JP4303912B2 - Conveyance positioning method and apparatus for conveyed object - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a conveyance positioning method and apparatus for an object to be conveyed such as a carrier tape or an electric circuit printing film that accommodates and conveys electronic components.
[0002]
[Prior art]
A carrier tape that accommodates and conveys electronic components is formed as shown in FIG. 4, and a conveying device that sends the carrier tape is configured as shown in FIG. The carrier tape 1 has sprocket holes 2 formed at equal intervals on one side edge along the longitudinal direction, and concave portions 3 for storing electronic components are provided on the carrier tape 1 at equal intervals.
[0003]
The conveying device 4 includes a sprocket wheel 5, and a large number of sprockets 6 that are engaged with the sprocket holes 2 of the carrier tape 1 are provided on the outer peripheral surface of the sprocket wheel 5. The transport device 4 includes a drive mechanism such as a servo motor or a stepping motor. The sprocket wheel 5 is intermittently rotated from the drive mechanism via a speed reduction mechanism such as a gear transmission to transport the carrier tape 1 by one pitch. It is supposed to be.
[0004]
When the carrier tape 1 is stopped during intermittent rotation, that is, when the electronic component is stored in the concave portion 3 of the carrier tape 1 during one step corresponding to one-pitch conveyance amount, or after the sprocket wheel 5 is rotated Work such as characteristic measurement is being performed. Further, taping of electronic parts and positioning to a printing position are performed.
[0005]
[Problems to be solved by the invention]
However, if the sprocket wheel 5 is intermittently rotated at a high speed due to the recent demand for higher speed, a drive mechanism having a large acceleration / deceleration torque and high-speed response is required. Further, since the speed reduction mechanism has backlash, when the carrier tape 1 is stopped, the stop position shifts and a system trouble occurs. Furthermore, since the sprocket 6 of the sprocket wheel 5 must match the pitch of the sprocket hole 2 of the carrier tape 1, when the carrier tape 1 having a different pitch of the sprocket hole 2 is transported, the sprocket wheel 5 itself is replaced. There is a problem of having to.
[0006]
If a servo motor or a stepping motor is provided directly connected to the shaft of the sprocket wheel 5, the backlash will be eliminated, but the apparatus itself becomes expensive and the resolution of rotational positioning is limited.
[0007]
The present invention has been made paying attention to the above circumstances, and the object of the invention is to make the transport and positioning mechanism of the transported object compact so that high-speed response and positioning accuracy are high, and the aperture An object of the present invention is to provide a low-cost transport object positioning method and apparatus capable of handling transport objects with different pitches.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to a first aspect of the present invention, there is provided a sheet-like object to be conveyed having an opening, conveying means for conveying and stopping the object to be conveyed, and restraining the object to be conveyed. and restraining means for releasing the constraint, e Bei and positioning means for positioning the carried object, the conveying means, of the two rollers for clamping the transported object, which at least one roller is driven to rotate , the restraining means restrains by holding the conveyed object by the two rollers, at least one roller of the two rollers is intended to release the restraint spaced from the conveyed object, before Symbol positioning means When the restraint of the transported object is released, the transported object is positioned by inserting a positioning pin having a conical head into the opening of the transported object. In the transfer positioning device That.
[0011]
[Claim 2] A sheet-like object to be transported having an opening, a conveying means for conveying and stopping the object to be conveyed, a restraining means for restricting and releasing the object to be conveyed, and the object to be conveyed and a positioning means for positioning, before Symbol conveying means, of the two rollers for holding the conveying object, one is a sprocket wheel for conveying the conveying object, by holding a transported object by two rollers restraint and is intended to release the restraining said sprocket wheel as a free rotation, said positioning means, when said restraint of the transported object has been released, the object to be transported positioning pin having a conical head and inserted into openings of the object, it characterized that you for positioning the object to be conveyed.
[0012]
Claim 3 is a sheet-like object to be conveyed having an opening, a conveying means for conveying and stopping the object to be conveyed, a restraining means for restricting and releasing the object to be conveyed, and the object to be conveyed and a positioning means for positioning, before Symbol conveying means is a gripping equipment that moves while gripping an end portion of the conveyed object, said positioning means, when the restraint of the transported object has been released characterized that you by inserting the positioning pin having a conical head on the opening of the object to be conveyed for positioning the object to be conveyed.
[0013]
Claim 4 is a sheet-like object to be conveyed having an opening, a conveying means for conveying and stopping the object to be conveyed, a restraining means for restricting and releasing the object to be conveyed, and the object to be conveyed and a positioning means for positioning said restraining means is provided in the transfer path for conveying the conveying object, Ri vacuum suction means der to vacuum suction an object to be conveyed, said positioning means of said object to be conveyed When the restraint is released, the object to be conveyed is positioned by inserting a positioning pin having a conical head into the opening of the object to be conveyed .
[0014]
Claim 5 is characterized in that the opening of the position-decided Me pin and the conveyed object of claim 1-4 is substantially the same diameter.
[0015]
6. conveys a sheet-like conveyed object having an opening, in the conveyance method of positioning the conveyed object for positioning by stopping conveyance at a predetermined position, before Symbol transported object during stopping of the conveying object temporarily restrained by pinched by the two rollers, then, after the two rollers has canceled the restriction of the transported object, position-decided rice by inserting the positioning pin into the opening of the object to be conveyed, In another aspect of the present invention, there is provided a method for positioning a transported object, wherein the restraint of the transported object is repeated at least once more.
[0016]
According to the above-described configuration, the object to be conveyed can be restrained and released by the conveying means for conveying the object to be conveyed. After the object is conveyed and stopped at a predetermined position, the restriction is released, and the positioning pin By inserting the conical portion into the opening of the conveyed object, the positional deviation of the conveyed object can be corrected and positioned.
[0017]
In other words, the transported object is restrained and transported by the transport means, stopped at a predetermined position, the restraint is released, and the conical portion of the positioning pin is inserted into the opening of the transported object so that the position of the transported object is shifted. By repeating the operation of correcting and positioning, the object to be transported can be reliably transported and positioned.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0019]
1A and 1B show a first embodiment of a conveyance positioning apparatus for a conveyed object, wherein FIG. 1A is a vertical side view in a state during tape conveyance, FIG. 1B is a vertical side view in a tape conveyance stop state, and FIG. FIG. 4D is a longitudinal side view of the state in which the positioning operation is started, and FIG.
[0020]
As shown in FIG. 1, the upper surface of the base 11 of the transport positioning apparatus is formed on a transport surface 12 that transports a carrier tape 1 as a transported object. An upper roller 13 and a lower roller 14 that are conveying means are provided opposite to each other on the tape conveying direction side of the base 11. The upper roller 13 is continuously rotated by a driving means (not shown), and the upper roller 13 is supported by a first actuator 15 so as to be movable up and down. When the upper roller 13 is pushed down by the first actuator 15, the carrier tape 1 is sandwiched between the lower roller 14 and the carrier tape 1 is conveyed in the direction of arrow A by the frictional force. When the actuator 15 is pulled up, the frictional force is lost, and the carrier tape 1 stops being conveyed.
[0021]
The base 11 is provided with a through hole 16 facing the sprocket hole 2 as an opening of the carrier tape 1. A hall sensor 17 is provided on the upper part facing the through hole 16. A second actuator 18 is provided in the lower part of the base 11 facing the through hole 16. The second actuator 18 moves the positioning pin 19 inside the through hole 16 up and down. The positioning pin 19 has a conical portion 19b at the tip of the cylindrical portion 19a. The positioning pin 19 is inserted into the sprocket hole 2 of the carrier tape 1 to correct the positional deviation of the carrier tape 1. Yes.
[0022]
Further, the second actuator 18 is provided with an upper limit sensor 20a and a lower limit sensor 20b for detecting the vertical movement of the positioning pin 19. The carrier tape 1 can be transported only when the lower limit sensor 20b is in the detection state. When the upper limit sensor 20a is in the detection state, it can be confirmed that the positioning of the carrier tape 1 has been completed.
[0023]
Next, the operation of the transport positioning apparatus for transported objects will be described.
[0024]
As shown in FIG. 1A, since the upper roller 13 and the lower roller 14 are continuously rotated by the driving means, when the upper roller 13 is pushed down by the first actuator 15, the carrier between the lower roller 14 and the lower roller 14 is shown. The tape 1 is clamped and the carrier tape 1 is conveyed in the direction of arrow A by the frictional force.
[0025]
When the hall sensor 17 detects that the sprocket hole 2 has reached the stop position, the upper roller 13 is pulled up by the first actuator 15 as shown in FIG. Accordingly, the frictional force is lost and the conveyance of the carrier tape 1 is stopped. At this time, the position of the sprocket hole 2 at the stop position deviates from the positioning position δ due to a response delay from when the stop position is detected by the hall sensor 17 until the actual stop.
[0026]
As shown in (c), the carrier tape 1 is stopped and the second actuator 18 is actuated to raise the positioning pin 19 so that the conical portion 19b is first inserted into the sprocket hole 2, but the carrier tape 1 Because of the shift δ of the stop position, one side of the conical portion 19b comes into contact with the sprocket hole 2.
[0027]
As shown in (d), when the positioning pin 19 is further raised, the carrier tape 1 is displaced in the direction of arrow B, and the cylindrical portion 19a of the positioning pin 19 is fitted into the sprocket hole 2 to complete the positioning of the carrier tape 1.
[0028]
By repeating the above operation, the carrier tape 1 can be accurately intermittently conveyed one pitch at a time.
[0029]
When the carrier tape 1 is lifted from the base 11 when the positioning pin 19 is lifted and inserted into the sprocket hole 2, a holding plate 21 is provided as shown in the modification of FIG. You may make it prevent floating.
[0030]
Further, although the upper roller 13 is moved up and down by the first actuator 15, the lower roller 14 may be moved up and down by the first actuator 15. Furthermore, although it is preferable that both the upper roller 13 and the lower roller 14 are rotated by the driving means, either one may be rotationally driven and the other may be freely rotated.
[0031]
The lower roller 14 may be a sprocket wheel. In this case, since the restraint of the carrier tape 1 is not released even when the upper roller 13 is raised, it is necessary to release the restraint by allowing the sprocket wheel to freely rotate.
[0032]
FIG. 3 shows a second embodiment, and is a longitudinal side view of a printing apparatus that prints on a tape while transporting the tape.
[0033]
A long tape 31 as a transported object wound in a roll shape is provided with a large number of positioning holes 32 at a constant pitch in the longitudinal direction. The end portion of the tape 31 is vacuum-sucked by a gripping device 33 as a conveying means and is conveyed in the direction of arrow C. In the middle of the transport path 34 of the tape 31, a base 35 and a storage container 36 are installed adjacent to each other in the tape transport direction.
[0034]
The base 35 has a width facing the entire width direction of the tape 31, and a vacuum chamber 37 is provided inside the base 35. The vacuum chamber 37 is provided with a vacuum suction port 38, and the vacuum suction port 38 communicates with a vacuum suction source 40 such as a vacuum pump through a pipe 39 having a switching valve 39a.
[0035]
The upper surface of the base 35 is formed on the transport surface of the tape 31, and this transport surface communicates with the vacuum chamber 37 through the suction surface 41 made of a porous body. Therefore, when the vacuum chamber 37 is being vacuumed, the tape 31 is vacuum-sucked to the suction surface 41 and the tape 31 is restrained.
[0036]
The base 35 is provided with a through hole 42 that faces the positioning hole 32 of the tape 31. An actuator 43 is provided below the base 35 facing the through hole 42. The actuator 43 moves the positioning pin 44 inside the through hole 42 up and down. The positioning pin 44 has a conical portion 44b at the tip of the cylindrical portion 44a. The positioning pin 44 is inserted into the positioning hole 32 of the tape 31 to correct the positional deviation of the tape 31.
[0037]
In addition, the actuator 43 is provided with an upper limit sensor 45a and a lower limit sensor 45b for detecting the vertical movement of the positioning pin 44. The tape 31 can be transported only when the lower limit sensor 45b is in the detection state, and when the upper limit sensor 45a is in the detection state, it can be confirmed that the positioning of the tape 31 has been completed.
[0038]
Further, a plate surface 47 of a printing mechanism 46 for printing on the tape 31 is provided above the base 35 so as to be movable up and down. A tape cutter 48 is provided between the base 35 and the storage container 36 so as to be movable up and down.
[0039]
Next, the operation of the second embodiment will be described.
[0040]
When the switching valve 39a is open to the atmosphere, the vacuum chamber 37 is at atmospheric pressure. In this state, when the end of the tape 31 is gripped by the gripping device 33 and pulled out by a certain amount, the tape 31 moves in the direction of arrow C. Stops after being transported. At the same time as the tape 31 is stopped, the actuator 43 is operated to raise the positioning pin 44, and the conical portion 44b is first inserted into the positioning hole 32. However, because of the deviation of the stop position of the tape 31, one side of the conical portion 44b. Comes into contact with the positioning hole 32. When the positioning pin 44 is further raised, the tape 31 is moved by an amount shifted by the positioning pin 44 in the front-rear direction of the conveying direction, and the cylindrical portion 44a of the positioning pin 44 is fitted into the positioning hole 32, thereby completing the positioning of the tape 31. .
[0041]
If the area of the printing portion is large, that is, if the area of the tape 31 for positioning is large, the insertion of the pin 44 into the positioning hole 32 only distorts the tape 31 in the vicinity of the pin 44 and the entire printing portion of the tape 31 is deformed. It may not move to the positioning position. In this case, when the switching valve 39a is switched to the vacuum state, the vacuum chamber 37 is vacuum-sucked by the vacuum supply source 40, and the tape 31 is vacuum-sucked and restrained by the suction surface 41. At this time, the tape 31 of the printing unit is used. Is moved by the reaction force of the positioning pin 44 and positioned.
[0042]
If positioning of the tape 31 is not completed by the above operation, the following operation is further performed. That is, the switching valve 39a is again switched to the atmosphere open state, the vacuum chamber 37 becomes atmospheric pressure, the tape 31 that has been vacuum-sucked to the suction surface 41 is released, and is slightly lifted from the suction surface 41. At this time, air may be introduced into the vacuum chamber 37 to release the restraint of the tape 31. Thereafter, the vacuum chamber 37 is evacuated as described above. Complete positioning can be achieved by repeating the above operations one or more times.
[0043]
After the positioning of the tape 31 is completed, when the switching valve 39a is switched to a vacuum state, the vacuum chamber 37 is vacuumed and the tape 31 is vacuum-sucked by the suction surface 41 and restrained. In this state, when the printing plate 47 of the printing mechanism 46 is lowered and pressed against the tape 31, predetermined printing is performed on the surface of the tape 31.
[0044]
Thereafter, when the printing plate 47 of the printing mechanism 46 rises and the vacuum in the vacuum chamber 37 is released, the positioning pin 44 is pulled back by the actuator 43. Then, the tape 31 is pulled out in the direction of arrow C by the gripping device 33, the tape cutter 48 is lowered, and the tape 31 is cut into a predetermined length. When the gripping device 33 cancels the suction of the cut tape 31, it is stored in the storage container 36.
[0045]
The position of the drawing stroke of the tape 31 by the gripping device 33 may be limited by the stroke of the gripping device 33, and the position of the positioning hole 32 is detected by the hall sensor as in the first embodiment. The 33 strokes may be limited.
[0046]
In the present embodiment, the number of positioning pins 44 is one, but a plurality of positioning pins 44 may be provided in the width direction or the longitudinal direction of the tape 31, and the positioning holes 32 into which the positioning pins 44 are inserted serve as the longitudinal direction of the tape 31. This can be realized regardless of the pitch of the positioning holes 32 provided at equal pitches.
[0047]
The tape 31 is not limited to a long one, and even a tape cut to a predetermined length can be realized if at least one positioning hole is provided.
[0048]
【The invention's effect】
As described above, according to the present invention, by positioning using the opening of the transported object, the transporting and positioning means for the transported object can be made compact, and can be provided at low cost. In addition, it is possible to cope with a transported object having high-speed response and positioning accuracy and different hole pitches.
[Brief description of the drawings]
1A and 1B show a first embodiment of the present invention, in which FIG. 1A is a longitudinal side view in a state where a tape is being transported, FIG. 1B is a longitudinal side view in a state where a tape transport is stopped, and FIG. FIG. 4D is a longitudinal side view of a state where the positioning has been completed, and FIG.
FIG. 2 is a longitudinal side view showing a modified example of the embodiment in a state where positioning of the tape is completed.
FIG. 3 is a vertical side view of a printing apparatus according to a second embodiment of the present invention that prints on a tape while transporting the tape.
FIG. 4 is a plan view of a carrier tape.
FIG. 5 is a conveying device for feeding a conventional carrier tape.
[Explanation of symbols]
1 ... Carrier tape (conveyed object)
2 ... Sprocket hole (opening)
13 ... Upper roller 14 ... Lower roller 19 ... Positioning pin

Claims (6)

A sheet-like object to be conveyed having an opening, a conveying means for conveying and stopping the object to be conveyed, a restricting means for restricting and releasing the object to be conveyed, and a positioning means for positioning the object to be conveyed for example Bei the door,
The conveying means is configured such that at least one of the two rollers that sandwich the object to be conveyed is rotationally driven, and the restraining means sandwiches and constrains the object to be conveyed by the two rollers. At least one of the rollers is separated from the conveyed object to release the restraint,
Before Symbol positioning means, when said restraint of the carried object is released, characterized in that by inserting a positioning pin having a conical head on the opening of the object to be conveyed for positioning the conveyed object A conveyance positioning device for the object to be conveyed. A sheet-like object to be conveyed having an opening, a conveying means for conveying and stopping the object to be conveyed, a restricting means for restricting and releasing the object to be conveyed, and a positioning means for positioning the object to be conveyed And
The transport means includes a sprocket wheel that transports the transported object, one of the two rollers that sandwich the transported object, and sandwiches and restrains the transported object by the two rollers to freely rotate the sprocket wheel. It is intended to release the restraint,
The positioning means, when the restraint of the conveyed object is released, it characterized that you have to insert the positioning pin having a conical head on the opening of the object to be conveyed for positioning the conveyed object conveying and positioning device of the object to be conveyed shall be the. A sheet-like object to be conveyed having an opening, a conveying means for conveying and stopping the object to be conveyed, a restricting means for restricting and releasing the object to be conveyed, and a positioning means for positioning the object to be conveyed And
The conveying means is a gripping equipment that moves while gripping an end portion of the object to be conveyed,
The positioning means, when the restraint of the conveyed object is released, it characterized that you have to insert the positioning pin having a conical head on the opening of the object to be conveyed for positioning the conveyed object conveying and positioning device of the object to be conveyed shall be the. A sheet-like object to be conveyed having an opening, a conveying means for conveying and stopping the object to be conveyed, a restricting means for restricting and releasing the object to be conveyed, and a positioning means for positioning the object to be conveyed And
The restraining means is provided in the transfer path for conveying the conveying object, Ri vacuum suction means der to vacuum suction an object to be conveyed,
The positioning means inserts a positioning pin having a conical head into the opening of the transported object and positions the transported object when the restraint of the transported object is released. conveying and positioning device of the object to be conveyed you. Conveying and positioning device of the prior Symbol position claim 1-4 transported object of wherein the the opening of the-decided Me pin and the carried object is substantially the same diameter. Conveying the sheet-shaped object to be conveyed having an opening, in the conveyance method of positioning the conveyed object for positioning by stopping conveyance at a predetermined position, the transported object by the two rollers before Symbol in stopping the conveyed object sandwiched temporarily constrained, then, after the two rollers has canceled the restriction of the transported object, position-decided rice by inserting the positioning pin into the opening of the object to be conveyed, again transported object A method for conveying and positioning an object to be conveyed, wherein the restraint is repeated at least once.

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