: The slide bar 1 (410) passes through the movable groove (47) and the guide groove (45) and extends to the inside of the inclined groove (42). The slide bar 1 (410) slides inside the guide groove (45), the inclined groove (42) and the movable groove (47) respectively. The guide groove (45) is composed of a vertical groove and a bending groove. The slide bar 2 (411) slides inside the movable groove (47). The top of the scraper (412) is in contact with the hot melt block (25).

3. The hot melt connection device for producing plastic packaging bags according to claim 1, characterized in that: The fixed frame (21) is provided with a quantitative component, the quantitative component comprising a rack (31) fixedly connected to the upper surface of the electric guide rail slider (23) at the top, four fixed rods (32) fixedly connected to the side of the fixed frame (21) close to each other, each of the fixed rods (32) is rotatably connected to a gear (33), two guide rods (34) are fixedly connected between the fixed frames (21), a sliding frame (35) is slidably connected to the outer surface of the two guide rods (34), the bottom of the sliding frame (35) is fixedly connected to a rack (36), a quantitative plate (37) is fixedly connected between the two racks (36) on the same side, and the lower surface of the quantitative plate (37) is in contact with the upper surface of the hot melter (24).

4. The hot melt connection device for producing plastic packaging bags according to claim 3, characterized in that: The gear (33) is meshed with the top of the rack 1 (31), and the bottom of the rack 2 (36) is meshed with the gear (33).

5. The hot melt connection device for producing plastic packaging bags according to claim 3, characterized in that: The lifting rod (46) is provided with a cleaning component, which includes a notch (51) opened on the lifting rod (46), a stabilizing rod (52) fixedly connected inside the notch (51), a spring (53) sleeved outside the stabilizing rod (52), a movable rod (54) slidably connected inside the notch (51), two ends of the spring (53) respectively fixedly connected to the movable rod (54) and the groove wall of the notch (51), a connecting frame (55) fixedly connected between one end of the movable rod (54) away from the lifting rod (46), both ends of the connecting frame (55) fixedly connected to a resisting rod (56), the resisting rod (56) being in contact with the second sliding rod (411), and a cleaning plate (57) fixedly connected between the top ends of the resisting rod (56).

6. The hot melt connection device for producing plastic packaging bags according to claim 5, characterized in that: The movable rod (54) is formed into an inverted L-shape by a horizontal rod and a vertical rod. The vertical rod portion of the movable rod (54) is configured as a multi-section telescopic rod. A hole is provided in the horizontal rod portion at one end of the movable rod (54) close to the notch (51). The movable rod (54) slides on the outer surface of the stabilizing rod (52) through the hole.

7. The hot melt connection device for producing plastic packaging bags according to claim 5, characterized in that: The lower surface of the connecting frame (55) is in contact with the upper surface of the fixed platform (14); the connecting frame (55) is arranged in a C shape; and a surface of the cleaning plate (57) close to the abutment rod (56) overlaps with the scraper (412) in the vertical direction.

8. A method for using a hot melt connection device for producing plastic packaging bags, characterized in that: The hot melt connection device for producing plastic packaging bags as described in claim 7 is used, and the method of use comprises the following steps: Step 1: The conveying device intermittently and quantitatively conveys the packaging bag downward from the feed inlet (2), and the feeding component conveys the material to be packaged into the packaging bag; Step 2: When the hot melt device (24) drives the hot melt block (25) to perform hot melt connection on the bottom of the packaging bag, the quantitative plate (37) will be opened. When the hot melt block (25) no longer performs hot melt connection on the packaging bag, the quantitative plate (37) will be closed to block the material being transported into the packaging bag. Step 3: When the hot melt block (25) is hot-melting the packaging bag, the scraper (412) will descend below the hot melter (24). When the hot melt block (25) is not hot-melting the packaging bag, the scraper (412) will scrape away the plastic particles remaining on the surface of the hot melt block (25); Step 4: After the scraper (412) scrapes off the hot melt block (25), when the scraper (412) moves downward, the cleaning plate (57) removes the plastic particles adhering to the surface of the scraper (412) and covers and protects the hot melt block (25).

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