Patent Application
20050279202
The present invention relates to a punching apparatus and more particularly to a punching apparatus making serial punching.
A conventional manual punching apparatus for creating through holes in an object is illustrated in
For solving the bulky and exertive problems, a punching apparatus making serial punching was developed, as disclosed in U.S. patent application Ser. No. 5,463,922 and shown in
In this punching apparatus, a sustaining bar 220 is coupled to and crossing each pin body 221. The sustaining bar 220 is sequentially guided up and down with the movement of the sliding member 21. When the sustaining bar 220 is pressed down by the sliding member 21, it transmits the corresponding pin body 221 to move downward, thereby punching through the object 10. Afterwards, the sustaining bar 220 is lifted up to transmit the corresponding pin body 221 to move back to the standby position. As a result, the joint of the sustaining bar 220 and the pin body 221 will be greatly subjected to forcible action and thus subject to distortion or damage.
Therefore, the present invention provides a punching apparatus involving in minimized forcible action on the sustaining bar.
The present invention relates to a punching apparatus, which comprises a platform for placing thereon an object to be punched; a rail body coupled to the platform and having two oppositely arranged rail elements and a cutting-pin receiving space between the two rail elements; a cutting tool including a plurality of cutting pins movably installed in the cutting-pin receiving space; a sliding member slidable along the rail body; and a first sustaining member disposed between the rail elements and carried by the sliding member for sequentially forcing the cutting pins to protrude toward the platform, thereby creating through holes in the object.
In an embodiment, the rail body includes guiding elements arranged at the rail elements for guiding the movement of the cutting pin in the cutting-pin receiving space.
In an embodiment, the guiding elements are guiding slots symmetrically arranged in the rail elements and elongated in a direction conforming to the moving direction of the cutting pins.
In an embodiment, each of the cutting pins is cross-shaped and includes a pin body for punching through the object and a traverse bar having two ends thereof protruding from and moving in opposite two of the guiding slots for guiding the pin body between a standby position and a punching-through position, and the first sustaining member directly depresses and moves the pin body from the standby position to the punching-through position.
In an embodiment, the pinching apparatus further comprises a second sustaining member for pushing the traverse bar up so as to retract the pin body from the punching-through position to the standby position after the pin body has been depressed by the first sustaining member to punch through the object. Each of the two guiding opposite slots preferably has a width approximating to a diameter of the traverse bar engaging therewith so as to exhibit a certain level of frictional force between the traverse bar and walls of the two opposite guiding slots, thereby stopping the traverse bar from arbitrarily moving in the two opposite slots before being pushed by the first or second sustaining member.
In an embodiment, the second sustaining member includes a spring sleeved on the pin body under the traverse bar, wherein the spring is compressed by the traverse bar when the first sustaining member depresses and moves the pin body from the standby position to the punching-through position and restoring to push the traverse bar up when the force for protruding the cutting pins toward the platform is released.
In an embodiment, the pinching apparatus further comprises a second sustaining member coupled to the sliding member and disposed downstream of the first sustaining member in a first sliding direction of the sliding member on the rail body for sequentially forcing the cutting pins to retract away from the platform.
In an embodiment, the pinching apparatus further comprises a third sustaining member coupled to the sliding member and symmetrically arranged relative to the first sustaining member so that the third sustaining member is disposed downstream of the first sustaining member when the sliding member moves along the rail body in a second sliding direction opposite to the first sliding direction, thereby sequentially forcing the cutting pins to retract away from the platform.
In an embodiment, each of the second and third sustaining members has a surface of an inclined curve for gradually pushing the cutting pins up. Alternatively, each of the second and third sustaining members has a surface of an inclined plane for gradually pushing the cutting pins up.
In an embodiment, the punching apparatus further comprises a second sustaining member coupled to the cutting pins for forcing the cutting pins to retract away from the platform as soon as the force for protruding the cutting pins toward the platform is released. For example, the second sustaining member is a spring element.
In an embodiment, the first sustaining member includes a handle disposed at an exterior side of the sliding member for exerting thereon a depressing force; a roller rotatably disposed at an interior side of the sliding member and sustaining against the top surface of the cutting pins for sequentially forcing the cutting pins to protrude toward the platform; and a shaft penetrating through the roller and the sliding member and coupled to the handle for depressing the roller against the cutting pins when the depressing force is exerted on the handle.
Preferably, the first sustaining member further comprises a resilient element interfacing the handle with the sliding member, and the resilient is deformable in response to the depressing force exerted on the handle and restoring to retract the roller from the cutting pins when the depressing force is released from the handle. The resilient element, for example, is a spring element.
In an embodiment, the sliding member has a slot elongated in a direction conforming to a moving direction of the handle and roller so that the sliding member does not move with the handle and roller in response to the depressing force.
The present invention also relates to a punching apparatus, which comprises a rail body arranged therein and exposed therefrom a series of cutting pins; a sliding member slidable along the rail body; a handle disposed at an exterior side of the sliding member for exerting thereon a depressing force; and a roller rotatably disposed at an interior side of the sliding member and sustaining against the top surface of said cutting pins for sequentially forcing the cutting pins to protrude toward an object to be punched in response to the depressing force.
The present invention may best be understood through the following description with reference to the accompanying drawings, in which:
The present invention will now be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only; it is not intended to be exhaustive or to be limited to the precise form disclosed.
Please refer to
The rail body 30 includes two oppositely arranged rail elements 301, i.e. rail walls, and has a cutting-pin receiving space 302 between the rail elements 301. The sliding member 320 has two hooked walls 3202 for engaging with and sliding along the two rail elements 301, respectively. Outside the sliding member 320, a handle 329 is arranged. Further, a roller 322 is disposed inside the sliding member 320 and a spring 328 is disposed between the sliding member 320 and the handle 329. The sliding member 320 has elongated slots 3201 arranged in the hooked walls 3202 so that a shaft 321 can penetrate through the roller 322 and the elongated slots 3201 of the sliding member 320 and coupled to the handle 329. In this configuration, the roller 322 can be transmitted down to sustain against the top of the cutting pins 311 of the cutting tool 31 when a depressing force F1 is exerted on the handle 329. Since the elongated slots 3201 extends in a direction conforming to a moving direction of the handle 329 and roller 322, the sliding member 320 does not move downwards with the handle 329 and roller 322.
When the depressing force F1 is exerted on the handle 329, the roller 322 is transmitted down via the shaft 321 so as to sustain against and push down one or two of the cutting pins 311, depending on the size of the roller 322. The pushed cutting pin protrudes toward the platform 33 so as to punch through the object to create a hole. Then, the roller 322 rotates and moves with the sliding member 320 to depress another cutting pin 311 to create another hole in response to a forwardly moving force F2 exerted on the handle 329. Therefore, a series of through holes can be sequentially created in the object in the journey of the roller 322 from one end of the rail body 30 to the other. After the journey ends, the depressing force F1 and forwardly moving force F2 are removed. Meanwhile, the previously compressed spring 328 due to the depressing force F1 restores to push the handle 329 up. Accordingly, the roller 322 is also transmitted up via the shaft 321 so as to separate from the cutting pins 311.
During the journey of the roller 322 from one end of the rail body 30 to the other, once the roller 322 moves forwards, the preceding pushed cutting pin 311 in a punching-through position is released and should be pushed back to a standby position. For achieving this purpose, a sustaining member 323 coupled to the sliding member 320 and arranged downstream of the roller 322 is provided. In this embodiment, each of the cutting pins 311 has a shape similar to that shown in
In the two rail elements 301, pairs of guiding slots 3010 are arranged. Two ends of the traverse bar 220 penetrate through a pair of the guiding slots 3010 and protrude from the two rail elements 301, respectively. Each of the guiding slots 3010 preferably has a neck portion 30101 whose width approximates to a diameter of the traverse bar 310 engaging therewith so as to exhibit a certain level of frictional force between the traverse bar 310 and the neck portion 30101, thereby stopping the traverse bar 310 from arbitrarily moving in the guiding slot 3010 before being pushed by the roller 322. When the roller 322 sustains against the top surface of one of the pin bodies 3111 and forces that cutting pin 311 down, the traverse bar 310 of that cutting pin 311 will be forced through the neck portion 30101 of the corresponding guiding slots 3010 and move down to punch through the object. On the other hand, when the traverse bar 310 is pushed up to retract the pin body 311 away from the platform 33 by the sustaining member 323, the cutting pin 311 can be fixed at the standby position with the traverse bar 310 stuck by the neck portion 30101.
The sustaining members 323 and 324 have curved surfaces in the above-mentioned embodiment. Alternatively, the surfaces 423 and 424, as shown in
In a further embodiment with reference to
It is understood from the above embodiments that the present invention involves in minimized forcible action by exerting a depressing force on the top surfaces of the cutting pins. Furthermore, the punching-pin moving operation is made smooth due to implementation with a rotating roller.
While the invention has been described in terms of what are presently considered to be the most practical and preferred embodiment, it is to be understood that the invention needs not be limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and structures.
| Number | Date | Country | Kind |
|---|---|---|---|
| 093117506 | Jun 2004 | TW | national |
