CN211806653U

CN211806653U - Edge cutting equipment for producing density fiberboard

Info

Publication number: CN211806653U
Application number: CN202020091397.0U
Authority: CN
Inventors: 苗润发
Original assignee: Tianjin Shengsong Wood Industry Co ltd
Current assignee: Tianjin Shengsong Wood Industry Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-10-30
Anticipated expiration: 2030-01-16

Abstract

The utility model relates to a side cut equipment is used in production of density fiberboard. Comprises two groups of cutting devices which are symmetrically arranged, and distance adjusting devices are connected below the two cutting devices; a first conveying line and a second conveying line are respectively arranged at the upstream and the downstream of the distance adjusting device; portal frames are fixedly connected to the two conveying lines, and the two groups of portal frames are connected with a pressing plate device; the cutting device comprises a transverse mounting plate, a cutter motor base is fixedly connected to the transverse mounting plate, and a cutter driving motor is fixedly connected to the cutter motor base; a cutting circular knife is connected to an output shaft of the cutter driving motor; the cross sliding mounting plate is fixedly connected with a belt groove supporting block which is arranged below the cutting circular knife and used for supporting the density fiberboard through a supporting rod, the top surface of the belt groove supporting block is provided with a strip-shaped notch with an upward opening, and the cutting edge of the lower edge of the cutting circular knife is positioned in the strip-shaped notch. The utility model provides a problem that cutting inefficiency, security are poor and intensity of labour are big that current material side cut equipment exists.

Description

Edge cutting equipment for producing density fiberboard

Technical Field

The utility model belongs to the technical field of the fibreboard processing, especially, relate to a production of density fibreboard is with side cut equipment.

Background

One of the boards is classified into low-Density, medium-Density and High-Density boards according to Density, and classified into fiber Density boards (also called Density fiberboard), plywood Density boards, wood shaving Density boards and the like according to raw materials. The fiber density board is an artificial board made of wood fiber or other plant fiber as raw material, through breaking, fiber separation, drying, applying urea-formaldehyde resin or other suitable adhesives, and hot pressing. The fiber board has the advantages of uniform material, small longitudinal and transverse strength difference, difficult cracking and the like, has wide application, needs 2.5-3 cubic meters of wood for manufacturing 1 cubic meter of fiber board, can replace 3 cubic meters of sawn wood or 5 cubic meters of log, and is an effective way for comprehensively utilizing wood resources in developing fiber board production.

The plate made after hot pressing needs to be subjected to cooling and drying operation, and the plate is subjected to edge cutting operation according to certain size requirements after cooling and drying, so that the plate surface size of the product is consistent, and normal storage and transportation are further completed.

The existing plate trimming equipment has the following problems: (1) each side surface of the cooled and dried density fiberboard needs to be subjected to edge cutting operation, the existing edge cutting equipment is simple in structure, only one group of cutting blades driven by a motor to rotate are generally arranged, one side surface can be cut at a time during cutting, and the cutting efficiency is low; (2) the wood board is often manually pushed to be cut in the cutting process, the labor intensity of workers is high, and certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the technical problem that exists among the well-known art and provide a cutting edge equipment is used in production of density fiberboard that cutting efficiency is high and the security is strong, the utility model provides a problem that cutting efficiency is low, the security is poor and intensity of labour is big that current material side cut equipment exists.

The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: the edge cutting equipment for producing the density fiberboard comprises two groups of cutting devices which are symmetrically arranged and used for cutting the density fiberboard, wherein distance adjusting devices which are used for driving the two groups of cutting devices to synchronously move towards or away from the transverse direction are connected below the two groups of cutting devices; a first conveying line and a second conveying line which have the same conveying direction and the conveying direction perpendicular to the transverse moving direction of the cutting device are respectively arranged at the upstream and the downstream of the distance adjusting device; portal frames crossing the transmission surface are fixedly connected to the first transmission line and the second transmission line, and the two groups of portal frames are connected with a pressing plate device which is used for tightly pressing the density fiberboard to the transmission surface and is in rolling contact with the density fiberboard;

the cutting device comprises a transversely arranged transverse mounting plate, a cutter motor base is fixedly connected to the transverse mounting plate through a supporting rod, a transversely arranged cutter driving motor is fixedly connected to the cutter motor base, and an output shaft of the cutter driving motor is perpendicular to the transmission direction of the density fiberboard; a cutting circular knife is connected to an output shaft of the cutter driving motor; the cross sliding mounting plate is fixedly connected with a belt groove supporting block which is arranged below the cutting circular knife and used for supporting the density fiberboard through a supporting rod, the top surface of the belt groove supporting block is provided with a strip-shaped notch with an upward opening, and the cutting edge of the lower edge of the cutting circular knife is positioned in the strip-shaped notch.

The utility model has the advantages that: the utility model provides a trimming equipment is used in density fiberboard production, carry out the straight line transmission to density fiberboard through setting up first transfer chain and second transfer chain, can press the plate to the transmission face of transfer chain through setting up the presser device, two sets of presser devices can be pushed the plate to the cutting device automatically and cut with the transfer chain cooperation use, replaced the manual pushing operation, reduced artifical intensity of labour and improved the security of equipment; by arranging the two groups of cutting devices, two groups of opposite side surfaces of the density fiberboard can be cut simultaneously during one-time cutting, so that the working efficiency is improved; the distance between the two groups of cutting devices can be adjusted by the distance adjusting device, so that the edge cutting equipment can meet different cutting requirements, one set of edge cutting equipment does not need to be arranged, the universality of the equipment is improved, and the production cost of the density fiberboard is reduced.

Preferably: the distance adjusting device comprises a distance adjusting support, a distance adjusting guide rail and a distance adjusting screw rod which are transversely arranged in parallel are arranged on the top surface of the distance adjusting support, the distance adjusting screw rod is rotatably connected with the distance adjusting support through a rolling bearing, and a left-handed screw nut and a right-handed screw nut which have opposite rotation directions are screwed on the distance adjusting screw rod; the two groups of cutting devices are fixedly connected with the left-handed screw nut and the right-handed screw nut respectively, and are connected with the distance-adjusting guide rail in a sliding manner through the sliding blocks; the screw rod drive is used for driving the distance-adjusting screw rod to rotate; the axial direction of the distance adjusting screw rod is vertical to the transmission direction of the density fiberboard.

Preferably: the pressing plate device comprises a pressing plate linear drive with an extension end downwards fixedly connected to the portal frame, a pressing plate lifting plate is fixedly connected to the extension end of the pressing plate linear drive, a pressing plate roller seat is arranged below the pressing plate lifting plate, a pressing plate roller is rotatably connected to the pressing plate roller seat, and the axis of the pressing plate roller is perpendicular to the transmission direction of the density fiberboard; a pressing plate roller seat is fixedly connected with a pressing plate roller drive for driving the pressing plate roller to rotate, and a belt wheel transmission pair is connected between the output end of the pressing plate roller drive and the pressing plate roller in a transmission way; the top surface rigid coupling of clamp plate cylinder seat has the multiunit to vertically set up and with clamp plate lifter plate sliding connection's clamp plate guide bar, has the limiting plate at the top rigid coupling of clamp plate guide bar, overlaps on the clamp plate guide bar to be equipped with the clamp plate spring that is located between clamp plate lifter plate and the clamp plate cylinder seat.

Preferably: the first conveying line comprises a conveying rack, a plurality of groups of conveying rollers which are transversely and uniformly distributed and are arranged in parallel are connected to the conveying rack, and the conveying line further comprises a conveying transmission assembly for transmitting power to the plurality of groups of conveying rollers and a conveying power assembly for driving the plurality of groups of conveying rollers to synchronously rotate.

Preferably: the first conveying line and the second conveying line are consistent in structure.

Drawings

Fig. 1 is a schematic front view of the present invention;

fig. 2 is a schematic perspective view of a first conveyor line in the present invention;

fig. 3 is a schematic perspective view of a pressing plate device of the present invention;

fig. 4 is a schematic perspective view of the cutting device of the present invention;

fig. 5 is a schematic perspective view of the distance adjusting device of the present invention.

In the figure: 1. a first conveyor line; 1-1, conveying a power assembly; 1-2, conveying rollers; 1-3, a conveying rack; 1-4, a conveying transmission component; 2. a guardrail device; 3. a gantry; 4. a platen device; 4-1, a belt wheel transmission pair; 4-2, pressing a plate roller seat; 4-3, pressing a lifting plate; 4-4, a linear driving seat; 4-5, linearly driving a pressing plate; 4-6, a pressure plate guide rod; 4-7, a pressure plate spring; 4-8, driving a pressing plate roller; 4-9, pressing plate roller; 5. a distance adjusting device; 5-1, adjusting the distance of the support; 5-2, driving by a lead screw; 5-3, left-handed screw; 5-4, adjusting the distance of the screw rod; 5-5, adjusting distance guide rail; 5-6, a right-handed screw; 6. a cutting device; 6-1, transversely moving the mounting plate; 6-2, supporting rods; 6-3, a supporting block with a groove; 6-4, a cutter motor base; 6-5, cutting a circular knife; 6-6, a cutter driving motor; 7. and a second conveyor line.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are described in detail:

referring to fig. 1, the trimming apparatus for producing density fiberboard of the present invention comprises two symmetrically arranged cutting devices 6 for cutting the density fiberboard, and a distance adjusting device 5 for driving the two cutting devices 6 to move synchronously toward/away from the horizontal direction is connected below the two cutting devices 6; a first conveying line 1 and a second conveying line 7 which have the same conveying direction and the conveying direction is vertical to the transverse moving direction of the cutting device 6 are respectively arranged at the upstream and the downstream of the distance adjusting device 5; and portal frames 3 crossing the transmission surface are fixedly connected to the first transmission line 1 and the second transmission line 7, and the two groups of portal frames 3 are connected with pressing plate devices 4 which are used for tightly pressing the density fiberboard to the transmission surface and are in rolling contact with the density fiberboard.

The first conveying line 1 and the second conveying line 7 are arranged to linearly convey the density fiberboard, the plate can be pressed onto the conveying surface of the conveying lines through the plate pressing devices 4, and the two groups of plate pressing devices 4 are matched with the conveying lines to be used for automatically pushing the plate onto the cutting device 6 to be cut, so that manual pushing operation is replaced, the manual labor intensity is reduced, and the safety of equipment is improved; by arranging the two groups of cutting devices 6, two groups of opposite side surfaces of the density fiberboard can be cut simultaneously during one-time cutting, so that the working efficiency is improved; the distance between the two groups of cutting devices 6 can be adjusted by the distance adjusting device 5, so that the edge cutting equipment can meet different cutting requirements, one set of edge cutting equipment does not need to be arranged, the universality of the equipment is improved, and the production cost of the density fiberboard is reduced.

As shown in fig. 4, the cutting device 6 comprises a transversely arranged transverse mounting plate 6-1, a cutter motor base 6-4 is fixedly connected to the transverse mounting plate 6-1 through a support rod 6-2, a transversely arranged cutter driving motor 6-6 is fixedly connected to the cutter motor base 6-4, and an output shaft of the cutter driving motor 6-6 is perpendicular to the transmission direction of the density fiberboard; the output shaft of the cutter driving motor 6-6 is connected with a cutting circular knife 6-5; a trough supporting block 6-3 positioned below the cutting circular knife 6-5 is fixedly connected to the traverse mounting plate 6-1 through a supporting rod 6-2, the trough supporting block 6-3 is used for supporting the density fiberboard, a strip-shaped notch with an upward opening is formed in the top surface of the trough supporting block 6-3, and a cutting edge of the lower edge of the cutting circular knife 6-5 is positioned in the strip-shaped notch.

The working principle of the cutting device 6 is as follows: the top surface of the supporting block 6-3 with the groove is flush with the transmission surface of the conveying line, in the cutting process, the density fiberboard is pressed onto the transmission surface of the conveying line by the pressing plate device 4 and is pushed to the position between the cutting circular knife 6-5 and the supporting block 6-3 with the groove by the conveying line, the cutting circular knife 6-5 is driven to rotate by the cutting knife driving motor 6-6, so that the edge cutting operation is performed on the density fiberboard, and the density fiberboard is erected between the two groups of supporting blocks 6-3 with the groove in the cutting process.

In the present embodiment, the first transfer wire 1 and the second transfer wire 7 are identical in structure and transfer speeds. As shown in fig. 2, the first conveyor line 1 includes a conveyor frame 1-3, a plurality of groups of conveying rollers 1-2 which are transversely and uniformly distributed and are arranged in parallel are connected to the conveyor frame 1-3, and also includes a conveying transmission assembly 1-4 for transmitting power to the plurality of groups of conveying rollers 1-2 and a conveying power assembly 1-1 for driving the plurality of groups of conveying rollers 1-2 to synchronously rotate. The conveying transmission assembly 1-4 comprises a direct-connected speed reducer provided with a motor, a speed reducer bottom plate and a tensioning adjusting seat, and a speed reducer oil receiving disc is arranged on the lower portion of the speed reducer. The conveying power component 1-1 comprises a duplex chain wheel arranged on the conveying roller 1-2, a chain wheel on an output shaft of a speed reducer in the conveying transmission component 1-4 and a transmission chain, and the power is transmitted to each level of conveying roller 1-2 through the duplex chain wheel.

The conveying roller 1-2 is a power roller and consists of a cylinder body, a shaft core and a deep groove ball bearing. The cylinder is of a hollow structure, the two ends of the cylinder are closed, the shaft core is coaxially arranged in the cylinder in a penetrating mode, the shaft core is rotatably connected with the cylinder through a deep groove ball bearing, the two ends of the shaft core are fixedly connected with the conveying rack 1-3 through screws, and the double-row chain wheels in the conveying power assembly 1-1 are coaxially connected with the cylinder.

The size of the roller diameter is selected according to the mass of the conveyed article. The diameter range of the roller for general use is 60-90 mm, 50mm is selected as the conveying roller 1-2 in the embodiment, and the width of the roller is selected according to the width of conveyed articles, generally equal to the width of the articles or more than 100-150 mm. The height of the roller from the ground is determined according to the process operation requirements and the height of related equipment, and when no special requirements exist, 500 mm, 650 mm and 800mm are generally adopted. The distance between the adjacent conveying rollers 1-2 can be set according to the size of the conveyed object, and at least three conveying rollers 1-2 are required to be contacted with the conveyed object at any time in order to ensure the balanced conveying of the goods. The rollers of proper types are selected according to different use environments, and stainless steel or plastic steel type rollers are generally adopted.

As shown in fig. 1, the guardrail devices 2 are connected to the first conveying line 1 and the second conveying line 7, the distance between the two sets of guardrail devices 2 is adjustable, and the guardrail devices 2 can guide the density fiberboards on the conveying lines. In this embodiment, the barrier device 2 includes the multiunit holder, is connected with the connecting rod on the holder, but the connecting rod perpendicular to transmission direction carries out lateral shifting, is connected with the limiting plate that extends along transmission direction in the inner of connecting rod. The lower edge of the limiting plate is positioned above the conveying surface of the conveying line.

Referring to fig. 5 further, in the present embodiment, the distance adjusting device 5 includes a distance adjusting support 5-1, a distance adjusting guide rail 5-5 and a distance adjusting screw 5-4 are disposed on the top surface of the distance adjusting support 5-1, the distance adjusting screw 5-4 is rotatably connected to the distance adjusting support 5-1 through a rolling bearing, and a left-handed screw 5-3 and a right-handed screw 5-6 with opposite rotation directions are screwed on the distance adjusting screw 5-4.

The two groups of cutting devices 6 are respectively fixedly connected with the left-handed screw nut 5-3 and the right-handed screw nut 5-6, namely the left-handed screw nut 5-3 and the right-handed screw nut 5-6 are respectively connected to the bottom surfaces of the two groups of transverse moving mounting plates 6-1; the two groups of cutting devices 6 are both connected with the distance adjusting guide rails 5-5 in a sliding way through sliding blocks, namely the sliding blocks connected with the distance adjusting guide rails 5-5 in a sliding way are fixedly connected on the bottom surfaces of the two groups of transverse moving mounting plates 6-1; the distance adjusting device 5 further comprises a lead screw driver 5-2 for driving the distance adjusting lead screw 5-4 to rotate, and the lead screw driver 5-2 adopts a speed reducing motor. The axial direction of the distance adjusting screw 5-4 is vertical to the transmission direction of the density fiberboard.

The working principle of the distance adjusting device 5 is as follows: the screw rod drives 5-2 to drive the distance-adjusting screw rod 5-4 to rotate, the left-handed screw nut 5-3 and the right-handed screw nut 5-6 can synchronously move towards/away from the transverse direction under the driving of the distance-adjusting screw rod 5-4, the transverse movement of the left-handed screw nut 5-3 and the right-handed screw nut 5-6 can drive the two groups of cutting devices 6 to synchronously move towards/away from the transverse direction, and further the distance between the two groups of cutting circular knives 6-5 is adjusted, so that different cutting requirements are met, the distance-adjusting guide rails 5-5 can play a role in guiding the transverse movement of the cutting devices 6, and the stability of the transverse movement of the two groups of cutting devices 6 is improved.

Referring further to fig. 3, in the present embodiment, the platen device 4 includes a linear driving seat 4-4 fixedly connected to the gantry 3, and a platen linear driver 4-5 having a downward extending end is fixedly connected to the linear driving seat 4-4; the pressing plate linear drive 4-5 is a hydraulic cylinder or an air cylinder, and an attached magnetic switch (not shown in the figure) is arranged on the pressing plate linear drive 4-5 and used for detecting the limit position of the extending end of the pressing plate linear drive 4-5. A pressing plate lifting plate 4-3 is fixedly connected to the extending end of the pressing plate linear drive 4-5, a pressing plate roller seat 4-2 is arranged below the pressing plate lifting plate 4-3, a pressing plate roller 4-9 is rotatably connected to the pressing plate roller seat 4-2, and the axis of the pressing plate roller 4-9 is perpendicular to the transmission direction of the density fiberboard; the pressure plate roller 4-9 comprises a hollow roller body, rotating shafts are integrally formed at two end parts of the roller body, and the rotating shafts are rotatably connected with the pressure plate roller seat 4-2 through rolling bearings.

A platen roller drive 4-8 for driving the platen roller 4-9 to rotate is fixedly connected to the platen roller seat 4-2, the platen roller drive 4-8 adopts a speed reduction motor, and a belt wheel transmission pair 4-1 is in transmission connection between the output end of the platen roller drive 4-8 and the platen roller 4-9. The belt wheel transmission pair 4-1 comprises a driving belt wheel which is in key connection with the output end of the pressing plate roller driving 4-8 and a driven belt wheel which is in key connection with the rotating shaft of the pressing plate roller 4-9, and a transmission belt in a closed state is in transmission connection between the driving belt wheel and the driven belt wheel. The belt wheel transmission pair 4-1 can also be replaced by a chain wheel transmission pair or a gear pair. In this embodiment, the linear speed of the platen roller 4-9 is kept constant with the linear speed of the transport roller in the conveyor line, and the rotational directions of the platen roller 4-9 and the transport roller are opposite.

A plurality of groups of pressure plate guide rods 4-6 which are longitudinally arranged and are in sliding connection with the pressure plate lifting plate 4-3 are fixedly connected to the top surface of the pressure plate roller seat 4-2, a limiting plate is fixedly connected to the tops of the pressure plate guide rods 4-6, and a pressure plate spring 4-7 positioned between the pressure plate lifting plate 4-3 and the pressure plate roller seat 4-2 is sleeved on the pressure plate guide rods 4-6. Through the arrangement of the pressure plate springs 4-7 and the pressure plate guide rods 4-6, the pressure plate roller 4-9 can be tightly pushed to the upper surface of the density fiberboard by the aid of elasticity of the pressure plate springs 4-7, collision impact between the pressure plate roller 4-9 and the density fiberboard is relieved, vibration caused by surface unevenness of the density fiberboard is avoided, and stability of equipment is improved.

The working principle of the plate pressing device 4 is as follows: the pressing plate roller drive 4-8 and the belt wheel transmission pair 4-1 jointly act to drive the pressing plate roller 4-9 to rotate, the pressing plate roller 4-9 and the conveying roller in the conveying line jointly act to clamp the density fiberboard, and meanwhile, the density fiberboard is pushed towards the cutting device 6, so that the cutting device 6 can conveniently cut the board.

The conveying rack and the distance-adjusting support 5-1 in the embodiment are manufactured in an integral welding mode, rough machining is carried out after internal stress is eliminated through annealing, then vibratory stress relief treatment is carried out, and fine machining is carried out to ensure the rigidity, stability, shock resistance and precision of a machine tool. The portal frame 3 is made of cast aluminum, internal stress is eliminated, and machining is carried out, so that the rigidity, stability and precision of the whole portal frame are guaranteed. The straightness and parallelism of all guide rails reach the accuracy requirement of European standard 6 grade.

The utility model is electrically connected with the control system of the workshop, the control system comprises a control switch and a control device such as a PLC controller, in addition, sensors with corresponding models are arranged on each action position, and parts such as solenoid valves of each power source are controlled by the PLC controller, the device can realize automatic transmission, cutting and distance adjustment of the cutting device 6; high working efficiency, strong universality and high safety.

The working process is as follows:

(1) the PLC starts the linear driving of the pressing plate 4-5, and adjusts the height of the pressing plate roller 4-9 according to the thickness of the density fiberboard, so that the lower edge of the pressing plate roller 4-9 is tightly propped against the top surface of the density fiberboard in the working process; the PLC controller starts the lead screw drive 5-2 to drive the distance-adjusting lead screw 5-4 to rotate, so that the distance between the two groups of cutting devices 6 reaches the preset requirement according to the size requirement of the density fiberboard, and the PLC controller controls the cutter drive motor 6-6 to be started to drive the cutting circular cutter 6-5 to rotate; the PLC controller controls the first conveying line 1 and the second conveying line 7 to start, and the conveying direction and the conveying speed of the first conveying line and the second conveying line are consistent. A density fiberboard to be processed is placed on the first conveyor line 1 by a manual or mechanical operation.

(2) The pressing plate device 4 and the first conveying line 1 jointly act to push the density fiberboard to the two groups of cutting devices 6, the two groups of cutting devices 6 jointly act to cut two groups of opposite side faces of the density fiberboard, in the cutting process, the pressing plate device 4 positioned on the other side of the cutting devices 6 and the second conveying line 7 jointly act to clamp and pull the density fiberboard, and when the density fiberboard is separated from the pressing plate device 4 on the upstream, the density fiberboard is prevented from lacking a driving force and cannot complete the cutting operation;

(3) after finishing the trimming operation of a group of opposite surfaces, the PLC controls the first conveyor line 1, the second conveyor line 7 and the cutting device 6 to stop running, and the density fiberboard is rotated by 90 degrees by manual or mechanical operation;

(4) after the density fiberboard is rotated by 90 degrees, the density fiberboard is placed on a second conveying line 7 again, the PLC controller starts a lead screw to drive a distance adjusting lead screw 5-2 to drive a distance adjusting lead screw 5-4 to rotate, further, according to the size requirement of the density fiberboard, the distance between two groups of cutting devices 6 reaches another preset requirement, and the PLC controller controls a cutter driving motor 6-6 to be started so that a cutting circular cutter 6-5 rotates; the PLC controller controls the first conveying line 1 and the second conveying line 7 to start and perform reverse transmission, and the transmission direction and the transmission speed of the first conveying line and the second conveying line are consistent.

(5) The pressing plate device 4 and the second conveying line 7 jointly act to push the density fiberboard to the two groups of cutting devices 6, the two groups of cutting devices 6 jointly act to cut the other two groups of opposite side surfaces of the density fiberboard, in the cutting process, the pressing plate device 4 positioned on the other side of the cutting devices 6 and the first conveying line 1 jointly act to clamp and pull the density fiberboard, and after the edge cutting is finished, the first conveying line 1 conveys the density fiberboard out to facilitate the next process; the PLC controller then controls the first conveyor line 1, the second conveyor line 7 and the cutting device 6 to stop operating.

And (5) repeating the steps (1) to (5) to continuously perform edge cutting operation on the density fiberboard, so that the cutting efficiency is high and the safety is high.

Claims

1. The utility model provides a production of density fiberboard is with side cut equipment which characterized by: the device comprises two groups of cutting devices (6) which are symmetrically arranged and used for cutting the density fiberboard, wherein distance adjusting devices (5) which are used for driving the two groups of cutting devices (6) to synchronously move towards or away from the transverse direction are connected below the two groups of cutting devices (6); a first conveying line (1) and a second conveying line (7) which have the same conveying direction and the conveying direction perpendicular to the transverse moving direction of the cutting device (6) are respectively arranged at the upstream and the downstream of the distance adjusting device (5); portal frames (3) crossing the transmission surface are fixedly connected to the first transmission line (1) and the second transmission line (7), and a pressing plate device (4) used for tightly pressing the density fiberboard to the transmission surface and in rolling contact with the density fiberboard is connected to each of the two groups of portal frames (3);

the cutting device (6) comprises a transversely arranged transverse moving mounting plate (6-1), a cutter motor seat (6-4) is fixedly connected to the transverse moving mounting plate (6-1) through a support rod (6-2), a transversely arranged cutter driving motor (6-6) is fixedly connected to the cutter motor seat (6-4), and an output shaft of the cutter driving motor (6-6) is perpendicular to the transmission direction of the density fiberboard; the output shaft of the cutter driving motor (6-6) is connected with a cutting circular cutter (6-5); a grooved supporting block (6-3) which is positioned below the cutting circular knife (6-5) and is used for supporting the density fiberboard is fixedly connected to the transverse mounting plate (6-1) through a supporting rod (6-2), a strip-shaped notch with an upward opening is formed in the top surface of the grooved supporting block (6-3), and the cutting edge of the lower edge of the cutting circular knife (6-5) is positioned in the strip-shaped notch.

2. The edge slitting apparatus for the production of density fiberboard of claim 1, wherein: the distance adjusting device (5) comprises a distance adjusting support (5-1), the top surface of the distance adjusting support (5-1) is provided with a distance adjusting guide rail (5-5) and a distance adjusting screw rod (5-4) which are transversely arranged in parallel, the distance adjusting screw rod (5-4) is rotatably connected with the distance adjusting support (5-1) through a rolling bearing, and a left-handed screw nut (5-3) and a right-handed screw nut (5-6) which have opposite rotation directions are screwed on the distance adjusting screw rod (5-4); the two groups of cutting devices (6) are respectively fixedly connected with the left-handed screw nut (5-3) and the right-handed screw nut (5-6), and the two groups of cutting devices (6) are both in sliding connection with the distance-adjusting guide rail (5-5) through a sliding block; the device also comprises a screw rod drive (5-2) for driving the distance adjusting screw rod (5-4) to rotate; the axial direction of the distance adjusting screw rod (5-4) is vertical to the transmission direction of the density fiberboard.

3. The edge slitting apparatus for the production of density fiberboard of claim 1, wherein: the pressing plate device (4) comprises a pressing plate linear drive (4-5) which is fixedly connected to the portal frame (3) and has a downward extending end, a pressing plate lifting plate (4-3) is fixedly connected to the extending end of the pressing plate linear drive (4-5), a pressing plate roller holder (4-2) is arranged below the pressing plate lifting plate (4-3), a pressing plate roller (4-9) is rotatably connected to the pressing plate roller holder (4-2), and the axis of the pressing plate roller (4-9) is perpendicular to the transmission direction of the density fiberboard; a platen roller drive (4-8) for driving the platen roller (4-9) to rotate is fixedly connected to the platen roller seat (4-2), and a belt wheel transmission pair (4-1) is connected between the output end of the platen roller drive (4-8) and the platen roller (4-9) in a transmission manner; a plurality of groups of pressure plate guide rods (4-6) which are longitudinally arranged and are in sliding connection with the pressure plate lifting plate (4-3) are fixedly connected to the top surface of the pressure plate roller seat (4-2), a limiting plate is fixedly connected to the tops of the pressure plate guide rods (4-6), and pressure plate springs (4-7) positioned between the pressure plate lifting plate (4-3) and the pressure plate roller seat (4-2) are sleeved on the pressure plate guide rods (4-6).

4. The edge slitting apparatus for the production of density fiberboard of claim 1, wherein: the first conveying line (1) comprises a conveying rack (1-3), a plurality of groups of conveying rollers (1-2) which are transversely and uniformly distributed and are arranged in parallel are connected to the conveying rack (1-3), and the first conveying line further comprises a conveying transmission assembly (1-4) for transmitting power to the plurality of groups of conveying rollers (1-2) and a conveying power assembly (1-1) for driving the plurality of groups of conveying rollers (1-2) to synchronously rotate.

5. The edge slitting apparatus for the production of density fiberboard of claim 4, wherein: the first conveying line (1) and the second conveying line (7) are consistent in structure.