Carton sealing machine with high stability

Abstract

The utility model relates to the technical field of logistics packaging equipment, and discloses a high-stability carton sealing machine which comprises a base, a width limiting conveying mechanism, a height limiting mechanism, a cover folding mechanism, an adhesive tape sealing machine and a carton. The positions, close to the lower ends, of the inner sides of the two sides of the height limiting mechanism are fixedly arranged in the middles of the two sides of the base. According to the carton sealing machine, when the carton sealing machine is used, a user places a carton at the upper ends of the unpowered rollers between the two width limiting frames so that the carton can be well conveyed along with the two conveying belts, and a carton cover plate is well folded and flattened through the cover folding air rod, the cover folding frame, the two telescopic rods and the arc-shaped plate and well sealed through the adhesive tape sealing machine; and the width-limiting conveying mechanism and the height-limiting mechanism can be adjusted according to actual needs to adapt to cartons of different sizes, the stability of the cartons in the conveying and sealing process is high, the labor cost is effectively reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of logistics packaging equipment, in particular to a carton sealer with high stability. Background Technique

[0002] A carton sealer is a packaging device used to seal cartons to ensure the safety and integrity of products during transportation and storage. It is widely used in production lines in industries such as food, medicine, and daily necessities to improve packaging efficiency and reduce labor costs. The reason why a carton sealer needs to have high stability is that it must ensure the consistency and reliability of carton sealing during continuous operation. Otherwise, it will lead to a decline in packaging quality or production interruption, thus affecting the production efficiency and cost control of enterprises. Some existing carton sealers require manual folding of the lid and then using tape to seal the carton in the sealer. Some are difficult to adjust the height and width and cannot adapt to cartons of different sizes, which affects the stability and continuity of the carton sealing process, and the production efficiency needs to be improved.

[0003] After retrieval, the existing patent (publication number: CN216103084U) discloses a "carton sealer, including a support seat, a channel for the box to pass through is arranged inside the support seat, and a support plate is arranged to move up and down inside the channel. In the use of the present utility model, the user only needs to push the carton into the channel from one end. After the carton abuts against the adhesive tape and is pasted, as the carton is continuously pushed in, the tape smoothly seals the carton. Then, as the carton abuts against the scraper, the side of the scraper evenly scrapes across the tape as the carton moves, making the tape stick firmly. After the carton is unidirectionally pushed out, the user then reversely pushes the carton a short distance, so that the scraper pastes the vertical tape on the other side of the carton firmly, and the carton sealing can be completed. The whole process only requires the user to simply push the carton, with simple operation, time-saving and labor-saving, ensuring the sealing quality while ensuring the speed. Moreover, the structure of the present utility model is simple and the cost is low."

[0004] The inventor found the following problems in the process of implementing the present application: Although the above comparative patent provides a carton sealer by setting a support seat, a channel, a support plate and a scraper, and the tape smoothly seals the carton as the carton abuts against the scraper during the process of the carton passing through the channel, it requires the operator to manually fold the lid of the carton in advance, increasing the labor cost and having a lower production efficiency. Therefore, those skilled in the art provide a carton sealer with high stability to solve the problems raised in the above background technique. Content of the Utility Model

[0005] The purpose of the present utility model is to solve the drawbacks existing in the prior art, and a case sealer with high stability is proposed. When using this case sealer, the user places the cardboard box on the upper ends of multiple idle rollers between two width-limiting frames, so that it can be well conveyed along with the two conveyor belts. The flap folding air rod, the flap folding frame, the two telescopic rods and the arc-shaped plate can well fold and flatten the cardboard box cover and seal it well through the tape sealing machine. It can also be adjusted according to actual needs by adjusting the width-limiting conveying mechanism and the height-limiting mechanism to adapt to cardboard boxes of different sizes. The cardboard box has high stability during the conveying and sealing process, effectively reducing the labor cost and improving the work efficiency.

[0006] To achieve the above purpose, the present utility model provides the following technical solutions: A case sealer with high stability, including a base, a width-limiting conveying mechanism, a height-limiting mechanism, a flap folding mechanism, a tape sealing machine and a cardboard box. The width-limiting conveying mechanism is fixedly arranged through the middle position at the upper end of the base. The inner sides of both sides of the height-limiting mechanism are fixedly arranged at the middle positions on both sides of the base near the lower end. The rear part at the lower end of the flap folding mechanism is fixedly arranged at the middle position at the upper end of the height-limiting mechanism. The middle position at the front end of the tape sealing machine is fixedly arranged at the middle position at the upper part near the rear end of the height-limiting mechanism. The cardboard box is slidably arranged at the front part on the upper end of the base at the position of the inner slideway of the width-limiting conveying mechanism;

[0007] The base includes a main frame, four support columns and multiple idle rollers. The width-limiting conveying mechanism includes two width-limiting frames, two conveyor belts, two motors, two lead screws and four moving blocks. The height-limiting mechanism includes a cross plate, two vertical plates, two vertical groove blocks, two screws, two horizontal bevel gears, two vertical bevel gears and a cross beam. The flap folding mechanism includes a front arm, a first air rod, a transmission block, a flap folding frame, a flap folding air rod, two telescopic rods and an arc-shaped plate;

[0008] Through the above technical solutions, during use, the user appropriately adjusts the width-limiting conveying mechanism or the height-limiting mechanism by shaking the width-adjusting crank or the height-adjusting crank according to the height and width of the cardboard boxes in the current batch. The cardboard box is placed on multiple idle rollers on the upper end of the base between the two conveyor belts inside the two width-limiting frames of the width-limiting conveying mechanism. The surfaces of the two conveyor belts are fixedly provided with patterns with considerable friction, which cooperate with the multiple idle rollers to play a good conveying role for the cardboard box. As the cardboard box is conveyed, the flap folding mechanism folds the cardboard box cover well through the flap folding frame, two flap folding air rods, two telescopic rods and the arc-shaped plate for the tape sealing machine to seal.

[0009] Further, the inner sides of the upper parts of the four support columns are respectively fixedly arranged at the four corners of the main frame. Universal wheels are respectively fixedly arranged at the lower ends of the four support columns. The multiple idle rollers are respectively evenly rotatably arranged at both sides inside the main frame through rotating shafts at both ends;

[0010] Through the above technical solution, the four pillars provide good support for the carton sealing machine. The universal wheels fixedly arranged at the lower ends of the four pillars improve the convenience and flexibility of using the carton sealing machine. The multiple idle rollers effectively cooperate with the two conveyor belts to play a good role in conveying the carton.

[0011] Further, the two width-limiting frames are symmetrically and movably arranged at the upper ends of the multiple idle rollers respectively. The two conveyor belts are respectively rotatably arranged inside the two width-limiting frames through multiple guide wheels. The two motors are symmetrically arranged, and their upper ends are fixedly arranged at the middle positions near the carton end at the lower ends of the two width-limiting frames through brackets. Two of the multiple guide wheels inside the two conveyor belts are symmetrically arranged, and their lower ends are respectively fixedly connected to the output ends of the two motors. The four moving blocks are grouped in pairs and symmetrically arranged. Their upper ends are fixedly arranged at the positions near the carton and away from the carton at the lower ends of the two width-limiting frames through connecting rods passing through the gaps between the multiple idle rollers.

[0012] Through the above technical solution, the two motors drive two guide wheels as driving wheels and cooperate with other guide wheels as driven wheels to drive the two conveyor belts well. An annular groove is formed in the middle of the multiple guide wheels. Convex strips are fixedly arranged at the middle positions of the inner surfaces of the two conveyor belts. The convex strips are well clamped inside the annular groove, effectively preventing the two conveyor belts from shifting accidentally.

[0013] Further, the two lead screws respectively penetrate through and are threadedly sleeved on the two of the four moving blocks close to the carton and the other two at both ends. One end of the lead screw far from the carton is rotatably arranged at the lower and rear position on the inner side of one side of the main frame. The other end of the lead screw far from the carton penetrates through the lower and rear position on the inner side of the other side of the main frame and is fixedly provided with a width-adjusting crank. The two ends of the lead screw close to the carton are rotatably arranged at the lower and front positions on the inner sides of the two sides of the main frame. The positions of the lead screw rod bodies close to the width-adjusting crank are connected by a synchronous belt and synchronous pulleys.

[0014] Through the above technical solution, during use, according to actual usage needs, the user can shake the width-adjusting crank and drive the two lead screws to rotate by using the synchronous belt and synchronous pulleys. The four moving blocks threadedly sleeved on the two lead screws move outward or inward accordingly, so that the distance between the two width-limiting frames increases or decreases with the four moving blocks fixedly connected to their lower ends.

[0015] Further, the upper ends of the horizontal plates are fixedly arranged near both sides and are fixed to the lower ends of the main frame near the middle positions of both sides. The upper parts near the inner sides of the two vertical plates are fixedly arranged at the end positions of both sides of the horizontal plate. The two vertical groove blocks are symmetrically arranged with grooves facing inwards and their lower ends are fixedly arranged at the positions near the edges of both sides of the upper end of the horizontal plate. The cross beam is slidably arranged in the inner grooves of the two vertical groove blocks through the protrusions at both ends. The two screw rods are symmetrically arranged and are threaded through and sleeved in the middle positions of the protrusions at both ends of the horizontal plate on both sides;

[0016] Through the above technical solution, the two screw rods are symmetrically arranged and are threaded through and sleeved in the middle positions of the protrusions at both ends of the cross beam on both sides. When the two screw rods rotate, the cross beam slides up or down well in the inner grooves of the two vertical groove blocks, so as to adapt to cartons of different heights.

[0017] Further, the lower ends of the two screw rods are symmetrically arranged and respectively penetrate through the horizontal plate and are fixedly arranged on the upper ends of the two horizontal bevel gears. The two vertical bevel gears are symmetrically arranged and are rotatably connected to the positions near the middle and lower parts of the inner sides of the two vertical plates through a rotating shaft. One end of the rotating shaft penetrates through one of the two vertical plates and is fixedly provided with a height-adjusting crank. The two horizontal bevel gears are respectively in good meshing with the two vertical bevel gears;

[0018] Through the above technical solution, during use, the user can shake the height-adjusting crank according to actual use needs to drive the two vertical bevel gears through the rotating shaft and drive the two horizontal bevel gears meshing with them, so that the two screw rods rotate well.

[0019] Further, the rear part of the lower end of the front arm is fixedly arranged at the middle position of the upper end of the cross beam. A chute is axially formed at the middle position of the upper end of the front arm. A platform is slidably arranged in the chute. The middle position of the protrusion on one side of the upper end of the platform near the cross beam is rotatably arranged at one end of the first air rod near the cross beam through a rotating shaft. The other end of the first air rod is rotatably arranged at the middle position of the upper end of the transmission block through a rotating shaft. The lower parts near both sides of the transmission block are rotatably arranged at the middle positions of the protrusions on the side of the upper end of the platform far from the cross beam through rotating shafts. The middle and lower position of the end of the transmission block far from the cross beam is fixedly connected to the upper end of the folding cover frame;

[0020] Through the above technical solution, during use, the user can slide the platform well according to actual needs to adapt to cartons of different lengths. When the first air rod extends, it drives the transmission block to rotate away from the cross beam side with the lower end rotating shaft as the axis, and further rotates the folding cover frame and folds the cover plate on the side of the carton far from the cross beam.

[0021] Furthermore, one end of the folding cover air rod near the cross beam is ball-hinged to the middle position of the end of the front arm away from the cross beam. One side of the folding cover air rod near the cross beam is fixedly connected to one side of the first air rod near the cross beam through a hose. The two telescopic rods are respectively ball-hinged to the middle position of the two sides of the front arm at the middle position of the fixed seats extending to both sides, near the middle position of the end close to the carton. The middle position of the upper end of the arc-shaped plate is axially fixedly arranged on the lower end of the front arm, away from the middle position of the cross beam. The middle position of the end of the tape sealing machine near the carton is fixedly arranged at the upper middle position of the end of the cross beam away from the carton.

[0022] Through the above technical solution, when the folding cover air rod touches the cover plate on the side of the carton near the cross beam, it not only folds the cover plate, but also drives the first air rod connected to it through a hose to extend. The two telescopic rods extend out to both sides away from the cross beam in a trapezoidal opening, and the two side cover plates of the carton are well folded as the carton is conveyed. The arc-shaped plate further folds and flattens the cover plate of the carton, and the tape sealing machine seals the conveyed carton well. The ball-hinged and telescopic design facilitates the user to adjust appropriately according to actual usage needs to adapt to cartons of different sizes.

[0023] The utility model has the following beneficial effects:

[0024] 1. A carton sealer with high stability proposed by the utility model. The width-limiting transmission structure of the carton sealer uses two transmission belts and a plurality of unpowered rollers to convey the carton smoothly, and uses two lead screws and four moving blocks threadedly sleeved thereon to flexibly adjust the distance between the two width-limiting frames to adapt to cartons of different widths. The height-limiting mechanism drives the two screws to rotate through the good meshing of two horizontal bevel gears and two vertical bevel gears, so that the cross beam slides up and down well to adapt to cartons of different heights. The platform at the upper end of the front arm can slide well to adjust the forward extension length of the folding cover mechanism to adapt to cartons of different lengths. The carton sealer can be used for cartons of different heights, widths or lengths after simple adjustment, with high adaptability and flexibility, ensuring the smooth conveyance and efficient sealing of the carton.

[0025] 2. A carton sealer with high stability proposed by the utility model. When the folding cover air rod of the carton sealer touches and folds the cover plate of the carton near the cross beam, it drives the first air rod to extend, causing the transmission block to rotate axially away from the cross beam with the lower end rotating shaft as the axis. Furthermore, the folding cover frame rotates to fold the cover plate of the carton away from the cross beam. During the conveyance of the carton, the two side cover plates of the carton are folded by the two telescopic rods with a trapezoidal opening. The arc-shaped plate further folds and flattens the cover plate of the carton and is well sealed by the tape sealing machine. The folding cover mechanism automatically folds the cover plate of the carton well during the conveyance of the carton, effectively improving the packaging efficiency and packaging quality.

[0026] 3. A carton sealer with high stability proposed by the present utility model. The base of the carton sealer is provided with good support for the carton sealer through four pillars, ensuring the good stability of the equipment during the production process. The universal wheels at the lower ends of the four pillars enable the equipment to have good mobility. The rolling friction provided by multiple unpowered rollers enables the cardboard boxes to be well conveyed by two conveyor belts even in the empty box state. It not only has high stability and convenient movement, but also effectively improves the production and packaging efficiency, thereby increasing the enterprise benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an isometric schematic view of the present utility model;

[0028] Figure 2 is a side view schematic view of the present utility model;

[0029] Figure 3 is a top view schematic view of the present utility model;

[0030] Figure 4 is a bottom view schematic view of the present utility model;

[0031] Figure 5 is a front view and a front sectional view schematic view of the present utility model.

[0032] LEGEND DESCRIPTION:

[0033] 1. Base; 2. Width-limiting conveying mechanism; 3. Height-limiting mechanism; 4. Flap folding mechanism; 5. Tape sealing machine; 6. Cardboard box; 101. Main frame; 102. Pillar; 103. Unpowered roller; 201. Width-limiting frame; 202. Conveyor belt; 203. Motor; 204. Lead screw; 205. Moving block; 301. Horizontal plate; 302. Vertical plate; 303. Vertical groove block; 304. Screw rod; 305. Horizontal bevel gear; 306. Vertical bevel gear; 307. Cross beam; 401. Forearm; 402. First air rod; 403. Transmission block; 404. Flap folding frame; 405. Flap folding air rod; 406. Telescopic rod; 407. Arc plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0035] Refer to Figures 1-5, an embodiment provided by the present utility model: a carton sealing machine with high stability, including a base 1, a width-limiting conveying mechanism 2, a height-limiting mechanism 3, a lid-folding mechanism 4, a tape sealing machine 5 and a carton 6. The width-limiting conveying mechanism 2 is fixedly arranged through the middle position at the upper end of the base 1. The height-limiting mechanism 3 is fixedly arranged at the middle positions on both sides of the base 1 near the lower end on the inner sides of both sides. The lower end of the lid-folding mechanism 4 is fixedly arranged at the middle position at the upper end of the height-limiting mechanism 3. The middle position at the front end of the tape sealing machine 5 is fixedly arranged at the middle position near the upper part at the rear end of the height-limiting mechanism 3. The carton 6 is slidably arranged at the front part at the upper end of the base 1 at the position of the inner slideway of the width-limiting conveying mechanism 2.

[0036] During use, the user appropriately adjusts the width-limiting conveying mechanism 2 or the height-limiting mechanism 3 by shaking the width-adjusting crank or the height-adjusting crank according to the height and width of the cartons 6 in the current batch. The carton 6 is placed on a plurality of idle rollers 103 at the upper end of the base 1 between the two conveyor belts 202 inside the two width-limiting frames 201 of the width-limiting conveying mechanism 2. The surfaces of the two conveyor belts 202 are fixedly provided with patterns with considerable friction, which cooperate with the plurality of idle rollers 103 to play a good conveying role for the carton 6. As the carton 6 is conveyed, the lid-folding mechanism 4 folds the lid of the carton 6 well through the lid-folding frame 404, two lid-folding air rods 405, two telescopic rods 406 and the arc-shaped plate 407 for the tape sealing machine 5 to seal.

[0037] The base 1 includes a main frame 101, four support columns 102 and a plurality of idle rollers 103. The upper parts near the inner sides of the four support columns 102 are respectively fixedly arranged at the four corners of the main frame 101. Universal wheels are respectively fixedly arranged at the lower ends of the four support columns 102. The two ends of the plurality of idle rollers 103 are respectively and evenly rotatably arranged inside the main frame 101 through rotating shafts at the inner sides of both sides. The four support columns 102 provide good support for the carton sealing machine. The universal wheels respectively fixedly arranged at the lower ends of the four support columns 102 improve the convenience and flexibility of using the carton sealing machine. The plurality of idle rollers 103 effectively cooperate with the two conveyor belts 202 to play a good conveying role for the carton 6.

[0038] The width-limiting conveying mechanism 2 includes two width-limiting frames 201, two conveyor belts 202, two motors 203, two lead screws 204 and four moving blocks 205. The two width-limiting frames 201 are respectively movably arranged in an axisymmetric manner on the upper ends of the plurality of idle rollers 103. The two conveyor belts 202 are respectively rotatably arranged inside the two width-limiting frames 201 through a plurality of guide wheels. The upper ends of the two motors 203 are respectively fixedly arranged in an axisymmetric manner at the middle positions near one end of the carton 6 at the lower ends of the two width-limiting frames 201 through brackets. Two of the plurality of guide wheels inside the two conveyor belts 202 are respectively fixedly connected to the output ends of the two motors 203 in an axisymmetric manner.

[0039] Two motors 203 drive two guide wheels as driving wheels to cooperate with other guide wheels as driven wheels to drive two conveyor belts 202 well. An annular groove is formed in the middle of multiple guide wheels. Convex strips are respectively fixedly arranged at the middle positions of the inner surfaces of the two conveyor belts 202. The convex strips are well clamped into the annular groove, effectively avoiding accidental displacement of the two conveyor belts 202.

[0040] Four moving blocks 205, two in a group and axially symmetric, respectively fix the upper ends through connecting rods through the gaps between multiple idle rollers 103 to the lower ends of the two width-limiting frames 201 at positions close to and far from the carton 6. Two lead screws 204 respectively penetrate and are threadedly sleeved into two of the four moving blocks 205 close to the carton 6 and the two ends of the other two. One end of one of the two lead screws 204 far from the carton 6 is rotatably arranged at a position on the inner side of one side of the main frame 101, slightly lower and towards the rear. The other end of one of the two lead screws 204 far from the carton 6 penetrates through the inner side of the other side of the main frame 101, slightly lower and towards the rear, and is fixedly provided with a width-adjusting crank. The two ends of one of the two lead screws 204 close to the carton 6 are rotatably arranged at positions on the inner sides of the two sides of the main frame 101, slightly lower and towards the front. The positions of the two lead screws 204 close to the width-adjusting crank are connected by a synchronous belt and synchronous pulleys.

[0041] During use, according to actual usage needs, the user can shake the width-adjusting crank and drive the two lead screws 204 to rotate by using the synchronous belt and synchronous pulleys. The four moving blocks 205 threadedly sleeved with the two lead screws 204 move outward or inward accordingly, so that the distance between the two width-limiting frames 201 increases or decreases with the four moving blocks 205 fixedly connected to their lower ends.

[0042] The height-limiting mechanism 3 includes a cross plate 301, two vertical plates 302, two vertical groove blocks 303, two screw rods 304, two horizontal bevel gears 305, two vertical bevel gears 306 and a cross beam 307. The upper end of the cross plate 301 is fixedly arranged at positions on the lower end of the main frame 101, close to the middle positions on both sides. The upper parts of the inner sides of the two vertical plates 302 are fixedly arranged at the end positions on both sides of the cross plate 301. The two vertical groove blocks 303 are axially symmetric, with the grooves facing inwards, and the lower ends are fixedly arranged at positions on the upper end of the cross plate 301, close to the edge positions on both sides. The cross beam 307 is slidably arranged in the inner grooves of the two vertical groove blocks 303 through the protrusions at both ends.

[0043] Two screw rods 304 penetrate through the threaded sleeves symmetrically about the axis and are sleeved at the middle positions inside the protrusions at both ends of the cross plate 301. Two screw rods 304 penetrate through the threaded sleeves symmetrically about the axis and are sleeved at the middle positions inside the protrusions at both ends of the cross beam 307. The lower ends of the two screw rods 304 penetrate through the cross plate 301 symmetrically about the axis and are fixedly arranged at the upper ends of the two horizontal bevel gears 305. The two vertical bevel gears 306 are rotatably connected to the middle positions near the lower part of the inner sides of the two vertical plates 302 symmetrically about the axis. One end of the rotating shaft penetrates through one of the two vertical plates 302 and is fixedly provided with a height-adjusting crank. The two horizontal bevel gears 305 are respectively in good meshing with the two vertical bevel gears 306.

[0044] During use, the user can shake the height-adjusting crank according to actual use needs to drive the two vertical bevel gears 306 through the rotating shaft and drive the two horizontal bevel gears 305 meshing with them, so that the two screw rods 304 rotate well. When the two screw rods 304 rotate, the cross beam 307 slides well upward or downward in the inner grooves of the two vertical groove blocks 303, so as to adapt to cartons 6 of different heights.

[0045] The folding cover mechanism 4 includes a front arm 401, a first air rod 402, a transmission block 403, a folding cover frame 404, a folding cover air rod 405, two telescopic rods 406 and an arc plate 407. The rear part near the lower end of the front arm 401 is fixedly arranged at the middle position of the upper end of the cross beam 307. A chute is axially opened at the middle position of the upper end of the front arm 401, and a platform is slidably arranged in the chute. During use, the user can slide the platform well according to actual needs to adapt to cartons 6 of different lengths.

[0046] The middle position of the protrusion on the upper end of the platform near one side of the cross beam 307 is rotatably arranged at one end of the first air rod 402 near the cross beam 307 through a rotating shaft. The other end of the first air rod 402 is rotatably arranged at the middle position of the upper end of the transmission block 403 through a rotating shaft. The lower parts near both sides of the transmission block 403 are rotatably arranged at the middle positions of the protrusions on the upper end of the platform far from one side of the cross beam 307 through rotating shafts. The middle position near the lower end of the end of the transmission block 403 far from the cross beam 307 is fixedly connected to the upper end of the folding cover frame 404. When the first air rod 402 extends, it drives the transmission block 403 to rotate away from the cross beam 307 side with the lower end rotating shaft as the axis, and further rotates the folding cover frame 404 to fold the cover plate on the side of the carton 6 far from the cross beam 307.

[0047] One end of the folding cover air rod 405 near the cross beam 307 is ball-jointedly connected to the middle position of the end of the front arm 401 far from the cross beam 307. One side of the folding cover air rod 405 near the cross beam 307 is fixedly connected to one side of the first air rod 402 near the cross beam 307 through a hose. When the folding cover air rod 405 touches the cover plate on the side of the carton 6 near the cross beam 307, it not only folds it, but also drives the first air rod 402 connected to it through the hose to extend.

[0048] The two telescopic rods 406 are respectively ball-jointedly connected to the middle positions near the end of the carton 6 of the fixed seats extending to both sides fixedly arranged at the middle positions on both sides of the forearm 401. The two telescopic rods 406 extend out to both sides away from the cross beam 307 to form a trapezoidal opening, and when the carton 6 is conveyed, the side covers thereof are well folded. The middle position at the upper end of the arc-shaped plate 407 is axially fixedly arranged on the forearm 401 at the middle position away from the cross beam 307 at the lower end through a connecting plate. The arc-shaped plate 407 further folds and flattens the cover of the carton 6. The middle position near the end of the carton 6 of the tape sealing machine 5 is fixedly arranged at the upper middle position near the end away from the carton 6 of the cross beam 307. The tape sealing machine 5 well seals the conveyed carton 6. The ball-joint and telescopic design facilitates the user to adjust appropriately according to actual usage needs to adapt to cartons 6 of different sizes.

[0049] Working principle: When in use, the user places the carton 6 on the upper ends of the plurality of unpowered rollers 103 between the two width-limiting frames 201. The carton 6 is well conveyed along with the two conveyor belts 202. While the flap air cylinder 405 folds the cover of the carton 6 near the cross beam 307, it drives the first air cylinder 402 to extend and drives the transmission block 403 to rotate away from the cross beam 307 in the axial direction with the lower end rotating shaft as the axis, so that the flap frame 404 rotates to fold the cover of the carton 6 away from the cross beam 307. The two telescopic rods 406 with trapezoidal openings fold the side covers of the carton 6. The arc-shaped plate 407 further folds and flattens the cover of the carton 6 and is well sealed by the tape sealing machine 5. The user can adapt to cartons 6 of different sizes by adjusting the width-limiting conveying mechanism 2 and the height-limiting mechanism 3 according to actual needs.

[0050] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A carton sealing machine with high stability, comprising a base (1), a width-limiting conveying mechanism (2), a height-limiting mechanism (3), a cover-folding mechanism (4), a tape sealing machine (5) and a carton (6), characterized in that: The width limiting conveying mechanism (2) is fixedly arranged at the middle position of the upper end of the base (1); the inner sides of both sides of the height limiting mechanism (3) are fixedly arranged at the middle positions of both sides of the base (1) near the lower end; the rear part of the lower end of the folding mechanism (4) is fixedly arranged at the middle position of the upper end of the height limiting mechanism (3); the middle position of the front end of the tape sealing machine (5) is fixedly arranged at the middle position of the rear end of the height limiting mechanism (3); and the carton (6) is slidably arranged at the front of the upper end of the base (1) and located at the inner slideway position of the width limiting conveying mechanism (2); The base (1) comprises a main frame (101), four pillars (102) and a plurality of unpowered rollers (103); the width-limiting transmission mechanism (2) comprises two width-limiting frames (201), two conveyor belts (202), two motors (203), two screw rods (204) and four moving blocks (205); the height-limiting mechanism (3) comprises a horizontal plate (301), two vertical plates (302), two vertical slot blocks (303), two screw rods (304), two horizontal bevel gears (305), two vertical bevel gears (306) and a crossbeam (307); and the cover folding mechanism (4) comprises a forearm (401), a first gas rod (402), a transmission block (403), a cover folding frame (404), a cover folding gas rod (405), two telescopic rods (406) and an arc plate (407).

2. A carton sealing machine with high stability according to claim 1, characterized in that: The upper inner sides of the four pillars (102) are respectively fixedly arranged at the four corners of the main frame (101); the lower ends of the four pillars (102) are respectively fixedly arranged with universal wheels; and the plurality of unpowered rollers (103) are respectively evenly rotated at both ends through rotating shafts and arranged at the inner positions on both sides of the inside of the main frame (101).

3. A carton sealing machine with high stability according to claim 1, characterized in that: The two width-limiting frames (201) are axially symmetrical and are movably arranged on the upper ends of the plurality of unpowered rollers (103); the two conveyor belts (202) are rotatably arranged inside the two width-limiting frames (201) through a plurality of guide wheels; the two motors (203) are axially symmetrical and have their upper ends fixedly arranged through brackets in the middle of the lower ends of the two width-limiting frames (201) close to one end of the carton (6); two of the plurality of guide wheels inside the two conveyor belts (202) are axially symmetrical and have their lower ends fixedly connected to the output ends of the two motors (203); the four moving blocks (205) are grouped in two axially symmetrical groups and have their upper ends fixedly arranged through connecting rods penetrating the gaps between the plurality of unpowered rollers (103) to the lower ends of the two width-limiting frames (201) close to the carton (6) and away from the carton (6).

4. A carton sealing machine with high stability according to claim 1, characterized in that: The two screw rods (204) are respectively threadedly sleeved on the two ends of the two and the other two of the four moving blocks (205) close to the carton (6); one end of the one of the two screw rods (204) away from the carton (6) is rotated to be set to the lower rear position on the inner side of one side of the main frame (101); the other end of the one of the two screw rods (204) away from the carton (6) passes through the lower rear position on the inner side of the other side of the main frame (101) and is fixedly provided with a width adjustment handle; the two ends of the one of the two screw rods (204) close to the carton (6) are rotated to be set to the lower front position on the inner side of both sides of the main frame (101); the rod bodies of the two screw rods (204) are connected by synchronous belts and synchronous wheels near the width adjustment handle.

5. A carton sealing machine with high stability according to claim 1, characterized in that: The upper end of the transverse plate (301) is fixedly arranged near the two sides of the lower end of the main frame (101) near the middle position of the two sides, the inner sides of the two vertical plates (302) are fixedly arranged at the end positions of the two sides of the transverse plate (301), the two vertical slot blocks (303) are axially symmetrical and respectively grooved inward to fix the lower ends to the upper end of the transverse plate (301) near the edge positions of the two sides, the cross beam (307) is slidably arranged in the inner grooves of the two vertical slot blocks (303) through the protrusions on the two sides of the end, and the two screw rods (304) are axially symmetrical and threadedly sleeved to the middle position inside the protrusions on the two sides of the transverse plate (301).

6. A carton sealing machine with high stability according to claim 1, characterized in that: The two screw rods (304) are axially symmetrical, and the lower ends thereof penetrate the horizontal plate (301) and are fixedly arranged on the upper ends of the two horizontal bevel gears (305). The two vertical bevel gears (306) are axially symmetrical and are rotatably connected to the lower middle position of the inner sides of the two vertical plates (302) through a rotating shaft. One end of the rotating shaft penetrates one of the two vertical plates (302) and is fixedly provided with a height adjustment crank. The two horizontal bevel gears (305) are respectively well meshed with the two vertical bevel gears (306).

7. A carton sealing machine with high stability according to claim 1, characterized in that: The rearward part of the lower end of the forearm (401) is fixedly arranged to the middle position of the upper end of the beam (307); a slide groove is axially provided at the middle position of the upper end of the forearm (401); a platform is slidably arranged in the slide groove; the raised middle position at the upper end of the platform close to one side of the beam (307) is rotated to the end of the first gas rod (402) close to the beam (307) through a rotating shaft; the other end of the first gas rod (402) is rotated to the middle position of the upper end of the transmission block (403) through a rotating shaft; the lower parts of both sides of the transmission block (403) are rotated to the raised middle position at the upper end of the platform away from the beam (307) through a rotating shaft; the lower middle position of one end of the transmission block (403) away from the beam (307) is fixedly connected to the upper end of the folding cover frame (404).

8. A carton sealing machine with high stability according to claim 1, characterized in that: The folding cover gas rod (405) is ball-hingedly connected at one end near the cross beam (307) to the middle position of one end of the forearm (401) away from the cross beam (307); one side of the folding cover gas rod (405) is fixedly connected to one side of the first gas rod (402) near the cross beam (307) through a hose; the two telescopic rods (406) are respectively ball-hingedly connected to the middle position of the fixed seats extending to both sides fixedly arranged at the middle positions of both sides of the forearm (401) near the middle position of one end of the carton (6); the middle position of the upper end of the arc plate (407) is axially fixedly arranged to the middle position of the lower end of the forearm (401) away from the cross beam (307) through a connecting plate; the tape sealing machine (5) is fixedly arranged at the middle position of one end of the carton (6) near the middle position of the cross beam (307) away from the carton (6).

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