Grinding tool tray convenient to disassemble and assemble

Abstract

The grinding tool tray convenient to disassemble and assemble comprises a mounting surface and a working surface, a gap is formed between the mounting surface and the working surface, a mounting opening is formed in the mounting surface, and a plurality of first locking blocks and a plurality of second locking blocks are arranged in the mounting opening and are sequentially arranged from top to bottom; the first locking block is obliquely arranged in the vertical direction and makes point contact with the grinding tool rotating shaft, an arc-shaped locking face is arranged at one end of the second locking block, and a threaded rotary knob is arranged at the other end of the second locking block. The friction force of the point contact mode is larger than that of surface contact and line contact, so that the connection tightness is improved, and in order to further prevent the tray from being thrown out in the using process, the arc-shaped positioning face and the arc-shaped locking face improve the clamping effect between the tray and the grinding tool rotating shaft. In addition, a threaded knob is adopted instead of a traditional nut connection mode, so that a user can apply force conveniently, the use experience is optimized, and the disassembly and assembly efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of grinding equipment, and in particular to a pallet for grinding tools that is easy to disassemble and assemble. Background Art

[0002] Abrasives are tools used for grinding, lapping and polishing. They are usually made by fixing abrasives on flexible materials such as paper, cloth, film or composite matrix with adhesives. Common ones are sandpaper and emery cloth. Some small grinders can achieve the grinding effect by equipping the grinding wheel with abrasive belts. They are lightweight, portable and easy to replace.

[0003] Generally, for the convenience of use and the user's holding, many handheld grinders have appeared on the market to facilitate the user's holding and use and optimize the user's operating feel. For pneumatic grinders, it is often necessary to supply gas to drive the internal rotating result to rotate, and then drive the external grinding head to rotate and grind. For example, there are handheld pneumatic grinders with handheld grip structures such as CN210388840U and CN204248612U in the prior art, and there are also handheld pneumatic grinders with pen-like structures such as CN211439400U (here specifically referring to the outer shell holding structure of this type of handheld grinder).

[0004] Taking a handheld pneumatic grinder with a grip structure as an example, when in use, since the objects to be grinded are somewhat small, or the position to be grinded is in a gap or corner, in order to deal with such situations, a tray structure connected to the grinding head is often used. The tray is generally provided with two sides, one side is used to connect the rotating shaft at the grinding head, and the other side is used to connect with the grinding disc, so as to grind a small area. During assembly, in order to ensure the tightness of the connection between the tray and the rotating shaft of the grinding head, a threaded connection is generally provided between the tray and the rotating shaft to improve the locking effect and reduce the phenomenon of the tray falling off during use. However Yes, because the threaded connection method not only requires a large tightening force to ensure the tightness of the combination of the two, but is also more time-consuming and laborious during assembly. Moreover, when connecting the pallets, some need to be connected only by threaded rods. Although disassembly and assembly are quick and convenient, the tightness is poor and it is easy to fall off. In addition, some pallets are set as a through-type structure, with a threaded rod running from one side to the other side, and a nut is set on the other side for locking. Although this method has a tighter thread fit and a more secure connection, this method often requires the use of external force, tools, etc., which is inconvenient to disassemble and require a large force for tightening or disassembly.

[0005] Therefore, the prior art needs to be further improved and enhanced. Utility Model Content

[0006] The present application provides a pallet for a mold that is easy to disassemble and assemble, so as to solve the problems in the prior art that the pallet is inconvenient to disassemble and assemble, the tightness is difficult to ensure, and the use effect is poor.

[0007] The technical solution adopted in this application is:

[0008] The present application provides a pallet for a mold that is easy to disassemble and assemble. The pallet includes a mounting surface and a working surface. There is a distance between the mounting surface and the working surface. The mounting surface is provided with a mounting opening. A first locking block and a second locking block are arranged inside the mounting opening. Both are provided in plurality and are arranged in sequence from top to bottom. The first locking block is arranged obliquely in the vertical direction and is in point contact with the mold rotating shaft. An arc-shaped locking surface is provided at one end of the second locking block, and a threaded knob is provided at the other end.

[0009] As a preferred embodiment of the present application, the mounting opening extends toward the working surface to form a mounting channel, and an insertion hole is provided at the bottom of the mounting channel, and the insertion hole is transitionally matched with the mold shaft.

[0010] As a preferred embodiment of the present application, a plurality of first locking openings are arranged around the mounting opening on the mounting surface, the locking openings extend obliquely into the mounting surface, and the first locking block is slidably arranged in the first locking openings.

[0011] As a preferred embodiment of the present application, an elastic buckle is provided on the side of the first locking opening, and a slot is provided on the side wall of the first locking block.

[0012] As a preferred embodiment of the present application, a pallet mounting shaft is provided between the mounting surface and the working surface, a pressing hole and a locking piece are provided on the side wall of the pallet mounting shaft, a positioning block is also provided on the mounting hole of the pallet, the positioning block is horizontally arranged and provided with an arc-shaped positioning surface, the positioning block also includes a positioning column, the positioning column is placed on the pressing hole, and the locking piece is rotatably connected to the pallet mounting shaft.

[0013] As a preferred embodiment of the present application, a first placement position is opened on the inner wall of the tray mounting shaft, the first placement position is adapted to the outer wall of the arc-shaped positioning surface, the positioning column is connected to the arc-shaped positioning surface, and the first placement position is connected to the pressing port.

[0014] As a preferred embodiment of the present application, a guiding bevel is provided on the outer end surface of the positioning column, and a driving bevel is provided on the locking member protruding into the pressing opening, and the driving bevel is in surface contact with the guiding bevel.

[0015] As a preferred embodiment of the present application, a second locking opening is also provided on the side of the tray mounting shaft, a connecting column is provided between the arc-shaped locking surface of the second locking block and the threaded knob, and the connecting column is placed in the second locking opening.

[0016] As a preferred embodiment of the present application, the inner side wall of the tray mounting shaft is further provided with a second placement position, and the second placement position is adapted to the outer side wall of the arc-shaped locking surface.

[0017] As a preferred embodiment of the present application, elastic gaskets are provided on the surfaces of the arc-shaped positioning surface and the arc-shaped locking surface.

[0018] Due to the adoption of the above technical solution, the technical effects achieved by this application are:

[0019] 1. The present application provides a pallet for a mold that is easy to disassemble and assemble. The first locking block is tilted and a point contact mode is adopted between the pallet and the mold shaft. When in use, multiple first locking blocks can clamp the mold shaft, and the point contact mode has a greater friction than surface contact and line contact, thereby improving the tightness of the connection. In addition, in order to further prevent the pallet from being thrown out during use, the present application also provides a positioning block and a second locking block, both of which are provided with an arc-shaped positioning surface and an arc-shaped locking surface, so as to improve the clamping effect between the pallet and the mold shaft through the cooperation of multiple positioning blocks and the second locking blocks; in addition, the present application adopts a threaded knob instead of the traditional nut connection method, which is also for the convenience of users to apply force, thereby optimizing the user experience and improving the efficiency of disassembly and assembly.

[0020] 2. As a preferred embodiment of the present application, the present application provides an installation channel to enable the first locking block to move therein and then abut against the mold shaft, and an elastic buckle is provided on the side of the first locking port, and a slot is provided on the side wall of the first locking block, so that when the first locking block moves into place, the position of the first locking block can be fixed by the cooperation between the elastic buckle and the slot, thereby improving the positioning effect; furthermore, by providing a structure with an insertion hole and a transition fit between the insertion hole and the mold shaft, on the one hand, it is convenient for disassembly and assembly, and on the other hand, the connection by the transition fit is more precise, which facilitates disassembly and assembly while ensuring a certain connection tightness, thereby further optimizing the use process.

[0021] 3. As a preferred embodiment of the present application, the present application provides a pressing hole and a locking piece on the side wall of the tray mounting axis to facilitate the movement of the positioning column through the pressing hole, and provides a first placement position to facilitate the accommodation and positioning of the arc-shaped positioning surface of the positioning block. Furthermore, by setting the locking piece to be rotatable and providing a driving inclined surface to cooperate with the guiding inclined surface of the outer end face of the positioning column, when positioning and fixing are required, the locking piece is rotated so that the driving inclined surface presses the positioning column during the movement, so that the positioning column moves toward the inside of the pressing hole until the locking piece reaches the pressing hole and abuts against the positioning column to achieve the positioning effect. This operation is not only convenient to operate, but also simple in structure and easy to disassemble and assemble.

[0022] 4. As a preferred embodiment of the present application, the present application further provides a second locking port on the side of the tray mounting axis. Similar to the first locking port and the positioning port, the second locking port can provide the second locking block for movement, so as to achieve the functions of locking and disassembly. Similarly, the second placement position has a similar effect to the first placement position box, and is also for positioning and placing arc structures such as arc locking surfaces. Furthermore, the second locking block is fixed by a threaded knob, which not only improves the positioning effect through the threaded fixing structure, but also the setting of the threaded knob makes it easy for the staff to apply force, further optimizes the fixing and disassembly methods, and facilitates disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present application and do not constitute an improper limitation on the present invention. In the drawings:

[0024] Figure 1 A schematic diagram of the cross-sectional structure of a mold tray that is easy to disassemble and assemble provided in the present application;

[0025] Figure 2 A schematic top view of a mold pallet that is easy to disassemble and assemble provided in the present application.

[0026] Reference numerals:

[0027] 10 mounting opening; 11 mounting surface; 12 first locking opening; 13 elastic buckle; 14 tray mounting shaft; 141 pressing opening; 142 locking member;

[0028] 20 first locking block;

[0029] 30 positioning block; 31 positioning column; 32 arc-shaped positioning surface; 33 first placement position; 34 guiding inclined surface;

[0030] 40 second locking block; 41 second placement position; 42 arc-shaped locking surface; 43 connecting column; 44 threaded knob. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0033] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0036] like Figure 1 and Figure 2 As shown, the present application provides a pallet for a mold that is easy to disassemble and assemble. The pallet includes a mounting surface 11 and a working surface. There is a spacing between the mounting surface 11 and the working surface. The mounting surface 11 is provided with a mounting opening 10. A first locking block 20, a positioning block 30 and a second locking block 40 are arranged inside the mounting opening 10. Multiple of the three are provided and are arranged in sequence from top to bottom. The first locking block 20 is inclined in the vertical direction and is in point contact with the mold shaft. The positioning block 30 is horizontally arranged and is provided with an arc-shaped positioning surface 32. One end of the second locking block 40 is provided with an arc-shaped locking surface 42, and the other end is provided with a threaded knob.

[0037] like Figure 1 and Figure 2As shown, it can be seen that the tray structure of the present application is similar to the existing tray structure, and a disc-shaped structure is presented at the bottom to stick or install sanding paper or sanding disc. A columnar structure is protruding upward at the center of the upper part of the tray, and the columnar structure is used to connect with the mold shaft of the mold, so as to realize the replacement and disassembly of the tray.

[0038] As a preferred embodiment of the present application, the mounting opening 10 extends toward the working surface to form a mounting channel, and an insertion hole is provided at the bottom of the mounting channel, and the insertion hole is transitionally matched with the mold shaft.

[0039] It can be understood that the installation channel is a long hole for installing the mold shaft, into which the mold shaft can be inserted, that is, the length of the installation channel should be adapted to the length of the mold shaft. In order to adapt to different molds, different models can be set for the structure of the tray to support and meet the structural connection; and the use of a transition fit method can not only make the connection between the insertion hole and the mold shaft more secure, but also the transition fit method allows the matching tolerance zones between the mold shaft and the insertion hole to overlap with each other, thereby ensuring secureness while facilitating disassembly.

[0040] In addition, the mounting surface 11 is provided with a plurality of first locking openings around the mounting opening 10 . The first locking openings extend obliquely into the mounting surface 11 . The first locking blocks 20 are slidably disposed in the first locking openings.

[0041] Among them, in a specific embodiment, six first locking openings are provided, and the six first locking openings are all inclined inwardly and form a spiral distribution pattern, so as to play an effect of pushing toward the center when the first locking block 20 is inserted, and the spiral distribution pattern can be spirally distributed in the direction opposite to the rotation direction of the mold shaft. While abutting, this setting can further improve the friction and pushing effect between the two, and further reduce the phenomenon of falling off during use.

[0042] Furthermore, an elastic buckle 13 is provided on the side of the first locking opening, and a locking groove is provided on the side wall of the first locking block 20 .

[0043] It is understandable that if Figure 1 and Figure 2As shown, the structure of the elastic buckle 13 can adopt a common buckle structure in the prior art, wherein a pressing piece is provided on one side and a retractable buckle is provided on the other side. In the specific use process, when the tray and the mold shaft need to be connected, the first locking block 20 is pressed down into the first locking opening, and the first locking block 20 moves inward along the path of the first locking opening. At this time, the elastic buckle 13 at the edge of the first locking opening is pushed against the outer wall of the first locking block 20. That is to say, when the structure is not used, that is, in the normal state, part of the structure of the first locking block 20 is protruding The first locking opening, and the side wall of the buckle piece against the elastic buckle 13, a spring is arranged inside the buckle piece, so that the buckle piece is in a state of outwardly pressing against the first locking block 20, with the movement of the first locking block 20 until the first locking block 20 reaches the limit position, the end of the first locking block 20 outside the first locking opening passes the elastic buckle 13, because the elastic buckle 13 is not resisted by the first locking block 20 in this state, it will continue to protrude outward and just resist the end of the first locking block 20, so as to achieve the positioning and blocking effect of the first locking block 20.

[0044] When use is finished or the tray needs to be replaced, only the pressing piece of the elastic buckle 13 is needed to relax the internal elastic piece. The structure and principle of the elastic buckle 13 can be analogous to the press-switch structure of a common elastic button or a ballpoint pen button.

[0045] Of course, in order to make the operation more convenient, an elastic member can also be provided on the inner wall of the channel of the first locking port. The elastic member can be arranged around the first locking block 20, which not only enables the staff to have a better feel when pressing the first locking block 20, but also can remove the elastic buckle 13 from the end of the first locking block 20 when unlocking is needed, so that the first locking block 20 can protrude upward under the action of the elastic force, that is, it can achieve the effect of quickly returning the first locking block 20.

[0046] As a preferred embodiment of the present application, Figure 1 and Figure 2 As shown, there is a tray mounting shaft 14 between the mounting surface 11 and the working surface, and the side wall of the tray mounting shaft 14 is provided with a pressing hole 141 and a locking member 142. The positioning block 30 also includes a positioning column 31, the positioning column 31 is placed in the pressing hole 141, and the locking member 142 is rotatably connected to the tray mounting shaft 14.

[0047] Among them, the assembly method and positioning structure between the positioning column 31 and the locking member 142 can be similar to the principle between the first locking block 20 and the elastic bayonet. The position of the positioning column 31 is positioned by the external locking member 142 to ensure that the tray is not detached during normal use of the equipment.

[0048] Furthermore, if Figure 1 and Figure 2 As shown, the inner wall of the tray installation shaft 14 is provided with a first placement position 33 , which is adapted to the outer wall of the arc-shaped positioning surface 32 , the positioning column 31 is connected to the arc-shaped positioning surface 32 , and the first placement position 33 is communicated with the pressing port 141 .

[0049] It can be understood that the outer wall of the arc-shaped positioning surface 32 referred to here is adapted to the first placement position 33, and its structure is as follows: Figure 1 and Figure 2 As shown, a group of arc grooves are provided on the inner wall of the tray mounting shaft 14. In a specific embodiment, the positioning column 31 may be provided with four arc grooves evenly spaced apart, and four arc grooves are also provided. The positions of the four arc grooves are arranged corresponding to the arc positioning surface 32 of the positioning column 31 to provide a placement space for the arc positioning surface 32. The four arc grooves surround to form a structure similar to an annular groove.

[0050] Specifically, the outer end surface of the positioning column 31 is provided with a guiding inclined surface 34 , and the locking member 142 is provided with a driving inclined surface protruding into the pressing opening 141 , and the driving inclined surface is in surface contact with the guiding inclined surface 34 .

[0051] like Figure 1 and Figure 2 As shown, the locking member 142 can be configured as a structure similar to a door-shaped member, wherein a rotating column is provided at one end and is rotatably connected to the side wall of the tray mounting shaft 14, and a protruding shaft body is also provided at the other end, and the end face of the shaft body is provided with a driving inclined surface protruding toward the pressing port 141, so that during the rotation process, the positioning block 30 structure can be pressed through the cooperation between the inclined surfaces to make it move toward the inside of the tray mounting shaft 14.

[0052] Of course, in order to ensure the normal operation of the locking member 142, a slideway should be provided on the outer side of the tray mounting shaft 14. The shape and depth of the slideway should be able to provide sufficient rotation space for the locking member 142 and not affect the protruding driving inclined surface.

[0053] As a preferred embodiment of the present application, a second locking opening is also provided on the side of the tray mounting shaft 14, and a connecting column 43 is provided between the arc-shaped locking surface 42 of the second locking block 40 and the threaded knob 44, and the connecting column 43 is placed in the second locking opening.

[0054] Among them, Figure 1 and Figure 2As shown, the inner wall of the tray mounting shaft 14 is also provided with a second placement position 41, and the second placement position 41 is adapted to the outer wall of the arc-shaped locking surface 42. The structure of the second placement position 41 is similar to that of the first placement position 33, both of which are for providing sufficient placement space; and, the structure of the arc-shaped locking surface 42 and the number of the second locking blocks 40 can also be the same as those of the positioning block 30, or two second locking blocks 40 can be arranged relative to each other, so that when locking is performed, the two arc-shaped locking surfaces 42 are relatively fixed to form a positioning ring, thereby improving the positioning effect.

[0055] In an optional embodiment, the surface of the arc-shaped positioning surface 32 and the arc-shaped locking surface 42 is provided with an elastic gasket, and the surface of the elastic gasket can be provided with a plurality of anti-slip protrusions. On the one hand, the elastic effect and flexibility of the elastic gasket can be used to wrap the mold shaft inserted into the tray to improve the positioning and locking effects. On the other hand, the setting of the elastic gasket can reduce the vibration generated during rotation and reduce the noise generation to a certain extent.

[0056] It should be noted that the pallet of the present application can be set in a variety of different models to correspond to a variety of different mold shafts. Of course, since the positioning and locking of the present application are both clamped, if the diameters of the mold shafts are not very different, the same pallet can also accommodate multiple shafts with similar diameters.

[0057] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0058] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A pallet for a mold that is easy to disassemble and assemble, characterized in that: The tray includes a mounting surface and a working surface, with a spacing between the mounting surface and the working surface. The mounting surface is provided with a mounting opening, and a first locking block and a second locking block are arranged inside the mounting opening. A plurality of first locking blocks are provided and arranged in sequence from top to bottom. The first locking block is inclined in the vertical direction and is in point contact with the mold shaft. An arc-shaped locking surface is provided at one end of the second locking block, and a threaded knob is provided at the other end.

2. A pallet for a mold that is easy to disassemble and assemble as claimed in claim 1, characterized in that: The installation opening extends toward the working surface to form an installation channel. An insertion hole is provided at the bottom of the installation channel. The insertion hole is transitionally matched with the grinding tool shaft.

3. The pallet for a mold that is easy to disassemble and assemble as claimed in claim 1, characterized in that: The mounting surface is provided with a plurality of first locking openings around the mounting opening, the locking openings obliquely extend into the mounting surface, and the first locking block is slidably arranged in the first locking openings.

4. The pallet for a mold that is easy to disassemble and assemble as claimed in claim 3, characterized in that: An elastic buckle is arranged on the side of the first locking opening, and a clamping groove is arranged on the side wall of the first locking block.

5. The easily disassembled mold tray according to claim 1, characterized in that: The tray mounting shaft is provided between the mounting surface and the working surface, and a pressing hole and a locking piece are provided on the side wall of the tray mounting shaft. A positioning block is also provided at the mounting hole of the tray, and the positioning block is horizontally arranged and provided with an arc-shaped positioning surface. The positioning block also includes a positioning column, and the positioning column is placed at the pressing hole, and the locking piece is rotatably connected to the tray mounting shaft.

6. The easily disassembled mold tray according to claim 5, characterized in that: The inner wall of the tray installation shaft is provided with a first placement position, the first placement position is adapted to the outer side wall of the arc-shaped positioning surface, the positioning column is connected to the arc-shaped positioning surface, and the first placement position is communicated with the pressing port.

7. The easily disassembled mold tray according to claim 6, characterized in that: The outer end surface of the positioning column is provided with a guiding inclined surface, and the locking member is provided with a driving inclined surface protruding into the pressing hole, and the driving inclined surface is in contact with the guiding inclined surface.

8. The easily disassembled mold tray according to claim 7, characterized in that: A second locking opening is also provided on the side of the tray installation shaft, a connecting column is provided between the arc-shaped locking surface of the second locking block and the threaded knob, and the connecting column is placed in the second locking opening.

9. The easily disassembled mold tray according to claim 8, characterized in that: The inner side wall of the tray installation shaft is also provided with a second placement position, and the second placement position is adapted to the outer side wall of the arc-shaped locking surface.

10. The easily disassembled mold tray according to claim 9, characterized in that: Elastic gaskets are arranged on the surfaces of the arc-shaped positioning surface and the arc-shaped locking surface.

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