TWI449599B - Rolling circle device - Google Patents

Description

Rounding fixture

The invention relates to a fixture, in particular to a rounding fixture for grinding a lens.

In the process of processing a workpiece such as an optical lens used in a digital camera, the spheronization process is an indispensable process. Its main function is to grind the square lens into a circular shape for loading into the lens barrel. Such optical workpieces are generally small in size, and it is too time-consuming and laborious to round them in a single round. In order to improve the production efficiency, in the actual production, most of the square workpieces are glued into a square column with UV glue (Ultraviolet), and the workpiece is fixed on the rounding fixture. The number of workpieces are rounded and then degummed and cleaned to produce a circular workpiece.

However, the main disadvantage of the above-mentioned spheronization method is that a glue such as UV glue is required for gluing and fixing the workpiece, and a complicated process such as degumming and cleaning is required after spheronization, which requires a lot of time, labor and cost, and has low production efficiency. Moreover, in the process of dissolving and cleaning, it is easy to cause adhesion and fouling of the workpiece due to incomplete gelation or incomplete cleaning.

In view of this, it is necessary to provide an efficient rounding jig.

The invention relates to a rounding jig for spheronizing a workpiece. The rounding jig includes a grinding wheel for grinding the workpiece. The rounding jig further includes a lifting mechanism, a conveyor belt and a rotating mechanism. The lifting mechanism is configured to drive the The workpiece moves toward or away from the grinding wheel. The conveyor belt is disposed between the grinding wheel and the rotating mechanism or the grinding wheel and the lifting mechanism. A plurality of openings are evenly distributed in the middle of the conveyor belt, and the workpiece is disposed on the opening of the belt. The rotating mechanism is configured to support the workpiece through an opening in the belt and drive the workpiece to drive the workpiece to be rounded by a grinding wheel.

Compared with the prior art, when the workpiece is rounded by the rounding jig, it is not necessary to use an adhesive to glue and fix the workpiece, which can eliminate the processes of de-gluing and cleaning in the traditional spheronization process, and obviously saves production time and The production cost can also prevent adverse effects such as adhesion and fouling of the adhesive to the workpiece, effectively improve the overall quality of the product, and realize the rapid operation of the flow through the conveyor belt.

100,200‧‧‧Rolling fixture

10, 70‧‧‧ Lifting mechanism

12, 72‧‧‧ Lifter

14, 74‧‧‧ transmission rod

20, 60‧‧‧ rotating mechanism

22‧‧‧Rotating parts

24‧‧‧Support rod

222‧‧‧ rod body

224‧‧‧ Main body

243, 743‧‧ ‧ cylinder

241‧‧‧ bottom

2240‧‧‧Bottom of the main body

30,80‧‧‧Conveyor belt

32‧‧‧ openings

40‧‧‧ Grinding wheel

42‧‧‧ Grinding Department

242‧‧‧ top

50‧‧‧Workpiece

Fig. 1 is a perspective view of a rounding jig according to a first embodiment of the present invention.

2 is a perspective view of a rounding jig according to a second embodiment of the present invention.

The rounding jig of the present technical solution will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 1, a rounding jig 100 according to a first embodiment of the present invention is used for spheronizing a workpiece 50. The rounding jig 100 includes a lifting mechanism 10, a rotating mechanism 20, a conveyor belt 30, a grinding wheel 40, and a vacuum pump (not shown). The rotating mechanism 20, the conveyor belt 30, and the grinding wheel 40 are disposed above the lifting mechanism 10 in order from bottom to top.

The lifting mechanism 10 is configured to drive the rotating mechanism 20 toward or away from the grinding The direction of the grinding wheel 40 moves. The lifting mechanism 10 includes a lifter 12 and a transmission rod 14. The drive rod 14 is driven by the lifter 12 to be raised and lowered relative to the lifter 12.

The rotating mechanism 20 includes a rotating member 22 and a support rod 24. In this embodiment, the rotating member 22 is a rotating motor. The rotating member 22 includes a rod body 222 and a main body portion 224 that is rotatable relative to the main body portion 224. The body portion 224 includes a bottom surface 2240. The bottom surface 2240 is supported on the transmission rod 14. The support rod 24 is a hollow columnar structure including a bottom portion 241 and a top portion 242 away from the bottom portion 241. The bottom end of the bottom portion 241 is fixedly sleeved on the rod body 222. The diameter of the top portion 242 is less than the length of the workpiece 50. In this embodiment, the support rod 24 is provided with a cylinder 243 with an inner hole communicating with the inner space of the support rod 24. The cylinder 243 with the inner hole is disposed perpendicular to the longitudinal direction of the support rod 24.

The conveyor belt 30 is disposed above the rotating mechanism 20, and a plurality of openings 32 are evenly distributed in the middle of the conveyor belt 30. The shape of the opening 32 corresponds to the shape of the workpiece 50. Since the shape of the workpiece 50 is square. In this embodiment, the shape of the opening 32 corresponds to a square shape, and the size is slightly smaller than the size of the workpiece 50. The opening 32 has a size greater than the size of the top 242 of the support bar 24. The conveyor belt 30 is transmitted at a distance equal to the distance between adjacent two openings 32.

The grinding wheel 40 is disposed above the conveyor belt 30, and the grinding wheel 40 includes a grinding portion 42.

The vacuum pump is connected to the inner cylinder 243 of the support rod 24.

The rounding jig 100 further includes a control unit (not shown) for controlling The lifting mechanism 10, the rotating mechanism 20, and the conveyor belt 30 are synchronized with the operation of the vacuum pump.

When assembled, one end of the transmission rod 14 is fixedly coupled to the lifter 12, and the other end is fixedly coupled to the bottom surface 2240 of the rotating mechanism 20. The bottom 241 of the support rod 24 is sealingly sleeved on the rod body 222 of the rotating mechanism 20, and the cylinder 243 with the inner hole is connected to the vacuum pump.

In use, the workpiece 50 is first placed over a plurality of openings 32 of the conveyor belt 30. First, the control unit issues an instruction to cause the vacuum pump to pump the cylinder 243, and the lifting mechanism 10 drives the rotating mechanism 20 to rise toward the grinding wheel 40 to make the support rod 24 Through the opening 32. Since the vacuum pump draws the cylinder 243, a negative pressure is generated in the hollow support rod 24, so that the workpiece 50 is firmly adhered to the workpiece 50 through the opening 32. It is attracted to the top of the top 242 of the support rod 24. At the same time, the lifting mechanism 10 is raised in the direction of the grinding wheel 40 until the workpiece 50 adsorbed at the top end of the top 242 of the support rod 24 is in contact with the grinding portion 42 of the grinding wheel 40. Then, the control unit issues an instruction to control the rotation of the rod 222 of the rotating member 22 to rotate the support rod 24 together to rotate the workpiece 50 to a circular shape on the grinding portion 42. The shaft 222 of the rotating member 22 stops rotating. At the same time, the vacuum pump stops pumping and removes the finished workpiece 50. The drive rod 14 of the lift mechanism 10 is retracted in a direction toward the lifter 12 such that the top 242 of the support rod 24 passes out of the opening 32. Finally, the control unit issues an instruction to move the conveyor 30 a distance. Repeat the above three steps. The spheronization of the plurality of workpieces 50 is completed.

It can be understood that the rounding jig 100 may not be provided with a vacuum pump and a venting passage 243, and a nozzle is directly disposed in the opening 32 of the conveyor belt 30, so that the nozzle is adsorbed. Do 50. It is not limited to this embodiment.

Referring to FIG. 2, the rounding jig 200 of the second embodiment of the present invention has the same structure as that of the rounding jig 100 of the first embodiment. The main difference is that the lifting mechanism 70 is provided. Above the rotating mechanism 60, it is disposed between the rotating mechanism 60 and the conveyor belt 80 at the same time. The transmission rod 74 of the lifting mechanism 70 is a hollow column-like structure that is sleeved on the lifter 72. The transmission rod 74 is provided with a cylinder with an inner hole communicating with the inner space of the transmission rod 74. 743. The cylinder 743 is disposed perpendicular to the length of the transmission rod 74.

When the workpiece is spheronized by the rounding jig, it is not necessary to use an adhesive to glue and fix the workpiece, which can eliminate the processes of dissolving and cleaning in the traditional spheronization process, obviously saving production time and production cost, and also preventing Adhesives have adverse effects on the adhesion and fouling of the workpiece, effectively improving the overall quality of the product, and at the same time, the rapid operation of the flow can be realized by means of a conveyor belt.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be covered by the following claims.

100‧‧‧Rolling fixture

10‧‧‧ Lifting mechanism

12‧‧‧ Lifter

14‧‧‧Drive rod

20‧‧‧Rotating mechanism

22‧‧‧Rotating parts

24‧‧‧Support rod

222‧‧‧ rod body

224‧‧‧ Main body

243‧‧‧Cylinder

241‧‧‧ bottom

2240‧‧‧Bottom of the main body

30‧‧‧Conveyor belt

32‧‧‧ openings

40‧‧‧ Grinding wheel

42‧‧‧ Grinding Department

242‧‧‧ top

50‧‧‧Workpiece

Claims (7)

A rounding fixture for rounding a workpiece, the rounding fixture comprising a grinding wheel for grinding a workpiece, wherein the rounding fixture further comprises a lifting mechanism, a conveyor belt and a rotating mechanism The lifting mechanism is configured to drive the workpiece to move toward or away from the grinding wheel, and the conveyor belt is disposed between the grinding wheel and the rotating mechanism or the grinding wheel and the lifting mechanism, the rotating mechanism comprises a rotating member and a hollow support rod, the rotating member includes a rod body, the support rod includes a bottom end and a top end, the bottom end of the support rod is sleeved on the rod body, and Rotating under the driving of the rod body, the rounding fixture further comprises a vacuum pump, the support rod is provided with a cylinder with an inner hole communicating with the inner space of the support rod, the cylinder is connected with the vacuum pump When the vacuum pump is evacuated by the cylinder, the workpiece is adsorbed on the top end of the support rod, and a plurality of openings are evenly distributed in the middle of the conveyor belt, the workpiece Placed on an opening of the drive belt, said drive belt passing through the support rod supporting the workpiece opening of the workpiece and the driving gear, so that the workpiece by the grinding wheel spheronization. The rounding jig of claim 1, wherein the conveyor belt is transported at a distance equal to the distance between the adjacent two openings. The rounding jig of claim 1, wherein the lifting mechanism comprises a lifter and a transmission rod, and the transmission rod is driven by the lifter to be lifted and lowered relative to the lifter, A rotating mechanism is disposed on the transmission rod. The rounding jig according to claim 1, wherein the rounding jig further comprises a control unit for controlling the movement of the lifting mechanism, the rotating mechanism, the conveyor belt and the vacuum pump. The rounding jig according to claim 1, wherein the cylinder with the inner hole is perpendicular to The support rod is disposed in the longitudinal direction. The rounding jig according to claim 1, wherein a diameter of a top end of the support rod is smaller than a length of the workpiece. The rounding jig according to claim 3, wherein the conveyor belt is disposed between the grinding wheel and the lifting mechanism, the lifting mechanism includes a transmission rod, and the transmission rod is a hollow column structure. It is sleeved on the lifter.