Reinforcing structure for biodegradable starch-based foam packaging boxes

Abstract

The utility model relates to packing box technical field, concretely, it relates to the reinforcing structure of biodegradable starch -based foam packing box, including packing box body, packing box body is provided with reinforcing structure in, reinforcing structure includes four L type boards of matrix type arrangement, L type board is pasted packing box body inside corner, is provided with control panel between two adjacent L type boards, two internal thread sleeves are symmetrically connected in the middle part of control panel and rotate, the rotating direction of two internal thread sleeves is opposite, the other end of internal thread sleeve extends to the outside of control panel, the internal thread sleeve is connected with screw rod in internal thread, the other end of screw rod is fixed on adjacent L type board. In the utility model, the internal thread sleeve of two rotating directions is opposite synchronous rotation, adjusts the telescopic length of screw rod, realizes the flexible adjustment of L type board supporting force, can according to the size of packing box, enhances the extrusion resistance and impact resistance of box body corner, improves the protection effect.

Description

Technical Field

[0001] This utility model relates to the field of packaging box technology, and more specifically, to the reinforcing structure of biodegradable starch-based foam packaging boxes. Background Technology

[0002] Currently, biodegradable starch-based foam materials are increasingly widely used in the packaging field due to their environmentally friendly and biodegradable characteristics; however, these materials themselves have relatively weak strength and impact resistance, and the packaging boxes made from them are prone to deformation and breakage when transporting or loading heavy objects, resulting in damage to the contents.

[0003] The utility model patent with announcement number CN217075167U discloses a paper packaging box with a reinforced structure, including a box body, a reinforcing seat at the bottom of the box body, a first bracket on the inner side of the reinforcing seat, multiple sets of engaging parts on the outer side of the reinforcing seat, multiple sets of outer reinforcing plates at the top of the reinforcing seat, and a second bracket on the inner side of the outer reinforcing plates.

[0004] Although this utility model makes the bottom corners less susceptible to damage from bumps, all the structures are fixedly connected and can only be adapted to packaging boxes of a certain size. In actual use, there are packaging boxes of various sizes. When the size of the packaging box changes, it needs to be customized again, which is inflexible and difficult to meet the diverse market demands. Utility Model Content

[0005] The purpose of this invention is to provide a reinforced structure for biodegradable starch-based foam packaging boxes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A reinforcing structure for a biodegradable starch-based foam packaging box includes a packaging box body made of biodegradable starch-based foam. The packaging box body contains a reinforcing structure comprising four L-shaped plates arranged in a matrix. The L-shaped plates fit against the inner corners of the packaging box body. A control plate is positioned between two adjacent L-shaped plates. Two internally threaded sleeves are symmetrically rotatably connected to the center of the control plate. The two internally threaded sleeves rotate in opposite directions. The other end of each internally threaded sleeve extends beyond the control plate. A lead screw is internally threaded onto each internally threaded sleeve, and the other end of the lead screw is fixed to an adjacent L-shaped plate.

[0008] Preferably, a drive shaft is rotatably connected inside the control board, and a drive gear is fixed at the bottom end of the drive shaft.

[0009] Preferably, a driven gear is fixed at one end of the internal threaded sleeve located inside the control plate, and both driven gears mesh perpendicularly with the driving gear.

[0010] Preferably, a knob is fixed after the top of the drive shaft extends to the control plate, and several protrusions are regularly arranged on the outer wall of the knob.

[0011] These three features, through the linkage design of the drive shaft and drive gear, provide a stable power source for the rotation of the internal threaded sleeve, ensuring continuous power transmission and reducing energy loss. The perpendicular meshing structure of the drive gear and two driven gears enables the two internal threaded sleeves to rotate synchronously in opposite directions, ensuring consistent adjustment force of the lead screws on both sides on the L-shaped plate, avoiding deformation of the housing due to uneven force, and improving the convenience and precision of structural adjustment. The raised strip design on the outside of the knob effectively increases friction during manual operation, allowing operators to rotate the knob more easily and stably, improving the comfort of the adjustment process, reducing adjustment errors caused by slippage, and enhancing reliability.

[0012] Preferably, the control plate has two movable columns slidably connected to the sides of the L-shaped plates on both sides, and the two movable columns on the same side are symmetrical about the internal threaded sleeve.

[0013] Preferably, one end of the movable column extends into the control panel, and a stop block is fixed to the end of the movable column located in the control panel to prevent the movable column from detaching from the control panel.

[0014] Preferably, two mounting cylinders are fixed to the side of the L-shaped plate near the control plate, and the positions of the mounting cylinders correspond one-to-one with the positions of the adjacent movable columns.

[0015] Preferably, the other end of the movable column extends into the mounting cylinder, and an anti-detachment block is fixed to the end of the movable column located inside the mounting cylinder to prevent the movable column from detaching from the mounting cylinder.

[0016] These four features, through the sliding connection between the movable column and the control plate and their symmetrical arrangement, provide excellent support and guidance for the L-shaped plate when the screw adjusts its position. This effectively prevents the L-shaped plate from tilting or shifting during movement, thereby enhancing the stability of the entire reinforcement structure and ensuring effective support for the corners of the packaging box. The stop blocks and anti-detachment blocks limit the sliding stroke of the movable column within the control plate and mounting cylinder, preventing it from detaching from the connecting components. This ensures the connection between the control plate and the L-shaped plate remains stable, preventing reinforcement structure failure due to movable column detachment and improving the reliability and service life of the device.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model utilizes a matrix arrangement of four L-shaped plates in conjunction with a control plate. By employing the threaded transmission mechanism of internal threaded sleeves and lead screws, rotating a knob drives the active gear to drive the driven gear, causing the two internal threaded sleeves rotating in opposite directions to rotate synchronously. This, in turn, adjusts the extension and retraction length of the lead screw, enabling flexible adjustment of the support force of the L-shaped plates. Depending on the size of the packaging box, this enhances the resistance to compression and impact on the corners of the box, thereby improving the protective effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the reinforcing structure in the utility model;

[0021] Figure 3 This is a cross-sectional view of the control panel in the utility model.

[0022] Figure 4 This is a cross-sectional view of the mounting cylinder in the utility model.

[0023] In the picture:

[0024] 100. Packaging box body;

[0025] 200. Reinforced structure; 201. Control panel; 202. L-shaped plate; 203. Internal threaded sleeve; 204. Lead screw; 205. Driven gear; 206. Drive gear; 207. Drive shaft; 208. Knob; 209. Movable column; 210. Mounting cylinder; 211. Stop block; 212. Anti-detachment block. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Please see Figures 1-4 The present invention provides the following technical solution:

[0028] The reinforcing structure of the biodegradable starch-based foam packaging box includes a packaging box body 100 made of biodegradable starch-based foam. A reinforcing structure 200 is provided inside the packaging box body 100. The reinforcing structure 200 includes four L-shaped plates 202 arranged in a matrix. The L-shaped plates 202 fit against the internal corners of the packaging box body 100. A control plate 201 is provided between two adjacent L-shaped plates 202. Two internally threaded sleeves 203 are symmetrically rotatably connected to the center of the control plate 201. The two internally threaded sleeves 203 rotate in opposite directions. The other end of the threaded sleeve 203 extends to the outside of the control plate 201. The internal thread of the internal threaded sleeve 203 is connected to the lead screw 204. The other end of the lead screw 204 is fixed to the adjacent L-shaped plate 202. The matrix arrangement of the L-shaped plates 202 fits against the inner corners of the box, which can directly enhance the anti-compression ability of the corners. The threaded transmission structure of the control plate 201, the internal threaded sleeve 203 and the lead screw 204 can flexibly change the support force of the L-shaped plate 202 on the corners of the box by adjusting the extension length of the lead screw 204, adapting to packaging boxes of different sizes and improving structural adaptability.

[0029] In this embodiment, please refer to Figures 1-3 The control board 201 is rotatably connected to a drive shaft 207, and a drive gear 206 is fixed at the bottom of the drive shaft 207. The drive shaft 207 is vertically arranged. The arrangement of the drive shaft 207 and the drive gear 206 provides a transmission hub for driving the internal threaded sleeve 203, which facilitates the power input to the entire reinforced structure through external operation.

[0030] Specifically, the driven gear 205 is fixed at one end of the internal threaded sleeve 203 located inside the control plate 201. Both driven gears 205 mesh perpendicularly with the driving gear 206, which can synchronously transmit the rotation of the driving shaft 207 to the two internal threaded sleeves 203. Since the two internal threaded sleeves 203 rotate in opposite directions, the lead screws 204 on both sides can be synchronously extended and retracted, ensuring that the force on both sides of the L-shaped plate 202 is uniform and improving the support stability.

[0031] Furthermore, a knob 208 is fixed after the top of the drive shaft 207 extends to the control plate 201. Several protrusions are regularly arranged on the outer wall of the knob 208. The knob 208 is designed to facilitate manual operation of the drive shaft 207. The outer protrusions can increase friction, prevent slippage during operation, and improve the convenience and reliability of adjustment.

[0032] In this embodiment, please refer to Figures 1-4The control plate 201 has two movable columns 209 slidably connected to the sides of the L-shaped plates 202 on both sides. The two movable columns 209 on the same side are symmetrical about the internal threaded sleeve 203. The sliding connection structure between the movable columns 209 and the control plate 201 can provide auxiliary guidance when the screw 204 adjusts the position of the L-shaped plate 202, prevent the L-shaped plate 202 from shifting during the movement, and enhance the stability of the structure.

[0033] Specifically, one end of the movable column 209 extends into the control plate 201. A stop block 211 is fixed to the end of the movable column 209 located inside the control plate 201. The stop block 211 is used to prevent the movable column 209 from detaching from the control plate 201. The stop block 211 can limit the sliding stroke of the movable column 209, prevent the movable column 209 from falling out of the control plate 201, and ensure that the movable column 209 always remains connected to the control plate 201, thus maintaining the integrity of the structure.

[0034] Furthermore, two mounting cylinders 210 are fixed on the side of the L-shaped plate 202 near the control plate 201. The positions of the mounting cylinders 210 correspond one-to-one with the positions of the adjacent movable columns 209, so that the movable columns 209 can effectively connect the control plate 201 and the L-shaped plate 202, thereby enhancing the structural stability and linkage between the two.

[0035] In addition, the other end of the movable column 209 extends into the mounting cylinder 210. An anti-detachment block 212 is fixed to the end of the movable column 209 located in the mounting cylinder 210. The anti-detachment block 212 is used to prevent the movable column 209 from detaching from the mounting cylinder 210. The anti-detachment block 212 can prevent the movable column 209 from coming out of the mounting cylinder 210, ensuring that the movable column 209 always remains connected to the L-shaped plate 202 during the sliding process, further improving the reliability of the reinforced structure 200 and avoiding support failure due to the movable column 209 falling off.

[0036] When using the reinforcing structure of the biodegradable starch-based foam packaging box of this utility model, the components of the reinforcing structure 200 are placed inside the packaging box body 100, and it is confirmed that the four L-shaped plates 202 correspond to the four inner corners of the box body respectively.

[0037] The knob 208 is manually rotated. The outer convex strip increases the friction and facilitates the application of force. The knob 208 drives the drive shaft 207 to rotate. The drive gear 206 at the bottom of the drive shaft 207 rotates synchronously. The drive gear 206 meshes vertically with the driven gears 205 on both sides. When the drive gear 206 rotates, the internal threaded sleeves 203 on both sides will rotate synchronously in opposite directions, causing the L-shaped plates 202 on both sides to move away from each other until the L-shaped plates 202 fit against the corners of the packaging box body 100.

[0038] During the adjustment of the lead screw 204, the movable column 209 slides synchronously within the control plate 201 and the mounting cylinder 210. Its symmetrical arrangement prevents the L-shaped plate 202 from shifting when it moves, ensuring that the L-shaped plate 202 fits tightly against the corners of the box and maintaining the stability of the support structure.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A reinforced structure for a biodegradable starch-based foam packaging box, comprising a packaging box body (100), wherein the packaging box body (100) is made of biodegradable starch-based foam, characterized in that: The packaging box body (100) is provided with a reinforcing structure (200), which includes four L-shaped plates (202) arranged in a matrix. The L-shaped plates (202) fit the inner corners of the packaging box body (100). A control plate (201) is provided between two adjacent L-shaped plates (202). Two internal threaded sleeves (203) are symmetrically rotated in the middle of the control plate (201). The two internal threaded sleeves (203) rotate in opposite directions. The other end of the internal threaded sleeve (203) extends to the outside of the control plate (201). The internal threaded sleeve (203) is internally threaded with a lead screw (204). The other end of the lead screw (204) is fixed on the adjacent L-shaped plate (202).

2. The reinforcing structure of the biodegradable starch-based foam packaging box according to claim 1, characterized in that: The control board (201) is rotatably connected to a drive shaft (207), and a drive gear (206) is fixed at the bottom of the drive shaft (207).

3. The reinforcing structure of the biodegradable starch-based foam packaging box according to claim 2, characterized in that: The internal threaded sleeve (203) is fixed with a driven gear (205) at one end inside the control plate (201), and both driven gears (205) mesh perpendicularly with the driving gear (206).

4. The reinforcing structure of the biodegradable starch-based foam packaging box according to claim 2, characterized in that: The top of the drive shaft (207) extends to the control plate (201) and a knob (208) is fixed thereon. The outer wall of the knob (208) is regularly provided with several protrusions.

5. The reinforcing structure of the biodegradable starch-based foam packaging box according to claim 1, characterized in that: The control plate (201) has two movable columns (209) slidably connected to the sides of the L-shaped plates (202) on both sides. The two movable columns (209) on the same side are symmetrical about the internal threaded sleeve (203).

6. The reinforcing structure of the biodegradable starch-based foam packaging box according to claim 5, characterized in that: One end of the movable column (209) extends into the control plate (201), and a stop block (211) is fixed at one end of the movable column (209) inside the control plate (201). The stop block (211) is used to prevent the movable column (209) from detaching from the control plate (201).

7. The reinforcing structure of the biodegradable starch-based foam packaging box according to claim 5, characterized in that: Two mounting cylinders (210) are fixed on the side of the L-shaped plate (202) near the control plate (201), and the positions of the mounting cylinders (210) correspond one-to-one with the positions of the adjacent movable columns (209).

8. The reinforcing structure of the biodegradable starch-based foam packaging box according to claim 7, characterized in that: The other end of the movable column (209) extends into the mounting cylinder (210). An anti-detachment block (212) is fixed to one end of the movable column (209) inside the mounting cylinder (210). The anti-detachment block (212) is used to prevent the movable column (209) from detaching from the mounting cylinder (210).

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