A crease pre-compression device for express delivery boxes

Abstract

This utility model provides a crease pre-compression device for express boxes, including: a feeding assembly, on the front side of which is installed a bending assembly for pre-compressing and folding the cut raw cardboard; the bending assembly includes a frame, and a gantry frame is fixed in the middle of the frame for installing an inner support component for negative pressure adsorption and positioning support inside the pre-compressed and folded raw cardboard. Compared with the prior art, this utility model has the following advantages: by setting the bending assembly, the problem of limited production efficiency caused by the difficulty of conventional pre-compression equipment to meet the rapid switching needs of different specifications of express boxes is solved; the second negative pressure suction cup on the bottom support component can assist the first negative pressure suction cup in fixing the entire pre-compressed raw cardboard, so that the entire raw cardboard remains in a stable state during the pre-compression process and will not easily shift, which helps to improve the accuracy of pre-compression.

Description

Technical Field

[0001] This utility model belongs to the field of crease pre-compression technology, and specifically relates to a crease pre-compression device for express delivery boxes. Background Technology

[0002] Existing crease pre-compression devices for express delivery boxes have several significant drawbacks in practical applications, primarily manifested in low crease accuracy, poor adaptability, and low efficiency. Due to the diversity of express delivery box materials and thicknesses, existing pre-compression devices often struggle to precisely adjust pressure and crease position, resulting in creases that are too deep or too shallow, or even causing cardboard breakage or failure to form effective creases. These defects typically stem from limitations in the equipment's structural design and a lack of adaptive adjustment capabilities to different material properties.

[0003] To address these issues, conventional methods typically involve adding mechanical adjustment components or introducing pneumatic or hydraulic systems to improve control precision. However, these improvements often lead to more complex equipment structures and significantly increased manufacturing and maintenance costs. Furthermore, even with automated adjustment methods, it remains difficult to simultaneously meet the demands of rapid switching between different sized courier boxes, limiting improvements in production efficiency. Therefore, we aim to design a novel courier box crease pre-compression device to solve this problem. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a crease pre-compression device for express boxes, so as to solve the problems mentioned in the background technology.

[0005] This utility model is achieved through the following technical solution: a crease pre-compression device for express box, comprising: a feeding component, wherein a bending component for pre-compressing and folding the cut raw paperboard is installed on the front side of the feeding component, the bending component includes a frame, and a gantry frame is fixed in the middle of the frame for installing an inner support component for negative pressure adsorption and positioning support inside the pre-compressed and folded raw paperboard. On the upper left front side, right front side, left rear side, and right rear side of the frame, a compression and folding component for limiting and bending the raw material paperboard is slidably installed. On the upper middle of the frame, a bottom support component is slidably installed to support the bottom part of the raw material paperboard and to pre-press the front and rear parts. On the middle left and right sides of the frame, a folding component for flipping and folding the side panels of the raw material paperboard is hinged.

[0006] In a preferred embodiment, the inner support includes a lifting cylinder, the top of which is fixedly connected to the middle of the top of the gantry frame, and a mounting plate is fixed to its lower end. The lower left and lower right sides of the mounting plate are respectively slidably mounted with two rectangular frames that slide in the front-back direction through a cylinder block. Each of the rectangular frames is equipped with multiple vertically distributed negative pressure suction cups on its outer side. The outer ends of the suction cups are flush with the outer side of the rectangular frame. In actual use, the inner support is used to press down the raw material cardboard and support and fix the interior of the front and rear sides after folding, preventing it from shifting during the subsequent folding and pre-pressing process.

[0007] In a preferred embodiment, the four extrusion folding components are arranged in a rectangular structure, with a folding space between the two front extrusion folding components and the two rear extrusion folding components for obtaining the raw material paperboard. Each extrusion folding component includes a movable seat, the bottom of which is slidably connected to the upper side of the frame via a cylinder block, a slider, and a slide rail, and the upper ends of the four movable seats are flush.

[0008] In a preferred embodiment, each of the movable seats has an installation frame installed inside its outer side, and a cylinder block is installed inside the frame to push the propulsion cylinder away from the movable seat.

[0009] In a preferred embodiment, a fixing frame is fixed to one end of the propulsion cylinder near the flipping component. The outer side of the fixing frame is hinged to one end of the bending cylinder. A folding plate is hinged to the inside of the fixing frame near the folding space, and its outer side is hinged to the other end of the bending cylinder.

[0010] In a preferred embodiment, the bottom support includes a base, and slide blocks are respectively provided on the left and right sides of the base. The base is slidably connected to the frame through the two slide blocks and slide rails installed on the left and right sides of the middle of the frame. A strip-shaped through hole is formed in the middle of the frame in the front-back direction to facilitate the back-and-forth movement of the bottom support.

[0011] In a preferred embodiment, a support plate is fixed on the upper side of the base by a cylinder block and a telescopic guide column. A double-headed synchronous cylinder is installed on the lower left and lower right sides of the support plate, and a limiting plate is fixed at both ends of the cylinder. The height of the limiting plate is greater than the height of the support plate. The front and rear sides of the support plate are respectively provided with multiple equally spaced negative pressure suction cups for fixing the bottom position of the raw material paperboard.

[0012] In a preferred embodiment, the middle left and right sides of the strip-shaped through hole are respectively provided with clearance through holes for installing two folding components. The folding component includes a folding cylinder, the lower end of which is hinged to the bottom of the middle of the frame, and the upper end is hinged to the inner part of the bottom of the folding plate for flipping the ear plates on both sides of the paperboard material to facilitate the alignment and pre-pressing of the extrusion folding component. The inner end of the folding plate is hinged to the inner wall of the clearance through hole reserved on the frame. In actual use, the folding component can help to flip the ear plates on the left and right sides of the paperboard material, thereby enabling the extrusion folding component to further fold and pre-press it, ensuring the quality and effect of pre-pressing.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are as follows: 1. By setting a bending component, under the coordinated action of four movable seats and four rectangular frames, the middle part of the raw material cardboard gradually moves towards the bottom of the folding space, and the front and rear sides of the raw material cardboard gradually flip and fold. When the bottom of the four rectangular frames pushes the middle part of the raw material cardboard to abut against the upper side of the support plate, the first step of pre-pressing of the raw material cardboard is completed. Then, the folding cylinder on the folding component is activated to drive the folding plate to fold, thereby causing the left and right ear plates of the raw material cardboard to flip and move closer to the sides of the front and rear parts of the raw material cardboard. Then, the pushing cylinder on the four movable seats is activated to fix the frame. The device is pushed towards the ear plate, and then the bending cylinder is activated to drive the folding plate to abut against the ear plate. Subsequently, the cylinder block three located inside the mounting frame is activated to drive the folding plate to further pre-press the ear plate, making the crease at the connection between the bottom of the ear plate and the middle of the raw material cardboard clearer. At this point, the pre-pressing of the entire raw material cardboard is completed. Then, the folding component and the squeezing folding component are reset simultaneously, and then the inner support component is reset. Finally, the limiting plate on the bottom support component moves towards each other to fix the pre-pressed raw material cardboard and drive the pre-pressed cardboard to move forward. This solves the problem that conventional pre-pressing equipment cannot meet the needs of rapid switching between different specifications of express boxes, which limits the improvement of production efficiency.

[0014] 2. By setting negative pressure suction cup 1 and negative pressure suction cup 2 on the inner support and bottom support, the multiple negative pressure suction cups 1 on the inner support can adsorb the inner walls of the center-folded parts on the front and rear sides of the raw material paperboard, so that these two parts can move down stably and keep the raw material paperboard stable during the subsequent pre-pressing process. The negative pressure suction cup 2 on the bottom support can assist the negative pressure suction cup 1 in fixing the entire pre-pressed raw material paperboard, and when the pre-pressed raw material paperboard is conveyed in the subsequent process, it can work with the limiting plate to keep the pre-pressed raw material paperboard moving forward stably. At the same time, the entire raw material paperboard is kept in a stable state during the pre-pressing process and will not easily deviate, which helps to improve the accuracy of pre-pressing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a crease pre-compression device for express delivery boxes according to this utility model.

[0017] Figure 2 This is a schematic diagram of the bending component of a crease pre-compression device for express delivery boxes according to the present invention, which bends a cardboard box.

[0018] Figure 3 This is a schematic diagram of the bending component structure of a crease pre-compression device for express delivery boxes according to this utility model.

[0019] Figure 4 This is a schematic diagram of the bottom support and the compression folding component of a crease pre-compression device for a courier box according to the present invention.

[0020] Figure 5 This is a schematic diagram of the internal structure of the extrusion folding component of the crease pre-compression device for a courier box according to this utility model.

[0021] In the diagram, 100 represents the feeding assembly. 200-Bending component, 210-Frame, 220-Gantry, 230-Inner support component, 240-Extrusion folding component, 241-Mounting frame, 242-Push cylinder, 243-Fixed frame, 244-Bending cylinder, 250-Bottom support component, 251-Base, 252-Limit plate, 253-Negative pressure suction cup II, 260-Folding component, 261-Folding cylinder, 262-Folding plate. Detailed Implementation

[0022] 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.

[0023] As the first embodiment of this utility model: Please see Figures 1 to 5A crease pre-compression device for express boxes includes: a feeding component 100, a bending component 200 for pre-compressing and folding the cut raw paperboard installed on the front side of the feeding component 100, the bending component 200 including a frame 210, a gantry frame 220 fixed in the middle of the frame 210 for installing an inner support component 230 for negative pressure adsorption and positioning support inside the pre-compressed and folded raw paperboard; On the upper left front side, right front side, left rear side and right rear side of the frame 210, a compression folding component 210 for limiting and bending the raw material paperboard is slidably installed. On the upper middle of the frame 210, a bottom support component 250 is slidably installed to support the bottom part of the raw material paperboard and to pre-press the front and rear parts. On the middle left and right sides of the frame 210, a folding component 260 for flipping and folding the side panels of the raw material paperboard is hinged.

[0024] The inner support 230 includes a lifting cylinder. The top of the lifting cylinder is fixedly connected to the middle of the top of the gantry 220. A mounting plate is fixed to its lower end. Two rectangular frames that slide in the front-back direction are slidably mounted on the lower left and lower right sides of the mounting plate through a cylinder block. Each rectangular frame has multiple vertically distributed negative pressure suction cups installed on its outer side. The outer ends of the suction cups are flush with the outer side of the rectangular frame. In actual use, the inner support 230 is used to press down the raw material cardboard and support and fix the interior of the front and rear sides after folding, preventing it from shifting during the subsequent folding and pre-pressing process.

[0025] The four extrusion folding parts 210 are arranged in a rectangular structure. There is a folding space between the two extrusion folding parts 210 on the front side and the two extrusion folding parts 210 on the rear side for obtaining the raw material cardboard. Each extrusion folding part 210 includes a movable seat. The bottom of the movable seat is slidably connected to the upper side of the frame 210 through a cylinder block, a slider and a slide rail. The upper ends of the four movable seats are flush.

[0026] Each movable seat has an installation frame 241 installed on its outer side, and a cylinder block 3 is installed inside the frame to push the propulsion cylinder 242 away from the movable seat.

[0027] A fixing frame 243 is fixed to one end of the propulsion cylinder 242 near the flipping part. The outer side of the fixing frame 243 is hinged to one end of the bending cylinder 244. A folding plate is hinged to the inside of the fixing frame 243 near the folding space position, and its outer side is hinged to the other end of the bending cylinder 244.

[0028] The bottom support 250 includes a base 251. The base 251 has slide blocks on its left and right sides. It is slidably connected to the frame 210 through the two slide blocks and the slide rails installed on the left and right sides of the middle of the frame 210. The middle of the frame 210 has a strip-shaped through hole that runs downward in the front-back direction to facilitate the back-and-forth movement of the bottom support 250.

[0029] Specifically, by setting up the bending component 200, in actual use, a cut piece of raw cardboard is conveyed through the feeding component 100 to the upper side of four rectangularly arranged compression and folding components 210 (see the instruction manual). Figure 2 and appendix Figure 3 As can be seen, the four squeezing and folding parts 210 have limit blocks at the rectangular corners on their upper sides to limit the raw paperboard. Then, the cylinder block 2 at the lower end of the four squeezing and folding parts 210 is activated to drive the movable seats on the left and right sides to move towards each other, thereby aligning the raw paperboard and avoiding the problem of tilting and deflection before folding and pre-pressing, which would reduce the folding accuracy. After aligning the raw paperboard, the inner support part 230 on the gantry frame 220 is activated, and the lifting cylinder on it drives the four rectangular frames on the lower side to move down. Before the four rectangular frames move down, according to the preset program, the cylinder block 1 on the mounting plate is activated, thereby driving the two rectangular frames on the left and right sides of the mounting plate to expand or contract in the front and back direction to meet the width reservation requirements at the bottom of the paper box. Then, driven by the lifting cylinder, the lower ends of the four rectangular frames simultaneously press down on the middle position of the raw material cardboard, that is, the upper part of the folding space between the four movable seats. Under the coordinated action of the four movable seats and the four rectangular frames, the middle part of the raw material cardboard gradually moves towards the bottom of the folding space, and the front and back sides of the raw material cardboard gradually flip and fold. When the bottom of the four rectangular frames pushes the middle part of the raw material cardboard to abut against the upper side of the support plate, the first step of pre-pressing of the raw material cardboard is completed. The left and right ear plates of the raw material cardboard fall on the folding plates 262 of the two folding parts 260 respectively. Then, the negative pressure suction cups 1 on the four rectangular frames and the multiple negative pressure suction cups 253 on the support plate are activated to fix the raw material cardboard after the first step of folding and pre-pressing is completed. Then, the folding cylinder 261 on the folding component 260 is activated, driving the folding plate 262 to fold, thereby causing the ear plates on the left and right sides of the raw material cardboard to flip and move closer to the sides of the front and rear parts of the raw material cardboard. Then, the pushing cylinders 242 on the four movable seats are activated to push the fixing frame 243 towards the ear plates. Then, the bending cylinder 244 is activated to drive the folding plate to abut against the ear plates. Then, the cylinder block three located inside the mounting frame 241 is activated to drive the folding plate to further pre-press the ear plates, making the crease at the connection between the bottom of the ear plates and the middle of the raw material cardboard clearer. At this point, the pre-pressing of the entire raw material cardboard is completed. Then, the folding component 260 and the squeezing folding component 210 are reset simultaneously, and then the inner support component 230 is reset. Finally, the limiting plate 252 on the bottom support component 250 moves towards each other to fix the pre-pressed raw material cardboard and drive the pre-pressed cardboard to move forward. This solves the problem that conventional pre-pressing equipment cannot meet the needs of rapid switching of different specifications of express boxes, which limits the improvement of production efficiency.

[0030] As a second embodiment of this utility model: Please see Figures 1 to 4 A support plate is fixed on the upper side of the base 251 by cylinder block four and telescopic guide column. A double-headed synchronous cylinder is installed on the lower left and lower right sides of the support plate, and a limit plate 252 is fixed at both ends of the cylinder. The height of the limiting plate 252 is greater than the height of the support plate. Multiple equally spaced negative pressure suction cups 253 are provided on the front and rear sides of the support plate to fix the bottom position of the raw material paperboard.

[0031] The middle left and right sides of the strip-shaped through hole are respectively provided with clearance through holes for installing two folding components 260. The folding component 260 includes a folding cylinder 261. The lower end of the folding cylinder 261 is hinged to the bottom of the middle of the frame 210, and its upper end is hinged to the inner part of the bottom of the folding plate 262 for flipping the ear plates on both sides of the paperboard material to facilitate the alignment and pre-pressing of the extrusion folding component 210. The inner end of the folding plate 262 is hinged to the inner wall of the clearance through hole reserved on the frame 210. In actual use, the setting of the folding component 260 can help to flip the ear plates on the left and right sides of the paperboard material, so that the extrusion folding component 210 can further fold and pre-press it, ensuring the quality and effect of pre-pressing.

[0032] Based on the first embodiment described above, further, by providing negative pressure suction cup 1 and negative pressure suction cup 253 on the inner support member 230 and the bottom support member 250, in actual use, when the raw material paperboard is pre-pressed in the first step, the multiple negative pressure suction cups 1 on the inner support member 230 can adsorb the inner walls of the folded parts on the front and rear sides of the raw material paperboard, so that these two parts can move down stably, and in the subsequent pre-pressing process, the raw material paperboard remains stable. The negative pressure suction cup 253 on the bottom support member 250 can assist the negative pressure suction cup 1 in fixing the entire pre-pressed raw material paperboard, and in the subsequent conveying of the pre-pressed raw material paperboard, it can cooperate with the limiting plate 252 to keep the pre-pressed raw material paperboard moving forward stably, so that the entire raw material paperboard is always in a stable state during the pre-pressing process and will not easily deviate, which helps to improve the accuracy of pre-pressing.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A crease pre-compression device for express delivery boxes, comprising: The feeding assembly (100) is characterized in that a bending assembly (200) for pre-pressing and folding the cut raw paperboard is installed on the front side of the feeding assembly (100). The bending assembly (200) includes a frame (210). A gantry frame (220) is fixed in the middle of the frame (210) for installing an inner support member (230) for negative pressure adsorption and positioning support inside the pre-pressed and folded raw paperboard. The upper left front side, right front side, left rear side and right rear side of the frame (210) are each slidably installed with a compression folding component (240) for limiting and bending the raw material paperboard. The upper middle of the frame (210) is slidably installed with a bottom support component (250) for supporting the bottom part of the raw material paperboard and pre-pressing the front and rear parts. The middle left and right sides of the frame (210) are each hinged with a folding component (260) for flipping and folding the side panels of the raw material paperboard.

2. The crease pre-compression device for a courier box as described in claim 1, characterized in that: The inner support member (230) includes a lifting cylinder. The top of the lifting cylinder is fixedly connected to the middle of the top of the gantry (220). A mounting plate is fixed at its lower end. Two rectangular frames that slide in the front-back direction are respectively mounted on the lower left and lower right sides of the mounting plate through a cylinder block. Each of the rectangular frames is equipped with a plurality of vertically distributed negative pressure suction cups, the outer ends of which are flush with the outer surface of the rectangular frame.

3. The crease pre-compression device for a courier box as described in claim 1, characterized in that: The four extrusion folding parts (240) are arranged in a rectangular structure. A folding space is provided between the two front extrusion folding parts (240) and the two rear extrusion folding parts (240) for obtaining the raw material paperboard. The extrusion folding parts (240) include movable seats. The bottom of the movable seats is slidably connected to the upper side of the frame (210) through a cylinder block, a slider and a slide rail. The upper ends of the four movable seats are flush.

4. The crease pre-compression device for a courier box as described in claim 3, characterized in that: Each of the movable seats has an installation frame (241) installed on its outer side, and a cylinder block three is installed inside the frame to push the propulsion cylinder (242) away from the movable seat.

5. The crease pre-compression device for a courier box as described in claim 4, characterized in that: The propulsion cylinder (242) is fixed with a fixing frame (243) near the flipping part. The outer side of the fixing frame (243) is hinged to one end of the bending cylinder (244). The fixing frame (243) is hinged to the inside of the folding space position with a folding plate, and its outer side is hinged to the other end of the bending cylinder (244).

6. The crease pre-compression device for a courier box as described in claim 1, characterized in that: The bottom support (250) includes a base (251), and slide blocks are respectively provided on the left and right sides of the base (251). It is slidably connected to the frame (210) through the two slide blocks and the slide rails installed on the left and right sides of the middle of the frame (210). The middle of the frame (210) forms a strip-shaped through hole in the front-back direction to facilitate the back-and-forth movement of the bottom support (250).

7. The crease pre-compression device for a courier box as described in claim 6, characterized in that: The base (251) has a support plate fixed on its upper side by cylinder block four and telescopic guide column. A double-headed synchronous cylinder is installed on the lower left and lower right sides of the support plate, and a limiting plate (252) is fixed at both ends of the cylinder. The height of the limiting plate (252) is greater than the height of the support plate. The front and rear sides of the support plate are provided with multiple equally spaced negative pressure suction cups (253) for fixing the bottom position of the raw material paperboard.

8. The crease pre-compression device for a courier box as described in claim 6, characterized in that: The middle left and right sides of the strip-shaped through hole are respectively provided with clearance through holes for installing two folding parts (260). The folding part (260) includes a folding cylinder (261). The lower end of the folding cylinder (261) is hinged to the bottom of the middle of the frame (210), and its upper end is hinged to the inner part of the bottom of the folding plate (262) for flipping the ear plates on both sides of the paperboard material to facilitate the alignment and pre-pressing of the folding part (240). The inner end of the folding plate (262) is hinged to the inner wall of the clearance through hole reserved on the frame (210).

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