Abrasive belt polishing device

Abstract

The utility model discloses a kind of abrasive belt polishing devices, comprising: support base body;Abrasive belt roll, is provided with 2, symmetrically arranged on the support base body;Abrasive belt, one end is wound to one of the abrasive belt roll, the other end is wound to another abrasive belt roll;Sanding pad, press is arranged on the abrasive belt section between 2 abrasive belt rolls;Drive unit, installed to the support base body, for driving 2 abrasive belt rolls respectively do winding and unwinding movement, so that abrasive belt moves relative to sanding pad to change the abrasive belt part contacted with the polished piece.The abrasive belt polishing device proposed by the utility model solves the problem of frequent replacement existing in the present abrasive belt polishing.

Description

Technical Field

[0001] This utility model belongs to the technical field of sheet metal processing equipment, specifically, it relates to an improvement in the structure of a belt sanding device. Background Technology

[0002] Existing belt sanding devices, such as sanders, include a drive roller and driven rollers. Two driven rollers can be set up and arranged side by side, with the drive roller positioned above. The sanding belt is wound around the drive roller and the two driven rollers. A sanding pad, which is a thin strip, is fixed on the frame and pressed onto the sanding belt between the two driven rollers to apply force to the sanding belt. The sanding pad is pressed onto the sanding belt to perform sanding operations on the workpiece, such as a sheet of wood.

[0003] The sanding belt is wound onto the drive roller and driven roller to make a looping motion. The length of the sanding belt is fixed. After a period of use, the sanding belt will be completely worn and needs to be replaced. The sanding belt is replaced frequently and the replacement cycle is short, which reduces production efficiency.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] This utility model addresses the aforementioned technical problems of existing belt sanding devices by proposing a novel belt sanding device that solves the problem of frequent replacement required in existing belt sanding devices.

[0006] To achieve the above-mentioned utility model / design objectives, the present utility model adopts the following technical solution:

[0007] A belt abrasive grinding device, comprising:

[0008] Supporting substrate;

[0009] Two sanding belt rollers are provided and symmetrically arranged on the support base.

[0010] The sanding belt has one end wound onto one of the sanding belt rollers and the other end wound onto the other sanding belt roller;

[0011] The sanding pad is pressed onto the sanding belt section located between the two sanding rollers;

[0012] The drive unit, installed on the support base, is used to drive the two sanding belt rollers to perform winding and unwinding movements respectively, so that the sanding belt moves relative to the sanding pad to change the sanding belt portion in contact with the workpiece being sanded.

[0013] In some embodiments of this application, the sanding pad is movable, and adsorption channels are formed on the sanding pad for adsorbing the sanding belt and moving synchronously with it.

[0014] In some embodiments of this application, the sanding pad is located below and between the two sanding belt rollers, and is pressed onto the top surface of the sanding belt to form a V-shaped structure between the sanding pad and the two sanding belt rollers.

[0015] In some embodiments of this application, the drive unit includes: a first drive device, mounted on a support base, and connected to one of the sanding belt rollers via a drive mechanism;

[0016] The second drive unit is mounted on the support base and is connected to another sanding belt roller drive;

[0017] During the grinding operation, the first drive unit drives the sanding belt roller connected to it to perform a winding / unwinding motion, and the second drive unit drives the sanding belt roller connected to it to perform an unwinding / winding motion.

[0018] In some embodiments of this application, the support base includes: two base frames symmetrically arranged at both ends of the sanding belt roller;

[0019] Both sanding belt rollers are rotatably mounted on one of the base frames at one end and rotatably mounted on the other base frame at the other end.

[0020] In some embodiments of this application, the base frame includes:

[0021] The main body of the frame is arranged vertically;

[0022] And a frame support arm, connected to the frame body, two of which are arranged opposite each other, the first drive device and the second drive device are assembled on the two frame support arms of one of the base frames.

[0023] In some embodiments of this application, the first driving device includes: a first driving motor and a first reducer connected to the first driving motor, wherein the first reducer is drivenly connected to the sanding belt roller.

[0024] Some embodiments of this application include:

[0025] The tensioning mechanism, pressing against the sanding belt between the sanding pad and the sanding roller, includes:

[0026] The tensioning drive component is rotatably assembled onto the support base and includes a movable part;

[0027] The connecting component is rotatably connected to the moving part;

[0028] The tensioning roller assembly is eccentric, with both ends rotatably connected to two base frames and connected to the connecting assembly;

[0029] When the tensioning drive unit moves the moving part, it drives the connecting component to rotate. The connecting component drives the tensioning roller group connected to it to rotate and change its position, pressing the sanding belt to move towards the symmetrical line between the two sanding belt rollers to tension the sanding belt.

[0030] In some embodiments of this application, the sanding pad includes:

[0031] Sanded substrate;

[0032] And an elastic buffer element arranged below the sanding substrate;

[0033] The wear-resistant part is arranged below the elastic buffer, and after wrapping the elastic buffer, its two ends extend upward to connect and fix with the sanding substrate.

[0034] Compared with the prior art, the advantages and positive effects of this utility model are:

[0035] In this invention, the sanding belt is arranged such that one end is wound around one sanding belt roller multiple times, and the other end is wound around another sanding belt roller multiple times. After the sanding belt wears out, the portion of the sanding belt participating in grinding under the sanding pad can be replaced by continuous winding and unwinding operations. Compared with the existing technology of fixed-length winding sanding belt, this increases the length of the sanding belt participating in grinding. The sanding belt can be recycled and unwound for repeated use, reducing the sanding belt replacement cycle and improving production efficiency.

[0036] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a three-dimensional structural diagram of one embodiment of the belt sanding device proposed in this utility model;

[0039] Figure 2 This is a structural diagram showing the connection between the eccentric grinding mechanism, the sanding pad, and the base frame in one embodiment of the belt sanding device proposed in this utility model.

[0040] Figure 3 This is a structural diagram of the base frame, drive unit, and sanding pad of one embodiment of the sanding belt grinding device proposed in this utility model;

[0041] Figure 4 This is a structural diagram of the base frame and tension roller assembly of one embodiment of the belt sanding device proposed in this utility model;

[0042] Figure 5 yes Figure 4 A magnified view of part A.

[0043] In the diagram, 110 is two base frames; 111 is the main body of the frame; 112 is the support arm of the frame; 113 is the bent frame body; 200 is the sanding belt roller; 300 is the sanding belt; 400 is the sanding pad; 410 is the sanding base; 420 is the elastic buffer; 430 is the wear-resistant part; 510 is the first drive device; 520 is the second drive device; 600 is the tensioning mechanism; 610 is the tensioning drive component; 620 is the connecting part; 621 is the first connecting part; 622 is the second connecting part; 640 is the tensioning roller group; 641 is the inner tensioning roller; 642 is the outer tensioning roller; 700 is the eccentric grinding mechanism; 711 is the drive motor; 712 is the reducer; 713 is the synchronous connecting shaft; 720 is the rotating part; 721 is the eccentric part; 730 is the connecting sleeve; and 740 is the fixing plate. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. In the description of the embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0047] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0048] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0049] In some embodiments of this application, a belt sanding apparatus is proposed, comprising:

[0050] Supporting substrate;

[0051] Two sanding belt rollers 200 are provided and symmetrically arranged on the support base;

[0052] The sanding belt 300 is wound at one end onto one of the sanding belt rollers 200 and at the other end onto another sanding belt roller 200.

[0053] The axes of the two sanding belt rollers 200 are set parallel to each other and are in the same horizontal plane.

[0054] When selecting, the abrasive belt 300 can be a longer abrasive belt roll, which is partially stored by being wound onto two abrasive belt rollers 200 respectively, thereby increasing the length of the abrasive belt 300 used for grinding.

[0055] A sanding pad 400 is pressed onto the sanding belt section located between two sanding belt rollers 200.

[0056] The drive unit is installed on the support base and is used to drive the two sanding belt rollers 200 to perform winding and unwinding movements respectively, so that the sanding belt 300 moves relative to the sanding pad 400 to change the part of the sanding belt 300 in contact with the plate being sanded.

[0057] When the drive unit operates, it drives two sanding belt rollers 200 to operate synchronously. One sanding belt roller 200 performs a winding motion, while the other sanding belt roller 200 performs an unwinding motion. The synchronous winding and unwinding motion of the two sanding belt rollers 200 ensures that the sanding belt 300 between the two sanding belt rollers 200 can always be kept taut, thus ensuring the grinding effect.

[0058] In this invention, the sanding belt 300 is arranged such that one end is wound around one sanding belt roller 200 multiple times, and the other end is wound around another sanding belt roller 200 multiple times. This structure allows the portion of the sanding belt 300 participating in grinding below the sanding pad 400 to be replaced by continuous unwinding and rewinding operations after the sanding belt 300 wears out. Compared with the existing technology of fixed-length winding of the sanding belt 300, this increases the length of the sanding belt 300 participating in grinding. The sanding belt 300 can be recycled and unwound for repeated use, reducing the replacement cycle of the sanding belt 300 and improving production efficiency.

[0059] In this embodiment, the V-shaped sanding belt 300 structure allows the sanding belt 300 to carry dust after being ground by the sanding pad 400. When the sanding belt 300 carrying dust moves upward at an angle, the dust will automatically fall off, reducing the adhesion of dust to the sanding belt 300.

[0060] In some embodiments of this application, the sanding pad 400 is movable, and adsorption channels are formed on the sanding pad 400 for adsorbing the sanding belt 300 to move synchronously with it.

[0061] The sanding pad 400 moves to drive the sanding belt 300 and move synchronously with it. The sanding pad 400 drives the sanding belt 300 to achieve the sanding of the board.

[0062] To ensure that the sanding belt 300 and the sanding pad 400 are tightly fitted and can move synchronously with the sanding pad 400, an adsorption channel is provided on the sanding pad 400. During use, an adsorption fan is configured. The operation of the adsorption fan creates negative pressure inside the adsorption channel, which firmly adsorbs the sanding belt 300 to the bottom of the sanding pad 400. Furthermore, the method of using negative pressure adsorption to ensure a tight fit between the two does not prevent the drive unit from moving the sanding belt 300 and changing the position of the sanding belt 300 participating in the grinding process during the winding and unwinding.

[0063] In some embodiments of this application, the sanding pad 400 is located below and between the two sanding belt rollers 200, and is pressed onto the top surface of the sanding belt 300, forming a V-shaped structure on the line connecting the sanding pad 400 and the two sanding belt rollers 200.

[0064] Two sanding rollers are arranged at the top, and a sanding pad 400 is arranged in the middle position below the two sanding rollers. When the pad 400 presses on the sanding belt 300, it will give the sanding belt 300 a downward pressing force. Meanwhile, the two sanding rollers, which are located above the sanding pad 400, give the sanding belt 300 an upward lifting force. Under the opposite forces of the sanding pad 400 and the sanding rollers on the sanding belt 300, the sanding belt 300 and the sanding pad 400 can be more tightly attached, ensuring that the two will not have relative displacement when the sanding belt 300 moves the sanding pad 400.

[0065] In some embodiments of this application, the grinding machine further includes a grinding device connected to the sanding pad 400 for driving the sanding pad 400 to move. The grinding device includes two eccentric grinding mechanisms 700 arranged side by side.

[0066] Each eccentric grinding mechanism 700 includes: a rotating component 720 having an eccentric portion 721;

[0067] A drive mechanism is connected to the rotating component 720 and drives the rotating component 720 to rotate;

[0068] The eccentric portions 721 of the two eccentric grinding mechanisms 700 are both connected to the sanding pad 400, which is connected to the support substrate.

[0069] When the sanding belt 300 grinding device is working, the two eccentric grinding mechanisms 700 move synchronously, driving the sanding pad 400 connected to it, as well as the support base, the sanding belt roller 200 connected to the support base, and the sanding belt 300 to perform circumferential translation to grind the board.

[0070] The rotating component 720 includes a rotating main body and an eccentric part 721, with the axis of the rotating main body and the axis of the eccentric part 721 offset by a certain distance.

[0071] The rotating main body is the rotating main body segment, and the eccentric part 721 is the eccentric shaft segment.

[0072] During connection, the rotating main body section and the drive mechanism are connected. A connecting sleeve 730 is sleeved on the outside of the eccentric part 721. The connecting sleeve 730 and the eccentric part 721 are connected by a bearing. A fixing plate 740 is fixedly connected to the bottom of the connecting sleeve 730.

[0073] The fixing plate 740, the sanding pad 400, and the support base are fixed together by screws.

[0074] The drive mechanism includes a drive motor 711 and two reducers 712. The two reducers 712 are respectively connected to two rotating parts. The two reducers 712 are connected by a synchronous connecting shaft 713 to ensure that they move synchronously. The drive motor 711 and one of the reducers 712 are connected by a transmission.

[0075] In some embodiments of this application, the drive unit includes: a first drive device 510, which is mounted on a support base and is connected to one of the sanding belt rollers 200 in a transmission connection;

[0076] The second drive unit 520 is mounted on the support base and is connected to another sanding belt roller 200 for transmission.

[0077] The first drive device 510 drives the sanding belt roller 200 connected thereto to perform a winding / unwinding motion, and the second drive device 520 drives the sanding belt roller 200 connected thereto to perform an unwinding / winding motion.

[0078] In some embodiments of this application, the two sanding belt rollers 200 have the same outer diameter, which ensures that the portion of the sanding belt 300 between the two sanding belt rollers 200 will not be in a slack state due to the difference in winding and unwinding distances during winding and unwinding operations.

[0079] In some embodiments of this application, the support base includes two base frames 110, symmetrically arranged at both ends of the sanding belt roller 200, with one end of each sanding belt roller 200 rotatably mounted to one of the base frames and the other end rotatably mounted to the other base frame.

[0080] In some embodiments of this application, the base frame includes:

[0081] The main frame section 111 is arranged vertically;

[0082] And a frame support arm 112, connected to the frame body 111, two of which are arranged opposite each other, and the first drive device 510 and the second drive device 520 are assembled on the two frame support arms 112 of one of the base frames.

[0083] The base frame also includes a bent frame body 113, which is bent and connected at one end to the main frame body 111, and at the other end extends between the connecting plate and the sanding pad 400, and is connected and fixed to the connecting plate and the sanding pad 400.

[0084] In some embodiments of this application, the first drive device 510 includes a first drive motor 711 and a first reducer 712 connected to the first drive motor 711, wherein the first reducer 712 is drively connected to one of the sanding belt rollers 200.

[0085] The second drive unit 520 includes a second drive motor 711 and a second reducer 712, the second reducer 712 being connected to another sanding belt roller 200.

[0086] The first drive motor 711 drives the first reducer 712 to rotate, which in turn drives one of the sanding belt rollers 200 to rotate for unwinding. The second drive motor 711 drives the second reducer 712 to rotate the other sanding belt roller 200 for winding.

[0087] When the sanding belt 300 on the sanding belt roller 200 connected to the first drive motor 711 has a preset distance remaining, the first drive motor 711 and the second drive motor 711 can be controlled to rotate in opposite directions, driving the sanding belt roller 200 connected to the second drive motor 711 to perform an unwinding motion and the sanding belt roller 200 connected to the first drive motor 711 to perform a winding motion, so as to realize the repeated use of the sanding belt 300 until the sanding belt 300 is damaged and then replaced, further extending the service life of the sanding belt 300.

[0088] In some embodiments of this application, the belt sander 300 grinding apparatus further includes:

[0089] The tensioning mechanism 600 presses against the sanding belt 300 between the sanding pad 400 and the sanding roller 200, and includes:

[0090] The tensioning drive component 610 is assembled onto the support base and includes a movable part;

[0091] The connecting component is rotatably connected to the moving part;

[0092] The tension roller assembly 640 is eccentric and rotatably connected at both ends to two base frames 110, and is connected to the connecting assembly.

[0093] When the tensioning drive 610 drives the moving part to move, it drives the connecting component to rotate. The connecting component drives the tensioning roller connected to it to rotate and change its position, pressing the sanding belt 300 to move towards the symmetrical line of the two sanding belt rollers 200 to tension the sanding belt 300.

[0094] The connection component includes:

[0095] The connector 620 has a first connecting portion 621 and a second connecting portion 622;

[0096] A connecting shaft is connected to the rotating connector 620 and the first connecting part 621;

[0097] The connector 620 is a connecting block, and the first connecting part 621 and the second connecting part 622 are a first connecting hole and a second connecting hole opened along the length direction of the connecting block.

[0098] The rotating connector 620 is a spherical bearing, with one end connected to the moving part and the other end connected to the connecting shaft, which is inserted into the first connecting hole.

[0099] The tensioning roller assembly 640 includes an inner tensioning roller 641 and an outer tensioning roller 642, which are rotatably connected by bearings. The inner tensioning roller 641 is eccentric and is interference-fitted with the second connecting hole after passing through the support base.

[0100] The tensioning drive component 610 is a tensioning cylinder, and the moving part is a cylinder rod, which is connected to the spherical bearing. The extension and retraction of the cylinder rod drives the connecting block to rotate, which in turn drives the tensioning inner roller 641 to rotate and press the sand belt 300 to perform tensioning.

[0101] In some embodiments of this application, the sanding pad 400 includes:

[0102] Sanded substrate 410;

[0103] And an elastic buffer 420 arranged below the sanding substrate 410;

[0104] The wear-resistant part 430 is arranged below the elastic buffer 420, and extends upward at both ends after wrapping the elastic buffer 420 to connect and fix it to the sanding substrate 410.

[0105] The adsorption channels are formed on the sanded substrate 410, the elastic buffer 420, and the wear-resistant component 430.

[0106] A first connecting hole is provided on the sanding substrate 410, a second connecting hole is provided on the elastic buffer 420, and a third gap hole is formed on the wear-resistant component 430, which is made of graphite cloth. The three components are connected to form an adsorption channel. The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. A belt sander device characterized by, Including: Supporting substrate; Two sanding belt rollers are provided and symmetrically arranged on the support base. A sanding belt, one end of which is wound onto one of the sanding belt rollers, and the other end of which is wound onto the other sanding belt roller; The sanding pad is pressed onto the sanding belt section located between the two sanding rollers; The drive unit is installed on the support base and is used to drive the two sanding belt rollers to perform winding and unwinding movements respectively, so that the sanding belt moves relative to the sanding pad to change the sanding belt portion in contact with the workpiece being sanded.

2. The belt sander of claim 1, wherein, The sanding pad is movable, and adsorption channels are formed on the sanding pad to adsorb the sanding belt and move synchronously with it.

3. The belt sander of claim 1, wherein, The sanding pad is located below and between the two sanding belt rollers, and is pressed onto the top surface of the sanding belt. The line connecting the sanding pad and the two sanding belt rollers forms a V-shaped structure.

4. The belt sander of claim 1, wherein, The drive unit includes: a first drive device, which is mounted on the support base and is connected to one of the sanding belt rollers via a drive connection; The second drive unit is mounted on the support base and is connected to another sanding belt roller drive; The first drive unit drives the sanding belt roller connected to it to perform a winding / unwinding motion, and the second drive unit drives the sanding belt roller connected to it to perform an unwinding / winding motion.

5. The belt sander of claim 1, wherein, The two sanding belt rollers have the same outer diameter.

6. The belt sander of claim 4, wherein, The support base includes: two base frames, symmetrically arranged at both ends of the sanding belt roller; Both sanding belt rollers are rotatably mounted on one of the base frames at one end and rotatably mounted on the other base frame at the other end.

7. The belt sander of claim 6, wherein The base frame includes: The main body of the frame is arranged vertically; And a frame support arm, connected to the frame body, two of which are arranged opposite each other, the first drive device and the second drive device are assembled on the two frame support arms of one of the base frames.

8. The belt sander of claim 4, wherein, The first driving device includes a first driving motor and a first reducer connected to the first driving motor. The first reducer is driven by the sanding belt roller. The second driving device has the same structure as the first driving device and is driven by another sanding belt roller.

9. The belt sander of claim 6, wherein, Including: The tensioning mechanism, pressing against the sanding belt between the sanding pad and the sanding roller, includes: The tensioning drive component is rotatably assembled onto the support base and includes a movable part; The connecting component is rotatably connected to the moving part; The tensioning roller assembly is eccentric, with both ends rotatably mounted on two base frames and connected to the connecting assembly; When the tensioning drive unit moves the moving part, it drives the connecting component to rotate. The connecting component drives the tensioning roller group connected to it to rotate and change its position, pressing the sanding belt to move towards the direction of the symmetry line of the two sanding belt rollers to tension the sanding belt.

10. The belt sander of claim 1, wherein, The sanding pad includes: Sanded substrate; And an elastic buffer element arranged below the sanding substrate; The wear-resistant part is arranged below the elastic buffer, and after wrapping the elastic buffer, its two ends extend upward to connect and fix with the sanding substrate.

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