LVL assembly cold pressing device

Abstract

The utility model discloses an LVL assembly cold pressing device which comprises a base and four fixed connecting columns, the tops of the four fixed connecting columns are fixedly connected with a top plate, at least two telescopic air cylinders and a cold pressing plate are arranged below the top plate, and the output end of a piston rod of each telescopic air cylinder is fixedly connected with the cold pressing plate. At least two layers of middle supporting plates are arranged between the base and the cold pressing plate, the two sides of each layer of middle supporting plate are each provided with two connecting parts, a through hole is formed in the center of each connecting part, and the size of each through hole is matched with the size of the corresponding four fixed connecting columns. And therefore, the middle supporting plate can move on the four fixed connecting columns in the vertical direction. According to the design, the multiple layers of middle supporting plates are arranged, cold pressing treatment can be conducted on the multiple LVLs at the same time under the same pressure condition, and the cold pressing efficiency of the LVLs is improved.

Description

Technical Field

[0001] This utility model relates to the field of artificial board processing equipment, and in particular to an LVL preform cold pressing device. Background Technology

[0002] In the production and processing of laminated veneer lumber (LVL), LVL preform cold pressing refers to the process of laying glued veneers in a certain number of layers parallel to the wood grain and then cold pressing them to form the final product. The purpose of preform cold pressing is to apply pressure to tightly bond the veneers before the glue cures, forming a preliminary laminated structure, and then perform hot pressing to achieve the best curing effect. Some LVLs are allowed to stand for a certain period of time after cold pressing to release internal stress and improve dimensional stability, thus meeting usage requirements and standards. In existing technology, the equipment for cold pressing LVLs usually uses veneer cold pressing, which is relatively slow. If multiple veneers are directly stacked together and cold pressed simultaneously, glue overflow may occur, causing the veneers to stick together, which will still slow down and reduce production efficiency. Utility Model Content

[0003] This invention addresses the technical problem of low efficiency during LVL cold pressing by providing a device that allows multiple LVLs to be assembled and cold pressed simultaneously.

[0004] To solve the above technical problems, this utility model provides an LVL billet cold pressing device, including a base and four fixed connecting columns. The upper surface of the base is rectangular, and the four fixed connecting columns are respectively distributed at the four corners of the base and fixedly connected to the base. A top plate is fixedly connected to the top of the four fixed connecting columns. A cold pressing plate and at least two telescopic cylinders are provided below the top plate. Each telescopic cylinder is fixedly connected to the top plate, and its piston rod output end is fixedly connected to the cold pressing plate.

[0005] At least two intermediate support plates are provided between the base and the cold-pressed plate. Each intermediate support plate has two connecting parts on each side. Each connecting part has a through hole in the center. The size of the through hole matches the size of the four fixed connecting columns to ensure that the intermediate support plate can move vertically along the four fixed connecting columns.

[0006] Preferably, in the above technical solution, a spring is provided between the connecting parts of each of the two adjacent intermediate support plates, one end of the spring is fixedly connected to the bottom of the connecting part of the upper intermediate support plate, and the other end is fixedly connected to the top of the connecting part of the lower intermediate support plate.

[0007] Preferably, in the above technical solution, each of the intermediate support plates and the base has a "door" shaped groove on its upper surface edge, and a lifting plate rectangular frame is provided above each of the intermediate support plates and the base. The size of the "door" shaped groove matches the size of the lifting plate rectangular frame so that the lifting plate rectangular frame can be embedded or fitted into the "door" shaped groove.

[0008] Preferably, in the above technical solution, each end of the opening of the "door" shaped groove is provided with a rectangular groove.

[0009] Preferably, in the above technical solution, each of the rectangular grooves is provided with a hinge, and the two blades of the hinge are respectively fixedly connected to the intermediate support plate and the lifting plate rectangular frame, thereby realizing the hinge connection between the intermediate support plate and the lifting plate rectangular frame.

[0010] Preferably, in the above technical solution, a handle is provided at the center of the side edge of the lifting plate rectangular frame.

[0011] Compared with the prior art, this utility model has the following advantages: By setting multiple intermediate support plates, multiple LVLs can be cold-pressed simultaneously under the same pressure conditions, improving the cold-pressing efficiency of LVLs. By setting lifting plate rectangular frames on the upper surface of the intermediate support plates and the base, the cold-pressed LVLs can be easily disassembled without affecting the cold-pressing effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an LVL preform cold pressing device according to the present invention;

[0013] Figure 2 This is a schematic diagram of the intermediate support plate in an LVL billet cold pressing device of this utility model;

[0014] Figure 3 This is a top view of the intermediate support plate in an LVL billet cold pressing device according to the present invention;

[0015] Figure 4 for Figure 1 Enlarged view of the connecting part and the fixed connecting post;

[0016] Figure 5 This is a schematic diagram showing the connection relationship between the hinge and the lifting plate rectangular frame in an LVL billet cold pressing device of this utility model.

[0017] Explanation of key figure labels:

[0018] 1-Base, 2-Top plate, 3-Retractable cylinder, 4-Cold-pressed plate, 5-Intermediate support plate, 6-Spring, 7-Lifting plate rectangular frame, 8-Hinge, 11-Fixed connecting column, 51-Connecting part, 52-Through hole, 53-"Door" shaped groove, 54-Rectangular groove, 71-Handle. Detailed Implementation

[0019] 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.

[0020] like Figures 1-4 As shown, this utility model discloses an LVL billet cold pressing device, comprising a base 1 and four fixed connecting columns 11. The upper surface of the base 1 is rectangular. The four fixed connecting columns 11 are distributed at the four corners of the base 1 and are fixedly connected to the base 1. A top plate 2 is fixedly connected to the top of the four fixed connecting columns 11. A cold pressing plate 4 and at least two telescopic cylinders 3 are provided below the top plate 2. Each telescopic cylinder 3 is fixedly connected to the top plate 2, and its piston rod output end is fixedly connected to the cold pressing plate 4. At least two layers of intermediate support plates 5 are provided between the base 1 and the cold pressing plate 4. Each layer of intermediate support plate 5 has two connecting parts 51 on each side. Each connecting part 51 has a through hole 52 in the center. The size of the through hole 52 matches the size of the four fixed connecting columns 11 to ensure that the intermediate support plate 5 can move vertically along the four fixed connecting columns 11. In this embodiment, the number of retractable cylinders 3 is preferably four, arranged in a rectangular shape below the top plate 2. When the four retractable cylinders 3 work simultaneously, they can apply uniform pressure to the cold pressing plate 4, and then apply uniform pressure to the multi-layer intermediate support plates 5, achieving the best cold pressing effect. The position and water volume of the retractable cylinders 3 can also be adjusted according to the specific size of the cold pressing plate 4 to ensure that the cold pressing effect is not affected. Between each pair of adjacent intermediate support plates 5, a spring 6 is provided between their respective connecting parts 51. One end of the spring 6 is fixedly connected to the bottom of the connecting part 51 of the upper layer of intermediate support plate 5, and the other end is fixedly connected to the top of the connecting part 51 of the lower layer of intermediate support plate 5. Before cold pressing, the spring 6 provides sufficient space for placing the plate, facilitating mechanical or manual placement of the glued veneer on the intermediate support plate 5 and the base 1. After cold pressing is completed, when the retractable cylinders 3 retract and drive the cold pressing plate 4 to rise, the spring force can support the upper layer of intermediate support plate 5. To provide sufficient space for disassembly, making it convenient for LVL disassembly work.

[0021] In this embodiment, as Figures 1-5 As shown, each of the intermediate support plates 5 and the base 1 has a "door"-shaped groove 53 on its upper surface edge. A lifting plate rectangular frame 7 is provided above each of the intermediate support plates 5 and the base 1. The size of the "door"-shaped groove 53 matches the size of the lifting plate rectangular frame 7 so that the lifting plate rectangular frame 7 can be embedded or fitted into the "door"-shaped groove 53. This ensures that the lifting plate rectangular frame 7 and the "door"-shaped groove 53 fit perfectly. When the lifting plate rectangular frame 7 falls into the "door"-shaped groove 53, its upper surface is at the same level as the upper surface of the intermediate support plate 5. Each end of the opening of the "door"-shaped groove 53 has a rectangular groove 54. Each rectangular groove 54 has a hinge 8. The two blades of the hinge 8 are fixedly connected to the support plate 5 and the lifting plate rectangular frame 7 respectively, thereby achieving a hinged connection between the intermediate support plate 5 and the lifting plate rectangular frame 7. A handle 71 is provided at the center of the outer edge of the lifting plate rectangular frame 7. After cold pressing is completed, the LVL will adhere to the intermediate support plate 5 due to the pressure. To remove the LVL from the intermediate support plate 5 or the base 1, simply push the handle 71 of the lifting plate rectangular frame 7 upward. The lifting plate rectangular frame 7 will rotate upward along the hinge axis, thereby lifting the LVL and making it easy to remove the cold-pressed LVL from the cold pressing equipment.

[0022] The multi-layer intermediate support plate of this invention allows for simultaneous cold pressing of multiple LVLs placed on the intermediate support plate under the same pressure conditions, thus improving the cold pressing efficiency of LVLs. By setting a lifting plate rectangular frame on the upper surface of the intermediate support plate and the base, the cold-pressed LVLs can be easily disassembled without affecting the cold pressing effect.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A LVL group cold pressing device, characterized in that: it comprises a base (1) and four fixed connecting columns (11), the upper surface of the base (1) is rectangular, the four fixed connecting columns (11) are respectively distributed on the four corners of the base (1) and are fixedly connected with the base (1), the top of the four fixed connecting columns (11) is fixedly connected with a top plate (2), the lower side of the top plate (2) is provided with a cold pressing plate (4) and at least two telescopic cylinders (3), each telescopic cylinder (3) is fixedly connected with the top plate (2), and the piston rod output end of each telescopic cylinder (3) is fixedly connected with the cold pressing plate (4); at least two layers of intermediate supporting plates (5) are arranged between the base (1) and the cold pressing plate (4), two connecting parts (51) are arranged on the two sides of each intermediate supporting plate (5), a through hole (52) is arranged in the center of each connecting part (51), the size of the through hole (52) is matched with the size of the four fixed connecting columns (11), so that the intermediate supporting plate (5) can move in the vertical direction along the four fixed connecting columns (11). A spring (6) is arranged between the connecting parts (51) of every two adjacent intermediate supporting plates (5), one end of the spring (6) is fixedly connected with the bottom of the connecting part (51) of the last layer of intermediate supporting plates (5), and the other end is fixedly connected with the top of the connecting part (51) of the next layer of intermediate supporting plates (5). The upper surface edge of each intermediate supporting plate (5) and the base (1) is provided with a "door" shaped groove (53), and a lifting plate rectangular frame (7) is arranged above each intermediate supporting plate (5) and the base (1), and the size of the "door" shaped groove (53) is matched with the size of the lifting plate rectangular frame (7), so that the lifting plate rectangular frame (7) can be embedded or matched in the "door" shaped groove (53).

2. The LVL group cold pressing device according to claim 1, characterized in that: A rectangular groove (54) is arranged at each opening end of the "door" shaped groove (53).

3. The LVL group cold pressing device according to claim 1, characterized in that: A hinge (8) is arranged in each rectangular groove (54), two leaves of the hinge (8) are respectively fixedly connected with the intermediate supporting plate (5) and the lifting plate rectangular frame (7), so as to realize the hinging between the intermediate supporting plate (5) and the lifting plate rectangular frame (7).

4. The LVL group cold pressing device according to claim 3, characterized in that: A handle (71) is arranged at the central position of the outer side edge of the lifting plate rectangular frame (7).

5. The LVL group cold pressing device according to claim 4, characterized in that: ​ 6. The LVL layup cold pressing apparatus according to claim 5, wherein: ​

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