Floating flat scraping knife

Abstract

The utility model belongs to the technical field of edge bonding machines, and discloses a floating flat edge scraping knife which comprises a U-shaped seat and an air cylinder assembly, an edge scraping knife head assembly is arranged at the lower end of the air cylinder assembly, a leveling assembly is arranged between the U-shaped seat and the air cylinder assembly, a cylinder body is arranged on the inner side of the U-shaped seat, and the leveling assembly comprises a pressing plate, a first adjusting bolt and a spring. The pressing plate is fixedly installed at the upper end of the U-shaped seat through screws, the spring is arranged on the inner side of the U-shaped seat, the upper end of the cylinder body is fixedly connected with a connecting seat, the upper end of the spring abuts against the bottom of the connecting seat, the bottom of the spring is pressed on the bottom of the inner side of the U-shaped seat, and one end of the first adjusting bolt rotationally penetrates through the pressing plate in a threaded mode and then abuts against the connecting seat. Through the arrangement of the leveling assembly, the plate scraping device automatically adapts to plates with uneven surfaces, and uneven scraping or damage to the plates is avoided.

Description

Technical Field

[0001] This utility model relates to the field of edge banding machine technology, and in particular to a floating flat scraper. Background Technology

[0002] Currently, during the edge banding process of boards, a lot of glue overflow and rough edges are generated around the edges of the boards, which does not meet the aesthetic requirements of the product. Therefore, an edge trimming tool is needed to trim the glue rough edges around the edges of the boards according to the requirements.

[0003] Chinese utility model patent CN221232760U discloses a floating scraping device, including: a connecting rod, an assembly, a swinging blade holder, and a blade; the connecting rod is arranged vertically; the assembly is fixedly installed at the lower end of the connecting rod; the swinging blade holder is installed on the assembly and can swing; the blade is detachably installed on the swinging blade holder and can swing with the swinging blade holder.

[0004] The aforementioned device is adaptable to scraping edges on materials of varying thicknesses. However, in practical use, it still has some shortcomings. For example, when the surface of the material to be scraped is not level, the scraper does not have an automatic leveling function, which can lead to the following problems:

[0005] Decreased scraping precision:

[0006] The contact angle and pressure between the scraper and the board surface will change due to the unevenness of the board surface, resulting in uneven scraping depth, and local over-scraping (damaging the board) or under-scraping (overflowing glue, film residue), which affects product consistency.

[0007] Increased equipment wear and tear:

[0008] If there are protrusions on the surface of the sheet, the scraper may vibrate violently or jam due to hard contact, which will accelerate the wear of components such as blades, springs, and cylinders, and may even cause the mechanical structure to loosen (such as the failure of the slider limit or the loosening of screws), thus shortening the service life of the equipment.

[0009] Increased costs of human intervention:

[0010] Operators need to frequently stop the machine to adjust the height or angle of the scraper to adapt to the uneven surface of the board, which reduces processing efficiency.

[0011] Therefore, we propose a floating flat scraper. Utility Model Content

[0012] The purpose of this invention is to provide a floating flat scraper blade, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0013] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0014] A floating flat scraper includes a U-shaped seat and a cylinder assembly, wherein a leveling component is provided between the U-shaped seat and the cylinder assembly;

[0015] The cylinder assembly includes a cylinder body and a piston rod. The upper end of the piston rod is slidably mounted inside the cylinder body. Both the upper and lower ends of the cylinder body are connected to vent ports. The piston body of the piston rod is located between the two vent ports. The cylinder body is disposed inside the U-shaped seat. The lower end of the cylinder body is hinged to the lower end of the U-shaped seat through a first connecting shaft. The upper end of the U-shaped seat has a waist hole. The cylinder body is connected to the U-shaped seat through a second connecting shaft, which is movably disposed within the waist hole.

[0016] The leveling assembly includes a pressure plate, a first adjusting bolt, and a spring. The pressure plate is fixedly installed on the upper end of the U-shaped seat by screws. The spring is located on the inner side of the U-shaped seat. A connecting seat is fixedly connected to the upper end of the cylinder. The upper end of the spring abuts against the bottom of the connecting seat, and the bottom of the spring presses against the bottom of the inner side of the U-shaped seat. One end of the first adjusting bolt is threaded through the pressure plate and abuts against the connecting seat.

[0017] The lower end of the piston rod is provided with a scraping head assembly.

[0018] According to this utility model, in a floating flat scraper, the upper end of the piston body of the piston rod is fixedly connected to a shaft. The upper end of the shaft slides through the cylinder and the connecting seat in sequence and is slidably fitted with a limiting slider. The limiting slider is installed on the inner side of the U-shaped seat. The outer wall of the limiting slider is in sliding limiting contact with the inner wall of the U-shaped seat. The upper end of the limiting slider near the connecting seat can abut against the side of the pressure plate. A second adjusting bolt for fixing the limiting slider on the shaft is threaded on the limiting slider.

[0019] In a floating flat scraper according to the present invention, the upper end of the shaft is provided with an external thread, and a limit nut is installed on the upper end of the shaft thread, with a gap between the limit nut and the limit slider.

[0020] In a floating flat scraper according to the present invention, the gap is 1mm.

[0021] According to the present invention, a floating flat scraper blade is provided, wherein the scraper blade head assembly includes a first locking block and a guide foot. The first locking block is adjustablely mounted on the lower end of the piston rod. A connecting rod is fixedly connected to the bottom of the first locking block. A second locking block is adjustablely mounted on the lower end of the connecting rod. A connecting block is fixedly connected to the bottom of the second locking block. One end of the connecting block has a hinge hole, which is hinged to the guide foot via a first pin. The other end of the connecting block has an arc-shaped limiting groove. A second pin is movably disposed inside the arc-shaped limiting groove. The end of the second pin is fixedly connected to the guide foot. A third spring is provided between the guide foot and the connecting block. The upper end of the third spring abuts against the bottom of the connecting block, and the bottom of the third spring presses against the upper surface of the guide foot. A blade is mounted on the side of the guide foot via mounting bolts.

[0022] According to the present invention, a floating flat scraper blade further includes a wire blowing assembly, which includes a ball seat and a wire blowing tube. The upper end of the ball seat is connected to an air inlet, and a ball head is rotatably installed inside the ball seat. The upper end of the wire blowing tube is fixedly inserted through the ball head and connected to the air inlet.

[0023] In a floating flat scraper according to the present invention, a connecting piece is fixedly welded to one side of the ball seat, and the connecting piece is fixed to one side of the U-shaped seat.

[0024] In a floating flat scraper according to the present invention, mounting plates are formed on both sides of the U-shaped seat, and mounting holes are provided on the mounting plates.

[0025] This utility model has at least the following beneficial effects:

[0026] The lower end of the cylinder is hinged to the U-shaped seat via the first connecting shaft, and the upper end of the second connecting shaft slides in the waist hole. With the help of spring buffer and the first adjusting bolt to adjust the preload, the cutter head can swing around the first connecting shaft at a small angle, automatically adapting to the uneven surface of the plate and avoiding uneven scraping or damage to the plate.

[0027] The second spring inside the cylinder provides preload to the piston rod. When the spring metal is fatigued, compressed air can be introduced through the upper and lower vent ports to compensate for the spring force. When air is introduced through the lower vent port, the piston rod can be driven to lift the cutter head assembly, thus achieving flexible switching of working states.

[0028] The limiting slider on the shaft is locked in position by the second adjusting bolt. When the limiting slider abuts against the pressure plate, it limits the maximum swing angle of the cylinder to avoid excessive tilting of the cutter head, which could lead to uneven scraping or damage to the plate. The limiting nut prevents the shaft from separating from the limiting slider.

[0029] In the edge scraping head assembly, the guide pressure foot is hinged to the connecting block through the first pin, and the second pin slides in the arc-shaped limiting groove. With the elastic pressure of the third spring, it can adapt to the multi-angle changes of the edge of the plate with different thicknesses and ensure that the blade fits tightly.

[0030] The ball head of the blowing assembly can rotate 360° within the ball seat. By manually adjusting the angle of the blowing tube to align with the scraping area, the connecting plate fixes the ball seat to the U-shaped seat, ensuring stable airflow direction and effectively removing impurities such as adhesive threads and film debris. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0032] Figure 1 This is a schematic diagram of the structure of this utility model;

[0033] Figure 2 This is a partial cross-sectional structural diagram of the present invention;

[0034] Figure 3 This is a schematic diagram of the scraping blade assembly of this utility model;

[0035] Figure 4 This is a partial cross-sectional view of the scraping blade head of this utility model;

[0036] Figure 5 This is a schematic diagram of the structure of the wire blowing assembly of this utility model.

[0037] Explanation of icon numbers:

[0038] 1. U-shaped seat; 101. Mounting plate; 102. Mounting hole; 103. Pressure plate; 104. First adjusting bolt; 105. Waist hole; 106. First connecting shaft; 107. Second connecting shaft; 108. Spring;

[0039] 2. Cylinder assembly; 201. Cylinder block; 202. Piston rod; 203. Connecting seat; 204. Air inlet;

[0040] 3. Shaft; 301. Limit nut; 302. Limit slider; 303. Second adjusting bolt;

[0041] 4. Edge scraping cutter head assembly; 401. First locking block; 4011. Abutting bolt; 402. Connecting rod; 403. Second locking block; 404. Connecting block; 4041. Arc-shaped limiting groove; 4042. Hinge hole; 405. Guide foot; 4051. Threaded hole; 406. Blade; 407. Third spring; 408. First pin; 409. Second pin; 410. Measuring screw;

[0042] 5. Wire blowing assembly; 501. Connecting piece; 502. Ball seat; 503. Ball head; 504. Wire blowing tube; 505. Air inlet. Detailed Implementation

[0043] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0044] Please refer to Figures 1 to 5 As shown in the embodiments of this utility model,

[0045] A floating flat scraper includes a U-shaped seat 1 and a cylinder assembly 2, with a leveling component provided between the U-shaped seat 1 and the cylinder assembly 2;

[0046] The cylinder assembly 2 includes a cylinder body 201 and a piston rod 202. The upper end of the piston rod 202 is slidably installed inside the cylinder body 201. Both the upper and lower ends of the cylinder body 201 are connected to air inlets 204. The piston body of the piston rod 202 is located between the two air inlets 204. The cylinder body 201 is located inside the U-shaped seat 1. The lower end of the cylinder body 201 is hinged to the lower end of the U-shaped seat 1 through a first connecting shaft 106. The upper end of the U-shaped seat 1 has a waist hole 105. The cylinder body 201 is connected to the U-shaped seat 1 through a second connecting shaft 107. The second connecting shaft 107 is movably installed in the waist hole 105.

[0047] The leveling assembly includes a pressure plate 103, a first adjusting bolt 104, and a spring 108. The pressure plate 103 is fixedly installed on the upper end of the U-shaped seat 1 by screws. The spring 108 is located on the inner side of the U-shaped seat 1. A connecting seat 203 is fixedly connected to the upper end of the cylinder body 201. The upper end of the spring 108 abuts against the bottom of the connecting seat 203, and the bottom of the spring 108 presses against the bottom of the inner side of the U-shaped seat 1. One end of the first adjusting bolt 104 is threaded and rotates through the pressure plate 103 and then abuts against the connecting seat 203.

[0048] The lower end of the piston rod 202 is provided with a scraping head assembly 4.

[0049] By adopting the above technical solution, when the surface of the board is uneven, the scraping blade assembly 4 generates a lateral force when it contacts the edge of the board. This force is transmitted to the cylinder 201 through the piston rod 202. The lower end of the cylinder 201 is hinged through the first connecting shaft 106, and the upper end of the second connecting shaft 107 slides within the waist hole 105, allowing the cylinder 201 to swing around the first connecting shaft 106 at a small angle. At the same time, the spring 108 provides cushioning through the connecting seat 203, and the first adjusting bolt 104 can adjust the spring preload, realizing the blade's adaptive leveling function on the board surface.

[0050] Compressed air can be introduced through the upper and lower vent ports 204. When air is introduced through the upper port, it pushes the piston rod 202 to drive the scraping head assembly 4 downward. When the scraping head assembly 4 is not in use, air is introduced through the lower vent port 204, causing the piston rod 202 to drive the scraping head assembly 4 upward, and it does not participate in the scraping operation.

[0051] In this embodiment, the upper end of the piston body of the piston rod 202 is fixedly connected to the shaft 3. The upper end of the shaft 3 slides through the cylinder body 201 and the connecting seat 203 in sequence. A limiting slider 302 is slidably sleeved on the shaft 3. The limiting slider 302 is installed on the inner side of the U-shaped seat 1. The outer wall of the limiting slider 302 slides and limits contact with the inner wall of the U-shaped seat 1. The upper end of the limiting slider 302 near the connecting seat 203 can abut against the side of the pressure plate 103. A second adjusting bolt 303 for fixing the limiting slider 302 to the shaft 3 is threaded on the limiting slider 302.

[0052] When the piston rod 202 swings with the cylinder 201, the shaft 3 moves synchronously and drives the limiting slider 302 to slide along the shaft 3. The position of the limiting slider 302 is locked by the second adjusting bolt 303. When the upper end of the limiting slider 302 abuts against the side of the pressure plate 103, the maximum swing angle of the cylinder 201 is limited, so as to avoid excessive tilting of the cutter head, which may cause uneven scraping or damage to the plate.

[0053] The adjustable limit slider 302 can slide freely along the shaft 3, thereby enabling flexible control of the lowest height position of the scraping head assembly 4 at the bottom of the piston rod 202. After the limit slider 302 is adjusted to the target position, it is fastened to the shaft 3 using the second adjusting bolt 303. This operation effectively prevents the shaft 3 from rotating relative to the limit slider 302 during operation.

[0054] Meanwhile, the outer wall of the limiting slider 302 and the inner wall of the U-shaped seat 1 form a sliding limiting engagement. This design restricts the rotational freedom of the limiting slider 302 within the U-shaped seat 1 in a spatial dimension, thereby eliminating the possibility of rotation of the shaft 3. Since the shaft 3 and the piston rod 202 are fixedly connected, the rotational restriction characteristic of the shaft 3 is transmitted to the piston rod 202, preventing the piston rod 202 and the connected scraping head assembly 4 from rotating. In this way, the accuracy of the height adjustment of the scraping head assembly 4 is ensured, and the multiple limiting structures ensure that it maintains a stable posture during operation.

[0055] In this embodiment, the upper end of the shaft 3 is provided with an external thread, and a limiting nut 301 is installed on the upper thread of the shaft 3. A gap is left between the limiting nut 301 and the limiting slider 302. In this embodiment, the gap is set to 1mm. The limiting nut 301 prevents the shaft 3 from moving downward due to the second adjusting bolt 303 not being fully tightened, which would cause the limiting slider 302 to separate from the shaft 3, thus preventing the scraping blade assembly 4 from moving down too far and causing a collision.

[0056] In this embodiment, the scraping head assembly 4 includes a first locking block 401 and a guide foot 405. The first locking block 401 is tunably mounted on the lower end of the piston rod 202. A connecting rod 402 is fixedly connected to the bottom of the first locking block 401. A second locking block 403 is tunably mounted on the lower end of the connecting rod 402. A connecting block 404 is fixedly connected to the bottom of the second locking block 403. A hinge hole 4042 is provided at one end of the connecting block 404. The hinge hole 4042 is connected to the guide foot 405 via a first pin 408. 5. The connecting block 404 has an arc-shaped limiting groove 4041 at the other end. A second pin 409 is movably arranged inside the arc-shaped limiting groove 4041. The end of the second pin 409 is fixedly connected to the guide foot 405. A third spring 407 is arranged between the guide foot 405 and the connecting block 404. The upper end of the third spring 407 abuts against the bottom of the connecting block 404, and the bottom of the third spring 407 presses against the upper surface of the guide foot 405. A blade 406 is installed on the side of the guide foot 405 by mounting bolts.

[0057] By adopting the above technical solution, the guide foot 405 is hinged to the connecting block 404 via the first pin 408 and slides within the arc-shaped limiting groove 4041 via the second pin 409, achieving multi-angle adaptive adjustment of the blade 406. The third spring 407 provides downward elastic pressure to ensure that the blade 406 fits tightly against the edge of the sheet material. When encountering uneven edges on the sheet material, the guide foot 405 can swing around the first pin 408 to adapt to sheets of different thicknesses, while the arc-shaped limiting groove 4041 limits its maximum swing angle (determined by the curvature of the groove).

[0058] By loosening the first locking block 401 and the second locking block 403, the position of the blade 406 can be adjusted, thereby allowing the use of plates of different widths.

[0059] Furthermore, in this embodiment, a locking bolt 4011 for pressing the lower end of the piston rod 202 against the insertion hole of the first locking block 401 is threadedly installed on the first locking block 401. By setting the locking bolt 4011, the first locking block 401 can be effectively prevented from disengaging from the piston rod 202 when the bolt on the first locking block 401 is accidentally loosened.

[0060] Furthermore, in this embodiment, the bottom of the guide foot 405 is provided with a threaded hole 4051, and a grommet screw 410 is installed in the internal thread of the threaded hole 4051. The bottom of the third spring 407 extends into the threaded hole 4051 and presses against the top of the grommet screw 410.

[0061] With this setup, when the third spring 407 needs to be replaced, simply remove the nut screw 410 from the threaded hole 4051, then pull the damaged third spring 407 out of the threaded hole 4051, then insert the new third spring 407 into the threaded hole 4051, and finally reinstall the nut screw 410 into the threaded hole 4051.

[0062] In this embodiment, a blowing assembly 5 is also included. The blowing assembly 5 includes a ball seat 502 and a blowing tube 504. The upper end of the ball seat 502 is connected to an air inlet 505. A ball head 503 is rotatably installed inside the ball seat 502. The upper end of the blowing tube 504 is fixedly connected to the air inlet 505 after passing through the ball head 503.

[0063] Compressed air enters the ball seat 502 through the air inlet 505, and is ejected from the blow tube 504 through the channel inside the ball head 503, blowing towards the scraping area. The ball head 503 can rotate 360° within the ball seat 502. By manually adjusting the angle of the blow tube 504, it can be precisely aligned with the scraping position of the blade 406 to remove impurities such as glue threads and film chips generated during scraping. The adjustable airflow direction adapts to different board shapes and scraping paths, improving cleaning efficiency.

[0064] In this embodiment, a connecting piece 501 is fixedly welded to one side of the ball seat 502, and the connecting piece 501 is fixed to one side of the U-shaped seat 1.

[0065] The connecting piece 501 rigidly fixes the ball seat 502 to the U-shaped seat 1, ensuring that the relative position of the blower assembly 5 and the cutter head assembly 4 remains constant. This structural design ensures that the blower tube 504 is always aligned with the working area of ​​the blade 406, preventing the blower tube 504 from shifting due to equipment vibration or external processing forces, and guaranteeing the stability and reliability of air blowing cleaning.

[0066] In this embodiment, mounting plates 101 are formed on both sides of the U-shaped base 1, and mounting holes 102 are provided on the mounting plates 101.

[0067] The U-shaped seat 1 can be fixed to the processing equipment using bolts through the mounting holes 102 on the mounting plate 101.

[0068] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the present invention's conception through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A floating flat scraper, characterized in that, It includes a U-shaped seat (1) and a cylinder assembly (2), and a leveling component is provided between the U-shaped seat (1) and the cylinder assembly (2); The cylinder assembly (2) includes a cylinder body (201) and a piston rod (202). The upper end of the piston rod (202) is slidably installed inside the cylinder body (201). Both the upper and lower ends of the cylinder body (201) are connected to air inlets (204). The piston body of the piston rod (202) is located between the two air inlets (204). The cylinder body (201) is disposed inside the U-shaped seat (1). The lower end of the cylinder body (201) is hinged to the lower end of the U-shaped seat (1) through a first connecting shaft (106). The upper end of the U-shaped seat (1) is provided with a waist hole (105). The cylinder body (201) is connected to the U-shaped seat (1) through a second connecting shaft (107). The second connecting shaft (107) is movably disposed in the waist hole (105). The leveling assembly includes a pressure plate (103), a first adjusting bolt (104), and a spring (108). The pressure plate (103) is fixedly installed on the upper end of the U-shaped seat (1) by screws. The spring (108) is located on the inner side of the U-shaped seat (1). The upper end of the cylinder (201) is fixedly connected to a connecting seat (203). The upper end of the spring (108) abuts against the bottom of the connecting seat (203), and the bottom of the spring (108) presses against the inner bottom of the U-shaped seat (1). One end of the first adjusting bolt (104) is threaded through the pressure plate (103) and abuts against the connecting seat (203). The lower end of the piston rod (202) is provided with a scraping head assembly (4).

2. The floating flat scraper according to claim 1, characterized in that: The piston rod (202) has a fixed shaft (3) at the upper end of the piston body. The upper end of the shaft (3) slides through the cylinder (201) and the connecting seat (203) in sequence and is then slidably fitted with a limiting slider (302). The limiting slider (302) is installed on the inner side of the U-shaped seat (1). The outer wall of the limiting slider (302) slides and limits contact with the inner wall of the U-shaped seat (1). The upper end of the limiting slider (302) near the connecting seat (203) can abut against the side of the pressure plate (103). The limiting slider (302) is threaded with a second adjusting bolt (303) for fixing the limiting slider (302) on the shaft (3).

3. A floating flat scraper according to claim 2, characterized in that: The upper end of the shaft (3) is provided with an external thread, and a limit nut (301) is threaded on the upper end of the shaft (3). A gap is left between the limit nut (301) and the limit slider (302).

4. A floating flat scraper according to claim 3, characterized in that: The gap is 1 mm.

5. A floating flat scraper according to claim 1, characterized in that: The scraping blade assembly (4) includes a first locking block (401) and a guide foot (405). The first locking block (401) is tunably mounted on the lower end of the piston rod (202). A connecting rod (402) is fixedly connected to the bottom of the first locking block (401). A second locking block (403) is tunably mounted on the lower end of the connecting rod (402). A connecting block (404) is fixedly connected to the bottom of the second locking block (403). A hinge hole (4042) is provided at one end of the connecting block (404), and the hinge hole (4042) is hinged to the guide foot (405) through a first pin (408). The other end of the connecting block (404) is provided with an arc-shaped limiting groove (4041). A second pin (409) is movably arranged inside the arc-shaped limiting groove (4041). The end of the second pin (409) is fixedly connected to the guide foot (405). A third spring (407) is provided between the guide foot (405) and the connecting block (404). The upper end of the third spring (407) abuts against the bottom of the connecting block (404), and the bottom of the third spring (407) presses against the upper surface of the guide foot (405). A blade (406) is installed on the side of the guide foot (405) by mounting bolts.

6. A floating flat scraper according to claim 1, characterized in that: It also includes a blower assembly (5), which includes a ball seat (502) and a blower tube (504). The upper end of the ball seat (502) is connected to an air inlet (505). A ball head (503) is rotatably installed inside the ball seat (502). The upper end of the blower tube (504) is fixedly connected to the air inlet (505) after passing through the ball head (503).

7. A floating flat scraper according to claim 6, characterized in that: A connecting piece (501) is fixedly welded to one side of the ball seat (502), and the connecting piece (501) is fixed to one side of the U-shaped seat (1).

8. A floating flat scraper according to claim 1, characterized in that: The U-shaped base (1) has mounting plates (101) formed on both sides, and mounting holes (102) are provided on the mounting plates (101).

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