Scraping device of edge bonding machine

Abstract

The utility model discloses an edge scraping device of an edge banding machine, which comprises a vertical frame, a lower edge scraping component arranged on the vertical frame, a lower scraper arranged on the lower edge scraping component and a transverse positioning component arranged on the lower edge scraping component, the transverse positioning component comprises a transverse sliding block and a transverse positioning servo motor, and the transverse positioning servo motor drives the transverse sliding block to move transversely. The lower edge scraping assembly is provided with three transverse positioning wheels used for guiding the side face of the plate, the transverse positioning wheels are rotationally connected to the transverse sliding block, the rotating axis of each transverse positioning wheel extends in the vertical direction, the transverse positioning wheels are cylindrical wheels, and the three transverse positioning wheels are arranged in the longitudinal direction. And the transverse positioning wheel in the middle corresponds to the lower scraper. According to the edge scraping device, shimmy of the plate can be obviously relieved, and therefore the quality of plate products can be improved.

Description

Technical Field

[0001] This utility model relates to the field of edge banding machines, and specifically to an edge scraping device for an edge banding machine. Background Technology

[0002] Currently, edge banding machines are used for processes such as side edge banding, trimming, scraping, and sanding of boards. During this process, the boards are conveyed longitudinally via a conveyor chain assembly. To prevent relative movement between the boards and the chain blocks of the conveyor chain assembly, pressure rollers are used to press down on the upper side of the boards. The edge banding machine adheres plastic edge strips to the side of the wood boards. After trimming, the edge strips undergo a scraping process, which involves chamfering and scraping the upper and lower edges of the edge strips. To avoid excessive scraping depth, the boards need to be positioned. Currently, a conical turntable is used for lateral positioning of the board sides. For an example, refer to Chinese Utility Model Patent Publication No. CN209999368U. The "pneumatic edge trimming device for a woodworking edge banding machine" is equipped with a small guide wheel. The rotation axis of the conical turntable (equivalent to the aforementioned "small guide wheel") is inclined. When the board is tilted, the vertical corner edge of the board will first touch the conical turntable, causing the turntable to rotate. The vertical corner edge of the board is guided (or pushed) by the conical surface of the turntable, so that the side of the board eventually passes along the generatrix of the foremost position of the conical turntable. Since the generatrix of the foremost position of the conical turntable is in the vertical direction, the side of the board is positioned laterally. However, in reality, the conical turntable positions the side of the board by line contact (specifically, the conical turntable contacts the edge strip), so the positioning effect is not stable and reliable enough. This causes the board to frequently experience horizontal swaying during the scraping process, resulting in vibration marks at the aforementioned chamfer position, which is not conducive to improving the quality of the board product. Therefore, it is necessary to improve the existing edge trimming device. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an edge scraping device for an edge banding machine, which is beneficial to improving the quality of board products.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] The edge-scraping device of the edge-banding machine disclosed in this utility model includes a vertical frame, on which a lower edge-scraping assembly is provided. The lower edge-scraping assembly is provided with a lower scraper. The lower edge-scraping assembly is provided with a transverse positioning assembly, which includes a transverse slider and a transverse positioning servo motor. The transverse positioning servo motor drives the transverse slider to move laterally. The lower edge-scraping assembly is provided with a transverse positioning wheel for guiding the side of the plate. The transverse positioning wheel is rotatably connected to the transverse slider. The rotation axis of the transverse positioning wheel extends in the vertical direction. The transverse positioning wheel is a cylindrical wheel. The number of transverse positioning wheels is set to three. The three transverse positioning wheels are arranged longitudinally. The middle transverse positioning wheel corresponds to the lower scraper.

[0006] Preferably, the lower scraping edge assembly is provided with a vertical positioning disk and a vertical positioning servo motor, the horizontal positioning wheel located in the middle corresponds to the vertical positioning disk, and the vertical positioning servo motor drives the vertical positioning disk to move vertically.

[0007] Preferably, the axial width of the first and last two transverse positioning wheels is greater than the axial width of the middle transverse positioning wheel.

[0008] Preferably, a vertical boss is formed at one end of the horizontal slider, the vertical boss is located between the left and right horizontal positioning wheels, and a middle cantilever shaft is screwed onto the vertical boss, and the middle horizontal positioning wheel is mounted on the middle cantilever shaft.

[0009] Preferably, the support frame is provided with an upper scraping component, which is slidably arranged up and down. The upper scraping component is provided with an upper scraper. The top of the support frame is equipped with a scraping lifting servo motor, which drives the upper scraping component to move vertically.

[0010] Compared with the prior art, the advantages of this utility model are as follows: by setting the lower scraping component to have a transverse positioning wheel for guiding the side of the plate, the transverse positioning wheel is rotatably connected to the transverse slider, the rotation axis of the transverse positioning wheel extends in the vertical direction, the transverse positioning wheel is a cylindrical wheel, and the number of transverse positioning wheels is set to three, the three transverse positioning wheels are arranged in the longitudinal direction, which can significantly reduce the swaying of the plate, thereby helping to improve the quality of the plate product. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the scraping device of this utility model from the left front view.

[0012] Figure 2 This is a three-dimensional structural diagram of the scraping device of this utility model from the left rear view.

[0013] Figure 3This is a top-view three-dimensional structural diagram of the scraping device of this utility model.

[0014] Figure 4 This is a three-dimensional structural diagram of the lateral positioning component of this utility model.

[0015] Figure 5 This is a partial cross-sectional view of the lateral positioning component of this utility model from the front view.

[0016] Labeling: 1. Frame; 10. Lower scraping assembly; 20. Upper scraping assembly; 2. First lifting plate; 3. First transverse plate; 4. Transverse positioning assembly; 41. Transverse positioning wheel; 411. Middle cantilever shaft; 412. End cantilever shaft; 42. Transverse slider; 421. Vertical boss; 43. Rotating support seat; 44. Transverse positioning servo motor; 45. Transverse positioning adjusting ball screw pair; 5. Vertical positioning disc; 51. Vertical positioning servo motor; 6. Lower scraper; 7. Upper scraper; 8. Second lifting plate; 9. Scraping lifting servo motor. Detailed Implementation

[0017] The present invention will now be further described with reference to the accompanying drawings.

[0018] The edge-scraping device of the edge-banding machine of this utility model, such as Figures 1 to 3 As shown, it includes a stand 1, on which a lower scraping assembly 10 is provided, a lower scraper 6 is provided, and a lateral positioning assembly 4 is provided, as shown. Figure 4 As shown, the lateral positioning component 4 includes a lateral slider 42 and a lateral positioning servo motor 44. The lateral positioning servo motor 44 drives the lateral slider 42 to move laterally (i.e., move back and forth). Specifically, the lower scraping component 10 also includes a first lifting plate 2 and a first transverse plate 3. The first lifting plate 2 is slidably connected to the upright 1 and supported by a vertical floating spring. The first transverse plate 3 is slidably connected to the left side of the first lifting plate 2. A spring baffle is installed at the rear end of the first lifting plate 2, and a lateral floating spring is provided between the rear end face of the first transverse plate 3 and the aforementioned spring baffle. Figure 1 and Figure 2 As shown, the transverse slider 42 is slidably connected to the upper end of the first transverse plate 3 via a corresponding linear guide rail. The transverse positioning assembly 4 also includes a rotating support 43 and a transverse positioning adjusting ball screw pair 45. The rotating support 43 is mounted and connected to the first transverse plate 3. The screw of the transverse positioning adjusting ball screw pair 45 is rotatably connected to the rotating support 43. The nut of the transverse positioning adjusting ball screw pair 45 is installed at the rear end of the transverse slider 42. The transverse positioning servo motor 44 is mounted on the rotating support 43, and the output shaft of the transverse positioning servo motor 44 is connected to the screw of the transverse positioning adjusting ball screw pair 45. Figure 3 and Figure 4As shown, the lower scraping assembly 10 is provided with a transverse positioning wheel 41 for guiding the side of the plate 99. The transverse positioning wheel 41 is rotatably connected to the transverse slider 42. The rotation axis of the transverse positioning wheel 41 extends in the vertical direction. The transverse positioning wheel 41 is a cylindrical wheel; in other words, the transverse positioning wheel 41 forms an outer cylindrical surface. The central axis of the outer cylindrical surface coincides with the rotation axis of the transverse positioning wheel 41, so the plate 99 can contact the outer cylindrical surface. The number of transverse positioning wheels 41 is set to three, and the three transverse positioning wheels 41 are arranged longitudinally (i.e., arranged in the left-right direction). The outer diameters of the three transverse positioning wheels 41 are the same, and from a top-view angle, the rotation centers of the three transverse positioning wheels 41 are located on the same straight line in the left-right direction. Figure 1 and Figure 3 As shown, the middle horizontal positioning wheel 41 corresponds to the lower scraper 6, meaning that the middle horizontal positioning wheel 41 of the three horizontal positioning wheels 41 is in the same position as the lower scraper 6 in the left-right direction.

[0019] like Figure 3 As shown, the sheet 99 is conveyed horizontally from left to right. In some cases, the sheet 99 is slightly skewed, causing the right rear corner of the sheet 99 to first contact the outer cylindrical surface of the leftmost transverse positioning wheel 41. Guided by the leftmost transverse positioning wheel 41, the right rear corner of the sheet 99 can move along the outer cylindrical surface of the leftmost transverse positioning wheel 41 and pass over it. Then, the rear side of the sheet 99 slides against the three transverse positioning wheels 41 in sequence. During this process, the lower scraper 6 scrapes the lower rear edge of the sheet 99. Furthermore, the contact point between the lower scraper 6 and the sheet 99 is located between the contact points of the two left and right transverse positioning wheels 41 and the sheet 99. Therefore, the horizontal rotation of the sheet 99 around the lower scraper 6 is blocked by the two transverse positioning wheels 41, thus enhancing the positioning and guiding effect on the sheet 99. The structure of the three transverse positioning wheels 41 positioning the sheet 99 is similar to that of a surface-type positioning system, which significantly reduces the swaying of the sheet 99 and the vibration marks that occur when the lower scraper 6 scrapes the lower edge chamfer of the sheet 99, thereby improving the quality of the sheet product. Moreover, since the middle transverse positioning wheel 41 corresponds to the lower scraper 6, it is advantageous for the middle transverse positioning wheel 41 to directly position the scraping position of the sheet 99, ensuring accurate scraping depth.

[0020] The horizontal positioning servo motor 44 can drive the horizontal positioning wheel 41 to move back and forth to adjust its position. Moving the horizontal positioning wheel 41 backward will increase the scraping depth of the lower scraper 6, and moving the horizontal positioning wheel 41 forward will decrease the scraping depth of the lower scraper 6. Thus, the scraping depth can be adjusted by the control system. The control system controls the horizontal positioning servo motor 44 to drive the horizontal positioning wheel 41 to adjust its position, which is conducive to convenient and precise online fine adjustment of the scraping depth.

[0021] Furthermore, such as Figure 1 As shown, the lower scraping assembly 10 is equipped with a vertical positioning disk 5 and a vertical positioning servo motor 51. The horizontal positioning wheel 41 located in the middle corresponds to the vertical positioning disk 5. That is to say, the center of the vertical positioning disk 5 of the lower scraping assembly 10 is at the same position as the lower scraper 6 in the left-right direction. The vertical positioning servo motor 51 drives the vertical positioning disk 5 to move vertically. Specifically, the vertical positioning disk 5 is rotatably connected to the corresponding lifting slider. The lifting slider is slidably connected to the first transverse plate 3 through the corresponding linear guide pair. The vertical positioning servo motor 51 is installed on the first transverse plate 3. The vertical positioning servo motor 51 is driven and connected to the lifting slider through the corresponding ball screw pair. Thus, the height position of the vertical positioning disk 5 of the lower scraping assembly 10 can be finely adjusted by the vertical positioning servo motor 51, so that the vertical positioning disk 5 of the lower scraping assembly 10 can be well attached to the bottom of the plate 99.

[0022] Furthermore, such as Figure 5 As shown, the axial width of the two end transverse positioning wheels 41 is greater than the axial width of the middle transverse positioning wheel 41. That is to say, the axial width of the two left and right transverse positioning wheels 41 is larger, while the axial width of the middle transverse positioning wheel 41 is smaller. Figure 1 As shown, since the middle horizontal positioning wheel 41 corresponds to the lower scraper 6, when the middle horizontal positioning wheel 41 is close to the rear side of the plate 99, the lower scraper 6 also contacts the lower edge of the rear side of the plate 99. Therefore, the axial width of the horizontal positioning wheel 41 needs to be set to be small to avoid the lower scraper 6. The axial width of the two left and right horizontal positioning wheels 41 is larger, which can increase the contact range between the two left and right horizontal positioning wheels 41 and the rear side of the plate 99 in the vertical direction, thereby improving the positioning and guiding effect of the plate 99.

[0023] Furthermore, such as Figure 5 As shown, a vertical boss 421 is formed at one end of the horizontal slider 42. In other words, the vertical boss 421 protrudes in the vertical direction. The vertical boss 421 is located between the two horizontal positioning wheels 41. A middle cantilever shaft 411 is screwed onto the vertical boss 421. The middle horizontal positioning wheel 41 is mounted on the middle cantilever shaft 411. A bearing is also provided between the middle horizontal positioning wheel 41 and the middle cantilever shaft 411. In other words, only the end of the middle cantilever shaft 411 that is screwed onto the vertical boss 421 is supported. Figure 5As shown, in the vertical direction, the middle transverse positioning wheel 41 can be aligned with the two left and right transverse positioning wheels 41. However, since the axial width of the first and last two (i.e., the left and right) transverse positioning wheels 41 is greater than the axial width of the middle transverse positioning wheel 41, by setting a vertical boss 421, the cantilever length of the middle cantilever shaft 411 can be reduced, thereby reducing the elastic bending amplitude of the middle cantilever shaft 411. Relatively speaking, this increases the stability of the positioning effect of the middle transverse positioning wheel 41 on the plate 99. In other words, because the axial length of the middle transverse positioning wheel 41 is smaller, the cantilever length of the middle cantilever shaft 411 is also shorter. Figure 5 As shown, the transverse slider 42 is also screwed with the head and tail cantilever shafts 412, and the left and right transverse positioning wheels 41 are respectively installed on the corresponding head and tail cantilever shafts 412.

[0024] Furthermore, such as Figure 1 As shown, the support frame 1 is equipped with an upper scraping assembly 20, which slides up and down. The upper scraping assembly 20 is equipped with an upper scraper 7. A scraping lifting servo motor 9 is installed on the top of the support frame 1, which drives the upper scraping assembly 20 to move vertically. The structural principle of the upper scraping assembly 20 is the same as that of the lower scraping assembly 10. The upper scraping assembly 20 and the lower scraping assembly 10 are distributed on the left and right sides of the support frame 1, and are roughly inverted. The upper scraper 7 is used to scrape the chamfer of the upper edge of the rear side of the plate 99. The upper scraping assembly 20 is equipped with a second lifting plate 8 and a second transverse plate. The structure and function of the second transverse plate are the same as those of the first transverse plate 3. The first transverse plate 3 is slidably connected to the second lifting plate 8. The upper scraper 7 is installed on the second transverse plate. The second lifting plate 8 is slidably connected to the upright frame 1 through the corresponding linear guide rail. The scraping lifting servo motor 9 drives the second lifting plate 8 to move up and down through the corresponding ball screw pair. Therefore, when the thickness specification of the plate 99 changes, the thickness parameter can be set accordingly in the control system. The control system controls the scraping lifting servo motor 9 to drive the second lifting plate 8 to move up and down according to the thickness specification of the plate 99, so as to quickly adjust the height position of the upper scraping assembly 20 (including the upper scraper 7), which is conducive to improving production efficiency.

Claims

1. A scraping device for an edge banding machine, comprising a frame (1), wherein a lower scraping assembly (10) is provided on the frame (1), and the lower scraping assembly (10) is provided with a lower scraper (6), characterized in that: The lower scraping assembly (10) is provided with a transverse positioning assembly (4). The transverse positioning assembly (4) includes a transverse slider (42) and a transverse positioning servo motor (44). The transverse positioning servo motor (44) drives the transverse slider (42) to move laterally. The lower scraping assembly (10) is provided with a transverse positioning wheel (41) for guiding the side of the plate (99). The transverse positioning wheel (41) is rotatably connected to the transverse slider (42). The rotation axis of the transverse positioning wheel (41) extends in the vertical direction. The transverse positioning wheel (41) is a cylindrical wheel. The number of transverse positioning wheels (41) is set to three. The three transverse positioning wheels (41) are arranged longitudinally. The position of the transverse positioning wheel (41) in the middle corresponds to the lower scraper (6).

2. The edge-scraping device of the edge-banding machine according to claim 1, characterized in that: The lower scraping component (10) is provided with a vertical positioning disk (5) and a vertical positioning servo motor (51). The horizontal positioning wheel (41) located in the middle corresponds to the vertical positioning disk (5). The vertical positioning servo motor (51) drives the vertical positioning disk (5) to move vertically.

3. The edge-scraping device of the edge-banding machine according to claim 2, characterized in that: The axial width of the first and last two transverse positioning wheels (41) is greater than the axial width of the middle transverse positioning wheel (41).

4. The edge-scraping device of the edge-banding machine according to claim 3, characterized in that: A vertical boss (421) is formed at one end of the horizontal slider (42). The vertical boss (421) is located between the two horizontal positioning wheels (41) on the left and right. The vertical boss (421) is screwed to a middle cantilever shaft (411). The horizontal positioning wheel (41) located in the middle is mounted on the middle cantilever shaft (411).

5. The edge-scraping device of the edge-banding machine according to claim 1, characterized in that: The stand (1) is provided with an upper scraping component (20), which is slidably arranged up and down. The upper scraping component (20) is provided with an upper scraper (7). The top of the stand (1) is equipped with a scraping lifting servo motor (9), which drives the upper scraping component (20) to move vertically.

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