Automatic grinding head replacing mechanism and polishing machine

Abstract

The utility model discloses an automatic grinding head replacing mechanism which comprises a clamp assembly and a first driving assembly used for driving the clamp assembly to move. The clamp assembly comprises a mounting plate, a first clamping jaw used for taking down an old grinding head from a polishing head, a second clamping jaw used for clamping a new grinding head and sending the new grinding head to the polishing head and an in-place pressing rod used for pressing the new grinding head to the polishing head, and the first clamping jaw, the second clamping jaw and the in-place pressing rod are arranged below the mounting plate in a staggered mode. The utility model further provides a polishing machine. According to the automatic grinding head replacing mechanism, new and old grinding heads can be replaced, pressing is in place, automatic replacement of the grinding heads is achieved, and production efficiency is improved. According to the polishing machine, the grinding head can be automatically replaced, raw materials can be automatically fed or discharged, the production time of the polishing machine is greatly prolonged, and the production efficiency is multiplied.

Description

Technical Field

[0001] This utility model belongs to the field of polishing, and in particular relates to a grinding head changing mechanism and a polishing machine. Background Technology

[0002] With the rapid development of smartphones and their fast-paced iterations, the market size is enormous. The phone body is an essential component of a smartphone, serving as its robust core, supporting thousands of components and tightly encapsulating them. Therefore, its stability, smoothness, and dimensional accuracy are crucial. To achieve sufficient stability, smoothness, and precision, high-strength materials and high-smoothness, high-precision manufacturing processes must be used. Among these processes, the polishing process is extremely important, ensuring the overall smoothness and accurate dimensions of the phone body.

[0003] Five-axis polishing machines are widely used for polishing mobile phone bodies. Currently, the grinding heads of the five-axis polishing machines are changed manually and materials are loaded and unloaded manually piece by piece. However, manual loading and unloading is extremely inefficient and delays the production time of the main machine. At present, there is no automatic grinding head changing and automatic loading and unloading equipment for mobile phone bodies suitable for polishing. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the deficiencies and defects mentioned in the background art above, and to provide an automatic grinding head changing mechanism and polishing machine that can automatically load and unload materials, automatically change grinding heads, and has high production efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is as follows:

[0006] An automatic grinding head changing mechanism includes a clamping assembly and a first drive assembly for moving the clamping assembly. The clamping assembly includes a mounting plate, a first gripper for removing an old grinding head from a polishing head, a second gripper for gripping a new grinding head and delivering it to the polishing head, and a positioning pressure bar for pressing the new grinding head onto the polishing head. The first gripper, the second gripper, and the positioning pressure bar are offset and mounted below the mounting plate.

[0007] In the aforementioned automatic grinding head changing mechanism, preferably, both the first and second grippers include a pair of gripping arms, and a second drive assembly is provided on the pair of gripping arms for controlling the clamping or loosening of the gripping arms; the positioning pressure rod is fixed under the mounting plate. The second drive assembly can drive the first and second grippers to grip the grinding head, and the second drive assembly can be a conventional device in the prior art. The XYZ direction movement of the first and second grippers is achieved by the first drive assembly. The positioning pressure rod can be located between the first and second grippers. When the first gripper removes the grinding head and the second gripper installs the new grinding head onto the polishing head, the positioning pressure rod, driven by the first drive assembly, adjusts its position and presses the new grinding head downward.

[0008] In the aforementioned automatic grinding head changing mechanism, preferably, a tool setting device for detecting whether a new grinding head is properly installed and a universal nozzle for air cleaning the polishing head are also provided under the mounting plate. The tool setting device is similar to a sensor used to detect whether a new grinding head is properly installed. The universal nozzle is used to clean the polishing head when changing grinding heads, and is connected to an air source.

[0009] In the aforementioned automatic grinding head changing mechanism, preferably, multiple clamping assemblies are arranged side-by-side, corresponding to the number of polishing heads. These clamping assemblies are arranged side-by-side below a connecting plate, which is located below the first driving assembly. The first driving assembly includes a three-axis drive for moving the connecting plate along the XYZ directions. The number of clamping assemblies corresponds to the number of polishing heads. For example, when using a five-axis polishing machine, five clamping assemblies are arranged side-by-side below the connecting plate, which is located below the first driving assembly. Movement of the first driving assembly moves the connecting plate, thereby adjusting the position of each clamping assembly. The first driving assembly can use existing conventional equipment and can move the connecting plate along the XYZ directions.

[0010] As a general technical concept, this utility model also provides a polishing machine, including a frame and a polishing head, and further including an automatic loading and unloading mechanism for automatic feeding and unloading, a secondary positioning mechanism for positioning raw materials and temporarily storing polished materials, and the aforementioned automatic grinding head changing mechanism. The secondary positioning mechanism is located outside the frame, the automatic loading and unloading mechanism is located on the frame and is reciprocally positioned between the secondary positioning mechanism and the polishing head, and the automatic grinding head changing mechanism is located on the frame above the polishing head. The polishing head is used to polish the workpiece, the automatic loading and unloading mechanism is used to load raw materials and unload polished materials, and the automatic grinding head changing mechanism is used to change the grinding head. Through the cooperation of the automatic loading and unloading mechanism and the automatic grinding head changing mechanism, the automatic loading and unloading of the workpiece to be polished and the automatic changing of the grinding head can be realized, which helps to reduce manual operation and improve processing efficiency.

[0011] In the aforementioned polishing machine, preferably, the automatic loading and unloading mechanism includes a first frame, a second frame, and a suction cup claw. The frame is equipped with a third drive assembly for driving the first frame to move horizontally between the secondary positioning mechanism and the polishing head. The first frame and the third drive assembly are connected. The second frame is mounted on the first frame via a fourth drive assembly for driving the second frame to move vertically. The suction cup claw is located at the lower end of the second frame. A vacuum mechanism is connected to the suction cup claw for vacuum suction of the workpiece. The suction cup claw is mounted on the second frame, and the second frame is mounted on the first frame. The first frame is connected to the third drive assembly. The third drive assembly can adopt a structure of linear guide rail + servo + screw drive + bellows cover protection, used to drive the first frame to move horizontally back and forth between the secondary positioning mechanism and the polishing head. Simultaneously, the first and second frames are connected via the fourth drive assembly, which can also adopt a servo screw drive structure or other drive structures, used to drive the second frame to move vertically relative to the first frame, thereby driving the suction cup claw to move vertically. Driven by the third and fourth drive components, the suction cup claw can move horizontally and vertically, facilitating the loading and unloading of materials.

[0012] In the aforementioned polishing machine, preferably, the automatic loading and unloading mechanism further includes a sponge brush for cleaning the polishing station and a third frame for mounting the sponge brush. The third frame is mounted on the second frame via a fifth drive assembly for moving the third frame up and down. A water supply channel is connected to the sponge brush. After polishing at the polishing station, abrasive residue may remain. The sponge brush can be used to clean the polishing station before raw material is applied for the next polishing cycle. The water supply channel on the sponge brush allows water to flow during cleaning. The cleaning of the sponge brush and the loading and unloading of the suction cup claws need to be performed at different times. The sponge brush, driven by the fifth drive assembly, moves the third frame up and down independently, facilitating separate control from the up and down movement of the suction cup claws. The fifth drive assembly can be a conventional device, such as a telescopic cylinder. A vertical through-hole can be provided on the second frame to facilitate the up and down movement of the third frame.

[0013] In the aforementioned polishing machine, preferably, there are multiple polishing heads, multiple suction cup claws arranged side-by-side corresponding to the number of polishing heads, and multiple sponge brushes, each corresponding to one of the suction cup claws and arranged side-by-side (the sponge brushes and suction cup claws are arranged adjacent to each other). The corresponding number of polishing heads, suction cup claws, and sponge brushes facilitates loading and unloading and cleaning. For example, when the polishing machine is a five-axis polishing machine, the number of polishing heads, suction cup claws, and sponge brushes are all five.

[0014] In the aforementioned polishing machine, preferably, the first frame is equipped with a grinding head positioning fixture for storing old and new grinding heads. The grinding head positioning fixture is used to hold both old and new grinding heads; when the first and second jaws grip the grinding heads, they are removed from the fixture. The grinding head positioning fixture can have various specifications to match different models of grinding heads.

[0015] In the aforementioned polishing machine, preferably, the secondary positioning mechanism includes a raw material positioning area and a finished material storage area, which are arranged in a one-to-one correspondence. The raw material positioning area includes a fixed long-side reference edge and a fixed short-side reference edge. A movable long-side positioning clamping block is provided on the opposite side of the long-side reference edge, and a movable short-side positioning clamping block is provided on the opposite side of the short-side reference edge. The long-side and short-side positioning clamping blocks are detachable and have various different specifications. The raw material positioning area can be used for preliminary positioning of the raw material, while the finished material storage area is used for temporary storage of the processed finished material. The finished material storage area can be located above the raw material positioning area, with the two arranged alternately. In the raw material positioning area, the long-side and short-side reference edges are fixed differently, and the long-side and short-side positioning clamping blocks can be moved by a driving component for precise positioning of the raw material.

[0016] The automatic grinding head changing mechanism of this utility model has the following working process: The polishing head of the polishing machine is raised, and the universal nozzle blows compressed gas towards the polishing head. At the same time, the polishing head rotates at high speed to clean the grinding fluid. The first drive assembly drives the first gripper to pick up the old grinding head on the polishing head and move it to the grinding head positioning fixture, where the old grinding head is placed. Then, the second gripper picks up the new grinding head, moves it to the polishing head, and installs the new grinding head. The second gripper moves to a safe position, and the first drive assembly drives the positioning pressure rod to align with the new grinding head and press it down to install the new grinding head in place. If the tool setter does not alarm, it means that the new grinding head is installed in place. The positioning pressure rod returns to its original position, thus completing the automatic grinding head changing.

[0017] The polishing machine of this utility model operates as follows: After processing, the worktable is moved out, the protective door is opened, the third drive component moves the suction claw to above the polishing station and aligns the suction claw with the raw material, and the fourth drive component moves the suction claw down to pick up the raw material. Water is sprayed and the polishing station is cleaned by a sponge brush, and then the automatic loading and unloading mechanism is moved outside the machine to place the raw material in the raw material storage area. The suction claw then picks up the raw material from the raw material positioning area and moves it to the polishing station, where it is placed. The automatic loading and unloading mechanism is moved outside the machine, the protective door is closed, and polishing continues.

[0018] This utility model of a polishing machine can be used for polishing mobile phone bodies. It features automatic grinding head changing and automated loading and unloading of mobile phone bodies. It can achieve functions such as automatic grinding head changing, mobile phone body handling, automatic positioning, and automatic exchange of raw and processed materials, realizing the automation, intelligence, and informatization of the mobile phone body polishing process. Taking a five-axis polishing machine as an example, this polishing machine connects to an incoming material AGV. The AGV places raw material into the raw material positioning area of ​​the secondary positioning mechanism. The automatic loading and unloading mechanism unloads five pieces of processed material and then loads five pieces of raw material to the polishing station. When the grinding head wears out after a period of processing, it is automatically replaced. Compared to manually loading five pieces of material to the main unit each time, this greatly improves work efficiency and saves manpower compared to manually loading and changing grinding heads one piece at a time, significantly increasing production efficiency.

[0019] Compared with the prior art, the advantages of this utility model are:

[0020] The automatic grinding head changing mechanism of this utility model includes a first gripper, a second gripper, and a positioning pressure bar. The first and second grippers enable the replacement of old and new grinding heads, while the positioning pressure bar enables the new grinding head to be pressed into place. Through the above components, automatic grinding head changing can be achieved, reducing manual operation and improving production efficiency.

[0021] The polishing machine of this utility model includes an automatic loading and unloading mechanism, an automatic grinding head changing mechanism, and a secondary positioning mechanism. It can automatically change the grinding head and automatically load raw materials or unload cooked materials, which greatly increases the production time of the polishing machine and multiplies the production efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the automatic grinding head changing mechanism in an embodiment.

[0024] Figure 2 This is a schematic diagram of the clamping assembly in the automatic grinding head changing mechanism of the embodiment (the protective cover outside the clamping assembly, on which the grinding head is clamped, is omitted).

[0025] Figure 3 This is a structural schematic diagram of the clamping assembly in the automatic grinding head changing mechanism of an embodiment from another angle.

[0026] Figure 4 This is a schematic diagram of the structure of a five-axis polishing machine as an example.

[0027] Figure 5 This is a schematic diagram of the automatic loading and unloading mechanism in the five-axis polishing machine of the embodiment.

[0028] Figure 6 This is a schematic diagram of the secondary positioning mechanism in the five-axis polishing machine of the embodiment (the material storage area is not shown).

[0029] Figure 7 This is a schematic diagram of the secondary positioning mechanism in the five-axis polishing machine of the embodiment (showing the clinker storage area).

[0030] Legend

[0031] 1. First drive assembly; 2. Mounting plate; 3. First gripper; 4. Second gripper; 5. Positioning lever; 6. Clamping arm; 7. Tool setter; 8. Universal nozzle; 9. Connecting plate; 10. Frame; 11. First frame; 12. Second frame; 13. Suction cup gripper; 14. Third drive assembly; 15. Fourth drive assembly; 16. Sponge brush; 17. Third frame; 18. Fifth drive assembly; 19. Grinding head positioning fixture; 20. Raw material positioning area; 2001. Long side reference edge; 2002. Short side reference edge; 2003. Long side positioning clamping block; 2004. Short side positioning clamping block; 21. Clinker storage area. Detailed Implementation

[0032] To facilitate understanding of this utility model, it will be described more comprehensively and in detail below with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0033] It should be noted that when a component is described as being "fixed to, attached to, connected to or connected to" another component, it can be directly fixed to, attached to, connected to or connected to the other component, or it can be indirectly fixed to, attached to, connected to or connected to the other component through other intermediate connectors.

[0034] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0035] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0036] Example:

[0037] like Figures 1-3As shown, the automatic grinding head changing mechanism of this embodiment includes a clamping assembly and a first driving assembly 1 for moving the clamping assembly. The clamping assembly includes a mounting plate 2, a first gripper 3 for removing the old grinding head from the polishing head, a second gripper 4 for gripping the new grinding head and sending it to the polishing head, and a positioning pressure bar 5 for pressing the new grinding head onto the polishing head. The first gripper 3, the second gripper 4 and the positioning pressure bar 5 are offset and installed below the mounting plate 2.

[0038] In this embodiment, both the first gripper 3 and the second gripper 4 include a pair of gripping arms 6, and the pair of gripping arms 6 are provided with a second drive assembly for controlling the gripping or releasing of the gripping arms 6; the positioning pressure rod 5 is fixed under the mounting plate 2.

[0039] In this embodiment, the mounting plate 2 is also equipped with a tool setting device 7 for detecting whether the new grinding head is installed in place, and a universal nozzle 8 for air jet cleaning of the polishing head.

[0040] In this embodiment, the automatic grinding head changing mechanism is used in a five-axis polishing machine. Five clamping assemblies are arranged side by side, corresponding to the number of polishing heads. The five clamping assemblies are arranged side by side below a connecting plate 9. The connecting plate 9 is located below a first driving assembly 1. The first driving assembly 1 includes a three-axis drive for moving the connecting plate 9 along the XYZ direction.

[0041] The automatic grinding head changing mechanism of this embodiment operates as follows: The polishing head of the polishing machine is raised, and the universal nozzle 8 blows compressed gas onto the polishing head. At the same time, the polishing head rotates at high speed to clean the grinding fluid. The first drive assembly 1 drives the first gripper 3 to pick up the old grinding head on the polishing head and move it to the grinding head positioning fixture 19, placing the old grinding head into the fixture 19. Then, the second gripper 4 picks up the new grinding head, moves it to the polishing head, and installs the new grinding head into the polishing head. The second gripper 4 moves to a safe position, and the first drive assembly 1 drives the positioning pressure rod 5 to align with the new grinding head and press it down to install the new grinding head into place. If the tool setter 7 does not alarm, it means that the new grinding head is installed in place. The positioning pressure rod 5 returns to its original position, thus completing the automatic grinding head changing.

[0042] like Figure 4 As shown, the five-axis polishing machine of this embodiment includes a frame 10 and a polishing head, as well as an automatic loading and unloading mechanism for automatic feeding and unloading, a secondary positioning mechanism for positioning raw materials and temporarily storing polished materials, and the aforementioned automatic grinding head changing mechanism. The secondary positioning mechanism is located on the outside of the frame 10, the automatic loading and unloading mechanism is located on the frame 10 and is located between the secondary positioning mechanism and the polishing head, and the automatic grinding head changing mechanism is located on the frame 10 and above the polishing head.

[0043] like Figure 5As shown, in this embodiment, the automatic loading and unloading mechanism includes a first frame 11, a second frame 12, and a suction cup claw 13. The frame 10 is provided with a third drive assembly 14 for driving the first frame 11 to move horizontally between the secondary positioning mechanism and the polishing head. The first frame 11 and the third drive assembly 14 are connected. The second frame 12 is mounted on the first frame 11 through a fourth drive assembly 15 for driving the second frame 12 to move up and down. The suction cup claw 13 is located at the lower end of the second frame 12.

[0044] like Figure 5 As shown, in this embodiment, the automatic loading and unloading mechanism also includes a sponge brush 16 for cleaning and polishing the station and a third frame 17 for mounting the sponge brush 16. The third frame 17 is mounted on the second frame 12 via a fifth drive assembly 18 for moving the third frame 17 up and down. A water supply channel is connected to the sponge brush 16.

[0045] In this embodiment, there are five polishing heads and five suction cup claws 13 arranged side by side, corresponding to the number of polishing heads. There are also five sponge brushes 16, which correspond one-to-one with the suction cup claws 13 and are arranged side by side.

[0046] In this embodiment, the first frame 11 is provided with a grinding head positioning fixture 19 for storing old grinding heads and new grinding heads.

[0047] like Figure 6 , Figure 7 As shown in this embodiment, the secondary positioning mechanism includes five raw material positioning areas 20 and five clinker storage areas 21. The raw material positioning areas 20 and clinker storage areas 21 are arranged in a one-to-one correspondence, with the clinker storage areas 21 positioned above the raw material positioning areas 20. The raw material positioning area 20 includes a fixed long side reference side 2001 and a short side reference side 2002. A movable long side positioning clamping block 2003 is provided on the opposite side of the long side reference side 2001, and a movable short side positioning clamping block 2004 is provided on the opposite side of the short side reference side 2002. The long side positioning clamping block 2003 and the short side positioning clamping block 2004 are detachable and have various different specifications.

[0048] The five-axis polishing machine of this embodiment operates as follows: After processing, the worktable is moved out, the protective door is opened, the third drive assembly 14 drives the suction claw 13 to move above the polishing station and aligns the suction claw 13 with the raw material. The fourth drive assembly 15 drives the suction claw 13 to move down and pick up the raw material. Water is sprayed and the polishing station is cleaned by the sponge brush 16. Then, the automatic loading and unloading mechanism is moved outside the machine to place the raw material in the raw material storage area 21. The suction claw 13 then picks up the raw material from the raw material positioning area 20 and moves it to the polishing station, where it is placed. The automatic loading and unloading mechanism is moved outside the machine, the protective door is closed, and polishing continues.

[0049] In this embodiment, all drive components, tool setter 7, etc. can be existing conventional equipment. At the same time, the automatic grinding head changing mechanism and the automatic loading and unloading mechanism can also be used in other polishing machines, and are not limited to five-axis polishing machines.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic grinding head changing mechanism characterized by comprising: The fixture assembly includes a clamping assembly and a first drive assembly (1) for moving the clamping assembly. The clamping assembly includes a mounting plate (2), a first jaw (3) for removing an old grinding head from a polishing head, a second jaw (4) for clamping a new grinding head and delivering it to the polishing head, and a positioning pressure bar (5) for pressing the new grinding head onto the polishing head. The first jaw (3), the second jaw (4), and the positioning pressure bar (5) are offset and mounted below the mounting plate (2).

2. The automatic grinding head changing mechanism according to claim 1, characterized in that, The first gripper (3) and the second gripper (4) each include a pair of gripping arms (6), and the pair of gripping arms (6) are provided with a second drive assembly for controlling the gripping arms (6) to clamp or release; the positioning pressure rod (5) is fixed under the mounting plate (2).

3. The automatic tool changer according to claim 1, wherein, The mounting plate (2) is also equipped with a tool setting device (7) for detecting whether the new grinding head is installed in place, and a universal nozzle (8) for air jet cleaning of the polishing head.

4. The automatic tool changer of claim 1, wherein, Multiple clamping assemblies are arranged in parallel, corresponding to the number of polishing heads. Multiple clamping assemblies are arranged side by side below a connecting plate (9). The connecting plate (9) is located below the first driving assembly (1). The first driving assembly (1) includes a three-axis drive for moving the connecting plate (9) along the XYZ direction.

5. A polishing machine, comprising a frame (10) and a polishing head, characterized in that, It also includes an automatic loading and unloading mechanism for automatic feeding and unloading, a secondary positioning mechanism for positioning raw materials and temporarily storing clinker, and an automatic grinding head changing mechanism as described in any one of claims 1-4. The secondary positioning mechanism is located outside the frame (10), the automatic loading and unloading mechanism is located on the frame (10) and is located between the secondary positioning mechanism and the polishing head, and the automatic grinding head changing mechanism is located on the frame (10) and above the polishing head.

6. The polishing machine of claim 5, wherein, The automatic loading and unloading mechanism includes a first frame (11), a second frame (12), and a suction cup claw (13). The frame (10) is provided with a third drive assembly (14) for driving the first frame (11) to move horizontally between the secondary positioning mechanism and the polishing head. The first frame (11) and the third drive assembly (14) are connected. The second frame (12) is mounted on the first frame (11) through a fourth drive assembly (15) for driving the second frame (12) to move up and down. The suction cup claw (13) is located at the lower end of the second frame (12).

7. The polishing machine of claim 6, wherein, The automatic loading and unloading mechanism also includes a sponge brush (16) for cleaning and polishing stations and a third frame (17) for mounting the sponge brush (16). The third frame (17) is mounted on the second frame (12) via a fifth drive assembly (18) for moving the third frame (17) up and down. A water supply channel is connected to the sponge brush (16).

8. The polisher of claim 7, wherein, The polishing head is provided in multiple ways, and the suction cup claws (13) are provided in multiple ways in parallel, corresponding to the number of polishing heads. The sponge brush (16) is also provided in multiple ways, corresponding one to one with the suction cup claws (13) and arranged side by side.

9. The polishing machine of claim 6, wherein, The first frame (11) is provided with a grinding head positioning fixture (19) for storing old grinding heads and new grinding heads.

10. The polishing machine of claim 5, wherein, The secondary positioning mechanism includes a raw material positioning area (20) and a clinker storage area (21). The raw material positioning area (20) and the clinker storage area (21) are set in a one-to-one correspondence. The raw material positioning area (20) includes a fixed long side reference side (2001) and a short side reference side (2002). A movable long side positioning clamping block (2003) is set on the opposite side of the long side reference side (2001). A movable short side positioning clamping block (2004) is set on the opposite side of the short side reference side (2002). The long side positioning clamping block (2003) and the short side positioning clamping block (2004) are detachable and have various different specifications.

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