Fiberboard heating and pressurizing device

Abstract

The utility model discloses a fiberboard heating and pressurizing device which comprises a pressing table, a shell is welded and installed on the outer edge of the upper end face of the pressing table, a hydraulic lifting device is fixedly installed at the upper end in the shell, a lifting plate is installed at the lower end of the hydraulic lifting device, and a pressing plate is installed at the bottom of the lifting plate. The heat insulation cover storage bin is arranged on the outer edge of the upper end face of the lifting plate, a sealing heat insulation cover is installed in the heat insulation cover storage bin, the upper end of the sealing heat insulation cover is in sliding connection with the heat insulation cover storage bin, and a supporting spring is fixedly installed between the heat insulation cover storage bin and the sealing heat insulation cover; and the sealing groove is formed in the position, perpendicularly corresponding to the sealing heat insulation cover, of the upper end face of the pressing table, four annularly-distributed through holes are formed in the positions, located on the inner side of the sealing groove, of the pressing table, ejector rods are slidably installed in the through holes, and the problem that the heating and pressurizing device heats the fiberboard through a pressing plate, and the heat permeation effect is poor is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fiberboard processing devices, in particular to a fiberboard heating and pressing device. Background Technique

[0002] The fiberboard heating and pressing device generally refers to the electro-heated mold temperature controller of a hot press. The main function of this device in the hot pressing of density fiberboard is to provide a suitable platen temperature, so that the platen fibers are softened by thermoplasticity during the hot pressing process and are easy to compress. During the hot pressing process of density fiberboard, the temperature needs to be rapidly increased in the preheating stage to transfer heat to the inside of the blank. At the end of the process, this device will help the slab to heat up, accelerate the drainage inside the slab, and ensure that the hot pressing temperature is constant within the specified time until the end of the hot pressing time. Using this device can stabilize the quality of density fiberboard and ensure the durability and repeatability of the process.

[0003] For example, in the Chinese authorized patent "A Heating and Temperature-Raising Device for Fiberboard Manufacturing" with the publication number CN211492034U, there are columns arranged above the base, and there are four columns. A pressing plate is arranged between the four columns. An upper fixing plate is arranged above the columns. A pressing cylinder seat is arranged above the fixing plate. A pressing cylinder is arranged above the pressing cylinder seat. The output end of the pressing cylinder penetrates and extends to the outside of the fixing plate. Guide rods are arranged on both sides of the pressing cylinder, and one end of each guide rod penetrates and extends to the outside of the fixing plate. A first movable rod is arranged on one side of the guide rod, and one end of the first movable rod penetrates and extends to the outside of the fixing plate. A second movable rod is arranged on the other side of the guide rod, and the second movable rod penetrates and extends to the outside of the fixing plate.

[0004] Although the above-mentioned prior art can realize the heating and pressing of fiberboard, the heat penetration effect is poor by relying on the platen to heat the fiberboard, and the uniformity of heat distribution is also poor, thus affecting the pressing effect of the fiberboard. Therefore, it does not meet the existing requirements. For this reason, we propose a fiberboard heating and pressing device. Content of the Utility Model

[0005] The purpose of the utility model is to provide a fiberboard heating and pressing device to solve the problem that the heat penetration effect of the heating and pressing device is poor by relying on the platen to heat the fiberboard as mentioned in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A fiberboard heating and pressing device, including a pressing table, an outer shell is welded and installed on the outer edge of the upper end surface of the pressing table, and the outer shell is provided with an opening facing forward. A hydraulic lifting device is fixedly installed at the upper end inside the outer shell. A lifting plate is installed at the lower end of the hydraulic lifting device, and the lifting plate is fixedly connected to the hydraulic lifting device by bolts. A pressing plate is installed at the bottom of the lifting plate, and the pressing plate is fixedly connected to the lifting plate by bolts. Support frames are welded and fixed at the four corners of the bottom of the pressing table; Further included are:

[0007] A heat insulation cover storage bin, which is arranged on the outer edge of the upper end surface of the lifting plate. A sealed heat insulation cover is installed inside the heat insulation cover storage bin. The upper end of the sealed heat insulation cover is slidably connected to the heat insulation cover storage bin. The lower end of the sealed heat insulation cover penetrates through the lifting plate, and the pressing plate is located inside the sealed heat insulation cover. A support spring is fixedly installed between the heat insulation cover storage bin and the sealed heat insulation cover;

[0008] A sealing groove, which is arranged at a position on the upper end surface of the pressing table vertically corresponding to the sealed heat insulation cover, and the sealed heat insulation cover is inserted and matched with the sealing groove. Four annularly distributed through holes are arranged inside the pressing table on the inner side of the sealing groove. A push rod is slidably installed inside the through holes.

[0009] Preferably, when the lifting plate is in the lifted state, the lower end surface of the sealed heat insulation cover is lower than the bottom of the pressing plate.

[0010] Preferably, electric heating devices are installed on both the front and back of the inner wall of the sealed heat insulation cover. A temperature sensor is installed on one side of the inner wall of the sealed heat insulation cover. The signal output end of the temperature sensor is connected to a processor, and the signal output end of the processor is connected to the electric heating device.

[0011] Preferably, a storage cavity is arranged inside the pressing table. An adjusting block is slidably installed inside the storage cavity. The lower end surface of the push rod is fixed to the adjusting block. A servo motor is installed at the bottom of the pressing table. A screw column is installed on the output shaft of the servo motor. The upper end of the screw column extends into the adjusting block, and the screw column is in threaded cooperation with the adjusting block.

[0012] Preferably, guide columns are fixedly installed between the four corners of the pressing table and the top plate of the outer shell. The guide columns penetrate through the lifting plate, and the guide columns are slidably limited to the lifting plate.

[0013] Preferably, a rubber sheet is adhered to the inner wall of the sealing groove.

[0014] Preferably, when the pressing plate is in the hot pressing working condition, the upper end surface of the push rod is lower than the horizontal plane of the pressing table.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. The utility model is provided with a sealing and heat-insulating cover. The lower end face of the sealing and heat-insulating cover is lower than the pressing plate. Therefore, during the pressing process, as the hydraulic lifting device drives the lifting plate to descend, the sealing and heat-insulating cover preferentially enters the sealing groove of the pressing table. With the reaction force of the supporting spring on the sealing and heat-insulating cover, it forms a wrapping around the pressing plate, the fiberboard, and the working area of the pressing table. At this time, the electric heating device is turned on to convert electrical energy into heat energy and heat the inside of the sealing and heat-insulating cover, so that the internal temperature rises rapidly. The temperature in this area can contact the pressing plate, the fiberboard, and the working area of the pressing table in all directions, which can not only improve the heating uniformity but also improve the heat penetration effect, thus quickly bringing the fiberboard to the pressing temperature. Under the monitoring of the temperature sensor and in cooperation with the processor, the inside of the sealing and heat-insulating cover is maintained within the set range, thereby ensuring the uniformity of the heating temperature.

[0017] 2. The utility model is provided with a fiberboard lifting mechanism. Before heating, the fiberboard is placed at the designated position on the pressing table. Then the servo motor is turned on, and its output shaft drives the stud to rotate, generating friction with the internal thread hole of the adjusting block. With the guiding effect of the lower groove of the receiving cavity on the adjusting block, the adjusting block drives the ejector rod to rise from the through hole of the pressing table, contact the bottom of the fiberboard and lift it, so that a fixed gap is maintained between its bottom and the pressing table. Then after the sealing and heat-insulating cover wraps the whole, heat can penetrate from the bottom of the fiberboard, further improving the heating uniformity of the fiberboard.

[0018] 3. The utility model drives the lifting of the pressing plate by using the hydraulic lifting device. When the hydraulic lifting device is in the first state, the sealing and heat-insulating cover is separated from the pressing table. At this time, it can be used to pick up and place the fiberboard. When the hydraulic lifting device is in the second state, the sealing and heat-insulating cover is driven to descend by the lifting plate. After the sealing and heat-insulating cover enters the sealing groove, it enters the heating working condition. At this time, the pressing plate does not contact the fiberboard. When the hydraulic lifting device is in the third state, it drives the pressing plate to continue to descend to realize the hot pressing of the fiberboard. With the limiting effect of the guiding column on the lifting plate, the stability of the overall pressing process is improved, thereby ensuring the hot pressing quality of the fiberboard. Description of the Drawings

[0019] Figure 1 is a three-dimensional view of the utility model;

[0020] Figure 2 is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3 is a schematic diagram of the structure of the pressing table in the state of heating the fiberboard of the utility model;

[0022] Figure 4 is of the utility model Figure 2 partial enlarged view of area A therein.

[0023] In the figure: 1, pressing table; 2, outer shell; 3, lifting plate; 4, sealed heat insulation cover; 5, sealing groove; 6, through hole; 7, ejector rod; 8, heat insulation cover storage bin; 9, hydraulic lifting device; 10, guide post; 11, support frame; 12, electric heating device; 13, temperature sensor; 14, support spring; 15, servo motor; 16, stud; 17, adjusting block; 18, storage cavity; 19, pressing plate. Detailed implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] Please refer to Figures 1-4 , an embodiment provided by the present invention: a fiberboard heating and pressing device, including a pressing table 1, an outer shell 2 is welded and installed on the outer edge of the upper end surface of the pressing table 1, and the outer shell 2 is provided with an opening facing forward. A hydraulic lifting device 9 is fixedly installed at the upper end inside the outer shell 2. The lower end of the hydraulic lifting device 9 is installed with a lifting plate 3, and the lifting plate 3 is fixedly connected to the hydraulic lifting device 9 by bolts. A pressing plate 19 is installed at the bottom of the lifting plate 3, and the pressing plate 19 is fixedly connected to the lifting plate 3 by bolts. Support frames 11 are welded and fixed at the four corners of the bottom of the pressing table 1; further included are:

[0026] A heat insulation cover storage bin 8, which is arranged on the outer edge of the upper end surface of the lifting plate 3. A sealed heat insulation cover 4 is installed inside the heat insulation cover storage bin 8. The upper end of the sealed heat insulation cover 4 is slidably connected to the heat insulation cover storage bin 8. The lower end of the sealed heat insulation cover 4 penetrates through the lifting plate 3, and the pressing plate 19 is located inside the sealed heat insulation cover 4. A support spring 14 is fixedly installed between the heat insulation cover storage bin 8 and the sealed heat insulation cover 4;

[0027] A sealing groove 5, which is arranged at a position on the upper end surface of the pressing table 1 corresponding vertically to the sealed heat insulation cover 4, and the sealed heat insulation cover 4 is inserted and matched with the sealing groove 5. Four annularly distributed through holes 6 are arranged inside the pressing table 1 at the inner side of the sealing groove 5. Ejector rods 7 are slidably installed inside the through holes 6.

[0028] During use, the lower end surface of the sealed heat insulation cover 4 is lower than the pressing plate 19. Therefore, during the pressing process, as the hydraulic lifting device 9 drives the lifting plate 3 to descend, the sealed heat insulation cover 4 first enters the sealing groove 5 of the pressing table 1. With the reaction force of the support spring 14 on the sealed heat insulation cover 4, it forms a package for the pressing plate 19, the fiberboard, and the working area of the pressing table 1. At this time, the electric heating device 12 is turned on to convert electrical energy into heat energy to heat the inside of the sealed heat insulation cover 4, so that the internal temperature rises rapidly, and the temperature in this area can be in full contact with the pressing plate 19, the fiberboard, and the working area of the pressing table 1.

[0029] Please refer to Figure 2 , when the lifting plate 3 is in the lifted state, the lower end surface of the sealing heat insulation cover 4 is lower than the bottom of the pressing plate 19, which is convenient for contacting the pressing table 1 first, thereby improving the sealing performance.

[0030] Please refer to Figure 2 , electric heating devices 12 are installed at the front and back of the inner wall of the sealing heat insulation cover 4, a temperature sensor 13 is installed on one side of the inner wall of the sealing heat insulation cover 4, the signal output end of the temperature sensor 13 is connected to the processor, and the signal output end of the processor is connected to the electric heating device 12. Under the monitoring of the temperature sensor 13 and in cooperation with the processor, the inside of the sealing heat insulation cover 4 is maintained within a set range, thereby ensuring the uniformity of the heating temperature.

[0031] Please refer to Figure 2 and Figure 4 , a receiving cavity 18 is provided inside the pressing table 1, an adjusting block 17 is slidably installed inside the receiving cavity 18, and the lower end surface of the ejector rod 7 is fixed to the adjusting block 17. A servo motor 15 is installed at the bottom of the pressing table 1, a screw column 16 is installed on the output shaft of the servo motor 15, the upper end of the screw column 16 extends into the adjusting block 17, and the screw column 16 is in threaded cooperation with the adjusting block 17. The ejector rod 7 contacts the bottom of the fiber board and lifts it, so that a fixed gap is maintained between its bottom and the pressing table 1.

[0032] Please refer to Figure 1 , guide columns 10 are fixedly installed between the four corners of the pressing table 1 and the top plate of the outer shell 2. The guide columns 10 penetrate through the lifting plate 3, and the guide columns 10 are slidably limited to the lifting plate 3, improving the stability of the overall pressing process, thereby ensuring the hot pressing quality of the fiber board.

[0033] Furthermore, a rubber sheet is adhered to the inner wall of the sealing groove 5 to improve the connection sealing performance.

[0034] Furthermore, when the pressing plate 19 is in the hot pressing condition, the upper end surface of the ejector rod 7 is lower than the horizontal plane of the pressing table 1.

[0035] Working principle: When in use, when the hydraulic lifting device 9 is in the first state, the sealing and heat-insulating cover 4 is separated from the pressing table. At this time, it can be used to pick up and place the fiberboard. When the hydraulic lifting device 9 is in the second state, the servo motor 15 is turned on, and its output shaft drives the stud 16 to rotate, generating friction with the internal screw hole of the adjusting block 17. With the guiding effect of the lower groove of the receiving cavity 18 on the adjusting block 17, the adjusting block 17 drives the ejector rod 7 to rise from the through hole 6 of the pressing table 1, contact the bottom of the fiberboard and lift it, so that a fixed gap is maintained between its bottom and the pressing table 1. Then, after the sealing and heat-insulating cover 4 wraps the whole, heat can penetrate from the bottom of the fiberboard. By driving the sealing and heat-insulating cover 4 to descend through the lifting plate 3, after the sealing and heat-insulating cover 4 enters the sealing groove 5, it enters the heating working condition. At this time, the pressing plate 19 does not contact the fiberboard. When the hydraulic lifting device is in the third state, the pressing plate 19 is driven to continue to descend to realize the hot pressing of the fiberboard.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A fiberboard heating and pressing device, comprising a pressing table (1). An outer shell (2) is welded and installed on the outer edge of the upper end surface of the pressing table (1), and the outer shell (2) has an opening facing forward. A hydraulic lifting device (9) is fixedly installed at the upper end inside the outer shell (2). A lifting plate (3) is installed at the lower end of the hydraulic lifting device (9), and the lifting plate (3) is fixed to the hydraulic lifting device (9) by bolts. A pressing plate (19) is installed at the bottom of the lifting plate (3), and the pressing plate (19) is fixed to the lifting plate (3) by bolts. Support frames (11) are welded and fixed at the four corners of the bottom of the pressing table (1). It is characterized in that: It further includes: A heat insulation cover storage bin (8), which is arranged on the outer edge of the upper end surface of the lifting plate (3). A sealed heat insulation cover (4) is installed inside the heat insulation cover storage bin (8). The upper end of the sealed heat insulation cover (4) is slidably connected to the heat insulation cover storage bin (8). The lower end of the sealed heat insulation cover (4) penetrates through the lifting plate (3), and the pressing plate (19) is located inside the sealed heat insulation cover (4). A support spring (14) is fixedly installed between the heat insulation cover storage bin (8) and the sealed heat insulation cover (4). A sealing groove (5), which is arranged at the position on the upper end surface of the pressing table (1) vertically corresponding to the sealed heat insulation cover (4), and the sealed heat insulation cover (4) is inserted and matched with the sealing groove (5). Four through holes (6) distributed in a ring are arranged inside the pressing table (1) on the inner side of the sealing groove (5). A push rod (7) is slidably installed inside the through hole (6).

2. The fiberboard heating and pressing device according to claim 1, characterized in that: When the lifting plate (3) is in the lifted state, the lower end surface of the sealed heat insulation cover (4) is lower than the bottom of the pressing plate (19).

3. A fiberboard heating and pressing device according to claim 1, characterized in that: Electric heating devices (12) are installed on both the front and back of the inner wall of the sealed heat insulation cover (4). A temperature sensor (13) is installed on one side of the inner wall of the sealed heat insulation cover (4). The signal output end of the temperature sensor (13) is connected to a processor, and the signal output end of the processor is connected to the electric heating device (12).

4. A fiberboard heating and pressing device according to claim 1, characterized in that: A storage cavity (18) is arranged inside the pressing table (1). An adjusting block (17) is slidably installed inside the storage cavity (18), and the lower end surface of the push rod (7) is fixed to the adjusting block (17). A servo motor (15) is installed at the bottom of the pressing table (1). A screw rod (16) is installed on the output shaft of the servo motor (15). The upper end of the screw rod (16) extends into the adjusting block (17), and the screw rod (16) is in threaded cooperation with the adjusting block (17).

5. A fiberboard heating and pressing device according to claim 1, characterized in that: Guide columns (10) are fixedly installed between the four corners of the pressing table (1) and the top plate of the outer shell (2). The guide columns (10) penetrate through the lifting plate (3), and the guide columns (10) are slidably limited to the lifting plate (3).

6. A fiberboard heating and pressing device according to claim 1, characterized in that: A rubber sheet is adhered to the inner wall of the sealing groove (5).

7. A fiberboard heating and pressing device according to claim 4, characterized in that: When the pressing plate (19) is in the hot pressing working condition, the upper end surface of the push rod (7) is lower than the horizontal plane of the pressing table (1).

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