Perforating device for medium-density fiberboard processing

Abstract

A punching device for medium density fiberboard processing comprises a conveying belt and a drilling machine, the conveying belt comprises a first conveying belt body and a second conveying belt body which are distributed in the transverse direction, a second supporting cylinder is arranged between the first conveying belt body and the second conveying belt body, and a pressing plate is arranged above the second supporting cylinder; the driver can drive the pressing plate to cover the top of the plate and enable the pressing plate and the plate to synchronously move on the conveying belt, and when the preset hole site and the chip removal channel are located on the same straight line in the vertical direction, the driver drives the drilling machine to drill holes in the conveying belt. The supporting components are arranged on the upper side and the lower side of the drilling area and used for reinforcing the drilling area of the plate and enabling the drilling area to have stable supporting performance, bending deformation of the plate in the drilling process is avoided, the risk of hole edge breakage in the drilling process is reduced, and therefore the yield of plate products in the drilling step is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of fiberboard processing, and in particular relates to a punching device for medium-density fiberboard processing. Background Art

[0002] Medium-density fiberboard is a kind of man-made board made by mechanically separating and chemically treating wood or plant fibers, adding adhesives and waterproofing agents, and then forming them at high temperature and high pressure. This board has a uniform structure, avoids problems such as decay and insect infestation, has low expansion and contraction, and is easy to process. It is an ideal man-made board for making furniture. When processing medium-density fiberboard, it is necessary to drill holes in the surface design area. The drilling step is one of the key steps to achieve the industrialized production of standardized panel furniture. Pre-drilling is used to facilitate the connection of furniture hardware or the insertion of tenons to connect components, so as to achieve the assembly and fixation of furniture.

[0003] Due to the loose structure of fiberboard, when drilling holes in medium-density fiberboard, the drilling speed is too fast, the pressure is too high, or the fiberboard itself is brittle. During the drilling process, the drilling area of ​​the board lacks stable support, which may cause the hole edge to break and lead to a decrease in the yield rate of the product. Therefore, there is an urgent need for a punching device that can improve the drilling yield rate of medium-density fiberboard. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention creatively adopts a punching device for processing medium density fiberboard to at least partially solve the problems raised in the above background technology.

[0005] The technical solution adopted is as follows: The embodiment of the present invention proposes a punching device for medium density fiberboard processing, comprising: Conveyor belt, which can transport the plates in the horizontal direction; A drilling rig, arranged above the conveyor belt; A driver, arranged beside the conveyor belt and capable of driving the drilling rig to move longitudinally and vertically; Wherein, the conveyor belt includes a first conveyor belt and a second conveyor belt distributed in the transverse direction, a second support cylinder is arranged between the first conveyor belt and the second conveyor belt, the second support cylinder is located below the drilling rig, and a chip removal channel is arranged in the second support cylinder, a pressure plate is arranged above the second support cylinder, and a preset hole position is arranged on the pressure plate, 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, and when the preset hole position and the chip removal channel are in the same straight line vertically, the driver drives the drilling rig to drill holes on the conveyor belt.

[0006] Furthermore, the top surface of the second support cylinder is in the same plane as the top surfaces of the first conveyor belt and the second conveyor belt. The second support cylinder is constructed as a quadrangular prism. Along the longitudinal direction, the length of the chip removal channel is equal to the length of the conveyor belt. Along the transverse direction, the width of the chip removal channel is equal to the diameter of the preset hole position.

[0007] Furthermore, the driver comprises: Two driving platforms are symmetrically arranged on both sides of the conveyor belt; A first linear actuator is fixedly mounted on the top of one of the drive platforms; A second linear actuator is fixedly arranged at an output end of the first linear actuator, and the first linear actuator can drive the second linear actuator to move vertically; A third linear actuator is disposed on the inner top end of the driving platform; A fourth linear actuator is fixedly arranged at an output end of the third linear actuator, and the third linear actuator can drive the fourth linear actuator to move in a lateral direction; The drilling rig is fixedly provided at the output end of the second linear actuator, and the second linear actuator can drive the drilling rig to move longitudinally. The pressure plate is fixedly provided at the output end of the fourth linear actuator, and the fourth linear actuator can drive the pressure plate to move vertically.

[0008] Furthermore, the pressure plate includes a pressure plate frame, which is constructed as a rectangular frame. A baffle protruding toward 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.

[0009] Furthermore, the pressing plate also includes a cover plate, which is arranged on the top of the pressing plate frame. A first supporting tube is fixedly provided on one side of the covering plate facing the inside of the pressing plate frame, and the preset hole passes through the first supporting tube.

[0010] Furthermore, a chip removal hole is opened on the peripheral side wall of the first support cylinder, so that the preset hole position is connected with the inner cavity of the pressure plate frame, a negative pressure pipe joint is fixedly provided on the outer wall of the pressure plate frame, and a chip removal window is opened on the inner wall of the pressure plate frame corresponding to the negative pressure pipe joint, so that the preset hole position is connected with the negative pressure pipe joint through the chip removal hole.

[0011] Furthermore, a fan is provided below the conveyor belt, a negative pressure pipe is provided at the air suction port of the fan, and the other end of the negative pressure pipe is connected to the negative pressure pipe joint.

[0012] Furthermore, an electric heater is provided at the air outlet of the fan, 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 tube, and the hot air nozzle is connected to the hot air pipe.

[0013] Furthermore, the input end of the negative pressure tube is connected to the chip removal channel.

[0014] Furthermore, the first support tube is configured as a cylindrical body, the preset hole is located at an axial position of the first support tube, and the preset hole is configured as an inverted cone at one end facing the drilling rig.

[0015] The beneficial effects achieved by the present invention are as follows: The present invention divides the conveyor belt into sections so that support components are provided on the upper and lower sides of the punching area of ​​the plate, which are used to strengthen the drilling area of ​​the plate and make the drilling area have stable support to avoid bending and deformation of the plate during drilling, thereby reducing the risk of hole edge breakage during the punching process, thereby improving the yield of the plate product in the punching step. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a punching device for processing medium-density fiberboard proposed in an embodiment of the present invention; Figure 2 A schematic diagram of the internal structure of a punching device for processing medium density fiberboard proposed in an embodiment of the present invention; Figure 3 A schematic diagram of the three-dimensional structure of a pressing plate provided in an embodiment of the present invention; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction; Figure 5 A schematic diagram of the structure of a pressure plate frame is provided for an embodiment of the present invention; Figure 6 The present invention provides a structural schematic diagram of a cover plate according to an embodiment of the present invention.

[0017] 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 tube; 430, chip removal hole; 44, hot air nozzle; 50, fan; 51, negative pressure pipe; 52, hot air pipe; 53, electric heater; 60, second support tube; 600, chip removal channel.

[0018] The accompanying drawings are used to provide further understanding of the embodiments and constitute a part of the specification. They are used for explanation together with the embodiments and do not constitute a limitation of the embodiments. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection.

[0020] In the description of the embodiments, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments.

[0021] In an embodiment of the present invention, a punching device for processing medium-density fiberboard is provided, which aims to avoid the occurrence of hole edge breakage during the punching process and improve the yield rate of fiberboard punching. The device mainly includes a conveyor belt 10, a drill rig 20 and a driver 30.

[0022] like Figure 1 and Figure 2 As shown, the X direction is set as the horizontal direction, the Y direction is set as the longitudinal direction, and the Z direction is set as the vertical direction. The conveyor belt 10 can convey the plate 01 in the horizontal direction. The drill 20 is arranged above the conveyor belt 10 and is used to punch holes in the plate 01. The driver 30 is arranged beside the conveyor belt 10 and can drive the drill 20 to move in the longitudinal and vertical directions. When working, the plate 01 is placed on the conveyor belt 10, and the conveyor belt 10 conveys the plate 01 in the horizontal direction and passes through the drill 20 on the way. 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 conveying, and the driver 30 drives the drill 20 to move in the longitudinal and vertical directions to perform drilling work on the plate 01.

[0023] 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 of the hole edges 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 consistent, and the length of the first conveyor belt 11 and the second conveyor belt 12 can be selected according to usage requirements. In some embodiments, the first conveyor belt 11 and the second conveyor belt 12 can be transported by belt conveying or roller conveying.

[0024] 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 in the second support cylinder 60. In this way, when the medium density fiberboard passes under the drilling rig 20 after being transported by the first conveyor belt 11, this part of the area is supported by the second support cylinder 60. By arranging the second support cylinder 60 below the drilling rig 20 to support the medium density fiberboard, stable support is provided for the bottom of the plate 01 when punching holes in the medium density fiberboard, thereby preventing the plate 01 from bending and deforming downward.

[0025] like Figure 2 As shown, a pressure plate 40 is provided above the second support cylinder 60, and a preset hole position 420 is provided on the pressure plate 40. 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, and when the preset hole position 420 and the chip removal channel 600 are in the same straight line vertically, the driver 30 drives the drill 20 to drill holes on the conveyor belt 10.

[0026] In this way, supporting components are arranged on the upper and lower sides of the plate 01 to strengthen the drilling area of ​​the plate 01 and provide the drilling area with stable support to prevent the plate 01 from bending and deforming during drilling, thereby reducing the risk of breakage of the hole edge during the drilling process, thereby improving the yield of the plate 01 product in the drilling step.

[0027] exist Figure 2 In 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 to be opened in the plate 01, and the number of the preset hole position 420 is not limited to one, and multiple holes can be set according to demand.

[0028] In some embodiments, when there are multiple preset hole positions 420, taking one hole position at each of the four corners of the plate 01 as an example, preset hole positions 420 are also set at the positions corresponding to the hole positions on the corresponding pressing plate 40, and the plate 01 is first conveyed in the transverse direction on the first conveyor belt 11. When the hole position on the plate 01 reaches directly below the drilling rig 20 in the X direction, the conveyor belt 10 stops conveying, and the driver 30 drives the pressing plate 40 to make the preset hole position 420 correspond to the hole position on the plate 01, and move downward to cover the top surface of the plate 01, and then the driver 30 drives the drilling rig 20 to move longitudinally. When the drill bit is directly above the preset hole position 420, the driver 30 drives the drilling rig 20 to move vertically downward, so that the drill bit passes through the preset hole position 420 to hit the plate 01 surface drilling. At this time, since the upper and lower side surfaces of the plate 01 are supported and fixed by the pressing plate 40 and the second support tube 60 respectively, the plate 01 will not be deformed during drilling, thereby ensuring the accuracy of drilling and reducing the damage to the plate 01. After the first hole is drilled, the driver 30 drives the drill rig 20 to move vertically downward, and drives the drill rig 20 to move longitudinally above the second hole, and then drives the drill rig 20 to move vertically downward to drill the surface of the plate 01. After the two longitudinal holes are drilled, the driver 30 drives the pressing plate 40 to move, and carries the plate 01 to slide in the horizontal direction on the surface of the conveyor belt 10 until the other two holes on the plate 01 are also below the drill rig 20. The above-mentioned drilling work is repeated to complete the drilling of four holes on the plate 01.

[0029] Furthermore, the top surface of the second support cylinder 60 is in the same plane as the top surfaces of the first conveyor belt 11 and the second conveyor belt 12, so that the area between the first conveyor belt 11 and the second conveyor belt 12 will not be deformed, thereby ensuring the straightness of the plate 01, and the second support cylinder 60 is constructed as a quadrangular prism. Along the longitudinal direction, the length of the chip removal channel 600 is equal to the length of the conveyor belt 10, and along the transverse direction, the width of the chip removal channel 600 is equal to the diameter of the preset hole position 420. In this way, the pressing plate 40 and the second support cylinder 60 can support the plate 01 from the upper and lower sides of the plate 01 respectively to reduce the risk of breakage of the hole edge during the punching process.

[0030] like Figure 1 and Figure 2 As shown, the driver 30 includes two driving platforms 301 and a first linear actuator 31 , a second linear actuator 32 , a third linear actuator 33 and a fourth linear actuator 34 which are arranged on one of the driving platforms 301 .

[0031] Among them, two driving platforms 301 are symmetrically arranged on both sides of the conveyor belt 10, the first linear actuator 31 is fixedly arranged on the top of one of the driving platforms 301, the second linear actuator 32 is fixedly arranged at 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, the third linear actuator 33 is arranged at the inner top of the driving platform 301, and the 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 horizontally.

[0032] In some embodiments, the above-mentioned linear actuators can all adopt an electrically driven screw slide structure, which has the advantages of high precision and easy control. The output end of the second linear actuator 32 is fixedly provided with a drill rig 20, and the second linear actuator 32 can drive the drill rig 20 to move longitudinally. With the cooperation of the first linear actuator 31 and the second linear actuator 32, the drill rig 20 can be driven to move longitudinally and vertically. Correspondingly, the output end of the fourth linear actuator 34 is fixedly provided with a pressure plate 40, and the fourth linear actuator 34 can drive the pressure plate 40 to move vertically. In this way, the drill rig 20 can drill holes at any position of the plate 01. At the same time, when drilling, the plate 01 is driven by the pressure plate 40 driven by the screw slide mechanism to move, which has higher precision than the transmission by the conveyor belt 10.

[0033] like Figure 3 , Figure 4 and Figure 5 As shown, the pressure plate 40 includes a pressure plate frame 41, which is constructed as a rectangular frame. A baffle 413 protruding toward one 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 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 also 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 horizontally, and the fourth linear actuator 34 can drive the pressure plate frame 41 to move vertically.

[0034] like Figure 3 , Figure 4 and Figure 6 As shown, the pressing plate 40 further includes a cover plate 42 , which is disposed on the top of the pressing plate frame 41 , and a first support tube 43 is fixedly disposed on one side of the cover plate 42 facing the inside of the pressing plate frame 41 , and a preset hole 420 passes through the first support tube 43 .

[0035] In some embodiments, the first support tube 43 is constructed as a cylindrical body, and the preset hole position 420 is located at the axial position of the first support tube 43. The preset hole position 420 is constructed as an inverted cone at one end facing the drilling rig 20. In this way, the side of the preset hole position 420 close to the drill bit is set to an inverted cone, which is conducive to the drill bit entering the preset hole position 420 and plays a certain guiding role.

[0036] Furthermore, a chip removal hole 430 is opened on the peripheral side wall of the first support cylinder 43, so that the preset hole position 420 is connected with the inner cavity of the pressure plate frame 41. In this way, when the drilling rig 20 drills the plate 01, the drill bit first passes through the preset hole position 420 to reach the surface of the plate 01. When drilling, the debris generated by drilling will be discharged from the chip removal hole 430 to the internal space of the pressure plate frame 41, avoiding the accumulation of debris inside the preset hole position 420.

[0037] Furthermore, in order to discharge the debris generated by drilling in time while 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 opened 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 with the negative pressure pipe joint 411 through the chip removal hole 430.

[0038] At the same time, a fan 50 is provided below the conveyor belt 10, and a negative pressure pipe 51 is provided at the air suction port of the fan 50. The other end of the negative pressure pipe 51 is connected to the negative pressure pipe joint 411, and negative pressure attraction is provided to the press plate frame 41 through the fan 50. In this way, the fan 50 is connected to the negative pressure pipe joint 411 on the press plate frame 41 through the negative pressure pipe 51 at its air suction port end, and can suck air from the inside of the press plate frame 41. When the debris generated during the drilling process reaches the inside of the press plate frame 41 from the chip removal hole 430, the generated debris is continuously sucked into the mesh bag inside the fan 50 for collection under the action of the airflow of negative pressure attraction. In this way, no debris can be left after drilling on the surface of the plate 01.

[0039] Furthermore, the input end of the negative pressure tube 51 is connected to the chip removal channel 600. Since the chip removal channel 600 in the second support tube 60 is also connected to the suction end of the fan 50, the chips generated by the drill rig 20 when drilling through the plate 01 will also be sucked from the chip removal channel 600 and collected in the mesh bag inside the fan 50. It can be seen that the first support tube 43 and the second support tube 60 can not only play a supporting role, but also play a role in guiding and discharging chips.

[0040] 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 tube 43, and a hot air pipe joint 421 is provided on the cover plate 42, one end of the hot air pipe joint 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 is connected to the hot air pipe 52.

[0041] In this way, the airflow at the outlet of the fan 50 can achieve the effect of increasing the temperature after passing through the electric heater 53. Correspondingly, a proper amount of water or lubricant can be introduced into the hot air pipe 52. In this way, the temperature and humidity of the drilling area of ​​the medium-density fiberboard are increased, the fibers are softened to reduce their brittleness, and the risk of cracking at the edge of the hole during drilling is further reduced.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] The above description of the implementation mode is not restrictive. The figure shown in the drawings is only one of the implementation modes, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the scope of protection.

Claims

1. A punching device for medium density fiberboard processing, characterized in that: include: A conveyor belt (10) capable of conveying the plate (01) in a transverse direction; A drilling machine (20) is arranged above the conveyor belt (10); A driver (30) is arranged beside the conveyor belt (10) and is capable of driving the drilling rig (20) to move longitudinally and / or vertically; The conveyor belt (10) comprises a first conveyor belt (11) and a second conveyor belt (12) which are distributed in a transverse direction, a second support tube (60) is provided between the first conveyor belt (11) and the second conveyor belt (12), the second support tube (60) is located below the drilling machine (20), and a chip removal channel (600) is provided in the second support tube (60), a pressing plate (40) is provided above the second support tube (60), and a preset hole position (420) is provided on the pressing plate (40), the driver (30) can drive the pressing plate (40) to cover the top of the plate (01), and make the pressing plate (40) and the plate (01) move synchronously on the conveyor belt (10), and when the preset hole position (420) and the chip removal channel (600) are in the same straight line in the vertical direction, the driver (30) drives the drilling machine (20) to punch holes on the conveyor belt (10).

2. The punching device for medium density fiberboard processing according to claim 1, characterized in that: The top surface of the second support cylinder (60) is in the same plane as the top surfaces of the first conveyor belt (11) and the second conveyor belt (12); the second support cylinder (60) is constructed as a quadrangular prism; along the longitudinal direction, the length of the chip removal channel (600) is equal to the length of the conveyor belt (10); along the 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 medium density fiberboard processing according to claim 1, characterized in that: The driver (30) comprises: Two driving platforms (301) are symmetrically arranged on both sides of the conveyor belt (10); A first linear actuator (31) fixedly arranged on the top of one of the driving platforms (301); A second linear actuator (32) is fixedly arranged at an output end of the first linear actuator (31), and the first linear actuator (31) can drive the second linear actuator (32) to move vertically; A third linear actuator (33) is arranged on the inner top end of the driving platform (301); a fourth linear actuator (34) fixedly arranged at an output end of the third linear actuator (33), wherein the third linear actuator (33) can drive the fourth linear actuator (34) to move in a lateral direction; The drilling rig (20) is fixedly mounted on the output end of the second linear actuator (32), and the second linear actuator (32) can drive the drilling rig (20) to move longitudinally; the pressure plate (40) is fixedly mounted on the output end of the fourth linear actuator (34), and the fourth linear actuator (34) can drive the pressure plate (40) to move vertically.

4. The punching device for medium density fiberboard processing according to claim 1, characterized in that: The pressing plate (40) comprises a pressing plate frame (41), wherein the pressing plate frame (41) is constructed as a rectangular frame, and a baffle (413) protruding toward one side of the conveyor belt (10) is fixedly provided at the end of the pressing plate frame (41), and when the pressing 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 pressing plate frame (41) to move synchronously.

5. The punching device for medium density fiberboard processing according to claim 4, characterized in that: The pressing plate (40) further comprises a cover plate (42), wherein the cover plate (42) is arranged on the top of the pressing plate frame (41), and a first support tube (43) is fixedly provided on one side of the cover plate (42) facing the inside of the pressing plate frame (41), and the preset hole (420) passes through the first support tube (43).

6. The punching device for medium density fiberboard processing according to claim 5, characterized in that: A chip removal hole (430) is provided on the peripheral side wall of the first support tube (43), so that the preset hole position (420) is connected to the inner cavity of the pressure plate frame (41); a negative pressure pipe joint (411) is fixedly provided on the outer side 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).

7. The punching device for medium density fiberboard processing according to claim 6, characterized in that: A fan (50) is provided below the conveyor belt (10), a negative pressure pipe (51) is provided at the air suction port of the fan (50), and the other end of the negative pressure pipe (51) is connected to the negative pressure pipe joint (411).

8. The punching device for medium density fiberboard processing according to claim 7, characterized in that: 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 tube (43), and the hot air nozzle (44) is in communication with the hot air pipe (52).

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

10. The punching device for medium density fiberboard processing according to claim 5, characterized in that: The first support tube (43) is configured as a cylindrical body, the preset hole position (420) is located at an axial position of the first support tube (43), and one end of the preset hole position (420) facing the drilling machine (20) is configured as an inverted cone.

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