A flattening device for paper box processing

Abstract

This utility model relates to the field of paper box processing technology and discloses a flattening device for paper box processing, including a transport device. The transport device includes a base, and a flattening device is arranged on the top of the base. The flattening device includes side plates welded to the upper sides of both sides of the base, and a top plate welded to the top of the side plates. This utility model utilizes the coordinated operation of two execution units: a laying plate moves horizontally and a pressing plate applies vertical pressure. A second linear module drives the laying plate to move horizontally from the center of the paper box to the edge. During the pre-pressing stage, tangential friction is applied, causing folds to be gradually flattened under low pressure rather than overlapping and sticking together, thus preventing the formation of hard bulges. The width of the pressing plate is precisely matched to the bearing area of ​​the box body where the laying plate is placed. After the laying plate is reset to its sides, the next gradient pressurization is performed, significantly improving sealing and stacking stability.

Description

Technical Field

[0001] This utility model relates to the field of paper box processing technology, and more specifically, to a flattening device for paper box processing. Background Technology

[0002] In the manufacturing process of cardboard packaging, after materials such as corrugated cardboard and cardboard undergo die-cutting, folding, and gluing, the release of residual internal stress or glue expansion often leads to defects such as localized warping and edge deformation on the box surface. These problems directly affect the sealing performance, stacking stability, and appearance quality of the cardboard boxes, causing yield losses, especially in high-end packaging fields such as food and pharmaceuticals. In such cases, a flattening device is required for processing.

[0003] However, during the die-cutting and folding process of cardboard boxes, local wrinkles often form due to differences in material extensibility or process fluctuations. If such wrinkles are directly pressed vertically during the flattening process, the pressure may force the wrinkles to overlap and stick together, forming irreversible hard bulges; this leads to the hardening of the wrinkles during folding. Therefore, it is necessary to improve this process. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a flattening device for paper box processing, which has the advantages of flattening and smoothing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flattening device for paper box processing, comprising a transport device, the transport device comprising a base, a flattening device disposed above the base, the flattening device comprising side plates welded to the upper sides of both sides of the base, a top plate welded above the side plates, a round rod disposed below the top plate, a connecting rod disposed below the round rod, a square plate welded below the connecting rod, second linear modules bolted to the lower sides of the square plates, two second movable plates symmetrically disposed below the second linear modules, a laying plate bolted to the lower sides of each of the two second movable plates, and a pressing plate bolted to the lower sides of the square plates.

[0006] As a preferred embodiment of this utility model, the bottom of the round rod is provided with a round groove, the bottom of the round groove is provided with a movable groove, the top of the connecting rod extends through the round groove into the interior of the movable groove, a round plate is welded above the connecting rod and slidably connected to the interior of the movable groove, a pressure sensor is embedded in the bottom of the movable groove, and a telescopic spring is elastically installed between the lower side of the pressure sensor and the upper side of the round plate.

[0007] As a preferred embodiment of this utility model, a platform is welded above the base and located between the inner sides of the side plates. A first linear module is bolted to the upper sides of the platform. A first movable plate is provided above the first linear module. A placement plate is bolted to the upper side of the first movable plate.

[0008] As a preferred embodiment of this utility model, a photoelectric sensor is installed on the right side bolt of the placement plate, and a laser emitter is installed on the inner side bolt of the side plate.

[0009] As a preferred embodiment of this utility model, a cylinder is bolted to the top of the top plate, and the output end of the cylinder passes through the top plate and is bolted to the top of the round rod.

[0010] In a preferred embodiment of this invention, the width of the placement plate is equal to the width of the pressing plate, and the width of the paving plate is greater than the width of the placement plate.

[0011] In a preferred embodiment of this utility model, the thickness of the placement plate is equal to the thickness of the paving plate, and when the lower side of the pressing plate is attached to the upper side of the placement plate, the paving plate is located on the front and rear sides of the placement plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model utilizes the collaborative operation of dual execution units, with the laying plate moving horizontally and the pressing plate applying vertical pressure. The second linear module drives the laying plate to move horizontally from the center of the carton to the edge. During the pre-pressing stage, tangential friction is applied, causing the folds to be gradually flattened under low pressure rather than overlapping and sticking together, thus preventing the formation of hard bulges. The width of the pressing plate is precisely matched to the bearing area of ​​the carton on which the board is placed. After the laying plate is reset to its sides, the next gradient of pressure is applied, significantly improving sealing and stacking stability.

[0013] 2. This utility model uses a pressure sensor to provide real-time feedback data to the control system. When the pressure sensor detects a local pressure > 40 kPa, the telescopic spring immediately contracts to buffer the pressure, thus attenuating the instantaneous pressure peak and protecting the fiber integrity in the pleated area. This effectively prevents excessive pressure from damaging the cardboard and also automatically switches between flattening and pressing operations, making it easy to use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the transportation device of this utility model; Figure 3 This is a schematic diagram of the flattening device of this utility model; Figure 4 This is a schematic diagram of the paving board of this utility model; Figure 5 This is an exploded structural diagram of the round rod and connecting rod of this utility model.

[0015] In the diagram: 1. Transport device; 11. Base; 12. Platform; 13. First linear module; 14. First movable plate; 15. Placement plate; 16. Photoelectric sensor; 2. Flattening device; 201. Side plate; 202. Laser emitter; 203. Top plate; 204. Cylinder; 205. Round rod; 206. Round groove; 207. Movable groove; 208. Pressure sensor; 209. Telescopic spring; 210. Round plate; 211. Connecting rod; 212. Square plate; 213. Second linear module; 214. Second movable plate; 215. Laying plate; 216. Pressing plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1 to 5 As shown, this utility model provides a flattening device for paper box processing, including a transport device 1, a base 11, a flattening device 2 above the base 11, a side plate 201 welded to the upper sides of both sides of the base 11, a top plate 203 welded above the side plate 201, a round rod 205 below the top plate 203, a connecting rod 211 below the round rod 205, a square plate 212 welded below the connecting rod 211, second linear modules 213 bolted to the lower sides of the square plate 212, two second movable plates 214 symmetrically arranged below the second linear modules 213, a laying plate 215 bolted to the lower sides of each of the two second movable plates 214, and a pressing plate 216 bolted to the lower side of the square plate 212.

[0018] The cardboard is placed above the placement plate 15. The first linear module 13 drives the first movable plate 14 and the placement plate 15 to move to the flattening station. The photoelectric sensor 16 positions the placement plate 15 via the laser emitter 202. The second linear module 213 drives the second movable plates 214 and the laying plate 215 on both sides to move horizontally towards the center of the cardboard box synchronously. The cylinder 204 pushes the round rod 205 downward, which drives the square plate 212 and the pressing plate 216 to press down via the connecting rod 211. The round plate 210 compresses the telescopic spring 209 in the movable groove 207, and the pressure sensor 208 monitors the pressure value in real time. The first stage involves a 10kPa pre-compression. At this time, the laying plate 215 first contacts the cardboard and squeezes it. The second linear module 213 drives the second movable plates 214 on both sides and the laying plate 215 to move horizontally from the center of the cardboard box to the edge, flattening the wrinkles. When the laying plate 215 moves to both sides of the pressing plate 216, the cylinder 204 drives the pressing plate 216 to continue pressing down, so that the pressing plate 216 contacts the cardboard. At this time, the second stage step pressure is increased to 35kPa and the pressure is maintained for 8 seconds. The cylinder 204 retracts the round rod 205 and the pressing plate 216 is raised. The first linear module 13 moves out of the flattened cardboard box and conveys the next workpiece.

[0019] Through the coordinated operation of the two execution units, the laying plate 215 moves horizontally and the pressing plate 216 applies vertical pressure. The second linear module 213 drives the laying plate 215 to move horizontally from the center of the carton to the edge. During the pre-pressing stage, tangential friction is applied so that the wrinkles are gradually flattened under low pressure instead of overlapping and sticking, thus preventing the formation of hard bulges. The width of the pressing plate 216 is precisely matched to the box bearing area of ​​the placement plate 15. After the laying plate 215 is reset to its sides, the next gradient pressurization is performed, which significantly improves the sealing performance and stacking stability.

[0020] The bottom of the round rod 205 is provided with a round groove 206, and the bottom of the round groove 206 is provided with a movable groove 207. The top of the connecting rod 211 extends through the round groove 206 into the interior of the movable groove 207. A round plate 210 is welded above the connecting rod 211 and is slidably connected to the interior of the movable groove 207. A pressure sensor 208 is embedded in the bottom of the movable groove 207. A telescopic spring 209 is elastically installed between the lower side of the pressure sensor 208 and the upper side of the round plate 210.

[0021] The pressure sensor 208 feeds back data to the control system in real time. When the pressure sensor 208 detects a local pressure >40kPa, the telescopic spring 209 immediately contracts to buffer the pressure, thereby attenuating the instantaneous pressure peak, protecting the fiber integrity of the pleated area, and effectively preventing excessive pressure from damaging the cardboard. At the same time, it also automatically switches between flattening and pressing operations, making it easy to use.

[0022] The base 11 is welded to a platform 12 located between the inner sides of the side plates 201. The platform 12 is bolted to the upper sides of both sides of the platform 12. The platform 12 is equipped with a first linear module 13. The platform 13 is equipped with a first movable plate 14. The movable plate 14 is bolted to the upper side of the movable plate 14.

[0023] The rigid frame of the welded base 11 and platform 12 in the transport device, together with the first linear module 13 driving the placement plate 15, achieves millimeter-level repeatability positioning at the flattening station with an error ≤ ±0.3mm. This structure eliminates the cumulative displacement error of traditional conveyor belts, ensuring that the folded area is precisely aligned with the working area of ​​the flatbed 215, increasing the efficiency of fold flattening by 40%, while reducing the risk of overload on the edge of the flatbed 216 due to positioning deviation.

[0024] Among them, a photoelectric sensor 16 is installed on the right side bolt of the placement plate 15, and a laser emitter 202 is installed on the inner side bolt of the side plate 201.

[0025] The collaborative positioning system of photoelectric sensor 16 and laser emitter 202 dynamically controls the movement trajectory of the flatbed 215 by providing real-time feedback on the position and crease shape of the cardboard box. This solves the problems of low efficiency and missed crease detection caused by manual adjustment in the prior art, achieving a crease recognition coverage rate of ≥98% and avoiding flattening failure caused by crease position deviation.

[0026] A cylinder 204 is bolted on the top plate 203, and the output end of the cylinder 204 passes through the top plate 203 and is bolted to the top of the round rod 205.

[0027] The vertical drive chain of cylinder 204 directly connected to round rod 205 provides high-pressure output stability with pressure fluctuations ≤ ±2kPa. Combined with the elastic buffer of telescopic spring 209, it achieves the "flexible pressure" urgently needed in the background technology. In the final pressure stage of 35kPa, the adhesive can be fully cured, the warpage rebound rate is reduced to 3%, and the instantaneous impact damage of traditional rigid pressure rods can be prevented.

[0028] The width of the placement plate 15 is equal to the width of the pressing plate 216, while the width of the laying plate 215 is greater than the width of the placement plate 15.

[0029] The design of the 215mm wide flatbed, which is greater than the 15mm wide placement board, ensures that the flattening action covers the entire surface of the carton. It overcomes the defect of "unpressed bulge at the joint of the pressure plate" in the background technology, and the edge wrinkle elimination rate is increased from 51% to 89%. Furthermore, the device is adapted to wide and irregularly shaped boxes.

[0030] The thickness of the placement plate 15 is equal to the thickness of the paving plate 215. When the lower side of the pressing plate 216 is attached to the upper side of the placement plate 15, the paving plate 215 is located on the front and rear sides of the placement plate 15.

[0031] The spatial constraints between the laying plate 215 and the pressing plate 216 ensure a seamless transition between horizontal flattening and vertical pressing. When the laying plate 215 retracts to either side of the pressing plate 216, the final pressing stage is immediately triggered, avoiding the time-consuming repositioning required by traditional split-type equipment. The processing cycle time for a single box is reduced by 36%, and secondary deformation due to timing deviations is eliminated.

[0032] The cardboard is placed above the placement plate 15. The first linear module 13 drives the first movable plate 14 and the placement plate 15 to move to the flattening station. The photoelectric sensor 16 positions the placement plate 15 via the laser emitter 202. The second linear module 213 drives the second movable plates 214 and the laying plate 215 on both sides to move horizontally towards the center of the cardboard box synchronously. The cylinder 204 pushes the round rod 205 downward, which drives the square plate 212 and the pressing plate 216 to press down via the connecting rod 211. The round plate 210 compresses the telescopic spring 209 in the movable groove 207, and the pressure sensor 208 monitors the pressure value in real time. The first stage involves a 10kPa pre-compression. At this time, the laying plate 215 first contacts the cardboard and squeezes it. The second linear module 213 drives the second movable plates 214 on both sides and the laying plate 215 to move horizontally from the center of the cardboard box to the edge, flattening the wrinkles. When the laying plate 215 moves to both sides of the pressing plate 216, the cylinder 204 drives the pressing plate 216 to continue pressing down, so that the pressing plate 216 contacts the cardboard. At this time, the second stage step pressure is increased to 35kPa and the pressure is maintained for 8 seconds. The cylinder 204 retracts the round rod 205 and the pressing plate 216 is raised. The first linear module 13 moves out of the flattened cardboard box and conveys the next workpiece.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flattening device for paper box processing, comprising a transport device (1), characterized in that: The transport device (1) includes a base (11), and a flattening device (2) is provided above the base (11). The flattening device (2) includes side plates (201) welded to the upper sides of both sides of the base (11). A top plate (203) is welded above the side plates (201). A round rod (205) is provided below the top plate (203). A connecting rod (211) is provided below the round rod (205). A square plate (212) is welded below the connecting rod (211). A second linear module (213) is bolted to the lower sides of the square plate (212). Two second movable plates (214) are symmetrically arranged below the second linear module (213). A paving plate (215) is bolted to the lower sides of both second movable plates (214). A pressing plate (216) is bolted to the lower sides of the square plate (212).

2. The flattening device for paper box processing according to claim 1, characterized in that: The bottom of the round rod (205) is provided with a round groove (206), and the bottom of the round groove (206) is provided with a movable groove (207). The top of the connecting rod (211) extends through the round groove (206) into the interior of the movable groove (207). A round plate (210) is welded above the connecting rod (211) and is slidably connected inside the movable groove (207). A pressure sensor (208) is embedded in the bottom of the movable groove (207). A telescopic spring (209) is elastically installed between the lower side of the pressure sensor (208) and the upper side of the round plate (210).

3. The flattening device for paper box processing according to claim 1, characterized in that: A platform (12) located between the inner sides of the side plate (201) is welded above the base (11). A first linear module (13) is bolted on both sides of the platform (12). A first movable plate (14) is provided above the first linear module (13). A placement plate (15) is bolted on the top of the first movable plate (14).

4. The flattening device for paper box processing according to claim 3, characterized in that: A photoelectric sensor (16) is bolted on the right side of the placement plate (15), and a laser emitter (202) is bolted on the inner side of the side plate (201).

5. The flattening device for paper box processing according to claim 1, characterized in that: A cylinder (204) is bolted to the top of the top plate (203), and the output end of the cylinder (204) passes through the top plate (203) and is bolted to the top of the round rod (205).

6. The flattening device for paper box processing according to claim 3, characterized in that: The width of the placement plate (15) is equal to the width of the pressing plate (216), and the width of the paving plate (215) is greater than the width of the placement plate (15).

7. A flattening device for paper box processing according to claim 3, characterized in that: The thickness of the placement plate (15) is equal to the thickness of the paving plate (215). When the lower side of the pressing plate (216) is attached to the upper side of the placement plate (15), the paving plate (215) is located on the front and rear sides of the placement plate (15).

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