A compression device for composite paperboard production

Abstract

This utility model belongs to the field of composite paperboard production, specifically a pressing device for composite paperboard production. It includes a worktable with a pressing mechanism fixed on it for pressing paperboard. A U-shaped groove is formed through the top of the worktable, and a limiting mechanism is provided at the bottom. The limiting mechanism includes a bracket with both ends welded to the worktable and its bottom in contact with the ground. A rectangular elastic support is provided at the top of the bracket. Through the structural design of the pressing mechanism, bracket, elastic support, support plate, and U-shaped limiting plate, multiple single-layer paperboards are placed in the placement cavity formed by the U-shaped limiting plate and the worktable during use. This helps to quickly limit the placement of multiple single-layer paperboards, ensuring neat placement and improving subsequent pressing quality. Furthermore, when the pressure plate descends, it first contacts the top of the U-shaped limiting plate, which then descends after being compressed, avoiding interference with the paperboard pressing operation.

Description

Technical Field

[0001] This utility model relates to the field of composite paperboard production, specifically a pressing device for composite paperboard production. Background Technology

[0002] Paperboard, also known as board paper, is a thick sheet of paper made from various pulps and composed of interwoven fibers. The difference between paperboard and paper is usually distinguished by basis weight and thickness. Composite paperboard is formed by pressing multiple single-layer paperboards together to form paperboard of a certain thickness.

[0003] When using existing composite board pressing machines, workers stack multiple pieces of cardboard neatly and place them under the pressing plate of the machine. Then, the pressing plate is driven by a cylinder to descend and complete the compaction and forming of the composite board. In this process, workers need to first stack multiple pieces of cardboard neatly and ensure that there is no misalignment between the cardboard pieces after placement, which is time-consuming and not conducive to improving work efficiency. Therefore, a pressing device for composite cardboard production is proposed to address the above problems. Utility Model Content

[0004] To address the problem that existing paperboard technology is prone to shifting during stacking, requiring time-consuming adjustments by workers and hindering work efficiency, this utility model proposes a pressing device for composite paperboard production.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a pressing device for composite paperboard production, including a worktable, a pressing mechanism for pressing paperboard is fixed on the worktable, an i-shaped groove is opened through the top of the worktable, and a limit mechanism is provided at the bottom of the worktable.

[0006] The limiting mechanism includes a bracket with both ends welded to the workbench and the bottom in contact with the ground. The top of the bracket is provided with a rectangular elastic support member. The top of the four elastic support members is provided with a support plate. The top of the support plate is fixed with a C-shaped limiting plate. The C-shaped limiting plate is clearance-fitted with the C-shaped groove. One end passes through the C-shaped groove and cooperates with the workbench to form a placement cavity for placing cardboard.

[0007] Preferably, the pressing mechanism includes a mounting bracket fixed to the top of the workbench, a cylinder is fixed to the top of the mounting bracket, and a pressure plate is fixed to the telescopic end of the cylinder after passing downward through the top plate of the pressing mechanism.

[0008] Preferably, the mounting bracket is in the shape of an inverted "U", and the top of the mounting bracket has a hollow groove through which the cylinder extension end can pass.

[0009] Preferably, the bracket has a rectangular threaded hole, and the top surface of the inner wall of the threaded hole has a through hole with a diameter smaller than that of the threaded hole. The top of the support plate has a rectangular guide hole.

[0010] Preferably, the elastic support includes a screw, one end of which is fixed with a guide rod. When the screw is threaded into a threaded hole, the guide rod passes through the guide rod and then exits from the guide hole.

[0011] Preferably, a spring is fitted on the outer wall of the guide rod, with the bottom of the spring abutting against the top of the bracket and the top abutting against the bottom surface of the support plate.

[0012] Preferably, baffles are fixed on both sides of the outer wall of the C-shaped limiting plate, and a silicone pad is provided on the top surface of the baffles.

[0013] Preferably, a cross knob is fixed to the end of the screw away from the guide rod.

[0014] The advantages of this utility model are: 1. This utility model, through the structural design of a pressing mechanism, bracket, elastic support, support plate and U-shaped limiting plate, allows multiple single-layer cardboard pieces to be placed in the placement cavity formed by the U-shaped limiting plate and the worktable during use. This helps to quickly limit the placement of multiple single-layer cardboard pieces, ensuring that they are placed neatly, which is beneficial to the subsequent pressing quality. In addition, when the pressure plate descends, it first contacts the top of the U-shaped limiting plate. The U-shaped limiting plate will descend after being squeezed, avoiding interference with the cardboard pressing operation. 2. Through the structural design of threaded hole, hollow hole, screw and guide rod, this utility model allows the spring to be disassembled and replaced when it is fatigued and damaged after long-term operation and needs to be replaced. The guide rod can be pulled out by unscrewing the screw. 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 this utility model; Figure 2 This is a schematic diagram of the pressing mechanism of this utility model; Figure 3 This is a schematic diagram of the limiting mechanism structure of this utility model; Figure 4This is a schematic diagram of the elastic support structure of this utility model; Figure 5 This is a schematic diagram of the bottom structure of the bracket of this utility model.

[0017] In the diagram: 1. Workbench; 10. Cham-shaped groove; 2. Pressing mechanism; 20. Mounting bracket; 21. Cylinder; 22. Pressure plate; 3. Limiting mechanism; 30. Bracket; 300. Threaded hole; 301. Hollow hole; 31. Elastic support; 310. Screw; 311. Guide rod; 312. Spring; 32. Support plate; 320. Guide hole; 33. Cham-shaped limiting plate; 34. Baffle. Detailed Implementation

[0018] 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 scope of protection of the present utility model.

[0019] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail. This application discloses a pressing apparatus for producing composite paperboard. (Refer to...) Figure 1 - Figure 5 A pressing device for composite paperboard production includes a workbench 1, on which a pressing mechanism 2 for pressing paperboard is fixed. A U-shaped groove 10 is provided through the top of the workbench 1, and a limiting mechanism 3 is provided at the bottom of the workbench 1.

[0020] The limiting mechanism 3 includes a bracket 30 with both ends welded to the workbench 1 and the bottom in contact with the ground. The top of the bracket 30 is provided with a rectangular elastic support member 31. The top of the four elastic support members 31 is provided with a support plate 32. The top of the support plate 32 is fixed with a chamfered limiting plate 33. The chamfered limiting plate 33 is clearance-fitted with the chamfered groove 10. One end passes through the chamfered groove 10 and cooperates with the workbench 1 to form a placement cavity for placing cardboard.

[0021] Reference Figure 1 and Figure 2 The pressing mechanism 2 includes a mounting bracket 20 fixed to the top of the workbench 1. A cylinder 21 is fixed to the top of the mounting bracket 20. The telescopic end of the cylinder 21 passes downward through the top plate of the pressing mechanism 2 and is fixed to a pressure plate 22. The size of the pressure plate 22 is larger than the size of the placement cavity.

[0022] Among them, cylinder 21 is a double-acting piston cylinder. There are two cylinders 21, which are connected synchronously by a synchronizer to ensure that the two cylinders 21 work synchronously.

[0023] Reference Figure 2 The mounting bracket 20 is shaped like an inverted "U". The top of the mounting bracket 20 has a hollow groove through which the telescopic end of the cylinder 21 can pass.

[0024] The mounting bracket 20 is fixed to the workbench 1 on both sides by M12 high-strength bolts (the bolts are embedded in the pre-set threaded grooves of the workbench 1) to ensure overall rigidity and no shaking during pressing. The diameter of the hollowed-out groove on the top is 2mm larger than the telescopic end of the cylinder 21, and the edges are rounded to avoid scratching the piston rod of the cylinder 21.

[0025] Reference Figure 3 , Figure 4 and Figure 5 The bracket 30 has a rectangular threaded hole 300, and the top surface of the inner wall of the threaded hole 300 has a through hole 301. The diameter of the through hole 301 is smaller than that of the threaded hole 300. The top of the support plate 32 has a rectangular guide hole 320.

[0026] Reference Figure 4 The elastic support 31 includes a screw 310, one end of which is fixed with a guide rod 311. When the screw 310 is threaded into the threaded hole 300, the guide rod 311 passes through the guide rod 311 and then exits from the guide hole 320.

[0027] Reference Figure 3 , Figure 4 and Figure 5 A spring 312 is sleeved on the outer wall of the guide rod 311. The spring 312 is a high-strength compression spring. The bottom of the spring 312 abuts against the top of the bracket 30, and the top abuts against the bottom surface of the support plate 32.

[0028] Reference Figure 3 and Figure 4 Both sides of the outer wall of the C-shaped limiting plate 33 are fixed with baffles 34, and the top surface of the baffles 34 is provided with a silicone pad.

[0029] The baffle 34 limits the distance the limit plate 33 rises, thus preventing the guide rod 311 from completely disengaging from the guide hole 320. The silicone pad protects the limit plate 33 and also reduces noise.

[0030] Reference Figure 4 The end of the screw 310 away from the guide rod 311 is fixed with a cross knob, and the surface is provided with anti-slip texture for easy manual operation.

[0031] Working principle: When the cylinder 21 is in the retracted state, the pressure plate 22 is in the highest position, the spring 312 of the elastic support 31 is in the natural state, and pushes the support plate 32 to drive the C-shaped limiting plate 33 to rise, so that the top surface of the C-shaped limiting plate 33 is higher than the top surface of the worktable 1. At this time, the C-shaped limiting plate 33 and the worktable 1 form an open placement cavity.

[0032] The composite paperboard (such as multi-layer corrugated paper, fiberboard, etc.) to be pressed is placed in the placement cavity, with the edge of the paperboard adhering to the inner side of the C-shaped limiting plate 33. The cylinder 21 is activated, and its telescopic end extends downward, pushing the pressure plate 22 to descend vertically. After the pressure plate 22 contacts the C-shaped limiting plate 33, it continues to apply downward pressure, thereby pushing the support plate 32 to compress the spring 312, which in turn causes the C-shaped limiting plate 33 to descend from the C-shaped groove 10. When it descends to be flush with the paperboard, the pressure plate 22 can squeeze the paperboard. When the pressure plate 22 reaches the preset stroke (controlled by the cylinder magnetic switch), the adhesive between the paperboard layers is fully bonded and cured.

[0033] After pressing is completed, the telescopic end of cylinder 21 retracts, and pressure plate 22 returns to its original position. At the same time, spring 312 releases elastic potential energy, pushing support plate 32 and U-shaped limiting plate 33 to rise to their initial positions. The pressed cardboard is then manually removed, completing one pressing cycle.

[0034] When spring 312 needs to be replaced, screw 310 to remove it from the threaded hole 300. At the same time, guide rod 311 extends out from the hollow hole 301, allowing the worker to remove spring 312. After replacing it with a new spring 312, the spring can be reinstalled.

[0035] 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 illustrative of the principles of this 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.

Claims

1. A pressing device for producing composite paperboard, comprising a worktable (1), wherein a pressing mechanism (2) for pressing paperboard is fixed on the worktable (1), characterized in that: The top of the workbench (1) is provided with a through groove (10), and the bottom of the workbench (1) is provided with a limit mechanism (3). The limiting mechanism (3) includes a bracket (30) with both ends welded to the workbench (1) and the bottom in contact with the ground. The top of the bracket (30) is provided with a rectangular elastic support (31). The top of the four elastic support (31) is provided with a support plate (32). The top of the support plate (32) is fixed with a C-shaped limiting plate (33). The C-shaped limiting plate (33) is in clearance fit with the C-shaped groove (10). One end passes through the C-shaped groove (10) and cooperates with the workbench (1) to form a placement cavity for placing cardboard.

2. The pressing device for composite paperboard production according to claim 1, characterized in that: The pressing mechanism (2) includes a mounting bracket (20) fixed on the top of the workbench (1), a cylinder (21) is fixed on the top of the mounting bracket (20), and a pressure plate (22) is fixed after the telescopic end of the cylinder (21) passes downward through the top plate of the pressing mechanism (2).

3. The pressing device for composite paperboard production according to claim 2, characterized in that: The mounting bracket (20) is shaped like an inverted "U". The top of the mounting bracket (20) has a hollowed-out groove through which the telescopic end of the cylinder (21) can pass.

4. The pressing device for composite paperboard production according to claim 1, characterized in that: The bracket (30) has a rectangular threaded hole (300), and the top surface of the inner wall of the threaded hole (300) has a through hole (301). The diameter of the through hole (301) is smaller than that of the threaded hole (300). The top of the support plate (32) has a rectangular guide hole (320).

5. A pressing device for composite paperboard production according to claim 1 or 4, characterized in that: The elastic support (31) includes a screw (310), one end of which is fixed with a guide rod (311). When the screw (310) is threaded into the threaded hole (300), the guide rod (311) passes through the guide rod (311) and then exits from the guide hole (320).

6. The pressing device for composite paperboard production according to claim 5, characterized in that: A spring (312) is fitted on the outer wall of the guide rod (311). The bottom of the spring (312) abuts against the top of the bracket (30), and the top abuts against the bottom surface of the support plate (32).

7. The pressing device for composite paperboard production according to claim 1, characterized in that: Both sides of the outer wall of the C-shaped limiting plate (33) are fixed with baffles (34), and the top surface of the baffles (34) is provided with silicone pads.

8. A pressing device for composite paperboard production according to claim 5, characterized in that: A cross knob is fixed to the end of the screw (310) away from the guide rod (311).

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