A polishing head changing device for a polishing machine

Abstract

The utility model discloses a polishing head replacement device of polishing machine relates to polishing machine technical field, including base plate, both sides of base plate upper surface are all fixedly connected with moving guide rail, two groups moving guide rail top are slidably connected with moving plate through sliding block, the upper surface middle part of moving plate is rotatably connected with the rotary disc, the rotary disc top is provided with three sets of positioning assembly and a set of processing station, the upper surface middle part rear side of base plate is fixedly connected with elevating system, the top fixedly connected with big arm of elevating system, big arm front side bottom surface is installed with locking assembly, and the position sensor is fixedly installed on the front side of locking assembly at big arm bottom surface. Advantages are that: the utility model discloses three sets of polishing heads are pre-stored through adopting rotary disc, and the rotary switch and pneumatic cylinder fine adjustment of cooperation stepping motor drive can complete the replacement of polishing head fast, and the efficiency of traditional manual replacement has been promoted, reduces downtime, is suitable for continuous batch polishing operation.

Description

Technical Field

[0001] This utility model relates to the field of polishing machine technology, specifically to a polishing machine grinding head replacement device. Background Technology

[0002] Polishing is a processing method that uses mechanical, chemical, or electrochemical processes to reduce the surface roughness of a workpiece, resulting in a bright and smooth surface. In both daily life and industrial applications, it is necessary to achieve a smooth and clean surface on some workpieces or products, which requires polishing. Polishing machines use an electric motor to drive a grinding head mounted on a spindle to rotate at high speed, thereby removing paint contamination, oxide layers, and shallow scratches. To ensure the quality of polishing, grinding heads contaminated with dust or dirt should not be used. When a grinding head accumulates too much dirt and cannot be cleaned properly, it must be replaced promptly.

[0003] Polishing equipment requires the replacement of grinding discs of different sizes during use. Existing grinding disc disassembly methods are complicated, and replacing grinding heads is very cumbersome, which greatly reduces polishing efficiency. In addition, the vibration of the grinding head during polishing causes scratches, unevenness, and other defects on the workpiece surface, reducing the pass rate. Furthermore, insecure locking may cause the grinding head to fall off during high-speed rotation, posing a safety hazard. To address the above problems, a grinding head replacement device for polishing machines is proposed. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a grinding head replacement device for a polishing machine. This solves the problems of the current polishing devices, which require the replacement of grinding discs of different sizes during use. The existing grinding discs are complicated to disassemble, and replacing the grinding head is very cumbersome, which greatly reduces the polishing efficiency. In addition, the grinding head vibrates during the polishing process, causing scratches, unevenness and other defects on the workpiece surface, which reduces the pass rate. Furthermore, if the locking is not secure, the grinding head may fall off during high-speed rotation, posing a safety hazard.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a grinding head replacement device for a polishing machine, comprising a base plate, on both the left and right sides of the upper surface of the base plate being fixedly connected to movable guide rails, and a movable plate being slidably connected above the two sets of movable guide rails via sliding blocks, with a rotating disk rotatably connected to the middle of the upper surface of the movable plate, and three sets of positioning components and one processing station being arranged above the rotating disk, with a lifting mechanism fixedly connected to the rear side of the middle of the upper surface of the base plate, and a large arm fixedly connected to the top of the lifting mechanism, with a locking component installed on the bottom front side of the large arm, and a position sensor fixedly installed on the bottom side of the large arm in front of the locking component.

[0006] Preferably, a stepper motor for driving the rotating disk to rotate is fixedly installed in the middle of the bottom surface of the moving plate, a cylinder is fixedly connected to the right side of the upper surface of the base plate, the output end of the cylinder is fixedly connected to the right side of the moving plate through a connector, and a spindle motor is fixedly installed on the front side above the upper arm.

[0007] Preferably, the positioning component includes a mounting plate, which is fixedly connected to the upper surface of the rotating disk. Step blocks are fixedly connected to the four sides of the upper surface of the mounting plate, and a grinding disc is provided between the four sets of step blocks. A first positioning arrow is provided on the upper surface of the left and right step blocks.

[0008] Preferably, an extension rod is fixedly connected to the upper center of the grinding disc, and a first locking block is fixedly connected to the top of the extension rod. The first locking block has elongated locking holes on both the left and right sides of its upper surface, and a second positioning arrow is provided on both the left and right sides of the upper surface of the grinding disc.

[0009] Preferably, the locking assembly includes a rotating spindle, the top of which is fixedly connected to the output end of a spindle motor via a coupling, a second locking block with the same shape as the first locking block is fixedly connected to the bottom of the rotating spindle, a positioning plate is fixedly connected to the middle of the front side of the rotating spindle, and a positioning mark is provided above the positioning plate.

[0010] Preferably, the second locking block is rotatably connected to rotating rods on both the left and right sides, and the bottom ends of the two rotating rods are fixedly connected to horizontally arranged locking rods.

[0011] Preferably, a rotating handle is fixedly connected to the top of the rotating rod, and locking pins are slidably connected to the left and right sides above the rotating handle. Two pin holes are opened on the left and right sides of the upper surface of the second locking block, and the two pin holes on the left and right sides are arranged in a front-back direction.

[0012] Compared with the prior art, the advantages of this utility model are: 1. This utility model adopts a rotary disk to pre-store three sets of grinding heads, combined with stepper motor-driven rotation switching and cylinder fine adjustment, which can quickly complete the grinding head replacement. Compared with the traditional manual replacement, the efficiency is improved, the downtime is reduced, and it is suitable for continuous batch polishing operations. The automated linkage (lifting mechanism, moving plate and rotary disk working together) reduces manual intervention, the replacement process is standardized, and the efficiency fluctuation caused by the difference in operating speed is avoided.

[0013] 2. In this utility model, the positioning component is aligned with the first and second positioning arrows to ensure the concentricity of the grinding head installation; the second locking block of the locking component matches the shape of the first locking block, and after the locking rod rotates, it is perpendicularly engaged with the elongated locking hole to achieve radial rigid fixation. Combined with the axial locking of the locking pin, it avoids the offset or loosening of the grinding head when it rotates at high speed, so that the roughness of the polished surface remains consistent.

[0014] 3. In this utility model, the locking component achieves quick locking / unlocking by rotating the handle to drive the rotating rod. No special tools are required, and the operation steps are simplified (only two steps: rotation and pin insertion). New employees can start working after simple training, reducing labor costs. The pre-stored grinding head design allows for the preparation of different models or clean grinding heads in advance, eliminating the need for temporary searching and transportation when switching, further reducing the intensity of manual labor. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the present invention from another perspective; Figure 3 This is an exploded view of the positioning component in this utility model; Figure 4 This is an exploded view of the locking component and the grinding disc in this utility model; Figure 5 for Figure 1 A magnified view of a portion of point A in the middle; Figure 6 for Figure 4 A magnified view of a portion of point B in the middle.

[0016] The numbers on the map are: 1. Base plate; 2. Moving guide rail; 3. Moving plate; 4. Rotary disk; 5. Stepper motor; 6. Cylinder; 7. Positioning assembly; 701. Mounting plate; 702. Step block; 703. Grinding disc; 704. First locking block; 705. Locking hole; 706. First positioning arrow; 707. Second positioning arrow; 708. Extension rod; 8. Processing station; 9. Lifting mechanism; 10. Boom; 11. Spindle motor; 12. Locking assembly; 1201. Rotating spindle; 1202. Second locking block; 1203. Rotating rod; 1204. Rotating handle; 1205. Locking rod; 1206. Locking pin; 1207. Pin hole; 1208. Positioning plate; 13. Position sensor. Detailed Implementation

[0017] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0019] Reference Figure 1 - Figure 6 As shown, a polishing head changing device for a polishing machine includes a base plate 1. Movable guide rails 2 are fixedly connected to both the left and right sides of the upper surface of the base plate 1. A movable plate 3 is slidably connected above the two sets of movable guide rails 2 via sliding blocks. A rotary disk 4 is rotatably connected to the center of the upper surface of the movable plate 3. Three sets of positioning components 7 and one processing station 8 are arranged above the rotary disk 4. A lifting mechanism 9 is fixedly connected to the rear side of the center of the upper surface of the base plate 1. A large arm 10 is fixedly connected to the top of the lifting mechanism 9. A locking component 12 is installed on the bottom front side of the large arm 10. The bottom surface of the large arm 10 is fixedly mounted on the front side of the locking component 12. Equipped with a position sensor 13, the position sensor 13 can be of model TCF10ANL02. The base plate 1 serves as a basic support platform, with movable guide rails 2 fixedly connected to the left and right sides of its upper surface. A linear guide rail mechanism is formed by sliding blocks and movable plate 3. A rotary disk 4 is set in the middle of the upper surface of the movable plate 3. The rotary disk 4 integrates three sets of positioning components 7 and one set of processing stations 8. A lifting mechanism 9 is vertically fixed in the middle of the rear side of the base plate 1. The top of the mechanism is connected to the locking component 12 through the large arm 10. The position sensor 13 is installed on the bottom surface of the front side of the large arm 10, forming a three-dimensional spatial adjustment system.

[0020] Specifically, a stepper motor 5 for driving the rotary disk 4 to rotate is fixedly installed in the middle of the bottom surface of the movable plate 3. A cylinder 6 is fixedly connected to the right side of the upper surface of the base plate 1. The output end of the cylinder 6 is fixedly connected to the right side of the movable plate 3 through a connector. A spindle motor 11 is fixedly installed on the front side above the upper arm 10. The cylinder 6 drives the movable plate 3 to slide along the movable guide rail 2, which can remove the processing station 8 from the processing area, making it convenient to take out the polished workpiece. The stepper motor 5 installed in the middle of the bottom surface of the movable plate 3 drives the rotary disk 4 to perform indexing rotation. The cylinder 6 is fixed on the right side of the base plate 1, and its piston rod is connected to the right side of the movable plate 3 through a connector. When the cylinder 6 extends or retracts, it drives the movable plate 3 to slide back and forth along the movable guide rail 2, realizing the function switching of the processing station 8 entering and leaving the processing area.

[0021] Specifically, the positioning component 7 includes a mounting plate 701, which is fixedly connected to the upper surface of the rotating disk 4. Step blocks 702 are fixedly connected to the four sides of the upper surface of the mounting plate 701, and a grinding disc 703 is provided between the four sets of step blocks 702. The upper surface of the left and right step blocks 702 is provided with a first positioning arrow 706.

[0022] Furthermore, an extension rod 708 is fixedly connected to the upper center of the grinding disc 703, and a first locking block 704 is fixedly connected to the top of the extension rod 708. The upper surface of the first locking block 704 has long locking holes 705 on both the left and right sides. The upper surface of the grinding disc 703 has second positioning arrows 707 on both the left and right sides. The mounting plate 701 of the positioning component 7 is fixed to the surface of the rotating disc 4. The upper surface of the plate has four sets of stepped blocks 702 arranged in a rectangle, which form the positioning cavity of the grinding disc 703. The upper surface of the stepped blocks 702 is provided with a first positioning arrow 706, which forms a concentricity calibration mark with the second positioning arrow 707 on the upper surface of the grinding disc 703 to ensure the installation accuracy of the grinding head.

[0023] Specifically, the locking assembly 12 includes a rotating spindle 1201. The top of the rotating spindle 1201 is fixedly connected to the output end of the spindle motor 11 via a coupling. A second locking block 1202 with the same shape as the first locking block 704 is fixedly connected to the bottom of the rotating spindle 1201. A positioning plate 1208 is fixedly connected to the middle of the front side of the rotating spindle 1201. A positioning mark is provided above the positioning plate 1208. The middle of the grinding disc 703 is connected to the first locking block 704 via an extension rod 708. The locking block has an elongated locking hole 705. The corresponding front end of the upper arm 10 is provided with a rotating spindle 1201, and the bottom of the second locking block 1202 is fixed. The shape of the block is completely matched with the first locking block 704, realizing the concentric transmission connection between the rotating spindle 1201 and the grinding disc 703.

[0024] Furthermore, rotating rods 1203 are rotatably connected to both sides of the second locking block 1202, and horizontally arranged locking rods 1205 are fixedly connected to the bottom ends of the two rotating rods 1203.

[0025] Furthermore, a rotating handle 1204 is fixedly connected to the top of the rotating rod 1203. Locking pins 1206 are slidably connected to the left and right sides of the rotating handle 1204. Two pin holes 1207 are opened on the left and right sides of the upper surface of the second locking block 1202. The two pin holes 1207 on the left and right sides are arranged in a front-back direction. The rotating rod 1203 is rotatably connected to both sides of the second locking block 1202, and a locking rod 1205 is fixed at its bottom end. When the rotating handle 1204 drives the rotating rod 1203 to rotate, the locking rod 1205 is inserted into the locking hole 705 of the first locking block 704 and rotates 90° to form radial locking. At the same time, the locking pins 1206 on the rotating handle 1204 slide into the pin holes 1207 of the second locking block 1202 to achieve axial anti-loosening.

[0026] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer for control. The specific implementation of this disclosure omits detailed descriptions of known functions and components. To ensure equipment compatibility, the operating methods used are consistent with the parameters of commercially available instruments. The air source, pipelines, and control system required for the operation of cylinder 6 are common knowledge to those skilled in the art and will not be described in detail in this embodiment. In addition, a positioning plate 1208 is fixed on the front side of the rotating spindle 1201, and a positioning mark is set on its surface. The position sensor 13 detects the mark in a non-contact manner and transmits the indexing position signal of the rotating disk 4 to the main controller. The main controller controls the stepper motor 5 and cylinder 6 to move according to a preset program to achieve precise positioning for grinding head replacement. This control principle is existing technology and will not be described in detail here.

[0027] Working principle: A clean grinding disc 703 is installed in the three sets of positioning components 7 of the rotary disk 4. During installation, the new square grinding disc 703 is placed between the four sets of stepped blocks 702, and the first positioning arrow 706 is aligned with the second positioning arrow 707 to ensure the concentricity of the grinding head. The first locking block 704 at the top of the extension rod 708 faces upward, waiting for docking. The moving plate 3 is in the rear limit position under the action of the cylinder 6. The processing station 8 of the rotary disk 4 is aligned with the locking component 12. The grinding head currently in use is fixed to the rotary disk by the locking component 12. On the spindle 1201, the spindle motor 11 drives it to rotate at high speed for polishing. When the grinding head has too much dirt or needs to be replaced, after stopping the machine, the lifting mechanism 9 drives the boom 10 to rise, causing the locking assembly 12 to separate from the current grinding head. The stepper motor 5 drives the rotary table 4 to rotate, and the positioning assembly 7 with the installed grinding head rotates to be directly below the locking assembly 12. During the rotation, the position sensor 13 detects the positioning mark on the positioning plate 1208 in real time to ensure that the first locking block 704 of the new grinding head is locked with the second locking assembly 12. Block 1202 is precisely aligned. If there is a slight deviation in alignment, cylinder 6 drives the moving plate 3 to slide back and forth along the moving guide rail 2, fine-tuning the position of the rotating disk 4 until the first locking block 704 and the second locking block 1202 are completely matched. The lifting mechanism 9 drives the boom 10 to descend, so that the second locking block 1202 is in contact with the first locking block 704 of the new grinding head. At this time, the rotating spindle 1201 and the extension rod 708 are concentric. At this time, the rotating rod 1203 drives the locking rod 1205 to insert into the locking hole 705 in the first locking block 704 and lock. The clamping rod 1205 extends below the first locking block 704. Then, the rotating handle 1204 is manually rotated, causing the rotating rod 1203 to rotate, so that the two locking rods 1205 rotate 90 degrees and form a perpendicular distribution with the elongated locking hole 705, thus achieving radial fixation. Then, the locking pin 1206 on the rotating handle 1204 is slid into the pin hole 1207 of the second locking block 1202 to prevent the rotating rod 1203 from loosening, thus completing the axial fixation. Then, the stepper motor 5 drives the rotating disk 4 to rotate, so that the processing station 8 moves to below the new grinding head.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A grinding head changing device for a polishing machine, characterized in that: The substrate (1) includes a base plate (1), on which both sides of the upper surface of the base plate (1) are fixedly connected to movable guide rails (2). A movable plate (3) is slidably connected above the two sets of movable guide rails (2) via sliding blocks. A rotating disk (4) is rotatably connected to the middle of the upper surface of the movable plate (3). Three sets of positioning components (7) and one set of processing stations (8) are provided above the rotating disk (4). A lifting mechanism (9) is fixedly connected to the rear side of the middle of the upper surface of the base plate (1). A large arm (10) is fixedly connected to the top of the lifting mechanism (9). A locking component (12) is installed on the bottom front side of the large arm (10). A position sensor (13) is fixedly installed on the bottom side of the large arm (10) in front of the locking component (12).

2. The polishing head replacement device for a polishing machine according to claim 1, characterized in that: A stepper motor (5) for driving the rotating disk (4) to rotate is fixedly installed in the middle of the bottom surface of the moving plate (3). A cylinder (6) is fixedly connected to the right side of the upper surface of the base plate (1). The output end of the cylinder (6) is fixedly connected to the right side of the moving plate (3) through a connector. A spindle motor (11) is fixedly installed on the front side above the upper arm (10).

3. A polishing head changing device for a polishing machine according to any one of claims 1-2, characterized in that: The positioning component (7) includes a mounting plate (701), which is fixedly connected to the upper surface of the rotating disk (4). Step blocks (702) are fixedly connected to the four sides of the upper surface of the mounting plate (701). A grinding disc (703) is provided between the four sets of step blocks (702). A first positioning arrow (706) is provided on the upper surface of the two left and right step blocks (702).

4. The polishing head changing device for a polishing machine according to claim 3, characterized in that: An extension rod (708) is fixedly connected to the upper center of the grinding disc (703). A first locking block (704) is fixedly connected to the top of the extension rod (708). The first locking block (704) has long locking holes (705) on both the left and right sides of its upper surface. A second positioning arrow (707) is provided on both the left and right sides of the upper surface of the grinding disc (703).

5. A grinding head changing device for a polishing machine according to any one of claims 1-2, characterized in that: The locking assembly (12) includes a rotating spindle (1201), the top of which is fixedly connected to the output end of the spindle motor (11) via a coupling, and a second locking block (1202) with the same shape as the first locking block (704) is fixedly connected to the bottom of the rotating spindle (1201). A positioning plate (1208) is fixedly connected to the middle of the front side of the rotating spindle (1201), and a positioning mark is provided above the positioning plate (1208).

6. The grinding head changing device for a polishing machine according to claim 5, characterized in that: The second locking block (1202) is rotatably connected to rotating rods (1203) on both the left and right sides, and the bottom ends of the two rotating rods (1203) are fixedly connected to horizontally arranged locking rods (1205).

7. The polishing head changing device for a polishing machine according to claim 6, characterized in that: The rotating rod (1203) is fixedly connected to the top of the rotating handle (1204), and locking pins (1206) are slidably connected to the left and right sides above the rotating handle (1204). Two pin holes (1207) are opened on the left and right sides of the upper surface of the second locking block (1202), and the two pin holes (1207) on the left and right sides are arranged in the front and back direction.

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