Plastic forming device for express packaging bag production

Abstract

The invention provides a plastic forming device for express packaging bag production, and relates to the technical field of plastic forming. A supporting vertical plate is fixedly and vertically welded to the top face of the device body, the supporting vertical plate is fixedly connected to the left end face of the device body through a connecting rod, a rectangular notch is formed in the top of the device body, and a top hanging plate is hung over the rectangular notch. The bottom face of the top hanging plate is connected with a filter plate through an electric control telescopic rod, the filter plate is located below the rectangular notch in the top of the device body, and the filter plate is connected to the main shaft in a clamped mode. When the filter plate needs to be replaced, the scraping plate is moved downwards through the electric control telescopic rod, redundant plastic on the left end face is scraped through the scraping plate when the filter plate is replaced and hoisted, the scraping plate is hoisted and retracted through the electric control telescopic rod after the filter plate is replaced, replacement of the filter plate is completed, manual operation steps are reduced, and the convenience degree of replacement of the filter plate is improved. The defect that a filter plate of an existing plastic forming device is inconvenient to replace is overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic molding devices, and specifically relates to a plastic molding device for producing express delivery packaging bags. Background Art

[0002] Based on the circular economy development of waste plastic recycling, in the express delivery packaging industry, after processing waste plastics (such as waste plastic bags and films) into particles through plastic molding and then preparing tubular films through the blown film process to produce express delivery bags is an important resource recycling method. However, during the process of using a molding device to make particles from recycled waste plastics, the following problems exist:

[0003] Inconvenient replacement of the filter plate: Recycled plastics often contain impurities such as sediment, adhesives, and metal debris. Traditional single-stage filtering devices are prone to clogging. When replacing the filter plate, a large amount of plastic is involved, resulting in a certain amount of resource waste and increasing part of the production cost. Moreover, the replacement requires the production line to stop and is fully manual operation, which is relatively cumbersome;

[0004] Unstable plastic purity: Due to aging and degradation, waste plastics have low melt strength. Existing devices are difficult to improve the mixing degree and difficult to suck out ferromagnetic impurities. Moreover, when the outlet diameters of the injection heads are different, the device is difficult to apply after replacement;

[0005] Uneven equipment damage: After the main shaft screw is worn by hard impurities in the recycled material, the rear section of the main shaft is relatively good, resulting in uneven damage. Replacing the main shaft causes resource waste and increases the production cost. Summary of the Invention

[0006] The present invention discloses a plastic molding device for producing express delivery packaging bags. Aiming at the problems of inconvenient replacement of the filter plate, unstable plastic purity, and uneven equipment damage, a top suspension plate and a scraper are innovatively designed to facilitate the replacement of the filter plate and reduce material waste. An adsorption component is designed to suck out ferromagnetic impurities, and the design of the connecting pipe can meet the application of injection heads with different diameters. The design of the main shaft and the three-stage stirring blades can evenly distribute the damage degree, with significant economic benefits.

[0007] In the first aspect of the present disclosure, a plastic molding device for producing express delivery packaging bags is provided, specifically including: a device main body, an inner chamber, and a connecting pipe; the device main body is arranged at a fixed position on the production line, a support vertical plate is fixedly and vertically welded to the top surface of the device main body, the support vertical plate is fixedly connected to the left end surface of the device main body through a connecting rod, and the stability of the support vertical plate is further strengthened through the connecting rod. A heating pipe is installed inside the device main body, and a rectangular notch is opened at the top of the device main body. A top hanging plate is suspended directly above the rectangular notch; the inner chamber is fixedly installed inside the heating pipe, a main shaft is installed inside the inner chamber, a clamping pipe is fixedly arranged inside the inner chamber, and circular notches are respectively opened at the left side of the top of the inner chamber and the left side of the top of the heating pipe. A feeding hopper is fixedly welded on the circular notches; the left end of the main shaft is coaxially fixedly connected to the driving shaft of a driving motor; the bottom of the feeding hopper communicates with the inner cavity of the inner chamber, and a partition plate is fixedly welded inside the feeding hopper. A transmission shaft is rotationally clamped inside the partition plate, and the transmission shaft is connected to the driving shaft of the driving motor through a transmission belt; the outer wall of the left section of the connecting pipe is provided with threads and is threadedly engaged and connected to the right side of the device main body. The main shaft passes through the inside of the connecting pipe, and an outer connecting ring is welded to the right end of the connecting pipe; an adsorption assembly composed of an injection head and an adsorption ring is installed on the right end surface of the outer connecting ring; the bottom surface of the top hanging plate is connected to a filter plate through an electric control telescopic rod. The filter plate is located below the rectangular notch at the top of the device main body, and the filter plate is clamped on the main shaft; the outside of the injection head is threadedly connected to the adsorption ring, and two screwing plates are fixedly connected to the outer wall of the adsorption ring. After the adsorption ring is installed outside the injection head by rotating the screwing plates, ferromagnetic impurities inside the plastic can be adsorbed before injection extrusion, ensuring the purity of the plastic after extrusion.

[0008] In at least some embodiments, a fixing frame is fixedly welded to the inner wall of the feeding hopper. The end of the fixing frame is an annular structural plate, and a feeding stirring shaft is rotationally clamped inside through a socket bearing. The feeding stirring shaft is a spiral structure. The top end of the feeding stirring shaft is fixedly connected to a small bevel gear. A large bevel gear is arranged at the end of the transmission shaft. The large bevel gear is meshed and connected to the small bevel gear at the top end of the feeding stirring shaft. A protective cover is arranged outside the meshing part of the end of the transmission shaft and the two bevel gears. The protective cover is fixedly connected to the fixing frame. The protective cover can protect the outside of the meshing part of the large bevel gear and the small bevel gear, preventing the plastic feeding from affecting the meshing transmission of the bevel gears.

[0009] In at least some embodiments, a protruding filleted fixed rod is welded to the inner wall of the connecting pipe. By cooperating the fixed rod with the stirring rod, the plastic passing through the filter plate can be stirred and fused again to achieve sufficient mixing. The right end face of the outer connecting ring is integrally designed with a protruding external thread connecting ring. After the left section of the connecting pipe is threadedly connected to the device body, the injection head can be threadedly engaged and connected to the outer connecting ring. A connecting frame is fixedly welded to the inner wall of the connecting pipe. The connecting frame has a structure with round rods at both ends and a ring in the middle. The main shaft passes through the inside of the ring. The gap between the inner wall of the ring and the main shaft is larger than the thickness of the stirring rod, but the inner wall of the rightmost ring fits against the outer wall of the main shaft.

[0010] In at least some embodiments, a moving pipe is installed inside the inner bin and on the right side of the clamping pipe. A flat plate with an inclined top surface is integrally provided on the upper part of the moving pipe. An electric control telescopic rod is installed on the left end face of the flat plate. The fixed end of the electric control telescopic rod is installed inside the device body. When the moving pipe moves to the leftmost position, the inner wall of the moving pipe is smoothly connected to the inner wall of the clamping pipe. The electric control telescopic rod is electrically connected to the external assembly line PLC controller. When the moving pipe moves to the rightmost position, the left end of the moving pipe is clamped inside the clamping pipe, and at this time, the annular groove opened on the right end face of the moving pipe closely fits against the left end face of the filter plate, so as to ensure the sealing effect and ensure no leakage when fitting with the filter plate. A fixed rod is fixedly and vertically welded to the inner bottom surface of the inner bin. A filter hole is opened inside the fixed rod, and the aperture of the filter hole is the same as that of the filter plate. The main shaft is supported in the arc-shaped groove at the top end of the fixed rod. A mechanical sensor is arranged at the top end of the fixed rod and is electrically connected to the external control end of the assembly line. An electromagnet is embedded inside the fixed rod and is electrically connected to the external assembly line PLC controller through a circuit. A receiving pipe is installed inside the inner bin and on the right side of the filter plate. Two annular grooves are opened on the left end face of the receiving pipe. The left end face of the receiving pipe fits against the right end face of the filter plate. The right outer edge of the receiving pipe is welded to the inner wall of the inner bin.

[0011] In at least some embodiments, two groups of electric control telescopic rods are installed at the bottom of the top suspension plate. The moving end of the left electric control telescopic rod is fixedly connected with a scraper. The bottom surface of the horizontal plate of the scraper is inclined and has the same inclination angle as the inclined surface of the flat plate on the top of the moving pipe. Rectangular plates are arranged on the front and rear sides of the scraper, and the distance between the rectangular plates is smaller than the diameter of the filter plate. A notch is opened at the bottom of the filter plate, and the fixed rod is clamped inside the notch. A threaded hole is opened at the top of the filter plate, and the moving end of the right electric control telescopic rod at the bottom surface of the top suspension plate is threadedly connected inside the threaded hole through a double-headed threaded rod. When the electric control telescopic rod is started through the external control end of the assembly line to move the scraper downward, after the inclined surface of the horizontal plate of the scraper fits against the inclined surface of the flat plate on the top of the moving pipe, the telescopic rod inside the device body is started through the control end to drive the moving pipe to move to the left for replacing the filter plate.

[0012] In at least some embodiments, the main shaft has three-stage spiral stirring blades with decreasing spacing from left to right. The three-stage stirring blades on the right side of the main shaft are located inside the threaded section from the receiving pipe to the connecting pipe. A stirring rod is fixedly welded on the main shaft and on the right side of the three-stage stirring blades. The stirring rods are arranged in a spiral shape. Compared with traditional single-stage stirring blades, the setting of the three-stage stirring blades can achieve more complete fusion stirring and gradually improve the degree of mixing.

[0013] In at least some embodiments, a motor support frame is fixedly welded to the left end of the top surface of the device body, a thermal resistance wire is buried inside the heating tube and is connected to an external assembly line PLC controller through a circuit, the cross-section of the motor support frame is I-shaped, and right-angled triangle reinforcement plates are welded on the front and back sides respectively. The motor support frame is used to provide an installation basis for the drive motor, while reducing the shielding area of the drive motor and ensuring that the heat dissipation of the drive motor is not affected, and the reinforcement plate can increase the stability of the motor support frame.

[0014] The present invention provides a method for using a plastic molding device for producing express packaging bags, which has the following beneficial effects:

[0015] When the present invention is in use, when the filter plate needs to be replaced, the electromagnet inside the fixing rod is cut off, the scraper is moved downward by the electrically-controlled telescopic rod, and the scraper is used to scrape off excess plastic on the left end surface when the filter plate is lifted for replacement. After the filter plate is replaced, the scraper is lifted and retracted by the electrically-controlled telescopic rod to complete the replacement of the filter plate, thereby reducing the manual operation steps and improving the convenience of replacing the filter plate.

[0016] In addition, compared with the traditional single-stage stirring blade, the three-stage stirring blade setting can achieve more complete fusion stirring, and at the same time can gradually improve the degree of mixing, and adsorb the ferromagnetic impurities inside the plastic before injection molding and extrusion, ensuring the purity of the plastic after extrusion.

[0017] In addition, the setting of graded stirring blades can even out the degree of damage to the stirring blades, avoiding the waste caused by the stirring blades on the left section of the main shaft being damaged and needing to be replaced while the stirring blades on the right section of the main shaft are still in good condition but the entire main shaft needs to be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture:

[0021] Figure 1 The schematic diagram of the structure of the main body of the device of the present invention is shown;

[0022] Figure 2 The structural schematic diagram when the connecting pipe of the present invention is installed on the device main body is shown;

[0023] Figure 3 The sectional structural schematic diagram of the inner bin of the present invention is shown;

[0024] Figure 4 The sectional structural schematic diagram of the feed hopper of the present invention is shown;

[0025] Figure 5 The unfolded structural schematic diagram among the moving pipe, the filter plate and the receiving pipe of the present invention is shown;

[0026] Figure 6 The structural schematic diagram of the filter plate of the present invention is shown;

[0027] Figure 7 The structural schematic diagram of the main shaft of the present invention is shown;

[0028] Figure 8 The structural schematic diagram of the adsorption assembly of the present invention is shown;

[0029] Figure 9 The present invention is shown Figure 7 The enlarged structural schematic diagram at position A in.

[0030] List of reference numerals

[0031] 1. Device main body; 101. Support vertical plate; 102. Motor support frame; 103. Heating pipe; 2. Inner bin; 201. Clamping pipe; 202. Moving pipe; 203. Fixed rod; 204. Receiving pipe; 3. Feed hopper; 301. Partition board; 302. Transmission shaft; 3021. Protective cover; 303. Fixed frame; 304. Feed stirring shaft; 4. Main shaft; 401. Driving motor; 402. Three-stage stirring blade; 403. Stirring rod; 5. Connecting pipe; 501. Connecting frame; 502. Outer connecting ring; 6. Top suspension plate; 601. Scraper; 602. Filter plate; 7. Adsorption assembly; 71. Injection molding head; 72. Adsorption ring. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0033] Embodiment 1: Please refer to the attached Figure 1 to the attached Figure 9 :

[0034] The present invention provides a plastic molding device for the production of express delivery packaging bags, including: a device main body 1, an inner chamber 2, and a connecting pipe 5; the device main body 1 is arranged at a fixed position on the production line, and a support vertical plate 101 is fixedly and vertically welded to the top surface of the device main body 1. The support vertical plate 101 is fixedly connected to the left end face of the device main body 1 through a connecting rod, and the stability of the support vertical plate 101 is further strengthened through the connecting rod. A heating pipe 103 is installed inside the device main body 1, and a rectangular notch is provided at the top of the device main body 1. A top suspension plate 6 is suspended directly above the rectangular notch; the inner chamber 2 is fixedly installed inside the heating pipe 103, a main shaft 4 is installed inside the inner chamber 2, a clamping pipe 201 is fixedly arranged inside the inner chamber 2, and circular notches are respectively provided at the upper left side of the inner chamber 2 and the upper left side of the heating pipe 103. A feeding hopper 3 is fixedly welded on the circular notches; the left end of the main shaft 4 is coaxially and fixedly connected to the drive shaft of a drive motor 401; the bottom of the feeding hopper 3 communicates with the inner cavity of the inner chamber 2, and a partition plate 301 is fixedly welded inside the feeding hopper 3. A transmission shaft 302 is rotatably clamped inside the partition plate 301, and the transmission shaft 302 is connected to the drive shaft of the drive motor 401 through a transmission belt; the outer wall of the left section of the connecting pipe 5 is provided with threads and is threadedly engaged and connected to the right side of the device main body 1. The main shaft 4 passes through the inside of the connecting pipe 5, and an outer connecting ring 502 is welded to the right end of the connecting pipe 5; an adsorption assembly 7 composed of an injection head 71 and an adsorption ring 72 is installed on the right end face of the outer connecting ring 502; the bottom surface of the top suspension plate 6 is connected to a filter plate 602 through an electric control telescopic rod. The filter plate 602 is located below the rectangular notch at the top of the device main body 1, and the filter plate 602 is clamped on the main shaft 4; the outside of the injection head 71 is threadedly connected to the adsorption ring 72, and two screwing plates are fixedly connected to the outer wall of the adsorption ring 72. After the adsorption ring 72 is rotated and installed outside the injection head 71 by using the screwing plates, ferromagnetic impurities inside the plastic can be adsorbed before injection extrusion, ensuring the purity of the plastic after extrusion.

[0035] In the embodiments of the present disclosure, please refer to the attached Figure 3 and the attached Figure 5As shown in the figure, a moving pipe 202 is installed inside the inner bin 2 and on the right side of the clamping pipe 201. A flat plate with an inclined top surface is integrally arranged on the upper part of the moving pipe 202. An electric control telescopic rod is installed on the left end surface of the flat plate. The fixed end of the electric control telescopic rod is installed inside the device main body 1. When the moving pipe 202 moves to the leftmost position, the inner wall of the moving pipe 202 is smoothly connected to the inner wall of the clamping pipe 201. The electric control telescopic rod is electrically connected to the external assembly line PLC controller. When the moving pipe 202 moves to the rightmost position, the left end of the moving pipe 202 is clamped inside the clamping pipe 201. At this time, the annular groove opened on the right end surface of the moving pipe 202 is closely attached to the left end surface of the filter plate 602, so as to ensure the sealing effect and ensure no leakage when it is attached to the filter plate 602. The electric control telescopic rod inside the device main body 1 is used to control the movement of the flat plate on the upper part of the moving pipe 202, so as to adjust the position of the moving pipe 202 and cooperate with the replacement of the filter plate 602.

[0036] In the embodiment of the present disclosure, please refer to the attached Figure 3 and the attached Figure 5 As shown in the figure, two groups of electric control telescopic rods are installed at the bottom of the top suspension plate 6. The moving end of the left electric control telescopic rod is fixedly connected with a scraper 601. The bottom surface of the cross plate of the scraper 601 is inclined and has the same inclination angle as the inclined surface of the flat plate on the top of the moving pipe 202. Rectangular plates are arranged on the front and rear sides of the scraper 601, and the distance between the rectangular plates is smaller than the diameter of the filter plate 602. When the electric control telescopic rod is started through the external assembly line control end to lower the scraper 601, after the inclined surface of the lower cross plate of the scraper 601 fits to the inclined surface of the flat plate on the top of the moving pipe 202, the telescopic rod inside the device main body 1 is started through the control end to drive the moving pipe 202 to move leftward. When the filter plate 602 is replaced and lifted, the left end surface of the filter plate 602 scrapes off the excess plastic through the scraper 601. After the replacement of the filter plate 602 is completed, the scraper 601 is lifted and retracted through the electric control telescopic rod. At this time, the electric control telescopic rod inside the device main body 1 pushes the moving pipe 202 to reset until it fits to the left end surface of the new filter plate 602.

[0037] In the embodiment of the present disclosure, please refer to the attached Figure 1 and the attached Figure 3As shown in the figure, a fixing rod 203 is fixedly and vertically welded to the inner bottom surface of the inner bin 2. A filtering hole is formed inside the fixing rod 203, and the aperture of the filtering hole is the same as that of the filter plate 602. The main shaft 4 is supported in the arc-shaped groove at the top end of the fixing rod 203. A mechanical sensor is arranged at the top end of the fixing rod 203 and is electrically connected to the external assembly line control end. An electromagnet is embedded inside the fixing rod 203 and is electrically connected to the external assembly line PLC controller through a circuit. A receiving pipe 204 is installed on the right side of the filter plate 602 inside the inner bin 2. Two annular grooves are formed on the left end surface of the receiving pipe 204. The left end surface of the receiving pipe 204 is attached to the right end surface of the filter plate 602. The outer edge of the right end of the receiving pipe 204 is welded to the inner wall of the inner bin 2. When the filter plate 602 moves downward and fits with the left end surface of the receiving pipe 204, the molten plastic filtered by the filter plate 602 is continuously conveyed to the right through the receiving pipe 204. The converging structure of the receiving pipe 204 is used to fuse the filtered plastic, and the two annular grooves are used to ensure the sealing between the receiving pipe 204 and the filter plate 602.

[0038] In the embodiment of the present disclosure, please refer to the attached Figure 1 and the attached Figure 3 As shown in the figure, a motor support frame 102 is fixedly welded to the left end of the top surface of the device main body 1. An electric heating resistance wire is buried inside the heating pipe 103 and is connected to the external assembly line PLC controller through a circuit. The cross-section of the motor support frame 102 is in an I shape, and right-angled triangular reinforcement plates are welded to the front and rear sides respectively. The motor support frame 102 provides an installation foundation for the driving motor 401, and at the same time, it can reduce the shielding area of the driving motor 401 to ensure that the heat dissipation of the driving motor 401 is not affected, and the reinforcement plates can increase the stability of the motor support frame 102.

[0039] In the embodiment of the present disclosure, please refer to the attached Figure 3 and the attached Figure 4 As shown in the figure, a fixing frame 303 is fixedly welded to the inner wall of the feed hopper 3. The end of the fixing frame 303 is an annular structural plate, and a feed stirring shaft 304 is rotatably clamped inside through a socket bearing. The feed stirring shaft 304 is a spiral structure. A small bevel gear is fixedly connected to the top end of the feed stirring shaft 304. A large bevel gear is arranged at the end of the transmission shaft 302. The large bevel gear is meshed with the small bevel gear at the top end of the feed stirring shaft 304. A protective cover 3021 is arranged outside the meshing part of the end of the transmission shaft 302 and the two bevel gears. The protective cover 3021 is fixedly connected to the fixing frame 303. The protective cover 3021 can protect the outside of the meshing part of the large bevel gear and the small bevel gear to avoid affecting the meshing transmission of the bevel gears when feeding plastic. The fixing frame 303 provides an installation foundation for the feed stirring shaft 304 and the protective cover 3021. Through a transmission belt, the driving motor 401 can synchronously drive the main shaft 4 and the transmission shaft 302, so that the main shaft 4 can rotate during feeding.

[0040] In the embodiments of the present disclosure, please refer to the attached Figure 8 and attached Figure 9 As shown in the content, the inner wall of the connecting tube 5 is welded with a protruding chamfered fixed rod, and the fixed rod is used in conjunction with the stirring rod 403 to stir and fuse the plastic passing through the filter plate 602 again to achieve full mixing. The right end face of the outer connecting ring 502 is integrally designed with a protruding external threaded connecting ring. After the left section of the connecting tube 5 is connected to the device body 1 through threads, the injection head 71 can be connected to the outer connecting ring 502 through threaded engagement. The inner wall of the connecting tube 5 is fixedly welded with a connecting frame 501, and the connecting frame 501 is a round rod at both ends and a circular ring in the middle. The inside of the ring is penetrated by the main shaft 4, and the gap between the inner wall of the ring and the main shaft 4 is larger than the thickness of the stirring rod 403, but the inner wall of the rightmost ring fits against the outer wall of the main shaft 4. When the connecting tube 5 is connected to the device body 1 by threads, the stirring rod 403 can pass through the ring in the middle of the connecting frame 501, ensuring that the connecting tube 5 is not affected by the stirring rod 403 during assembly and disassembly. By replacing the connecting tubes 5 with different closing diameters, injection molding of various sizes can be achieved. At the same time, the rightmost ring can support the end of the main shaft 4, thereby ensuring that the two ends of the main shaft 4 remain balanced.

[0041] In the embodiments of the present disclosure, please refer to the attached Figure 6 As shown in the content, a notch is provided at the bottom of the filter plate 602, and the fixing rod 203 is clamped inside the notch, and a threaded hole is provided at the top of the filter plate 602, and the inside of the threaded hole is connected to the movable end of the electric telescopic rod on the right side of the bottom surface of the top hanging plate 6 through a double-headed threaded rod connected by a thread. After the double-headed threaded rod is rotated to connect the filter plate 602 and the movable end of the electric telescopic rod on the right side of the bottom surface of the top hanging plate 6, the filter plate 602 can be lowered to the inside of the inner warehouse 2 through the electric telescopic rod. After the filter plate 602 is pressed to the top of the fixing rod 203, it touches the mechanical sensor on the top of the fixing rod 203, so that the control end can determine that the filter plate 602 has been installed in place, and the electric telescopic rod can keep the position of the filter plate 602 fixed, and the internal electromagnet adsorption of the fixing rod 203 can increase the connection stability with the filter plate 602.

[0042] In the embodiments of the present disclosure, please refer to the attached Figure 7 and attached Figure 8As shown in the figure, the main shaft 4 has three-stage spiral stirring blades with gradually decreasing spacing from left to right. The three-stage stirring blade 402 on the right side of the main shaft 4 is located inside the threaded section of the connecting pipe 5 from the receiving pipe 204. On the right side of the main shaft 4 and the three-stage stirring blade 402, a stirring rod 403 is fixedly welded. The stirring rods 403 are arranged in a spiral shape. The setting of the three-stage stirring blade 402 can achieve more sufficient mixing and stirring compared with the traditional single-stage stirring blade, and at the same time, it can gradually improve the mixing degree. After the express packaging bag requires different material requirements and the ratio is adjusted, this device can still ensure a fine mixing degree. Moreover, the setting of the graded stirring blades can evenly distribute the damage degree of the stirring blades, avoiding waste caused by the need to replace the entire main shaft 4 when the left section of the main shaft 4 is damaged while the right section of the main shaft 4 is still in good condition.

[0043] Embodiment 2: On the basis of Embodiment 1, an electric resistance wire can be added inside the feeding stirring shaft 304. The electric resistance wire is electrically connected to the external assembly line PLC controller. After the plastic raw material is put into the feeding hopper 3, it can be fed at a constant speed through the feeding stirring shaft 304, and at the same time, the plastic raw material can be preheated. After the plastic raw material enters the inner bin 2, the heating time can be shortened, the melting speed can be increased, and the mixing uniformity can be improved.

[0044] The working principle of this embodiment is as follows: First, after the plastic raw material is put into the feeding hopper 3, the driving motor 401 is started through the control end, and the main shaft 4 is driven to rotate by the driving shaft. At the same time, the transmission shaft 302 is also driven to rotate through the transmission belt. The feeding stirring shaft 304 is rotated through the meshing of the bevel gears, and the raw materials are evenly fed into the inner bin 2. The three-stage stirring spiral blades on the main shaft 4 are used to heat and plasticize the plastic. At the same time, the PLC control system is used for real-time monitoring. After passing through the filter plate 602, fine filtration of impurities is achieved. The ferromagnetic impurities inside the plastic are adsorbed by the adsorption ring 72, and finally, it is extruded and formed through the injection head 71;

[0045] When the filter plate 602 needs to be replaced, the electromagnet inside the fixing rod 203 is cut off, and the electric control telescopic rod moves the scraping plate 601 downward until the inclined surface of the cross plate fits the inclined surface of the flat plate at the top of the moving pipe 202. At this time, the control end starts the telescopic rod inside the device main body 1 to drive the moving pipe 202 to move to the left. When the filter plate 602 is replaced and lifted, the left end surface of the filter plate 602 scrapes off the excess plastic through the scraping plate 601. After the filter plate 602 is replaced, it is lowered by the electric control telescopic rod. After the filter plate 602 presses against the top of the fixing rod 203 and touches the mechanical sensor at the top of the fixing rod 203, the control end can determine that the filter plate 602 has been installed in place. The scraping plate 601 is lifted and retracted by the electric control telescopic rod. At this time, the electric control telescopic rod inside the device main body 1 pushes the moving pipe 202 to reset until it fits the left end surface of the new filter plate 602, completing the replacement of the filter plate 602.

Claims

1. A plastic molding device for producing express delivery packaging bags, characterized in that, Including: A device main body (1), an inner bin (2) and a connecting pipe (5); the device main body (1) is placed at a fixed position on the production line, a support vertical plate (101) is fixedly and vertically welded on the top surface of the device main body (1), a heating pipe (103) is installed inside the device main body (1), and a rectangular notch is opened at the top of the device main body (1), and a top suspension plate (6) is suspended directly above the rectangular notch; The inner bin (2) is fixedly installed inside the heating pipe (103), a main shaft (4) is installed inside the inner bin (2), a clamping pipe (201) is fixedly arranged inside the inner bin (2), and circular notches are respectively opened at the left side of the top of the inner bin (2) and the left side of the top of the heating pipe (103), and a feed hopper (3) is fixedly welded on the circular notches; The left end of the main shaft (4) is coaxially fixedly connected to the drive shaft of a drive motor (401); the bottom of the feed hopper (3) communicates with the inner cavity of the inner bin (2), and a partition plate (301) is fixedly welded inside the feed hopper (3), a transmission shaft (302) is rotatably clamped inside the partition plate (301), and the transmission shaft (302) is connected to the drive shaft of the drive motor (401) through a transmission belt; The outer wall of the left section of the connecting pipe (5) is provided with threads and is threadedly engaged and connected to the right side of the device main body (1), the main shaft (4) passes through the inside of the connecting pipe (5), and an outer connecting ring (502) is welded to the right end of the connecting pipe (5); an adsorption assembly (7) composed of an injection head (71) and an adsorption ring (72) is installed on the right end face of the outer connecting ring (502); The bottom surface of the top suspension plate (6) is connected to a filter plate (602) through an electric control telescopic rod, the filter plate (602) is located below the rectangular notch at the top of the device main body (1), and the filter plate (602) is clamped on the main shaft (4); The outside of the injection head (71) is threadedly connected to the adsorption ring (72), and two screwing plates are fixedly connected to the outer wall of the adsorption ring (72).

2. The plastic forming device for producing express delivery packaging bags according to claim 1, characterized in that, A motor support frame (102) is fixedly welded to the left end of the top surface of the device main body (1), electric resistance wires are buried inside the heating pipe (103) and are electrically connected to an external production line PLC controller, the cross section of the motor support frame (102) is in an I shape and right-angled triangle reinforcing plates are respectively welded on the front and rear sides.

3. A plastic forming device for producing express delivery packaging bags according to claim 1, characterized in that, A moving pipe (202) is installed inside the inner bin (2) and on the right side of the clamping pipe (201), a flat plate with an inclined top surface is integrally arranged on the upper part of the moving pipe (202), an electric control telescopic rod is installed on the left end face of the flat plate, the fixed end of the electric control telescopic rod is installed inside the device main body (1), and when the moving pipe (202) moves to the leftmost position, the inner wall of the moving pipe (202) is smoothly connected to the inner wall of the clamping pipe (201), the electric control telescopic rod is electrically connected to the external production line PLC controller, and when the moving pipe (202) moves to the rightmost position, the left end of the moving pipe (202) is clamped inside the clamping pipe (201), and at this time, an annular groove opened on the right end face of the moving pipe (202) is closely attached to the left end face of the filter plate (602).

4. The plastic forming device for producing express delivery packaging bags according to claim 3, characterized in that, The inner bottom surface of the inner bin (2) is fixed and vertically welded with a fixing rod (203), a filtering hole is provided inside the fixing rod (203), and the aperture of the filtering hole is the same as the aperture of the filter plate (602), the main shaft (4) is supported in the arc groove at the top end of the fixing rod (203), a mechanical sensor is provided at the top end of the fixing rod (203) and is electrically connected to the external assembly line control end, and an electromagnet is embedded inside the fixing rod (203) and is electrically connected to the external assembly line PLC controller through a circuit, a receiving tube (204) is installed inside the inner bin (2) and on the right side of the filter plate (602), two annular grooves are provided on the left end surface of the receiving tube (204), the left end surface of the receiving tube (204) is attached to the right end surface of the filter plate (602), and the right end outer edge of the receiving tube (204) is welded to the inner wall of the inner bin (2).

5. A plastic molding device for producing express delivery packaging bags according to claim 1, characterized in that, A fixing frame (303) is fixedly welded to the inner wall of the feed hopper (3); the end of the fixing frame (303) is an annular structural plate and a feed stirring shaft (304) is rotatably clamped inside the fixing frame (303) via a sleeve bearing; the feed stirring shaft (304) is a spiral structure; a small bevel gear is fixedly connected to the top of the feed stirring shaft (304); a large bevel gear is arranged at the end of the transmission shaft (302); the large bevel gear is meshed with the small bevel gear at the top of the feed stirring shaft (304); a protective cover (3021) is arranged at the end of the transmission shaft (302) and outside the meshing point of the two bevel gears; the protective cover (3021) is fixedly connected to the fixing frame (303).

6. A plastic molding device for producing express delivery packaging bags according to claim 4, characterized in that, The main shaft (4) is provided with three-stage spiral stirring blades with decreasing spacing from left to right. The three-stage stirring blade (402) on the right side of the main shaft (4) is located inside the threaded section from the receiving tube (204) to the connecting tube (5). A stirring rod (403) is fixedly welded on the main shaft (4) and on the right side of the three-stage stirring blade (402). The stirring rod (403) is arranged in a spiral shape.

7. A plastic molding device for producing express delivery packaging bags according to claim 6, characterized in that, The inner wall of the connecting tube (5) is welded with a protruding chamfered fixed rod, the right end face of the external connecting ring (502) is integrally designed with a protruding external threaded connecting ring, and the inner wall of the connecting tube (5) is fixedly welded with a connecting frame (501), the connecting frame (501) is a structure with round rods at both ends and a circular ring in the middle, the inside of the circular ring is penetrated by the main shaft (4), the gap between the inner wall of the circular ring and the main shaft (4) is larger than the thickness of the stirring rod (403), and the inner wall of the rightmost circular ring is in contact with the outer wall of the main shaft (4).

8. The plastic forming device for producing express delivery packaging bags according to claim 3, characterized in that, Two groups of electrically controlled telescopic rods are installed at the bottom of the top hanging plate (6), and the movable end of the left electrically controlled telescopic rod is fixedly connected to a scraper (601). The bottom surface of the horizontal plate of the scraper (601) is an inclined surface and has the same inclination angle as the inclined surface of the top flat plate of the moving tube (202). Rectangular plates are arranged on the front and rear sides of the scraper (601), and the spacing between the rectangular plates is smaller than the diameter of the filter plate (602).

9. The plastic forming device for producing express delivery packaging bags according to claim 8, wherein, The bottom of the filter plate (602) is provided with a notch, and the inside of the notch is clamped with a fixing rod (203), and the top of the filter plate (602) is provided with a threaded hole, and the inside of the threaded hole is connected to the movable end of the right electric control telescopic rod on the bottom surface of the top hanging plate (6) through a double-headed threaded rod connected by a thread.

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