Reciprocating type three-dimensional packaging machine

Abstract

The utility model belongs to the field of packaging machines, and provides a reciprocating type three-dimensional packaging machine which comprises a rack, a material conveying belt, a film conveying roller, a turnover assembly, a driving assembly, a clamping assembly and a material ejecting head. Wherein the folding assembly comprises a table plate and a film guide sheet, and further comprises a first film folding knife, a second film folding knife, a third film folding knife, a fourth film folding knife and a guide plate; the driving assembly is in transmission connection with the first film folding knife, the second film folding knife, the third film folding knife and the fourth film folding knife. The clamping assembly comprises a two-dimensional servo sliding table and a movable base connected to the output end of the two-dimensional servo sliding table, and further comprises a plurality of fixed clamps and a movable clamp opposite to the fixed clamp close to the film conveying roller at intervals. The material ejecting head is movably installed on the machine frame and can ascend and descend in the height direction of the machine frame, the ascending and descending path of the material ejecting head intersects with the feeding path of the material conveying belt, and an interval for target materials to penetrate through is formed in the film guiding piece.

Description

Technical Field

[0001] This application belongs to the field of packaging machines, and particularly relates to a reciprocating three-dimensional packaging machine. Background Art

[0002] Three-dimensional packaging machines, as a kind of packaging equipment widely used in fields such as cosmetics, pharmaceuticals, and food, its core function is to wrap products in three-dimensional transparent films to form hexahedron folding packages. However, due to poor structural design, traditional three-dimensional packaging machines lack effective connection between their packaging steps, resulting in a relatively slow overall packaging speed and being difficult to meet the requirements of high-speed production. Therefore, it is necessary to solve the above technical problems. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a reciprocating three-dimensional packaging machine to solve the technical problem of low packaging efficiency of the existing three-dimensional packaging machines.

[0004] To achieve the above purpose, the technical solution adopted in this application is: to provide a reciprocating three-dimensional packaging machine, including:

[0005] A frame;

[0006] A material conveyor belt, installed on the frame and used for conveying target materials;

[0007] A film conveying roller, installed above the material conveyor belt along the height direction of the frame and used for conveying the target packaging film in a direction perpendicular to the material conveyor belt, and a cutter for cutting the target packaging film is provided on the output side of the film conveying roller;

[0008] A folding component, including a table board located in the feeding plane of the film conveying roller and a film guiding piece connected between the film conveying roller and the table board. One side of the film guiding piece close to the table board is bent and extends below the table board. The folding component further includes a first film folding knife and second, third, fourth film folding knives and guide plates respectively arranged at intervals on both sides of the conveying path of the target packaging film. The second and third film folding knives are located between the fourth film folding knife and the guide plate and are spaced relatively along the height direction of the frame;

[0009] A driving component, respectively drivingly connected to the first film folding knife, the second film folding knife, the third film folding knife, and the fourth film folding knife and used for driving the first film folding knife to move between the film conveying roller and the table board and driving the second, third, and fourth film folding knives to flip. The rotation axes of the second and third film folding knives are respectively horizontally arranged and are both perpendicular to the rotation axis of the fourth film folding knife;

[0010] The clamping assembly includes a two-dimensional servo slide table movably mounted on the frame and capable of reciprocating along the feeding direction of the film conveying roller, and a moving seat connected to the output end of the two-dimensional servo slide table. It further includes a plurality of fixed clamps spaced along the feeding direction of the film conveying roller and mounted on the moving seat, and a moving clamp spaced opposite to one of the fixed clamps close to the film conveying roller. The two-dimensional servo slide table is used to drive the moving seat to lift along the height direction of the frame and approach or move away from the platen. The moving clamp is used to approach or move away from the fixed clamp along the feeding direction of the film conveying roller;

[0011] The material pushing head is movably mounted on the frame and capable of lifting along the height direction of the frame. The lifting path of the material pushing head intersects with the feeding path of the material conveyor belt, and an interval for the target material to pass through is formed on the film guiding piece.

[0012] Optionally, the clamping assembly includes a cylinder mounted on the moving seat and a first tension spring with one end connected to the moving seat;

[0013] The middle part of the moving clamp is hinged to the moving seat, and the rotation center axis of the moving clamp relative to the moving seat is parallel to the platen. The end of the moving clamp away from the platen is connected to the output end of the cylinder and can be driven by the cylinder to rotate relative to the moving seat. The end of the first tension spring away from the moving seat is connected to the side of the moving clamp close to the cylinder and can make the moving clamp automatically reset.

[0014] Optionally, the clamping assembly further includes a plurality of material blocking rods connected to the moving seat and arranged corresponding to the number of the fixed clamps away from the film conveying roller;

[0015] The material blocking rods are arranged between adjacent fixed clamps and distributed along the feeding direction of the film conveying roller. The distance between the material blocking rods and the fixed clamps is adapted to the width of the target material in the feeding direction of the film conveying roller.

[0016] Optionally, the driving assembly includes a rotating shaft horizontally mounted on the frame and an elbow arm with one end hinged to the rotating shaft and capable of rotating relative to the rotating shaft. The end of the elbow arm away from the rotating shaft is connected to the first film folding knife;

[0017] The driving assembly further includes a pull rod hinged to the middle of the elbow arm and used to drive the elbow arm to rotate relative to the rotating shaft.

[0018] Optionally, the driving assembly further includes a first lifting shaft capable of lifting in the height direction of the rack, a first support connected to the first lifting shaft, a turning shaft rotatably mounted on the first support, a follower arm sleeved on the turning shaft, a pulling arm sleeved on the turning shaft, and a second pulling spring connected between the pulling arm and the first support and capable of automatically resetting the pulling arm. The second film folding knife is connected to the turning shaft.

[0019] The driving assembly further includes a cam plate connected to the rack. A roller adapted to the cam plate is installed at one end of the follower arm away from the turning shaft. The roller is used to drive the second film folding knife to flip during the process of rolling relative to the cam plate.

[0020] Optionally, the driving assembly further includes a second lifting shaft capable of lifting in the height direction of the rack, a lifting seat connected to the second lifting shaft, a third main lifting shaft connected to the lifting seat, a third auxiliary lifting shaft connected to the rack and capable of lifting relative to the lifting seat in the height direction of the rack, a second support connected to the third main lifting shaft, a pin shaft horizontally connected to the second support, a swinging seat hinged at one end to the pin shaft, and a third pulling spring connected between the swinging seat and the second support and capable of automatically resetting the swinging seat. The third film folding knife is connected to the swinging seat.

[0021] The driving assembly further includes a pushing head connected to the third auxiliary lifting shaft and a pushing wheel abutted against the pushing head. One end of the swinging seat away from the pin shaft is connected to the pushing wheel and can make the third film folding knife flip during the lifting process of the third auxiliary lifting shaft.

[0022] Optionally, the driving assembly further includes a fourth lifting shaft and a rotating arm connected to the fourth lifting shaft. The fourth lifting shaft is rotatably mounted on the lifting seat and can drive the rotation around its own central axis relative to the lifting seat through the rotating arm. The fourth film folding knife is connected to the fourth lifting shaft.

[0023] The driving assembly further includes a motor installed on the rack and a crank, a connecting rod and a spherical plain bearing connected between the motor and the rotating arm. The motor drives the rotating arm to rotate the fourth lifting shaft through the crank, the connecting rod and the spherical plain bearing.

[0024] Optionally, the folding assembly further includes a wire rail vertically connected to the frame, a film pressing sliding seat slidably connected to the wire rail, a film pressing rod passing through the film pressing sliding seat and slidably connected to the film pressing sliding seat, and a retaining ring formed on the film pressing rod and spaced from the film pressing sliding seat; the folding assembly further includes a film pressing foot connected to the film pressing rod and a return spring connected between the retaining ring and the film pressing sliding seat and capable of automatically resetting the film pressing rod;

[0025] The film pressing rod is parallel to the wire rail, and the film pressing foot faces the blanking head and is distributed on opposite sides of the guide film with respect to the blanking head.

[0026] Optionally, the reciprocating three-dimensional packaging machine further includes a heat-sealing plate movably installed on the output side of the second film folding knife along the feeding direction of the film conveying roller, and the platen and the guide plate are provided with openings for the heat-sealing plate to penetrate and approach the target material.

[0027] Optionally, a baffle for blocking the target material is provided on the feeding path of the material conveyor belt.

[0028] The beneficial effects of the reciprocating three-dimensional packaging machine provided by the present application are as follows: Compared with the prior art, in the reciprocating three-dimensional packaging machine provided by the present application, since the feeding path of the material conveyor belt is perpendicular to the feeding direction of the film conveying roller and the lifting path of the ejector head intersects with the feeding path of the material conveyor belt, and since the material conveyor belt is lower than the film conveying roller in the height direction of the machine frame, when the ejector head rises relative to the machine frame, the target material on the feeding conveyor belt can be lifted to pass through the intervals on the film guiding sheet, so that the target packaging film can naturally lap on the top surface of the target material, and at this time, both ends of the target packaging film droop naturally; Since the first film folding knife can move between the film conveying roller and the table board, when the target material rises above the table board, the driving assembly can be used to drive the first film folding knife to move towards the table board, so that the part of the target packaging film that droops naturally on the side close to the film conveying roller beyond the top surface of the target material can be folded to the bottom surface of the target material. The two-dimensional servo sliding table can drive the moving seat to move to a position adapted to the target material, and the moving clamp approaching the fixed clamp can complete the clamping of the target material. During the process of the moving seat moving away from the film conveying roller along the feeding direction of the film conveying roller, the table board can just fold the part of the target packaging film that droops naturally on the side close to the table board beyond the top surface of the target material to the bottom surface of the target material, thus completing the circumferential packaging of the target material. As the moving seat continues to move away from the film conveying roller, the circumferentially packaged target material reaches the positions of the fourth film folding knife, the second film folding knife and the third film folding knife. Since both the second film folding knife and the third film folding knife can be horizontally flipped and the fourth film folding knife can be vertically flipped, the part of the target packaging film that exceeds the top surface of the target material and is close to the second film folding knife, the third film folding knife and the fourth film folding knife can be folded to the side surface of the target material. When the target material finally passes through the guide plate, the guide plate can fold the last unfolded part of the target packaging film to the side surface of the target material. Finally, heat sealing is performed on the lapping position at the heat sealing plate position, thus completing the three-dimensional packaging of the target material. Since a plurality of fixed clamps are arranged at intervals along the feeding direction of the film conveying roller on the moving seat, and since the moving seat can be lifted in the height direction of the machine frame and reciprocally run along the feeding direction of the film conveying roller under the drive of the two-dimensional servo sliding table, the moving seat can continuously clamp and convey the target material with the top surface already wrapped by reciprocally lifting and reciprocally moving along the feeding direction of the film conveying roller. And each time the moving seat moves away from the film conveying roller, the target material can advance one station. In this way, the reciprocating three-dimensional packaging machine provided in this embodiment can automatically and efficiently complete the three-dimensional packaging and conveying of the target material, far superior to the prior art. Description of the Drawings

[0029] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 Schematic diagram of the overall structure of the reciprocating three-dimensional packaging machine provided by the embodiment of the present application Figure 1 ;

[0031] Figure 2 Schematic diagram of the overall structure of the reciprocating three-dimensional packaging machine provided by the embodiment of the present application Figure 2 ;

[0032] Figure 3 Schematic diagram of the overall structure of the reciprocating three-dimensional packaging machine provided by the embodiment of the present application Figure 3 ;

[0033] Figure 4 Schematic diagram of the overall structure of the reciprocating three-dimensional packaging machine provided by the embodiment of the present application Figure 4 ;

[0034] Figure 5 Schematic diagram of the partial structure of the reciprocating three-dimensional packaging machine provided by the embodiment of the present application Figure 1 ;

[0035] Figure 6 Schematic diagram of the partial structure of the reciprocating three-dimensional packaging machine provided by the embodiment of the present application Figure 2 ;

[0036] Figure 7 is Figure 3 Local enlarged view at position A in

[0037] Figure 8 Schematic diagram of the packaging process of the target material in the embodiment of the present application.

[0038] Among them, the reference numerals in the figures: 100, frame; 101, cutting knife; 200, material conveyor belt; 300, film conveying roller; 401, table board; 402, film guiding piece; 403, first film folding knife; 404, second film folding knife; 405, third film folding knife; 406, fourth film folding knife; 407, guide plate; 408, linear guide; 409, film pressing sliding seat; 410, film pressing rod; 411, film pressing foot; 412, retaining ring; 413, return spring; 501, two-dimensional servo sliding table; 502, moving seat; 503, fixed clamp; 504, movable clamp; 505, cylinder; 506, first tension spring; 507, material blocking rod; 600, ejector head; 701, rotating shaft; 702, bent arm; 703, pull rod; 704, first lifting shaft; 705, first support; 706, turning shaft; 707, follower arm; 708, pulling arm; 709, second tension spring; 710, cam plate; 711, roller; 712, second lifting shaft; 713, lifting seat; 714, third main lifting shaft; 715, third auxiliary lifting shaft; 716, second support; 717, pin shaft; 718, swinging seat; 719, third tension spring; 720, pushing head; 721, pushing wheel; 722, fourth lifting shaft; 723, rotating arm; 724, motor; 725, crank; 726, connecting rod; 727, spherical plain bearing; 800, heat sealing plate; 900, baffle; 1001, target material; 1002, target packaging film. Detailed implementation manners

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0041] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0043] Please refer to Figures 1 to 8 , and a reciprocating three-dimensional packaging machine provided by an embodiment of this application will now be described. This reciprocating three-dimensional packaging machine includes a frame 100, a material conveyor belt 200, a film conveying roller 300, a folding assembly, a driving assembly, a clamping assembly, and a pusher head 600. Among them:

[0044] The material conveyor belt 200 is installed on the frame 100 and is used to convey the target material 1001; the film conveying roller 300 is installed above the material conveyor belt 200 along the height direction of the frame 100 and is used to convey the target packaging film 1002 in a direction perpendicular to the material conveyor belt 200, and a cutter 101 for cutting the target packaging film 1002 is arranged on the output side of the film conveying roller 300; the folding component includes a platen 401 located in the feeding plane of the film conveying roller 300 and a film guide sheet 402 connected between the film conveying roller 300 and the platen 401, and the film guide sheet 402 is close to the platen 401. One side is bent and extends under the table 401, and the folding assembly also includes a first film folding knife 403 and a second film folding knife 404, a third film folding knife 405, a fourth film folding knife 406 and a guide plate 407 which are respectively arranged at intervals on both sides of the conveying path of the target packaging film 1002, and the second film folding knife 404 and the third film folding knife 405 are located between the fourth film folding knife 406 and the guide plate 407 and are spaced opposite to each other along the height direction of the frame 100; the driving assembly is respectively connected to the first film folding knife 403, the second film folding knife 404, the third film folding knife 405 and the fourth film folding knife 406 and is used to drive the first film folding knife 403 The second film folding knife 404, the third film folding knife 405 and the fourth film folding knife 406 are moved and driven to flip between the film conveying roller 300 and the table 401. The flip axes 706 of the second film folding knife 404 and the third film folding knife 405 are respectively arranged horizontally and perpendicular to the flip axis 706 of the fourth film folding knife 406; the clamping assembly includes a two-dimensional servo slide 501 movably mounted on the frame 100 and capable of reciprocating along the feeding direction of the film conveying roller 300, and a moving seat 502 connected to the output end of the two-dimensional servo slide 501, and also includes a moving seat 502 installed at intervals on the moving seat 502 along the feeding direction of the film conveying roller 300. The two-dimensional servo slide 501 is used to drive the movable seat 502 to rise and fall along the height direction of the frame 100 and approach or move away from the platen 401, and the movable clamp 504 is used to approach or move away from the fixed clamp 503 along the feeding direction of the film conveying roller 300; the ejector head 600 is movably mounted on the frame 100 and can be lifted and lowered along the height direction of the frame 100, and the lifting path of the ejector head 600 intersects with the feeding path of the material conveying belt 200, and a gap is formed on the film guide sheet 402 for the target material 1001 to pass through. In addition, it can be understood that the cutter 101 is used to cooperate with the film conveying roller 300 to cut the target packaging film 1002 into a predetermined length size, and the drive device and structure of the cutter 101 can adopt the existing technology, which will not be repeated here.

[0045] According to the above structure provided in this embodiment, in the reciprocating three-dimensional packaging machine provided in the embodiment, since the feeding path of the material conveyor belt 200 is perpendicular to the feeding direction of the film conveying roller 300 and the lifting path of the material pushing head 600 intersects with the feeding path of the material conveyor belt 200, and since the material conveyor belt 200 is lower than the film conveying roller 300 in the height direction of the frame 100, when the material pushing head 600 rises relative to the frame 100, the target material 1001 on the feeding conveyor belt can be pushed up to pass through the interval on the film guiding piece 402, so that the target packaging film 1002 can naturally overlap on the top surface of the target material 1001. At this time, both ends of the target packaging film 1002 naturally droop (see Figure 8 , and drooping edges B and C are respectively formed); since the first film folding knife 403 can move between the film conveying roller 300 and the table board 401, when the target material 1001 rises (when the material pushing head 600 pushes the target material 1001 to a set height, the moving clamp 504 and the fixed clamp 503 also reach above the target material 1001 and descend to clamp and lift the target material 1001), after rising above the table board 401, the driving assembly can be used to drive the first film folding knife 403 to move towards the table board 401, so that the part of the target packaging film 1002 that naturally droops on the side close to the film conveying roller 300 beyond the top surface of the target material 1001 (such as the drooping edge B shown in Figure 8 ) can be folded to the bottom surface of the target material 1001, forming a folded edge b as shown in Figure 8 to wrap a part of the bottom surface of the target material 1001. The two-dimensional servo slide table 501 can drive the moving seat 502 to move to a position adapted to the target material 1001, that is, the two-dimensional servo slide table 501 first drives the moving seat 502 to move above the target material and then descends, and then the moving clamp 504 approaches the fixed clamp 503 to complete the clamping of the target material 1001. During the process of the moving seat 502 moving away from the film conveying roller 300 along the feeding direction of the film conveying roller 300, the front edge of the table board 401 can just fold the part of the target packaging film 1002 that naturally droops on the side close to the table board 401 beyond the top surface of the target material 1001 (such as the drooping edge C shown in Figure 8 ) to the bottom surface of the target material 1001, forming a folded edge as shown in Figure 8The hem c shown in the figure, and the hem c covers the outer surface of the hem b and at least a part of the overlapping surface of the two, thus completing the circumferential packaging of the target material 1001. As the moving seat 502 continuously moves away from the film conveying roller 300, the circumferentially packaged target material 1001 reaches the positions of the fourth film folding knife 406, the second film folding knife 404, and the third film folding knife 405. Since both the second film folding knife 404 and the third film folding knife 405 can be horizontally flipped and the fourth film folding knife 406 can be vertically flipped, the part of the target packaging film 1002 that exceeds the top surface of the target material 1001 and is close to the second film folding knife 404, the third film folding knife 405, and the fourth film folding knife 406 can be folded onto the side surface of the target material 1001. Specifically, first, the second film folding knife 404 is flipped from the initial position of spreading outwards to a vertical state, and the part of the target packaging film 1002 on both sides of the top surface of the target material 1001 in a horizontal state is folded downwards to form a hem D. Then, the third film folding knife 405 and the fourth film folding knife 406 rise to the set position, and the third film folding knife 405 is flipped from spreading outwards to a vertical state, and the part of the target packaging film 1002 on both sides of the bottom surface of the target material 1001 in a horizontal state is folded upwards to form a hem E that will overlap on the hem D. At this time, the second film folding knife 404 is flipped upwards and reset from the outside. Then, the fourth film folding knife 406 is flipped to be parallel to the side surface of the target material 1001, and the folded ear F formed by the target packaging film 1002 is folded onto the hem E and the hem D to press the two. Then, the third film folding knife 405 and the fourth film folding knife 406 descend to the set position, so that the third film folding knife 405 is separated from the traveling path of the target material 1001. Synchronously, the target material 1001 at this position is clamped between the corresponding set of fixed clamps 503 and the material blocking rod 507 and travels along the platen 401. At this time, at least a part of the top of the fourth film folding knife 406 is still pressing on the folded ear F to prevent the folded ear F, the hem E, and the hem D from rebounding (when the folded ear G is folded by the guide plate 407 to press the folded ear F, the hem E, and the hem D, the fourth film folding knife 406 descends to the reset position, as described later). Here, since there is a distance between two adjacent sets of fixed clamps 503 and the material blocking rod 507, before the subsequent target material 1001 reaches the positions of the fourth film folding knife 406, the second film folding knife 404, and the third film folding knife 405, the current target material 1001 has completely left the positions of the fourth film folding knife 406, the second film folding knife 404, and the third film folding knife 405. At the same time, the third film folding knife 405 and the fourth film folding knife 406 descend to the reset position, and the fourth film folding knife 406 also leaves the traveling path of the target material 1001 to avoid interfering with the subsequent target material 1001; when the target material 1001 finally passes through the guide plate 407, the guide plate 407 can also fold the last unfolded part of the target packaging film 1002 (such as Figure 8The folded ear G) shown is folded onto the side of the target material 1001, pressing against the folded ear F, the folded edge E, and the folded edge D, and finally heat-sealing the overlapping position at the position of the heat-sealing plate 800, thus completing the three-dimensional packaging of the target material 1001. It can be understood here that the upper edge of the fourth film folding knife 406 is higher than the upper edge of the third film folding knife 405. Since a number of fixed clamps 503 are arranged at intervals on the upper edge of the moving seat 502 in the feeding direction of the film conveying roller 300, and since the moving seat 502 can be lifted and lowered along the height direction of the frame 100 driven by the two-dimensional servo slide 501, the moving seat 502 can continuously clamp and convey the target material 1001 with its top surface already wrapped by reciprocating lifting and reciprocating movement along the feeding direction of the film conveying roller 300. Moreover, each time the moving seat 502 moves away from the film conveying roller 300, the target material 1001 can be advanced by one station. In this way, the reciprocating three-dimensional packaging machine provided in this embodiment can automatically and efficiently complete the three-dimensional packaging and conveying of the target material 1001, far superior to the prior art.

[0046] It can be understood that since the position where the target material 1001 passes through the film guiding piece 402 is fixed in this embodiment, only one moving clamp 504 can be provided and corresponds to one of the fixed clamps 503 closest to the film conveying roller 300. Additionally, it should be noted that in order to prevent the fixed clamp 503 and the moving clamp 504 from touching the target material 1001 during the retraction process, the two-dimensional servo slide 501 needs to raise the moving seat 502 to a certain height so that the moving clamp 504 and the fixed clamp 503 are withdrawn from the conveying path of the target material 1001.

[0047] In another embodiment of the present application, please refer to Figures 1 to 8 , the clamping assembly includes a cylinder 505 installed on the moving seat 502 and a first tension spring 506 with one end connected to the moving seat 502; the middle of the moving clamp 504 is hinged to the moving seat 502 and the rotation center axis of the moving clamp 504 relative to the moving seat 502 is parallel to the table board 401. The end of the moving clamp 504 far from the table board 401 is connected to the output end of the cylinder 505 and can be driven by the cylinder 505 to rotate relative to the moving seat 502. The end of the first tension spring 506 far from the moving seat 502 is connected to the side of the moving clamp 504 close to the cylinder 505 and can make the moving clamp 504 automatically reset.

[0048] According to the above structure provided in this embodiment, after the piston rod of the air cylinder 505 extends, the movable clamp 504 can rotate relative to the moving seat 502 and the end of the movable clamp 504 away from the air cylinder 505 can approach the fixed clamp 503 to clamp the target material 1001. The first tension spring 506 arranged between the movable clamp 504 and the moving seat 502 can make the movable clamp 504 tend to automatically reset. In this way, in this embodiment, the movable clamp 504 can not only clamp the target material 1001 through the air cylinder 505 in cooperation with the fixed clamp 503, but also help reduce the power consumption of the air cylinder 505 and is beneficial to further improving the packaging efficiency of the reciprocating three-dimensional packaging machine in this embodiment.

[0049] In another embodiment of the present application, please refer to Figures 1 to 8 together. The clamping assembly further includes a plurality of baffle rods 507 connected to the moving seat 502 and arranged corresponding to the number of fixed clamps 503 away from the film conveying roller 300; the baffle rods 507 are arranged between adjacent fixed clamps 503 and are distributed along the feeding direction of the film conveying roller 300. The distance between the baffle rods 507 and the fixed clamps 503 is adapted to the width of the target material 1001 in the feeding direction of the film conveying roller 300. It can be understood that in order to have an interval between the target materials 1001, a set distance is provided between two adjacent groups of baffle rods 507 and the fixed clamps 503.

[0050] According to the above structure provided in this embodiment, a distance adapted to the width of the target material 1001 can be formed between a group of baffle rods 507 and the fixed clamp 503 to facilitate clamping the corresponding target material 1001, and a set distance between two adjacent groups of baffle rods 507 and the fixed clamps 503 can make an interval with a preset distance between the target materials 1001. In this way, when the target material 1001 moves on the platen 401, good movement stability is maintained, which is beneficial to further improving the packaging efficiency of the reciprocating three-dimensional packaging machine in this embodiment.

[0051] In another embodiment of the present application, please refer to Figures 1 to 8 together. The driving assembly includes a rotating shaft 701 horizontally installed on the frame 100 and an elbow arm 702 with one end hinged to the rotating shaft 701 and capable of rotating relative to the rotating shaft 701. The end of the elbow arm 702 away from the rotating shaft 701 is connected to the first film folding knife 403; the driving assembly further includes a pull rod 703 hinged to the middle of the elbow arm 702 and used to drive the elbow arm 702 to rotate relative to the rotating shaft 701.

[0052] According to the above structure provided in this embodiment, when the pull rod 703 drives the bent arm 702 to rotate relative to the rotating shaft 701, the first film folding knife 403 can reciprocate stably and quickly between the film conveying roller 300 and the table board 401, so that the target packaging film 1002 can be folded onto the bottom surface of the target material 1001 more quickly, which is beneficial to further improve the packaging efficiency of the reciprocating three-dimensional packaging machine in this embodiment. It can be understood that the pull rod 703 can be driven by a reciprocating driving device.

[0053] In another embodiment of the present application, please refer to Figures 1 to 8 , the driving assembly further includes a first lifting shaft 704 that can lift in the height direction of the frame 100, a first support 705 connected to the first lifting shaft 704, a turning shaft 706 rotatably installed on the first support 705, a follower arm 707 sleeved on the turning shaft 706, a pulling arm 708 sleeved on the turning shaft 706, and a second pulling spring 709 connected between the pulling arm 708 and the first support 705 and capable of automatically resetting the pulling arm 708. The second film folding knife 404 is connected to the turning shaft 706; the driving assembly further includes a cam plate 710 connected to the frame 100. A roller 711 adapted to the cam plate 710 is installed at one end of the follower arm 707 away from the turning shaft 706. The roller 711 is used to drive the second film folding knife 404 to flip during the process of rolling relative to the cam plate 710.

[0054] According to the above structure provided in this embodiment, during the process of the first lifting shaft 704 lifting and lowering relative to the frame 100, it can drive the first support 705 and the turning shaft 706 rotatably installed on the first support 705 to lift and lower. In this way, the second film folding knife 404 connected to the turning shaft 706 can quickly enter the moving path of the target material 1001 and flip the target packaging film 1002, and can also quickly exit the moving path of the target material 1001 and avoid interfering with the movement of the target material 1001. During the process of the second film folding knife 404 approaching the target material 1001, since the roller 711 also rolls on the cam plate 710, by setting the cam plate 710 to a predetermined shape, the roller 711 can drive the follower arm 707 and drive the turning shaft 706 to flip. Since the pulling arm 708 is also sleeved on the turning shaft 706 and a second pulling spring 709 capable of automatic resetting is connected between the pulling arm 708 and the first support 705, during the process of the second lifting shaft 712 resetting, the second pulling spring 709 can make the turning shaft 706 automatically and quickly reset, which is beneficial to further improve the packaging efficiency of the reciprocating three-dimensional packaging machine in this embodiment.

[0055] In another embodiment of the present application, please refer to Figures 1 to 8, the driving assembly further includes a second lifting shaft 712 capable of lifting in the height direction of the frame 100, a lifting seat 713 connected to the second lifting shaft 712, a third main lifting shaft 714 connected to the lifting seat 713, a third auxiliary lifting shaft 715 slidably connected to the frame 100 and capable of lifting relative to the lifting seat 713 in the height direction of the frame 100, a second support 716 connected to the third main lifting shaft 714, a pin shaft 717 horizontally connected to the second support 716, a swing seat 718 hinged at one end to the pin shaft 717, and a third tension spring 719 connected between the swing seat 718 and the second support 716 and capable of automatically resetting the swing seat 718. The third film folding knife 405 is connected to the swing seat 718. The driving assembly further includes a pushing head 720 connected to the third auxiliary lifting shaft 715 and a pushing wheel 721 abutting against the pushing head 720. One end of the swing seat 718 away from the pin shaft 717 is connected to the pushing wheel 721 and can flip the third film folding knife 405 during the lifting of the third auxiliary lifting shaft 715.

[0056] According to the above structure provided in this embodiment, the second lifting shaft 712 capable of lifting relative to the frame 100 can drive the third main lifting shaft 714 and the third auxiliary lifting shaft 715 connected to the lifting seat 713 to lift relative to the frame 100 through the lifting seat 713 connected to the second lifting shaft 712. In this way, the third film folding knife 405 connected to the swing seat 718 can quickly enter the moving path of the target material 1001 and flip the target packaging film 1002 following the swing seat 718 connected to the second support 716, and can also quickly exit the moving path of the target material 1001 and avoid interfering with the movement of the target material 1001. During the process of the third film folding knife 405 approaching the target material 1001, by lifting the third auxiliary lifting shaft 715 relative to the moving seat 502, the pushing head 720 connected to the third auxiliary lifting shaft 715 can drive the pushing wheel 721 connected to the pushing head 720 to move. In this way, the swing seat 718 connected to the pushing wheel 721 can quickly and stably rotate relative to the pin shaft 717 connected to the second support 716 and make the third film folding knife 405 quickly reverse. The third tension spring 719 connected between the swing seat 718 and the second support 716 can automatically reset the swing seat 718 during the process of the third auxiliary lifting shaft 715 retracting, thereby driving the third film folding knife 405 connected to the swing seat 718 to quickly reset, which is beneficial to further improving the packaging efficiency of the reciprocating three-dimensional packaging machine in this embodiment.

[0057] In another embodiment of the present application, please refer to Figures 1 to 8, the driving assembly further includes a fourth lifting shaft 722 and a rotating arm 723 connected to the fourth lifting shaft 722. The fourth lifting shaft 722 is rotatably installed on the lifting seat 713 and can drive the rotating arm 723 to rotate relative to the lifting seat 713 around its own central axis. The fourth film folding knife 406 is connected to the fourth lifting shaft 722. The driving assembly further includes a motor 724 installed on the frame 100, and a crank 725, a connecting rod 726, and a spherical plain bearing 727 connected between the motor 724 and the rotating arm 723. The motor 724 drives the rotating arm 723 through the crank 725, the connecting rod 726, and the spherical plain bearing 727 to rotate the fourth lifting shaft 722. According to the above structure provided in this embodiment, the fourth film folding knife 406, which is also connected to the moving seat 502, can also move with the moving seat 502 to synchronously lift and lower with the third lifting main shaft 714. When the fourth lifting shaft 722 drives the fourth film folding knife 406 connected to the fourth lifting shaft 722 into the conveying path of the target material 1001, the motor 724 can drive the rotating arm 723 connected to the fourth lifting shaft 722 to rotate around the central axis of the fourth lifting shaft 722 through structures such as the crank 725, the connecting rod 726, and the spherical plain bearing 727. In this way, the fourth film folding knife 406 connected to the fourth lifting shaft 722 can quickly and stably rotate around the central axis of the fourth lifting shaft 722 and quickly fold the target packaging film 1002, which is beneficial to further improving the packaging efficiency of the reciprocating three-dimensional packaging machine in this embodiment.

[0058] It should be noted that, as described above, in some preferred embodiments of the present application, the top end of the third film folding knife 405 can be set lower than the top end of the fourth film folding knife 406 in the height direction of the frame 100. The significance of such a setting is that even if the third lifting main shaft 714 and the fourth lifting shaft 722 are lifted and lowered synchronously, the fourth film folding knife 406 will lag behind the third film folding knife 405 to separate from the target material 1001, so that the target packaging film 1002 can be better packaged on the target material 1001.

[0059] In another embodiment of the present application, please refer to Figures 1 to 8 , the folding assembly further includes a wire rail 408 vertically connected to the frame 100, a film pressing sliding seat 409 slidably connected to the wire rail 408, a film pressing rod 410 passing through the film pressing sliding seat 409 and slidably connected to the film pressing sliding seat 409. A retaining ring 412 is formed on the film pressing rod 410 at an interval from the film pressing sliding seat 409. The folding assembly further includes a film pressing foot 411 connected to the film pressing rod 410 and a return spring 413 connected between the retaining ring 412 and the film pressing sliding seat 409 and capable of automatically resetting the film pressing rod 410. The film pressing rod 410 is parallel to the wire rail 408, and the film pressing foot 411 faces the material pushing head 600 and is distributed on opposite sides of the film guiding sheet 402 with the material pushing head 600.

[0060] According to the above structure provided in this embodiment, the film pressing sliding seat 409 slidably connected to the linear guide 408 can drive the film pressing rod 410 connected to the film pressing sliding seat 409 and the film pressing foot 411 connected to the film pressing rod 410 to lift and lower relative to the frame 100. Since the position of the film pressing foot 411 is directly opposite to the blanking head 600, during the process of the blanking head 600 lifting the target material 1001, the film pressing foot 411 can abut against the top surface of the target material 1001 by descending relative to the frame 100, so that the target packaging film 1002 lapped on the target material 1001 can maintain a good positional relationship relative to the target material 1001, which is beneficial to further improving the packaging efficiency of the reciprocating three-dimensional packaging machine in this embodiment. In addition, since a return spring 413 is provided between the retaining ring 412 formed on the film pressing rod 410 and the film pressing sliding seat 409, after the film pressing foot 411 abuts against the top surface of the target material 1001, the return spring 413 can play a certain buffering role, thus effectively avoiding damage to the target packaging film 1002 caused by the film pressing foot 411, and this can also be beneficial to achieving better packaging quality of the reciprocating three-dimensional packaging machine in this embodiment.

[0061] In another embodiment of the present application, please also refer to Figures 1 to 8 , the reciprocating three-dimensional packaging machine further includes a heat-sealing plate 800 movably installed on the output side of the second film folding knife 404 along the feeding direction of the film conveying roller 300. The table board 401 and the guide board 407 are provided with hollow parts for the heat-sealing plate 800 to penetrate and approach the target material 1001. According to the above structure provided in this embodiment, the provided heat-sealing plate 800 can form heat-sealing on the lapping position of the target packaging film 1002 that has been folded in place, which is beneficial to further improving the packaging efficiency of the reciprocating three-dimensional packaging machine in this embodiment. In this embodiment, three heat-sealing plates 800 are provided, which are respectively located below the table board 401 and outside the guide board 707. Usually, the heat-sealing plates 800 are respectively driven by corresponding cylinders to approach the target material 1001 or retreat to the reset position to respectively perform heat-sealing on the target packaging film 1002 on both sides of the bottom of the target material 1001.

[0062] In another embodiment of the present application, please also refer to Figures 1 to 8 , a baffle 900 for blocking the target material 1001 is provided on the feeding path of the material conveyor belt 200. According to the above structure provided in this embodiment, the baffle 900 provided on the feeding path of the material conveyor belt 200 can block the target material 1001 at a predetermined position, so that the position of the target material 1001 can more quickly correspond to the blanking head 600 and facilitate the target material 1001 to be lifted by the blanking head 600, which is beneficial to further improving the packaging efficiency of the reciprocating three-dimensional packaging machine in this embodiment.

[0063] Here, it should be noted that the synchronization between the second lifting shaft 712, the third lifting auxiliary shaft 715, the first lifting shaft 704, and the pull rod 703 can be achieved by a camshaft mechanism or a servo drive mechanism of the prior art, which will not be elaborated herein.

[0064] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A reciprocating three-dimensional packaging machine, characterized in that, Comprising: A frame (100); A material conveyor belt (200), installed on the frame (100) and used for conveying a target material (1001); A film conveying roller (300), installed above the material conveyor belt (200) along the height direction of the frame (100) and used for conveying a target packaging film (1002) in a direction perpendicular to the material conveyor belt (200). A cutter (101) for cutting the target packaging film (1002) is provided on the output side of the film conveying roller (300); A folding assembly, including a platen (401) located in the feeding plane of the film conveying roller (300) and a film guiding piece (402) connected between the film conveying roller (300) and the platen (401). One side of the film guiding piece (402) close to the platen (401) is bent and extends below the platen (401). The folding assembly further includes a first film folding knife (403), a second film folding knife (404), a third film folding knife (405), a fourth film folding knife (406) and a guiding plate (407) which are respectively arranged at intervals on both sides of the conveying path of the target packaging film (1002). The second film folding knife (404) and the third film folding knife (405) are located between the fourth film folding knife (406) and the guiding plate (407) and are spaced oppositely along the height direction of the frame (100); A driving assembly, respectively drivingly connected to the first film folding knife (403), the second film folding knife (404), the third film folding knife (405) and the fourth film folding knife (406) and used for driving the first film folding knife (403) to move between the film conveying roller (300) and the platen (401) and driving the second film folding knife (404), the third film folding knife (405) and the fourth film folding knife (406) to flip. The rotation axes (706) of the second film folding knife (404) and the third film folding knife (405) are respectively horizontally arranged and are both perpendicular to the rotation axis (706) of the fourth film folding knife (406); A clamping assembly, including a two-dimensional servo sliding table (501) movably installed on the frame (100) and capable of reciprocatingly moving along the feeding direction of the film conveying roller (300), and a moving seat (502) connected to the output end of the two-dimensional servo sliding table (501). The clamping assembly further includes a plurality of fixed clamps (503) installed at intervals on the moving seat (502) along the feeding direction of the film conveying roller (300) and a moving clamp (504) spaced oppositely to one of the fixed clamps (503) close to the film conveying roller (300). The two-dimensional servo sliding table (501) is used for driving the moving seat (502) to lift along the height direction of the frame (100) and approach or move away from the platen (401) and reciprocatingly run along the feeding direction of the film conveying roller (300). The moving clamp (504) is used for approaching or moving away from the fixed clamps (503) along the feeding direction of the film conveying roller (300); The ejector head (600) is movably installed on the frame (100) and can move up and down along the height direction of the frame (100). The lifting path of the ejector head (600) intersects with the feeding path of the material conveyor belt (200). An interval for the target material (1001) to pass through is formed on the film guiding piece (402).

2. The reciprocating three-dimensional packaging machine according to claim 1, wherein: The clamping assembly includes a cylinder (505) installed on the moving seat (502) and a first tension spring (506) with one end connected to the moving seat (502); The middle part of the movable clamp (504) is hinged to the moving seat (502), and the rotation center axis of the movable clamp (504) relative to the moving seat (502) is parallel to the platen (401). The end of the movable clamp (504) far from the platen (401) is connected to the output end of the cylinder (505) and can be driven by the cylinder (505) to rotate relative to the moving seat (502). The end of the first tension spring (506) far from the moving seat (502) is connected to the side of the movable clamp (504) close to the cylinder (505) and can make the movable clamp (504) automatically reset.

3. The reciprocating three-dimensional packaging machine according to claim 2, wherein: The clamping assembly further includes a plurality of material blocking rods (507) connected to the moving seat (502) and arranged corresponding to the number of the fixed clamps (503) far from the film conveying roller (300); The material blocking rods (507) are arranged between adjacent fixed clamps (503) and are distributed along the feeding direction of the film conveying roller (300). The distance between the material blocking rods (507) and the fixed clamps (503) is adapted to the width of the target material (1001) in the feeding direction of the film conveying roller (300).

4. The reciprocating three-dimensional packaging machine according to claim 1, wherein: The driving assembly includes a rotating shaft (701) horizontally installed on the frame (100) and a bent arm (702) with one end hinged to the rotating shaft (701) and capable of rotating relative to the rotating shaft (701). The end of the bent arm (702) far from the rotating shaft (701) is connected to the first film folding knife (403); The driving assembly further includes a pull rod (703) hinged to the middle of the bent arm (702) and used to drive the bent arm (702) to rotate relative to the rotating shaft (701).

5. The reciprocating three-dimensional packaging machine according to claim 4, wherein: The driving assembly further includes a first lifting shaft (704) capable of lifting in the height direction of the frame (100), a first support (705) connected to the first lifting shaft (704), a turning shaft (706) rotatably mounted on the first support (705), a follower arm (707) sleeved on the turning shaft (706), a pulling arm (708) sleeved on the turning shaft (706), and a second pulling spring (709) connected between the pulling arm (708) and the first support (705) and capable of automatically resetting the pulling arm (708). The second film folding knife (404) is connected to the turning shaft (706); The driving assembly further includes a cam plate (710) connected to the frame (100). A roller (711) adapted to the cam plate (710) is mounted at one end of the follower arm (707) away from the turning shaft (706). The roller (711) is used to drive the second film folding knife (404) to flip during the process of rolling relative to the cam plate (710).

6. The reciprocating three-dimensional packaging machine according to claim 5, wherein: The driving assembly further includes a second lifting shaft (712) capable of lifting in the height direction of the frame (100), a lifting seat (713) connected to the second lifting shaft (712), a third main lifting shaft (714) connected to the lifting seat (713), a third auxiliary lifting shaft (715) slidably connected to the frame (100) and capable of lifting relative to the lifting seat (713) in the height direction of the frame (100), a second support (716) connected to the third main lifting shaft (714), a pin shaft (717) horizontally connected to the second support (716), a swinging seat (718) hinged at one end to the pin shaft (717), and a third pulling spring (719) connected between the swinging seat (718) and the second support (716) and capable of automatically resetting the swinging seat (718). The third film folding knife (405) is connected to the swinging seat (718); The driving assembly further includes a pushing head (720) connected to the third auxiliary lifting shaft (715) and a pushing wheel (721) abutted against the pushing head (720). One end of the swinging seat (718) away from the pin shaft (717) is connected to the pushing wheel (721) and is capable of making the third film folding knife (405) flip during the lifting process of the third auxiliary lifting shaft (715).

7. The reciprocating three-dimensional packaging machine according to claim 6, wherein: The driving assembly further includes a fourth lifting shaft (722) and a rotating arm (723) connected to the fourth lifting shaft (722). The fourth lifting shaft (722) is rotatably mounted on the lifting seat (713) and is capable of driving the rotation around its own axis relative to the lifting seat (713) through the rotating arm (723). The fourth film folding knife (406) is connected to the fourth lifting shaft (722); The driving assembly further includes a motor (724) installed on the frame (100), and a crank (725), a connecting rod (726), and a spherical plain bearing (727) connected between the motor (724) and the rotating arm (723). The motor (724) drives the rotating arm (723) through the crank (725), the connecting rod (726), and the spherical plain bearing (727) to rotate the fourth lifting shaft (722).

8. The reciprocating three-dimensional packaging machine according to claim 1, wherein: The folding assembly further includes a wire rail (408) vertically connected to the frame (100), a film pressing sliding seat (409) slidably connected to the wire rail (408), a film pressing rod (410) passing through the film pressing sliding seat (409) and slidably connected to the film pressing sliding seat (409). A retaining ring (412) spaced from the film pressing sliding seat (409) is formed on the film pressing rod (410); the folding assembly further includes a film pressing foot (411) connected to the film pressing rod (410), and a return spring (413) connected between the retaining ring (412) and the film pressing sliding seat (409) and capable of automatically resetting the film pressing rod (410); The film pressing rod (410) is parallel to the wire rail (408), and the film pressing foot (411) faces the blanking head (600) and is distributed on opposite sides of the film guiding sheet (402) with the blanking head (600).

9. The reciprocating three-dimensional packaging machine according to claim 1, wherein: The reciprocating three-dimensional packaging machine further includes a heat-sealing plate (800) movably installed on the output side of the second film folding knife (404) along the feeding direction of the film conveying roller (300). The table board (401) and the guide plate (407) are provided with hollow openings for the heat-sealing plate (800) to penetrate and approach the target material (1001).

10. The reciprocating three-dimensional packaging machine according to claim 1, wherein: A baffle (900) for blocking the target material (1001) is provided on the feeding path of the material conveyor belt (200).

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