Aluminum paperboard leveling device

Abstract

The utility model relates to the technical field of paperboard processing equipment, in particular to an aluminized paperboard leveling device which comprises a rack, a driving assembly, a pressure buffering seat and a loading assembly driven by the driving assembly to be close to or far away from the pressure buffering seat, the loading assembly comprises a supporting frame, a pressing plate, a supporting plate and an adjusting assembly, the pressing plate and the supporting plate are both arranged on the supporting frame, the supporting plate is arranged in a sliding mode, and the pressing plate is movably arranged on the upper side of the supporting plate through the adjusting assembly so as to adjust the distance between the pressing plate and the supporting plate; by means of the aluminized paperboard leveling device, the leveling efficiency of aluminized paperboards can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field of paperboard processing equipment, specifically to an aluminum-coated paperboard leveling device. Background Technology

[0002] Aluminized paperboard (also known as metallized paperboard or aluminum foil composite paperboard) is a material made by combining aluminum foil (or a vacuum-metallized layer) with a paper substrate, combining the flexibility of paper with the luster and barrier properties of metal. It is widely used in packaging (such as food, pharmaceutical, and cigarette boxes), decoration, and labeling, and is favored for its aesthetic appeal, moisture resistance, oxygen barrier properties, and UV resistance. However, due to the difference in thermal expansion coefficients between the aluminum layer and the paper substrate—aluminum's coefficient of expansion is much higher than that of the paper substrate—when the ambient temperature changes (such as under high temperature or dry conditions), the uneven shrinkage / expansion of the aluminum layer and the paper substrate leads to an imbalance of internal stress, causing curling (usually bending towards the paper substrate). Furthermore, during the manufacturing process, slitting and die-cutting processes may disrupt the material's structural balance, leading to localized stress concentration and curling. Additionally, if rolled aluminum-coated paperboard is not stored flat, it may curl due to its own weight. To ensure product quality, leveling equipment is required for processing the paperboard.

[0003] Existing leveling devices, such as the one disclosed in patent CN214164235U, are corrugated cardboard leveling devices. They use a support frame with corresponding pressure plates and a base plate. The pressure plates are driven by a cylinder to press down and level the cardboard. However, for cardboard that has already curled, after the cardboard is placed on the base plate, it bends again when the pressure plate is pressed down because the bent parts of the cardboard are not subjected to equal force. The bending requires manual operation to re-level the cardboard, which affects the leveling efficiency. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an aluminum-coated paperboard leveling device, which can improve the leveling efficiency of aluminum-coated paperboard.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an aluminum-coated paperboard leveling device, comprising a frame and a drive assembly, a pressure relief seat, and a loading assembly that is driven by the drive assembly to approach or move away from the pressure relief seat; the loading assembly includes a support frame, a pressure plate, a tray, and an adjustment assembly, wherein the pressure plate and the tray are both disposed on the support frame, wherein the tray is slidably disposed, and the pressure plate is movably disposed on the upper side of the tray through the adjustment assembly to adjust the distance between the pressure plate and the tray; the pressure relief seat is located on the lower side of the tray.

[0006] Preferably, the adjusting assembly includes a screw, a first spring, a fixed plate, and a handle. The pressure plate is disposed on the upper side of the support plate via the screw and the fixed plate. The fixed plate is fixedly disposed on the top of the support frame, the screw slides through the fixed plate, and the pressure plate is fixedly disposed on the lower end of the screw. The first spring is sleeved on the screw and compressed between the pressure plate and the fixed plate. The handle is disposed on the top of the screw.

[0007] Preferably, the adjusting assembly further includes an adjusting nut; the adjusting nut is threaded onto the screw and located between the handle and the fixed plate.

[0008] Preferably, the pressure plate has multiple through holes.

[0009] Preferably, the outer dimensions of the pressure plate are the same as the outer dimensions of the pallet.

[0010] Preferably, the main end face of the pressure plate is parallel to the main end face of the support plate.

[0011] Preferably, the pressure relief seat includes a sleeve, a top block, and a second spring. The sleeve is fixedly installed. The lower part of the top block extends at least partially into the sleeve, and the top block is slidably connected to the sleeve. The second spring is located inside the sleeve, and the upper end of the second spring abuts against the lower end of the top block.

[0012] Preferably, the drive assembly includes a motor, a drive shaft that is driven by the motor and slidably disposed on the top of the frame, and two sets of transmission assemblies; the motor is disposed on the top of the frame; the two sets of transmission assemblies are symmetrically disposed on both sides of the drive shaft; the transmission assembly includes a ball screw, a coupling, a connecting shaft, and multiple bevel gears, the ball screw is arranged vertically, its upper end is connected to the lower end of the connecting shaft through a coupling, and the upper end of the connecting shaft is connected to one end of the drive shaft through a bevel gear; the two ball screws are located on both sides of the support frame and are connected to the support frame.

[0013] Preferably, the support frame is provided with a plurality of vertically arranged second slide rails; the tray is slidably arranged through the second slide rails; and limit pins are provided at both ends of the second slide rails in the length direction.

[0014] Preferably, the support frame has an inverted U-shaped structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: by sliding the loading component on the upper side of the pressure relief seat and being driven by the driving component to approach or move away from the pressure relief seat, the cardboard inside the loading component can be leveled when the loading component is driven by the driving component to continuously contact and approach the pressure relief seat. At the same time, the loading component includes a pressure plate and a support plate with adjustable relative distance. The support plate is slidably set so that the loading component can pre-press the aluminum-coated cardboard before leveling, avoiding the cardboard from bending again due to uneven force on the curved part of the cardboard and the cardboard body caused by natural spreading, thus improving the leveling efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the leveling device of this utility model;

[0017] Figure 2 This is a schematic diagram of the loading component structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the longitudinal section of the pressure-relieving seat of this utility model.

[0019] In the diagram: 1. Frame, 11. First slide rail, 2. Drive assembly, 21. Motor, 22. Drive shaft, 23. Ball screw, 24. Coupling, 25. Connecting shaft, 26. Bevel gear, 3. Loading assembly, 31. Support frame, 32. Pressure plate, 33. Support plate, 34. Second slide rail, 35. Screw, 36. Adjusting nut, 37. First spring, 38. Fixing plate, 39. Handle, 4. Pressure relief seat, 41. Sleeve, 42. Top block, 43. Second spring. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.

[0021] See Figure 1-3 In one embodiment of the present invention, an aluminum-coated paperboard leveling device includes: a frame 1 and a drive assembly 2, a loading assembly 3 and a pressure relief seat 4 mounted on the frame 1. The loading assembly 3 is used to load paperboard, which can be one sheet or multiple sheets. The loading assembly 3 is slidably disposed on the upper side of the pressure relief seat 4 and is driven by the drive assembly 2 to approach or move away from the pressure relief seat 4. When the loading assembly 3 is driven by the drive assembly 2 to continuously contact and approach the pressure relief seat 4, the paperboard disposed in the loading assembly 3 can be leveled.

[0022] Specifically, the frame 1 has a U-shaped frame structure, and its inner side is provided with a vertically symmetrical first slide rail 11. The loading component 3 is slidably connected to the frame 1 body through the first slide rail 11. For stability, the first slide rail 11 is provided with four rails.

[0023] The drive assembly 2 includes a motor 21, a transmission shaft 22 driven by the motor 21 and slidably mounted on the top of the frame 1, and two sets of transmission assemblies. The motor 21 is mounted on the top of the frame 1. The two sets of transmission assemblies are symmetrically arranged on both sides of the transmission shaft 22. The transmission assembly includes components such as a ball screw 23, a coupling 24, a connecting shaft 25, and multiple bevel gears 26. The ball screw 23 is arranged vertically, and its upper end is connected to the lower end of the connecting shaft 25 through the coupling 24. The upper end of the connecting shaft 25 is connected to one end of the transmission shaft 22 through the bevel gears 26. The operation of the motor 21 can drive the ball screws 23 on both sides of the transmission shaft 22 to rotate synchronously.

[0024] The loading assembly 3 includes a support frame 31, a pressure plate 32, a pallet 33, a second slide rail 34, a screw 35, a first spring 37, a fixing plate 38, and a handle 39. The support frame 31 has an inverted U-shaped structure and is slidably connected to the frame 1 body via the first slide rail 11. The support frame 31 is located between two ball screws 23 and is connected to the ball screws 23 on both sides. Driven by the motor 21, the support frame 31 can move vertically up and down. There are four second slide rails 34. The pallet 33 is slidably disposed on the lower inner side of the support frame 31 via the second slide rails 34. Under the action of external force, the pallet 33 can move vertically up and down along the second slide rails 34. Furthermore, in order to prevent the pallet 33 from slipping off the support frame 31, each end of the second slide rail 34 is provided with a limiting pin.

[0025] The pressure plate 32 is mounted on the upper side of the support plate 33 via a screw 35 and a fixing plate 38. The fixing plate 38 is fixed to the top of the support frame 31, the screw 35 slides through the fixing plate 38, and the pressure plate 32 is fixed to the lower end of the screw 35. The main end face of the pressure plate 32 is parallel to the main end face of the support plate 33. The first spring 37 is sleeved on the screw 35 and compressed between the pressure plate 32 and the fixing plate 38. The handle 39 is located on the top of the screw 35, preventing the screw 35 from detaching from the fixing plate 38 and facilitating... The pressure plate 32 is manually lifted, and cardboard is placed between the pressure plate 32 and the support plate 33. The first spring 37, under compression, tends to release potential energy. Under this action, when multiple cardboards are placed between the pressure plate 32 and the support plate 33, the first spring 37 pushes the pressure plate 32 to press the cardboard tightly. During the leveling process, that is, at this time, the cardboard can be fixed under the clamping of the pressure plate 32 and the support plate 33, avoiding bending again due to uneven force on the curved parts of the cardboard and the cardboard body caused by the natural spreading of the cardboard, thus improving the leveling efficiency. In this embodiment, the pressure plate 32 and the support plate 33 can be made of metal. Sufficient rigidity can prevent the pressure plate 32 and the support plate 33 from bending during the leveling process, thereby reducing the cardboard leveling effect. In the initial position, the pressure relief seat 4 is located below the support plate 33 and is out of contact.

[0026] Furthermore, the outer dimensions of the pressure plate 32 are the same as those of the support plate 33 to ensure a leveling effect.

[0027] The pressure relief seat 4 is used to provide pressure relief and prevent the cardboard from being excessively flattened due to improper control of the motor 21. The pressure relief seat 4 is located below the tray 33. The pressure relief seat 4 includes a sleeve 41, a top block 42, and a second spring 43. The sleeve 41 is fixedly installed. The lower part of the top block 42 extends at least partially into the sleeve 41, and the top block 42 is slidably connected to the sleeve 41. The second spring 43 is located inside the sleeve 41, and the upper end of the second spring 43 abuts against the lower end of the top block 42.

[0028] After multiple cardboard pieces are placed between the pressure plate 32 and the pallet 33, the support frame 31 can move vertically up and down under the drive of the motor 21. When the pallet 33 contacts the pressure relief seat 4, since the pallet 33 is slidable, the distance between the pressure plate 32 and the pallet 33 is further compressed under the action of the driving force and the pressure relief seat 4. After reaching the preset position, the motor 21 stops. After a certain period of time, the motor 21 restarts and lifts the support frame 31 to disengage the pallet 33 from the pressure relief seat 4. After the support frame 31 returns to the initial position, the flattened cardboard can be removed by pulling the handle 39.

[0029] In one embodiment, when placing the cardboard to be leveled between the pressure plate 32 and the tray 33, the handle 39 needs to be pulled upward to lift the pressure plate 32. To facilitate operation, multiple through holes can be opened on the pressure plate 32, similar to a grid board, thereby reducing the weight of the pressure plate 32.

[0030] In one embodiment, the loading assembly 3 further includes an adjusting nut 36, which is threaded onto the screw 35 and abuts against the upper end face of the fixing plate 38 under the action of the first spring 37. Rotating the adjusting nut 36 can change the distance between the pressure plate 32 and the support plate 33 to adjust (increase or decrease) the loading capacity of the loading assembly 3.

[0031] This technical solution allows the loading component to slide on the upper side of the pressure relief seat and be driven by the driving component to approach or move away from the pressure relief seat. As the loading component is driven by the driving component to continuously contact and approach the pressure relief seat, the cardboard inside the loading component can be leveled. The loading component includes a pressure plate and a support plate with adjustable relative distance. The support plate is slidably arranged so that the loading component can pre-press the cardboard before leveling, preventing the cardboard from bending again due to uneven stress on the curved parts and the cardboard body caused by natural spreading, thus improving the leveling efficiency.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A leveling device for aluminum-coated cardboard, characterized in that: The system includes a frame (1) and a drive assembly (2), a pressure relief seat (4), and a loading assembly (3) that is driven by the drive assembly (2) to approach or move away from the pressure relief seat (4). The loading assembly (3) includes a support frame (31), a pressure plate (32), a tray (33), and an adjustment assembly. The pressure plate (32) and the tray (33) are both located on the support frame (31). The tray (33) is slidably mounted. The pressure plate (32) is movably mounted on the upper side of the tray (33) through the adjustment assembly to adjust the distance between the pressure plate (32) and the tray (33). The pressure relief seat (4) is located on the lower side of the tray (33).

2. The aluminum-coated paperboard leveling device according to claim 1, characterized in that: The adjustment assembly includes a screw (35), a first spring (37), a fixing plate (38), and a handle (39). The pressure plate (32) is located on the upper side of the support plate (33) via the screw (35) and the fixing plate (38). The fixing plate (38) is fixedly located on the top of the support frame (31), the screw (35) slides through the fixing plate (38), and the pressure plate (32) is fixedly located at the lower end of the screw (35). The first spring (37) is sleeved on the screw (35) and compressed between the pressure plate (32) and the fixing plate (38). The handle (39) is located on the top of the screw (35).

3. The aluminum-coated paperboard leveling device according to claim 2, characterized in that: The adjustment assembly also includes an adjustment nut (36); the adjustment nut (36) is threaded onto the screw (35) and located between the handle (39) and the fixing plate (38).

4. The aluminum-coated paperboard leveling device according to claim 2, characterized in that: The pressure plate (32) has multiple through holes.

5. The aluminum-coated paperboard leveling device according to claim 1, characterized in that: The outer dimensions of the pressure plate (32) are the same as those of the support plate (33).

6. The aluminum-coated paperboard leveling device according to claim 1, characterized in that: The main end face of the pressure plate (32) is parallel to the main end face of the support plate (33).

7. The aluminum-coated paperboard leveling device according to claim 1, characterized in that: The pressure relief seat (4) includes a sleeve (41), a top block (42), and a second spring (43). The sleeve (41) is fixedly installed. The lower part of the top block (42) extends at least partially into the sleeve (41), and the top block (42) is slidably connected to the sleeve (41). The second spring (43) is located inside the sleeve (41), and the upper end of the second spring (43) abuts against the lower end of the top block (42).

8. The aluminum-coated paperboard leveling device according to claim 1, characterized in that: The drive assembly (2) includes a motor, a drive shaft that is driven by the motor and slidably disposed on the top of the frame (1), and two sets of transmission assemblies; the motor is disposed on the top of the frame; the two sets of transmission assemblies are symmetrically disposed on both sides of the drive shaft; the transmission assembly includes a ball screw, a coupling, a connecting shaft and multiple bevel gears, the ball screw is disposed vertically, its upper end is connected to the lower end of the connecting shaft through a coupling, and the upper end of the connecting shaft is connected to one end of the drive shaft through a bevel gear; the two ball screws are located on both sides of the support frame (31) and are connected to the support frame (31).

9. The aluminum-coated paperboard leveling device according to claim 1, characterized in that: The support frame (31) is provided with a plurality of vertically arranged second slide rails; the tray (33) is slidably arranged through the second slide rails; and the two ends of the second slide rails in the length direction are provided with limit pins.

10. The aluminum-coated paperboard leveling device according to claim 1, characterized in that: The support frame (31) has an inverted U-shaped structure.

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