Locking device of polishing and grinding machine

Abstract

The utility model discloses a locking device of a polishing and grinding machine, which comprises a driving base, at least one group of grinding device is arranged on the driving base, a dust collection device is arranged on one side of the grinding device, the grinding device comprises a protective cover and a grinding wheel, the protective cover is fixedly arranged on the driving base, and a locking assembly is arranged on the driving base. The locking assembly comprises a limiting rod and a fastener, one end of the limiting rod is connected to the driving base, the other end of the limiting rod is inserted into the grinding wheel, a mounting hole is formed in the side, away from the driving base, of the limiting rod, and the fastener is screwed into the mounting hole and extrudes the end of the limiting rod to be clamped to form limiting clamping connection with the grinding wheel. The utility model aims to provide the locking device of the polishing and grinding machine, which can prevent sundries from winding equipment to cause jamming, and meanwhile, improves the attractive degree of the whole equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of grinders, in particular to a locking device for a polishing grinder. Background Art

[0002] The full name of the grinder is reciprocating electric polishing grinder. It is widely used in the finishing and surface polishing of the mold industry. It is a substitute for similar pneumatic products. There are certain safety risks in the use of the grinder. Except for the maintenance staff who can use it skillfully, no one else is allowed to use it. The grinding disc of the traditional polishing grinder is usually installed by bolts, which are connected to the rotating rod of the grinder to form a linkage operation. However, there are still certain problems and defects in the use process. After the two sides are installed with bolts, the nuts or nuts will be exposed, resulting in the entanglement of debris and the jamming of the equipment, which poses certain safety hazards. Utility Model Content

[0003] The utility model aims to provide a locking device for a polishing and grinding machine, which can prevent debris from winding around the equipment and causing it to get stuck, while improving the aesthetics of the overall equipment.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a locking device of a polishing and grinding machine, comprising a driving base, at least one group of grinding devices is arranged on the driving base, a dust suction device is installed on one side of the grinding device, the grinding device comprises a protective cover and a grinding wheel, the protective cover is fixedly installed on the driving base, a locking assembly is arranged on the driving base, the locking assembly comprises a limit rod and a fastener, one end of the limit rod is connected to the driving base, and the other end is plugged and arranged on the grinding wheel, a mounting hole is provided on the side of the limit rod away from the driving base, the fastener is screwed into the mounting hole and squeezes the end of the limit rod to clamp it with the grinding wheel to form a limit clamping connection, and a clearance opening connected to the outer wall of the limit rod is provided on the mounting hole.

[0005] Preferably, a plug-in slot is provided on the grinding wheel, and a mounting portion and a plug-in portion are sequentially provided on the limiting rod, one end of the mounting portion is rotatably connected to the driving base, the plug-in portion is connected to one end of the mounting portion and is plugged into the plug-in slot, the plug-in portion is provided with positioning protrusions in a ring array, and a corresponding positioning groove is provided on the plug-in slot.

[0006] Preferably, a card interface is provided on the side of the plug-in slot away from the driving base, the diameter of the card interface is larger than the opening diameter of the plug-in slot, and the plug-in portion is provided with two symmetrically arranged fixing flanges, and the two fixing flanges are arranged in a semicircular shape.

[0007] Preferably, a clearance groove is provided at the connection between the mounting portion and the plug-in portion, and the clearance groove is arranged in a ring shape.

[0008] Preferably, the fastener comprises a fixing bolt, a stud and a nut are provided on the fixing bolt, the stud and the nut are screwed into the mounting hole, a mounting groove is provided on the mounting hole, and the nut is tightly arranged in the mounting groove.

[0009] Preferably, a rounded surface is provided on the edge of the plug-in portion away from the driving base.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the grinding wheel forms a plug-in fit with the plug-in part through the plug-in groove, and a limit is formed by the clamping connection of the positioning protrusion and the positioning groove, and when the plug-in part enters the plug-in groove, the fixed flange on the plug-in part shrinks inward through the clearance opening, and releases the tightening force after extending out of the plug-in groove, clamps the fixed flange on the clamping interface, and is tightened in the mounting hole on the plug-in part by bolts, so as to prevent the fixed flange from shrinking inward and causing the grinding wheel to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 This is an exploded view of the structure of the locking assembly and the grinding wheel of the utility model;

[0013] Figure 3 It is a schematic diagram of the overall structure of the limit rod of the utility model.

[0014] In the figure: 1. driving base; 2. grinding device; 3. dust suction device; 4. protective cover; 5. grinding wheel; 8. locking assembly; 9. limit rod; 10. fastener; 11. mounting hole; 12. clearance opening; 13. plug-in slot; 14. mounting part; 15. plug-in part; 16. positioning convex part; 17. positioning groove; 18. card interface; 19. fixing flange; 20. clearance groove; 21. fixing bolt; 23. stud; 24. nut; 25. mounting slot; 26. chamfered surface. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Example: As attached Figures 1 to 3The locking device of a polishing and grinding machine shown in the figure comprises a driving base 1 (with a rotating motor installed inside for controlling the rotation of a grinding wheel 5), at least one set of grinding devices 2 is arranged on the driving base 1, a dust collecting device 3 is installed on one side of the grinding device 2, the grinding device 2 comprises a protective cover 4 and a grinding wheel 5, the protective cover 4 is fixedly installed on the driving base 1, a locking assembly 8 is arranged on the driving base 1, the locking assembly 8 comprises a limiting rod 9 and a fastener 10, one end of the limiting rod 9 is connected to the driving base 1, and the other end is plugged and arranged on the grinding wheel 5, the limiting rod 9 is provided with a mounting hole 11 on the side away from the driving base 1, and the fastener 10 is screwed on The end of the limiting rod 9 is squeezed into the mounting hole 11 and clamped to form a limiting clamping connection with the grinding wheel 5. The mounting hole 11 is provided with a clearance opening 12 which is connected to the outer wall of the limiting rod 9. The grinding wheel 5 is plugged into the plug-in groove 13 and the plug-in part 15 is plugged together, and the positioning protrusion 16 and the positioning groove 17 are clamped to form a limit. When the plug-in part 15 enters the plug-in groove 13, the fixing flange 19 on the plug-in part 15 shrinks inwardly through the clearance opening 12, and releases the tightening force after extending out of the plug-in groove 13, clamps the fixing flange 19 to the clamping interface 18, and is tightened into the mounting hole 11 on the plug-in part 15 with bolts to prevent the fixing flange 19 from shrinking inwardly and causing the grinding wheel 5 to fall off.

[0017] As attached Figure 1 As shown, the grinding wheel 5 is provided with a plug-in slot 13, and the limiting rod 9 is provided with a mounting portion 14 and a plug-in portion 15 (an integrated structure) in sequence, one end of the mounting portion 14 is rotatably connected to the driving base 1, the plug-in portion 15 is connected to one end of the mounting portion 14 and is plugged into the plug-in slot 13, and the plug-in portion 15 is provided with positioning protrusions 16 in a ring array (an integrated structure, specifically four are provided), and the plug-in slot 13 is provided with corresponding positioning grooves 17 (corresponding to the number of the positioning protrusions 16).

[0018] As attached Figure 1 As shown, a card interface 18 is provided on the side of the plug-in slot 13 away from the driving base 1, and the diameter of the card interface 18 is larger than the opening diameter of the plug-in slot 13. The plug-in portion 15 is provided with two symmetrically arranged fixing flanges 19 (an integrated structure), and the two fixing flanges 19 are arranged in a semicircular shape, and the fixing flanges 19 are used to form a limited card connection with the card interface 18.

[0019] As attached Figure 1 As shown, a clearance groove 20 is provided at the connection between the mounting portion 14 and the plug-in portion 15. The clearance groove 20 is arranged in an annular shape and is used to release the pressure of the plug-in portion 15 when it is contracted to avoid excessive electricity.

[0020] As attached Figure 1As shown, the fastener 10 includes a fixing bolt 21, on which a stud 23 and a nut 24 (an integrated structure) are provided. The stud 23 is connected to the nut 24 and is screwed into the mounting hole 11. A mounting groove 25 is provided on the mounting hole 11, and the nut 24 is tightly arranged in the mounting groove 25. The fixing bolt 21 forms a locking limit for the plug-in portion to prevent the plug-in portion 15 from slipping off.

[0021] As attached Figure 1 As shown, a chamfered surface 26 is provided on the edge of the plug-in portion 15 away from the driving base 1 to facilitate the plug-in operation of the plug-in portion 15 and avoid the situation where the structure is stuck.

[0022] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

Claims

1. A locking device for a polishing and grinding machine, comprising a driving base (1), on which at least one set of grinding devices (2) is arranged, and a dust collecting device (3) is installed on one side of the grinding device (2), characterized in that: The grinding device (2) comprises a protective cover (4) and a grinding wheel (5), wherein the protective cover (4) is fixedly mounted on a driving base (1), and a locking assembly (8) is arranged on the driving base (1). The locking assembly (8) comprises a limiting rod (9) and a fastener (10), wherein one end of the limiting rod (9) is connected to the driving base (1), and the other end is plugged and arranged on the grinding wheel (5), and a mounting hole (11) is provided on a side of the limiting rod (9) away from the driving base (1), and the fastener (10) is screwed into the mounting hole (11) and squeezes the end of the limiting rod (9) to clamp it on the grinding wheel (5) to form a limiting clamping connection, and a clearance opening (12) is provided on the mounting hole (11) and is connected to the outer wall of the limiting rod (9).

2. The locking device of a polishing and grinding machine according to claim 1, characterized in that: The grinding wheel (5) is provided with a plug-in slot (13), the limiting rod (9) is provided with a mounting portion (14) and a plug-in portion (15) in sequence, one end of the mounting portion (14) is rotatably connected to the driving base (1), the plug-in portion (15) is connected to one end of the mounting portion (14) and is plugged into the plug-in slot (13), the plug-in portion (15) is provided with positioning convex portions (16) in a ring array, and the plug-in slot (13) is provided with corresponding positioning grooves (17).

3. The locking device of a polishing and grinding machine according to claim 2, characterized in that: A card interface (18) is provided on a side of the plug-in slot (13) away from the driving base (1), the diameter of the card interface (18) is larger than the opening diameter of the plug-in slot (13), and the plug-in portion (15) is provided with two symmetrically arranged fixing flanges (19), and the two fixing flanges (19) are arranged in a semicircular shape.

4. The locking device of a polishing and grinding machine according to claim 2, characterized in that: A clearance groove (20) is provided at the connection between the mounting portion (14) and the plug-in portion (15), and the clearance groove (20) is arranged in a ring shape.

5. The locking device of a polishing and grinding machine according to claim 1, characterized in that: The fastener (10) comprises a fixing bolt (21), the fixing bolt (21) is provided with a stud (23) and a nut (24), the stud (23) is connected with the nut (24) and is screwed into the mounting hole (11), the mounting hole (11) is provided with a mounting groove (25), and the nut (24) is tightly arranged in the mounting groove (25).

6. The locking device of a polishing and grinding machine according to claim 4, characterized in that: A chamfered surface (26) is provided on the edge of the plug-in portion (15) on the side away from the driving base (1).

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