JPH0829612B2 - Band film alignment method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a belt-shaped transfer film used in a transfer printing apparatus such as a thermal transfer apparatus or a simultaneous molding transfer apparatus, or another method for aligning a belt-shaped film.

(Prior art) For example, a thermal transfer device called a hot stamp is:
With the pattern on the transfer film corresponding to the transfer target, press the transfer film while pressing the transfer film with the transfer pad in this state to transfer the pattern to the transfer target. However, in this thermal transfer device, when the transfer operation to one transfer target is completed, the transfer film is moved by one pitch so that the untransferred pattern on the film corresponds to the next transfer target. Is done.

In addition, a transfer film is sandwiched between a fixed mold and a movable mold so that the pattern on the film is transferred to the molded product at the same time as the injection molding of the resin molded product. The transfer film is moved by one pitch before the mold clamping.

However, when the transfer film is intermittently transferred by one pitch in this kind of apparatus, unless the film is properly stopped in a predetermined positional relationship with respect to the transfer target or the molding die, a pattern on the transfer target or the molded product is obtained. Therefore, an error will occur in the transfer position of. Therefore, as disclosed in, for example, Japanese Patent Application Laid-Open No. 60-6465, in this type of apparatus, a first sensor and a second sensor for detecting the position of the transfer film in the feed direction and the position of the transfer film in the width direction are provided. The first sensor stops the feeding means when the first sensor detects the alignment mark in the feeding direction provided on the film for each one transfer pitch, and the second sensor
The widthwise alignment mark provided on the film is detected by this sensor, and when the film is displaced in the widthwise direction, the widthwise position adjusting means corrects the displacement. In this case, in order to improve the accuracy of this alignment, as proposed by the applicant of the present application in the previous patent application (see Japanese Patent Laid-Open No. 61-287712), the detection is performed as the first and second sensors. A sensor capable of detecting the deviation amount and the deviation direction of the mark position with respect to a predetermined reference position on the surface is used, and the alignment mark in the feed direction and the width direction is centered on the reference position in these sensors. It is conceivable that the position of the film in the feed direction and the position in the width direction are feedback-controlled so that they converge within a certain allowable range.

(Problems to be solved by the invention) By the way, in the prior art, when performing the alignment in the film feeding direction and the width direction as described above, these alignment controls were individually performed. There was a problem.

In other words, for example, when the position in the width direction is displaced during the transfer of the film, even if the control for eliminating the displacement is performed, the position in the width direction is again displaced until the film is stopped, or after the feeding is stopped. If the width direction position is adjusted, the stop position in the feed direction may be misaligned, etc. Even if the alignment is correctly performed in one direction, it will be misaligned again due to the alignment operation in the other direction. However, the accuracy of the alignment is reduced. Further, in the case of performing the feedback control for the alignment in both directions as described above, for example, the operation for correcting the deviation in the width direction is continued when the position in the feed direction falls within the predetermined allowable range. At times, this operation may cause the position in the feed direction to deviate from the permissible range, and the control operation in the feed direction may be performed again. In this case, the positions in both directions are converged within the permissible range. It will take a long time to get there.

The present invention addresses the above situation regarding the alignment of a belt-shaped film which is intermittently transferred by one pitch such as a transfer film used in a thermal transfer device or a simultaneous molding transfer device. An object of the present invention is to realize a method capable of accurately aligning a position in the width direction and a position in the width direction to a predetermined position in a short time.

(Means for Solving the Problems) That is, the present invention relates to a positioning method for stopping a belt-shaped film intermittently transferred by one pitch in the longitudinal direction at predetermined positions in the feeding direction and the width direction. In the method, a first pulse motor for transporting the film,
A second pulse motor for adjusting the position of the film in the width direction, and a first pulse motor provided on the film for alignment in the feeding direction.
It is detected whether the mark is located on the detection surface and the first
A displacement amount and a displacement direction in the feed direction of the position of the first mark with respect to a predetermined reference position provided on the detection surface in a state where the mark is located on the detection surface.
The sensor and the second mark for alignment in the width direction provided on the film are located on the detection surface, and the widthwise deviation of the position of the second mark with respect to a predetermined reference position provided on the detection surface. A second sensor that can detect the displacement and the displacement direction is used. Then, when the first sensor detects the first mark, the film feed speed by the first pulse motor is switched from high speed to low speed, and at this time, the deviation amount of the second mark with respect to the reference position of the second sensor. Is greater than a predetermined value, the film is also moved in the width direction by the second pulse motor in the direction in which the deviation amount is reduced, and the reference positions of the first and second marks in the first and second sensors are set. When the amount of deviation from each is less than or equal to a predetermined value, the first and second pulse motors are respectively pulsed in the forward or reverse direction in accordance with the direction of deviation of the first and second marks from the reference position. Each of the first and second marks passes over the reference position on the detection surface of the first and second sensors by the operation for one pulse, and the rotations of the first and second pulse motors are both performed. The state is reversed every pulse. After the, configured to stop the first, the second pulse motor simultaneously.

(Operation) According to the above configuration, when the first sensor detects the first mark for alignment in the feeding direction, which is provided on the film during the transport of the film by the first pulse motor,
If the film feed speed in the first pulse motor is switched from high speed to low speed, and if there is a predetermined amount of deviation in the width direction of the film at this time, the second pulse motor operates so as to reduce the deviation. To do. Then, when the deviation amount of the first and second marks for alignment in the feed direction and the width direction with respect to the reference position of the first and second sensors becomes equal to or less than a predetermined value, that is, in the film feed direction and the width direction. When the deviation from the predetermined stop position falls within a certain range, fine adjustment of the positions in both directions by the first and second pulse motors is performed.
This fine adjustment operation is performed by operating the first and second pulse motors one pulse at a time in the forward rotation direction or the reverse rotation direction according to the deviation direction with respect to the stop position in the film feeding direction and the width direction. Specifically, when the first mark for alignment in the feed direction is on the front side of the reference position in the first sensor in the feed direction, the film is moved forward in the feed direction by one pulse of the first pulse motor, When the first mark has passed the reference position, the film is moved backward by one pulse in the feeding direction, whereby the film is moved by the first pulse motor about a predetermined stop position in the feeding direction. It vibrates back and forth with a minute amplitude corresponding to one pulse. Similarly, the film also vibrates in the width direction with a minute amplitude corresponding to one pulse of the second pulse motor about the predetermined stop position. Then, the vibrations in both directions are stopped at the same time, so that at the time of the stop, the film is simultaneously aligned with a predetermined stop position in the feed direction and the width direction with a very small error within the range of the amplitude. It will be.

(Example) Hereinafter, an example in which the method of the present invention is applied to a simultaneous molding transfer device will be described.

First, the schematic structure of the simultaneous molding transfer device will be described with reference to FIGS. 1 and 2. The device 1 includes a pair of a fixed mold 2 and a movable mold whose surfaces facing each other are molding surfaces 2a, 3a having a predetermined shape. 3, a fixed mold 2 is provided with a molten resin injection nozzle 4 at the back, and the movable mold 3 is moved in the front-rear direction (left-right direction in FIG. 2) by a driving means (not shown) such as a cylinder. It is attached to a movable table 5 which is reciprocated, and can be brought into contact with and separated from the fixed mold 2. When the fixed mold 2 and the movable mold 3 are in contact with each other, a cavity having a predetermined shape is formed between the molding surfaces 2a, 3a of the two molds 2, 3 and the molten resin injected from the injection nozzle 4 is injected into the cavity. It is adapted to be supplied and filled through an injection passage 2b provided in the fixed mold 2.

Further, the movable table 5 is provided with a feeding device for a belt-shaped transfer film 6 in which a large number of transfer patterns A ... A are drawn in a line. This feeding device is composed of a film supply unit 7 provided above the movable table 5 and a film winding unit 8 provided below the movable table 5. Then, the left and right side frames 9 of the supply unit 7,
The roll support shaft 10 for supporting the roll 6'of the transfer film 6, the feed roller 11 for pulling the transfer film 6 out of the roll 6'and sending it forward, and the transfer film 6 between the roller 11 A pressing roller 12 for sandwiching the shaft is supported, and a first pulse motor 15 for driving the feed roller 11 is attached to one of the side frames 9 via a pair of gears 13 and 14. Further, in front of the side frames 9 and 9, guide rollers 18 are provided via rack shafts 16 and 16 slidable forward and backward and a connecting member 17 provided between front end portions of both rack shafts 16 and 16. The guide roller 18 is moved back and forth by rotating the pinion shaft 19 having the pinions 19a and 19a that mesh with the rack shafts 16 and 16, respectively, and the transfer film 6 between the fixed mold 2 and the movable mold 3 is moved. The passing position of is adjusted forward and backward.

On the other hand, in the film winding unit 8, the engaging blocks 21 ... 21 fixedly provided on the upper surface of the substrate 20 are engaged with the rails 22, 22 fixed laterally on the lower surface of the movable table 5 so that the film is wound sideways. The second pulse motor 24 for adjusting the width direction and the screw shaft 26 rotated by the motor 24 via the belt 25 are provided on the bracket 23 fixed to the movable table 5 while being slidable in the direction. Is supported, and the screw shaft 26 is screwed into a female screw member 27 fixed to the lower surface of the substrate 20. As a result, the entire winding unit 8 is slid in the width direction of the film 6 via the screw shaft 26 according to the rotation of the motor 24. A roll support shaft 29 for supporting the winding roll 6 ″ of the transferred film 6 is provided between the left and right side frames 28, 28 of the unit 8.
A slack eliminating roller 30 for the transfer film 6 and a pressing roller 31 for sandwiching the transfer film 6 between the roller 30 and the pinion shaft, like the guide roller 18 in the film supply unit 7. A guide roller 34 is provided which is moved back and forth via the pinions 32a, 32a and the rack shafts 33, 33 by the rotation of 32. A slack eliminating motor 36 for rotating the slack eliminating roller 30 is attached to one side frame 28 via a belt 35. The motor 36 winds the transfer film 6 through the slack eliminating roller 30. Is always pulled in the direction, and thereby the transfer film 6 is interposed between the guide roller 18 in the film supply unit 7 and the guide roller 34 in the winding unit 8.
Is always kept in a predetermined tension.
As shown in FIG. 2, clamp members 37 ... 37 for fixing the transfer film 6 when the two molds 2 and 3 are in contact with each other are provided on the surface of the fixed mold 2 facing the movable mold 3.

However, as shown in FIG. 1, on one side of the transfer film 6, a light-shielding type first alignment mark a formed by printing a black coating on a transparent base film corresponding to each pattern A ...
... a is provided intermittently, and the other side portion of the film 6 is provided with a second light-shielding type second alignment mark b which is also formed by printing a black coating portion on the base film and is continuous in the longitudinal direction. There is. A first mark detector 41 is attached to the connecting member 17 of the film supply unit 7 corresponding to the passage position of the first alignment marks a ... A second mark detector 42 is attached so as to correspond to the passing position of the mark b. Each of these detectors 41 and 42 is composed of a light projecting portion and a light receiving portion which are arranged so as to face each other with the side portion of the transfer film 6 interposed therebetween, and the detection light emitted from the light projecting portion is detected by the film 6 above. It is designed to pass through and enter the light receiving part,
Light receiving portions of both detectors 41 and 42 are provided with first and second sensors 43 and 44, respectively, as shown in FIGS. These sensors 43 and 44, feed direction X-X 'and the width direction Y-Y' in the elongated receiving surface 43a of each film 6, which has a 44a, respectively first, second output terminal 43 _1, 43 ₂ and It has 44 ₁ and 44 ₂ . Then, the total amount of light incident on the light receiving surface 43a (44a) is
1, corresponding to the sum of the first and second output values E ₁ , E ₂ (E ₁ ′, E ₂ ′) from the second output terminals 43 ₁ , 43 ₂ (44 ₁ , 44 ₂ ) and the light receiving surface 43
The deviation of the incident light distribution with respect to the center position x (y) of a (44a) is output as the difference between the two output values E ₁ and E ₂ (E ₁ ′, E ₂ ′). That is, for example, as shown in FIG. 3, when the first alignment mark a is located on the rear X ′ side in the film feeding direction from the center position x on the light receiving surface 43a of the first sensor 43, the first output value E ₁ is 2 is larger than the output value E ₂ , and conversely when the mark a is located on the front side X side of the center position x, the second output value E ₂ is larger than the first output value E ₁ and the difference ΔE (= E ₁ the absolute value of -E ₂₎ is made to correspond to the deviation amount of the position of the mark a to the center position x. Similarly, for example, when the second alignment mark b is located on the left side (Y 'direction) of the center position y on the light receiving surface 44a of the second sensor 44 as shown in FIG.
When E ₁ ′ becomes larger than the second output value E ₂ ′ and the mark b is located on the right side (Y direction) of the center position, the second output value
E ₂ ′ becomes larger than the first output value E ₁ ′, and the difference Δ
The absolute value of _{E '(= E 1' -E} 2 ') is made to correspond to the deviation amount of the position of the mark b relative to the center position y.

As the first and second alignment marks a and b, translucent marks can be used in place of the light-shielding marks shown in the drawing. In this case, the sensor center positions of these marks can be used.
The displacement direction with respect to x and y and the magnitude relationship between the first and second output values of both sensors 43 and 44 are opposite to the above case.

Next, an embodiment of the method of the present invention using the simultaneous molding and transfer apparatus 1 as described above will be described with reference to the flowchart of FIG. In addition, the following method, specifically, as shown in FIG. 6, receives the output signals of the first and second sensors 43 and 44,
It is implemented by a control device that controls the operation of the first and second pulse motors 15 and 24.

First, the simultaneous molding transfer device 1 shown in FIGS. 1 and 2 completes the molding of one molded product and the transfer of the pattern A from the transfer film 6 to the molded product, and the fixed mold 2 and the movable mold 3 are formed. When is is in the molded article is taken out opening, forming the next molded article, in order to start the transfer operation, the transfer of the transfer film 6 is performed in accordance with step S ₁ to S ₃ of the flowchart of Figure 5. That is, first, a transfer command for the transfer film 6 is generated, and based on this, a flag used by the control device in the following control.
After resetting F ₁ , F ₁ ′, F ₂ , F ₂ ′ and the variable N to 0,
The first pulse motor 15 is rotated at high speed in the normal direction to transfer the transfer film 6 from the supply unit 7 shown in FIGS. 1 and 2 to the winding unit 8 side in the vertical direction at high speed.

Next, when the first alignment mark a provided on one side of the transfer film 6 reaches the light receiving surface 43a of the first sensor 43 due to the high speed transfer, the total input of the detection light to the light receiving surface 43a is performed. As the amount decreases and the sum of the first and second output values E ₁ , E ₂ of the first sensor 43 decreases, the control device detects the arrival of the first alignment mark a in step S _4. To do. When the first alignment mark a is detected in this way, the rotation speed of the first pulse motor 15 is switched from high speed to low speed, the high speed feeding operation of the transfer film 6 is completed, and the longitudinal direction of the film 6 ( The position shift operation is performed in the feed direction) and the lateral direction (width direction).

This alignment operation is performed in parallel in the vertical direction and the horizontal direction at the same time, and both are aligned with the first and second sensors 43, 44.
According to the positional relationship between the first and second alignment marks a and b, the difference ΔE and ΔE ′ between the first and second output values of both sensors 43 and 44 is determined as follows. Here, since the lateral alignment operation is performed after the first sensor 43 detects the first alignment mark a, it is not necessary to provide the second alignment mark b continuously in the longitudinal direction of the film 6. , A may be provided intermittently corresponding to A.

First, regarding the longitudinal alignment operation, as shown in FIG. 7, when the first sensor 43 detects the first alignment mark a and the transport of the film 6 is switched from the high speed feed to the low speed feed. First, as the first output value E _{2 of} the first sensor 43 becomes smaller, the difference ΔE between the first and second output values once increases, and then the mark a is at the center position x of the light receiving surface 43a shown in FIG. The difference ΔE decreases as the distance approaches, but as shown in steps S ₅ and S ₆ of the flowchart, this difference ΔE
The first pulse motor 15 is rotated at a low speed to feed the film 6 at a low speed until the absolute value of is reduced to a relatively small predetermined amount ΔE ₀ or less. Then, when ΔE ≦ ΔE ₀ , that is, when the deviation amount of the position of the first alignment mark a from the sensor center position x falls within a predetermined range (the time indicated by reference numeral (a) in FIG. 7). ) Ends the low-speed feed, and the first flag F ₁ for the vertical direction is set to 1 in step S ₇ .

Further, in the lateral direction, the displacement of the film 6 is relatively large, and the second alignment mark b is offset to the right or left with respect to the center position y on the light receiving surface 44a of the second sensor 44 shown in FIG. The sensor unit 44 has a large
A predetermined value ΔE ₁ ′ with a relatively large absolute value of the output value difference ΔE ′
Greater than during the second stepping motor 24 in step S _8, S ₉
Is rotated at a high speed to move the film 6 quickly in the direction in which the deviation amount decreases. Further, due to the lateral movement of the film 6 at a high speed, the deviation amount of the mark b from the sensor center position y becomes small, or the deviation of the film 6 from the beginning is relatively small, and the difference ΔE ′ is When the absolute value is equal to or less than the relatively large predetermined value ΔE ₁ ′, it is determined whether or not the absolute value of the difference ΔE ′ is less than or equal to the predetermined value ΔE ₀ ′ smaller than the predetermined value ΔE ₁ ′. Predetermined value ΔE ₀ ′
Greater than at the time of the second pulse motor 24 rotates at a low speed according to step S _10, S _11, the film 6 amount deviated moves at low speed in the direction to decrease. Then, due to the movement of the film 6 at this low speed, the deviation amount becomes further smaller, and | ΔE ′ |
When ≦ ΔE ₀ ′, that is, when the deviation amount of the mark b from the sensor center position y falls within a predetermined range (the time indicated by the reference numeral (b) or (b ′) in FIG. 7), or Has little or no deviation from the beginning, and | ΔE ′ | ≦ Δ
If it is E ₀ ′, the first lateral flag F ₁ ′ is set to 1 in step S ₁₂ . Here, the above steps S ₉ and S
_When the film is moved laterally at high speed or low speed by ₁₁ , the magnitudes of the first and second output values E ₁ ′ and E ₂ ′ of the second sensor 44 are compared, and E ₁ ′> E ₂ ′ is satisfied. When the second alignment mark b is located on the left side of the center position y on the light receiving surface 44a of the second sensor 44, the second pulse motor 24 is moved to the film 6 position.
Is rotated in the direction of moving to the right, and when E ₁ ′ <E ₂ ′, that is, when the mark b is located on the right of the center position y, the second pulse motor moves in the direction of moving the film 6 to the left. By rotating 24, the deviation amount of the mark b with respect to the sensor center position y is reduced.

In this way, the absolute values of the difference ΔE between the first and second output values of the first sensor 43 and the difference ΔE ′ between the first and second output values of the second sensor 44 are relatively small predetermined values ΔE _0. , ΔE ₀ ′ or less, and if the deviation amounts of the alignment marks a and b in the vertical and horizontal directions with respect to the sensor center positions x and y are both within the predetermined range, both flags F ₁ and F ₁ ′ are set. When the value becomes 1, the fine adjustment of the position in the vertical direction and the horizontal direction will be performed next from step S ₁₃ to step S ₁₄ . In that case, when the deviation amount in either one of the two directions falls within the predetermined range first, until the deviation amount in the other direction falls within the predetermined range, The movement of the film 6 is stopped, but if the deviation amount in the one direction deviates from the predetermined range due to the influence of the movement of the film 6 in the other direction during this period, steps S ₅ , S ₆ or step S ₈ to S ₁₁ is performed again, the deviation amount will be returned to within the predetermined range.

Then, in both directions, when the deviation amount with respect to the sensor center position x, y of the alignment marks a, b falls within the predetermined range, fine adjustment of the vertical and horizontal positions is performed in parallel as follows respectively. Is done in a regular manner.

That is, in the vertical direction, first in step S ₁₄ ,
Determine whether the difference ΔE between the first and second output values of the sensor 43 is positive or negative,
When ΔE> 0 (E ₁ > E ₂ ), that is, as shown in FIG.
When alignment marks a is located behind X 'of the sensor center position x, only one pulse is rotated in the forward direction the first pulse motor 15 in step S ₁₅ (the direction to send the film 6 forward), also , ΔE <0 (E ₁ <E ₂ ), that is, the mark a
Is located in front of the sensor center position x,
The first pulse motor 15 in S ₁₆ in the reverse direction (direction to return the film 6 to the rear) is rotated by one pulse. And
In any case, according to step S ₁₇ to S _19, the film 6 by the rotation of the one pulse of the first pulse motor 15
When the first alignment mark a moves beyond the sensor center position x due to the forward or backward movement of the arrow mark and the positive and negative of the difference ΔE between the first and second output values is reversed, the second flag F ₂ for the vertical direction. Is set to 1, and when the mark a does not exceed the sensor center position x in the movement of the film 6 by the rotation of the first pulse motor 15 for one pulse, the flag F ₂ is held at 0.

Also in the lateral direction, whether the difference ΔE ′ between the first and second output values of the second sensor 44 is positive or negative is determined in accordance with steps S _{20 to} S ₂₅ , and ΔE ′> 0 (E ₁ ′> E ₂ ′), That is, the second alignment mark b is at the sensor center position y as shown in FIG.
Right 'in the forward direction (the direction of moving the film 6 to the right) when located in, Delta] E' left Y <0 when (E ₁ '<E _2'), that mark b of the sensor center position y When located at Y, the second pulse motor 24 is rotated by one pulse in the reverse direction (direction in which the film 6 is moved to the left).
When the second alignment mark b exceeds the sensor center position y due to the movement of the film 6 to the right or left by the rotation of one pulse, the second lateral flag F ₂ ′ is set to 1. When it does not exceed, the flag F ₂ ′ is held at 0.

Then, after rotating the first and second pulse motors 15 and 24 by one pulse each, in step S ₂₆ , the second flags F ₂ and F
'Determining the value of both the flag F _2, F _{2' 2} when 1 both, i.e. the feed direction and the width direction of both directions alignment marks a, when b is moved past the sensor center position x, a y, the Step S
_{At 27} and S ₂₈ , 1 is added to the variable N, and the variable N has a predetermined value N.
_It is judged whether or not ₀ (for example, 20) is reached, and then N <N
₀ during repeatedly executes the fine adjustment operation in both directions by the step S ₁₄ to S _25. Incidentally, when at least one of the flags F ₂ and F ₂ ′ is 0, that is, in one or both of the vertical direction and the horizontal direction, the alignment marks a and b are rotated by one pulse of the pulse motors 15 and 24. There when did not exceed the sensor center line x, a y, without performing addition of the variable N by the step S _27, again executes step S ₁₄ to S _25.

After that, when N = N _0, that is, the alignment marks a and b exceed the sensor center positions x and y by one pulse rotation of the pulse motors 15 and 24 in both the vertical and horizontal directions. When the number of movements reaches a predetermined number (N ₀ ), step S
_{At 29} , both pulse motors 15 and 24 are stopped, and the fine adjustment of the vertical and horizontal positions is completed. In that case, in this fine adjustment operation, the deviation amount from the sensor center positions x and y of the alignment marks a and b is relatively large at the beginning, and the film is generated by the rotation of one pulse of the pulse motors 15 and 24. 6
Even if it does not exceed the sensor center positions x and y with a minute movement amount of, the marks a and b are at the sensor center positions x and y with the above movement amount of the film 6 while the steps S _{14 to} S ₂₅ are repeatedly performed a plurality of times.
Must be exceeded, and after that, the pulse motor
The rotation direction is reversed every 1 pulse of 15 and 24, and the film 6 vibrates with a minute amplitude.
Then, in particular, this vibration is simultaneously performed in the vertical and horizontal directions, and is stopped at the same time when the variable N reaches the predetermined value N ₀ , so that the film 6 is driven by the pulse motors 15 in the vertical and horizontal directions. It will be surely stopped within the minute error range corresponding to the rotation amount of 24 pulses.

(Advantages of the Invention) As described above, according to the method for aligning a strip-shaped film according to the present invention, after the film that is intermittently transferred is stopped, the film is vibrated at the same time with a small amplitude in the feed direction and the width direction. Since these vibrations will be stopped at the same time, the position in the other direction will shift due to the position adjustment operation in one direction, as in the case where the above-mentioned two-direction position adjustments were performed independently of each other. Disappears. Thereby, for example, the alignment of the transfer film used in the simultaneous molding transfer device or the thermal transfer device in the feeding direction and the width direction can be performed with high accuracy and in a short time, and the transfer printing work by the device of this type is excellent, and It will be done efficiently.

[Brief description of drawings]

1 and 2 are a front view and a central longitudinal side view of a simultaneous molding transfer device to which an embodiment of the present invention is applied, and FIGS. 3 and 4 are alignment marks in the feed direction and the width direction and first and first alignment marks. 2 is a schematic view showing the shape and positional relationship of the two sensors, FIG. 5 is a flow chart showing an embodiment of the method of the present invention, FIG. 6 is a schematic view of a control system for carrying out the embodiment, and FIG. FIG. 7 is a successive change diagram of sensor output values showing a positioning operation according to an example. 6 …… Band-shaped film (transfer film), 15,24 …… First,
2nd pulse motor, 43,44 ... 1st, 2nd sensor, 43a, 44a
...... Detection surface (light receiving surface), x, y …… Reference position (center position), a, b …… Alignment marks in the feed direction and width direction (first and second alignment marks).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 61-287712 (JP, A) JP 60-6465 (JP, A) JP 63-318773 (JP, A) JP 53- 55225 (JP, A) Actually opened 62-11650 (JP, U)

Claims (1)

[Claims] 1. A positioning method for stopping a belt-shaped film which is intermittently transferred by one pitch in the longitudinal direction at predetermined positions in the feed direction and the width direction, and a first pulse motor for transferring the film, and a first pulse motor for transferring the film. Second to adjust the width direction position
The pulse motor and the first mark for alignment in the feeding direction, which is provided on the film, are detected on the detection surface in a state where the first mark is positioned on the detection surface and the first mark is positioned on the detection surface. A first sensor capable of detecting a deviation amount and a deviation direction of the position of the first mark with respect to a predetermined reference position in the feed direction, and a second sensor provided on the film for alignment in the width direction. A second sensor capable of detecting the width-direction deviation amount and the deviation direction of the position of the second mark with respect to a predetermined reference position provided on the detection surface in a state where the mark is located on the detection surface. And the first sensor is the first
When the mark is detected, the film feed speed by the first pulse motor is switched from high speed to low speed, and at the same time, the second
When the deviation amount of the second mark with respect to the reference position of the sensor is equal to or larger than a predetermined value, the film is moved in the width direction by the second pulse motor in the direction in which the deviation amount is reduced, and the first and the first films are moved. When the deviation amount of the 2 mark from the reference position in the first and second sensors is below a predetermined value,
The first and second pulse motors are operated one pulse at a time in the forward rotation direction or the reverse rotation direction in accordance with the deviation direction of the first and second marks from the reference position, and the operation of the one pulse causes the first and second pulse motors to operate. After both of the second marks have passed the reference positions on the detection surfaces of the first and second sensors, respectively, and the rotations of the first and second pulse motors are both reversed every pulse, A method for aligning a strip-shaped film, which comprises simultaneously stopping two pulse motors.