A fine grinding device for density board

Abstract

This invention relates to the field of MDF processing technology and discloses a fine sanding device for MDF, comprising: a base, a two-dimensional slide table disposed on the upper surface of the base, a board clamping assembly mounted on the two-dimensional slide table, and a groove formed on the surface of the two-dimensional slide table, a mounting bracket fixedly mounted on the base, and a support frame slidably disposed on the side of the mounting bracket near the two-dimensional slide table. This invention employs a technical means of cooperating a first moving component and a second moving component. First, the second moving component drives multiple bases to expand or contract at equal intervals to adjust the distance between multiple electric sanding components. Then, the first moving component drives the electric sanding components to move downwards, thereby achieving the sanding of multiple equidistant circular holes on the MDF board. This overcomes the shortcomings of existing technologies and achieves the technical effects of improving sanding efficiency and ensuring sanding quality.

Description

Technical Field

[0001] The invention relates to the technical field of density board processing, and more specifically, to a density board fine grinding device. Background Art

[0002] Density board, also known as fiberboard, is a man-made board that is often used for interior and exterior decoration, office and household furniture, audio equipment, and vehicle interior decoration. In order to meet the needs of different scenarios such as interior decoration, observation, and sound reduction, it is often necessary to open a single or multiple circular holes on the density board. For example, on interior doors, a single hole is often required to install an observation window, and on decorative panels or wooden sound-absorbing panels, multiple equidistant circular holes are often required. The circular holes initially opened on the density board are often rough and require further polishing before they can be put into use.

[0003] In the prior art, two methods are mostly used for grinding: manual grinding or machine grinding, both of which can complete the grinding task well. Among them, manual grinding requires workers to hold sandpaper or grinders and grind at specified angles and strengths. Machine grinding usually places the plate on the grinder table, inserts the grinding roller into the hole to be polished, and rotates the plate around the working grinding roller for fine grinding.

[0004] Although the above two grinding methods can complete the grinding task well, in the actual operation process, manual grinding has high labor intensity, and the grinding angle and strength are often not in place, and the quality is difficult to guarantee. Machine grinding can usually only grind a single hole at a time, and the efficiency is low. There are certain inconveniences. Summary of the invention

[0005] The invention provides a density board fine grinding device, which solves the technical problems in the related art that the quality of manual grinding is difficult to ensure during the fine grinding of the density board and the machine grinding can only grind a single hole at a time, resulting in low efficiency.

[0006] The present invention provides a density board fine grinding device, comprising:

[0007] Base;

[0008] A two-dimensional slide is arranged on the upper surface of the base; a plate clamping assembly is installed on the two-dimensional slide, and a groove is opened on the surface of the two-dimensional slide;

[0009] A mounting frame, fixedly mounted on the base;

[0010] A support frame, slidably disposed on a side of the mounting frame close to the two-dimensional slide;

[0011] A first moving assembly is arranged on a side of the mounting frame away from the two-dimensional slide, and is used to drive the support frame to reciprocate along the length direction of the mounting frame;

[0012] An odd number of bases are arranged below the transverse plate of the support frame;

[0013] A second moving assembly is mounted on the transverse plate of the support frame, and is used to drive the remaining bases except the base located in the middle position to expand or contract equidistantly toward both sides along the width direction of the mounting frame;

[0014] A number of electric grinding assemblies corresponding to the base are detachably mounted on the lower side of the corresponding base; each of the electric grinding assemblies comprises a connecting frame, the connecting frame is detachably connected to the corresponding base, a sleeve shell is rotatably arranged on the lower side of each connecting frame, a first driving part for driving the sleeve shell to rotate is installed on the connecting frame, an I-shaped plate is slidably arranged on the sleeve shell, a first spring is fixedly connected to the upper surface of the I-shaped plate, an end of the first spring away from the I-shaped plate is fixedly connected to the inner top of the sleeve shell, a pair of relatively arranged electric grinding heads are slidably arranged on the lower side of the I-shaped plate, a reducing assembly is arranged on the I-shaped plate, and when the I-shaped plate and the sleeve shell are close to each other, the reducing assembly drives the two electric grinding heads to move away from each other;

[0015] Each of the variable diameter components includes a pair of extrusion plates fixedly connected to the lower side of the sleeve shell, and limit rods are slidably arranged on the opposite sides of the two extrusion plates. A second spring is fixedly connected to the side of each limit rod close to the corresponding extrusion plate, and one end of the second spring away from the limit rod is fixedly connected to the inner wall of the corresponding extrusion plate. Each of the limit rods has a convex portion at one end away from the corresponding extrusion plate. A force frame plate is sleeved on the I-shaped plate, and a pair of relatively arranged pull rods are hinged on each of the force frame plates. A pair of relatively arranged pull rods are fixedly connected to the lower side of the I-shaped plate The guide plates are arranged in a circle, each of which is slidably connected with a slide plate, the electric grinding head is installed on the side of the slide plate extending outside the guide plate, each of the pull rods is hinged to the corresponding slide plate, and a slide groove for the corresponding pull rod to move is opened on the upper side of the guide plate, and a spring telescopic rod is fixedly connected to both sides of each of the guide plates, the moving end of the spring telescopic rod is fixedly connected to the lower side of the force-bearing frame plate, and the stiffness coefficient of the second spring is greater than the stiffness coefficient of the spring in the spring telescopic rod, and a positioning piece is fixedly connected to the middle part of the lower side of each I-shaped plate.

[0016] Preferably, the distance from the upper side of the limiting rod to the corresponding lower surface of the sleeve is a first length, the distance between the upper surface and the lower surface of the force-bearing frame plate is a second length, and the first length is greater than the second length.

[0017] Preferably, each of the positioning members comprises an outer tube, a positioning laser is fixedly installed inside the outer tube, and each of the outer tubes is fixedly connected to a pair of oppositely arranged transverse axes, and a roller is rotatably connected to the transverse axis.

[0018] Preferably, the plate clamping assembly includes a bidirectional screw rod rotatably arranged in the table body of the two-dimensional slide, the table surface of the two-dimensional slide is slidably arranged with a pair of relatively arranged clamping plates, a pair of symmetrically arranged moving blocks are threadedly connected to the bidirectional screw rod, each of the moving blocks is fixedly connected to the corresponding clamping plates, and the two-dimensional slide is provided with a moving groove for the corresponding moving block to move, and the bidirectional screw rod extends to the end outside the two-dimensional slide and is fixedly connected with a handle.

[0019] Preferably, the first moving component includes a first threaded rod rotatably arranged on the mounting frame, a first connecting block is fixedly connected to the support frame, the first threaded rod is threadedly connected to the first connecting block, a pair of guide rods are fixedly connected to the mounting frame, a pair of second connecting blocks are fixedly connected to the support frame, each of the second connecting blocks is slidably connected to the corresponding guide rod, and a vertical groove for the first connecting block or the second connecting block to move is opened on the mounting frame, a first servo motor is fixedly connected to the support frame, and the output shaft of the first servo motor is fixedly connected to the first threaded rod.

[0020] Preferably, the second moving assembly includes a fixed box fixedly connected to the supporting frame, the fixed box is provided with a second driving part, the second driving part includes a second threaded rod rotatably connected to the fixed box, a moving frame is slidably provided at a position near the inner top in the fixed box, a fixed frame is fixedly connected at a position near the inner bottom in the fixed box, the lower end of the second threaded rod is rotatably connected to the fixed frame, the second threaded rod is threadedly connected to the moving frame, a second servo motor is fixedly connected to the upper surface of the fixed box, the output shaft of the second servo motor is fixedly connected to the upper end of the second threaded rod, a plurality of moving parts are slidably provided on the moving frame, each of the moving parts is composed of a cross plate and a fixed connection on both sides of the cross plate The invention is composed of an extrusion shaft, a plurality of symmetrically arranged oblique grooves are fixedly penetrated on the fixed box, and the inclination angles of the oblique grooves on the same side relative to the horizontal plane gradually decrease along the direction away from the second threaded rod, each of the extrusion shafts is inserted in the corresponding oblique groove, an inner rod is fixedly connected to the lower side of the movable member, and a movable plate corresponding to the number of the movable member is slidably arranged on the fixed frame, a plurality of sleeves are arranged on the fixed box, one of the sleeves is fixedly connected to the middle part of the lower surface of the fixed frame, and the remaining sleeves are fixedly connected to the corresponding movable plate, each of the inner rods is slidably connected to the corresponding sleeve, vertical rods are fixedly connected to both sides of the fixed box, and each of the vertical rods is slidably connected to the movable frame.

[0021] Preferably, each of the first driving parts includes a third servo motor fixedly connected to the connecting frame, and the connecting frame is rotatably connected to a rotating shaft. The output shaft of each of the third servo motors is fixedly connected to the corresponding rotating shaft, and one end of the rotating shaft away from the third servo motor is fixedly connected to the upper side of the corresponding housing.

[0022] Preferably, each of the bases is clamped with the corresponding connecting frame, and a plurality of fastening bolts are threadedly connected to the base, and corresponding positions on the connecting frame are provided with mounting grooves, and each of the mounting grooves is provided with an internal thread that matches the external thread of the fastening bolt.

[0023] The beneficial effects of the present invention are:

[0024] The present invention adopts a technical means of cooperating with a first movable component and a second movable component. First, the second movable component is used to drive multiple bases to expand or contract equidistantly to adjust the distance between multiple electric grinding components. Then, the first movable component is used to drive the electric grinding component to move downward to achieve the grinding of multiple equidistant circular holes on the density board, thereby overcoming the shortcomings of the existing technology and achieving the technical effect of improving the grinding efficiency and ensuring the grinding quality.

[0025] The present invention adopts the technical means of matching a diameter reducing component with an electric grinding head, and uses the diameter reducing component to adjust the rotation radius of the electric grinding component, so that the device can grind circular holes with different apertures on the density board, thereby improving the practicality of the device.

[0026] The present invention adopts a detachable connection method between the base and the connecting frame, so that the device can flexibly adjust the number of electric grinding components according to the number of holes to be polished on the density board, so that the device can flexibly switch between single-hole polishing and multi-hole polishing, further improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a three-dimensional structural schematic diagram for displaying a plate clamping assembly of the present invention;

[0029] Figure 3 It is a three-dimensional structural schematic diagram of the present invention for displaying the electric grinding assembly;

[0030] Figure 4 It is a three-dimensional structural schematic diagram for displaying the variable diameter component of the present invention;

[0031] Figure 5 It is an exploded view of the present invention for showing the casing and the I-shaped plate;

[0032] Figure 6 It is a schematic diagram of the cross-sectional structure of the present invention for displaying the stress-bearing frame plate;

[0033] Figure 7 It is a three-dimensional structural schematic diagram for displaying a positioning member of the present invention;

[0034] Figure 8 is an exploded view of the present invention for illustrating a plate clamping assembly;

[0035] Fig. 9 The present invention is used to show a three-dimensional structural schematic diagram of a first moving component;

[0036] Fig.10 It is a three-dimensional structural schematic diagram for displaying the second moving assembly of the present invention;

[0037] Fig.11 It is a schematic diagram of the three-dimensional structure of the present invention for showing the second movable assembly after the fixed box is removed;

[0038] Fig.12 It is a schematic diagram of the three-dimensional structure of the first driving part of the present invention;

[0039] Fig.13 It is an exploded view of the present invention for showing the connection relationship between the base and the connecting frame.

[0040] In the figure: 10, base; 20, two-dimensional slide; 30, mounting frame; 40, support frame; 50, first moving assembly; 60, base; 70, second moving assembly; 80, electric grinding assembly;

[0041] Plate clamping assembly; 22, groove;

[0042] The first threaded rod; 52, the first connecting block; 53, the guide rod; 54, the second connecting block; 55, the first servo motor.

[0043] 61. Fastening bolts; 62. Mounting slots;

[0044] 71. fixed box; 72. second driving part; 73. moving member; 74. inclined slot; 75. inner rod; 76. moving plate; 77. sleeve; 78. vertical rod;

[0045] Connecting frame; 82, sleeve shell; 83, first driving part; 84, I-shaped plate; 85, first spring; 86, electric grinding head; 87, reducing assembly;

[0046] Bidirectional screw rod; 212, clamping plate; 213, moving block; 214, handle.

[0047] second threaded rod; 722, movable frame; 723, fixed frame; 724, second servo motor;

[0048] The third servo motor; 832, the rotating shaft;

[0049] 871, extrusion plate; 872, limit rod; 873, second spring; 874, force frame plate; 875, pull rod; 876, guide plate; 877, slide plate; 878, spring telescopic rod; 879, positioning member;

[0050] 8791. Outer tube; 8792. Positioning laser; 8793. Horizontal axis; 8794. Roller. DETAILED DESCRIPTION

[0051] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the present specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0052] like Figure 1-Figure 13 As shown, this embodiment provides a density board fine grinding device, comprising:

[0053] The base 10 and the two-dimensional slide 20 are arranged on the upper surface of the base 10, a plate clamping assembly 21 is installed on the two-dimensional slide 20, and a groove 22 is opened on the table surface of the two-dimensional slide 20, a mounting frame 30 is fixedly installed on the base 10, a support frame 40 is slidably arranged on a side of the mounting frame 30 close to the two-dimensional slide 20, a first moving assembly 50 is arranged on a side of the mounting frame 30 away from the two-dimensional slide 20, and is used to drive the support frame 40 to reciprocate along the length direction of the mounting frame 30, an odd number of bases 60 are arranged under the transverse plate body of the support frame 40, a second moving assembly 70 is installed on the transverse plate body of the support frame 40, and is used to drive the remaining bases 60 except the base 60 located in the middle position to expand or contract equidistantly to both sides along the width direction of the mounting frame 30, and an electric grinding assembly 80 corresponding to the number of bases 60 can be detachably installed on the lower side of the corresponding base 60.

[0054] The working principle and beneficial effects of the above technical solution are as follows: first, the density board is clamped and fixed on the two-dimensional slide 20 by using the board clamping assembly 20 .

[0055] If there is only one circular hole on the density board, it is only necessary to install the electric grinding assembly 80 on one of the bases 60, and control the two-dimensional slide 20 to adjust the position of the density board so that the middle position of the electric grinding assembly 80 is opposite to the center of the circular hole.

[0056] Then, the first moving assembly 50 is used to control the support frame 40 to move downward until the grinding part of the electric grinding assembly 80 moves to a position parallel to the circular hole on the density board, and the electric grinding assembly 80 can be started to perform fine grinding on the circular hole on the density board.

[0057] If there are multiple equidistant circular holes on the density board, the electric grinding components 80 can be installed on the multiple bases 60 according to the selectivity of the circular holes, and then the distance between the centers of two adjacent circular holes is measured, and the second moving component 70 is used to control the multiple bases 60 to adjust their positions until the distance between the centers of two adjacent circular holes is equal to the distance between the centers of the above-mentioned two circular holes. The two-dimensional slide 20 can be controlled to adjust the position of the density board so that the middle positions of the multiple electric grinding components 80 are opposite to the center positions of the corresponding circular holes. Similarly, the first moving component 50 is used to control the support frame 40 to move downward until the grinding part of the electric grinding component 80 moves to a position parallel to the circular holes on the density board. The electric grinding component 80 can be started to perform detailed grinding on the circular holes on the density board.

[0058] This embodiment adopts the technical means of cooperating the first movable component 50 and the second movable component 70. First, the second movable component 70 is used to drive the multiple bases 60 to expand or contract equidistantly to adjust the distance between the multiple electric grinding components 80. Then, the first movable component 50 drives the electric grinding component 80 to move downward to achieve the grinding of multiple equidistant circular holes on the density board, thereby overcoming the shortcomings of the existing technology and achieving the technical effect of improving the grinding efficiency and ensuring the grinding quality.

[0059] The present embodiment also adopts a detachable connection method between the base 60 and the electric grinding assembly 80, so that the device can flexibly adjust the number of electric grinding assemblies 80 according to the number of holes to be ground on the density board, so that the device can flexibly switch between single-hole grinding and multi-hole grinding, further improving the practicality of the device.

[0060] In a specific embodiment: each electric grinding assembly 80 includes a connecting frame 81, which is detachably connected to the corresponding base 60, and a casing 82 is rotatably provided on the lower side of each connecting frame 81. A first driving part 83 for driving the casing 82 to rotate is installed on the connecting frame 81, and an I-shaped plate 84 is slidably provided on the casing 82. A first spring 85 is fixedly connected to the upper surface of the I-shaped plate 84, and one end of the first spring 85 away from the I-shaped plate 84 is fixedly connected to the inner top of the casing 82, and a pair of oppositely arranged electric grinding heads 86 are slidably provided on the lower side of the I-shaped plate 84, and a reducing assembly 87 is provided on the I-shaped plate 84, and when the I-shaped plate 84 and the casing 82 are close to each other, the reducing assembly 87 drives the two electric grinding heads 86 away from each other.

[0061] The working principle and beneficial effects of the above technical solution are as follows: when the support frame 40 moves downward, the lower surface of the I-plate 84 first contacts and squeezes the table surface at the bottom of the groove 22. Under the reaction force of the table surface, the sleeve 82 and the I-plate 84 approach each other, the first spring 85 is compressed, and the reducing assembly 87 drives the two electric grinding heads 86 away from each other until the two electric grinding heads 86 are both against the hole walls of the corresponding circular holes on the density board, so that the device can adjust the distance between the two electric grinding heads 86 according to the different aperture sizes of the circular holes, thereby realizing the grinding of circular holes with various aperture sizes on the density board.

[0062] In a specific embodiment: each reducer assembly 87 includes a pair of extrusion plates 871 fixedly connected to the lower side of the sleeve 82, and the opposite sides of the two extrusion plates 871 are slidably provided with limit rods 872, and each limit rod 872 is fixedly connected to a second spring 873 on the side close to the corresponding extrusion plate 871, and the end of the second spring 873 away from the limit rod 872 is fixedly connected to the inner wall of the corresponding extrusion plate 871, and each limit rod 872 has a convex portion at one end away from the corresponding extrusion plate 871, and a force frame plate 874 is sleeved on the I-shaped plate 84, and each force frame plate 874 is hinged with a pair of relatively arranged pull rods 875, and the lower side of the I-shaped plate 84 is fixedly connected A pair of relatively arranged guide plates 876 are connected, and a slide plate 877 is slidably connected in each guide plate 876. The electric grinding head 86 is installed on the side of the slide plate 877 extending outside the guide plate 876. Each pull rod 875 is hinged to the corresponding slide plate 877. The upper side of the guide plate 876 is provided with a sliding groove for the corresponding pull rod 875 to move. Spring telescopic rods 878 are fixedly connected on both sides of each guide plate 876. The moving end of the spring telescopic rod 878 is fixedly connected to the lower side of the force-bearing frame plate 874, and the stiffness coefficient of the second spring 873 is greater than the stiffness coefficient of the spring in the spring telescopic rod 878. A positioning piece 879 is fixedly connected to the middle part of the lower side of each I-shaped plate 84.

[0063] The working principle and beneficial effects of the above technical solution are as follows: when the support frame 40 moves downward, the positioning member 879 first contacts and squeezes the table surface at the bottom of the groove 22. Under the reaction force of the table surface, the sleeve 82 and the I-shaped plate 84 approach each other, and the first spring 85 is compressed. The sleeve 82 drives the two squeezing plates 871 on its lower side to approach the force-bearing frame plate 874, so that the two limit rods 872 squeeze the inclined surface on the upper side of the force-bearing frame plate 874, and the second spring 873 is squeezed by the limit rod 872. Since the stiffness coefficient of the second spring 873 is greater than the stiffness coefficient of the spring in the spring telescopic rod 878, the two limit rods 872 are not close to each other at this time, driving the force-bearing frame plate 874 to move downward, and the force-bearing frame plate 874 drives the two pull rods 875 to move, so that the angle between the two pull rods 875 gradually increases, thereby driving the two slide plates 877 to move respectively. The two slide plates 877 slide relative to the corresponding guide plates 876, and move away from each other in the horizontal direction, so that the grinding part of the electric grinding head 86 thereon is pressed against the hole wall of the circular hole on the density board. The grinding end of the electric grinding head 86 is composed of a hard grinding roller in the middle and a brush surrounding the middle. The brush is squeezed by the hole wall and pressed against the grinding roller. At the same time, under the reaction force of the hole wall, the squeezing force of the force frame plate 874 on the limit rod 872 is increased, so that the two limit rods 872 are close to each other, and the second spring 873 is compressed, so that the force frame plate 874 is able to pass over the limit rod 872 until the upper surface of the force frame plate 874 and the lower surface of the sleeve shell 82 are pressed against each other. At this time, the two electric grinding heads 86 are pressed against the corresponding circular holes, and the spacing between them can be adjusted according to the aperture size of the circular holes on the density board to achieve the grinding of circular holes with various apertures on the density board.

[0064] This embodiment adopts the technical means of matching the diameter reducing assembly 87 and the electric grinding head 86, and uses the diameter reducing assembly 87 to adjust the rotation radius of the electric grinding assembly 80, so that the device can grind the circular holes of different apertures on the density board, thereby improving the practicality of the device.

[0065] In a specific embodiment: the distance from the upper side of the limiting rod 872 to the corresponding lower surface of the sleeve 82 is a first length, the distance between the upper surface and the lower surface of the force-bearing frame plate 874 is a second length, and the first length is greater than the second length.

[0066] The working principle and beneficial effects of the above technical solution are as follows: since the first length is greater than the second length, after the force frame plate 874 passes over the limit rod 872 and its upper surface abuts against the lower surface of the sleeve shell 82, the output shaft of the first servo motor 55 rotates in the opposite direction, driving the support frame 40 to move upward. Under the elastic force of the first spring 85, the sleeve shell 82 and the I-shaped plate 84 move away from each other, so that the force frame plate 874 approaches and squeezes the limit rod 872. The limit rod 872 pulls the force frame plate 874 upward, so that the two electric grinding heads 86 approach each other. The grinding end of the electric grinding head 86 is composed of a hard grinding roller in the middle and a brush surrounding the middle. When the two electric grinding heads 86 approach each other, the brush is adjusted from the original state of tightly squeezing the density board to the state of leaving a little gap between the hole wall of the density board, so as to avoid excessive squeezing of the hole wall of the circular hole on the electric grinding head 86, facilitate the rotation of the electric grinding head 86, and grind the hole wall more fully.

[0067] In a specific embodiment: each positioning member 879 includes an outer tube 8791, a positioning laser 8792 is fixedly installed inside the outer tube 8791, and each outer tube 8791 is fixedly connected to a pair of oppositely arranged horizontal shafts 8793, and a roller 8794 is rotatably connected to the horizontal shaft 8793.

[0068] The working principle and beneficial effects of the above technical solution are as follows: the laser beam of the positioning laser 8972 is irradiated vertically downward to form a light spot on the two-dimensional slide 20. The staff operates the two-dimensional slide 20 and adjusts the position of the density plate thereon so that the light spot is irradiated at the center position of the corresponding circular hole to complete the positioning work. The outer tube 8791 can protect the positioning laser 8791 from being squeezed, and the roller 8794 can replace the sliding friction between the outer tube 9781 and the surface of the two-dimensional slide 20 with rolling friction, thereby reducing the loss caused by friction and extending the service life of the device.

[0069] In a specific embodiment: the plate clamping assembly 21 includes a bidirectional screw rod 211 rotatably arranged in the table body of the two-dimensional slide 20, and the table surface of the two-dimensional slide 20 is slidably arranged with a pair of relatively arranged clamping plates 212, and the bidirectional screw rod 211 is threadedly connected with a pair of symmetrically arranged moving blocks 213, each moving block 213 is fixedly connected to the corresponding clamping plate 212, and the two-dimensional slide 20 is provided with a moving groove for the corresponding moving block 213 to move, and the end of the bidirectional screw rod 211 extending outside the two-dimensional slide 20 is fixedly connected with a handle 214.

[0070] The working principle and beneficial effects of the above technical solution are as follows: turning the handle 214 drives the bidirectional screw rod 211 to rotate synchronously, thereby driving the two moving blocks 213 and the corresponding splints 212 to move synchronously. The splints 212 are restricted in their movement trajectory by the surface of the two-dimensional slide 20 and can only make stable movements in the horizontal direction. When the bidirectional screw rod 211 rotates forward, the two splints 212 approach each other to clamp the density board. When rotating in the reverse direction, the two splints 212 move away from each other to facilitate the removal of the density board.

[0071] In a specific embodiment: the first moving component 50 includes a first threaded rod 51 rotatably set on the mounting frame 30, a first connecting block 52 is fixedly connected to the support frame 40, the first threaded rod 51 is threadedly connected to the first connecting block 52, a pair of guide rods 53 are fixedly connected to the mounting frame 30, a pair of second connecting blocks 54 are fixedly connected to the support frame 40, each second connecting block 54 is slidably connected to the corresponding guide rod 53, and a vertical groove for the first connecting block 52 or the second connecting block 54 to move is opened on the mounting frame 30, a first servo motor 55 is fixedly connected to the support frame 40, and the output shaft of the first servo motor 55 is fixedly connected to the first threaded rod 51.

[0072] The working principle and beneficial effects of the above technical solution are as follows: the first servo motor 55 is started, and the output shaft of the first servo motor 55 rotates, driving the first threaded rod 51 to rotate, and the first threaded rod 51 drives the first connecting block 52 to move, thereby driving the support frame 40 to move, and the support frame 40 drives the two second connecting blocks 54 and the corresponding guide rods 53 to slide relative to each other. At the same time, the support frame 40 is restricted in its moving trajectory by the guide rods 53, and can only make stable movements in the vertical direction.

[0073] In a specific embodiment, the second moving assembly 70 includes a fixed box 71 fixedly connected to the support frame 40, the fixed box 71 is provided with a second driving part 72, the second driving part 72 includes a second threaded rod 721 rotatably connected to the fixed box 71, a moving frame 722 is slidably provided near the inner top of the fixed box 71, a fixed frame 723 is fixedly connected near the inner bottom of the fixed box 71, the lower end of the second threaded rod 721 is rotatably connected to the fixed frame 723, the second threaded rod 721 is threadedly connected to the moving frame 722, a second servo motor 724 is fixedly connected to the upper surface of the fixed box 71, the output shaft of the second servo motor 724 is fixedly connected to the upper end of the second threaded rod 721, a plurality of moving members 73 are slidably provided on the moving frame 722, each moving member 73 is composed of a horizontal plate and It is composed of extrusion shafts fixedly connected on both sides of the horizontal plate, a plurality of symmetrically arranged oblique grooves 74 are fixedly penetrated on the fixed box 71, and the inclination angle of the oblique grooves 74 on the same side relative to the horizontal plane gradually decreases in the direction away from the second threaded rod 721, each extrusion shaft is inserted in the corresponding oblique groove 74, an inner rod 75 is fixedly connected to the lower side of the movable member 73, and a corresponding number of movable plates 76 are slidably arranged on the fixed frame 723, a plurality of sleeves 77 are arranged on the fixed box 71, one of the sleeves 77 is fixedly connected to the middle part of the lower surface of the fixed frame 723, and the remaining sleeves 77 are fixedly connected to the corresponding movable plate 76, each inner rod 75 is slidably connected to the corresponding sleeve 77, vertical rods 78 are fixedly connected to both sides of the fixed box 71, and each vertical rod 78 is slidably connected to the movable frame 722.

[0074] The working principle and beneficial effects of the above technical solution are as follows: when it is necessary to adjust the distance between the multiple electric grinding components 80, first measure the distance between the centers of two adjacent holes on the equidistant porous density plate, and then start the second servo motor 724. The output shaft of the second servo motor 724 rotates, driving the second threaded rod 721 to rotate synchronously. The second threaded rod 721 drives the moving frame 722 to move. The moving frame 722 is restricted by the vertical rod 78 in its moving trajectory and can only make stable movements in the vertical direction. When the moving frame 722 moves downward, the moving frame 722 drives the multiple moving parts 73 to move downward synchronously. The extrusion shafts at both ends of the moving parts 73 slide in the corresponding inclined grooves 74. Under the reaction force of the inclined grooves 74, the multiple moving parts 73 move obliquely downward along the grooves of the corresponding inclined grooves 74, thereby driving the corresponding inner rods 75 to move synchronously. While the inner rods 75 slide relative to the corresponding sleeves 77, because the inner rods 75 slide obliquely downward The second threaded rod 721 is symmetrically axially moved on both sides. The inclined grooves 74 are also symmetrically arranged, and the inclination angle of the inclined grooves 74 on the same side relative to the horizontal plane gradually decreases in the direction away from the second threaded rod 721, so that the multiple inner rods 75 are equidistantly diffused in the horizontal direction. The inner rod 75 squeezes the side wall of the corresponding sleeve 77 while sliding into the corresponding sleeve 77, driving the corresponding sleeve 77 and the movable plate 76 to move, so that the movable plate 76 and the fixed frame 723 slide relative to each other. At the same time, the movable plate 76 is restricted by the fixed frame 723 in the movement trajectory, so that the multiple movable plates 76 and the corresponding sleeve 77 are all equidistantly diffused to both sides with the second threaded rod 721 as the center line. On the contrary, when the movable frame 722 moves upward, the multiple movable plates 76 are equidistantly contracted to the middle with the second threaded rod 721 as the center line, thereby driving the equidistant adjustment of the spacing between the multiple electric grinding assemblies 80 to achieve the grinding of circular holes with different spacings.

[0075] In a specific embodiment: each first driving part 83 includes a third servo motor 831 fixedly connected to the connecting frame 81, and a rotating shaft 832 is rotatably connected to the connecting frame 81. The output shaft of each third servo motor 831 is fixedly connected to the corresponding rotating shaft 832, and one end of the rotating shaft 832 away from the third servo motor 831 is fixedly connected to the upper side of the corresponding sleeve 82.

[0076] The working principle and beneficial effects of the above technical solution are as follows: the third servo motor 831 is started, and the output shaft of the third servo motor 831 rotates, driving the sleeve 82 to rotate synchronously, and then driving the electric grinding assembly 80 to rotate as a whole.

[0077] In a specific embodiment: each base 60 is clamped with the corresponding connecting frame 81, and a plurality of fastening bolts 61 are threadedly connected to the base 60, and a mounting groove 62 is opened at a corresponding position on the connecting frame 81, and each mounting groove 62 is provided with an internal thread that is compatible with the external thread of the fastening bolt 61.

[0078] The working principle and beneficial effects of the above technical solution are as follows: the connecting frame 81 and the base 60 can be detachably connected together by tightening the bolts 61, so that the device can flexibly adjust the number of electric grinding components 80, further improving the practicality of the device.

[0079] Working principle:

[0080] First, turn the handle 214 to drive the bidirectional screw 211 to rotate synchronously, and then drive the two moving blocks 213 and the corresponding clamping plates 212 to move synchronously. The clamping plates 212 are restricted in their movement trajectory by the surface of the two-dimensional slide 20 and can only make stable movements in the horizontal direction. When the bidirectional screw 211 rotates forward, the two clamping plates 212 approach each other to clamp the density board.

[0081] If there is only one circular hole on the density board, it is only necessary to install the electric grinding assembly 80 on one of the bases 60, and control the two-dimensional slide 20 to adjust the position of the density board. The laser beam of the positioning laser 8972 is irradiated vertically downward to form a light spot on the two-dimensional slide 20. The staff operates the two-dimensional slide 20 and adjusts the position of the density board on it so that the light spot is irradiated at the center position of the corresponding circular hole to complete the positioning work.

[0082] Subsequently, the first moving assembly 50 is used to control the support frame 40 to move downward. When the support frame 40 moves downward, the positioning member 879 first contacts and squeezes the table surface at the bottom of the groove 22. Under the reaction force of the table surface, the sleeve 82 and the I-shaped plate 84 approach each other, and the first spring 85 is compressed. The sleeve 82 drives the two squeezing plates 871 on the lower side thereof to approach the force-bearing frame plate 874, so that the two limiting rods 872 squeeze the inclined surface on the upper side of the force-bearing frame plate 874, and the second spring 873 is squeezed by the limiting rod 872. 3 is greater than the spring coefficient of the spring in the spring telescopic rod 878. At this time, the two limit rods 872 are not close to each other, driving the force frame plate 874 to move downward, and the force frame plate 874 drives the two pull rods 875 to move, so that the angle between the two pull rods 875 gradually increases, and then drives the two slide plates 877 to slide relative to the corresponding guide plates 876 respectively. The two slide plates 877 move away from each other in the horizontal direction, so that the grinding part of the electric grinding head 86 thereon and the hole wall of the circular hole on the density board are pressed against each other.

[0083] The grinding end of the electric grinding head 86 is composed of a hard grinding roller in the middle and a brush surrounding the middle. The brush is squeezed by the hole wall and pressed against the grinding roller. At the same time, under the reaction force of the hole wall, the squeezing force of the force frame plate 874 on the limit rod 872 increases, so that the two limit rods 872 are close to each other, and the second spring 873 is compressed, and the force frame plate 874 is able to pass over the limit rod 872 until the upper surface of the force frame plate 874 and the lower surface of the sleeve 82 are against each other. At this time, the two electric grinding heads 86 are against the corresponding circular holes, and the spacing between them can be adjusted according to the aperture size of the circular holes on the density board to achieve the grinding of circular holes with various apertures on the density board.

[0084] Since the first length is greater than the second length, after the force frame plate 874 passes over the limit rod 872 and its upper surface abuts against the lower surface of the sleeve shell 82, the output shaft of the first servo motor 55 rotates in the opposite direction, driving the support frame 40 to move upward. Under the elastic force of the first spring 85, the sleeve shell 82 and the I-shaped plate 84 move away from each other, so that the force frame plate 874 approaches and squeezes the limit rod 872. The limit rod 872 pulls the force frame plate 874 upward, so that the two electric grinding heads 86 approach each other. The grinding end of the electric grinding head 86 is composed of a hard grinding roller in the middle and a brush surrounding the middle. When the two electric grinding heads 86 approach each other, the brush is adjusted from the original state of tightly squeezing the density board to a state with a little gap between the hole wall of the density board, so as to avoid excessive squeezing of the electric grinding head 86 by the hole wall of the round hole, facilitate the rotation of the electric grinding head 86, and grind the hole wall more fully.

[0085] If there are multiple equidistant circular holes on the density board, the electric grinding assembly 80 can be installed on multiple bases 60 according to the selectivity of the circular holes, and then the distance between the centers of two adjacent circular holes is measured, and the second servo motor 724 is started. The output shaft of the second servo motor 724 rotates, driving the second threaded rod 721 to rotate synchronously, and the second threaded rod 721 drives the moving frame 722 to move. The moving trajectory of the moving frame 722 is restricted by the vertical rod 78, and it can only make stable movements in the vertical direction. When the moving frame 722 moves downward, the moving frame 722 drives multiple moving parts 73 to move downward synchronously, and the extrusion shafts at both ends of the moving parts 73 slide in the corresponding inclined grooves 74.

[0086] Under the reaction force of the inclined groove 74, multiple moving members 73 move obliquely downward along the groove direction of the corresponding inclined groove 74, thereby driving the corresponding inner rod 75 to move synchronously. While the inner rod 75 slides relatively with the corresponding sleeve 77, since the inner rod 75 slides obliquely downward and moves in a diffuse manner on both sides with the second threaded rod 721 as the symmetrical axis, the inclined groove 74 is also symmetrically arranged, and the inclination angle of the inclined groove 74 on the same side relative to the horizontal plane gradually decreases in the direction away from the second threaded rod 721, so that multiple inner rods 75 are equidistantly diffused in the horizontal direction. When the inner rod 75 slides into the corresponding sleeve 77, it squeezes its side wall, driving the corresponding sleeve 77 and the moving plate 76 to move, so that the moving plate 76 and the fixed frame 723 slide relatively, and at the same time, the moving plate 76 is restricted by the fixed frame 723 in its moving trajectory, so that multiple moving plates 76 and the corresponding sleeves 77 are all equidistantly diffused to both sides with the second threaded rod 721 as the center line.

[0087] On the contrary, when the movable frame 722 moves upward, the multiple movable plates 76 shrink equidistantly toward the middle with the second threaded rod 721 as the center line, thereby driving the equidistant adjustment of the spacing between the multiple electric grinding components 80 to achieve the grinding of circular holes with different spacings. Similarly, the first movable component 50 is used to control the support frame 40 to move downward to carry out the grinding work.

[0088] The above describes an embodiment of the present invention, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make many forms, all of which are protected by this embodiment.

Claims

1. A fine grinding device for density board, characterized in that: include: Base (10); A two-dimensional slide table (20) is arranged on the upper surface of the base (10); a plate clamping assembly (21) is installed on the two-dimensional slide table (20), and a groove (22) is provided on the surface of the two-dimensional slide table (20); A mounting frame (30) fixedly mounted on the base (10); A support frame (40) slidably disposed on a side of the mounting frame (30) close to the two-dimensional slide table (20); A first moving assembly (50) is arranged on a side of the mounting frame (30) away from the two-dimensional slide table (20) and is used to drive the support frame (40) to move back and forth along the length direction of the mounting frame (30); An odd number of bases (60) are arranged below the transverse plate of the support frame (40); A second moving assembly (70) is mounted on a transverse plate of the support frame (40) and is used to drive the remaining bases (60) except the base (60) located in the middle to expand or contract equidistantly toward both sides along the width direction of the mounting frame (30); A number of electric grinding assemblies (80) corresponding to the base (60) are provided, and the electric grinding assemblies (80) are detachably mounted on the lower side of the corresponding base (60); each of the electric grinding assemblies (80) comprises a connecting frame (81), the connecting frame (81) is detachably connected to the corresponding base (60), a casing (82) is rotatably arranged on the lower side of each connecting frame (81), a first driving part (83) for driving the casing (82) to rotate is mounted on the connecting frame (81), and a sliding part (83) is mounted on the casing (82) An I-shaped plate (84) is arranged, and a first spring (85) is fixedly connected to the upper surface of the I-shaped plate (84), and one end of the first spring (85) away from the I-shaped plate (84) is fixedly connected to the inner top of the casing (82); a pair of electric grinding heads (86) arranged opposite to each other are slidably arranged on the lower side of the I-shaped plate (84); a diameter reducing assembly (87) is arranged on the I-shaped plate (84), and when the I-shaped plate (84) and the casing (82) are close to each other, the diameter reducing assembly (87) drives the two electric grinding heads (86) to move away from each other; Each of the reducing components (87) comprises a pair of extrusion plates (871) fixedly connected to the lower side of the sleeve (82); limiting rods (872) are slidably arranged on opposite sides of the two extrusion plates (871); a second spring (873) is fixedly connected to the side of each limiting rod (872) close to the corresponding extrusion plate (871); an end of the second spring (873) away from the limiting rod (872) is fixedly connected to the inner wall of the corresponding extrusion plate (871); an end of each limiting rod (872) away from the corresponding extrusion plate (871) has a convex portion; a force-bearing frame plate (874) is sleeved on the I-shaped plate (84); each of the force-bearing frame plates (874) is hinged with a pair of relatively arranged pull rods (875); a pair of relatively arranged pull rods (875) are fixedly connected to the lower side of the I-shaped plate (84); The guide plate (876) is provided with a slide plate (877) in a sliding connection therein, each of the guide plates (876) is slidably connected therein, the electric grinding head (86) is mounted on a side of the slide plate (877) extending outside the guide plate (876), each of the pull rods (875) is hinged to the corresponding slide plate (877), a slide groove for movement of the corresponding pull rod (875) is provided on the upper side of the guide plate (876), a spring telescopic rod (878) is fixedly connected to both sides of each of the guide plates (876), the movable end of the spring telescopic rod (878) is fixedly connected to the lower side of the force-bearing frame plate (874), and the stiffness coefficient of the second spring (873) is greater than the stiffness coefficient of the spring in the spring telescopic rod (878), and a positioning member (879) is fixedly connected to the middle part of the lower side of each of the I-shaped plates (84).

2. A density board fine grinding device according to claim 1, characterized in that: The distance from the upper side of the limiting rod (872) to the corresponding lower surface of the sleeve (82) is a first length, the distance between the upper surface and the lower surface of the force-bearing frame plate (874) is a second length, and the first length is greater than the second length.

3. A density board fine grinding device according to claim 2, characterized in that: Each of the positioning members (879) comprises an outer tube (8791), a positioning laser (8792) being fixedly installed inside the outer tube (8791), and each of the outer tubes (8791) is fixedly connected to a pair of oppositely arranged transverse shafts (8793), and a roller (8794) is rotatably connected to the transverse shaft (8793).

4. A density board fine grinding device according to claim 3, characterized in that: The plate clamping assembly (21) includes a bidirectional screw rod (211) rotatably arranged in the table body of the two-dimensional slide (20); a pair of relatively arranged clamping plates (212) are slidably arranged on the table surface of the two-dimensional slide (20); a pair of symmetrically arranged moving blocks (213) are threadedly connected to the bidirectional screw rod (211); each of the moving blocks (213) is fixedly connected to the corresponding clamping plates (212); and a moving groove for the corresponding moving block (213) to move is opened on the two-dimensional slide (20); and a handle (214) is fixedly connected to one end of the bidirectional screw rod (211) extending outside the two-dimensional slide (20).

5. A density board fine grinding device according to claim 4, characterized in that: The first moving assembly (50) comprises a first threaded rod (51) rotatably arranged on the mounting frame (30); a first connecting block (52) is fixedly connected to the support frame (40); the first threaded rod (51) is threadedly connected to the first connecting block (52); a pair of guide rods (53) is fixedly connected to the mounting frame (30); a pair of second connecting blocks (54) is fixedly connected to the support frame (40); each of the second connecting blocks (54) is slidably connected to a corresponding guide rod (53); a vertical slot for the first connecting block (52) or the second connecting block (54) to move is provided on the mounting frame (30); a first servo motor (55) is fixedly connected to the support frame (40); an output shaft of the first servo motor (55) is fixedly connected to the first threaded rod (51).

6. A density board fine grinding device according to claim 5, characterized in that: The second moving assembly (70) comprises a fixed box (71) fixedly connected to the support frame (40), the fixed box (71) being provided with a second driving part (72), the second driving part (72) comprising a second threaded rod (721) rotatably connected to the fixed box (71), a moving frame (722) being slidably arranged near the inner top of the fixed box (71), a fixed frame (723) being fixedly connected near the inner bottom of the fixed box (71), the lower end of the second threaded rod (721) being rotatably connected to the fixed frame (723), the second threaded rod (721) being threadedly connected to the moving frame (722), a second servo motor (724) being fixedly connected to the upper surface of the fixed box (71), the output shaft of the second servo motor (724) being fixedly connected to the upper end of the second threaded rod (721), a plurality of moving members (73) being slidably arranged on the moving frame (722), each of the moving members (73) comprising a horizontal plate and a member fixedly connected to the horizontal plate. The fixing box (71) is composed of extrusion shafts on both sides of the plate, a plurality of symmetrically arranged oblique grooves (74) are fixedly penetrated on the fixing box (71), and the inclination angle of the oblique grooves (74) located on the same side relative to the horizontal plane gradually decreases along the direction away from the second threaded rod (721), each of the extrusion shafts is inserted into the corresponding oblique groove (74), the lower side of the moving member (73) is fixedly connected to the inner rod (75), and the fixing frame (723) is slidably provided with a number of moving plates corresponding to the number of the moving members (73) (76), a plurality of sleeves (77) are provided on the fixed box (71), one of the sleeves (77) is fixedly connected to the middle of the lower surface of the fixed frame (723), the remaining sleeves (77) are fixedly connected to the corresponding movable plate (76), each of the inner rods (75) is slidably connected to the corresponding sleeve (77), both sides of the fixed box (71) are fixedly connected to vertical rods (78), and each of the vertical rods (78) is slidably connected to the movable frame (722).

7. A density board fine grinding device according to claim 6, characterized in that: Each of the first driving parts (83) comprises a third servo motor (831) fixedly connected to the connecting frame (81); a rotating shaft (832) is rotatably connected to the connecting frame (81); an output shaft of each of the third servo motors (831) is fixedly connected to the corresponding rotating shaft (832); and one end of the rotating shaft (832) away from the third servo motor (831) is fixedly connected to the upper side of the corresponding sleeve (82).

8. A density board fine grinding device according to claim 7, characterized in that: Each of the bases (60) is clamped with the corresponding connecting frame (81), and a plurality of fastening bolts (61) are threadedly connected to the base (60). A mounting groove (62) is provided at a corresponding position on the connecting frame (81), and each of the mounting grooves (62) is provided with an internal thread that matches the external thread of the thread portion of the fastening bolt (61).

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