Stamping apparatus for stamping shading film

A stamping apparatus for stamping a shading film includes a stamping head, at least one locking member and a sleeving ring. The sleeving ring defines an axial sleeving hole and includes a stamping portion formed on a distal end thereof and surrounding the axial sleeving hole. The sleeving ring is detachably sleeved on and locked to the stamping head via the at least one locking member. The stamping portion matches with the stamping head for cooperatively stamping the shading film.

BACKGROUND

1. Technical Field

The present disclosure generally relates to stamping apparatus, and particularly to a stamping apparatus for stamping a shading film.

2. Description of Related Art

Shading films are widely applied to and assembled within lens modules for eliminating stray light and flares. The shading films are commonly manufactured by a stamping process, namely, the shading film is stamped by a stamping apparatus. However, each type of the existing stamping apparatus can only stamp one corresponding specific type of the shading film, such that, the cost to manufacture the shading films is high.

Therefore, there is room for improvement within the art.

DETAILED DESCRIPTION

FIGS. 1 through 3show a first embodiment of a stamping apparatus10for stamping a first shading film30having a substantially step-shaped first center hole300. The stamping apparatus10includes a stamping head11, a sleeving ring12, a pair of elastic members13and a pair of locking members14. The sleeving ring12is detachably sleeved on and locked to the stamping head11via the pair of elastic members12and the pair of locking members14. As in use, the stamping apparatus10is capable of stamping different types of shading films by replacing different structures and types of sleeving rings12.

The stamping head11is substantially cylindrical. Two blind holes111are symmetrically defined in a periphery wall of one end of the stamping head11, radially. It is to be noted that, the number of blind holes111is not limited to two, it depends on an actual need. Namely, the number of blind holes can be one, three, four, or other numbers. The blind holes111are evenly disposed along a circumferential direction of one end of the stamping head11.

The sleeving ring12includes a main body120and an axial sleeving hole121defined through a substantially central portion of the main body120. An inner diameter of the axial sleeving hole121of the sleeving ring12matches with an outer diameter of the corresponding stamping head11, such that, the sleeving ring12sleeves on the stamping head11correspondingly. The main body120further defines two radial locking holes122and two axial holes123respectively communicating with the two radial locking holes122. The two radial locking holes122are oppositely and symmetrically defined in the main body120. One end of each radial locking hole122communicates with the axial sleeving hole121, an opposite end of each radial locking hole122communicates with one corresponding axial hole123. The two axial holes123are symmetrically defined in one end of the main body120corresponding to the pair of blind holes111of the stamping head11, and are positioned parallel to the axial sleeving hole121, and further communicate with the corresponding two radial locking holes122.

The other end of the main body120is substantially stepped shaft shaped, and has a step-shaped stamping portion1201surrounding the axial sleeving hole121. The step-shaped stamping portion1201matches with the stamping head11thereby cooperatively stamping the first shading film30to form the step-shaped first center hole300. The numbers of the radial locking holes122and the axial holes123are not limited to two, they depend on an actual need. Namely, the numbers of the radial locking holes122and the axial holes123can respectively be one, three, four, or any other number.

The locking member14includes a traverse locking tenon141and a longitudinal locking tenon142perpendicularly fixed to one end of the traverse locking tenon141. In the illustrated embodiment, the traverse locking tenon141and the longitudinal locking tenon142are both cylindrical and screwed together. The traverse locking tenon141is positioned within the corresponding radial locking hole122of the sleeving ring12and has a length longer than the length of the radial locking hole122. The longitudinal locking tenon142is assembled within the corresponding axial hole123of the sleeving ring12and has a length larger than the length of the axial hole123. In addition, a diameter of the longitudinal tenon142is less than that of the axial hole123, such that, the longitudinal tenon142is capable of being operated and moved within the axial hole123radially along a direction parallel to the radial locking hole122, together with the traverse locking tenon141.

The pair of elastic members13are respectively assembled within the pair of axial holes123and elastically resist against the corresponding locking member14. In the illustrated embodiment, one end of each elastic member13is fixed to an inner wall of the axial hole123, the other end is fixed to the corresponding locking member14, such that, the traverse locking tenon141of the locking member14is capable of moving within the radial locking hole122under an elastic force generated by the corresponding elastic member13.

When assembling the stamping apparatus10, the locking members14are first assembled to the sleeving ring12together with the corresponding elastic members13. The stamping head11is aligned with and inserted into the axial sleeving hole121of the sleeving ring12, away from the step-shaped stamping portion1201end of the sleeving ring12. The two locking members14are pushed away from the axial sleeving hole121of the sleeving ring12thereby facilitating the stamping head11passing through the axial sleeving hole121of the sleeving ring12. Meanwhile, the elastic members13are compressed to accumulate elastic force. When the blind holes111of the stamping head11align with the corresponding radial locking holes122of the sleeving ring12, the traverse locking tenons141of the locking members14are released and latch into the corresponding blind holes111of the stamping head11, under the elastic force generated by the elastic members13, such that, the sleeving ring12is tightly mounted to the stamping head11to finished the assembly of the stamping apparatus10.

During a stamping process, the assembled stamping apparatus10is assembled to a driver (not shown) to stamp the pre-stamped shading film30. The sleeving ring12is capable of being detached from the stamping head11quickly, after a stamping process, by pushing the corresponding locking members14away from the axial sleeving hole121of the sleeving ring12, replaces other sleeving rings12or cleans the sleeving ring12and the stamping head11.

FIGS. 4 through 6, show a second embodiment of a stamping apparatus20for stamping a second shading film40having a second center hole400. In the illustrated embodiment, the second center hole400has a substantially isosceles trapezoid cross section. The stamping apparatus20includes a stamping head21, a sleeving ring22, and a pair of locking members24. The sleeving ring22is detachably sleeved on the stamping head21via the pair of locking members24. In the illustrated embodiment, the locking member24is a bolt.

The stamping head21is substantially cylindrical, and includes a ring-shaped flange210formed on a periphery wall and coaxially positioned adjacent to one end of the stamping head21. Two first screw holes211are symmetrically defined through the flange210, and positioned at two sides of the stamping head21. The number of the first screw holes211is not limited to the two, it depends on the actual need. Namely, the number of the screw holes can be one, three, four, or any other number. The first screw holes211are evenly defined through the flange210and surround the stamping head21circumferentially.

The sleeving ring22has a substantially isosceles trapezoid cross-section, and includes a main body220defining an axial sleeving hole221. The main body220includes a connecting end surface223and a slantwise stamping surface225. The axial sleeving hole221is defined through the substantially central portion of the connecting end surface223. Two second screw holes222are symmetrically defined in the connecting end surface223of the main body220and positioned at two sides of the axial sleeving hole221, corresponding to the pair of first screw holes211of the flange210of the stamping head21. The number of the second screw holes222is not limited to two, it depends on an actual need. Namely, the number of the second screw holes222can be one, three, four, or the other numbers. The slantwise stamping surface225may be a roughened surface defining a plurality of sawteeth structures.

When assembling the stamping apparatus20, the sleeving ring22is first sleeved on the stamping head21, the connecting end surface223of the sleeving ring22contacts and resists against the flange210of the stamping head21. The first screw holes211of the flange210align with the corresponding second screw holes222of the sleeving ring22. The locking members24pass through the corresponding first screw holes211of the flange210and are finally screwed into the corresponding second screw holes222of the sleeving ring22, to finish the assembly of the stamping apparatus20. The sleeving ring22is capable of being detached from the stamping head21quickly, and replaced with other types of sleeving rings22to stamp different types of shading films.