A continuous cold press for artificial boards

Abstract

The patent of the present invention belongs to the technical field of artificial board production equipment, and specifically relates to a continuous cold press machine for artificial boards, including a frame, an upper steel belt, a lower steel belt and a hydraulic system, and also includes a cold press plate assembly installed on the frame, the cold press plate assembly includes a cold press plate and a chain blanket, and the cold press plate assembly is symmetrically arranged in two sets, upper and lower; a cooling internal circulation pipeline is provided in the cold press plate; the hydraulic system is installed on the frame and the maximum unit pressure acting on the plate is 4.5-7MPa; compared with the prior art, the continuous cold press machine for artificial boards of the present invention can be arranged after the continuous hot press machine, and the semi-finished board after hot pressing is continuously cold pressed. During the cold pressing process, the board temperature drops to room temperature, and the density and strength indicators of the artificial boards after continuous cold pressing are better; the technical problems caused by the simultaneous provision of hot pressing section and cold pressing section in a continuous press in the prior art are overcome; the design pressure of the hydraulic system is large, which can meet the needs of improving the quality of artificial boards.

Description

Technical Field

[0001] The patent of this invention belongs to the technical field of artificial board production equipment, and specifically relates to a continuous cold press machine for artificial boards. Background Art

[0002] Artificial fiberboard is generally produced by continuous hot press, and the boards after hot pressing enter the curing, sanding and cutting processes. The continuous hot press produces fiberboard and other boards. After the board leaves the press, the temperature of the board is still above 100°C, the glue is not completely cured, and the steam rebound force still exists. After the board leaves the hot press and is freed from the constraints of pressure, the thickness will still rebound, the product density will decrease, and the structure will be damaged, which has a great impact on the quality of the board and directly affects the density and performance of the board. In addition, after the board leaves the hot press, it is extremely easy to cause deformation of the board during the later transportation and cooling process, which will cause irreversible quality defects to the board. Therefore, in order to improve the quality of artificial fiberboard, it is necessary to configure a cold press after the continuous hot press.

[0003] In the prior art, there is a continuous press that performs hot pressing first and then cold pressing, that is, a hot pressing section and a cold pressing section are provided on one continuous press. Since the continuous press uses a steel belt and a chain blanket, the heat of the hot pressing section will radiate to the cold pressing section, resulting in poor heat-cold conversion efficiency, poor cooling effect, waste of time, and extended product production cycle. In addition, the design pressure of the cooling section is too low to meet the production process requirements of this special plate. Summary of the invention

[0004] In view of the above problems, the present invention provides a continuous cold press for artificial boards.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a continuous cold press machine for artificial boards, including a frame, an upper steel belt, a lower steel belt and a hydraulic system, and also including a cold press plate assembly installed on the frame, the cold press plate assembly includes a cold press plate and a chain blanket, and the cold press plate assembly is symmetrically arranged in two sets, upper and lower; a cooling internal circulation pipeline is provided in the cold press plate; the hydraulic system is installed on the frame and the maximum unit pressure acting on the processed plate is 4.5-7MPa.

[0006] Preferably, it also includes a cold press feed head, which includes a guide roller, a steel belt rotating roller), and a wedge-shaped inlet adjustment device; the cold press feed head is located at the feeding end of the continuous cold press; the cold press feed head receives the semi-finished sheet material after hot pressing by the continuous hot press; and a transition device is provided between the cold press feed head and the continuous hot press.

[0007] Preferably, the cooling internal circulation pipeline is arranged in a serpentine shape inside the cold pressing plate.

[0008] Preferably, the cooling internal circulation pipeline is connected to an external cooling liquid circulation system.

[0009] Preferably, a chain blanket is installed on the side of the cold pressing plate close to the processed plate.

[0010] Preferably, the upper steel belt and the lower steel belt are

[0011] Preferably, a displacement detection device is also included.

[0012] Preferably, a plurality of cavities are provided in the cold-pressed plate body near the upper and lower ends.

[0013] Preferably, the chain blanket comprises a ball bearing set and a roller shaft.

[0014] Preferably, it also includes a steel belt tensioning device and a steel belt deviation adjusting device.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are:

[0016] Compared with the prior art, the continuous cold press machine for artificial boards of the present invention can (1) be arranged after the continuous hot press machine to continue to perform continuous cold pressing on the boards. During the cold pressing process, the board temperature drops to room temperature, and the density and strength indicators of the artificial boards after continuous cold pressing are better; (2) it overcomes the technical problems caused by the simultaneous provision of hot pressing and cold pressing sections in a continuous press machine in the prior art; and (3) the hydraulic system has a high design pressure, which can meet the needs of improving indicators such as the density and strength of artificial boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following briefly introduces the drawings required for describing the embodiment. Figure 1 Schematic diagram of the continuous cold press for artificial boards provided in Example 1, Figure 2 Schematic diagram of cold press feed head, Figure 3 This is a schematic diagram of the internal cooling cycle of the cold press plate. Figure 4 This is a schematic diagram of the longitudinal section of the cold-pressed plate. Figure 5 This is the structural diagram of the cold pressed plate assembly.

[0018] 1—frame, 2—cold press plate, 3—upper driving roller, 4—upper driven roller, 5—upper steel belt, 6—lower driving roller, 7—lower driven roller, 8—lower steel belt, 9—hydraulic system, 10—chain blanket, 11—displacement detection device, 12—cold press feed head, 21—cooling internal circulation pipeline, 22—cavity, 121—steel belt rotating roller, 122—wedge-shaped inlet adjustment device, 123—guide roller, 13—continuous hot press, 14—transition device. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] Example 1

[0022] The following is combined with Figure 1-5 The present invention is further described as follows: a continuous cold press for artificial boards, such as Figure 1 As shown, it includes a frame 1, an upper steel belt 5, a lower steel belt 8 and a hydraulic system 9, and also includes a cold press plate assembly installed on the frame 1, the cold press plate assembly includes a cold press plate 2 and a chain blanket 10, and the cold press plate assembly is symmetrically arranged in two sets, upper and lower; a cooling internal circulation pipeline 21 is provided in the cold press plate; the hydraulic system 9 is installed on the frame 1 and the maximum unit pressure acting on the plate is 4.5-7MPa.

[0023] like Figure 1 and 2 As shown, the continuous cold press machine for artificial boards also includes a cold press feed head 12, which includes a guide roller 123, a steel belt rotating roller 121, and a wedge-shaped inlet adjustment device 122; the cold press feed head 12 is located at the feeding end of the continuous cold press; the cold press feed head 12 receives the semi-finished board material after hot pressing by the continuous hot press 13; and a transition device 14 is provided between the cold press feed head 12 and the continuous hot press 13.

[0024] The upper steel belt 5 is wrapped around the upper driving roller 3, the upper driven roller 4 and the outer side of the upper steel belt rotating roller 121 to form a circulation loop; the lower steel belt 8 is wrapped around the lower driving roller 6, the lower driven roller 7 and the outer side of the lower steel belt rotating roller 121 to form a circulation loop.

[0025] The semi-finished sheet entering the continuous cold press has been subjected to heat compression by the continuous hot press 13, and the thickness of the sheet is greatly reduced. Therefore, a pair of steel belt rotating rollers 121 are provided on the side of the upper driven roller 4 / lower driven roller 7 close to the continuous hot press 13. The feeding gap between the pair of steel belt rotating rollers 121 is adapted to the thickness of the semi-finished sheet. In order to facilitate the adjustment of the inlet angle of the continuous cold press and achieve early bonding of the steel belt and the semi-finished sheet, a pair of symmetrically distributed wedge-shaped inlet adjustment devices 122 are provided behind the steel belt rotating roller 121. The longitudinal section of the wedge-shaped inlet adjustment device 122 is trapezoidal and the cross section is rectangular; the opening between the upper and lower wedge-shaped inlet adjustment devices 122 gradually decreases from the steel belt rotating roller 121 side to the cold press side; after the semi-finished sheet passes through the steel belt rotating roller 121 and enters the continuous cold press, the upper / lower wedge-shaped inlet adjustment devices 122 apply pressure to the steel belt, so that the semi-finished sheet is bonded to the steel belt and enters the following continuous cold press link with the steel belt.

[0026] like Figure 3As shown, the cooling inner circulation pipeline 21 is arranged in a serpentine shape inside the cold pressing plate 2. The cooling inner circulation pipeline 21 is connected to the cooling liquid (cooling water) external circulation system, and the cooling water external circulation system includes a cooling water pool and a cooling tower, which circulates and cools down to ensure that the temperature difference between the product and the ambient temperature after leaving the continuous cold press does not exceed ±10°C. The cooling efficiency is adjusted by adjusting the cooling water flow and the running speed of the production line.

[0027] like Figure 5 As shown, a chain blanket 10 is installed on one side of the cold press plate 2 close to the plate. The chain blanket 10 includes a ball bearing group and a roller shaft, which is a prior art.

[0028] like Figure 1 As shown, the upper steel belt 5 and the lower steel belt 8 are driven by a driving assembly respectively, and the driving assembly includes a driving roller (an upper driving roller 3 and a lower driving roller 6) and a driven roller (an upper driven roller 4 and a lower driven roller 7).

[0029] The upper steel belt 5 and the lower steel belt 8 clamp the semi-finished plate and pass through the gap between the cold press plate components. Figure 1 The middle steel belt rotating roller 121 serves as the input end of the semi-finished plate. The semi-finished plate to be processed enters the cold pressing plate assembly under the guidance of the upper and lower steel belts, thereby carrying out the corresponding cold pressing operation. Since the upper and lower steel belts can operate in a cycle, this equipment can ensure the continuity of the cold pressing operation of the semi-finished artificial board.

[0030] like Figure 1 As shown, the continuous cold press also includes a displacement detection device for detecting the amount of cold pressing on the plate.

[0031] like Figure 4 As shown, a plurality of cavities 22 are provided in the cold press plate 2 near the upper and lower ends.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A continuous cold press for artificial boards, comprising a frame (1), an upper steel belt (5), a lower steel belt (8) and a hydraulic system (9), characterized in that: It also includes a cold press plate assembly mounted on the frame (1), the cold press plate assembly including a cold press plate (2) and a chain blanket (10), the cold press plate assembly being symmetrically arranged in two sets, upper and lower; a cooling internal circulation pipeline (21) is provided inside the cold press plate (2); the hydraulic system (9) is mounted on the frame (1) and the maximum unit pressure acting on the plate is 4.5-7Mpa; The continuous cold press machine for artificial boards also includes a cold press feed head (12), which includes a guide roller (123), a steel belt rotating roller (121), and a wedge-shaped inlet adjustment device (122); the cold press feed head (12) is located at the feeding end of the continuous cold press; the cold press feed head (12) receives the semi-finished board after being hot-pressed by the continuous hot press (13); a transition device (14) is provided between the cold press feed head (12) and the continuous hot press (13); the cooling internal circulation pipeline (21) is arranged in a serpentine shape inside the cold press plate (2); and the cooling internal circulation pipeline (21) is externally connected to a cooling liquid external circulation system.

2. The continuous cold press machine for artificial boards according to claim 1, characterized in that: A chain blanket (10) is installed on the side of the cold pressing plate (2) close to the processed plate.

3. The continuous cold press machine for artificial boards according to claim 1, characterized in that: The upper steel belt (5) and the lower steel belt (8) are driven by a driving assembly respectively, and the driving assembly comprises a driving roller (3, 6) and a driven roller (4, 7).

4. The continuous cold press machine for artificial boards according to claim 1, characterized in that: It also includes a displacement detection device (11).

5. The continuous cold press machine for artificial boards according to claim 1, characterized in that: A plurality of cavities (22) are arranged in the cold pressing plate (2) near the upper and lower ends.

6. The continuous cold press machine for artificial boards according to claim 1, characterized in that: The chain blanket (10) comprises a ball bearing set and a roller shaft.

7. The continuous cold press machine for artificial boards according to claim 1, characterized in that: It also includes a steel belt tensioning device and a steel belt deviation adjusting device.

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