Pre-pressing device for plate blank

Abstract

The utility model relates to the field of plate processing, in particular to a pre-pressing device for plate blanks, which comprises a front bracket, a pre-pressing frame and a rear bracket, the pre-pressing frame comprises a liftable workbench and vertical plates surrounding the workbench, a space defined by the four vertical plates is wide in opening and narrow in inner side, and annular reinforcing frames are arranged on the outer sides of the vertical plates. After the plate blank is in place, the space defined by the four vertical plates is like a stable frame, the peripheral edges of the plate blank are fixed, and a stable foundation is provided for the subsequent pre-pressing procedure. Then, the pressing block begins to press downwards continuously, in the process, the whole surface and the edge of the plate blank bear pressure, and the stable pressed state is kept all the time. Through the uniform and stable pre-pressing mode, the size of the edge needing to be cut off is obviously reduced in the subsequent hot pressing and edge cutting procedures of the plate blank, so that the utilization rate of materials is greatly improved, and the production cost is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of board processing, in particular to a pre-pressing device of billet. BACKGROUND

[0002] In the production process of density board, pre-pressing procedure is indispensable. This link effectively improves the density of billet by discharging the air inside the billet, which not only prevents the billet from loosening in subsequent processing, but also reduces thickness deviation and significantly optimizes hot-pressing efficiency, playing a decisive role in guaranteeing the final quality and performance of density board. However, the current density board pre-pressing process has obvious defects. The existing pre-pressing equipment lacks a perfect edge locking mechanism, causing the edge part of the density board to be unable to be effectively constrained during the pre-pressing process, and it is prone to loosen. Even if subsequent hot-pressing treatment is performed, it is difficult to compensate for the edge loosening problem caused by the pre-pressing. Finally, after the hot-pressing process is completed, the edge part around the density board must be cut to a large extent to ensure the dimensional accuracy and appearance quality of the density board. This process results in a large amount of raw materials being wasted, which not only increases production costs, but also contradicts the concept of green production and efficient use of resources. SUMMARY

[0003] The utility model aims at providing a pre-pressing device of billet which can be limited.

[0004] To achieve the above-mentioned purpose, the utility model provides a pre-pressing device of billet, which comprises: front bracket, pre-pressing frame and rear bracket which are placed in sequence along the production sequence, the outer side of the front bracket is provided with a feeding mechanism, the upper side of the pre-pressing frame is provided with a liftable pressing block, and the upper side of the rear bracket is provided with a discharging mechanism;The pre-pressing frame comprises a liftable workbench and a vertical plate surrounding the workbench, the side of the four vertical plates close to the workbench is provided with a slope, so that the space surrounded by the four vertical plates forms a structure with a wide opening and a narrow inside, the four side walls of the workbench are flush with the vertical inner walls of the vertical plates, and the outer side of the four vertical plates is provided with at least two annular reinforcing frames, and the four side surfaces of the reinforcing frame are connected with the corresponding vertical plate through bolts.

[0005] As an improvement of the above-mentioned scheme, the surface of the workbench is provided with a plurality of grooves, the inside of the groove is provided with a boss and a spring, when the boss is not pressed, the upper surface of the boss protrudes from the workbench, and the protruding height of the boss is less than 1cm.

[0006] As an improvement of the above-mentioned scheme, the bottom of the workbench is provided with a hydraulic telescopic rod and a plurality of guide columns, the hydraulic telescopic rod drives the workbench to lift, and the plurality of guide columns limit the degree of freedom of the workbench so that it can only lift.

[0007] As an improvement to the above solution, when the workbench is raised to be level with the front or rear bracket, there is a gap between the bottom of the workbench and the four uprights to allow scattered wood chips to be discharged.

[0008] As an improvement to the above solution, the feeding mechanism includes a telescopic rod and a push rod, the push rod moving in the direction of the pre-compression frame, and the discharge mechanism includes at least one roller shaft, with the slab entering the front bracket from the left or right side of the feeding mechanism.

[0009] This invention offers the following advantages: During the slab pre-pressing operation, in the initial stage, the slab slowly descends to the vertical inner side of the space enclosed by four upright plates. The inclined surfaces of these four plates effectively guide the slab to automatically center itself during its descent, ensuring that the slab accurately lands in the predetermined position. Once the slab is in place, the space enclosed by the four upright plates acts like a stable frame, fixing the four edges of the slab and providing a stable foundation for the subsequent pre-pressing process. Subsequently, the pressure block begins to press down continuously. During this process, the entire surface and edges of the slab bear pressure, maintaining a stable state of pressure. Through this uniform and stable pre-pressing method, the edge dimensions that need to be trimmed in the subsequent hot pressing and trimming processes are significantly reduced, thereby greatly improving material utilization and effectively reducing production costs. After the pre-pressing process is completed, the worktable lifts the slab. At this time, the next slab waiting for pre-pressing will enter the pre-pressing frame. As the newly arrived slab moves, it will naturally squeeze out the pre-pressed slab that has already been pre-pressed. This process is repeated to achieve continuous and efficient operation of the slab pre-pressing process. Attached Figure Description

[0010] Figure 1 A front view of a pre-compression device in one embodiment;

[0011] Figure 2 This is a perspective view of a preloaded frame in one embodiment.

[0012] Explanation of reference numerals in the attached drawings: 11. Front bracket; 12. Push rod; 21. Pressure block; 22. Worktable; 23. Vertical plate; 24. Boss; 25. Hydraulic telescopic rod; 26. Guide column; 27. Reinforcing frame; 31. Rear bracket; 32. Roller; 40. Slab. Detailed Implementation

[0013] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0014] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Where the terms "first," "second," and "third" are used for descriptive purposes and to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0016] Reference Figure 1 and Figure 2 This utility model discloses a pre-pressing device for slabs, comprising: a front support 11, a pre-pressing frame, and a rear support 31 arranged sequentially in the production sequence. A feeding mechanism is provided on the outer side of the front support 11, a liftable pressing block 21 is provided above the pre-pressing frame, and a discharge mechanism is provided above the rear support 31. The pre-pressing frame includes a liftable worktable 22 and four upright plates 23 surrounding the worktable 22. The four upright plates 23 are provided with a slope on the side closest to the worktable 22, so that the space enclosed by the four upright plates 23 forms a structure with a wide opening and a narrow inner side. The four side walls of the worktable 22 are flush with the vertical inner walls of the upright plates. At least two annular reinforcing frames 27 are provided on the outer side of the four upright plates 23, and the four sides of the reinforcing frames 27 are all connected to the corresponding upright plates 23 by bolts.

[0017] As an improvement to the above solution, the surface of the worktable 22 is provided with several slots, and the interior of each slot is provided with a boss 24 and its spring. When the boss 24 is not pressed, its upper surface protrudes from the worktable 22, and the protrusion height of the boss 24 is less than 1 cm. With this solution, when the pressure block 21 is lifted, the several protrusions can appropriately lift the slab 40, reducing the contact area between the slab 40 and the worktable 22, making it easier to push it away.

[0018] As an improvement to the above solution, the bottom of the workbench 22 is provided with a hydraulic telescopic rod 25 and several guide columns 26. The hydraulic telescopic rod 25 drives the workbench 22 to rise and fall, and the several guide columns 26 restrict the degree of freedom of the workbench 22 so that it can only rise and fall.

[0019] As an improvement to the above solution, when the workbench 22 is raised to be level with the front bracket 11 or the rear bracket 31, there is a gap between the bottom of the workbench 22 and the four uprights 23 to remove scattered wood chips.

[0020] As an improvement to the above solution, the feeding mechanism includes a telescopic rod and a push rod 12, the push rod 12 moving in the direction of the pre-compression frame, and the discharge mechanism includes at least one roller 32, and the slab 40 enters the front bracket 11 from the left or right side of the feeding mechanism.

[0021] During the pre-pressing operation of slab 40, in the initial stage, slab 40 slowly descends to the vertical inner side of the space enclosed by four upright plates 23. The inclined surfaces of these four upright plates 23 effectively guide slab 40 to automatically center itself during its descent, ensuring that slab 40 falls precisely into the predetermined position. Once slab 40 is in place, the space enclosed by the four upright plates 23 acts like a stable frame, fixing the four edges of slab 40 and providing a stable foundation for the subsequent pre-pressing process. Subsequently, the pressure block 21 begins to press down continuously. During this process, the entire surface and edges of slab 40 bear pressure, maintaining a stable state of pressure. Through this uniform and stable pre-pressing method, the edge dimensions that need to be trimmed in the subsequent hot pressing and trimming processes of slab 40 are significantly reduced, thereby greatly improving material utilization and effectively reducing production costs. After the pre-pressing process is completed, the worktable 22 lifts slab 40. At this time, the next slab 40 waiting for pre-pressing will enter the pre-pressing frame. As the newly entered slab 40 moves, it will naturally squeeze out the pre-pressed slab 40 that has already been pre-pressed. This process is repeated to achieve continuous and efficient operation of the slab 40 pre-pressing process.

[0022] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A pre-pressing device for slabs, characterized in that, include: A front support, a pre-compression frame, and a rear support are arranged sequentially in the production sequence. A feeding mechanism is provided on the outer side of the front support, a liftable pressure block is provided above the pre-compression frame, and a discharge mechanism is provided above the rear support. The pre-compression frame includes a liftable worktable and four upright plates surrounding the worktable. The four upright plates have a ramp on the side closest to the worktable, so that the space enclosed by the four upright plates forms a structure with a wide opening and a narrow inner side. The four side walls of the worktable are flush with the vertical inner walls of the upright plates. At least two annular reinforcing frames are provided on the outer side of the four upright plates, and the four sides of the reinforcing frames are bolted to the corresponding upright plates.

2. The pre-pressing device for slabs according to claim 1, characterized in that: The surface of the workbench is provided with several slots, and the inside of the slots is provided with a boss and its spring. When the boss is not pressed, the upper surface of the boss protrudes from the workbench, and the protrusion height of the boss is less than 1 cm.

3. The pre-pressing device for slabs according to claim 2, characterized in that: The bottom of the workbench is equipped with a hydraulic telescopic rod and several guide columns. The hydraulic telescopic rod drives the workbench to rise and fall, while the guide columns restrict the workbench's degrees of freedom, allowing it to only rise and fall.

4. The pre-pressing device for slabs according to claim 3, characterized in that: When the workbench is raised to be level with the front or rear bracket, there are gaps between the bottom of the workbench and the four uprights to allow scattered sawdust to escape.

5. The pre-pressing device for slabs according to claim 4, characterized in that: The feeding mechanism includes a telescopic rod and a push rod, the push rod moves toward the pre-compression frame, and the discharge mechanism includes at least one roller, the slab enters the front bracket from the left or right side of the feeding mechanism.

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