WO2013004102A1

WO2013004102A1 - Automatic grinding and polishing system for crystal blanks and auxiliary mechanism thereof

Info

Publication number: WO2013004102A1
Application number: PCT/CN2012/074703
Authority: WO
Inventors: 虞卫东
Original assignee: 浙江名媛工艺饰品有限公司
Priority date: 2011-07-06
Filing date: 2012-04-26
Publication date: 2013-01-10
Also published as: CN102240943A; CN102240943B

Abstract

The present invention relates to an automatic grinding and polishing system for crystal blanks, comprising: a first rotating frame, wherein a grinding station and a polishing station are provided surrounding the first rotating frame, and the first rotating frame can be rotated and positioned and is provided with at least two drive heads; a material loading station; a material unloading station; and at least one transfer mechanism capable of picking up and laying down a clamp and capable of transferring the clamp between the loading station, the unloading station, and the drive heads on the first rotating frame; wherein a grinding mechanism is provided on the grinding station and a polishing mechanism is provided on the polishing station. Further disclosed is an auxiliary mechanism used by the system. This technical solution can not only realize completely automatic grinding and polishing on a hemispherical bevel of crystal blanks, ensuring the quality of the grinding and polishing, but can also make full use of the advantages of existing types of machine, simplifying the complexities of mechanism actions, while production and maintenance are easy.

Description

Crystal blank automatic grinding and polishing system and its auxiliary machinery

Technical field

The invention relates to the field of grinding and polishing of crystal products, in particular to a crystal blank automatic grinding and polishing system for automatically grinding and polishing a crystal blank, and an auxiliary machine involved in the system.

Background technique

The existing multi-station crystal inclined surface grinding and polishing machine adopts a plurality of heads fixed with a rhinestone jig to perform multi-station processing. For example, the patent document published as CN201179615Y discloses an automatic loading and unloading rhinestone inclined surface grinding and polishing. The machine, including the frame, has two rotating frames side by side on the frame, and one head is arranged on each side of the rotating frame to form seven working positions, which are respectively a loading station, a front hemisphere rough grinding station and a front hemisphere polishing worker. Position, docking station, rear hemisphere rough grinding station, rear hemisphere polishing station, unloading station, loading station has a rhinestone blank feeding mechanism corresponding to the machine head, and the rough grinding station is provided with The corresponding disc grinding mechanism of the machine head has a disc throwing mechanism corresponding to the machine head at the polishing station, and a rhinestone semi-finished product cutting mechanism corresponding to the machine head is arranged at the unloading station, and the docking station is provided with and respectively The corresponding docking mechanism of the two rhinestone fixtures on the two rotating frames. The technical scheme does not require manual intervention in the entire rhinestone bevel grinding and polishing process, and realizes full automation of the rhinestone bevel grinding and polishing process, improves the processing efficiency, reduces the labor and tooling costs, and can effectively control the product quality. In the actual implementation process of the technical solution, the inventor found that the following problems are solved: First, at the docking station, the two clamps that are docked are respectively located on the two rotating frames, so that the manufacturing precision of the machine is very high and difficult. The docking accuracy is guaranteed; the machine is large in size and difficult to manufacture and transport; the third is the limited space for the docking station, the loading station and the loading station, and the complicated design of the structure affects the processing efficiency.

The patent document published as CN101758431A discloses a fully automatic rhinestone grinding and polishing machine which adopts a robot automatic conveying jig, the jig seat is arranged at each processing station, and the water jig jig is transported by the robot to the processing station, and the robot will The water drill jig and the clamp base are positioned, and after being positioned, the clamp cylinder is locked and fixed by the locking cylinder on the clamp seat, so that the clamp holder and the corresponding grinding and polishing processing mechanism of each station are independent of each other, thereby reducing the machine platform The overall manufacturing accuracy requirements and at the same time ensure the precise positioning of the rhinestone fixture relative to the grinding tool, avoiding the interaction and interference between the processing mechanisms at each station. However, because the fixture is flowed on the fixture holder of each processing station, for the crystal blank on a specific fixture, in order to ensure the consistency of processing at each station, it is necessary to ensure the fixture and each work. The consistency of the fixture on the fixture (including the consistency of the grinding angle, the angle of the transition surface, etc.), and the error accumulation amplification effect occurs once there is an error, which is especially important for grinding and polishing stations. Inconsistent positioning between the front and the rear, there will be a subsequent polishing process that does not polish the bevel surface processed in the previous grinding process, resulting in a large reduction in the polishing effect. Therefore, the jig of the flow in this technical solution is at each station fixture. Accurate positioning is crucial, and it is quite difficult for the prior art and the mechanism to achieve the consistency and mechanical automatic accurate positioning of the fixture and the fixture holders, and the mechanism is complicated and cumbersome. Problems such as failure and high maintenance costs. Similarly, the use of a complete machine structure also has problems such as large size and difficulty in transportation manufacturing.

Moreover, the above patent documents are all related to the automatic grinding and polishing process of the upper hemisphere bevel and the lower hemisphere bevel of the crystal blank, and for some crystal blanks, only one hemispherical bevel (the upper hemisphere bevel or the lower hemisphere bevel) needs to be processed. That is, the fully automated operation of the polishing and polishing apparatus in this aspect has not been seen in the prior art.

technical problem

In order to solve the above technical problems, one of the objects of the present invention is to provide an automatic grinding and polishing system for a crystal blank, which can not only realize a fully automatic grinding and polishing process of a hemispherical bevel of a crystal blank, but also ensure the quality of the grinding and polishing process, and can fully Utilizing the advantages of existing models, it simplifies the complexity of the mechanism and is easy to manufacture and maintain.

Another object of the present invention is to provide an auxiliary machine for the above-described crystal blank automatic grinding and polishing system.

Technical solution

In order to achieve the above object, the present invention adopts the following technical solutions:

A crystal blank automatic grinding and polishing system, comprising: a first rotating frame, at least one grinding station for grinding a crystal blank and at least one polishing of the crystal blank around the first rotating frame; a polishing station, the first rotating frame can be rotated and positioned and provided with at least two heads; the loading station is provided with a loading mechanism capable of fixing the crystal blank on the fixture; the loading station is provided with a blanking mechanism for detaching the crystal blank from the jig; and at least one capable of picking up and lowering the jig and capable of transferring it between the loading station, the unloading station, and the handpiece on the first revolving frame a transfer mechanism; wherein the grinding station is provided with a grinding mechanism, and the polishing station is provided with a polishing mechanism.

For a hemispherical bevel grinding and polishing of crystal blanks, it mainly involves feeding, grinding, polishing and cutting. In the technical solution, the conversion between the grinding process and the polishing process is realized by using the rotating frame and the machine head, because the clamp and the clamp seat are integrated with each other in the process, and there is no flow of the clamp, so the front grinding can be ensured. The processing consistency of the cutting process and the subsequent polishing process, however, the overall precision of the grinding and polishing process can be ensured by the manufacturing precision of the rotating frame, the machine head and the related grinding and polishing station mechanism; the grinding and polishing process is realized by the mechanical hand transfer mechanism and The conversion between the loading process and the blanking process, because the clamp is flowing in this process, the clamp rotation is matched with the clamp seat on the loading station or the blanking station, so it can be relied on the fixture holder of each station. The accuracy of the cooperation with the relevant institutions ensures that the loading and unloading can be carried out. Of course, the requirements of the matching precision of these processes can be slightly lower than that of the grinding and polishing process, which can completely replace the existing manual operation and realize full automation.

For a machine that realizes multi-station grinding and polishing in the form of a rotating frame and a handpiece, an existing device can be used, for example, a four-station rhinestone bevel grinding and polishing machine disclosed in the patent document of the inventor's publication No. CN101269472A and subsequent The mechanism disclosed in the patent document is disclosed, for example, in a multi-disc multi-grain gemstone polishing device disclosed in the patent document No. CN2715913Y, and a rhinestone grinding and polishing machine disclosed in the patent document No. CN2825203Y. It should be noted that the rotating frame may be in the form of a turntable or a bracket; the head may be mounted with a fixture or a plurality of clamps; the crystal blank may be a crystal ball blank or a diamond blank. Or the shaped crystal blank; the grinding mechanism is a flat disc grinding mechanism or a roller grinding mechanism, and the polishing mechanism is a flat disc polishing mechanism or a roller polishing mechanism, and the specific structure of each mechanism can be found in the above patent document.

From the above patent documents, it can be known that their jigs are mounted under the clamp fixing plate, and the mechanical hand transfer mechanism can be realized by picking up and lowering the jig from under the jig fixing plate, but the required mechanism action is complicated, Preferably, the head on the first rotating frame and the head on the second rotating frame respectively comprise a clamp fixing plate, and the clamp is placed on the fixing plate of the clamp and fixed by the clamp locking mechanism, thereby ensuring the mechanical transfer The mechanism of the organization is simple and reliable. How to set the fixture fixing plate on the handpiece, what specific structure the machine head can adopt, and which auxiliary mechanisms are also found can be found in the above patent documents.

Preferably, the clamp locking mechanism comprises a single dovetail slot disposed on an upper portion of the clamp fixing plate and matching with the dovetail at the bottom of the clamp, and a locking block is hinged at the bottom of the clamp fixing plate, and the upper end of the locking block is fixedly locked to the cylinder, and the lock is locked. The movable end of the tight cylinder is movably connected with the clamp fixing plate, and the lower end of the locking block protrudes from the lower part of the clamp fixing plate and is provided with a dovetail hook which cooperates with the single dovetail groove to lock the bottom dovetail of the clamp. Because the fixture is generally fed downward for grinding and polishing, the fixture will bear a large upward force during processing. Therefore, the fixture can be securely fixed by using the upper dovetail slot positioning reference and the lower dovetail hook locking fixture. To avoid the fixture from being detached from the fixture fixing plate during grinding and polishing, and to reduce the pressure specification requirements for the locking cylinder.

Preferably, at least one grinding station, at least one polishing station and at least one waiting station are disposed around the first rotating frame, and at least three heads are disposed on the first rotating frame. Waiting for the station to be vacant, no grinding and polishing processing, setting the waiting station can avoid the grinding and polishing processing time of the machine when the robot transfer mechanism transfers the fixture, thereby improving the processing efficiency.

Each station and the rotating frame and the transfer mechanism in the above technical solution can be disposed on one machine frame, but the machine table is bulky and is not conducive to manufacturing transportation. Therefore, preferably, the first rotation The rack and its grinding station, the polishing station and the waiting station are arranged on the same rack, and the loading station, the unloading station and the transfer mechanism are arranged on the same rack. It is divided into two machine racks to facilitate the manufacture and transportation. Of course, it can be further split. The loading station, the unloading station and the transfer mechanism are all made into a relatively independent machine rack. In addition, the loading station and the unloading station can be made into an integrated machine structure, and the two robots realize the transfer jig between the integrated machine and the grinding and polishing machine.

The above-mentioned transfer mechanism has a plurality of specific structures, which may be in the form of a track and a robot, that is, the transfer mechanism includes a track that is placed above the head on the loading station, the unloading station, and the first rotating frame. The upper slide is provided with a number of robots capable of picking up and lowering the clamp; the robot is used to pick up and lower the clamp, and the robot moves from one station to another along a fixed track, but such a mechanism uses a single robot along a single track There is a problem of inefficiency when moving between stations, and if multiple robots are used to transfer between two stations along their independent tracks, there are many problems with complicated driving mechanisms. Accordingly, preferably, the transfer mechanism includes a second rotating frame that is rotatable and positionable, and the second rotating frame is circumferentially provided with at least two robots capable of picking up and lowering the jig. The transfer mechanism in the form of a rotating frame and a robot has the advantages of simple structural action, high reliability and high efficiency, and the structure for transferring a plurality of robots along the circular orbit is substantially the same as that of the rotating frame and the robot. As for the specific structure of the manipulator, the patent documents disclosed in the publications CN101758433A, CN201863078U, CN201702632U can be found. As for the rotation and positioning mechanism of the first and second rotating frames, the prior art can be used, that is, the motor can be driven to rotate by a gear or a belt drive (including continuous rotation in a ring or reciprocating in a specific angle range). A positioning turntable is fixedly arranged on the frame, a pin hole is arranged on the positioning turntable, and a positioning pin driven by the positioning cylinder is arranged on the frame, and a positioning pin is inserted into the pin hole to realize positioning when the rotating frame is rotated into position. As for the above feeding mechanism and the unloading mechanism, the patent documents disclosed in the publications CN101758433A, CN201863078U, CN201833251U can be found.

An auxiliary machine for a crystal blank automatic grinding and polishing system, comprising a frame, the frame is provided with a rotating frame capable of rotating and positioning, and a waiting station, a feeding station and a loading device are respectively arranged around the rotating frame The working position, the rotating frame is provided with at least two robots capable of picking up and lowering the jig, wherein the loading station is provided with a loading mechanism, and the unloading station is provided with a cutting mechanism.

Beneficial effect

The invention adopts the above technical scheme, can not only realize the automatic grinding and polishing processing of a hemispherical inclined surface of the crystal blank, guarantees the quality of the grinding and polishing processing, and can fully utilize the advantages of the existing model, simplify the complexity of the mechanism action, and is easy to manufacture. And maintenance. It has the advantages of fully automated processing, good grinding and polishing quality, high processing efficiency, simple program control, low failure rate, easy maintenance, low manufacturing cost and convenient transportation.

DRAWINGS

1 is a schematic structural view of Embodiment 1;

2 is a schematic view showing the mounting structure of the jig of Embodiment 1;

Figure 3 is a partial cross-sectional view of Figure 2 .

BEST MODE FOR CARRYING OUT THE INVENTION

Example 1:

A crystal blank automatic grinding and polishing system as shown in FIG. 1 includes: a first rotating frame 2, and two grinding

stations

11 and 12 for grinding the crystal blank around the first rotating frame 2; a polishing station 13 for polishing the crystal blank and a waiting station 14, the first rotating frame 2 can be rotated and positioned and provided with four heads 21; the loading station 41 is provided with a crystal capable of a feeding mechanism for fixing the blank to the jig; a blanking station 42 provided with a blanking mechanism capable of detaching the crystal blank from the jig; and a picking and lowering jig and capable of loading it a transfer mechanism for transferring between the position 41, the blanking station 42 and the handpiece 21 on the first rotating frame 2; wherein the grinding

stations

11, 12 are provided with a grinding mechanism, the polishing station There is a polishing mechanism on the 13th.

In the present embodiment, as shown in FIGS. 2 and 3, the handpiece 21 on the first rotating frame 2 includes a clamp fixing plate 101, and the clamp 8 is placed on the clamp fixing plate 101 and fixed by a clamp locking mechanism. The clamp locking mechanism includes a single dovetail slot disposed on an upper portion of the clamp fixing plate 101 and matching with a dovetail at the bottom of the clamp 8. The bottom of the clamp fixing plate 101 is hinged with a locking block 102, and the upper end of the locking block 102 is fixedly locked to the cylinder. 103. The movable end of the locking cylinder 103 is movably connected to the clamp fixing plate 101. The lower end of the locking block 102 protrudes from the lower portion of the clamp fixing plate 101 and is provided with a dovetail that cooperates with the single dovetail groove to lock the bottom of the jig tail of the jig 8 hook. The first rotating frame 2 and its grinding

stations

11, 12, the polishing station 13 and the waiting station 14 are disposed on the same frame, the loading station 41, the blanking station 42 and the transfer mechanism Set on the same rack. The transfer mechanism includes a second revolving frame 3 that is rotatable and positionable, and the second revolving frame 3 is circumferentially provided with three robots 31 capable of picking up and lowering the jig 8. The grinding mechanism is a roller grinding mechanism, and the polishing mechanism is a roller polishing mechanism. The crystal blank is a diamond blank.

An auxiliary machine for a crystal blank automatic grinding and polishing system, comprising a frame, the frame is provided with a rotating frame 3 capable of rotating and positioning, and a waiting station 14 and a blanking station are respectively arranged around the rotating frame 3 42 and the loading station 41, the rotating frame 3 is provided with three robots 31 capable of picking up and lowering the jig, wherein the loading station is provided with a loading mechanism, and the unloading station is provided with a cutting mechanism.

Embodiments of the invention

Example 2:

A crystal blank automatic grinding and polishing system is different from Embodiment 1 only in that the transfer mechanism includes three robots capable of picking up and lowering the clamps, and the three robots are respectively disposed above the nose of the first rotating frame. (Waiting for station 14) to the top of the unloading station, above the unloading station, above the loading station, above the loading station to the three fixed rails above the head of the first rotating frame (waiting station 14) run. Others are the same as in the first embodiment.

Industrial applicability

Sequence table free content

Claims

A crystal blank automatic grinding and polishing system, characterized in that it comprises:

a first rotating frame (2), around which the first rotating frame (2) is provided with at least one grinding station (11, 12) for grinding the crystal blank and at least one polishing for polishing the crystal blank a station (13), the first rotating frame (2) is rotatable and positionable and provided with at least two handpieces (21);

a loading station (41), provided with a loading mechanism capable of fixing the crystal blank on the fixture;

a blanking station (42) provided with a blanking mechanism capable of detaching the crystal blank from the jig;

as well as, At least one transfer mechanism capable of picking up and lowering the jig and capable of transferring between the loading station (41), the unloading station (42), and the handpiece (21) on the first revolving frame (2);

Wherein, the grinding station (11, 12) is provided with a grinding mechanism, and the polishing station (13) is provided with a polishing mechanism.
A crystal blank automatic grinding and polishing system according to claim 1, wherein the head (21) on the first rotating frame (2) comprises a clamp fixing plate (101), and the clamp (8) is placed It is fixed on the clamp fixing plate (101) by a clamp locking mechanism.
A crystal blank automatic grinding and polishing system according to claim 2, wherein the clamp locking mechanism comprises a single piece disposed on the upper portion of the clamp fixing plate (101) and matching the bottom dovetail of the clamp (8). The dovetail slot, the bottom of the clamp fixing plate (101) is hinged with a locking block (102), the upper end of the locking block (102) is fixed to the locking cylinder (103), and the movable end of the locking cylinder (103) and the clamp fixing plate (101) The movable connection, the lower end of the locking block (102) protrudes from the lower portion of the clamp fixing plate (101) and is provided with a dovetail hook that cooperates with the single dovetail groove to lock the bottom dovetail of the clamp (8).
A crystal blank automatic grinding and polishing system according to claim 1, characterized in that at least one grinding station (11, 12) and at least one polishing station (13) are arranged around the first rotating frame (2). And at least one waiting station (14), the first rotating frame (2) is provided with at least three heads (21).
A crystal blank automatic grinding and polishing system according to claim 4, characterized in that said first rotating frame (2) and its grinding station (11, 12), polishing station (13) and waiting The station (14) is disposed on the same rack, and the loading station (41), the unloading station (42) and the transfer mechanism are disposed on the same rack.
A crystal blank automatic grinding and polishing system according to claim 1, wherein said transfer mechanism comprises a second rotating frame (3) rotatable and positionable, and the second rotating frame (3) is provided on the upper circumference thereof. At least two robots (31) capable of picking up and lowering the jig (8).
A crystal blank automatic grinding and polishing system according to claim 1, wherein said transfer mechanism comprises a straddle at a loading station (41), a blanking station (42), and a first rotating frame ( 2) A track above the upper head (21) on which a plurality of robots capable of picking up and lowering the jig are slid.
The crystal blank automatic grinding and polishing system according to claim 1, wherein the crystal blank is a crystal ball blank or a water diamond blank or a shaped crystal blank.
A crystal blank automatic grinding and polishing system according to claim 1, wherein the grinding mechanism is a flat disc grinding mechanism or a roller grinding mechanism, and the polishing mechanism is a flat disc polishing mechanism or a roller. Polishing mechanism.
An auxiliary machine for a crystal blank automatic grinding and polishing system, comprising a frame, the frame is provided with a rotating frame capable of rotating and positioning, wherein the rotating frame is provided with a waiting station and a blanking machine respectively And a loading station, the rotating frame is provided with at least two robots capable of picking up and lowering the clamp, wherein the loading station is provided with a loading mechanism, and the blanking station is provided with a blanking mechanism.