This application claims priority to Taiwan Application Serial Number 102144250, filed Dec. 03, 2013, which is herein incorporated by reference.
1. Technical Field
The present disclosure relates to a screwing machine. More particularly, the present disclosure relates to a screwing machine having a screw removal device.
2. Description of Related Art
A conventional suction-screwing machine generally operates as follows. In the conventional suction-screwing machine, a negative pressure is applied to suck a screw from a screw provider and then performs fastening process. The sucking and fastening processes are constantly repeated in the operation. A screwdriver is inside a nozzle of the suction-screwing machine.
However, when the suction-screwing machine repeats the sucking and fastening processes, suction problems may inevitably occur due to a misalignment of the screw provider, tolerance of the screws, mismatch between the nozzle and the screw, and so on. In case of conventional suction-screwing machine fails to fasten a screw resulting from these reasons, additional human resources and cost are required to solve the problem.
The disclosure provides a screwing machine including a machine frame, a screwing device, a suction device, a negative pressure judgment device, and a screw removal device. The screwing device is moveably located on the machine frame. The screwing device has a nozzle, and the screwing device is configured to fasten a screw into a workpiece. The suction device has a connecting tube communicated with the nozzle of the screwing device. When the suction device sucks the screw, the suction device drains an air inside the nozzle to enable a negative pressure inside the nozzle. The negative pressure judgment device is communicated with the air inside the nozzle. When the nozzle sucks the screw, the negative pressure judgment device determines whether a pressure value of the air inside the nozzle matches a default value. When the negative pressure judgment device determines that the air inside the nozzle matches the default value, the screwing device fastens the screw into the workpiece. The screw removal device includes an accommodation space, an opening, and a resilient stopper located at the opening. When the negative pressure judgment device determines that the air inside the nozzle does not match the default value, the screwing device moves to the screw removal device and makes the nozzle be aligned with and contact the resilient stopper, such that the resilient stopper removes the screw from the nozzle to make the screw drop into the accommodation space through the opening.
In an embodiment of the present disclosure, the resilient stopper is a brush.
The present disclosure further provides another screwing machine including a machine frame, a screwing device, a suction device, a blowing device, a negative pressure judgment device, and a screw removal device. The screwing device is moveably located on the machine frame. The screwing device has a nozzle, and the screwing device is configured to fasten a screw into a workpiece. The suction device has a connecting tube communicated with the nozzle of the screwing device. When the suction device sucks the screw, the suction device drains an air inside the nozzle to enable a negative pressure inside the nozzle. The blowing device is communicated with the air inside the nozzle through the connecting tube. The negative pressure judgment device is communicated with the air inside the nozzle. When the nozzle sucks the screw, the negative pressure judgment device determines whether a pressure value of the air inside the nozzle matches the default value. When the negative pressure judgment device determines that the air inside the nozzle matches the default value, the screwing device fastens the screw into the workpiece. The screw removal device includes an accommodation space and an opening. When the negative pressure judgment device determines that the air inside the nozzle does not match the default value, the screwing device moves to the screw removal device, and the blowing device pumps an air into the nozzle to blow off the screw from the nozzle, such that the screw drops into the accommodation space through the opening.
In an embodiment of the present disclosure, the screwing machine further includes two solenoid valves to respectively switch the suction device and the blowing device.
In an embodiment of the present disclosure, the screwing device further includes a screwdriver located above the nozzle. When the screwing device fastens the screw into the workpiece, the screwdriver passes through the nozzle and operatively connects the screw. Then, the screwdriver drives the screw to rotate and makes the screw be fastened into the workpiece.
The present disclosure further provides an automatically troubleshooting method including following steps: (A) utilizing a nozzle of a screwing device to suck a screw, and the screwing device is configured to fasten the screw into a workpiece; (B) utilizing a negative pressure judgment device to determine whether a pressure value of the air inside the nozzle matches the default value, when the negative pressure judgment device determines that the air inside the nozzle matches a default value, the screwing device drives the screw into the workpiece; and (C) moving the screwing device to a screw removal device to remove the screw when the negative pressure judgment device determines that the air inside the nozzle does not match the default value.
In an embodiment of the present disclosure, the step (A) further includes: utilizing a suction device of the screwing machine to drain out the air inside the nozzle to make the pressure inside the nozzle be negative, moving the screwing device to make the nozzle be aligned with and to suck the screw, moving the screwing device to align the screw with the workpiece, and utilizing a screwdriver of the screwing device to drive the screw to rotate and make the screw be fastened into the workpiece.
In an embodiment of the present disclosure, the step (B) further includes: when the screwing device moves to the screw removal device to remove the screw, aligning and contacting the nozzle with a resilient stopper of the screw removal device, such that the resilient stopper removes the screw of the nozzle, and thus the screw drops into an accommodation space of the screw removal device through an opening of the screw removal device.
In an embodiment of the present disclosure, the step (B) further includes: when the screwing device moves to the screw removal device removes the screw, utilizing a blowing device to pump an air into the nozzle to blow off the screw from the nozzle, such that the screw drops into an accommodation space of the screw removal device through an opening of the screw removal device.
Accordingly, the disclosure provides the screwing machine and the automatically troubleshooting method to effectively improve a problem that w the screwing machine always needs a staff to solve the faults occurred when the screwing machine fastens the screws. The screwing machine has a screw removal device. When the negative pressure judgment device determines that the pressure of the air inside the nozzle does not match the default value, the screwing device moves to the screw removal device and removes off the screw from the nozzle. As a result, it does not need the staff to remove off the screw from the nozzle. The disclosure can be used in mass production, increase the producing yield, save human force, and increase the value of the product consequently.
It is to be understood that both the foregoing general description and the following detailed description are by examples, and are intended to provide further explanation of the disclosure as claimed.
The disclosure can be more fully understood by reading the following detailed description of the embodiment, with reference made to the accompanying drawings as follows:
Reference will now be made in detail to the present embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
In order to solve a problem that a conventional screwing machine may cause a screwing problem, the present disclosure provides a screwing machine to improve the problem.
When the nozzle 180 sucks the screw 200, the screwing device 120 is aligned with the screw 200 of the screw providing machine 160, the suction device 130 drains an air inside the nozzle 180, to enable a negative pressure inside the nozzle 180. Then, the nozzle 180 moves down to suck the screw 200. When the nozzle 180 sucks the screw 200 regularly, a pressure value of the air inside the nozzle 180 is in a certain range of negative pressure value. When the nozzle 180 sucks the screw 200 irregularly, an air leaks into the nozzle 180 from outside. Consequently, the pressure value of the air inside the nozzle 180 is greater than the range of negative pressure value. In brief, the disclosure utilizes the negative pressure judgment device 140 to determine the pressure of the air inside the nozzle, so as to determine whether the nozzle 180 sucks the screw 200 regularly.
When the negative pressure judgment device 140 determines the pressure of the air inside the nozzle 180 matches a default value, the screwing device 120 moves to be above the workpiece 170 and performs fastening. The screwing device 120 includes a screwdriver 210 located on the nozzle 180. When the screwing device 120 fastens the screw 200 into the workpiece 170, the screwdriver 210 passes through the nozzle 180 and operatively connects the screw 200, and then the screwdriver 210 drives the screw 200 to rotate and makes the screw be fastened into the workpiece 170.
Step S101: utilizing a nozzle of a screwing device to suck a screw, and the screwing device is configured to fasten the screw into a workpiece.
Step S102: utilizing a negative pressure judgment device to determine whether a pressure value of the air inside the nozzle matches the default value. In the step S103, when the negative pressure judgment device determines that the air inside the nozzle matches a default value, the screwing device drives the screw into the workpiece.
Step S104, moving the screwing device to a screw removal device to remove the screw when the negative pressure judgment device determines that the air inside the nozzle does not match the default value.
After the screw is removed, the screwing device is back to the step S101 to perform fastening. The steps described above and relative actions thereof are described in the embodiment of
In an embodiment of the present disclosure, the step S101 further includes: utilizing a suction device of the screwing machine to drain out the air inside the nozzle to make the pressure inside the nozzle be negative, moving the screwing device to make the nozzle be aligned with and to suck the screw, moving the screwing device to align the screw with the workpiece, and utilizing a screwdriver of the screwing device to drive the screw to rotate and make the screw be fastened into the workpiece.
Accordingly, the disclosure provides the screwing machine and the automatically troubleshooting method to effectively improve a problem that w the screwing machine always needs a staff to solve the faults occurred when the screwing machine fastens the screws. The screwing machine has a screw removal device. When the negative pressure judgment device determines that the pressure of the air inside the nozzle does not match the default value, the screwing device moves to the screw removal device and removes off the screw from the nozzle. As a result, it does not need the staff to remove off the screw from the nozzle. The disclosure can be used in mass production, increase the producing yield, save human force, and increase the value of the product consequently.
Although the present disclosure has been described in considerable detail with reference to certain embodiments thereof, other embodiments are possible. Therefore, the spirit and scope of the appended claims should not be limited to the description of the embodiments contained herein.
It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present disclosure without departing from the scope or spirit of the disclosure. In view of the foregoing, it is intended that the present disclosure cover modifications and variations of this disclosure provided they fall within the scope of the following claims.
Number | Date | Country | Kind |
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102144250 | Dec 2013 | TW | national |