Abrasive belt changing device and abrasive belt machine

Abstract

The application relates to the technical field of polishing equipment, and discloses a sand belt sleeve changing device and a sand belt machine. The sand belt sleeve changing device comprises a sand belt layering jig and a sand belt lifting module. A sleeving area is arranged above the top of the sand belt layering jig, and a plurality of sand belt layering areas are arranged on the outer circumferential surface of the sand belt layering jig in the vertical direction. The interval space below each sand belt layering area is a lifting work area. The sand belt lifting module is arranged on one side of the sand belt layering jig and comprises a driving assembly and an executing assembly. The executing assembly is drivingly connected with the driving assembly, and the executing assembly is respectively provided with a lifting supporting tooth corresponding to each lifting work area. The sand belt sleeve changing device provided by the embodiment realizes automatic sleeve changing of the sand belt, thereby saving the labor cost, reducing the labor intensity, improving the work efficiency and being safer and more reliable.

Description

Technical Field

[0001] This application belongs to the technical field of grinding equipment, specifically relating to a belt changing device and a belt sander. Background Technology

[0002] Belt grinding is a new type of processing method that is easy to operate, low in cost, has high power utilization, produces high surface quality of ground workpieces, and generates low grinding heat. A belt sander is a widely used belt grinding tool that generally uses a motor to drive a wheel to move the sanding belt to achieve the grinding purpose.

[0003] Currently, when using belt sanders, the performance of the abrasive belt will decline after a period of use. At this time, it is necessary to replace the abrasive belt in a timely manner to ensure the stability of subsequent grinding processes. Because the abrasive belt itself is a flexible strip structure without a fixed shape, installing the abrasive belt usually requires manual placement onto the abrasive belt fixture, which is time-consuming and labor-intensive. Furthermore, the operator needs to reach under the grinding fixture to work during the placement process, posing a safety hazard. Utility Model Content

[0004] The purpose of this application is to provide a belt sander replacement device and a belt sander to solve the problems of time-consuming, labor-intensive, and safety hazards associated with manual belt replacement in existing belt sanders.

[0005] To achieve the above objectives, the first aspect of this application provides a belt changing device, comprising:

[0006] A sanding belt stacking fixture, wherein a fitting area is provided above the top of the sanding belt stacking fixture, and a plurality of sanding belt stacking areas are arranged at vertical intervals on the outer circumference of the sanding belt stacking fixture, and the space below each sanding belt stacking area is a lifting operation area; and

[0007] A belt lifting module is arranged on one side of the belt stacking fixture and includes a drive component and an execution component. The execution component is drivenly connected to the drive component, and the execution component is provided with lifting teeth for each lifting work area.

[0008] The execution component has a lifting state and a non-lifting state. In the lifting state, the drive component drives the execution component to insert the lifting tooth into the corresponding lifting work area and drive it to move upward. In the non-lifting state, the drive component drives the execution component to reset the lifting tooth and exit the corresponding lifting work area.

[0009] As a further improvement to the above technical solution:

[0010] In some embodiments, the belt lifting module further includes a base, the driving assembly includes a horizontal driving module and a vertical driving module, the horizontal driving module is disposed on the base, the vertical driving module is disposed at the driving end of the horizontal driving module, and the execution assembly is disposed at the driving end of the vertical driving module.

[0011] In some embodiments, the lateral drive module includes a stand and a lateral drive mechanism disposed on the stand, the stand being disposed on the base;

[0012] The vertical drive module is provided in two sets and symmetrically arranged on both sides of the sand belt stacked fixture, and each vertical drive module is correspondingly provided with the execution component;

[0013] The vertical drive module includes a movable frame and a vertical drive mechanism disposed on the movable frame. The movable frame is hinged to one side of the upright and driven by the horizontal drive mechanism. The execution component includes a lifting plate, which is slidably disposed on the movable frame and driven by the vertical drive mechanism. The lifting plate is provided with a plurality of lifting teeth.

[0014] In some embodiments, the base is provided with a jig receiving position, and the sanding belt stacked jig is disposed on the base and located in the jig receiving position;

[0015] The fixture receiving position is provided with a quick-release structure that can be quickly connected to the sanding belt stacked fixture.

[0016] In some embodiments, the abrasive belt stack fixture includes:

[0017] Fixture base;

[0018] A jig frame, vertically mounted on the jig base, the jig frame including at least three side edges, each side edge having a supporting column; and

[0019] An elastic tensioning component is disposed within the fixture frame, and the tensioning force of the elastic tensioning component is directed toward the outer periphery of the frame.

[0020] In some embodiments, the elastic tensioning assembly includes a tensioning plate and an elastic support member;

[0021] The tensioning plate is movably arranged on both adjacent sides of the fixture frame. The side of the tensioning plate facing the inside of the fixture frame is supported on the fixture frame by an elastic support member. The elastic force applied to the tensioning plate by the elastic support member is the tensioning force.

[0022] In some embodiments, the tensioning plate is provided with a limiting plate on the side facing the inside of the fixture frame, and the limiting plate is provided with a guide groove, the length direction of the guide groove being consistent with the elastic force direction of the elastic support member;

[0023] The elastic tensioning assembly also includes a limiting pin, which passes through the guide groove and is connected to the fixture frame.

[0024] In some embodiments, the side of the tensioning plate facing away from the inside of the fixture frame is provided with a sanding belt baffle corresponding to each of the lifting work areas.

[0025] In some embodiments, the belt changing device further includes a belt cutting module disposed on one side of the belt lifting module, the belt cutting module including a belt cutting blade extending in a horizontal direction.

[0026] The second aspect of this application provides a belt sander, including a processing spindle and a belt changing device according to the first aspect above, wherein the processing spindle is provided with a belt sanding fixture for fitting the belt.

[0027] Compared with the prior art, the belt sander and belt sander provided in this application have at least the following advantages:

[0028] The belt changing device provided in this application has several belt stacking areas set on the outer periphery of the belt stacking fixture, so that several belts (corresponding to the belt stacking areas) can be fitted on the outer periphery of the belt stacking fixture from bottom to top for later use. A fitting area is also set above the top of the belt stacking fixture, and a belt lifting module is arranged on one side of the belt stacking fixture. Thus, when belt fitting is required, the belt grinding fixture on the belt sander that needs belt fitting can be moved to this fitting area. The drive component in the belt lifting module drives the execution component to switch to the lifting state. The drive component then drives the execution component to insert the lifting teeth into the corresponding lifting work area and drive them upward. When all lifting teeth rise a preset stroke, all belts fitted on the belt stacking fixture can be simultaneously lifted upward a preset stroke. At this time, the belt at the top of the belt stacking fixture will detach from the belt stacking fixture and be directly fitted onto the belt grinding fixture on the belt sander, completing the belt fitting. Therefore, the abrasive belt replacement device provided in this application realizes automatic replacement of abrasive belts, thereby saving labor costs, reducing labor intensity, improving work efficiency, and making it safer and more reliable.

[0029] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0031] Figure 1 This is a three-dimensional structural diagram of a belt changing device provided in an embodiment of this application;

[0032] Figure 2 for Figure 1 A three-dimensional structural diagram of the abrasive belt stacking fixture in the abrasive belt changing device shown;

[0033] Figure 3 This application provides a schematic diagram of the structure of the sanding belt stacking fixture in the disassembly / assembly state of the sanding belt changing device in the embodiment of the application.

[0034] Figure 4 for Figure 1 A magnified view of a portion of point A in the middle;

[0035] Figure 5 for Figure 2 A magnified view of a portion of point B in the middle;

[0036] Figure 6 This application provides a schematic diagram of the structure of a belt sander after the replacement of the machining spindle and the sanding belt.

[0037] Figure 7 A schematic diagram of a state when the machining spindle and the abrasive belt changing device in a belt sander are changing abrasive belts, as provided in an embodiment of this application;

[0038] Figure 8 This application provides a schematic diagram of the state of the belt sander when the sander belt lifting module is reset after the sander belt replacement device completes the sander belt replacement in an embodiment of the present application.

[0039] Figure 9 This is a schematic diagram showing the state after the sanding belt lifting module has been reset in a belt sander after the sanding belt replacement device has completed the sanding belt replacement, as provided in an embodiment of this application.

[0040] Explanation of reference numerals in the attached figures

[0041] 10. Sanding belt;

[0042] 100. Belt changing device; 110. Belt stacking fixture; 110a. Belt stacking area; 110b. Lifting work area; 111. Fixture base; 1110. Handle; 112. Fixture frame; 1120. Support column; 1121. Support beam; 113. Elastic tensioning assembly; 1130. Tensioning plate; 1130a. Belt baffle; 1131. Elastic support component; 1132. Limiting plate; 1133. Guide groove; 1134. Limiting pin; 120. Belt lifting... Lifting module; 121, Drive assembly; 1210, Lateral drive module; 1210a, Frame; 1210b, Lateral drive mechanism; 1211, Vertical drive module; 1211a, Movable frame; 1211b, Vertical drive mechanism; 1211c, Swing arm; 122, Actuation assembly; 1220, Lifting plate; 1221, Lifting support tooth; 123, Base; 1230, Fixture receiving position; 1231, Fixed rail; 130, Belt sander cutting module; 131, Belt sander cutting blade;

[0043] 200. Machining the spindle;

[0044] 300. Belt sanding fixture. Detailed Implementation

[0045] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0046] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0047] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides a belt changing device 100, which can be applied to a belt sander for automatic changing of the belt 10 of the belt sander fixture 300 on the belt sander.

[0048] The abrasive belt replacement device 100 provided in this embodiment includes an abrasive belt stacking fixture 110 and an abrasive belt lifting module 120; a fitting area is provided above the top of the abrasive belt stacking fixture 110, and a number of abrasive belt stacking areas 110a are arranged at intervals along the vertical direction on the outer peripheral surface of the abrasive belt stacking fixture 110, and the space below each abrasive belt stacking area 110a is a lifting operation area 110b.

[0049] It is understandable that each sanding belt stacking area 110a can be fitted with a corresponding sanding belt 10, so that multiple spare sanding belts 10 can be installed on a sanding belt stacking fixture 110.

[0050] The belt lifting module 120 is arranged on one side of the belt stacking fixture 110 and includes a drive component 121 and an execution component 122. The execution component 122 is driven to connect with the drive component 121. The execution component 122 is provided with lifting teeth 1221 for each lifting work area 110b.

[0051] In this embodiment, the execution component 122 has a lifting state and a non-lifting state. In the lifting state, the drive component 121 drives the execution component 122 to insert the lifting support tooth 1221 into the corresponding lifting working area 110b and drive it upward. In this way, the lifting support tooth 1221 can support the lower side of the sanding belt 10 and move it upward together, so that all the sanding belts 10 on the sanding belt stacking fixture 110 move upward. As a result, the sanding belt 10 at the top will be the first to detach from the sanding belt stacking fixture 110 and enter the set area to be fitted onto the sanding belt grinding fixture 300, realizing the automatic feeding and set of sanding belts 10 (e.g., Figure 6 and Figure 7 (As shown); In the non-lifting state, the drive component 121 drives the execution component 122 to reset the lifting support tooth 1221 and exit the corresponding lifting work area 110b (as shown). Figure 8 and Figure 9 (As shown). In this way, the vertical drive stroke of the drive component 121 can be reduced, resulting in a smaller and more compact design.

[0052] When the belt sanding device 100 provided in this embodiment needs to be fitted with sanding belts 10, the belt sanding fixture 300 on the belt sander that needs to be fitted with sanding belts 10 can be moved to the fitting area. The drive component 121 in the belt sanding lifting module 120 drives the execution component 122 to switch to the lifting state. In this way, the drive component 121 drives the execution component 122 to insert the lifting teeth 1221 into the corresponding lifting work area 110b and drive them to move upward. When all the lifting teeth 1221 rises a preset stroke, all the sanding belts 10 fitted on the belt sanding fixture 110 can be lifted upward synchronously by a preset stroke. At this time, the sanding belt 10 located at the top of the belt sanding fixture 110 will be detached from the belt sanding fixture 110 and directly fitted onto the belt sanding fixture 300 on the belt sander, thus completing the fitting of the sanding belts 10.

[0053] Thus, the sanding belt replacement device 100 provided in this embodiment realizes the automatic replacement of the sanding belt 10, thereby saving labor costs, reducing manual labor intensity, improving work efficiency, and making it safer and more reliable.

[0054] To more clearly describe the technical solution of the application, the following is a detailed description of the sand belt replacement device 100 provided in this embodiment:

[0055] Please see Figure 1 , Figure 2 and Figure 3The aforementioned belt lifting module 120 also includes a base 123, and the drive assembly 121 includes a horizontal drive module 1210 and a vertical drive module 1211. The horizontal drive module 1210 is disposed on the base 123, the vertical drive module 1211 is disposed on the drive end of the horizontal drive module 1210, and the execution assembly 122 is disposed on the drive end of the vertical drive module 1211.

[0056] Specifically, the lateral drive module 1210 includes a stand 1210a and a lateral drive mechanism 1210b disposed on the stand 1210a, and the stand 1210a is disposed on the base 123. Two sets of vertical drive modules 1211 are provided and symmetrically arranged on both sides of the sanding belt stacking fixture 110, and each vertical drive module 1211 is provided with an execution component 122.

[0057] Please refer to the following: Figure 4 The vertical drive module 1211 includes a movable frame 1211a and a vertical drive mechanism 1211b disposed on the movable frame 1211a. The movable frame 1211a is hinged to one side of the upright frame 1210a and drivenly connected to the horizontal drive mechanism 1210b. The execution component 122 includes a lifting plate 1220, which is slidably disposed on the movable frame 1211a and drivenly connected to the vertical drive mechanism 1211b. The lifting plate 1220 is provided with a plurality of lifting teeth 1221, which are arranged in layers along the vertical direction.

[0058] Thus, the lateral drive mechanism 1210b can drive the movable frames 1211a on both sides of the upright frame 1210a to expand or retract synchronously relative to the upright frame 1210a; alternatively, two lateral drive mechanisms 1210b can be arranged to drive the corresponding movable frames 1211a to expand or retract synchronously relative to the upright frame 1210a. After the movable frame 1211a expands, the lifting plate 1220 also moves away from the sanding belt stacking fixture 110. At this time, the lifting teeth 1221 on the lifting plate 1220 retract from the corresponding lifting work area 110b. When the movable frame 1211a expands or retracts, the movable frame 1211a drives the lifting plate 1220 closer to the sanding belt stacking fixture 110, so that the lifting teeth 1221 on the lifting plate 1220 insert into the corresponding lifting work area 110b. The vertical drive mechanism 1211b can drive the lifting plate 1220 to move up and down as a whole, so as to drive the lifting teeth 1221 to move up and down synchronously.

[0059] In some embodiments, the lateral drive mechanism 1210b may be selected as a first cylinder, which is movably mounted on the upright 1210a (e.g., sliding). The piston rod end and cylinder body end of the first cylinder are respectively hinged to the swing arms 1211c extending from the two movable frames 1211a. Thus, the extension and retraction of the first cylinder drives the two movable frames 1211a to swing relative to the upright 1210a, thereby achieving the synchronous expansion and contraction of the two movable frames 1211a. The vertical drive mechanism 1211b may be selected as a second cylinder, which is mounted on the movable frame 1211a and arranged in the vertical direction. The piston rod end of the second cylinder is connected to the lifting plate 1220.

[0060] Optionally, the lateral drive mechanism 1210b and the vertical drive mechanism 1211b may also be selected as hydraulic cylinders, electric cylinders, electric push rods, or motor lead screw mechanisms, etc. It should be understood that the above are merely illustrative examples and are not intended to limit the scope of protection of this application.

[0061] In some embodiments, two sets of vertical drive modules 1211 are provided, symmetrically arranged on both sides of the abrasive belt stacking fixture 110. Similarly, two sets of horizontal drive modules 1210 can be provided, symmetrically arranged on both sides of the abrasive belt stacking fixture 110 and drivenly connected to the vertical drive modules 1211 on the same side. The horizontal drive modules 1210 can drive the vertical drive modules 1211 to slide laterally, so that the horizontal drive modules 1210 can move closer to or further away from the abrasive belt stacking fixture 110. The horizontal drive module 1210 includes a stand 1210a and a horizontal drive mechanism 1210b, and the vertical drive module 1211 includes a movable frame 1211a and a vertical drive mechanism 1211b. The stand 1210a is fixed on the base 123, and the movable frame 1211a is slidably disposed on the base 123 and is not directly connected to the stand 1210a. Under the drive of the horizontal drive mechanism 1210b, the movable frame 1211a can slide relative to the base 123 to move closer to or further away from the sanding belt stacking fixture 110.

[0062] Furthermore, the base 123 is provided with a jig receiving position 1230, and the sanding belt stacking jig 110 is disposed on the base 123 and located in the jig receiving position 1230; wherein, the jig receiving position 1230 is provided with a quick-release structure that is quick-releasely connected to the sanding belt stacking jig 110.

[0063] Please see Figure 3 In some embodiments, the quick-release structure consists of two fixed rails 1231 aligned on the base 123. The fixture base 111 of the sanding belt stack fixture 110 is slidably engaged with the fixed rails 1231, facilitating quick disassembly and installation of the sanding belt stack fixture 110 by pushing and pulling (e.g., Figure 3(The direction indicated by the middle arrow v is the push-pull direction). This allows for the configuration of multiple sanding belt stacking fixtures 110 for quick replacement of the sanding belt changing device 100, ensuring uninterrupted material feeding and guaranteeing the continuity of processing.

[0064] In other embodiments, the quick-release structure consists of multiple spinning cylinder clamps (not shown) disposed on the base 123. The multiple spinning cylinder clamps are distributed around the fixture receiving position 1230 to spin-fix the sanding belt stack fixture 110, while facilitating the quick assembly and disassembly of the sanding belt stack fixture 110. Of course, mechanical quick clamps (not shown) can also be used to replace the spinning cylinder clamps.

[0065] In some other embodiments, the quick-release structure is an electromagnetic adsorption device (not shown) disposed on the base 123, which can selectively adsorb and fix the sanding belt stack jig 110 by energizing / de-energizing.

[0066] Please see Figure 2 and Figure 3 The aforementioned sanding belt stacking fixture 110 includes a fixture base 111, a fixture frame 112, and an elastic tensioning assembly 113. The fixture base 111 is detachably mounted on a base 123 (using a quick-release structure for quick-release connection, as described above). The fixture frame 112 is vertically mounted on the fixture base 111 and includes at least three side edges. Each side edge has a supporting column 1120, and the supporting column 1120 has a laterally arranged supporting beam 1121. In some embodiments, the fixture frame 112 may have four, five, or other numbers of side edges; this embodiment does not limit the number of side edges. It is understood that the smooth outer circumferential surface of the supporting column 1120, after contacting the inner side of the sanding belt 10, reduces the friction between the sanding belt 10 and the fixture frame 112 during vertical movement.

[0067] In this embodiment, the jig frame 112 is a triangular prism-shaped frame structure, which is viewed from above as a triangular frame. Thus, the belt sanding jig 300 is also set in a triangular prism shape, and its cross-sectional shape and size are consistent with the cross-sectional shape and size of the belt sanding jig 110, so as to facilitate smooth mounting of the sanding belt 10 after it is lifted.

[0068] Furthermore, a handle 1110 is provided at one end of the fixture base 111 to facilitate the pulling, disassembly, and installation of the fixture base 111.

[0069] The elastic tensioning component 113 is disposed within the jig frame 112, and the tensioning force of the elastic tensioning component 113 is directed towards the outer periphery of the jig frame 112. That is to say, the elastic tensioning component 113 has an outward expansion tensioning tendency, which can provide tensioning force to the sanding belt 10 mounted on the sanding belt stacking jig 110, so that the sanding belt 10 can be kept in the corresponding sanding belt stacking area 110a, preventing the sanding belt 10 from sliding down and occupying the lifting working area 110b.

[0070] It should also be noted that when the execution component 122 is in the lifting state, the drive component 121 drives the execution component 122 to insert the lifting tooth 1221 into the corresponding lifting work area 110b. At the same time, the lifting tooth 1221 can push against the elastic tension component 113. The direction of this pushing force can overcome the tension force provided by the elastic tension component 113, thereby releasing the tension state of all sanding belts 10 on the sanding belt stacking fixture 110, thus ensuring that the lifting tooth 1221 can smoothly support the corresponding sanding belt 10 to rise for the preset stroke.

[0071] Please refer to the following: Figure 5 In this embodiment, the elastic tensioning assembly 113 includes a tensioning plate 1130 and an elastic support member 1131. The tensioning plates 1130 are movably disposed on both adjacent sides of the jig frame 112. The side of the tensioning plates 1130 facing the interior of the jig frame 112 is supported on the support beam 1121 of the jig frame 112 by the elastic support member 1131. The elastic force applied by the elastic support member 1131 to the tensioning plates 1130 is the tensioning force.

[0072] Optionally, the elastic support 1131 may be a compression spring, torsion spring, elastic sheet, or gas spring, etc. It should be understood that the above are merely illustrative examples and are not intended to limit the scope of protection of this application.

[0073] Please see Figure 3 and Figure 5 The tensioning plate 1130 has a limiting plate 1132 on the side facing the inside of the fixture frame 112. The limiting plate 1132 has a guide groove 1133, the length direction of which is consistent with the elastic force direction of the elastic support member 1131. The elastic tensioning assembly 113 also includes a limiting pin 1134, which passes through the guide groove 1133 and is connected to the fixture frame 112.

[0074] Furthermore, the side of the tensioning plate 1130 facing away from the inside of the jig frame 112 is provided with a sanding belt baffle 1130a corresponding to each lifting work area 110b, so as to vertically position the sanding belt 10 mounted on the jig frame 112 and prevent the sanding belt 10 from sliding down.

[0075] Please see Figure 1 and Figure 3In some embodiments, the belt changing device 100 further includes a belt cutting module 130 disposed on one side of the belt lifting module 120, the belt cutting module 130 including a belt cutting blade 131 extending in a horizontal direction. The belt cutting blade 131 can be used to cut the old belts used on the belt grinding fixture 300, thereby realizing the replacement of the belt 10 in one step in the belt changing device 100.

[0076] Please see Figure 6 Furthermore, this embodiment also provides a belt sander. The belt sander includes a machining spindle 200 and a belt sanding device 100 as described above. The machining spindle 200 is equipped with a belt sanding fixture 300 for mounting the belt sander 10. The machining spindle 200 has multiple degrees of freedom to adapt to the sanding of different workpiece surfaces.

[0077] Optionally, the machining spindle 200 can be a CNC machining spindle.

[0078] Please see Figure 6 , Figure 7 , Figure 8 and Figure 9 The steps for replacing the sanding belt 10 in this embodiment are as follows:

[0079] Step 1: Remove the old sandpaper;

[0080] The machining spindle 200 drives the belt sanding fixture 300 to move above the belt cutting module 130. By moving the machining spindle 200 up and down, the old sanding belt is cut by the belt cutting blade 131, thereby separating the old sanding belt from the belt sanding fixture 300.

[0081] Step 2: Replace with a new sanding belt;

[0082] The machining spindle 200 drives the belt sanding fixture 300 to the set area above the belt stacked fixture 110, so that the belt sanding fixture 300 is aligned with the belt stacked fixture 110 and comes into close contact.

[0083] like Figures 6 to 7 As shown, the control of the transverse drive mechanism 1210b drives the movable frames 1211a on both sides to move closer to the sanding belt stacking fixture 110, so that the lifting teeth 1221 on the lifting plate 1220 are inserted into the corresponding lifting work area 110b. At this time, the lifting teeth 1221 will push against the tension plate 1130 to release the tension of the sanding belt 10 on the sanding belt stacking fixture 110.

[0084] like Figure 7As shown, the vertical drive mechanism 1211b controls the corresponding lifting plate 1220 to rise by a preset stroke (the preset stroke can be the sum of the width of the sanding belt 10 and the width of the lifting work area 110b), so that the sanding belt 10 located on the uppermost layer is automatically pushed upward into the sanding belt grinding fixture 300 by the lifting support teeth 1221.

[0085] like Figures 8 to 9 As shown, the horizontal drive mechanism 1210b drives the movable frames 1211a on both sides to unfold, so that the lifting support teeth 1221 exit the lifting working area 110b on the sanding belt stacking fixture 110. At this time, the elastic tensioning component 113 resets to tension and limit the remaining sanding belts 10 on the sanding belt stacking fixture 110, and the vertical drive mechanism 1211b resets synchronously to complete the automatic replacement operation of the sanding belts 10.

[0086] Compared with existing technologies, the belt sander provided in this embodiment has the following advantages:

[0087] 1. The structure is more compact, and the sanding belt replacement device 100 can be integrated into the workbench of the sanding machine, which makes it easy to disassemble and replace the sanding belt 10.

[0088] 2. Automatic replacement of sanding belt 10 is achieved. The sanding belt replacement can be completed directly inside the machine, replacing the manual sanding belt replacement work, improving the sanding belt replacement efficiency, and thus improving the overall processing efficiency.

[0089] 3. The sanding belt stacking fixture 110 is installed on the base 123 in a quick-release manner, which enables the sanding belt stacking fixture 110 to be quickly replaced, reducing equipment downtime, ensuring continuous work, and improving equipment efficiency.

[0090] It should be noted that, in this application, unless otherwise stated, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" used to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0091] In the description of this application, it should be understood that 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0092] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0093] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0094] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A belt changing device, characterized in that, include: A sanding belt stacking fixture (110) has a fitting area above its top, and several sanding belt stacking areas (110a) are spaced vertically on the outer periphery of the fixture (110). The space below each sanding belt stacking area (110a) is a lifting operation area (110b). A belt lifting module (120) is arranged on one side of the belt stacking fixture (110) and includes a drive component (121) and an execution component (122). The execution component (122) is drivenly connected to the drive component (121), and the execution component (122) is provided with lifting teeth (1221) for each lifting work area (110b). The execution component (122) has a lifting state and a non-lifting state. In the lifting state, the drive component (121) drives the execution component (122) to insert the lifting tooth (1221) into the corresponding lifting work area (110b) and drive it to move upward. In the non-lifting state, the drive component (121) drives the execution component (122) to reset the lifting tooth (1221) and exit the corresponding lifting work area (110b).

2. The belt changing device according to claim 1, characterized in that, The belt lifting module (120) also includes a base (123). The drive assembly (121) includes a horizontal drive module (1210) and a vertical drive module (1211). The horizontal drive module (1210) is disposed on the base (123). The vertical drive module (1211) is disposed on the drive end of the horizontal drive module (1210). The execution assembly (122) is disposed on the drive end of the vertical drive module (1211).

3. The belt changing device according to claim 2, characterized in that, The lateral drive module (1210) includes a stand (1210a) and a lateral drive mechanism (1210b) disposed on the stand (1210a), wherein the stand (1210a) is disposed on the base (123); The vertical drive module (1211) is provided in two sets and symmetrically arranged on both sides of the sand belt stacking fixture (110), and each vertical drive module (1211) is correspondingly provided with the execution component (122). The vertical drive module (1211) includes a movable frame (1211a) and a vertical drive mechanism (1211b) disposed on the movable frame (1211a). The movable frame (1211a) is hinged to the corresponding side of the upright frame (1210a) and drivenly connected to the horizontal drive mechanism (1210b). The execution component (122) includes a lifting plate (1220). The lifting plate (1220) is slidably disposed on the movable frame (1211a) and drivenly connected to the vertical drive mechanism (1211b). The lifting plate (1220) is provided with a plurality of lifting teeth (1221).

4. The belt changing device according to claim 2, characterized in that, The base (123) is provided with a jig receiving position (1230), and the sanding belt stacked jig (110) is disposed on the base (123) and located in the jig receiving position (1230). The fixture receiving position (1230) is provided with a quick-release structure that can be quickly connected to the sanding belt stacked fixture (110).

5. The belt changing device according to any one of claims 1-4, characterized in that, The abrasive belt stacked fixture (110) includes: Fixture base (111); A jig frame (112) is vertically mounted on the jig base (111). The jig frame (112) includes at least three side edges, each with a supporting column (1120). An elastic tensioning component (113) is disposed inside the jig frame (112), and the tensioning force of the elastic tensioning component (113) is directed toward the outer periphery of the jig frame (112).

6. The belt changing device according to claim 5, characterized in that, The elastic expansion assembly (113) includes an expansion plate (1130) and an elastic support member (1131). The jig frame (112) is movably provided with tension plates (1130) on both adjacent sides. The side of the tension plates (1130) facing the inside of the jig frame (112) is supported on the jig frame (112) by elastic support members (1131). The elastic force applied by the elastic support members (1131) to the tension plates (1130) is the tensioning force.

7. The belt changing device according to claim 6, characterized in that, The tensioning plate (1130) has a limiting plate (1132) on one side facing the inside of the jig frame (112). The limiting plate (1132) has a guide groove (1133), and the length direction of the guide groove (1133) is consistent with the elastic force direction of the elastic support (1131). The elastic tensioning assembly (113) also includes a limiting pin (1134), which passes through the guide groove (1133) and is connected to the fixture frame (112).

8. The belt changing device according to claim 6, characterized in that, The tensioning plate (1130) is provided with a sanding belt baffle (1130a) on the side facing away from the inside of the jig frame (112) for each of the lifting work areas (110b).

9. The belt changing device according to claim 1, characterized in that, The belt changing device (100) further includes a belt cutting module (130) disposed on one side of the belt lifting module (120), the belt cutting module (130) including a belt cutting blade (131) extending in the horizontal direction.

10. A belt sander, characterized in that, It includes a machining spindle (200) and a belt changing device (100) according to any one of claims 1-9, wherein the machining spindle (200) is provided with a belt grinding fixture (300) for fitting a belt (10).

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