Locking mechanism for head of grinding and polishing machine

Abstract

The utility model relates to the technical field of grinding and polishing machines, in particular to a locking mechanism for the head of a grinding and polishing machine, which comprises a rotating seat rotationally sleeved at the top of a stand column, a locking component pushed by a driving component is arranged in the rotating seat, and the driving component is arranged on the rotating seat; the locking assembly comprises a pressing plate, a plurality of locking shafts are arranged on the pressing plate, and the locking shafts are distributed on the two sides of the stand column; the locking shaft is provided with a chamfer used for locking the stand column. The rotating seat can be locked on the stand column through the locking shafts, the structure is simple, the occupied space is saved, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of grinders and polishers, in particular to a locking mechanism for the head of a grinder and polisher. Background Art

[0002] Grinding and polishing machines are used in many industries. They are often used to prepare metal samples, polymer samples, ceramic samples or similar samples for further experiments. Known existing grinding and polishing machines such as Chinese utility model patent CN214237601U are multi-purpose grinding and polishing machines that increase the control of sample grinding amount. It discloses a head that can be rotatably arranged on a supporting arm, and the supporting arm is provided with a grinding and polishing head locking device, which is used to connect the head and clamp the head on the supporting arm.

[0003] The above-mentioned grinding and polishing head locking device includes a swing frame body and a clamping C-shaped open curved arm sleeved on the head of the supporting vertical arm; the clamping C-shaped open curved arm has a clamping curved arm movable end and a clamping curved arm root; the swing frame body has a swing rotation hole and a swing drive hole, a clamping drive cylinder is installed in the swing drive hole, a clamping guide sleeve is vertically provided in the swing rotation hole, a clamping shaft is provided in the clamping guide sleeve, a clamping swing arm is hinged between the clamping drive cylinder and the clamping shaft, a clamping eccentric portion is provided at the lower part of the clamping shaft, a clamping process notch is provided at the clamping eccentric portion, and a clamping process notch is provided at the clamping In the process notch, the clamping eccentric part is hinged with one end of the clamping force arm; the other end of the clamping force arm is connected to the root of the clamping bent arm; one end of the clamping force arm passes through the movable end of the clamping bent arm and is exposed; the clamping C-shaped open bent arm is held on the supporting vertical arm by the movable end of the clamping bent arm and the root of the clamping bent arm; the outer wall of the clamping eccentric part is in rotational pressure contact with the side of the movable end of the clamping bent arm; the clamping eccentric part is driven by the cylinder to adjust the opening and closing of the clamping C-shaped open bent arm to achieve locking of the grinding and polishing head on the supporting vertical arm, but the structure is relatively complex and occupies a large space, resulting in high cost.

[0004] Therefore, there is an urgent need for a double-station grinding and polishing machine that can save space and cost. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects and shortcomings in the prior art. To this end, the utility model provides a locking mechanism for the head of a grinder and polisher, which can save space and reduce costs while meeting the use of the grinder and polisher.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a locking mechanism for the head of a grinder and polisher, comprising a swivel seat rotatably mounted on the top of a column, a locking assembly pushed by a driving assembly being arranged in the swivel seat, and the driving assembly being arranged on the swivel seat; the locking assembly comprises a pressure plate, a plurality of locking shafts are arranged on the pressure plate, and the plurality of locking shafts are distributed on both sides of the column; the locking shaft is provided with a chamfer for locking the column.

[0007] Furthermore, the driving assembly comprises a rear cover which is sealingly bolted to the rotating seat, an expandable sealing pad is sealingly clamped between the rear cover and the rotating seat; and a pressure chamber which is in communication with an external air source is provided between the sealing pad and the rear cover.

[0008] Furthermore, the sealing pad is a plastic pad.

[0009] Furthermore, the driving assembly includes a cylinder, which is fixed on the rear cover, and the rear cover is bolted to the swivel seat; the push rod of the cylinder slides through the rear cover and is connected to the pressure plate.

[0010] Furthermore, a retaining ring is provided on the top of the column, and the bottom of the swivel seat is placed on the retaining ring.

[0011] Furthermore, a flange for bolting to the casing is provided at the bottom of the column.

[0012] Furthermore, the number of the locking shafts is three, and the three locking shafts are distributed in a triangle.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the swivel seat is rotatably sleeved on the top of the column, and the swivel seat is locked on the column through the chamfers on the three locking shafts; the overall structure is simple, space is saved and manufacturing costs are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 for Figure 1 sectional view of .

[0016] Figure 3 for Figure 1 Explosion diagram.

[0017] Figure 4 This is another structural schematic diagram of the utility model.

[0018] Among them: 1. column; 2. swivel seat; 3. back cover; 4. locking assembly; 5. sealing gasket; 6. pressure chamber; 7. retaining ring; 41. pressure plate; 42. locking shaft. DETAILED DESCRIPTION

[0019] 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.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 invention. Example

[0021] See also Figures 1 to 4 The utility model provides a locking mechanism for the head of a grinding and polishing machine, including a swivel seat 2 rotatably sleeved on the top of a column 1, a locking assembly 4 driven by a driving assembly is arranged in the swivel seat 2, and the driving assembly is arranged on the swivel seat 2; the locking assembly 4 includes a pressing plate 41, and a plurality of locking shafts 42 are arranged on the pressing plate 41, and these locking shafts 42 are distributed on both sides of the column 1; the locking shaft 42 is provided with a chamfer for locking the column 1.

[0022] The swivel seat 2 here is used to install the head of the grinder and polisher and can rotate with the head, and the details are not repeated here.

[0023] Preferably, a retaining ring 7 is provided on the top of the column 1, and the bottom of the swivel seat 2 is placed on the retaining ring 7. The retaining ring 7 can be coaxially bolted to the column 1, or coaxially welded to the column 1.

[0024] Preferably, the bottom of the column 1 is provided with a flange for bolting to the casing.

[0025] As for the locking shafts 42 , the number thereof is preferably three, and the three locking shafts 42 are distributed on both sides of the column 1 in a triangle shape.

[0026] As an embodiment of the utility model, the drive assembly includes a rear cover 3 sealingly bolted to the swivel seat 2, an expandable sealing pad 5 is sealed and clamped between the rear cover 3 and the swivel seat 2; a pressure chamber 6 communicating with an external air source is provided between the sealing pad 5 and the rear cover 3.

[0027] Preferably, the sealing pad 5 is a plastic pad.

[0028] When the swivel seat 2 is rotated to the right position, the pressure chamber 6 is inflated and pressurized, the sealing gasket 5 expands and pushes the pressure plate 41, and the pressure plate 41 drives the locking shaft 42 to slide toward the column 1. When the chamfer on the locking shaft 42 contacts the outer wall of the column 1, the swivel seat 2 is locked on the column 1. When the swivel seat 2 needs to be rotated, the pressure chamber 6 is depressurized, and the sealing gasket 5 is restored. At this time, the column 1 and the locking shaft 42 are in a loose state, and the operator can rotate the swivel seat 2.

[0029] As another embodiment of the present invention, Figure 4 As shown, the driving assembly includes a cylinder, which is fixed on the rear cover 3, and the rear cover 3 is bolted on the swivel seat 2; the push rod of the cylinder slides through the rear cover 3 and is connected to the pressure plate 41. By controlling the cylinder to drive the pressure plate 41, the locking function of the locking shaft 42 on the column 1 can be achieved.

[0030] Based on the above, the air cylinder can be replaced by an oil cylinder, an electromagnetic push rod, a screw nut mechanism, etc., and the details will not be repeated here.

[0031] The working principle of the utility model is based on that three locking shafts 42 are distributed in a triangle on both sides of the column 1. When the chamfers on the locking shafts 42 contact the outer wall of the column 1, the stable structure of the triangle can ensure that the swivel seat 2 is locked on the column 1.

[0032] The utility model can be summarized in other specific forms that do not violate the spirit or main features of the utility model. Therefore, no matter from which point of view, the above embodiments of the utility model can only be regarded as an explanation of the utility model and cannot limit the utility model. The claims indicate the scope of the utility model, while the above description does not indicate the scope of the utility model. Therefore, any changes within the meaning and scope equivalent to the claims of the utility model should be considered to be included in the scope of the claims of the utility model.

Claims

1. A locking mechanism for a grinding and polishing machine head, characterized in that: The invention comprises a rotating seat (2) rotatably sleeved on the top of a column (1), wherein a locking assembly (4) driven by a driving assembly is arranged in the rotating seat (2), and the driving assembly is arranged on the rotating seat (2); the locking assembly (4) comprises a pressing plate (41), and a plurality of locking shafts (42) are arranged on the pressing plate (41), and the plurality of locking shafts (42) are distributed on both sides of the column (1); and a chamfer for locking the column (1) is arranged on the locking shaft (42).

2. The locking mechanism for the head of a grinding and polishing machine according to claim 1, characterized in that: The drive assembly comprises a rear cover (3) sealingly bolted to the rotating seat (2); an expandable sealing pad (5) is sealed and clamped between the rear cover (3) and the rotating seat (2); and a pressure chamber (6) communicating with an external air source is provided between the sealing pad (5) and the rear cover (3).

3. The locking mechanism for the head of a grinding and polishing machine according to claim 2, characterized in that: The sealing pad (5) is a plastic pad.

4. The locking mechanism for the head of a grinding and polishing machine according to claim 1, characterized in that: The driving assembly comprises a cylinder, the cylinder is fixed on a rear cover (3), and the rear cover (3) is bolted to the swivel seat (2); a push rod of the cylinder slides through the rear cover (3) and is connected to the pressure plate (41).

5. The locking mechanism for the head of a grinding and polishing machine according to claim 2 or 4, characterized in that: A retaining ring (7) is provided on the top of the column (1), and the bottom of the rotating seat (2) is placed on the retaining ring (7).

6. The locking mechanism for the head of a grinding and polishing machine according to claim 5, characterized in that: The bottom of the column (1) is provided with a flange for bolting to the casing.

7. The locking mechanism for the head of a grinding and polishing machine according to claim 1, characterized in that: The number of the locking shafts (42) is three, and the three locking shafts (42) are distributed in a triangle.

Images