Fiberboard polishing and grinding device and using method thereof

Abstract

The invention discloses a fiberboard polishing and grinding device and a using method thereof, and relates to the field of fiberboard polishing and grinding devices. According to the fiberboard polishing and grinding device and the using method thereof, a transmission frame, a limiting unit, an extrusion unit, a contact unit and a connecting frame are arranged in a sanding machine. According to the fiberboard polishing and grinding device and the using method thereof, the limiting plates make contact with and extrude the two sides of the fiberboard, under the action of the limiting plates, the fiberboard is limited, the situation that the fiberboard deviates in the polishing and grinding process, the polishing and grinding effects of different areas are different is avoided, the grinding effect is better adjusted by adjusting the compression degree of the guide rods, and the polishing and grinding efficiency is improved. The two connecting frames have a height difference, so that the two grinding wheels can be in contact with the fiberboard conveniently, rough grinding is performed through the front grinding wheel, fine grinding is performed through the rear grinding wheel, and the grinding effect and the grinding efficiency are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of fiberboard polishing and grinding devices, in particular to a fiberboard polishing and grinding device and a use method thereof. Background Art

[0002] The fiberboard polishing and grinding device is a device used to polish and grind the surface of fiberboard to improve the gloss and quality of the fiberboard.

[0003] When polishing and grinding the fiberboard, the fiberboard is placed on a transmission belt and transferred into a polishing and grinding machine. The fiberboard is polished and grinded by a grinding wheel to remove uneven parts, burrs and rough areas on the surface of the fiberboard, making the surface smoother and more uniform, improving the appearance quality of the fiberboard, and facilitating the smooth progress of subsequent processing.

[0004] In the prior art, when polishing and grinding a fiberboard, the fiberboard is simply placed directly on a conveyor belt, which is used to move the fiberboard so that the fiberboard contacts the grinding wheel for grinding. The contact strength between the grinding wheel and the fiberboard cannot be controlled, resulting in an inability to achieve an appropriate grinding effect. At the same time, when grinding, the fiberboard is not limited, and it shakes left and right during the grinding process, resulting in deviations in the degree of grinding in different areas, further affecting the grinding effect. Moreover, only one grinding wheel is used for grinding, and the grinding effect of a coarse grinding wheel is poor. The grinding effect of a fine grinding wheel is better, but its grinding speed is slow. Therefore, we propose a fiberboard polishing and grinding device and a method for using the same. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a fiberboard polishing and grinding device and a method of using the same, which solves the problem that the contact force between the grinding wheel and the fiberboard cannot be controlled; when grinding, the fiberboard is not limited, and it shakes left and right during the grinding process, so that the grinding degree of different areas deviates, further affecting the grinding effect, and only one grinding wheel is used for grinding, the grinding effect of the coarse grinding wheel is poor, and the grinding effect of the fine grinding wheel is better, but the grinding speed is slow.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fiberboard polishing and grinding device and a method of using the same, comprising a sanding machine and a support frame, wherein the support frame is installed in the sanding machine, and rotating doors are installed on both sides of the sanding machine. The sanding machine is provided with a transmission frame, a limit unit, an extrusion unit, a contact unit and a connecting frame, wherein the transmission frame is slidably connected in the sanding machine, and the connecting frame is slidably connected to the inner wall of the transmission frame, the transmission frame and the connecting frame are located above the support frame, the limit unit is located on both sides of the support frame, the extrusion unit is located in the transmission frame, and the contact unit is located between the connecting frames. The limiting unit includes a plurality of first push rods respectively connected to both sides of the transmission frame, the other end of the first push rod is rotatably connected to the second push rod, and the other ends of two corresponding second push rods are rotatably connected to the limiting plates, and the two limiting plates are located on both sides of the support frame; The extrusion unit comprises a cylinder fixedly mounted on the top end surface of the sanding machine, the output end of the cylinder is connected to a connecting plate, and the connecting plate is slidably connected in the transmission frame; The contact unit comprises racks fixedly connected to the connecting frame, and gears are meshed between the racks.

[0007] Preferably, the internal transmission of the support frame is connected with a transmission belt, the output end of the transmission belt is connected to the driving motor, a grinding wheel is arranged directly above the transmission belt, the grinding wheel is rotatably connected to the inner wall of the connecting frame, a driving mechanism is installed on the connecting frame, and the driving mechanism is transmission-connected to the grinding wheel.

[0008] Preferably, connecting blocks are fixedly connected on both sides of the connecting frame, the connecting blocks are rotatably connected to the first push rod, the first push rod is rotatably connected to the first rotating seat on the side away from the connecting block, the bottom end face of the first rotating seat is fixedly connected to the second rotating seat, the inner wall of the second rotating seat is rotatably connected to the second push rod, and the second rotating seat and the first rotating seat are used to connect the first push rod and the second push rod.

[0009] Preferably, the bottom end surface of the second rotating seat is fixedly connected to a limiting seat, the outer peripheral wall of the limiting seat is slidably connected to a guide rail, and the guide rail is fixedly connected to the sanding machine.

[0010] Preferably, a slide rail is fixedly connected to the outer wall of the connecting frame, and the slide rail is slidably connected to a slide groove provided on the transmission frame.

[0011] Preferably, a connecting seat is fixedly connected to the inner wall of the transmission frame, and the connecting seat is slidably connected to the connecting plate. A guide rod is fixedly connected to the inner wall of the connecting seat, and the guide rod is slidably connected to the connecting plate, and the guide rod is fitted with the upper end of the connecting plate.

[0012] Preferably, a spring is sleeved on the outer peripheral wall of the guide rod, and the upper and lower ends of the spring are fixedly connected to the connecting plate and the connecting seat respectively.

[0013] Preferably, a sliding rod is slidably connected to the inner wall of the transmission frame, the upper end of the sliding rod is in contact with the transmission frame, the lower end of the sliding rod is fixedly connected to a rotating frame, and the rotating frame is rotatably connected to the gear.

[0014] A method for using a fiberboard polishing and grinding device comprises the following steps: The fiberboard is placed on the support frame, and the fiberboard is driven to move by the transmission belt, and the cylinder is started to drive the connecting plate to move downward, and the connecting seat and the transmission frame move downward in the sanding machine, driving the connecting block to move, and pushing the first push rod to rotate; The first push rod pushes the second push rod to rotate, and the limiting plates on both sides of the support frame move toward each other until the limiting plates contact and squeeze the two sides of the fiberboard, pushing the fiberboard to the center position, and under the action of the limiting plates, the fiberboard is limited; When the cylinder continues to drive the transmission frame downward, the grinding wheel in the front contacts and squeezes the fiberboard, pushing the connecting frame to drive the slide rail to slide along the inner wall of the transmission frame. When the slide rail contacts the top of the transmission frame, the connecting frame and the grinding wheel cannot move. The cylinder drives the connecting plate to continue to move. At this time, the transmission frame cannot move, and the connecting plate is pushed to slide along the outer peripheral wall of the guide rod, compressing the spring. Under the rebound of the spring, the connecting seat and the transmission frame are pushed downward. The thrust acts on the connecting frame and the grinding wheel, thereby limiting the extrusion force between the grinding wheel and the fiberboard. After the fiberboard is polished by the grinding wheel on the front connecting frame, the grinding wheel on the connecting frame performs rough polishing. Due to the rough polishing of the fiberboard, the height changes at this time. When the fiberboard contacts the grinding wheel, the connecting frame is pushed to move. At this time, the rack drives the gear to rotate, thereby driving another rack to drive the corresponding connecting frame to move downward. Both grinding wheels are in contact with the fiberboard, and fine polishing is performed through the rear grinding wheel to ensure the polishing effect and efficiency.

[0015] The present invention discloses a fiberboard polishing and grinding device and a method for using the same, which have the following beneficial effects: The fiberboard polishing and grinding device and the use method thereof drive the connecting block to move under the movement of the transmission frame, push the first push rod and the second push rod to rotate, so that the limit plates on both sides of the support frame move toward each other until the limit plates contact and squeeze the two sides of the fiberboard, and push the fiberboard to the center position. Under the action of the limit plates, the fiberboard is limited to avoid it from being offset during polishing and grinding, resulting in different polishing and grinding effects in different areas.

[0016] The fiberboard polishing and grinding device and the use method thereof are as follows: when the cylinder drives the connecting plate to move, the connecting plate is pushed to slide along the outer peripheral wall of the guide rod, the spring is compressed, and under the rebound of the spring, the connecting seat and the transmission frame are pushed downward, and the thrust acts on the connecting frame and the grinding wheel, thereby limiting the squeezing force between the grinding wheel and the fiberboard, and the grinding effect can be better adjusted by adjusting the compression degree of the guide rod.

[0017] The fiberboard polishing and grinding device and its use method, when the fiberboard contacts the grinding wheel, the connecting frame is pushed to move, so that the rack on the connecting frame moves accordingly, and the rack drives the gear to rotate, thereby driving another rack to drive the corresponding connecting frame to move downward, and at this time, there is a height difference between the two connecting frames, which facilitates the two grinding wheels to contact the fiberboard, and rough grinding is performed by the front grinding wheel, and fine grinding is performed by the rear grinding wheel, thereby ensuring the grinding effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the sanding machine of the present invention; Figure 3 This is a schematic diagram of the connection of the limiting unit of the present invention; Figure 4 It is a schematic diagram of the structure of the limiting unit of the present invention; Figure 5 It is an enlarged view of the partial structure of the limiting unit of the present invention; Figure 6 It is a schematic diagram of the internal structure of the transmission frame of the present invention; Figure 7 It is a schematic diagram of the structure of the extrusion unit of the present invention; Figure 8 It is a schematic diagram of the contact unit structure of the present invention.

[0020] In the figure: 1. sanding machine; 2. support frame; 201. transmission belt; 3. rotating door; 4. transmission frame; 401. connecting seat; 402. slide groove; 5. limit unit; 501. first push rod; 502. second push rod; 503. limit plate; 504. guide rail; 505. first rotating seat; 506. second rotating seat; 507. limit seat; 508. connecting block; 6. extrusion unit; 601. cylinder; 602. connecting plate; 603. guide rod; 604. spring; 7. contact unit; 701. gear; 702. rack; 703. rotating frame; 704. sliding rod; 8. connecting frame; 801. grinding wheel; 802. slide rail. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The embodiment of the present application provides a fiberboard polishing and grinding device and a method for using the same, which solves the problem that the fiberboard is in contact with the grinding wheel 801 for grinding, and the contact force between the grinding wheel 801 and the fiberboard cannot be controlled, resulting in an inability to achieve an appropriate grinding effect. At the same time, when grinding, the fiberboard is not limited, and it shakes left and right during the grinding process, resulting in deviations in the grinding degrees of different areas, further affecting the grinding effect. In addition, only one grinding wheel 801 is used for grinding, and the coarse grinding wheel 801 has a poor grinding effect. , the fine grinding wheel 801 has a better grinding effect, but its grinding speed is slow. The connection block 508 is driven to move under the movement of the transmission frame 4, and the first push rod 501 and the second push rod 502 are pushed to rotate, so that the limit plates 503 on both sides of the support frame 2 move toward each other until the limit plates 503 contact and squeeze the two sides of the fiberboard, and push the fiberboard to the center position. Under the action of the limit plates 503, the fiberboard is limited to avoid it from being offset during polishing and grinding, resulting in different polishing and grinding effects in different areas; When the cylinder 601 drives the connecting plate 602 to move, the connecting plate 602 is pushed to slide along the outer peripheral wall of the guide rod 603, compressing the spring 604. Under the rebound of the spring 604, the connecting seat 401 and the transmission frame 4 are pushed downward. The thrust acts on the connecting frame 8 and the grinding wheel 801, thereby limiting the extrusion force between the grinding wheel 801 and the fiberboard. By adjusting the compression degree of the guide rod 603, the grinding effect can be better adjusted. When the fiberboard contacts the grinding wheel 801, the connecting frame 8 is pushed to move, so that the rack 702 on the connecting frame 8 moves accordingly. At this time, the rack 702 drives the gear 701 to rotate, thereby driving the other rack 702 to drive the corresponding connecting frame 8 to move downward. At this time, there is a height difference between the two connecting frames 8, which makes it convenient for the two grinding wheels 801 to contact the fiberboard. Rough grinding is performed by the front grinding wheel 801, and fine grinding is performed by the rear grinding wheel 801, thereby ensuring the grinding effect and efficiency.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The embodiment of the invention discloses a fiberboard polishing and grinding device and a use method thereof.

[0025] According to the attached Figure 1-8 As shown, it includes a sanding machine 1 and a support frame 2. The sanding machine 1 is an existing mature technology, and its model is GYSG, which is not elaborated in the present invention; The support frame 2 is installed in the sanding machine 1, and a rotating door 3 is installed on both sides of the sanding machine 1. The sanding machine 1 is provided with a transmission frame 4, a limit unit 5, an extrusion unit 6, a contact unit 7 and a connecting frame 8. The transmission frame 4 is slidably connected to the sanding machine 1, and the connecting frame 8 is slidably connected to the inner wall of the transmission frame 4. The transmission frame 4 and the connecting frame 8 are located above the support frame 2, the limit unit 5 is located on both sides of the support frame 2, the extrusion unit 6 is located in the transmission frame 4, and the contact unit 7 is located between the connecting frames 8. The limiting unit 5 includes a plurality of first push rods 501 respectively connected to both sides of the transmission frame 4, the other end of the first push rod 501 is rotatably connected to the second push rod 502, and the other ends of the two corresponding second push rods 502 are rotatably connected to the limiting plates 503. The two limiting plates 503 are located on both sides of the support frame 2. The movement of the transmission frame 4 drives the connecting block 508 to move, and pushes the first push rod 501 and the second push rod 502 to rotate, so that the limiting plates 503 on both sides of the support frame 2 move toward each other until the limiting plates 503 contact and squeeze the two sides of the fiberboard, and push the fiberboard to the center position. Under the action of the limiting plates 503, the fiberboard is limited to avoid it from being offset during polishing and grinding, resulting in different polishing and grinding effects in different areas. The extrusion unit 6 includes a cylinder 601 fixedly mounted on the top end surface of the sanding machine 1, and the output end of the cylinder 601 is connected to a connecting plate 602, and the connecting plate 602 is slidably connected to the transmission frame 4. When the cylinder 601 drives the connecting plate 602 to move, the connecting plate 602 is pushed to slide along the outer peripheral wall of the guide rod 603, and the spring 604 is compressed. Under the rebound of the spring 604, the connecting seat 401 and the transmission frame 4 are pushed downward, and the thrust acts on the connecting frame 8 and the grinding wheel 801, thereby limiting the extrusion force between the grinding wheel 801 and the fiberboard. By adjusting the compression degree of the guide rod 603, the grinding effect can be better adjusted; The contact unit 7 includes a rack 702 fixedly connected to the connecting frame 8, and a gear 701 is meshed between the racks 702. When the fiberboard contacts the grinding wheel 801, the connecting frame 8 is pushed to move, so that the rack 702 on the connecting frame 8 moves accordingly. At this time, the rack 702 drives the gear 701 to rotate, thereby driving the other rack 702 to drive the corresponding connecting frame 8 to move downward. At this time, there is a height difference between the two connecting frames 8, which facilitates the two grinding wheels 801 to contact the fiberboard, and rough grinding is performed by the front grinding wheel 801, and fine grinding is performed by the rear grinding wheel 801, thereby ensuring the grinding effect and efficiency.

[0026] The internal transmission of the support frame 2 is connected with a transmission belt 201, and the output end of the transmission belt 201 is connected to the driving motor. When the fiberboard is polished, the fiberboard is placed on the support frame 2, and the fiberboard fits the transmission belt 201. The transmission belt 201 is driven by the driving mechanism to drive, so that the fiberboard moves; A grinding wheel 801 is arranged directly above the transmission belt 201, and the grinding wheel 801 is rotatably connected to the inner wall of the connecting frame 8. A driving mechanism is installed on the connecting frame 8, and the driving mechanism is connected to the grinding wheel 801 in transmission. After the fiberboard is polished by the grinding wheel 801 on the front connecting frame 8, the grinding wheel 801 on the connecting frame 8 performs rough polishing. When the transmission belt 201 drives the fiberboard to continue to move, the fiberboard contacts the grinding wheel 801 on the rear connecting frame 8, and is finely polished by the rear grinding wheel 801, thereby ensuring the polishing effect and efficiency.

[0027] Both sides of the connecting frame 8 are fixedly connected with connecting blocks 508, and the connecting blocks 508 are rotatably connected to the first push rod 501. The first push rod 501 is rotatably connected to the first rotating seat 505 on the side away from the connecting block 508. The bottom end surface of the first rotating seat 505 is fixedly connected to the second rotating seat 506. The inner wall of the second rotating seat 506 is rotatably connected to the second push rod 502. The second rotating seat 506 and the first rotating seat 505 are used to connect the first push rod 501 and the second push rod 502, and drive the connecting frame 4 to move. The connecting block 508 moves, and the first push rod 501 is pushed to rotate through the connecting block 508. At this time, the first push rod 501 pushes the second push rod 502 to rotate. Under the rotation of the second push rod 502, the limit plates 503 on both sides of the support frame 2 move toward each other until the limit plates 503 contact and squeeze the two sides of the fiberboard, pushing the fiberboard to the center position. Under the action of the limit plates 503, the fiberboard is limited to avoid it from being offset during polishing, resulting in different polishing effects in different areas.

[0028] The bottom end face of the second rotating seat 506 is fixedly connected to the limiting seat 507, and the outer peripheral wall of the limiting seat 507 is slidably connected to the guide rail 504, and the guide rail 504 is fixedly connected to the sanding machine 1. Under the movement of the transmission frame 4, the connecting block 508 is driven to move, and the first push rod 501 is pushed to rotate through the connecting block 508. At this time, the first push rod 501 pushes the first rotating seat 505 and the second rotating seat 506 to move, and the limiting seat 507 fixedly connected to the bottom of the second rotating seat 506 slides on the inner wall of the guide rail 504, so that the rotation path of the first push rod 501 and the second push rod 502 is limited.

[0029] A slide rail 802 is fixedly connected to the outer wall of the connecting frame 8 , and the slide rail 802 is slidably connected to the slide groove 402 provided on the transmission frame 4 . Under the action of the slide rail 802 , the sliding of the connecting frame 8 in the transmission frame 4 is relatively stable.

[0030] A connecting seat 401 is fixedly connected to the inner wall of the transmission frame 4, and the connecting seat 401 is slidably connected to the connecting plate 602. A guide rod 603 is fixedly connected to the inner wall of the connecting seat 401, and the guide rod 603 is slidably connected to the connecting plate 602, and the guide rod 603 is in contact with the upper end of the connecting plate 602; The cylinder 601 is started to drive the connecting plate 602 to move downward. At this time, the connecting plate 602 moves under the action of gravity, causing the guide rod 603 to move downward, so that the connecting seat 401 and the transmission frame 4 move downward in the sanding machine 1. When the cylinder 601 continues to drive the transmission frame 4 to move downward, the grinding wheel 801 in the front contacts and squeezes the fiberboard, pushing the connecting frame 8 to drive the slide rail 802 to slide along the inner wall of the transmission frame 4. When the slide rail 802 contacts the top of the transmission frame 4, the connecting frame 8 and the grinding wheel 801 cannot move.

[0031] The outer wall of the guide rod 603 is sleeved with a spring 604, and the upper and lower ends of the spring 604 are fixedly connected to the connecting plate 602 and the connecting seat 401 respectively. When the cylinder 601 drives the connecting plate 602 to continue to move, the transmission frame 4 cannot move, and the connecting plate 602 is pushed to slide along the outer wall of the guide rod 603 to compress the spring 604. Under the rebound of the spring 604, the connecting seat 401 and the transmission frame 4 are pushed downward, and the thrust acts on the connecting frame 8 and the grinding wheel 801, thereby limiting the extrusion force between the grinding wheel 801 and the fiberboard. By adjusting the compression degree of the guide rod 603, the grinding effect can be better adjusted.

[0032] A sliding rod 704 is slidably connected to the inner wall of the transmission frame 4, the upper end of the sliding rod 704 is in contact with the transmission frame 4, the lower end of the sliding rod 704 is fixedly connected to a rotating frame 703, and the rotating frame 703 is rotatably connected to the gear 701. When the connecting frame 8 drives the slide rail 802 to slide along the inner wall of the transmission frame 4, the sliding rod 704 slides along the inner wall of the transmission frame 4, so that the positions of the rotating frame 703 and the gear 701 are limited.

[0033] Working principle: When polishing and grinding the fiberboard, the fiberboard is placed on the support frame 2, and the fiberboard fits the transmission belt 201, and the transmission belt 201 is driven by the driving mechanism to move the fiberboard; At the same time, the cylinder 601 is started to drive the connecting plate 602 to move downward. At this time, the connecting plate 602 moves under the action of gravity, so that the guide rod 603 moves downward, so that the connecting seat 401 and the transmission frame 4 move downward in the sanding machine 1, and the movement of the transmission frame 4 drives the connecting block 508 to move; The first push rod 501 is pushed to rotate by the connecting block 508. At this time, the first push rod 501 pushes the first rotating seat 505 and the second rotating seat 506 to move. The limiting seat 507 fixedly connected to the bottom of the second rotating seat 506 slides on the inner wall of the guide rail 504, so that the rotation paths of the first push rod 501 and the second push rod 502 are limited. At this time, the first push rod 501 pushes the second push rod 502 to rotate. Under the rotation of the second push rod 502, the limit plates 503 on both sides of the support frame 2 move toward each other until the limit plates 503 contact and squeeze the two sides of the fiberboard, pushing the fiberboard to the center position. Under the action of the limit plates 503, the fiberboard is limited to avoid deviation during polishing and grinding, resulting in different polishing and grinding effects in different areas. When the cylinder 601 continues to drive the transmission frame 4 to move downward, the grinding wheel 801 in the front contacts and squeezes the fiberboard, pushing the connecting frame 8 to drive the slide rail 802 to slide along the inner wall of the transmission frame 4. When the slide rail 802 contacts the top of the transmission frame 4, the connecting frame 8 and the grinding wheel 801 cannot move. When the cylinder 601 drives the connecting plate 602 to continue to move, the transmission frame 4 cannot move at this time, and the connecting plate 602 is pushed to slide along the outer peripheral wall of the guide rod 603, compressing the spring 604. Under the rebound of the spring 604, the connecting seat 401 and the transmission frame 4 are pushed downward. The thrust acts on the connecting frame 8 and the grinding wheel 801, thereby limiting the extrusion force between the grinding wheel 801 and the fiberboard. By adjusting the compression degree of the guide rod 603, the grinding effect can be better adjusted. After the fiberboard is polished by the polishing wheel 801 on the front connecting frame 8, the polishing wheel 801 on the connecting frame 8 performs rough polishing, and when the transmission belt 201 drives the fiberboard to continue to move, the fiberboard contacts the polishing wheel 801 on the rear connecting frame 8; As the fiberboard is roughly sanded, the height changes. When the fiberboard contacts the sanding wheel 801, the connecting frame 8 is pushed to move, causing the rack 702 on the connecting frame 8 to move accordingly. At this time, the rack 702 drives the gear 701 to rotate, thereby driving the other rack 702 to drive the corresponding connecting frame 8 to move downward. At this time, there is a height difference between the two connecting frames 8, which makes it convenient for the two sanding wheels 801 to contact the fiberboard. Rough sanding is performed by the front sanding wheel 801, and fine sanding is performed by the rear sanding wheel 801, thereby ensuring the sanding effect and efficiency.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fiberboard polishing and grinding device, comprising a sanding machine (1) and a support frame (2), characterized in that: The support frame (2) is installed in the sanding machine (1), and rotating doors (3) are installed on both sides of the sanding machine (1). The sanding machine (1) is provided with a transmission frame (4), a limit unit (5), an extrusion unit (6), a contact unit (7) and a connecting frame (8). The transmission frame (4) is slidably connected to the sanding machine (1), and the connecting frame (8) is slidably connected to the inner wall of the transmission frame (4). The transmission frame (4) and the connecting frame (8) are located above the support frame (2), the limit unit (5) is located on both sides of the support frame (2), the extrusion unit (6) is located in the transmission frame (4), and the contact unit (7) is located between the connecting frames (8). The limiting unit (5) comprises a plurality of first push rods (501) respectively rotatably connected to both sides of the transmission frame (4); the other end of the first push rod (501) is rotatably connected to the second push rod (502); the other ends of two corresponding second push rods (502) are rotatably connected to the limiting plates (503); the two limiting plates (503) are located on both sides of the support frame (2); The extrusion unit (6) comprises a cylinder (601) fixedly mounted on the top end surface of the sanding machine (1), the output end of the cylinder (601) being connected to a connecting plate (602), and the connecting plate (602) being slidably connected to the transmission frame (4); The contact unit (7) comprises a rack (702) fixedly connected to the connecting frame (8), and a gear (701) is meshed between the racks (702).

2. A fiberboard polishing and grinding device according to claim 1, characterized in that: The support frame (2) is internally driven and connected to a transmission belt (201); the output end of the transmission belt (201) is connected to a drive motor; a grinding wheel (801) is arranged directly above the transmission belt (201); the grinding wheel (801) is rotatably connected to the inner wall of the connecting frame (8); a driving mechanism is mounted on the connecting frame (8); the driving mechanism is in driving connection with the grinding wheel (801).

3. A fiberboard polishing and grinding device according to claim 2, characterized in that: Both sides of the connecting frame (8) are fixedly connected with connecting blocks (508), and the connecting blocks (508) are rotatably connected to the first push rod (501). The first push rod (501) is rotatably connected to a first rotating seat (505) on a side away from the connecting block (508). The bottom end surface of the first rotating seat (505) is fixedly connected to a second rotating seat (506), and the inner wall of the second rotating seat (506) is rotatably connected to the second push rod (502). The second rotating seat (506) and the first rotating seat (505) are used to connect the first push rod (501) and the second push rod (502).

4. A fiberboard polishing and grinding device according to claim 3, characterized in that: The bottom end surface of the second rotating seat (506) is fixedly connected to a limit seat (507), the outer peripheral wall of the limit seat (507) is slidably connected to a guide rail (504), and the guide rail (504) is fixedly connected to the sanding machine (1).

5. A fiberboard polishing and grinding device according to claim 4, characterized in that: A slide rail (802) is fixedly connected to the outer wall of the connecting frame (8), and the slide rail (802) is slidably connected to a slide groove (402) provided on the transmission frame (4).

6. A fiberboard polishing and grinding device according to claim 5, characterized in that: A connecting seat (401) is fixedly connected to the inner wall of the transmission frame (4), the connecting seat (401) is slidably connected to the connecting plate (602), a guide rod (603) is fixedly connected to the inner wall of the connecting seat (401), the guide rod (603) is slidably connected to the connecting plate (602), and the guide rod (603) is in contact with the upper end of the connecting plate (602).

7. A fiberboard polishing and grinding device according to claim 6, characterized in that: A spring (604) is sleeved on the outer peripheral wall of the guide rod (603), and the upper and lower ends of the spring (604) are fixedly connected to the connecting plate (602) and the connecting seat (401) respectively.

8. A fiberboard polishing and grinding device according to claim 7, characterized in that: A sliding rod (704) is slidably connected to the inner wall of the transmission frame (4); the upper end of the sliding rod (704) is in contact with the transmission frame (4); the lower end of the sliding rod (704) is fixedly connected to a rotating frame (703); and the rotating frame (703) is rotatably connected to the gear (701).

9. A method for using a fiberboard polishing and grinding device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: placing a fiberboard on a support frame (2), driving the fiberboard to move via a transmission belt (201), starting the cylinder (601) to drive the connecting plate (602) to move downward, causing the connecting seat (401) and the transmission frame (4) to move downward in the sanding machine (1), driving the connecting block (508) to move, and driving the first push rod (501) to rotate; S2: the first push rod (501) pushes the second push rod (502) to rotate, and the limiting plates (503) on both sides of the support frame (2) move towards each other until the limiting plates (503) contact and squeeze the two sides of the fiberboard, pushing the fiberboard to the center position, and under the action of the limiting plates (503), the fiberboard is limited; S3: When the cylinder (601) continues to drive the transmission frame (4) to move downward, the grinding wheel (801) in the front contacts and squeezes the fiberboard, pushing the connecting frame (8) to drive the slide rail (802) to slide along the inner wall of the transmission frame (4). When the slide rail (802) contacts the top of the transmission frame (4), the connecting frame (8) and the grinding wheel (801) cannot move. S4: the cylinder (601) drives the connecting plate (602) to continue to move. At this time, the transmission frame (4) cannot move, and the connecting plate (602) is pushed to slide along the outer peripheral wall of the guide rod (603), compressing the spring (604). Under the rebound of the spring (604), the connecting seat (401) and the transmission frame (4) are pushed downward. The thrust acts on the connecting frame (8) and the grinding wheel (801), thereby limiting the extrusion force between the grinding wheel (801) and the fiberboard; S5: After the fiberboard is polished by the polishing wheel (801) on the front connecting frame (8), the polishing wheel (801) on the connecting frame (8) performs rough polishing. As the fiberboard is roughly polished, the height changes. When the fiberboard contacts the polishing wheel (801), the connecting frame (8) is pushed to move. At this time, the rack (702) drives the gear (701) to rotate, thereby driving another rack (702) to drive the corresponding connecting frame (8) to move downward. Both polishing wheels (801) contact the fiberboard, and fine polishing is performed by the rear polishing wheel (801), thereby ensuring the polishing effect and efficiency.

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