Polishing machine capable of adjusting modes

Abstract

A mode-adjustable grinding machine comprises a shell, an eccentric shaft and a grinding disc, the eccentric shaft is mounted in the shell and driven by a driving mechanism to rotate, the grinding disc is mounted on the eccentric shaft and driven by the eccentric shaft to vibrate, and the eccentric shaft comprises a driving end connected with the driving mechanism and a transmission end eccentrically arranged relative to the driving end. The outer side of the transmission end is rotationally connected with a transmission part which is concentric with the transmission end and connected with the grinding disc, the outer side of the transmission part is in coupling connection with a mode adjusting part which is concentric with the driving end and rotationally connected into the shell, and an adjusting switch for limiting rotation of the mode adjusting part is installed on the shell. A plurality of uniformly arranged clamping grooves are formed in the mode adjusting part; the adjusting switch comprises a locking piece rotationally connected to the shell, a clamping part arranged on the locking piece and matched with the clamping groove in a clamped mode, an elastic piece driving the locking piece to rotate so that the clamping part can be clamped into the clamping groove, and an adjusting piece movably installed on the outer side of the locking piece and driving the locking piece to rotate so that the clamping part can be separated from the clamping groove.

Description

Technical Field

[0001] The utility model relates to a grinder, in particular to a grinder capable of performing mode adjustment. Background Art

[0002] A wall grinder is a tool that replaces the traditional method of workers using sandpaper to grind walls and objects, in order to achieve the purpose of smoothness, dust-freeness, and protect the physical and mental health of workers, optimize the working environment, improve work efficiency, and enhance the quality of decoration. Wall grinding is divided into dusty grinding and dust-free grinding. Machines for grinding walls are collectively referred to as wall grinders, also known as "wall grinders", "wall grinders", "putty grinders", "wall grinding machines", "big white grinders", "dust-absorbing sanding machines", and "sandpaper machines". The names vary from place to place, and the standard name is wall grinder. In order to enable the grinding disc to grind the wall at different speeds and expand the scope of use of the grinder, a speed control switch is usually set on the grinder to achieve this.

[0003] The existing mode adjustment switch is usually a knob-type switch. The internal structure of the mode adjustment switch of this structure is relatively complex and the failure rate is relatively high. When using the mode adjustment switch, it is also necessary to determine the rotation direction of the mode adjustment switch, which is relatively troublesome. At the same time, due to the complex internal structure of the knob-type switch, it is not easy to repair when a failure occurs. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art and provides a grinder capable of mode adjustment. The mode adjustment switch for controlling the grinder is set as a sliding switch.

[0005] The utility model adopts a technical solution to solve its technical problems: the mode-adjustable grinder comprises a shell, an eccentric shaft installed in the shell and driven to rotate by a driving mechanism, and a grinding disc installed on the eccentric shaft and driven to vibrate by the eccentric shaft, the eccentric shaft comprises a driving end connected to the driving mechanism and a transmission end eccentrically arranged relative to the driving end, a transmission part rotatably connected to the outer side of the transmission end and concentrically arranged with the transmission end and connected to the grinding disc, a mode adjustment part concentrically arranged with the driving end and rotatably connected to the outer side of the transmission part is coupled to the mode adjustment part in the shell, an adjustment switch for limiting the rotation of the mode adjustment part is installed on the shell, a plurality of evenly arranged slots are opened on the mode adjustment part, the mode switch comprises a locking member rotatably connected to the shell, a clamping part arranged on the locking member and engaged with the slot, an elastic member driving the locking member to rotate so that the clamping part is clamped into the slot, and an adjustment member movably installed on the outer side of the locking member and driving the locking member to rotate so that the clamping part is disengaged from the slot.

[0006] For further improvement, the locking member includes a locking end for installing the clamping part, an adjusting end provided with an adjusting member, and a rotating end connecting the locking end and the adjusting end, and the inner side of the rotating end is rotatably connected with a positioning rotating shaft installed on the housing. The positioning rotating shaft and the rotating end can make the locking member rotate stably on the housing, thereby stably controlling the working mode of the grinder.

[0007] Further improvement, the locking member is installed on the outer side of the housing, a channel hole corresponding to the clamping part is opened on the housing, a positioning part located on the outer side of the locking member is installed on the housing, the upper end of the positioning rotation shaft is connected to the inner side of the positioning part, an adjustment groove connected to the adjustment end is opened on the positioning part, and the adjustment member is slidably connected in the adjustment groove. The positioning part can further stabilize the locking member on the housing for rotation.

[0008] Further improvement, the adjustment end includes a driving guide part connected to the rotating end at one end and a limiting fixing part connected to the other end of the driving guide part, the driving guide part is an inclined surface arranged on the outside of the locking member, the driving guide part is gradually inclined outward from the rotating end to the limiting fixing end, and the limiting fixing part is a limiting surface arranged on the outside of the locking member to limit the spontaneous movement of the adjusting member toward the driving guide part. The driving guide part and the limiting fixing part can enable the adjusting member to smoothly control the clamping part to be away from the clamping slot and keep the clamping part away from the clamping slot.

[0009] Further improvement, the clamping part is located on the inner wall of the locking member and protrudes inward, and the clamping part includes a guide surface arranged on the clamping part for assisting the clamping part to enter the clamping slot, and the guide surface is arranged on the outer side of the clamping part in an inclined surface. The guide surface is arranged on the protruding clamping part to assist the clamping part to be smoothly inserted into the clamping slot.

[0010] Further improvement, the elastic member is installed between the positioning part and the locking member, one end of the elastic member is in contact with the outer side of the locking end, and the other end of the elastic member is in contact with the inner side of the positioning part. The elastic member is in contact with the outer side of the locking end to ensure that the clamping part can smoothly enter the clamping groove after the adjusting part leaves the limiting fixing part.

[0011] For further improvement, a limiting groove is provided on the inner wall of the positioning part to prevent the elastic member from being separated from the outer side of the locking end. The limiting groove can ensure that the elastic member will not be out of contact with the locking member, resulting in the clamping part being unable to be smoothly inserted into the clamping groove.

[0012] Further improvement, the adjustment member includes an adjustment rod which is arranged on the locking member and controls the rotation of the locking member by sliding on the locking member, so that the clamping part is away from the clamping slot, and a sliding cover which is slidably installed on the positioning part and drives the adjustment rod to slide. The sliding cover and the sliding rod can conveniently drive the clamping part to disengage from the clamping slot.

[0013] Further improvement, the outer side of the positioning part is provided with a limiting wall extending upward and downward, and the inner side of the sliding cover is provided with a sliding part extending inward and cooperating with the limiting wall so that the sliding cover is installed on the positioning part and can slide on the positioning part. The limiting wall and the sliding part can ensure that the sliding cover can be stably installed on the positioning part and can also slide smoothly on the positioning part.

[0014] Further improvement, the transmission end is fixedly installed with a bearing, the transmission part is installed on the bearing, the transmission part is annularly hollow, the outer surface of the transmission part is provided with uniformly distributed external teeth, the mode adjustment part is annularly hollow, the inner diameter of the mode adjustment part is larger than the outer diameter of the transmission part, and the inner wall of the mode adjustment part is provided with internal teeth meshing with the external teeth. The meshing internal teeth and external teeth can ensure that the transmission part can stably drive the grinding disc to vibrate.

[0015] The beneficial effects of the utility model are as follows: the utility model sets the mode adjustment switch as a sliding switch with a simple internal structure.

[0016] The failure rate of the device is reduced, and at the same time the grinder is easier to control, thus improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 An exploded view of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model without the adjustment switch;

[0020] Figure 4 This is a schematic diagram of the structure of the utility model without the shell;

[0021] Figure 5 It is a schematic diagram of the structure of the transmission part, the mode adjustment part and the locking part;

[0022] Figure 6 is a schematic diagram of the structure of the locking member;

[0023] Figure 7 It is a structural schematic diagram of the sliding part;

[0024] Figure 8 It is a structural schematic diagram of the positioning part;

[0025] Fig. 9 It is a structural schematic diagram of the eccentric shaft.

[0026] Explanation of the accompanying drawings: housing 1, eccentric shaft 2, grinding disc 3, driving end 4, transmission end 5, transmission part 6, mode adjustment part 7, adjustment switch 8, slot 9, locking member 10, clamping part 11, elastic member 12, adjusting member 13, locking end 14, adjusting end 15, rotating end 16, positioning rotating shaft 17, channel hole 18, positioning part 19, adjusting slot 20, driving guide part 21, limiting fixing part 22, guide surface 23, limiting slot 24, adjusting rod 25, sliding cover 26, limiting wall 27, sliding part 28, external clamping teeth 29, internal clamping teeth 30. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the drawings and specific embodiments of the specification. A person of ordinary skill in the art will be able to implement the utility model based on these descriptions. In addition, the embodiments of the utility model involved in the following description are usually only embodiments of a part of the utility model, rather than all of the embodiments. Therefore, based on the embodiments in the utility model, all other embodiments obtained by a person of ordinary skill in the art without making creative work should fall within the scope of protection of the utility model.

[0028] Reference Figure 1 , 2 , 4, 5: A grinding machine capable of mode adjustment comprises a housing 1, an eccentric shaft 2 installed in the housing 1 and driven to rotate by a driving mechanism, and a grinding disc 3 installed on the eccentric shaft 2 and driven to vibrate by the eccentric shaft 2, the eccentric shaft 2 comprises a driving end 4 connected to the driving mechanism and a transmission end 5 eccentrically arranged relative to the driving end 4, a transmission part 6 arranged concentrically with the transmission end 5 and connected to the grinding disc 3 is rotatably connected to the outer side of the transmission end 5, and a transmission part 6 is coupled to the outer side of the transmission part 6 and is arranged concentrically with the driving end 4 and rotatably connected to the housing 1, an adjusting switch 8 for limiting the rotation of the mode adjusting portion 7 is installed on the housing 1, a plurality of evenly arranged card slots 9 are opened on the mode adjusting portion 7, and the adjusting switch 8 includes a locking member 10 rotatably connected to the housing 1, a clamping portion 11 arranged on the locking member 10 and engaged with the card slot 9, an elastic member 12 driving the locking member 10 to rotate so that the clamping portion 11 is clamped into the card slot 9, and an adjusting member 13 movably installed on the outer side of the locking member 10 and driving the locking member 10 to rotate so that the clamping portion 11 is separated from the card slot 9.

[0029] Reference Figure 6 , 78: The locking member 10 includes a locking end 14 on which the clamping portion 11 is installed, an adjusting end 15 on which the adjusting member 13 is provided, and a rotating end 16 connecting the locking end 14 and the adjusting end 15, and a positioning rotating shaft 17 installed on the housing 1 is fixedly connected to the inner side of the rotating end 16. Specifically, in this embodiment, the locking member 1 can be a long strip-shaped object, wherein the rotating end 16 is arranged in the middle part of the locking member 10 and protrudes outward in an arc shape, and a hollow through hole is provided at the arc-shaped protrusion, and the positioning rotating shaft 17 passes through the through hole and is installed in the through hole, and the diameter of the positioning rotating shaft 17 matches the aperture of the through hole, refer to the attached Figure 6 In this embodiment, the right end of the rotating end 16 is set as the adjusting end 15, the locking member 10 is installed on the outer side of the housing 1, and a channel hole 18 corresponding to the clamping portion 11 is provided on the housing 1. A positioning portion 19 located on the outer side of the locking member 10 is installed on the housing 1. The upper end of the positioning rotating shaft 17 is rotatably connected to the inner side of the positioning portion 19, and the lower end of the positioning rotating shaft 17 is rotatably connected to the outer surface of the housing 1. The positioning portion 19 is provided with an adjusting groove 20 connected to the adjusting end 15, and the adjusting member 13 is slidably connected in the adjusting groove 20. The adjusting member 13 includes a locking member 10 and a locking member 13 connected to the locking member 10. An adjusting rod 25 that controls the rotation of the locking member 10 by sliding on the locking member 10 so that the engaging portion 11 moves away from or enters the engaging slot 9, and a sliding cover 26 that is slidably installed on the positioning portion 19 and drives the adjusting rod 25 to slide. In order to enable the sliding cover 26 to be stably installed on the positioning portion 19 and slide on the positioning portion 19, a limiting wall 27 extending upward and downward is provided on the outer side of the positioning portion 19, and a sliding portion 28 extending inward and cooperating with the limiting wall 27 to enable the sliding cover 26 to be installed on the positioning portion 19 and to slide on the positioning portion 19 is provided on the inner side of the sliding cover 26.

[0030] The adjusting end 15 includes a driving guide portion 21 connected to the rotating end 16 at one end and a limiting fixing portion 22 connected to the other end of the driving guide portion 21. The driving guide portion 21 is an inclined surface arranged on the outer side of the rear end of the locking member 10. The limiting fixing portion 22 is a limiting surface arranged on the outer side of the locking member 10 to limit the adjusting member 13 from spontaneously moving toward the driving guide portion 21. Specifically, when the locking end 14 is close to the mode adjusting portion 7, the side of the driving guide portion 21 close to the rotating end 16 is relatively close to the side away from the rotating end. The side of the rotating end 16 will be closer to the mode adjustment part 7, so the driving guide part 21 will present an inclined state, and the adjusting rod 25 is located at the connection between the rotating end 16 and the driving guide part 21 at this time. When it is necessary to manipulate the adjusting rod 25 to make the locking end 14 away from the mode adjustment part 7, that is, the clamping part 10 is out of the clamping slot 9, the adjusting rod 25 can be driven away from the connection between the rotating end 16 and the driving guide part 21 by manipulating the sliding cover 26, wherein an opening is provided on the inner wall of the sliding cover 26, and the adjusting rod 25 is fixedly installed in the opening. Figure 1: The outer periphery of the housing 1 is designed as a circular ring with the driving end 4 of the eccentric shaft 2 as the center, the positioning portion 19 is also an arc-shaped shell arranged on the housing 1, and the limiting wall 27 is arranged around the arc-shaped outer surface of the positioning portion 19, and the sliding cover 26 is an arc-shaped shell installed on the outer surface of the positioning portion 19. The sliding cover 26 slidably installed on the positioning portion 19 slides with the limiting wall 27 as a track, so when the sliding cover 26 drives the adjusting rod 25 to slide, it slides in an arc-shaped path with the driving end 4 as the center, so when the adjusting rod 25 moves, the adjusting rod 25 will give a driving guide The pressure of the part 21 toward the center direction of the driving end 4 is applied, so that the side of the driving guide part 21 away from the rotating end 16 gradually approaches the mode adjustment part 7 until the clamping part 11 is completely disengaged from the clamping slot 9, and in order to keep the clamping part 11 in a state of being disengaged from the clamping slot 9, the adjusting rod 25 will continue to move until it reaches the side of the limiting fixing part 22 away from the rotating end 16, wherein the limiting fixing part 22 can be an arc surface arranged on the outer side of the front end of the adjusting end 5, and the arc surface can be an arc surface arranged concentrically with the driving end, and it is only necessary to enable the adjusting rod 25 to be stably limited on the limiting surface of the limiting fixing part 22, refer to the attached Figure 6 In this embodiment, the limiting fixing portion 22 is set as a rectangular structure. Specifically, when the locking end 14 is close to the mode adjustment portion 7, the driving guide portion 21 is gradually tilted outward from the rotating end 16 to one end of the limiting fixing portion 22, and the outer surface of the connection between the limiting fixing portion 22 and the driving guide portion 21 presents an outer angle, so when the clamping portion 11 is completely disengaged from the clamping slot 9 and maintained in the disengaged state, the limiting fixing portion 22 will be closer to the mode adjustment portion 7, so that the limiting surface of the limiting fixing portion 22 is gradually tilted outward from the end away from the driving guide portion 21. Figure 6 In this embodiment, the left side of the rotating end 16 is set as the locking end 14, wherein the clamping portion 11 is located on the inner wall of the locking member 10 and protrudes inwardly. Since the left and right sides of the card slot 9 are planes, in order to allow the clamping portion 11 to be smoothly inserted into the card slot 9, the clamping portion 11 includes a guide surface 23 arranged on the clamping portion 11 for assisting the clamping portion 11 to enter the card slot 9. The guide surface 23 is arranged on the outer side of the clamping portion 11 and is inclined. The clamping portion 11 is integrally formed on the locking member 10. Specifically, refer to the attached Figure 6: In this embodiment, the guide surface 23 is arranged on the right side of the clamping part 11 and gradually extends to the left side. When the grinder is working, when the clamping part 11 is not inserted into the slot 9, the mode adjustment part 7 vibrates together with the transmission part 6 and rotates relative to the transmission part 6. After the adjustment member 13 is driven close to the rotating end 16 by controlling the sliding cover 26, the elastic member 12 arranged on the locking member 10 will drive the clamping part 11 to approach the mode adjustment part 7 until it contacts the mode adjustment part 7, and the mode adjustment part 7 rotates relative to the transmission part 6. During the rotation process, one side of a certain slot 9 will contact the guide surface 23 on the clamping part 11, and after the guide surface arranged in an inclined surface contacts one side of the slot 9, the mode adjustment part 7 will be rotated counterclockwise at a small angle under the elastic force of the elastic member 12 to make the clamping part 11 enter the slot 9.

[0031] Reference Figure 3 : Among them, the elastic member 12 is installed between the positioning member and the locking member 10, one end of the elastic member 12 is in contact with the outer side of the locking end 14, and the other end of the elastic member 12 is in contact with the inner side of the positioning portion 19. In order to ensure that the elastic member 12 can maintain contact with the locking member 10, a limiting groove 24 is provided on the inner wall of the positioning portion 19 to prevent the elastic member 12 from detaching from the outer side of the positioning portion 19. In this embodiment, the elastic member 12 can be a compression spring arranged in a spiral shape.

[0032] A bearing is fixedly installed outside the transmission part 6. The transmission part 6 is hollow in an annular shape. The outer surface of the transmission part 6 is provided with evenly distributed external teeth 29. The mode adjustment part 7 is hollow in an annular shape. The inner diameter of the mode adjustment part 7 is larger than the transmission part 6. The inner wall of the mode adjustment part 7 is provided with internal teeth 30 that mesh with the external teeth 29.

[0033] Certain words are used in the specification and claims of this utility model to refer to specific products. It should be understood by those with ordinary knowledge in the art that manufacturers may refer to the same components by different names. This document does not intend to distinguish between components that have the same function but different names. In the following specification and patent scope, the words "comprise", "have" and "include" are open-ended words and should be interpreted as "including but not limited to...".

[0034] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications are also considered to be within the protection scope of the present utility model.

Claims

1. A grinding machine capable of mode adjustment, comprising a housing (1), an eccentric shaft (2) installed in the housing (1) and driven to rotate by a driving mechanism, and a grinding disc (3) installed on the eccentric shaft (2) and driven to vibrate by the eccentric shaft (2), the eccentric shaft (2) comprising a driving end (4) connected to the driving mechanism and a transmission end (5) eccentrically arranged relative to the driving end (4), the transmission end (5) being rotatably connected to a transmission part (6) coaxially arranged with the transmission end (5) and connected to the grinding disc (3), the transmission part (6) being coupled to a mode adjustment part (7) coaxially arranged with the driving end (4) and rotatably connected in the housing (1), the housing (1) being provided with an adjustment switch (8) for limiting the rotation of the mode adjustment part (7), wherein: The mode adjustment portion (7) is provided with a plurality of evenly arranged slots (9), and the adjustment switch (8) comprises a locking member (10) rotatably connected to the housing (1), a clamping portion (11) disposed on the locking member (10) and engaging with the slot (9), an elastic member (12) driving the locking member (10) to rotate so that the clamping portion (11) is clamped into the slot (9), and an adjustment member (13) movably mounted on the outside of the locking member (10) and driving the locking member (10) to rotate so that the clamping portion (11) is disengaged from the slot (9).

2. A mode-adjustable grinding machine according to claim 1, characterized in that: The locking member (10) comprises a locking end (14) on which a clamping portion (11) is mounted, an adjusting end (15) on which an adjusting member (13) is disposed, and a rotating end (16) connecting the locking end (14) and the adjusting end (15), wherein the rotating end (16) is rotatably connected to an inner side thereof with a positioning rotating shaft (17) mounted on the housing (1).

3. A mode-adjustable grinding machine according to claim 2, characterized in that: The locking member (10) is mounted on the outside of the housing (1); a passage hole (18) corresponding to the clamping portion (11) is provided on the housing (1); a positioning portion (19) located on the outside of the locking member (10) is installed on the housing (1); the upper end of the positioning rotating shaft (17) is rotatably connected to the inside of the positioning portion (19); the positioning portion (19) is provided with an adjustment groove (20) connected to the adjustment end (15); and the adjustment member (13) is slidably connected in the adjustment groove (20).

4. A mode-adjustable grinding machine according to claim 3, characterized in that: The adjusting end (15) comprises a driving guide portion (21) having one end connected to the rotating end (16) and a limiting fixing portion connected to the other end of the driving guide portion (21); the driving guide portion (21) is an inclined surface arranged on the outside of the locking member (10); the driving guide portion (21) is gradually inclined outward from the rotating end (16) to the limiting fixing end; and the limiting fixing portion is a limiting surface arranged on the outside of the locking member (10) for limiting the adjusting member (13) from spontaneously moving toward the driving guide portion (21).

5. A mode-adjustable grinding machine according to claim 3, characterized in that: The clamping portion (11) is located on the inner wall of the locking member (10) and protrudes inwardly, and the clamping portion (11) comprises a guide surface (23) arranged on the clamping portion (11) for assisting the clamping portion (11) to enter the clamping groove (9), and the guide surface (23) is arranged on the outer side of the clamping portion (11) in the form of an inclined surface.

6. A mode-adjustable grinding machine according to claim 3, characterized in that: The elastic member (12) is installed between the positioning portion (19) and the locking member (10), one end of the elastic member (12) is in contact with the outer side surface of the locking end (14), and the other end of the elastic member (12) is in contact with the inner side surface of the positioning portion (19).

7. A mode-adjustable grinding machine according to claim 3, characterized in that: A limiting groove (24) is provided on the inner wall of the positioning portion (19) for preventing the elastic member (12) from detaching from the outer side surface of the locking end (14).

8. The mode-adjustable grinding machine according to claim 6, characterized in that: The adjusting member (13) comprises an adjusting rod (25) which is arranged on the locking member (10) and controls the locking member (10) to rotate by sliding on the locking member (10) so as to move the clamping portion (11) away from or into the clamping slot (9), and a sliding cover (26) which is slidably mounted on the positioning portion (19) and drives the adjusting rod (25) to slide.

9. A mode-adjustable grinding machine according to claim 8, characterized in that: The outer side of the positioning portion (19) is provided with a limiting wall (27) extending upward and downward, and the inner side of the sliding cover (26) is provided with a sliding portion (28) extending inward and cooperating with the limiting wall (27) so that the sliding cover (26) is mounted on the positioning portion (19) and can slide on the positioning portion (19).

10. The mode-adjustable grinding machine according to claim 1, characterized in that: A bearing is fixedly mounted on the outside of the transmission end (5), the transmission part (6) is mounted on the bearing, the transmission part (6) is hollow in an annular shape, the outer surface of the transmission part (6) is provided with evenly distributed external clamping teeth (29), the mode adjustment part (7) is hollow in an annular shape, the inner diameter of the mode adjustment part (7) is larger than the outer diameter of the transmission part (6), and the inner wall of the mode adjustment part (7) is provided with internal clamping teeth (30) meshing with the external clamping teeth (29).

Images