A punching device for processing medium density fiberboard

Abstract

A kind of medium density fiberboard processing puncher, including conveyor belt and drill, the conveyor belt includes first conveyor belt and second conveyor belt distributed in transverse direction, second support cylinder is arranged between the first conveyor belt and the second conveyor belt, second support cylinder top is equipped with pressing plate;The driver can drive the pressing plate to cover on the top of the plate, and make the pressing plate and plate synchronous on the conveyor belt, and when the pre-set hole position and the chip removal channel are in the same vertical line, the driver drives the drill to punch on the conveyor belt, support components are arranged on the upper and lower sides of the punching area, for reinforcing the drilling area of plate, and make the drilling area have stable support, avoid the bending deformation of plate when drilling, to reduce the risk of hole edge rupture in the process of punching, to improve the yield of plate product in the punching step.

Description

Technical Field

[0001] This invention belongs to the field of fiberboard processing technology, specifically referring to a drilling device for processing medium-density fiberboard. Background Technology

[0002] Medium-density fiberboard (MDF) is a type of engineered wood product made by mechanically separating and chemically treating wood or plant fibers, adding adhesives and waterproofing agents, and then molding under high temperature and pressure. This type of board has a uniform structure, avoids problems such as rot and insect infestation, has low expansion and contraction, and is easy to process, making it an ideal engineered wood product for furniture making. During the processing of MDF, drilling is required in the designed areas on the surface. This drilling step is one of the key steps in achieving standardized industrial production of panel furniture. Pre-drilling facilitates the connection of furniture hardware or the insertion of tenons to connect components, enabling the assembly and fixing of the furniture.

[0003] Because of the relatively loose structure of fiberboard, during the drilling process of medium-density fiberboard, if the drill speed is too fast, the pressure is too high, or the fiberboard itself is brittle, the drilling area of ​​the board may lack stable support during the drilling process, which may cause the hole edge to crack and reduce the yield of the product. Therefore, there is an urgent need for a drilling device that can improve the drilling yield of medium-density fiberboard. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention creatively employs a drilling device for medium-density fiberboard processing, so as to at least partially solve the problems mentioned in the background art.

[0005] The technical solution adopted is as follows: This embodiment of the invention proposes a drilling device for processing medium-density fiberboard, comprising:

[0006] Conveyor belts can transport sheet metal laterally;

[0007] The drilling rig is positioned above the conveyor belt;

[0008] A driver is located beside the conveyor belt and is capable of driving the drilling rig to move longitudinally and vertically.

[0009] The conveyor belt includes a first conveyor belt and a second conveyor belt distributed laterally. A second support cylinder is provided between the first conveyor belt and the second conveyor belt. The second support cylinder is located below the drilling rig and has a chip removal channel inside. A pressure plate is provided above the second support cylinder. The pressure plate has a preset hole. The driver can drive the pressure plate to cover the top of the plate and make the pressure plate and the plate move synchronously on the conveyor belt. When the preset hole and the chip removal channel are aligned vertically, the driver drives the drilling rig to drill holes in the plate.

[0010] Furthermore, the top surface of the second support cylinder is on the same plane as the top surfaces of the first and second conveyor belts. The second support cylinder is constructed as a quadrangular prism. In the longitudinal direction, the length of the chip removal channel is equal to the length of the conveyor belt, and in the transverse direction, the width of the chip removal channel is equal to the diameter of the preset hole.

[0011] Furthermore, the driver includes:

[0012] Two drive units are symmetrically arranged on both sides of the conveyor belt;

[0013] A first linear actuator is fixedly mounted on top of one of the drive stages;

[0014] The second linear actuator is fixedly installed at the output end of the first linear actuator, and the first linear actuator can drive the second linear actuator to move vertically.

[0015] A third linear actuator is disposed at the top interior of the drive stage;

[0016] The fourth linear actuator is fixedly installed at the output end of the third linear actuator, and the third linear actuator can drive the fourth linear actuator to move laterally.

[0017] The second linear actuator has the drilling rig fixedly mounted on its output end, and the second linear actuator can drive the drilling rig to move longitudinally. The fourth linear actuator has the pressure plate fixedly mounted on its output end, and the fourth linear actuator can drive the pressure plate to move vertically.

[0018] Furthermore, the pressure plate includes a pressure plate frame, which is constructed as a rectangular frame. A baffle protruding towards one side of the conveyor belt is fixedly provided at the end of the pressure plate frame. When the pressure plate frame is attached to the top surface of the plate, the baffle is located on the side of the plate and can push the plate and the pressure plate frame to move synchronously.

[0019] Furthermore, the pressure plate also includes a cover plate, which is disposed on the top of the pressure plate frame. A first support cylinder is fixedly provided on the side of the cover plate facing the inside of the pressure plate frame, and the preset hole passes through the first support cylinder.

[0020] Furthermore, a chip removal hole is provided on the peripheral side wall of the first support cylinder, so that the preset hole position is connected to the inner cavity of the pressure plate frame. A negative pressure pipe joint is fixed on the outer side wall of the pressure plate frame, and a chip removal window is provided on the inner wall of the pressure plate frame corresponding to the negative pressure pipe joint, so that the preset hole position is connected to the negative pressure pipe joint through the chip removal hole.

[0021] Furthermore, a fan is provided below the conveyor belt, and a negative pressure pipe is provided at the air intake of the fan. The other end of the negative pressure pipe is connected to the negative pressure pipe connector.

[0022] Furthermore, an electric heater is provided at the air outlet of the fan, and a hot air pipe is fixedly provided at the output end of the electric heater. A hot air nozzle is fixedly provided inside the first support cylinder, and the hot air nozzle is connected to the hot air pipe.

[0023] Furthermore, the input end of the negative pressure pipe is connected to the chip removal channel.

[0024] Furthermore, the first support cylinder is constructed as a cylindrical body, the preset hole is located at the axial position of the first support cylinder, and the end of the preset hole facing the drilling rig is constructed as an inverted cone shape.

[0025] The beneficial effects achieved by this invention are as follows:

[0026] This invention segments the conveyor belt, providing support components on both the upper and lower sides of the drilling area to reinforce the drilling area and ensure stable support. This prevents the sheet material from bending and deforming during drilling, reducing the risk of edge breakage and improving the yield rate of sheet products during the drilling process. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of a drilling device for processing medium-density fiberboard according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal structure of a drilling device for processing medium-density fiberboard according to an embodiment of the present invention;

[0029] Figure 3 A three-dimensional structural diagram of the pressure plate is provided for an embodiment of the present invention;

[0030] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0031] Figure 5 A schematic diagram of the pressure plate frame is provided for an embodiment of the present invention;

[0032] Figure 6 A schematic diagram of the cover plate is provided for an embodiment of the present invention.

[0033] Among them, 01, plate; 10, conveyor belt; 11, first conveyor belt; 12, second conveyor belt; 20, drilling rig; 30, driver; 301, drive platform; 31, first linear actuator; 32, second linear actuator; 33, third linear actuator; 34, fourth linear actuator; 40, pressure plate; 41, pressure plate frame; 410, chip removal window; 411, negative pressure pipe joint; 412, support arm; 413, baffle; 42, cover plate; 420, preset hole position; 421, hot air pipe joint; 43, first support cylinder; 430, chip removal hole; 44, hot air nozzle; 50, fan; 51, negative pressure pipe; 52, hot air pipe; 53, electric heater; 60, second support cylinder; 600, chip removal channel.

[0034] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0036] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments.

[0037] This invention provides a drilling device for processing medium-density fiberboard, which aims to avoid the occurrence of hole edge breakage during the drilling process and improve the yield of fiberboard drilling. The device mainly includes a conveyor belt 10, a drill 20 and a driver 30.

[0038] like Figure 1 and Figure 2As shown, the X direction is defined as the horizontal direction, the Y direction as the vertical direction, and the Z direction as the vertical direction. The conveyor belt 10 can transport the plate 01 horizontally. The drill 20 is set above the conveyor belt 10 and is used to drill holes in the plate 01. The driver 30 is set beside the conveyor belt 10 and can drive the drill 20 to move vertically and longitudinally. During operation, the plate 01 is placed on the conveyor belt 10, and the conveyor belt 10 transports the plate 01 horizontally. Along the way, it passes the drill 20. When the area on the plate 01 that needs to be drilled reaches directly below the drill 20 in the X direction, the conveyor belt 10 stops transporting, and the driver 30 drives the drill 20 to move vertically and longitudinally to perform drilling work on the plate 01.

[0039] Furthermore, in order to ensure that the plate 01 has sufficient support when the drilling rig 20 drills holes in the plate 01, so as to reduce the risk of cracking at the hole edge during drilling, the conveyor belt 10 includes a first conveyor belt 11 and a second conveyor belt 12 distributed in the transverse direction, wherein the conveying direction and width of the first conveyor belt 11 and the second conveyor belt 12 are the same, and the length of the first conveyor belt 11 and the second conveyor belt 12 can be selected according to the usage requirements. In some embodiments, the first conveyor belt 11 and the second conveyor belt 12 can be conveyed by belt conveying or roller conveying.

[0040] Furthermore, a second support cylinder 60 is provided between the first conveyor belt 11 and the second conveyor belt 12. The second support cylinder 60 is located below the drilling rig 20, and a chip removal channel 600 is provided inside the second support cylinder 60. In this way, when the medium density fiberboard is conveyed by the first conveyor belt 11 and passes under the drilling rig 20, this part of the area is supported by the second support cylinder 60. By setting the second support cylinder 60 under the drilling rig 20 to support the medium density fiberboard, stable support is provided to the bottom of the board 01 when the medium density fiberboard is drilled, and the board 01 can be prevented from bending and deforming downward.

[0041] like Figure 2 As shown, a pressure plate 40 is provided above the second support cylinder 60. The pressure plate 40 has a preset hole 420. The driver 30 can drive the pressure plate 40 to cover the top of the plate 01 and make the pressure plate 40 and the plate 01 move synchronously on the conveyor belt 10. When the preset hole 420 and the chip removal channel 600 are vertically aligned, the driver 30 drives the drill 20 to drill holes on the conveyor belt 10.

[0042] Thus, support components are provided on both the upper and lower sides of the sheet 01 to reinforce the drilling area of ​​the sheet 01 and provide stable support to the drilling area, thereby preventing the sheet 01 from bending and deforming during drilling and reducing the risk of hole edge breakage during the drilling process, thereby improving the yield of the sheet 01 product in the drilling step.

[0043] exist Figure 2In the example shown, the preset hole position 420 is located in the middle of the pressure plate 40. It should be understood that the position of the preset hole position 420 is not limited to a certain position. The preset hole position 420 is set according to the hole position required by the plate 01, and the number of preset hole positions 420 is not limited to one. Multiple preset holes can be set as needed.

[0044] In some embodiments, when there are multiple preset holes 420, taking one hole at each of the four corners of the plate 01 as an example, the corresponding preset holes 420 are also set on the pressure plate 40 at the positions corresponding to the holes. The plate 01 is first conveyed laterally by the first conveyor belt 11. When the hole on the plate 01 reaches directly below the drill rig 20 in the X direction, the conveyor belt 10 stops conveying, and the driver 30 drives the pressure plate 40 to make the preset hole 420 correspond to the hole on the plate 01, and moves downward to cover the top surface of the plate 01. Then, the driver 30 drives the drill rig 20 to move longitudinally. When the drill bit is directly above the preset hole 420, the driver 30 drives the drill rig 20 to move vertically downward, so that the drill bit passes through the preset hole 420 and impacts the plate. 01. Drilling: Since the upper and lower surfaces of the plate 01 are supported and fixed by the pressure plate 40 and the second support cylinder 60 respectively, the plate 01 will not deform during drilling, ensuring drilling accuracy and reducing damage to the plate 01. After the first hole is drilled, the driver 30 drives the drill 20 to move vertically downward and then vertically to above the second hole. The drill 20 is then driven to move vertically downward to drill holes on the surface of the plate 01. After the two holes in the vertical direction are drilled, the driver 30 drives the pressure plate 40 to move and slide the plate 01 along the transverse direction on the surface of the conveyor belt 10 until the other two holes on the plate 01 are also below the drill 20. The drilling process is repeated to complete drilling of four holes on the plate 01.

[0045] Furthermore, the top surface of the second support cylinder 60 is on the same plane as the top surfaces of the first conveyor belt 11 and the second conveyor belt 12, so that the plate 01 will not deform in the area between the first conveyor belt 11 and the second conveyor belt 12, thus ensuring the flatness of the plate 01. In addition, the second support cylinder 60 is constructed as a quadrangular prism. In the longitudinal direction, the length of the chip discharge channel 600 is equal to the length of the conveyor belt 10, and in the transverse direction, the width of the chip discharge channel 600 is equal to the diameter of the preset hole 420. In this way, the pressure plate 40 and the second support cylinder 60 can support the plate 01 from the upper and lower sides respectively, thereby reducing the risk of hole edge breakage during the drilling process.

[0046] like Figure 1 and Figure 2As shown, the driver 30 includes two drive stages 301 and a first linear actuator 31, a second linear actuator 32, a third linear actuator 33 and a fourth linear actuator 34 disposed on one of the drive stages 301.

[0047] Two drive platforms 301 are symmetrically arranged on both sides of the conveyor belt 10. A first linear actuator 31 is fixedly arranged on the top of one of the drive platforms 301. A second linear actuator 32 is fixedly arranged at the output end of the first linear actuator 31. The first linear actuator 31 can drive the second linear actuator 32 to move vertically. A third linear actuator 33 is arranged at the top of the inside of the drive platform 301. A fourth linear actuator 34 is fixedly arranged at the output end of the third linear actuator 33. The third linear actuator 33 can drive the fourth linear actuator 34 to move horizontally.

[0048] In some embodiments, the linear actuators described above can all adopt an electrically driven screw slide structure. The screw slide structure has the advantages of high precision and easy adjustment. The output end of the second linear actuator 32 is fixedly equipped with a drill 20. The second linear actuator 32 can drive the drill 20 to move longitudinally. With the cooperation of the first linear actuator 31 and the second linear actuator 32, the drill 20 can be driven to move longitudinally and vertically. Correspondingly, the output end of the fourth linear actuator 34 is fixedly equipped with a pressure plate 40. The fourth linear actuator 34 can drive the pressure plate 40 to move vertically. In this way, the drill 20 can drill holes at any position on the plate 01. At the same time, during drilling, the pressure plate 40 driven by the screw slide mechanism drives the plate 01 to move, which has higher precision than the conveyor belt 10.

[0049] like Figure 3 , Figure 4 and Figure 5 As shown, the pressure plate 40 includes a pressure plate frame 41, which is a rectangular frame. A baffle 413 protruding towards the side of the conveyor belt 10 is fixedly provided at the end of the pressure plate frame 41. When the pressure plate frame 41 is attached to the top surface of the plate 01, the baffle 413 is located on the side of the plate 01 and can push the plate 01 and the pressure plate frame 41 to move synchronously. At the same time, support arms 412 are provided at both ends of the pressure plate frame 41. The output end of the fourth linear actuator 34 is fixedly connected to the support arm 412. The fourth linear actuator 34 can drive the pressure plate frame 41 to move laterally and vertically.

[0050] like Figure 3 , Figure 4 and Figure 6 As shown, the pressure plate 40 also includes a cover plate 42, which is disposed on the top of the pressure plate frame 41. A first support cylinder 43 is fixedly provided on the side of the cover plate 42 facing the inside of the pressure plate frame 41, and a preset hole 420 passes through the first support cylinder 43.

[0051] In some embodiments, the first support cylinder 43 is constructed as a cylindrical body, and the preset hole 420 is located at the axial position of the first support cylinder 43. The end of the preset hole 420 facing the drill 20 is constructed as an inverted cone. Thus, the side of the preset hole 420 near the drill bit is set as an inverted cone, which facilitates the drill bit to enter the preset hole 420 and plays a certain guiding role.

[0052] Furthermore, a chip removal hole 430 is provided on the peripheral side wall of the first support cylinder 43, so that the preset hole position 420 is connected to the inner cavity of the pressure plate frame 41. In this way, when the drill 20 drills the plate 01, the drill bit first reaches the surface of the plate 01 through the preset hole position 420. During drilling, the chips generated by drilling will be discharged from the chip removal hole 430 into the inner space of the pressure plate frame 41, so as to avoid the accumulation of chips inside the preset hole position 420.

[0053] Furthermore, in order to remove the drilling debris in a timely manner during drilling, a negative pressure pipe joint 411 is fixedly provided on the outer wall of the pressure plate frame 41, and a chip removal window 410 is provided on the inner wall of the pressure plate frame 41 corresponding to the negative pressure pipe joint 411, so that the preset hole position 420 is connected to the negative pressure pipe joint 411 through the chip removal hole 430.

[0054] Meanwhile, a fan 50 is installed below the conveyor belt 10. A negative pressure pipe 51 is installed at the air inlet of the fan 50, and the other end of the negative pressure pipe 51 is connected to a negative pressure pipe connector 411. The fan 50 provides negative pressure suction to the inside of the pressure plate frame 41. In this way, the fan 50 is connected to the negative pressure pipe connector 411 on the pressure plate frame 41 through the negative pressure pipe 51 at its air inlet end, and can draw air from the inside of the pressure plate frame 41. When the debris generated during the drilling process reaches the inside of the pressure plate frame 41 through the chip discharge hole 430, under the action of the airflow of negative pressure suction, the generated debris is continuously drawn into the mesh bag inside the fan 50 for collection. In this way, there is no debris residue after drilling on the surface of the board 01.

[0055] Furthermore, the input end of the negative pressure pipe 51 is connected to the chip removal channel 600. Since the chip removal channel 600 inside the second support cylinder 60 is also connected to the air intake end of the blower 50, the debris generated by the drill rig 20 when drilling through the plate 01 will also be drawn from the chip removal channel 600 into the mesh bag inside the blower 50 for collection. It can be seen that the first support cylinder 43 and the second support cylinder 60 can not only play a supporting role, but also play a role in guiding and discharging debris.

[0056] In some embodiments, an electric heater 53 is provided at the air outlet of the fan 50, a hot air pipe 52 is fixedly provided at the output end of the electric heater 53, a hot air nozzle 44 is fixedly provided inside the first support cylinder 43, and a hot air pipe connector 421 is provided on the cover plate 42. One end of the hot air pipe connector 421 is connected to the hot air nozzle 44, and the other end is connected to the hot air pipe 52, so that the hot air nozzle 44 and the hot air pipe 52 are connected.

[0057] In this way, the airflow at the outlet of the fan 50 can achieve the effect of temperature increase after passing through the electric heater 53. Correspondingly, an appropriate amount of water or lubricant can be introduced into the hot air pipe 52 to increase the temperature and humidity in the drilling area of ​​the medium density fiberboard, soften the fiber to reduce its brittleness, and further reduce the risk of hole edge cracking during drilling.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A punching device for processing of medium density fiberboard, characterized in that, The utility model relates to a kind of drilling machine and drilling machine, including: Conveyer belt (10) can transport board (01) along transverse direction; Drilling machine (20) is arranged above the conveyer belt (10); Driver (30) is arranged on the side of the conveyer belt (10), and can drive the drilling machine (20) moves along longitudinal direction and / or vertical direction; Wherein, the conveyer belt (10) includes first conveyer belt (11) and second conveyer belt (12) distributed along transverse direction, second support cylinder (60) is arranged between the first conveyer belt (11) and the second conveyer belt (12), the second support cylinder (60) is below the drilling machine (20), and the second support cylinder (60) is provided with chip removal channel (600) in it, the second support cylinder (60) is provided with pressing plate (40) above, the pressing plate (40) is provided with preset hole position (420) on it, the driver (30) can drive the pressing plate (40) to cover on the top of the board (01), and make the pressing plate (40) and board (01) synchronous on the conveyer belt (10) move, and when the preset hole position (420) and the chip removal channel (600) are in the same straight line in vertical direction, the driver (30) drives the drilling machine (20) to punch on the board (01); The pressing plate (40) includes pressing plate frame (41), the pressing plate frame (41) is configured as rectangular frame body, the end of the pressing plate frame (41) is fixedly provided with baffle (413) protruding to the side of the conveyer belt (10), when the pressing plate frame (41) is attached to the top surface of the board (01), the baffle (413) is at the side of the board (01), and can push the board (01) and the pressing plate frame (41) synchronous movement, the pressing plate (40) further includes cover plate (42), the cover plate (42) is arranged on the top of the pressing plate frame (41), the side of the cover plate (42) towards the inside of the pressing plate frame (41) is fixedly provided with first support cylinder (43), and the preset hole position (420) penetrates the first support cylinder (43).

2. The punching device for processing medium density fiberboard according to claim 1, characterized in that: The top surface of the second support cylinder (60) and the top surface of the first conveyer belt (11) and the second conveyer belt (12) are in the same plane, the second support cylinder (60) is configured as four prism, along longitudinal direction, the length of the chip removal channel (600) is equal to the length of the conveyer belt (10), along transverse direction, the width of the chip removal channel (600) is equal to the diameter of the preset hole position (420).

3. The punching device for processing medium density fiberboard according to claim 1, characterized in that: The driver (30) includes: Two drive stations (301) are symmetrically arranged on both sides of the conveyer belt (10); First linear actuator (31) is fixedly arranged on the top of one of the drive stations (301); Second linear actuator (32) is fixedly arranged on the output end of the first linear actuator (31), and the first linear actuator (31) can drive the second linear actuator (32) to move vertically; Third linear actuator (33) is arranged on the inside top end of the drive station (301). A fourth linear actuator (34) is fixedly arranged at the output end of the third linear actuator (33), and the third linear actuator (33) can drive the fourth linear actuator (34) to move in the transverse direction; The output end of the second linear actuator (32) is fixedly arranged with the drilling machine (20), the second linear actuator (32) can drive the drilling machine (20) to move in the longitudinal direction, and the output end of the fourth linear actuator (34) is fixedly arranged with the pressing plate (40), and the fourth linear actuator (34) can drive the pressing plate (40) to move in the vertical direction.

4. The punching device for processing medium density fiberboard according to claim 1, characterized in that: A chip removal hole (430) is arranged on the circumferential wall of the first supporting cylinder (43), so that the preset hole position (420) is in communication with the inner cavity of the pressing plate frame (41). A negative pressure pipe joint (411) is fixedly arranged on the outer wall of the pressing plate frame (41), and a chip removal window (410) is arranged on the inner wall of the pressing plate frame (41) corresponding to the negative pressure pipe joint (411), so that the preset hole position (420) is in communication with the negative pressure pipe joint (411) through the chip removal hole (430).

5. The punching device for processing medium density fiberboard according to claim 4, characterized in that: A fan (50) is arranged below the conveying belt (10), a negative pressure pipe (51) is arranged at the air suction port of the fan (50), and the other end of the negative pressure pipe (51) is in communication with the negative pressure pipe joint (411).

6. The punching device for processing medium density fiberboard according to claim 5, characterized in that: An electric heater (53) is arranged at the air outlet of the fan (50), the output end of the electric heater (53) is fixedly arranged with a hot air pipe (52), the inside of the first supporting cylinder (43) is fixedly arranged with a hot air nozzle (44), and the hot air nozzle (44) is in communication with the hot air pipe (52).

7. The punching device for processing medium density fiberboard according to claim 5, characterized in that: The input end of the negative pressure pipe (51) is in communication with the chip removal channel (600).

8. The punching device for processing medium density fiberboard according to claim 1, characterized in that: The first supporting cylinder (43) is in the shape of a cylindrical cylinder, the preset hole position (420) is located at the axis position of the first supporting cylinder (43), and one end of the preset hole position (420) facing the drilling machine (20) is in the shape of an inverted cone.

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