PETG (Polyethylene Terephthalate Glycol) hot melt adhesive label film preparation equipment and method

Abstract

The invention relates to the related technical field of PETG label films, in particular to PETG hot melt adhesive label film preparation equipment and method.The PETG hot melt adhesive label film preparation equipment comprises a base, an extrusion mechanism is arranged on the upper surface of the base, a melt pump is arranged on the surface of one side of the extrusion mechanism, and a feeding mechanism is arranged on the upper surface of the extrusion mechanism. According to the equipment and the method for preparing the PETG hot melt adhesive label film, raw materials are uniformly crushed through multiple groups of crushing shafts, multiple groups of heating pipes are uniformly heated from the upper direction and the lower direction, sufficient and uniform plasticizing of the materials is ensured, the defective rate is reduced, stirring blades are distributed at equal intervals, uniform stirring is realized, sufficient fusion of an additive and PETG resin is ensured, and the product quality is guaranteed from the source; the connecting shafts synchronously rotate through the chains, stable and consistent power transmission is guaranteed, the multiple sets of limiting grooves are matched with the limiting columns, the upper panel is accurately positioned, the extrusion mechanism is stable in structure, the sealing grooves are tightly matched with the sealing columns, leakage is prevented, the internal stable environment is maintained, and stable operation of equipment is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field related to PETG label films, and in particular to a PETG hot melt adhesive label film preparation device and method. Background Art

[0002] PETG is a transparent plastic in brief, and is a non-crystalline copolyester. The commonly used comonomer of PETG is 1,4-cyclohexanedimethanol (CHDM), and its full name is polyethylene terephthalate-1,4-cyclohexanedimethanol. It is a condensation product of three monomers: terephthalic acid (PTA), ethylene glycol (EG), and 1,4-cyclohexanedimethanol (CHDM). Compared with PET, it has more 1,4-cyclohexanedimethanol comonomer, and compared with PCT, it has more ethylene glycol comonomer. Therefore, the performance of PETG is very different from that of PET and PCT, and it has its own uniqueness. Only Eastman in the United States and SK in South Korea have relatively mature technologies in the world. The main domestic agents of Eastman PETG and South Korea SKPETG and other products include Shanghai Lianmo Chemical Co., Ltd., etc. With the increase of CHDM in the copolymer, the melting point decreases, the glass transition temperature increases, and the crystallization The degree decreases and finally forms an amorphous polymer. Generally, the CHDM content in PETG is more suitable at 30% to 40%. It has good viscosity, transparency, color, chemical resistance, and stress whitening resistance. It can be quickly thermoformed or extruded and blow molded. The viscosity is better than that of acrylic acid. PETG products are highly transparent and have good toughness. They are suitable for molding thick-walled transparent products. PETG has excellent processing and molding performance and can be designed in any shape according to the designer's intention. It can adopt traditional extrusion, injection molding, blow molding and suction molding methods. It can be widely used in the market of plates, sheets, high-performance shrink films, bottles and profiles. At the same time, it has excellent secondary processing performance and can also be modified by conventional machining. In the preparation process of PETG hot melt adhesive label film, extrusion molding is the key link. Therefore, a PETG hot melt adhesive label film preparation device and method are particularly needed.

[0003] However, in the existing PETG hot melt adhesive label film preparation equipment, the common extrusion mechanism has a poor plasticizing effect during the extrusion process, and the material is prone to uneven plasticization, resulting in unmelted particles in the extruded material, which in turn causes inconsistent thickness and uneven surface of the label film, seriously reducing product quality and increasing the defective rate.

[0004] Invention content

[0005] The purpose of the present invention is to provide a PETG hot melt adhesive label film preparation device and method to solve the above problems and overcome the defects of the prior art, as described in detail below.

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

[0007] The present invention provides a PETG hot melt adhesive label film preparation device, comprising a base, an extrusion mechanism is arranged on the upper surface of the base, a melt pump is arranged on one side surface of the extrusion mechanism, a cylinder is fixedly connected to one side surface of the melt pump, and a feeding mechanism is arranged on the upper surface of the extrusion mechanism;

[0008] The extrusion mechanism includes a transmission box, a connecting shaft, a chain, a chain box, a first driving motor, a crushing shaft, a driving shaft, a lower panel, a sealing groove, a limiting groove, a feed plate, a fixing ring, a transmission shaft, a servo motor, a rotating ring, an upper panel, a sealing column, a limiting column and a heating tube. The upper surface of the base is fixedly connected to the transmission box, the inner surface of the transmission box is rotatably connected to the connecting shaft, the outer surface of the connecting shaft is meshed with a chain, the outer surface of the connecting shaft is rotatably connected to the chain box, one end of the connecting shaft is fixedly connected to the first driving motor, the other end of the connecting shaft is fixedly connected to the crushing shaft, one side surface of the crushing shaft is fixedly connected to the driving shaft, and one side surface of the driving shaft is rotatably connected to the A lower panel is connected, a sealing groove is provided on the upper surface of the lower panel, a limiting groove is provided on the inner surface of the sealing groove, a feed plate is fixedly connected to the upper surface of the lower panel, a fixing ring is fixedly connected to one side surface of the lower panel, a transmission shaft is rotatably connected to the inner surface of the fixing ring, a servo motor is fixedly connected to one end of the transmission shaft, a rotating ring is fixedly connected to the outer surface of the transmission shaft, an upper panel is fixedly connected to one side surface of the rotating ring, a sealing column is fixedly connected to one side surface of the upper panel, a limiting column is fixedly connected to the inner surface of the upper panel, a heating tube is fixedly connected to the inner surface of the upper panel, and a melt pump is fixedly connected to one side surface of the lower panel.

[0009] Preferably, the connecting shafts are symmetrically arranged with respect to the central axis of the transmission box, and the two groups of connecting shafts are connected by a chain.

[0010] Preferably, the crushing shafts are arranged in multiple groups on the surface of the lower panel, and the driving shafts are arranged in multiple groups on the surface of the lower panel.

[0011] Preferably, the inner dimension of the sealing groove matches the outer dimension of the sealing column, and the inner dimension of the limiting groove matches the outer dimension of the limiting column.

[0012] Preferably, the limiting grooves are provided in multiple groups on the surface of the lower panel, and the fixing rings are provided in multiple groups on the surface of the transmission shaft.

[0013] Preferably, the rotating rings are arranged in multiple groups on the surface of the transmission shaft, the heating tubes are arranged in multiple groups on the inner side of the upper panel, and the heating tubes are also arranged on the inner side of the lower panel.

[0014] Preferably, the feeding mechanism comprises a loading box, a weight sensor, a unloading port, a screw conveyor shaft, a conveying column, a second driving motor, a transmission belt, a stirring shaft, a belt box, a stirring paddle, a stirring box, an electromagnetic valve, a barrel and a dividing plate, the upper surface of the transmission box is fixedly connected to the loading box, the lower surface of the loading box is fixedly connected to the weight sensor, the lower surface of the loading box is provided with a unloading port, the inner surface of the loading box is rotatably connected to the screw conveyor shaft, one end of the screw conveyor shaft is fixedly connected to the conveying column, one end of the conveying column is fixedly connected to the second driving motor, the outer surface of the conveying column is attached to the transmission belt, the inner surface of the transmission belt is attached to the stirring shaft, the outer surface of the stirring shaft is rotatably connected to the belt box, the outer surface of the stirring shaft is fixedly connected to the stirring paddle, one side surface of the belt box is fixedly connected to the stirring box, the lower surface of the stirring box is fixedly connected to the electromagnetic valve, the upper surface of the stirring box is fixedly connected to the barrel, and the inner surface of the barrel is fixedly connected to the dividing plate.

[0015] Preferably, the feed port matches the feed plate, and the stirring shaft is connected to the conveying column through a transmission belt.

[0016] Preferably, the stirring blades are arranged in a plurality of groups at equal intervals on the surface of the stirring shaft, and the dividing plates are arranged in a plurality of groups on the inner surface of the barrel.

[0017] A method for using a PETG hot melt adhesive label film preparation device further comprises the following steps:

[0018] Step 1: Add PETG resin and various additives into the barrel respectively, and disperse the raw materials through the dividing plate to ensure that the raw materials can be fully mixed in the subsequent stirring process;

[0019] Step 2: Turn on the second drive motor to drive the conveying column to rotate, and then drive the spiral conveying shaft to rotate. Under the action of the spiral conveying shaft, the raw materials in the loading box are transported to the feeding plate through the discharge port. The weight sensor monitors the weight of the raw materials in the loading box in real time, and accurately controls the discharge amount according to the preset formula ratio. While the conveying column rotates, the stirring shaft is driven to rotate through the transmission belt, and the stirring blade stirs the raw materials in the stirring box to further mix the additives and PETG resin evenly;

[0020] Step 3: Start the first drive motor to drive the connecting shaft to rotate, and make the two sets of connecting shafts rotate synchronously through the chain, thereby driving the crushing shaft and the driving shaft to operate. The raw materials transported by the feeding mechanism enter the lower panel and are initially crushed under the action of the crushing shaft to facilitate subsequent plasticization. Start the servo motor to drive the transmission shaft to rotate, and the rotating circle rotates accordingly, so that the upper panel is opened and closed. When the upper panel is closed, the sealing column is embedded in the sealing groove, and the limit column is embedded in the limit groove to ensure the sealing and stability inside the extrusion mechanism. The heating tubes in the upper and lower panels are turned on to heat and plasticize the raw materials. According to the characteristics of PETG materials and production requirements, the heating temperature and time are accurately controlled. The plasticized materials are pushed by the driving shaft and move toward the direction of the melt pump;

[0021] Step 4: Start the cylinder and adjust the working parameters of the melt pump to ensure that the melt pump stably extracts the plasticized material and delivers it to the subsequent processing link at a constant pressure and flow rate. The material output from the melt pump enters the subsequent processing equipment for molding;

[0022] Step 5: After the equipment is used, turn off the motors, heating tubes, cylinders and other equipment, and clean the feeding mechanism, extrusion mechanism, melt pump and other components to prevent material residues from affecting the next production.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. Multiple groups of crushing shafts are used to evenly crush the raw materials, and multiple groups of heating tubes are used to evenly heat the materials from top to bottom to ensure that the materials are fully and evenly plasticized, reducing the defective rate. The stirring blades are evenly spaced and stirred evenly to ensure that the additives and PETG resin are fully integrated, thus ensuring product quality from the source.

[0025] 2. The connecting shaft rotates synchronously through the chain to ensure stable and consistent power transmission. Multiple sets of limit grooves and limit columns cooperate to accurately position the upper panel, making the extrusion mechanism structure stable. The sealing groove and sealing column cooperate closely to prevent leakage, maintain a stable internal environment, and ensure stable operation of the equipment.

[0026] 3. Multiple sets of drive shafts work together to push materials to ensure stable and continuous transportation and avoid blockage and accumulation. The working rhythm of the feeding mechanism and the extrusion mechanism can be matched and adjusted to make the entire production process efficient and orderly, thereby improving production efficiency;

[0027] 4. The dividing plate initially separates the raw materials and guides them to fall evenly. The stirring blade stirs them evenly to ensure that the materials entering the extrusion mechanism are accurately proportioned and evenly mixed. The weight sensor monitors the weight of the raw materials in the feeding box in real time, and accurately controls the feeding amount according to the preset formula to meet different production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 This is a schematic diagram of the side appearance structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the material loading box and the material feeding plate cooperating with each other in the present invention;

[0031] Figure 3 It is a schematic diagram of the structure of the extrusion mechanism of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the transmission shaft and the rotating circle cooperating with each other in the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the crushing shaft and the driving shaft cooperating with each other in the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the lower panel and the melt pump cooperating with each other in the present invention;

[0035] Figure 7 This is a schematic diagram of the structure of the barrel and the material distribution plate cooperating with each other in the present invention;

[0036] Figure 8 It is a schematic diagram of the feeding mechanism structure of the present invention.

[0037] In the figure: 1, base; 2, extrusion mechanism; 201, transmission box; 202, connecting shaft; 203, chain; 204, chain box; 205, first driving motor; 206, crushing shaft; 207, driving shaft; 208, lower panel; 209, sealing groove; 210, limiting groove; 211, feeding plate; 212, fixing ring; 213, transmission shaft; 214, servo motor; 215, rotating ring; 216, upper panel; 217, sealing column ; 218, limit column; 219, heating tube; 3, melt pump; 4, cylinder; 5, feeding mechanism; 501, loading box; 502, weight sensor; 503, unloading port; 504, spiral conveyor shaft; 505, conveying column; 506, second drive motor; 507, transmission belt; 508, stirring shaft; 509, belt box; 510, stirring paddle; 511, stirring box; 512, solenoid valve; 513, barrel; 514, dividing plate. DETAILED DESCRIPTION

[0038] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. 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 implementation methods obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0039] Example 1

[0040] See also Figure 1-8 The present invention provides a technical solution: a PETG hot melt adhesive label film preparation device, comprising a base 1, an extrusion mechanism 2 is arranged on the upper surface of the base 1, a melt pump 3 is arranged on one side surface of the extrusion mechanism 2, a cylinder 4 is fixedly connected to one side surface of the melt pump 3, and a feeding mechanism 5 is arranged on the upper surface of the extrusion mechanism 2;

[0041] The extrusion mechanism 2 includes a transmission box 201, a connecting shaft 202, a chain 203, a chain box 204, a first driving motor 205, a crushing shaft 206, a driving shaft 207, a lower panel 208, a sealing groove 209, a limiting groove 210, a feed plate 211, a fixing ring 212, a transmission shaft 213, a servo motor 214, a rotating ring 215, an upper panel 216, a sealing column 217, a limiting column 218 and a heating tube 219. The upper surface of the base 1 is fixedly connected with the transmission box 201, the inner surface of the transmission box 201 is rotatably connected with the connecting shaft 202, the outer surface of the connecting shaft 202 is meshed with the chain 203, the outer surface of the connecting shaft 202 is rotatably connected with the chain box 204, and one end of the connecting shaft 202 is fixedly connected with the first driving The motor 205 and the other end of the connecting shaft 202 are fixedly connected to the crushing shaft 206, and the one side surface of the crushing shaft 206 is fixedly connected to the driving shaft 207, and the one side surface of the driving shaft 207 is rotatably connected to the lower panel 208, and the upper surface of the lower panel 208 is provided with a sealing groove 209, and the inner surface of the sealing groove 209 is provided with a limiting groove 210, and the upper surface of the lower panel 208 is fixedly connected to the feeding plate 211, and the one side surface of the lower panel 208 is fixedly connected to the fixing ring 212, and the inner surface of the fixing ring 212 is rotatably connected to the transmission shaft 213, and one end of the transmission shaft 213 is fixedly connected to the servo motor 214, and the outer surface of the transmission shaft 213 is fixedly connected to the rotating ring 215, and the one side surface of the rotating ring 215 is fixedly connected to the upper Panel 216, one side surface of the upper panel 216 is fixedly connected with a sealing column 217, one side surface of the upper panel 216 is fixedly connected with a limiting column 218, the inner side surface of the upper panel 216 is fixedly connected with a heating tube 219, and one side surface of the lower panel 208 is fixedly connected with a melt pump 3. Through the arrangement of the transmission box 201, the connecting shaft 202, the chain 203, the chain box 204, the first driving motor 205, the crushing shaft 206, the driving shaft 207, the lower panel 208, the sealing groove 209, the limiting groove 210, the feeding plate 211, the fixing ring 212, the transmission shaft 213, the servo motor 214, the rotating ring 215, the upper panel 216, the sealing column 217, the limiting column 218 and the heating tube 219, when in use, the first driving motor 205 is started. The motor 205 drives the connecting shaft 202 to rotate. Since the outer surface of the connecting shaft 202 is meshed with a chain 203 and the two groups of connecting shafts 202 are connected by the chain 203, they can realize synchronous rotation. The rotation of the connecting shaft 202 further drives the crushing shaft 206 fixedly connected to the other end thereof to rotate. At this time, the raw materials such as PETG resin and additives entering from the feeding mechanism 5 through the feeding plate 211 are initially crushed under the high-speed rotation of the crushing shaft 206, which is helpful for the subsequent plasticizing process so that the materials can be heated and mixed more evenly. The crushed raw materials are on the lower plate 208 and move to one side as the driving shaft 207 rotates. When the raw materials need to be plasticized, the servo motor 214 is started, which drives the transmission shaft 213 to rotate.Then, the rotating ring 215 fixed on the outer surface of the transmission shaft 213 rotates, and the upper panel 216 fixedly connected to the side surface of the rotating ring 215 moves accordingly. When the upper panel 216 moves downward to fit with the lower panel 208, the sealing column 217 on the side surface of the upper panel 216 is embedded in the sealing groove 209 opened on the upper surface of the lower panel 208, and the limiting column 218 is embedded in the limiting groove 210, which ensures the sealing and stability of the inside of the extrusion mechanism 2 and prevents heat loss and impurities from entering. The upper panel 216 and the lower panel 208 are both fixedly connected with the heating pipe 219. When the upper panel 216 and the lower panel 208 are closed, After forming a closed space, the heating tube 219 starts to work and heats the raw materials therein. At a suitable temperature, the raw materials are gradually plasticized and become a fluid melt. In this process, the driving shaft 207 rotates continuously to push the plasticized materials to move in the direction of the melt pump 3. As the driving shaft 207 rotates continuously, the plasticized materials are continuously pushed to the melt pump 3 fixedly connected to the surface of one side of the lower panel 208. The melt pump 3 can stably extract the materials and transport them to the subsequent processing links at a certain pressure and flow rate, completing the entire extrusion process and plasticizing evenly, improving product quality, and reducing the defective rate.

[0042] Furthermore, the connecting shafts 202 are symmetrically arranged with respect to the central axis of the transmission box 201, and the two groups of connecting shafts 202 are connected by a chain 203. Through the arrangement of the connecting shafts 202 and the chain 203, when in use, the chain 203 is tightly engaged with the outer surface of the connecting shaft 202. When one group of the connecting shafts 202 rotates under the drive of the motor, the chain 203 will move accordingly. Because the two ends of the chain 203 are respectively connected to the two groups of connecting shafts 202, it will drive the other group of connecting shafts 202 to rotate synchronously, thereby ensuring the stability and consistency of the power transmission of the entire extrusion mechanism 2.

[0043] Furthermore, multiple groups of crushing shafts 206 are arranged on the surface of the lower panel 208, and multiple groups of driving shafts 207 are arranged on the surface of the lower panel 208. Through the arrangement of the crushing shafts 206 and the driving shafts 207, when in use, multiple groups of crushing shafts 206 are arranged on the surface of the lower panel 208 with a certain spacing and layout, which will simultaneously crush the PETG resin and additives and other raw materials entering the extrusion mechanism 2, so that the raw materials can be better plasticized and mixed in the subsequent processing process. Multiple groups of driving shafts 207 are distributed on the surface of the lower panel 208, which can more effectively promote the movement of materials in the extrusion mechanism 2. Through the coordinated work of multiple groups of driving shafts 207, the stability and continuity of material transportation can be guaranteed, and the phenomenon of blockage or accumulation of materials during the transportation process can be avoided.

[0044] Furthermore, the inner dimension of the sealing groove 209 is consistent with the outer dimension of the sealing column 217, and the inner dimension of the limiting groove 210 is consistent with the outer dimension of the limiting column 218. Through the setting of the sealing groove 209 and the sealing column 217, when in use, the dimensions of the sealing groove 209 and the sealing column 217 are consistent. When the upper panel 216 is combined with the lower panel 208, the sealing column 217 is inserted into the sealing groove 209 to form a tight fit. The small gap between the two can effectively prevent the material, gas or liquid from leaking from the junction of the upper panel 216 and the lower panel 208, ensuring that the environment inside the extrusion mechanism 2 is relatively closed, preventing the PETG resin from overflowing from the gap during the extrusion process, and avoiding material waste and pollution to the equipment and the working environment.

[0045] Furthermore, multiple groups of limiting grooves 210 are arranged on the surface of the lower panel 208, and multiple groups of fixing rings 212 are arranged on the surface of the transmission shaft 213. Through the arrangement of the limiting grooves 210 and the limiting columns 218, when in use, multiple groups of limiting grooves 210 cooperate with the limiting columns 218 to accurately position and guide the upper panel 216 at multiple positions, ensuring that the upper panel 216 can accurately cooperate with the lower panel 208 during installation and operation, maintain the accuracy of the relative position, and make the structure of the entire extrusion mechanism 2 more stable.

[0046] Furthermore, multiple groups of rotating circles 215 are arranged on the surface of the transmission shaft 213, multiple groups of heating tubes 219 are arranged on the inner side of the upper panel 216, and heating tubes 219 are also arranged on the inner side of the lower panel 208. Through the arrangement of the heating tubes 219, when in use, during the process of extruding the PETG material, the material needs to be evenly heated to achieve a good plasticized state. Multiple groups of heating tubes 219 are respectively arranged on the inner sides of the upper panel 216 and the lower panel 208, which can heat the material in the middle from both the upper and lower directions, increase the uniformity and comprehensiveness of the heating, avoid local overheating or overcooling of the material, ensure that the material can be fully and evenly heated in the entire extrusion area, and improve product quality.

[0047] Furthermore, the feeding mechanism 5 includes a loading box 501, a weight sensor 502, a discharge port 503, a spiral conveying shaft 504, a conveying column 505, a second driving motor 506, a transmission belt 507, a stirring shaft 508, a belt box 509, a stirring paddle 510, a stirring box 511, a solenoid valve 512, a barrel 513 and a dividing plate 514. The upper surface of the transmission box 201 is fixedly connected with the loading box 501, the lower surface of the loading box 501 is fixedly connected with the weight sensor 502, the lower surface of the loading box 501 is provided with a discharge port 503, the inner surface of the loading box 501 is rotatably connected with the spiral conveying shaft 504, one end of the spiral conveying shaft 504 is fixedly connected with the conveying column 505, and the conveying column 505 is A second driving motor 506 is fixedly connected to one end, a transmission belt 507 is attached to the outer surface of the conveying column 505, a stirring shaft 508 is attached to the inner surface of the transmission belt 507, a belt box 509 is rotatably connected to the outer surface of the stirring shaft 508, a stirring paddle 510 is fixedly connected to the outer surface of the stirring shaft 508, a stirring box 511 is fixedly connected to one side surface of the belt box 509, a solenoid valve 512 is fixedly connected to the lower surface of the stirring box 511, a barrel 513 is fixedly connected to the upper surface of the stirring box 511, a dividing plate 514 is fixedly connected to the inner surface of the barrel 513, and a feeding box 501, a weight sensor 502, a feeding port 503, a spiral conveying shaft 504, a conveying column 505, a second driving motor 506 is fixedly connected to the outer surface of the conveying column 505, a stirring shaft 508 is rotatably connected to the outer surface of the stirring shaft 508, a stirring paddle 510 is fixedly connected to the outer surface of the stirring shaft 508, a stirring box 511 is fixedly connected to the one side surface of the belt box 509, a solenoid valve 512 is fixedly connected to the lower surface of the stirring box 511, a barrel 513 is fixedly connected to the upper surface of the stirring box 511, a dividing plate 514 is fixedly connected to the inner surface of the barrel 513, The motor 506, the transmission belt 507, the stirring shaft 508, the belt box 509, the stirring paddle 510, the stirring box 511, the solenoid valve 512, the barrel 513 and the dividing plate 514 are arranged. When in use, the PETG resin and various additives are pre-stored in the barrel 513. The dividing plate 514 initially separates different raw materials to avoid mutual mixing, and at the same time guides the raw materials to fall evenly to ensure the accuracy of subsequent stirring and transportation. The second driving motor 506 is turned on, which drives the conveying column 505 to rotate, and then drives the spiral conveying shaft 504 to rotate. When the conveying column 505 rotates, the transmission belt 507 attached to the outer surface moves accordingly, thereby driving the stirring shaft 508 attached thereto to rotate, and the stirring shaft 508 fixed on the outside of the stirring shaft 508 The mixing paddle 510 mixes the falling raw materials in the stirring box 511 to fully blend the additives with the PETG resin, ensure that the materials are evenly mixed, and lay a good foundation for subsequent extrusion plasticization. Then, the solenoid valve 512 is opened to allow the raw materials to fall into the loading box 501. The raw materials in the loading box 501 are pushed by the spiral conveying shaft 504 and conveyed to the extrusion mechanism 2 through the discharge port 503. The weight sensor 502 monitors the weight of the raw materials in the loading box 501 in real time. According to the preset formula ratio, the discharge amount is accurately adjusted to ensure the accuracy of the formula and avoid affecting the product quality due to the imbalance of the raw material ratio. By controlling the second drive motor 506, the amount of material entering the extrusion mechanism 2 can be adjusted to match the working rhythm of the extrusion mechanism 2.

[0048] Furthermore, the discharge port 503 matches the feed plate 211, and the stirring shaft 508 is connected to the conveying column 505 through the transmission belt 507. Through the setting of the stirring shaft 508, when in use, the second drive motor 506 drives the conveying column 505 to rotate, and the rotational motion of the conveying column 505 is transmitted to the stirring shaft 508 through the transmission belt 507, so that the stirring shaft 508 rotates synchronously.

[0049] Furthermore, multiple groups of stirring paddles 510 are arranged at equal intervals on the surface of the stirring shaft 508, and multiple groups of dividing plates 514 are arranged on the inner surface of the barrel 513. Through the arrangement of the stirring paddles 510, when in use, multiple groups of stirring paddles 510 are arranged at equal intervals on the surface of the stirring shaft 508. When the stirring shaft 508 rotates, each stirring paddle 510 can form a uniformly distributed stirring area in the stirring box 511. Due to the equal spacing, the force of the stirring paddles 510 on the material is more balanced, avoiding local excessive or insufficient stirring.

[0050] Example 2

[0051] A method for using a PETG hot melt adhesive label film preparation device, using a PETG hot melt adhesive label film preparation device in Example 1, further comprising the following steps:

[0052] Step 1: Add PETG resin and various additives into the barrel 513 respectively, and disperse the raw materials through the material distribution plate 514 to ensure that the raw materials can be fully mixed in the subsequent stirring process;

[0053] Step 2: Turn on the second driving motor 506 to drive the conveying column 505 to rotate, and then drive the spiral conveying shaft 504 to rotate. Under the action of the spiral conveying shaft 504, the raw materials in the loading box 501 are transported to the feeding plate 211 through the discharge port 503. The weight sensor 502 monitors the weight of the raw materials in the loading box 501 in real time, and accurately controls the discharge amount according to the preset formula ratio. While the conveying column 505 rotates, the stirring shaft 508 is driven to rotate through the transmission belt 507, and the stirring blade 510 stirs the raw materials in the stirring box 511, so that the additives and the PETG resin are further mixed evenly;

[0054] Step 3: Start the first drive motor 205 to drive the connecting shaft 202 to rotate, and make the two sets of connecting shafts 202 rotate synchronously through the chain 203, thereby driving the crushing shaft 206 and the driving shaft 207 to operate, and the raw material conveyed by the feeding mechanism 5 enters the lower panel 208, and is initially crushed under the action of the crushing shaft 206 to facilitate subsequent plasticization, and start the servo motor 214 to drive the transmission shaft 213 to rotate, and the rotating circle 215 rotates accordingly, so that the upper panel 216 opens and closes, when the upper panel 216 is closed, the sealing column 217 is embedded in the sealing groove 209, and the limiting column 218 is embedded in the limiting groove 210 to ensure the sealing and stability of the extrusion mechanism 2, and the heating tube 219 in the upper panel 216 and the lower panel 208 is turned on to heat and plasticize the raw material, and the heating temperature and time are accurately controlled according to the PETG material characteristics and production requirements. The plasticized material moves in the direction of the melt pump 3 under the push of the driving shaft 207;

[0055] Step 4: Start the cylinder 4 and adjust the working parameters of the melt pump 3 to ensure that the melt pump 3 stably extracts the plasticized material and delivers it to the subsequent processing link at a constant pressure and flow rate. The material output from the melt pump 3 enters the subsequent processing equipment for molding processing;

[0056] Step 5: After the equipment is used, turn off the motors, heating tubes 219 and cylinders 4, and clean the feeding mechanism 5, extrusion mechanism 2 and melt pump 3 to prevent material residues from affecting the next production.

[0057] Working principle: PETG resin and various additives are pre-stored in the barrel 513, and the dividing plate 514 initially separates different raw materials to avoid mutual mixing, and guides the raw materials to fall evenly to ensure the accuracy of subsequent mixing and conveying. The second driving motor 506 is turned on, which drives the conveying column 505 to rotate, and then drives the spiral conveying shaft 504 to rotate. When the conveying column 505 rotates, the transmission belt 507 attached to the outer surface moves accordingly, and then drives the stirring shaft 508 attached to it to rotate. The stirring blade 510 fixed on the outer side of the stirring shaft 508 stirs and mixes the falling raw materials in the stirring box 511, so that the additives and PETG resin are fully blended, ensuring that the materials are mixed evenly, laying a good foundation for subsequent extrusion plasticization, and then turning on the electric The magnetic valve 512 allows the raw materials to fall into the loading box 501. The raw materials in the loading box 501 are pushed by the spiral conveying shaft 504 and transported to the extrusion mechanism 2 through the discharge port 503. The weight sensor 502 monitors the weight of the raw materials in the loading box 501 in real time. According to the preset formula ratio, the discharge amount is accurately adjusted to ensure the accuracy of the formula and avoid affecting the product quality due to the imbalance of the raw material ratio. By controlling the second drive motor 506, the amount of material entering the extrusion mechanism can be adjusted to match the working rhythm of the extrusion mechanism 2, and then the first drive motor 205 is started to drive the connecting shaft 202 to rotate. Since the outer surface of the connecting shaft 202 is meshed with a chain 203, and the two groups of connecting shafts 202 are connected by the chain 203, they can achieve synchronous rotation. The rotation of the shaft 202 further drives the crushing shaft 206 fixedly connected to the other end thereof to rotate. At this time, the raw materials such as the PETG resin and additives entering from the feeding mechanism 5 through the feeding plate 211 are initially crushed under the high-speed rotation of the crushing shaft 206, which is helpful for the subsequent plasticizing process so that the materials can be heated and mixed more evenly. The crushed raw materials move to one side on the lower panel 208 as the driving shaft 207 rotates. When the raw materials need to be plasticized, the servo motor 214 is started, which drives the transmission shaft 213 to rotate, thereby rotating the rotating ring 215 fixed to the outer surface of the transmission shaft 213, and the upper panel 216 fixedly connected to the surface of one side of the rotating ring 215 moves accordingly. When the upper panel 216 moves downward to the position aligned with the lower panel When the upper panel 216 and the lower panel 208 are fitted, the sealing column 217 on one side of the upper panel 216 is embedded in the sealing groove 209 on the upper surface of the lower panel 208, and the limiting column 218 is embedded in the limiting groove 210, which ensures the sealing and stability of the inside of the extrusion mechanism 2 and prevents heat loss and impurities from entering. The upper panel 216 and the lower panel 208 are fixedly connected with a heating tube 219. When the upper panel 216 and the lower panel 208 are closed to form a closed space, the heating tube 219 starts to work to heat the raw materials therein. At a suitable temperature, the raw materials are gradually plasticized and turned into a fluid melt. In this process, the driving shaft 207 continues to rotate to push the plasticized material to move in the direction of the melt pump 3. As the driving shaft 207 continues to rotate,The plasticized material is continuously pushed to the melt pump 3 fixedly connected to the surface of one side of the lower panel 208. The melt pump 3 can stably extract the material and transport it to the subsequent processing link at a certain pressure and flow rate, completing the entire extrusion process and plasticizing evenly, improving product quality and reducing the defective rate.

[0058] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PETG hot melt adhesive label film preparation device, comprising a base (1), characterized in that: An extrusion mechanism (2) is arranged on the upper surface of the base (1), a melt pump (3) is arranged on one side surface of the extrusion mechanism (2), a cylinder (4) is fixedly connected to one side surface of the melt pump (3), and a feeding mechanism (5) is arranged on the upper surface of the extrusion mechanism (2); The extrusion mechanism (2) comprises a transmission box (201), a connecting shaft (202), a chain (203), a chain box (204), a first driving motor (205), a crushing shaft (206), a driving shaft (207), a lower panel (208), a sealing groove (209), a limiting groove (210), a feed plate (211), a fixing ring (212), a transmission shaft (213), a servo motor (214), a rotating ring (215), an upper panel (216), a sealing column (217), a limiting column (218) and a heating tube (219), wherein the bottom The upper surface of the seat (1) is fixedly connected to a transmission box (201), the inner surface of the transmission box (201) is rotatably connected to a connecting shaft (202), the outer surface of the connecting shaft (202) is meshed with a chain (203), the outer surface of the connecting shaft (202) is rotatably connected to a chain box (204), one end of the connecting shaft (202) is fixedly connected to a first drive motor (205), the other end of the connecting shaft (202) is fixedly connected to a crushing shaft (206), and one side surface of the crushing shaft (206) is fixedly connected to a drive shaft (207), a side surface of the driving shaft (207) is rotatably connected to a lower panel (208), a sealing groove (209) is provided on the upper surface of the lower panel (208), a limiting groove (210) is provided on the inner surface of the sealing groove (209), a feed plate (211) is fixedly connected to the upper surface of the lower panel (208), a fixing ring (212) is fixedly connected to a side surface of the lower panel (208), a transmission shaft (213) is rotatably connected to the inner surface of the fixing ring (212), and a side of the transmission shaft (213) is fixedly connected to the upper surface of the lower panel (208). A servo motor (214) is fixedly connected to the end, a rotating ring (215) is fixedly connected to the outer surface of the transmission shaft (213), an upper panel (216) is fixedly connected to one side surface of the rotating ring (215), a sealing column (217) is fixedly connected to one side surface of the upper panel (216), a limiting column (218) is fixedly connected to one side surface of the upper panel (216), a heating tube (219) is fixedly connected to the inner surface of the upper panel (216), and a melt pump (3) is fixedly connected to one side surface of the lower panel (208).

2. A PETG hot melt adhesive label film preparation device according to claim 1, characterized in that: The connecting shafts (202) are symmetrically arranged with respect to the central axis of the transmission box (201), and two groups of the connecting shafts (202) are connected via a chain (203).

3. A PETG hot melt adhesive label film preparation device according to claim 1, characterized in that: The crushing shafts (206) are arranged in multiple groups on the surface of the lower panel (208), and the driving shafts (207) are arranged in multiple groups on the surface of the lower panel (208).

4. The PETG hot melt adhesive label film preparation device according to claim 1, characterized in that: The inner dimension of the sealing groove (209) matches the outer dimension of the sealing column (217), and the inner dimension of the limiting groove (210) matches the outer dimension of the limiting column (218).

5. The PETG hot melt adhesive label film preparation device according to claim 1, characterized in that: The limiting grooves (210) are provided in multiple groups on the surface of the lower panel (208), and the fixing rings (212) are provided in multiple groups on the surface of the transmission shaft (213).

6. The PETG hot melt adhesive label film preparation device according to claim 1, characterized in that: The rotating ring (215) is provided in multiple groups on the surface of the transmission shaft (213), the heating tube (219) is provided in multiple groups on the inner side of the upper panel (216), and the inner side of the lower panel (208) is also provided with a heating tube (219).

7. The PETG hot melt adhesive label film preparation device according to claim 1, characterized in that: The feeding mechanism (5) comprises a loading box (501), a weight sensor (502), a discharge port (503), a spiral conveying shaft (504), a conveying column (505), a second driving motor (506), a transmission belt (507), a stirring shaft (508), a belt box (509), a stirring blade (510), a stirring box (511), a solenoid valve (512), a barrel (513) and a material dividing plate (514); the upper surface of the transmission box (201) is fixedly connected to the loading box (501); the lower surface of the loading box (501) is fixedly connected to the weight sensor (502); the lower surface of the loading box (501) is provided with a discharge port (503); the inner surface of the loading box (501) is rotatably connected to the spiral conveying shaft (504); the spiral conveying shaft (504) One end of the conveying column (505) is fixedly connected to a conveying column (505), one end of the conveying column (505) is fixedly connected to a second driving motor (506), the outer surface of the conveying column (505) is bonded to a transmission belt (507), the inner surface of the transmission belt (507) is bonded to a stirring shaft (508), the outer surface of the stirring shaft (508) is rotatably connected to a belt box (509), the outer surface of the stirring shaft (508) is fixedly connected to a stirring paddle (510), one side surface of the belt box (509) is fixedly connected to a stirring box (511), the lower surface of the stirring box (511) is fixedly connected to a solenoid valve (512), the upper surface of the stirring box (511) is fixedly connected to a barrel (513), and the inner surface of the barrel (513) is fixedly connected to a material dividing plate (514).

8. The PETG hot melt adhesive label film preparation device according to claim 7, characterized in that: The feed opening (503) matches the feed plate (211), and the stirring shaft (508) is connected to the conveying column (505) through a transmission belt (507).

9. The PETG hot melt adhesive label film preparation device according to claim 7, characterized in that: The stirring blades (510) are arranged in a plurality of groups at equal intervals on the surface of the stirring shaft (508), and the material dividing plates (514) are arranged in a plurality of groups on the inner surface of the barrel (513).

10. A method for using a PETG hot melt adhesive label film preparation device, characterized in that: The PETG hot melt adhesive label film preparation device according to any one of claims 1 to 9 further comprises the following steps: Step 1: Add PETG resin and various additives into the barrel (513) respectively, and disperse the raw materials through the material distribution plate (514) to ensure that the raw materials can be fully mixed in the subsequent stirring process; Step 2: Turn on the second driving motor (506) to drive the conveying column (505) to rotate, thereby driving the spiral conveying shaft (504) to rotate. Under the action of the spiral conveying shaft (504), the raw materials in the loading box (501) are transported to the feeding plate (211) through the discharge port (503). The weight sensor (502) monitors the weight of the raw materials in the loading box (501) in real time, and accurately controls the discharge amount according to the preset formula ratio. While the conveying column (505) rotates, the stirring shaft (508) is driven to rotate through the transmission belt (507), and the stirring blade (510) stirs the raw materials in the stirring box (511) to further mix the additives and the PETG resin evenly. Step 3: Start the first drive motor (205) to drive the connecting shaft (202) to rotate, and make the two sets of connecting shafts (202) rotate synchronously through the chain (203), thereby driving the crushing shaft (206) and the driving shaft (207) to operate, and the raw materials delivered by the feeding mechanism (5) enter the lower panel (208), and are initially crushed under the action of the crushing shaft (206) to facilitate subsequent plasticization, and start the servo motor (214) to drive the transmission shaft (213) to rotate, and the rotating circle (215) rotates accordingly, so that the upper panel (216) ) is opened and closed. When the upper panel (216) is closed, the sealing column (217) is embedded in the sealing groove (209), and the limiting column (218) is embedded in the limiting groove (210) to ensure the sealing and stability of the inside of the extrusion mechanism (2). The heating tubes (219) in the upper panel (216) and the lower panel (208) are opened to heat and plasticize the raw materials. According to the characteristics of the PETG material and production requirements, the heating temperature and time are accurately controlled. The plasticized material is pushed by the driving shaft (207) and moves in the direction of the melt pump (3); Step 4: Start the cylinder (4) and adjust the working parameters of the melt pump (3) to ensure that the melt pump (3) stably extracts the plasticized material and delivers it to the subsequent processing link at a constant pressure and flow rate. The material output from the melt pump (3) enters the subsequent processing equipment for molding processing; Step 5: After the equipment is used, turn off the motors, heating tubes (219) and cylinders (4) and other equipment, and clean the feeding mechanism (5), extrusion mechanism (2) and melt pump (3) and other components to prevent material residues from affecting the next production.

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