Sleeve combination for sanding machine, sand barrel assembly and sanding machine

Abstract

The utility model provides a sleeve combination, a sanding barrel assembly and a sanding machine for a sanding machine, wherein the sleeve combination comprises a first sleeve and a second sleeve, the inner diameter of the first sleeve matches with the main shaft of the sanding machine, the first sleeve is coaxially arranged on the inner side of the second sleeve, the first sleeve and the second sleeve are interference fit or connected by a limit mechanism; the application can meet the needs of sanding barrels of various sizes and specifications, greatly saves space, is convenient for storage and transportation, and saves production materials and costs of sanding barrels.

Description

Technical Field

[0001] The present application relates to the technical field of production and processing equipment, and in particular to a sleeve assembly, a sand barrel assembly and a sanding machine for a sanding machine. Background Art

[0002] Sanding machines are commonly used equipment for sharpening various knives and tools. They are also used for grinding, deburring and cleaning ordinary small parts. Sand barrels are one of the important components of sanding machines. In the prior art, sand barrels with different diameters are often required for use according to different workpiece processing scenarios. This increases the cost of production materials on the one hand, and brings inconvenience to storage and transportation on the other. Utility Model Content

[0003] The purpose of the present application is to provide a sleeve assembly, a sanding barrel assembly and a sanding machine for a sanding machine, so as to solve the problems existing in the above-mentioned prior art.

[0004] The embodiments of the present application can be implemented through the following technical solutions:

[0005] A sleeve assembly for a sanding machine comprises a first sleeve and a second sleeve. The inner diameter of the first sleeve matches the main shaft of the sanding machine. The first sleeve is coaxially arranged on the inner side of the second sleeve. The first sleeve and the second sleeve are interference fit or connected by a limit mechanism.

[0006] Furthermore, the limiting mechanism includes a positioning protrusion and / or a positioning hole, and a fixing member matched with the positioning protrusion and / or the positioning hole.

[0007] Optionally, the positioning protrusion includes a first positioning protrusion arranged on the upper part of the first sleeve and a second positioning protrusion arranged on the upper part of the second sleeve, and the fixing member is provided with a positioning groove matching with the positioning protrusion.

[0008] Furthermore, the number of the first positioning protrusions is at least one, which is evenly distributed along the circumferential direction of the central axis of the first sleeve; the number of the second positioning protrusions is at least one, which is evenly distributed along the circumferential direction of the central axis of the second sleeve; the number of the positioning grooves is at least one, and there is a contact portion between the outer wall of each positioning protrusion and the inner wall of the positioning groove.

[0009] Optionally, the positioning holes include a first positioning hole arranged on the upper part of the first sleeve and a second positioning hole arranged on the upper part of the second sleeve, and a third positioning protrusion matching with each positioning hole is arranged on the lower part of the fixing member, and the number of the first positioning hole and the second positioning hole is at least 1.

[0010] Furthermore, the positioning protrusion is cylindrical, and the edges of the end portions of the positioning protrusion are chamfered.

[0011] Furthermore, the sleeve combination also includes a third sleeve, which is coaxially arranged on the outside of the second sleeve with the first sleeve and the second sleeve, and the outer diameter of the second sleeve is not less than the inner diameter of the third sleeve.

[0012] Furthermore, the first sleeve, the second sleeve and the third sleeve are made of elastomeric materials.

[0013] A sand barrel assembly comprises any one of the above-mentioned sleeve combinations and sandpaper matching the outer diameter of each sleeve.

[0014] A sanding machine comprises the sleeve assembly described in any one of the above items.

[0015] This application has at least the following beneficial effects:

[0016] The sleeve combination of the present application can meet the needs of sand barrels of various sizes and specifications, greatly saves space, facilitates storage and transportation, and saves production materials and costs of the sand barrels. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the prior art sanding machine;

[0018] Figure 2 This is a schematic diagram of a sleeve assembly according to a first embodiment of the present application;

[0019] Figure 3 This is a schematic diagram of a sleeve assembly according to a second embodiment of the present application;

[0020] Figure 4 This is a schematic diagram of a sleeve assembly according to a third embodiment of the present application;

[0021] Figure 5 This is a schematic diagram of a sleeve assembly according to a fourth embodiment of the present application;

[0022] Figure 6 This is a schematic diagram of the structure of a sand barrel assembly according to one embodiment of the present application;

[0023] Numbers in the figure

[0024] 100-sand barrel assembly; 101-spindle; 102-workbench; 103-machine base; 104-accommodating area; 1-fixing member; 11-positioning groove; 12-third positioning protrusion; 2-first sleeve; 21-first positioning protrusion; 22-first positioning hole; 3-second sleeve; 31-second positioning protrusion; 32-second positioning hole; DETAILED DESCRIPTION

[0025] Hereinafter, the present application will be further described based on preferred embodiments with reference to the accompanying drawings.

[0026] In addition, various components in the drawings are enlarged or reduced in size for ease of understanding, but this practice is not intended to limit the scope of protection of the present application.

[0027] Words importing the singular also include the plural and vice versa.

[0028] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the products of the embodiments of the present application are usually placed when in use, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, in the description of the present application, in order to distinguish different units, the words first, second, etc. are used in this specification, but these are not limited by the order of manufacture, nor can they be understood as indicating or implying relative importance, and their names may be different in the detailed description and claims of the present application.

[0029] The vocabulary in this specification is used to illustrate the embodiments of the present application, but is not intended to limit the present application. It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in this application can be specifically understood.

[0030] In order to better explain this application, the prior art is first introduced. Figure 1 The sanding machine shown includes a sand barrel assembly 100, a spindle 101, a workbench 102, a machine base 103 and a receiving area 104. When in use, the sand barrel assembly 100 is mounted on the spindle 101, and the spindle 101 rotates to drive the sand barrel assembly to rotate to process the workpiece. Due to the processing requirements of different workpieces, multiple sets of sand barrel assemblies of different sizes and specifications are required, which are placed in the receiving area 104 for storage when not in use. Many sand barrels of different specifications are not convenient for storage and transportation, and will also increase the cost of production materials.

[0031] Combination Figure 2-Figure 5Some embodiments of the present application are described. The present application provides a sleeve combination for a sanding machine, comprising a first sleeve 2 and a second sleeve 3, wherein the inner diameter of the first sleeve 2 matches the main shaft of the sanding machine, and the outer diameter of the first sleeve 2 is not less than the inner diameter of the second sleeve 3, that is, the first sleeve 2 can be coaxially arranged on the inner side of the second sleeve 3 by interference fit. When in use, the sleeve combination can be assembled or disassembled according to different specifications and size requirements.

[0032] Optionally, the sleeve combination can also limit the relative fixed positions of the first sleeve 2 and the second sleeve 3 when the sleeve combination is used through a limiting mechanism; specifically, in some embodiments, the limiting mechanism includes a positioning protrusion and a fixing member 1 that cooperates therewith, and in other embodiments, the limiting mechanism includes a positioning hole and a fixing member 1 that cooperates therewith.

[0033] like Figure 3 and Figure 4 In some specific embodiments of the present application shown, the limiting mechanism includes a first positioning protrusion 21 arranged on the upper part of the first sleeve 2, a second positioning protrusion 31 arranged on the upper part of the second sleeve 3, and a positioning groove 11 arranged on the fixing member 1, and the positioning groove 11 can be respectively matched with the first positioning protrusion 21 and the second positioning protrusion 31, that is, each positioning protrusion has a contact portion with the inner wall of the positioning groove 11, and the two can be interference fit to achieve a fixed connection between the fixing member 1 and the first sleeve 2 and the second sleeve 3.

[0034] Optionally, a plurality of the first positioning protrusions 21 and the second positioning protrusions 31 may be provided, such as Figure 3 As shown, a plurality of positioning protrusions on the upper part of each sleeve are evenly distributed on each sleeve along the circumferential direction of the central axis of each sleeve; the number of the positioning grooves 11 can be set to be multiple, matching the number of positioning protrusions on each sleeve.

[0035] Preferably, the number of the first positioning protrusion 21 and the second positioning protrusion 31 is set to 1 respectively; the number of the positioning groove 11 is set to 1, and the positioning groove 11 is a bar-shaped through groove, which can cooperate with the first positioning protrusion 21 and the second positioning protrusion 31 at the same time, so that the assembly and disassembly operations between the fixing member 1 and each sleeve are more convenient and the production cost is saved;

[0036] Furthermore, the first positioning protrusion 21 and the second positioning protrusion 31 are both cylindrical protrusions, and the top edges are both chamfered to facilitate assembly and disassembly.

[0037] Optionally, in some embodiments, the positioning groove 11 is a straight through groove, and in other embodiments, the positioning groove 11 may also be an arc-shaped through groove.

[0038] like Figure 5Another embodiment schematic diagram shown, which is different from some of the above embodiments in that another limiting mechanism is adopted, specifically, the limiting mechanism includes a first positioning hole 22 arranged on the upper part of the first sleeve 2, a second positioning hole 32 arranged on the upper part of the second sleeve 3, and a third positioning protrusion 12 arranged on the lower part of the fixing member 1, and the third positioning protrusion 12 cooperates with the first positioning hole 22 and the second positioning hole 32;

[0039] Furthermore, the number of the first positioning hole 22 and the second positioning hole 32 is at least one, and they are evenly distributed on each sleeve along the circumferential direction of the central axis of each sleeve, and the number of the third positioning protrusions 12 matches the number of the positioning holes.

[0040] Furthermore, the third positioning protrusion 12 is a cylindrical protrusion, and the bottom edge is chamfered to facilitate assembly and disassembly.

[0041] In some other embodiments of the present application, the limiting mechanism can also be a first positioning hole 22 and a second positioning hole 32 respectively set on the upper part of the first sleeve 2 and the second sleeve 3, and a through hole coaxial with the positioning holes is set on the fixing member 1, and the fixing member 1 can be fixedly connected to each sleeve by a positioning pin cooperating therewith; it should be noted that this limiting mechanism can also adopt other limiting methods commonly known to personnel in this field, as long as the positions of the first sleeve 2 and the second sleeve 3 are relatively fixed when they are matched.

[0042] Preferably, the fixing member 1 is a circular end plate, the diameter of which is larger than the outer diameter of the first sleeve 2, which is more conducive to limiting the relative axial displacement of the first sleeve 2 and the second sleeve 3; further, the fixing member 1 is provided with a through hole adapted to the main shaft of the sanding machine. When in use, the main shaft of the sanding machine passes through the through hole on the fixing member 1, and the sleeve assembly can be further axially limited by the fastener matched therewith; optionally, the fixing member 1 can also be other shapes such as strips and squares.

[0043] In some preferred embodiments, a third sleeve is further included, and the third sleeve is coaxial with the first and second sleeves. The outer diameter of the second sleeve 3 is not less than the inner diameter of the third sleeve, that is, the third sleeve can be arranged on the outside of the second sleeve 3 with an interference fit with the second sleeve 3; or the third sleeve can also be connected to the first sleeve and the second sleeve by setting a corresponding limiting mechanism.

[0044] Furthermore, the materials used for the first sleeve 2, the second sleeve 3 and the third sleeve are elastomeric materials to ensure that an interference fit can be achieved between the two sleeves;

[0045] The present application also provides a sand barrel assembly, such as Figure 6 As shown, it includes the sleeve combination in any of the above embodiments and sandpaper matched with the outer diameter of each sleeve.

[0046] The present application also provides a sanding machine including the sleeve assembly in any of the above embodiments. The other parts of the sanding machine can refer to the following. Figure 1 The prior art shown is not described in detail. When in use, when a sanding cylinder with a large diameter is needed, the assembled combined sanding cylinder is placed on the sanding machine as a whole, the central through hole of the first sleeve is matched with the main shaft of the sanding machine motor, and the rotation of the electrode main shaft drives the first sleeve to rotate, and then drives the second sleeve 3 to rotate, so as to process the workpiece; when a sanding cylinder with a small diameter is needed, the combined sanding cylinder is disassembled, leaving only the first sleeve 2 to rotate in coordination with the main shaft of the sanding machine motor; when not in use, the assembled combined sanding cylinder is placed in the accommodation area 104 as a whole, saving placement space.

[0047] The above is a detailed introduction to the specific implementation methods of the present application. For those skilled in the art, several improvements and modifications may be made to the present application without departing from the principles of the present application. These improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A sleeve assembly for a sanding machine, characterized in that: It comprises a first sleeve and a second sleeve. The inner diameter of the first sleeve matches with the main shaft of the sanding machine. The first sleeve is coaxially arranged on the inner side of the second sleeve. The first sleeve and the second sleeve are interference fit or connected by a limiting mechanism.

2. The sleeve assembly for a sanding machine according to claim 1, characterized in that: The limiting mechanism includes a positioning protrusion and / or a positioning hole, and a fixing member matched with the positioning protrusion and / or the positioning hole.

3. The sleeve assembly for a sanding machine according to claim 2, characterized in that: The positioning protrusions include a first positioning protrusion arranged on the upper part of the first sleeve and a second positioning protrusion arranged on the upper part of the second sleeve, and the fixing member is provided with a positioning groove matched with the positioning protrusions.

4. The sleeve assembly for a sanding machine according to claim 3, characterized in that: The number of the first positioning protrusions is at least one, which is evenly distributed along the circumferential direction of the central axis of the first sleeve; the number of the second positioning protrusions is at least one, which is evenly distributed along the circumferential direction of the central axis of the second sleeve; the number of the positioning grooves is at least one, and there is a contact portion between the outer wall of each positioning protrusion and the inner wall of the positioning groove.

5. The sleeve assembly for a sanding machine according to claim 2, characterized in that: The positioning holes include a first positioning hole arranged on the upper part of the first sleeve and a second positioning hole arranged on the upper part of the second sleeve. The lower part of the fixing member is provided with a third positioning protrusion matching with each positioning hole. The number of the first positioning hole and the second positioning hole is at least 1.

6. The sleeve assembly for a sanding machine according to claim 2, characterized in that: The positioning protrusion is cylindrical, and the edges of the end portions of the positioning protrusion are chamfered.

7. The sleeve assembly for a sanding machine according to claim 1, characterized in that: It also includes a third sleeve, which is coaxially arranged on the outside of the second sleeve with the first sleeve and the second sleeve. The third sleeve is interference fit with the second sleeve or connected through a limiting mechanism.

8. The sleeve assembly for a sanding machine according to claim 7, characterized in that: The materials of the first sleeve, the second sleeve and the third sleeve are elastomeric materials.

9. A sand cylinder assembly, characterized in that: The invention comprises the sleeve combination as described in any one of claims 1 to 8 and sandpaper matched with the outer diameter of each sleeve.

10. A sanding machine, characterized in that: A sleeve assembly comprising any one of claims 1-8.

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