Efficient manufacturing device for plastic bags

Abstract

The invention discloses an efficient plastic bag manufacturing device, and belongs to the technical field of plastic bag manufacturing equipment.The efficient plastic bag manufacturing device comprises a plastic film extruder body, a plastic film is extruded from the output end of the plastic film extruder body, a base table is installed outside the plastic film extruder body, and a plurality of supporting columns are fixedly installed at the top end of the base table; two traction assemblies are installed at the top end of the supporting column and are arranged in a central symmetry mode. According to the plastic film hot-sealing and separating device, cyclic operation of drawing, hot-sealing, hot-cutting and separating of plastic films is achieved, leftover materials of the plastic films can be effectively avoided, the conversion rate of the plastic films to plastic bags is greatly increased, and the production efficiency of the plastic bags is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic bag manufacturing equipment, and more specifically, to a highly efficient plastic bag manufacturing device. Background Art

[0002] Plastic bags are widely used because of their low price and good moisture-proof performance. Plastic bags are made by sealing a plastic roll or a plastic film at one end. The production of plastic bags is completed on a plastic bag making machine. The plastic roll or plastic film is heated and pressed by a heat-sealing heating block, so that the two layers of the plastic roll or plastic film are partially melted and then adhered to each other. In order to avoid direct contact between the plastic roll or plastic film and the heat-sealing heating block, and to avoid damage to the plastic roll or plastic film due to excessive temperature of the heat-sealing heating block, a high-temperature cloth is provided on the heat-sealing heating block to protect the plastic roll or plastic film.

[0003] At present, when producing plastic bags, the formed plastic film is cut based on the specifications of the produced plastic bags. In the cutting method in the prior art, after the plastic bag is cut out of the plastic film, a certain amount of scraps will remain to meet the needs of continuous winding of the plastic bag, and these scraps will be directly discarded or melted for secondary use in subsequent use. This operation method will lead to a decrease in the conversion rate of the plastic film into plastic bags, thereby affecting the production efficiency of the plastic bags.

[0004] Therefore, in view of this, the existing structure is studied and improved to provide a plastic bag efficient manufacturing device, in order to achieve a more practical purpose. Summary of the invention

[0005] 1. Technical issues to be solved In view of the problems existing in the prior art, the purpose of the present invention is to provide an efficient plastic bag manufacturing device, which realizes the cyclic operation of plastic film pulling, heat sealing, heat cutting and separation, can effectively avoid the emergence of scraps of plastic film, greatly improves the conversion rate of plastic film to plastic bags, and improves the production efficiency of plastic bags.

[0006] 2. Technical solution To solve the above problems, the present invention adopts the following technical solutions.

[0007] The high-efficiency manufacturing device of plastic bags comprises a plastic film extruder main body, the output end of the plastic film extruder main body extrude a plastic film, a base is installed outside the plastic film extruder main body, a plurality of support columns are fixedly installed on the top of the base, two traction assemblies are installed on the top of the support column, and the two traction assemblies are arranged symmetrically with respect to the center; The top of the carriage is fixedly provided with a second stepper motor, and the output shaft of the second stepper motor is connected to the first stepper motor through the bearing to form a free rotation between the first stepper motor and the second stepper motor. The heat sealing and hot cutting assembly includes a gantry, which is installed on the side and directly above the base, and the gantry and the base are welded as one body, an oil cylinder is fixedly installed on the top of the gantry, and two output shafts of the oil cylinder are fixedly connected to a power supply box, a heat sealing heating block is fixedly installed on the bottom end of the power supply box, an electric telescopic rod is fixedly installed on the side of the power supply box, a hot cutting knife is fixedly installed on the bottom end of the electric telescopic rod, and the heat sealing heating block and the hot cutting knife do not contact each other.

[0008] Furthermore, a plurality of hydraulic telescopic rods are fixedly mounted on the top of the base, and the tops of the plurality of hydraulic telescopic rods are respectively fixed to corresponding positions of the bottom of the carrier plate; The plurality of hydraulic telescopic rods are controlled by synchronous signals.

[0009] Furthermore, the carrier plate includes a high plate, an inclined plate and a low plate, and the high plate, the inclined plate and the low plate form a folded line structure, and the three are integrally formed; The inclined plate is located directly below the hot cutting knife.

[0010] Furthermore, a plurality of infrared signal receiving heads are fixedly connected to the top of the high-position plate by bolts, and the plurality of infrared signal receiving heads are arranged in a straight line at uniform and equidistant intervals; Several infrared signal receiving heads are independently controlled.

[0011] Furthermore, an infrared signal transmitter is fixedly installed at the bottom center of each lower clamping plate, and the infrared signal transmitter and the infrared signal receiving head form signal transmission and reception; The two infrared signal transmitters or the plurality of infrared signal transmitters are all located on the same vertical plane.

[0012] Furthermore, three cylindrical sliders are fixedly mounted on the bottom end of the slide, and a limited sliding groove is provided on the long guide rail, and the three cylindrical sliders slide in the limited sliding groove; The cylindrical slider is always in contact with the inner wall of the limiting slide groove; The limiting sliding groove is a groove body structure which is transparent from top to bottom.

[0013] Further, the slide is a steel structure with porous grooves; A blocking piece is fixedly arranged at the bottom end of the slide, and the blocking piece contacts the side surface of the long guide rail.

[0014] Furthermore, four metal slide bars are fixed on the side of the slide, four through holes are opened at one end of the upper clamping plate and the lower clamping plate, and a sliding sleeve is fixed inside each through hole, and the sliding sleeve is sleeved on the side of the metal slide bar, and the sliding sleeve slides freely along the metal slide bar; A threaded hole is provided in the middle of one end of the upper clamping plate and the lower clamping plate, and the upper clamping plate and the lower clamping plate are respectively threadedly connected to the vertical screw rod module through the corresponding threaded holes; The threaded holes on the upper clamping plate and the threaded holes on the lower clamping plate have equal pitches and opposite spiral directions.

[0015] Furthermore, a through groove is formed on the upper clamping plate, the through groove passes through the upper and lower surfaces of the upper clamping plate, and the length of the through groove is greater than the width of the plastic film; An upper embedding groove is formed on the lower end surface of the upper clamping plate, and an upper composite plate is fixedly installed inside the upper embedding groove.

[0016] Furthermore, a knife groove is provided on the upper end surface of the lower clamping plate, and the width of the knife groove is greater than the width of the hot cutting knife; A lower embedding groove is formed on the lower end surface of the lower clamping plate, and a lower composite plate is fixedly installed inside the lower embedding groove. The lower composite plate has the same structure as the upper composite plate, and the two are symmetrically arranged.

[0017] 3. Beneficial effects Compared with the prior art, the advantages of the present invention are: In this solution, after the plastic film is extruded from the main body of the plastic extruder, the first traction component performs the traction operation of the plastic film until it is pulled to the required position for heat sealing and heat cutting. When the plastic film is heat sealed and heat cut, the second traction component completes the traction work. When the plastic film at the first traction component completes the heat sealing and heat cutting, the first traction component and the second traction component exchange the operation content and cycle back and forth, thereby realizing the cyclic operation of traction, heat sealing, heat cutting and separation of the plastic film. This operation method can effectively avoid the appearance of scraps of the plastic film, greatly improve the conversion rate of the plastic film to plastic bags, and improve the production efficiency of plastic bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the plane structure in the present invention; Figure 3 The structure of the traction assembly in the present invention is shown in FIG. Figure 1 ; Figure 4 The structure of the traction assembly in the present invention is shown in FIG. Figure 2 ; Figure 5 is a schematic diagram of the cross-sectional structure of the long guide rail in the present invention; Figure 6 It is a structural schematic diagram of the slide in the present invention; Figure 7 It is a structural schematic diagram of the upper clamping plate in the present invention; Figure 8 The structure diagram of the lower clamping plate in the present invention is shown in FIG. Figure 1 ; Fig. 9 The structure diagram of the lower clamping plate in the present invention is shown in FIG. Figure 2 ; Fig.10 It is a structural schematic diagram of the carrier board in the present invention; Fig.11 It is a schematic diagram of the structure of the heat sealing and hot cutting component in the present invention.

[0019] Description of the numbers in the figure: 1. Plastic film extruder main body; 2. Plastic film; 3. Base; 301. Hydraulic telescopic rod; 4. Support column; 5. Traction components; 501, long guide rail; 5011, limit slide; 502, slide; 5021, cylindrical slide; 5022, baffle; 5023, metal slide bar; 503, horizontal screw rod module; 504, stepping motor No. 1; 505, upper clamping plate; 5051, sliding sleeve; 5052, threaded hole; 5053, through groove; 5054, upper embedded groove; 5055, upper composite plate; 506, lower clamping plate; 5061, infrared signal transmitter; 5062, knife groove; 5063, lower embedded groove; 5064, lower composite plate; 507, vertical screw rod module; 508, No. 2 stepping motor; 6. Carrier board; 601, high-position board; 602, inclined board; 603, low-position board; 604, infrared signal receiving head; 7. Heat sealing and hot cutting components; 701, gantry; 702, oil cylinder; 703, power supply box; 704, heat sealing heating block; 705, electric telescopic rod; 706, hot cutting knife. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0021] Embodiment 1: See also Figure 1 - Fig.11 The invention discloses a highly efficient plastic bag manufacturing device, comprising a plastic film extruder main body 1, at the output end of which a plastic film 2 is extruded.

[0022] The plastic film 2 is extruded from the plastic film extruder body 1 and waits for the completion of drawing and heat sealing.

[0023] A base 3 is installed outside the main body 1 of the plastic film extruder.

[0024] The base 3 has a larger counterweight and better stability.

[0025] A plurality of support columns 4 are fixedly mounted on the top of the base 3 , and two traction components 5 are mounted on the top of the support columns 4 . The two traction components 5 are centrally symmetrically arranged.

[0026] Used to continuously pull the plastic film 2.

[0027] The side surface of the support column 4 is slidably connected with a carrier plate 6 .

[0028] The height of the carrier plate 6 is variable and can be used to receive the plastic bags that have been drawn, heat-sealed and cut.

[0029] Heat sealing and cutting components 7 are installed on the side and directly above the support column 4.

[0030] It is used to heat seal and cut the plastic film 2 to make it into plastic bags and separate them.

[0031] The traction assembly 5 includes a long guide rail 501 fixed to the top of the support column 4, and a slide 502 is slidably connected to the long guide rail 501. The top of the slide 502 is threadedly connected to a horizontal screw module 503. The horizontal screw module 503 forms free rotation with the long guide rail 501 through a bearing. A stepper motor No. 1 504 is fixedly installed at one end of the long guide rail 501, and the output shaft of the stepper motor No. 1 504 is transmission-connected to the horizontal screw module 503 through a coupling.

[0032] When the No. 1 stepper motor 504 is working, it will control the rotation of the horizontal screw module 503. Since the long guide rail 501 has a sliding limit on the slide 502, at this time, the slide 502 will move along the extension direction or the opposite direction of the slide 502. The rotation direction of the horizontal screw module 503 determines the movement direction of the slide 502, and the rotation speed of the No. 1 stepper motor 504 and the horizontal screw module 503 determines the movement speed of the slide 502.

[0033] An upper clamping plate 505 and a lower clamping plate 506 are slidably connected on the slide 502. The upper clamping plate 505 and the lower clamping plate 506 clamp the plastic film 2 when they are close to each other, and the upper clamping plate 505 and the lower clamping plate 506 are synchronously threadedly connected with a vertical screw module 507. The vertical screw module 507 can rotate freely with the slide 502 through bearings. A No. 2 stepper motor 508 is fixedly installed on the top of the slide 502, and the output shaft of the No. 2 stepper motor 508 is transmission-connected to the vertical screw module 507 through a coupling.

[0034] When the No. 2 stepper motor 508 is working, it will control the vertical screw module 507 to rotate. Due to the sliding limit of the slide 502 on the upper clamp plate 505 and the lower clamp plate 506, at this time, the upper clamp plate 505 and the lower clamp plate 506 will slide up and down along the slide 502, and the vertical screw module 507 determines the moving direction of the upper clamp plate 505 and the lower clamp plate 506. The rotation speed of the No. 2 stepper motor 508 and the vertical screw module 507 determines the moving speed of the upper clamp plate 505 and the lower clamp plate 506.

[0035] When the two traction components 5 are in operation, while the first traction component 5 is clamping and pulling the plastic film 2, the other traction component 5 adjusts its position at the same time. When the plastic film 2 at the first traction component 5 is heat-sealed and heat-cut and a plastic bag is formed, the other traction component 5 completes clamping the plastic film 2 and is ready to pull. In this way, the two traction components 5 can work in a cycle.

[0036] The heat sealing and hot cutting assembly 7 includes a gantry 701, which is installed on the side and directly above the base 3, and the gantry 701 is welded integrally with the base 3. A cylinder 702 is fixedly installed on the top of the gantry 701, and the two output shafts of the cylinder 702 are fixedly connected to a power supply box 703. A heat sealing heating block 704 is fixedly installed on the bottom end of the power supply box 703. An electric telescopic rod 705 is fixedly installed on the side of the power supply box 703, and a hot cutting knife 706 is fixedly installed on the bottom end of the electric telescopic rod 705. The heat sealing heating block 704 and the hot cutting knife 706 do not contact each other.

[0037] The gantry 701 can ensure that the heights of the oil cylinder 702, the power supply box 703, the heat sealing heating block 704, the electric telescopic rod 705, and the hot cutting knife 706 are all higher than the height of the plastic film 2, and the power supply box 703 provides the heat sealing heating block 704, the electric telescopic rod 705, and the hot cutting knife 706 with the required electrical energy for operation.

[0038] During the heat sealing and hot cutting operation of the plastic film 2, the oil cylinder 702 controls the power supply box 703, the heat sealing heating block 704, the electric telescopic rod 705, and the hot cutting knife 706 to descend in height. First, the heat sealing heating block 704 contacts the plastic film 2 to complete the heat sealing operation. Then, the oil cylinder 702 is raised in height, and the heat sealing heating block 704 is separated from the plastic film 2. Then, the electric telescopic rod 705 controls the hot cutting knife 706 to descend in height to complete the hot cutting operation. Then, the electric telescopic rod 705 controls the hot cutting knife 706 to return to the initial position, and the oil cylinder 702 controls the power supply box 703, the heat sealing heating block 704, the electric telescopic rod 705, and the hot cutting knife 706 to rise in height until they return to the initial position. In this way, a single heat sealing and hot cutting operation can be completed and preparations for the next heat sealing and hot cutting operation can be completed.

[0039] Embodiment 2: Based on the above embodiment 1, further description is given.

[0040] See also Figure 1 , Figure 2 Specifically, a plurality of hydraulic telescopic rods 301 are fixedly installed on the top of the base 3, and the tops of the plurality of hydraulic telescopic rods 301 are respectively fixed to corresponding positions at the bottom of the carrier plate 6; The plurality of hydraulic telescopic rods 301 are controlled by synchronous signals.

[0041] The height of the carrier plate 6 is controlled by the hydraulic telescopic rod 301. When the height of the carrier plate 6 is high, it is convenient to receive plastic bags. When the height of the carrier plate 6 is low, it is convenient to install and remove the infrared signal receiving head 604 on the carrier plate 6.

[0042] See also Figure 1 , Figure 2 , Fig.10Specifically, the carrier plate 6 includes a high plate 601, an inclined plate 602 and a low plate 603, the high plate 601, the inclined plate 602 and the low plate 603 form a broken line structure, and the three are integrally formed; The bevel plate 602 is located directly below the hot cutting knife 706 .

[0043] The heat-sealed and heat-cut plastic bags can fall onto the inclined plate 602, and then slide from the inclined plate 602 to the low-position plate 603, so as to facilitate the collection of the plastic bags.

[0044] Specifically, a plurality of infrared signal receiving heads 604 are fixedly connected to the top of the high-position plate 601 by bolts, and the plurality of infrared signal receiving heads 604 are evenly and equidistantly arranged in a straight line; Several infrared signal receiving heads 604 are independently signal controlled.

[0045] The positions of the slides 502 in the two traction components 5 are determined by an infrared signal receiving head 604, which controls the operation of two of the several infrared signal receiving heads 604. The distance between the two infrared signal receiving heads 604 is the distance between the two traction components 5, and also determines the length of the plastic bag. In this way, the required length of the plastic bag can be conveniently adjusted according to actual production needs.

[0046] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 Specifically, an infrared signal transmitter 5061 is fixedly installed at the bottom center of each lower clamping plate 506, and the infrared signal transmitter 5061 and the infrared signal receiving head 604 form a signal transmission and reception; Two infrared signal transmitters 5061 and a plurality of infrared signal transmitters 5061 are all located on the same vertical plane.

[0047] The infrared signal transmitter 5061 sends out a signal, which is received by the infrared signal receiving head 604 in working state, and the infrared signal transmitter 5061 completes signal interaction with the corresponding infrared signal receiving head 604, thereby determining that the current traction component 5 is in a suitable position, thereby facilitating the precise positioning of the traction component 5 during operation.

[0048] Specifically, three cylindrical sliders 5021 are fixedly installed at the bottom end of the slide 502, and a limited slide groove 5011 is provided on the long guide rail 501, and the three cylindrical sliders 5021 slide in the limited slide groove 5011; The cylindrical slider 5021 always keeps in contact with the inner wall of the limiting slide groove 5011; The special structural design of the limiting groove 5011 and the cylindrical slider 5021 is that the limiting groove 5011 restricts the cylindrical slider 5021 from moving in other directions except the extension direction or the opposite direction of the limiting groove 5011. At the same time, the cylindrical slider 5021 cannot be detached from the limiting groove 5011, and the three cylindrical sliders 5021 slide synchronously, which can effectively ensure the stability of the cylindrical slider 5021 when sliding.

[0049] The limiting slide groove 5011 is a groove structure that is transparent from top to bottom.

[0050] The structure is transparent from top to bottom, and the garbage that may be present in the limiting chute 5011 will fall from the bottom of the chute body. In this way, it can effectively avoid the accumulation of garbage in the limiting chute 5011, thereby avoiding interference with the sliding of the cylindrical slider 5021.

[0051] Specifically, the slide 502 is a steel structure with porous grooves; The steel structure has good stability. At the same time, the porous groove structure can reduce the weight of the slide 502, reduce the friction resistance caused by the slide 502 when sliding, and at the same time, save the cost of the device.

[0052] A blocking piece 5022 is fixedly provided at the bottom end of the slide 502 , and the blocking piece 5022 contacts the side surface of the long guide rail 501 .

[0053] When the slide 502 slides along the upper surface of the long guide rail 501 , the blocking piece 5022 slides along the side of the long guide rail 501 , which can further enhance the stability of the slide 502 when sliding.

[0054] Specifically, four metal slide bars 5023 are fixed to the side of the slide 502, and four through holes are opened at one end of the upper clamping plate 505 and the lower clamping plate 506, and a sliding sleeve 5051 is fixed inside each through hole. The sliding sleeve 5051 is sleeved on the side of the metal slide bar 5023, and the sliding sleeve 5051 slides freely along the metal slide bar 5023; The four metal slide bars 5023 limit the sliding direction of the upper clamping plate 505 and the lower clamping plate 506, thereby preventing the upper clamping plate 505 and the lower clamping plate 506 from tilting when sliding, and ensuring the stability of the upper clamping plate 505 and the lower clamping plate 506 when sliding.

[0055] A threaded hole 5052 is provided in the middle of one end of the upper clamping plate 505 and the lower clamping plate 506, and the upper clamping plate 505 and the lower clamping plate 506 are respectively threadedly connected to the vertical screw module 507 through the corresponding threaded holes 5052; The threaded holes 5052 on the upper clamping plate 505 and the threaded holes 5052 on the lower clamping plate 506 have the same pitch and opposite spiral directions.

[0056] By controlling the specifications of the two threaded holes 5052 , when the vertical screw rod module 507 rotates, the upper clamping plate 505 and the lower clamping plate 506 can be ensured to move in opposite directions, thereby achieving synchronous closing, clamping or synchronous separation of the upper clamping plate 505 and the lower clamping plate 506 .

[0057] Specifically, a through groove 5053 is formed on the upper clamping plate 505 . The through groove 5053 penetrates the upper and lower surfaces of the upper clamping plate 505 , and the length of the through groove 5053 is greater than the width of the plastic film 2 .

[0058] The plastic film 2 is clamped between the upper clamping plate 505 and the lower clamping plate 506 , and both the heat sealing heating block 704 and the heat cutting knife 706 can pass through the through slot 5053 and operate on the plastic film 2 .

[0059] An upper embedding groove 5054 is formed on the lower end surface of the upper clamping plate 505 , and an upper composite plate 5055 is fixedly installed inside the upper embedding groove 5054 .

[0060] Specifically, a knife groove 5062 is formed on the upper end surface of the lower clamping plate 506 , and the width of the knife groove 5062 is greater than the width of the hot cutting knife 706 .

[0061] When the hot cutting knife 706 falls and hot cuts the plastic film 2, the design of the knife groove 5062 allows the blade of the hot cutting knife 706 to fall below the knife groove 5062, thus effectively ensuring that the plastic film 2 is completely cut; A lower embedding groove 5063 is formed on the lower end surface of the lower clamping plate 506 , and a lower composite plate 5064 is fixedly installed inside the lower embedding groove 5063 . The lower composite plate 5064 has the same structure as the upper composite plate 5055 , and the two are symmetrically arranged.

[0062] The upper composite plate 5055 and the lower composite plate 5064 are both made of high friction materials. When the upper clamping plate 505 and the lower clamping plate 506 clamp the plastic film 2, the upper composite plate 5055 and the lower composite plate 5064 are in contact with the plastic film 2, increasing the friction between the two and the plastic film 2, preventing the plastic film 2 from moving during traction, heat sealing and hot cutting, thereby ensuring the quality of the plastic bag formed by the plastic film 2 after heat sealing and hot cutting.

[0063] Working principle: The hydraulic telescopic rod 301, the first stepping motor 504, the infrared signal transmitter 5061, the second stepping motor 508, the infrared signal receiving head 604, the oil cylinder 702, the power supply box 703, the heat sealing heating block 704, the electric telescopic rod 705, and the hot cutting knife 706 are all controlled by signals.

[0064] The two traction assemblies 5 are respectively marked as a first traction assembly 5 and a second traction assembly 5 .

[0065] During operation, the plastic film 2 is extruded from the plastic film extruder body 1. At this time, the upper clamping plate 505 and the lower clamping plate 506 of the No. 1 traction component 5 clamp the plastic film 2, and the upper clamping plate 505 and the lower clamping plate 506 of the No. 2 traction component 5 are in an open state.

[0066] At this time, the infrared signal receiving head 604 farthest from the plastic film extruder body 1 is marked as the far-end infrared signal receiving head 604 and is in an open state. According to the required length of the plastic bag, another infrared signal receiving head 604 is selected, marked as the near-end infrared signal receiving head 604, and opened.

[0067] Then, the No. 1 stepper motor 504 on the No. 1 traction component 5 starts to work, controls the horizontal rotation of the screw module 503, and then controls the slide 502 to move along the long guide rail 501 away from one end of the plastic film extruder body 1, until the bottom of the slide 502 and the infrared signal transmitter 5061 are received by the remote infrared signal receiving head 604, at which time the slide 502 stops moving. At this time, the hot cutting knife 706 and the heat sealing heating block 704 are directly above the No. 1 traction component 5.

[0068] At the same time, the No. 2 stepper motor 508 on the No. 2 traction component 5 works, controls the infrared signal transmitter 5061 on the No. 2 traction component 5 to be received by the near-end infrared signal receiving head 604, and then controls the upper clamping plate 505 and the lower clamping plate 506 on the No. 2 traction component 5 to clamp the plastic film 2.

[0069] Then the traction, heat sealing, hot cutting and separation work begins, specifically: the No. 1 stepper motor 504 on the No. 2 traction component 5 works, so that the No. 2 traction component 5 approaches the No. 1 traction component 5 and completes the traction of the plastic film. At the same time, the oil cylinder 702 controls the power supply box 703, the heat sealing heating block 704, the electric telescopic rod 705, and the hot cutting knife 706 to descend in height, so that the heat sealing heating block 704 contacts the plastic film 2 to complete the heat sealing operation. Then, the oil cylinder 702 is raised in height, and the heat sealing heating block 704 is separated from the plastic film 2. Then, the electric telescopic rod 705 controls the hot cutting knife 706 to descend in height to complete the hot cutting operation. Then, the electric telescopic rod 705 controls the hot cutting knife 706 to return to the initial position, and the oil cylinder 702 controls the power supply box 703, the heat sealing heating block 704, the electric telescopic rod 705, and the hot cutting knife 706 to rise in height until they return to the initial position to complete the separation of the plastic film.

[0070] When the No. 2 traction component 5 is very close to the No. 1 traction component 5, the upper clamping plate 505 and the lower clamping plate 506 on the No. 1 traction component 5 are opened, and the plastic film 2 that has been heat-sealed, heat-cut and separated becomes a plastic bag and falls onto the inclined panel 602. At the same time, the No. 1 traction component 5 is controlled to pass through the upper and lower parts of the No. 2 traction component 5, and the position of the proximal infrared signal receiving head 604 is moved, and the infrared signal transmitter 5061 on the No. 2 traction component 5 is received by the far-end infrared signal receiving head 604.

[0071] After that, the No. 1 traction component 5 and the No. 2 traction component 5 exchange the working process to complete the traction, heat sealing, hot cutting and separation work, and there is no scrap of plastic film 2 in the whole process, which greatly improves the conversion rate of plastic film 2 to plastic bags and improves the production efficiency of plastic bags.

[0072] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A highly efficient plastic bag manufacturing device, comprising a plastic film extruder main body (1), wherein a plastic film (2) is extruded from the output end of the plastic film extruder main body (1), and a base (3) is installed outside the plastic film extruder main body (1), characterized in that: A plurality of support columns (4) are fixedly mounted on the top of the base (3), two traction assemblies (5) are mounted on the top of the support columns (4), and the two traction assemblies (5) are arranged symmetrically with respect to the center; The side of the support column (4) is slidably connected to a carrier plate (6), the side of the support column (4) and the top thereof are provided with a heat sealing and hot cutting assembly (7), the traction assembly (5) comprises a long guide rail (501) fixed to the top of the support column (4), the long guide rail (501) is slidably connected to a slide frame (502), the top of the slide frame (502) is threadedly connected to a horizontal screw rod module (503), the horizontal screw rod module (503) is freely rotatable through a bearing and the long guide rail (501), a No. 1 stepping motor (504) is fixedly installed at one end of the long guide rail (501), the output shaft of the No. 1 stepping motor (504) is connected to the horizontal guide rail (501) through a coupling. The upper clamping plate (505) and the lower clamping plate (506) are slidably connected to the slide (502), and the upper clamping plate (505) and the lower clamping plate (506) clamp the plastic film (2) when they are close to each other, and the upper clamping plate (505) and the lower clamping plate (506) are synchronously threadedly connected to a vertical screw rod module (507), and the vertical screw rod module (507) is freely rotatable with the slide (502) through a bearing, and a No. 2 stepping motor (508) is fixedly installed on the top of the slide (502), and the output shaft of the No. 2 stepping motor (508) is transmission-connected to the vertical screw rod module (507) through a coupling; The heat sealing and hot cutting assembly (7) comprises a gantry (701), the gantry (701) being mounted on the side and directly above the base (3), and the gantry (701) and the base (3) being welded together as one piece, an oil cylinder (702) being fixedly mounted on the top of the gantry (701), two output shafts of the oil cylinder (702) being fixedly connected to a power supply box (703), a heat sealing heating block (704) being fixedly mounted on the bottom end of the power supply box (703), an electric telescopic rod (705) being fixedly mounted on the side of the power supply box (703), a hot cutting knife (706) being fixedly mounted on the bottom end of the electric telescopic rod (705), and the heat sealing heating block (704) and the hot cutting knife (706) not being in contact with each other.

2. The high-efficiency plastic bag manufacturing device according to claim 1 is characterized in that: A plurality of hydraulic telescopic rods (301) are fixedly mounted on the top of the base (3), and the tops of the plurality of hydraulic telescopic rods (301) are respectively fixed to corresponding positions of the bottom of the carrier plate (6); The plurality of hydraulic telescopic rods (301) are controlled by synchronous signals.

3. The high-efficiency plastic bag manufacturing device according to claim 1 is characterized in that: The carrier plate (6) comprises a high-position plate (601), an inclined plate (602) and a low-position plate (603), wherein the high-position plate (601), the inclined plate (602) and the low-position plate (603) form a broken-line structure, and the three are integrally formed; The inclined plate (602) is located directly below the hot cutting knife (706).

4. The high-efficiency plastic bag manufacturing device according to claim 3 is characterized in that: A plurality of infrared signal receiving heads (604) are fixedly connected to the top of the high-position plate (601) by means of bolts, and the plurality of infrared signal receiving heads (604) are arranged in a straight line at uniform and equidistant intervals; A plurality of infrared signal receiving heads (604) are independently signal controlled.

5. The high-efficiency plastic bag manufacturing device according to claim 4 is characterized in that: An infrared signal transmitter (5061) is fixedly mounted at the center of the bottom end of each lower clamping plate (506), and the infrared signal transmitter (5061) and the infrared signal receiving head (604) form signal transmission and reception; The two infrared signal transmitters (5061) and a plurality of infrared signal transmitters (5061) are all located on the same vertical plane.

6. The high-efficiency plastic bag manufacturing device according to claim 1, characterized in that: Three cylindrical sliders (5021) are fixedly mounted on the bottom end of the slide frame (502), and a limiting slide groove (5011) is provided on the long guide rail (501), and the three cylindrical sliders (5021) slide in the limiting slide groove (5011); The cylindrical slider (5021) always keeps in contact with the inner wall of the limiting slide groove (5011); The limiting sliding groove (5011) is a groove structure that is transparent from top to bottom.

7. The high-efficiency plastic bag manufacturing device according to claim 1 is characterized in that: The slide frame (502) is a steel structure with porous grooves; A blocking piece (5022) is fixedly provided at the bottom end of the slide (502), and the blocking piece (5022) contacts the side surface of the long guide rail (501).

8. The high-efficiency plastic bag manufacturing device according to claim 1, characterized in that: Four metal slide bars (5023) are fixed on the side of the slide frame (502); four through holes are opened at one end of the upper clamping plate (505) and the lower clamping plate (506); a sliding sleeve (5051) is fixed inside each through hole; the sliding sleeve (5051) is sleeved on the side of the metal slide bar (5023), and the sliding sleeve (5051) slides freely along the metal slide bar (5023); A threaded hole (5052) is provided in the middle of one end of the upper clamping plate (505) and the lower clamping plate (506), and the upper clamping plate (505) and the lower clamping plate (506) are respectively threadedly connected to the vertical screw rod module (507) through the corresponding threaded holes (5052); The threaded holes (5052) on the upper clamping plate (505) and the threaded holes (5052) on the lower clamping plate (506) have equal pitches and opposite spiral directions.

9. The high-efficiency plastic bag manufacturing device according to claim 1, characterized in that: The upper clamping plate (505) is provided with a through groove (5053), the through groove (5053) penetrates the upper and lower surfaces of the upper clamping plate (505), and the length of the through groove (5053) is greater than the width of the plastic film (2); An upper embedding groove (5054) is provided on the lower end surface of the upper clamping plate (505), and an upper composite plate (5055) is fixedly installed inside the upper embedding groove (5054).

10. The high-efficiency plastic bag manufacturing device according to claim 9, characterized in that: The upper end surface of the lower clamping plate (506) is provided with a knife groove (5062), and the width of the knife groove (5062) is greater than the width of the hot cutting knife (706); A lower embedding groove (5063) is provided on the lower end surface of the lower clamping plate (506), and a lower composite plate (5064) is fixedly installed inside the lower embedding groove (5063). The lower composite plate (5064) has the same structure as the upper composite plate (5055), and the two are symmetrically arranged.

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