Double coil induction heating wood board hot press and heating method thereof

Abstract

The present invention discloses a double-coil induction heating wood board hot press, comprising a frame, an upper hot pressing plate movable along the height direction of the frame is arranged on the frame; an oil cylinder is arranged on the frame, and the oil cylinder piston rod of the oil cylinder is connected to the top of the upper hot pressing plate; a workbench is arranged on the frame, and the front half of the workbench is a loading area, and the loading bin is a rectangular hollow structure and can slide along the length direction of the workbench through a driving unit. On the one hand, the present invention divides the workbench into a loading area, a pressing bin and a unloading area and cooperates with a lifting unit and a driving unit to make the hot pressing and loading processes proceed simultaneously, and when the second feeding is carried out, the formed board is simultaneously sent to the unloading area, which effectively improves the work efficiency; on the other hand, the upper hot pressing plate and the lower hot pressing plate are heated by the coil, which effectively avoids the problem of coking after the heating tube is overheated. It has the beneficial effects of simple structure, low manufacturing cost, easy operation and not easy to damage.

Description

Technical Field

[0001] The invention relates to a hot press, in particular to a double-coil induction heating type wood board hot press and a heating method thereof. Background Art

[0002] In the process of wood processing, a wooden board hot pressing device is usually used to hot-press the wood chips into shape. On the one hand, the existing hot pressing device has a complex structure and high manufacturing and maintenance costs; on the other hand, the heating efficiency is low and it is not easy to remove the heated and formed wooden board; on the other hand, the heating plate is heated by oil circulation, which will cause the heating tube to overheat and coke.

[0003] Therefore, those skilled in the art are committed to developing a double-coil induction heating wood board hot press and a heating method thereof that can effectively improve the hot pressing efficiency. Summary of the invention

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a double-coil induction heating wood board hot press and a heating method thereof which can effectively improve the hot pressing efficiency.

[0005] To achieve the above-mentioned object, the present invention provides a double-coil induction heating wood board hot press, comprising a frame, on which an upper hot press plate movable along the height direction of the frame is arranged; an oil cylinder is arranged on the frame, and an oil cylinder piston rod of the oil cylinder is connected to the top end of the upper hot press plate;

[0006] A workbench is arranged on the frame, the front half of the workbench is a loading area, the rear half of the workbench is a unloading area, a pressing bin is arranged between the loading area and the unloading area, a lower hot pressing plate used in conjunction with the upper hot pressing plate is arranged in the pressing bin, the lower hot pressing plate can move up and down in the pressing bin through a lifting unit, and the lifting unit is arranged on the frame;

[0007] The frame is provided with a loading bin used in conjunction with the workbench. The loading bin is a rectangular hollow structure and can slide along the length direction of the workbench through a driving unit.

[0008] Preferably, the frame includes a first rectangular frame and a second rectangular frame, the number of the oil cylinders is two, each of the oil cylinders is located between the first rectangular frame and the second rectangular frame and is connected to the first rectangular frame and the second rectangular frame at the same time through an oil cylinder mounting seat;

[0009] The pressing bin is supported by the first rectangular frame and the second rectangular frame, and the loading area and the unloading area extend out of the frame respectively.

[0010] Preferably, the first rectangular frame and the second rectangular frame are arranged on the base;

[0011] The lifting unit includes two cylinders, each of which is arranged on a base and located between the first rectangular frame and the second rectangular frame, and the cylinder piston rod on each of the cylinders is connected to the bottom end of the lower hot pressing plate through a connecting plate.

[0012] Preferably, the bottom ends of the first rectangular frame and the second rectangular frame are detachably connected to the base via a plurality of columns;

[0013] Preferably, a support seat is provided on the base, and the support seat is located between the cylinders, and the upper end of the support seat is in contact with the lower end of the lower hot pressing plate.

[0014] Preferably, the driving unit comprises two long strip mounting plates, and the inner side of each of the long strip mounting plates is respectively connected to the two sides of the upper bin;

[0015] A rack is provided on the outer side of each of the long strip mounting plates; two motors are provided between the first rectangular frame and the second rectangular frame, and the loading bin is located between the two motors; each of the motors is provided on each of the first positioning seats through a mounting frame, and both ends of each of the first positioning seats are connected to the first rectangular frame and the second rectangular frame respectively;

[0016] The output shaft of the motor can rotatably pass through the first positioning seat through a rotating rod and is rotatably connected to the second positioning seat. The two ends of the second positioning seat are respectively connected to the first rectangular frame and the second rectangular frame. A toothed disc used in conjunction with the rack is arranged between the first positioning seat and the second positioning seat, and the toothed disc is sleeved on the rotating rod.

[0017] Preferably, a heating chamber is provided in the upper hot pressing plate and the lower hot pressing plate, and a coil for heating the upper hot pressing plate and the lower hot pressing plate is provided in the heating chamber;

[0018] Each of the racks is detachably connected to the long strip mounting plate via a plurality of mounting blocks.

[0019] Preferably, a plurality of grooves are provided on both sides of the first rectangular frame and the second rectangular frame; and the upper ends of the loading area, the pressing bin and the unloading area are flush.

[0020] The heating method of the double-coil induction heating wood board hot press comprises the following steps:

[0021] S1: The motor drives the gear disc to rotate, thereby driving the loading bin to the loading area;

[0022] S2: placing the raw materials to be hot-pressed into the loading bin to complete loading;

[0023] S3: The motor pushes the loading bin to the top of the pressing bin, and the raw materials to be hot-pressed fall into the pressing bin.

[0024] S4: The loading bin is brought back to the loading area by the motor;

[0025] S5: After heating the upper hot pressing plate and the lower hot pressing plate, the upper hot pressing plate is pushed downward by the oil cylinder, so that the upper hot pressing plate cooperates with the lower hot pressing plate to perform hot pressing forming on the raw material to be hot pressed;

[0026] S6: Take out the thermoformed plate.

[0027] Preferably, a heating chamber is provided in the upper hot pressing plate and the lower hot pressing plate, and the upper hot pressing plate and the lower hot pressing plate are heated by the coil in the heating chamber, and the upper hot pressing plate and the lower hot pressing plate are heated to 135°-140° and then the heating is stopped for hot pressing;

[0028] In S6, the specific operation steps of taking out the hot press formed plate are:

[0029] SS1: The lower hot pressing plate is pushed upward by the cylinder, and the hot pressing forming plate moves upward with the lower hot pressing plate until the bottom end of the hot pressing forming plate is flush with the top end of the workbench, and the raw materials to be hot pressed are placed in the upper bin;

[0030] SS2: The upper bin is moved toward the pressing bin by a motor, and the upper bin pushes the hot press forming plate toward the lower feeding area while the hot press forming plate moves to the lower feeding area. When the hot press forming plate moves to the lower feeding area, the upper bin is exactly located at the pressing bin;

[0031] SS3: The lower hot pressing plate is pulled downward by the cylinder so that the raw materials to be hot-pressed in the upper bin enter the pressing bin for hot pressing.

[0032] The beneficial effects of the present invention are as follows: on the one hand, the present invention divides the workbench into a loading area, a pressing bin and a unloading area and uses them in conjunction with a lifting unit and a driving unit, so that the hot pressing and loading processes are carried out simultaneously, and the forming plate is simultaneously sent to the unloading area during the second feeding, which effectively improves the work efficiency; on the other hand, the upper hot pressing plate and the lower hot pressing plate are heated by the coil, which effectively avoids the problem of coking after the heating tube is overheated. It has the beneficial effects of simple structure, low manufacturing cost, easy operation and not easy to damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a specific implementation mode of the present invention.

[0034] Figure 2 yes Figure 1 Schematic diagram of the right view structure.

[0035] Figure 3 It is a three-dimensional structural schematic diagram of the present invention

[0036] Figure 4 yes Figure 3 Schematic diagram of the local enlarged structure at point A in the middle.

[0037] Figure 5 It is a structural schematic diagram of the working table and the loading bin used in conjunction with each other in the present invention.

[0038] Figure 6 It is a structural schematic diagram of the working table and the lifting unit used in conjunction with each other in the present invention.

[0039] Figure 7 yes Figure 5 Schematic diagram of the structure without the loading silo installed.

[0040] Figure 8 It is a structural schematic diagram of the workbench in the present invention. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0042] like Figures 1 to 8 As shown, a double-coil induction heating wood board hot press machine is characterized in that: it comprises a frame 1, on which an upper hot press plate 2 is arranged which can move along the height direction of the frame 1; on the frame 1, an oil cylinder 3 is arranged, and an oil cylinder piston rod 5 of the oil cylinder 3 is connected to the top end of the upper hot press plate 2;

[0043] The frame 1 is provided with a workbench 6, the front half of the workbench 6 is a loading area 7, the rear half of the workbench 6 is a unloading area 8, a pressing bin 9 is provided between the loading area 7 and the unloading area 8, a lower hot pressing plate 10 used in conjunction with the upper hot pressing plate 2 is provided in the pressing bin 9, the lower hot pressing plate 10 can move up and down in the pressing bin 9 through a lifting unit 11, and the lifting unit 11 is provided on the frame 1;

[0044] The frame 1 is provided with a loading bin 12 used in conjunction with the workbench 6. The loading bin 12 is a rectangular hollow structure and can slide along the length direction of the workbench 6 through a driving unit 13. In order to further improve the effect, the sliding connection between the loading bin 12 and the workbench 6 in the present invention can adopt a guide rail sliding connection.

[0045] The frame 1 includes a first rectangular frame 15 and a second rectangular frame 16. The number of the oil cylinders 3 is two, and each of the oil cylinders 3 is located between the first rectangular frame 15 and the second rectangular frame 16 and is connected to the first rectangular frame 15 and the second rectangular frame 16 through an oil cylinder mounting seat 17.

[0046] The pressing bin 9 is supported by the first rectangular frame 15 and the second rectangular frame 16 , and the loading area 7 and the unloading area 8 extend out of the frame 1 respectively.

[0047] The first rectangular frame 15 and the second rectangular frame 16 are arranged on a base 18;

[0048] The lifting unit 11 includes two cylinders 19, each of which is arranged on a base 18 and located between the first rectangular frame 15 and the second rectangular frame 16, and the cylinder piston rod 50 on each of the cylinders 19 is connected to the bottom end of the lower hot pressing plate 10 through a connecting plate.

[0049] The bottom ends of the first rectangular frame 15 and the second rectangular frame 16 are detachably connected to the base 18 via a plurality of columns 20 .

[0050] A support seat 21 is disposed on the base 18 . The support seat 21 is located between the cylinders 19 . The upper end of the support seat 21 is in contact with the lower end of the lower hot pressing plate 10 .

[0051] The driving unit 13 includes two long strip mounting plates 22, and the inner side of each of the long strip mounting plates 22 is connected to the two sides of the upper bin 12 respectively;

[0052] A rack 23 is provided on the outer side of each of the long strip mounting plates 22; two motors 26 are provided between the first rectangular frame 15 and the second rectangular frame 16, and the loading bin 12 is located between the two motors 26; each of the motors 26 is provided on each of the first positioning seats 28 through a mounting frame 27, and both ends of each of the first positioning seats 28 are connected to the first rectangular frame 15 and the second rectangular frame 16 respectively;

[0053] The output shaft of the motor 26 can be rotatably passed through the first positioning seat 28 and is rotatably connected to the second positioning seat 29 through a rotating rod. The two ends of the second positioning seat 29 are respectively connected to the first rectangular frame 15 and the second rectangular frame 16; a toothed disc 30 used in conjunction with the rack 23 is arranged between the first positioning seat 28 and the second positioning seat 29, and the toothed disc 30 is sleeved on the rotating rod 31.

[0054] A heating chamber is provided in the upper hot pressing plate 2 and the lower hot pressing plate 10, and a coil for heating the upper hot pressing plate 2 and the lower hot pressing plate 10 is provided in the heating chamber;

[0055] Each of the racks 23 is detachably connected to the long strip mounting plate 22 via a plurality of mounting blocks 32 .

[0056] A plurality of grooves 33 are disposed on both sides of the first rectangular frame 15 and the second rectangular frame 16 ; and the upper ends of the loading area 7 , the pressing bin 9 and the unloading area 8 are flush with each other.

[0057] The heating method of the double-coil induction heating wood board hot press comprises the following steps:

[0058] S1: The motor 26 drives the toothed disc 30 to rotate, thereby driving the loading bin 12 to the loading area 7;

[0059] S2: placing the raw material to be hot-pressed into the loading bin 12 to complete loading;

[0060] S3: The loading bin 12 after loading is pushed to the top of the pressing bin 9 by the motor 26, and the raw materials to be hot-pressed fall into the pressing bin 9;

[0061] S4: The loading bin 12 is brought back to the loading area 7 by the motor 26;

[0062] S5: After heating the upper hot pressing plate 2 and the lower hot pressing plate 10, the upper hot pressing plate 2 is pushed downward by the oil cylinder 3, so that the upper hot pressing plate 2 cooperates with the lower hot pressing plate 10 to perform hot pressing molding on the raw material to be hot pressed;

[0063] The upper hot pressing plate 2 and the lower hot pressing plate 10 are provided with a heating chamber, and the upper hot pressing plate 2 and the lower hot pressing plate 10 are heated by the coil in the heating chamber. After the upper hot pressing plate 2 and the lower hot pressing plate 10 are heated to 135°-140°, the heating is stopped and hot pressing is performed.

[0064] S6: Take out the thermoformed plate.

[0065] In S6, the specific operation steps of taking out the hot press formed plate are:

[0066] SS1: The lower hot pressing plate 10 is pushed upward by the cylinder 19. At this time, the hot pressing forming plate moves upward with the lower hot pressing plate 10 until the bottom end of the hot pressing forming plate is flush with the top end of the workbench 6. At the same time, the raw material to be hot pressed is placed in the upper bin 12;

[0067] SS2: The upper bin 12 is moved toward the pressing bin 9 by the motor 26. The upper bin 12 pushes the hot press forming plate toward the lower material area 8 while moving. When the hot press forming plate moves to the lower material area 8, the upper bin 12 is exactly located at the pressing bin 9.

[0068] SS3: The lower hot pressing plate 10 is pulled downward by the cylinder 19 so that the raw materials to be hot-pressed in the upper bin 12 enter the pressing bin 9 for hot pressing.

[0069] In order to further improve the heating effect, the present invention can use double coil induction heating to heat the upper hot pressing plate 2 and the lower hot pressing plate 10, and after the pressing plate is heated to about 140 degrees, the wood chips can be hot pressed and formed. The present invention mainly hot presses thick plates exceeding 9 cm.

[0070] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. The heating method of the double coil induction heating wood board hot press is characterized by: A double-coil induction heating wood board hot press comprises a frame (1), on which an upper hot press plate (2) is arranged which can move along the height direction of the frame (1); on the frame (1) an oil cylinder (3) is arranged, and an oil cylinder piston rod (5) of the oil cylinder (3) is connected to the top end of the upper hot press plate (2); A workbench (6) is arranged on the frame (1), the front half of the workbench (6) is a loading area (7), the rear half of the workbench (6) is a unloading area (8), a pressing bin (9) is arranged between the loading area (7) and the unloading area (8), a lower hot pressing plate (10) used in conjunction with the upper hot pressing plate (2) is arranged in the pressing bin (9), the lower hot pressing plate (10) moves up and down in the pressing bin (9) through a lifting unit (11), and the lifting unit (11) is arranged on the frame (1); The frame (1) is provided with a loading bin (12) for use with the workbench (6); the loading bin (12) is a rectangular hollow structure and can slide along the length direction of the workbench (6) through a driving unit (13); The frame (1) comprises a first rectangular frame (15) and a second rectangular frame (16); the number of the oil cylinders (3) is two, each of the oil cylinders (3) is located between the first rectangular frame (15) and the second rectangular frame (16) and is connected to the first rectangular frame (15) and the second rectangular frame (16) at the same time through an oil cylinder mounting seat (17); The pressing bin (9) is supported by the first rectangular frame (15) and the second rectangular frame (16), and the loading area (7) and the unloading area (8) respectively extend out of the frame (1); The first rectangular frame (15) and the second rectangular frame (16) are arranged on a base (18); The lifting unit (11) comprises two cylinders (19), each of the cylinders (19) is arranged on a base (18) and is located between the first rectangular frame (15) and the second rectangular frame (16), and the cylinder piston rod (50) on each of the cylinders (19) is connected to the bottom end of the lower hot pressing plate (10) through a connecting plate; The bottom ends of the first rectangular frame (15) and the second rectangular frame (16) are detachably connected to the base (18) via a plurality of columns (20); A support seat (21) is provided on the base (18), and the support seat (21) is located between each of the cylinders (19), and the upper end of the support seat (21) is in contact with the lower end of the lower hot pressing plate (10); The driving unit (13) comprises two long strip mounting plates (22), and the inner side of each of the long strip mounting plates (22) is respectively connected to two sides of the upper bin (12); A rack (23) is arranged on the outer side of each of the long strip mounting plates (22); two motors (26) are arranged between the first rectangular frame (15) and the second rectangular frame (16), and the loading bin (12) is located between the two motors (26); each of the motors (26) is arranged on each of the first positioning seats (28) through a mounting frame (27), and two ends of each of the first positioning seats (28) are respectively connected to the first rectangular frame (15) and the second rectangular frame (16); The output shaft of the motor (26) rotatably passes through the first positioning seat (28) through a rotating rod and is rotatably connected to the second positioning seat (29), and the two ends of the second positioning seat (29) are respectively connected to the first rectangular frame (15) and the second rectangular frame (16); a toothed disc (30) used in conjunction with the rack (23) is provided between the first positioning seat (28) and the second positioning seat (29), and the toothed disc (30) is sleeved on the rotating rod (31); A heating chamber is provided in the upper hot pressing plate (2) and the lower hot pressing plate (10), and a coil for heating the upper hot pressing plate (2) and the lower hot pressing plate (10) is provided in the heating chamber; Each of the racks (23) is detachably connected to the long strip mounting plate (22) via a plurality of mounting blocks (32); A plurality of grooves (33) are provided on both sides of the first rectangular frame (15) and the second rectangular frame (16); the upper ends of the loading area (7), the pressing bin (9) and the unloading area (8) are flush; The following steps are involved: S1: The motor (26) drives the toothed disc (30) to rotate, thereby driving the loading bin (12) to the loading area (7); S2: placing the raw material to be hot-pressed into a loading bin (12) to complete loading; S3: The loading bin (12) after loading is pushed to the top of the pressing bin (9) by the motor (26), and the raw materials to be hot-pressed fall into the pressing bin (9); S4: The loading bin (12) is brought back to the loading area (7) by the motor (26); S5: After heating the upper hot pressing plate (2) and the lower hot pressing plate (10), the upper hot pressing plate (2) is pushed downward by the oil cylinder (3), so that the upper hot pressing plate (2) and the lower hot pressing plate (10) cooperate to perform hot pressing on the raw material to be hot pressed; S6: Take out the thermoformed plate.

2. The heating method of the double-coil induction heating wood board hot press according to claim 1, characterized in that: The upper hot pressing plate (2) and the lower hot pressing plate (10) are provided with a heating chamber, and the upper hot pressing plate (2) and the lower hot pressing plate (10) are heated by the coil in the heating chamber. After the upper hot pressing plate (2) and the lower hot pressing plate (10) are heated to 135°-140°, the heating is stopped and hot pressing is performed; In S6, the specific operation steps of taking out the hot press formed plate are: SS1: The lower hot pressing plate (10) is pushed upward by the cylinder (19), and the hot pressing forming plate moves upward along with the lower hot pressing plate (10) until the bottom end of the hot pressing forming plate is flush with the top end of the workbench (6), and at the same time, the raw material to be hot pressed is placed in the upper bin (12); SS2: The upper material bin (12) is moved toward the pressing material bin (9) by means of a motor (26). The upper material bin (12) pushes the hot press forming plate toward the lower material area (8) while moving. When the hot press forming plate moves to the lower material area (8), the upper material bin (12) is exactly located at the pressing material bin (9); SS3: The lower hot pressing plate (10) is pulled downward by the cylinder (19) so that the raw materials to be hot-pressed and formed in the upper material bin (12) enter the pressing bin (9) for hot pressing.

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