JPS61287712A - Transfer film positioning device for simultaneous molding and transferring device - Google Patents

Abstract

PURPOSE:To transfer a pattern on the film accurately by a method wherein the feeding speed of the transfer film is regulated on the basis of the detection of a sensor detecting the passing of a slit on the film. CONSTITUTION:In case transversal deviation is generated in the transfer film, the position of incidence of detecting light coming into second sensor 49 from second lamp 47 through second slit is deviated from the center of light receiving zone in said sensor 49 and the difference DELTAE of output values E1, E2 of said sensor 49 becomes larger than a predetermined value DELTAE0 in accordance therewith. In this case, a low-frequency pulse signal and a feeding direction commanding signal according to the difference DELTAE, are outputted from a control circuit and the feeding speed of the film is regulated by minute-speed feeding. Thereafter, the minute-speed feeding is stopped when the slit is positioned within very small permissible error range with respect to the center of the light receiving zone and whereby the longitudinal positioning of the transfer film 6 may be completed.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to the injection molding of a resin molded product and the positioning of the transfer film in a simultaneous molding transfer device that transfers the design on the transfer film to the molded product at the same time. Regarding equipment.

(Prior art) In a simultaneous molding transfer device in which a transfer film is sandwiched between a fixed mold and a movable mold, and the design on the film is transferred to the molded product at the same time as injection molding, the above-mentioned fixed mold Alternatively, either one of the movable molds is provided with a film feeding device that transports the transfer film by passing it between the two molds, and the device transports the transfer film one pitch at a time before clamping the mold in each molding operation. However, in this case, unless the transfer film is stopped in a predetermined positional relationship with respect to the mold, an error will occur in the position of the pattern transferred to the molded product. Therefore, this type of simultaneous molding transfer device is equipped with a transfer film positioning device that stops the feeding device when an optical sensor detects the identification marks provided on the transfer film at every pitch. but,
In conventional positioning devices, the transferred film cannot be accurately positioned at a predetermined position due to a time delay between when the sensor detects the mark and when the feeding device completely stops. Further, in order to cope with this problem, the feeding speed of the transfer film may be reduced, but this will significantly deteriorate efficiency.

To solve the above-mentioned problem regarding the positioning of a transfer film in a simultaneous molding transfer device, for example,
There is an invention disclosed in Publication No. 204522. In this invention, two sensors are arranged at appropriate intervals along the feeding direction of the transfer film, and when the upstream sensor first detects a mark, the feeding speed is switched from high speed to low speed, and then the downstream sensor The film feed is stopped when the sensor detects the mark, and it can be expected that positioning errors caused by delays in stopping the film will be reduced. However, even with this method, there are limits to positioning accuracy due to the characteristics of the sensor itself.
Positioning cannot be performed with greater precision. In other words, as shown in FIG. 7, when the slit-type mark B of the transfer film is positioned on the light-receiving surface A of the sensor, a signal is output from the sensor A. The position shown by the solid line (a) and the position shown by the chain line (
The position of mark B cannot be distinguished between (b) and an error within this range will always occur.

On the other hand, as a method for detecting identification marks with higher accuracy, there is a method using a television camera. In other words, it detects the position of the mark photographed by the television camera on the image receiving surface, and feedback controls the feeding device so that the mark is positioned at a predetermined position on the image receiving surface (generally at the center). This significantly improves positioning accuracy. However, this method requires expensive equipment such as a TV camera and receiver, and the TV camera used as a detection means is large, so the space between the fixed mold and the movable mold in the simultaneous molding and transfer device is narrow. It is difficult to install the television camera in a remote location, and the surrounding area of the device becomes extremely hot, resulting in problems such as reduced durability of the television camera.

(Object of the Invention) The first invention of the present application deals with the above-mentioned situation regarding the positioning of a transfer film in a simultaneous molding and transfer device, and in particular, it is an object of the present invention to deal with the above-mentioned situation regarding the positioning of a transfer film in a simultaneous molding and transfer device. The detection means for detecting the identification mark is extremely compact and can be installed even in a narrow space between a pair of fixed and movable molds, and the positioning means can position the transfer film with high precision. The purpose is to realize the device.

Moreover, in addition to the first invention, the second invention of the present application aims to enable highly accurate positioning of the transfer film in the width direction using a compact detection means.

(Structure of the Invention) A transfer film positioning device for a simultaneous molding and transfer device according to the present invention is characterized in that it is configured as follows in order to achieve the above object.

First, the first invention includes a film feeding means provided on either the fixed mold or the movable mold to transport the transfer film by passing between the two molds, and slits provided in the transfer film at every pitch. a light projecting means for irradiating the detection light to a passing position of the slit; a position detection means for receiving the detection light passing through the slit; and a control means for controlling the operation of the film feeding means in response to a signal from the detection means. In the configuration, a sensor is used as the position detecting means, which outputs a signal indicating the amount of incident light and the position of the incident light in a certain light receiving zone. The control means receives the output signal of the sensor, and when the amount of incident light is less than a predetermined amount, the film feeding means is operated at high speed, and when the amount of incident light exceeds a predetermined amount, it is switched to a low speed feeding operation, and The film feeding means is configured to stop when the light incident position is located at the center of the light receiving zone.

More specifically, the above sensor has two output terminals, and the sum of the output values from both terminals corresponds to the amount of light incident on the light receiving zone, and the absolute value of the difference between 100 outputs and +, - The codes used correspond to the amount and direction of deviation of the light incident position with respect to the center of the light receiving zone, respectively. Then, the control means receives the output signal of this sensor and causes the feeding means to be sent at high speed when the sum of the above two output values exceeds a predetermined value, in other words, when the slit of the transfer film reaches the light receiving zone of the sensor. Switch to low speed feed. Further, in this low-speed feeding state, when the difference between the two output values becomes less than a predetermined value, that is, when the slit is located near the center of the light receiving zone of the sensor, the feeding means is stopped. In this case, in the following embodiment, in order to further improve the positioning accuracy, when the difference between the two output values becomes less than a predetermined value, the operation of the feeding means is switched from low-speed feeding to slow-speed feeding, and In this state, the feeding means is moved forward or backward in a direction that reduces the error depending on the + or - sign of the above difference, and the feeding means is stopped when the absolute value of the error falls within an extremely small tolerance range. It is configured as follows. In this way, the positioning accuracy of the transfer film is further improved.

In addition to the configuration of the first invention, the second invention of the present application also provides a position adjusting means in the width direction perpendicular to the feeding direction of the transfer film, and a second slit provided in the transfer film continuous in the longitudinal direction. The present invention is characterized in that it is provided with a second light projection means for irradiating detection light onto a passing position of the second slit, and a second position detection means for receiving the detection light that has passed through the second slit. This second position detecting means is constituted by a sensor similar to the position detecting means in the feeding direction, and outputs a signal corresponding to the amount of incident light and the incident position of the detected light in the light receiving zone. The control means receives an output signal from the second position detection means, and when the amount of incident light is less than a predetermined amount and the amount of deviation of the light incident position with respect to the center of the light receiving zone deviates from a predetermined tolerance range. , the width direction position adjusting means is operated according to the direction of deviation so that the light incident position falls within the above range.

Incidentally, the light projecting means and the second light projecting means in the above-mentioned first and second inventions irradiate the detection light to a predetermined position of the transfer film via an optical fiber, and the position detecting means and the second position detecting means use an optical fiber. Alternatively, the detection light may be received through the sensor.

<Effects of the Invention> As described above, according to the present invention, a molded product of a predetermined shape is injection molded using a pair of fixed molds and a movable mold, and at the same time, a design on a transfer film is transferred to the molded product. In such a simultaneous molding and transfer device, the transfer film is positioned with respect to the mold with extremely high precision. As a result, a molded product in which the design is always transferred in the correct positional relationship can be obtained, and it is possible to prevent the occurrence of defective products in which the design is misaligned.

Particularly, according to the present invention, the position detecting means used for positioning the transfer film is inexpensive compared to a television camera, etc., and is extremely compact, and the position detecting means used for positioning the transfer film is very compact and can be mounted in a narrow space between the pair of molds. It can be easily installed in any space, and can even be built into a mold. Therefore, the difficulty of having to secure a large installation space as in the case of using a television camera is eliminated, and there is no drawback that durability is reduced even if the surrounding temperature is high. In this way, a positioning device that is excellent in terms of positioning accuracy, cost, installation space, etc. can be realized as a positioning device for a transfer film in a simultaneous molding and transfer device.

(Example) Examples of the present invention will be described below. Incidentally, this embodiment is common to the first invention and the second invention of the present application.

First, the general structure of the simultaneous molding and transfer device will be explained with reference to FIG.
and a movable mold 3, and an injection nozzle 4 for molten resin is provided on the back of the fixed mold 2, and the movable mold 3 is moved forward and backward by a driving means (not shown) such as a cylinder to the left and right in FIG. It is attached to a movable base 5 that is reciprocated in the direction
It can be brought into contact with and separated from the fixed mold 2. When the fixed mold 2 and the movable mold 3 come into contact with each other, both molds 2.3
A cavity of a predetermined shape is formed between the molding surfaces 2a and 3a, and the molten resin injected from the injection nozzle 4 is supplied and filled into this cavity through the injection passage 2b provided in the fixed mold 2. It has become.

On the other hand, the movable table 5 has a large number of transfer patterns 6a...
A feeding device for a belt-shaped transfer film 6 formed by drawing 6a in a line is provided. This feeding device includes a film supply unit 7 provided on the upper part of the movable base 5 and a film winding unit 8 provided on the lower part of the movable base 5. Between the left and right side frames 9, 9 of the supply unit 7, there is a roll support shaft 10 that supports the roll 6' of the transfer film 6, and a feed roller 11 that pulls out the transfer film 6 from the roll 6' and sends it forward. and the roller 1
A presser roller 12 that sandwiches the transfer film 6 between the two side frames 9 and 1 is pivotally supported, and a first pulse motor that drives the feed roller 11 via a pair of gears 13 and 14 is mounted on one side frame 9. 15 is installed. Further, rack shafts 16° 16 are supported by the side frames 9, 9 so as to be slidable back and forth, and both rack shafts 16.
A guide roller 18 that guides the transfer film 6 between the fixed mold 2 and the movable mold 3 located below is pivotally supported on a connecting member 17 installed between the front ends of the 6.degree. 16. A pinion shaft 19 having pinions 19a and 19a that mesh with the rack shafts 16 and 16, respectively, is provided, and by rotating the pinion shaft 19, the guide roller 18 is moved back and forth, and is movable with the fixed mold 2. The passing position of the transfer film 6 between the mold 3 and the mold 3 is adjusted back and forth.

On the other hand, in the film winding unit 8, the engagement blocks 21, 21, fixed to the upper surface of the substrate 20 are engaged with the rails 22, 22 fixed to the lower surface of the movable base 5 in the lateral direction. The bracket 23 is fixed to the movable base 5 so that it can be slid laterally.
includes a second pulse motor 24 for lateral feeding, and the motor 24.
A screw shaft 26 rotated via a belt 25 is supported by the screw shaft 26, and a female screw member 27 fixed to the substrate 20 is screwed onto the screw shaft 26. This results in
As the motor 24 rotates, the entire winding unit 8 is slid laterally via the screw shaft 126. Between the left and right side frames 28 and 28 of the unit 8, there is a roll support shaft 29 that supports the take-up roll 6'' of the transferred film 6, a slack removing roller 30 for the transfer film 6, and a roller 30. A presser roller 31 for sandwiching the transfer film 6 is installed between the guide roller 18 in the film supply unit 7 and
Similarly, the pinion 32a is rotated by the rotation of the pinion shaft 32.
, 32a and a guide roller 34 that is moved back and forth via rack shafts 33, 33. Furthermore, a slack removing motor 36 is attached to one side frame 28 to rotate the slack removing roller 30 via a belt 35; The transfer film 6 is constantly pulled in the take-up direction, so that the transfer film 6 is always maintained at a predetermined tension between the guide roller 18 in the film supply unit 7 and the guide roller 34 in the take-up unit 8. ing. Furthermore, as shown in Figure 2,
On the opposite side of the fixed mold 2 to the movable mold 3, there are two molds 2.3.
A clamp member 37 that fixes the transfer film 6 when facing each other.
...37 are provided.

However, as shown in FIG. 3, the left and right sides of the transfer film 6 are provided with black painted portions 6b6C that are continuous in the longitudinal direction, and one of the black painted portions 6b has the respective designs 6a and 6C on the film 6. . . . First slits 6 d for vertical positioning are provided corresponding to 6 a, respectively,
Further, the other black painted portion 6C is provided with a second slit 6e for lateral positioning that is continuous in the longitudinal direction. The connecting member 1 in the film supply unit 7
A first position detector 41 is attached to the lower part of the movable base 5 in correspondence with the passing position of the first slit 6d...6d, and a second position detector 41 is attached to the lower part of the movable base 5 corresponding to the passing position of the second slit 6e.
A position detector 42 is attached.

As shown in FIG. 3, these detectors 4 and 42 have an optical fiber 44 for transmitting light and a light receiving light connected to a mouth-shaped main body 43 provided with a notch 43a into which the side portion of the transfer film 6 is inserted. One end portion 44a, 45a of the fiber 45 is cut into the above-mentioned cut 4.
In each of the second and second position detectors 4 and 42, a second and second light emitting lamp is attached to the other end 44b of the light emitting optical fiber 44. 46 and 47 are arranged facing each other, and the light receiving optical fiber 4
5, second and second sensors 48 and 49 are arranged to face each other at the other end 45b of the transfer film 6, so that the slit 6d (6e) in the transfer film 6 is located between the opposing ends 44a and 458 of both the optical fibers 44 and 45. At times, detection light projected from the lamp 46 (47) is input to the sensor 48 (49).

Here, to explain the characteristics of the sensor 48 (the same applies to the sensor 49), as shown in FIG. It has a light-receiving zone 48a of a certain area that is irradiated, and first and second terminals 48 and 482 that respectively output signals according to the light-receiving state of the zone 48a. The sum of the output values E and E2 from both terminals 48 and 482 corresponds to the total amount of human light entering the light receiving zone 48a, and both output values E and E2 change depending on the light incident position in the light receiving zone 48a. , for example, as shown in FIG.
6e) is deviated to one side of the light receiving zone 48a, the output value E1 from the terminal 481 on the deviated side becomes large, and the output value E2 from the terminal 482 on the opposite side becomes small, As a result, El > E2, and the same figure (b
), when the light incident position X is deviated to the opposite side, El < E2. And both output values Et, E2
The magnitude of the difference aE=E1-E2 corresponds to the amount of deviation of the light-receiving zone 48a from the center line Y, and the + and - signs thereof correspond to the direction of deviation.

Therefore, when the light incident position X coincides with the center line Y of the light-receiving zone 48a, as shown in FIG. 3C, E1=E2 and the difference AE=O.

Next, the configuration of a control circuit that controls the operation of the first and second pulse motors 15 and 24 in accordance with the outputs of the second and second sensors 48 and 49 will be described. Note that the control circuit is connected to the first sensor 48
a part that controls the first pulse motor 15 by the output of the
It is composed of a part that controls the first pulse motor 15 and the second pulse motor 24 by the output of the second sensor 49, but since both parts have almost the same configuration, the first pulse motor is controlled by the output of the first sensor 48. The configuration of the part that controls the motor 15 will be explained.

As shown in FIG. 5, this control circuit 50 receives two output signals a and a2 from the first sensor 48 and calculates the sum (or average value) of output values E1 and E2 indicated by both signals a and a2. E
An amplifier 51 calculates the sum and outputs it as an addition signal.
Similarly, the output signals a and a2 of the sensor 48 are input, and the difference between the two output values E-1 and Ez is AE (=Et-E2)
A comparator 52 that calculates and outputs this as a subtraction signal C.
, a high-speed feed determiner 53 to which the addition signal C is input, a low-speed fine-speed feed determiner 54 to which the addition signal C and the subtraction signal C are input, and a feed direction determiner 55 to which the subtraction signal C is input. has. Then, the high speed feed determination device 5
3 outputs a high-speed feed signal d when the value E indicated by the addition signal is less than a predetermined value Eo, that is, when the amount of light incident on the light receiving zone 48a of the sensor 48 is less than a predetermined value. This signal d passes through a waveform shaper 56 and a feed amount detector 57 that detects the feed base from the output time of the signal d, and then passes through a high-frequency oscillator 58 for high-speed feed.
The signal e is input to the enable terminal of the signal e, and the oscillator 58 is activated to output the high-speed feed pulse signal e, and the gate 60 on the output circuit 59 of the signal e is opened.

Further, the low-speed slow-speed feed determiner 54 outputs the value E indicated by the addition signal.
exceeds a predetermined value Eo, that is, when the amount of light incident on the light receiving zone 48a of the sensor 48 exceeds a predetermined amount, a low-speed slow feed signal f is output, and the value AE indicated by the subtraction signal C is equal to or less than a predetermined value 1 UEO. When this occurs, that is, when the amount of deviation of the light incident position with respect to the center of the light receiving zone becomes less than or equal to a predetermined amount, a switching signal 9 is output. The low-speed slow feed signal f is sent to a waveform shaper 61 and a high-speed feed completion detector 6 that detects that the high-speed feed is completed since the signal f is output.
2, the signal is input to the enable terminal of a low frequency oscillator 63 for low-speed fine-speed feed, and the oscillator 63 is activated to output a pulse signal for low-speed fine speed, and the switching signal is input to the switching terminal of the oscillator 63. and switches the frequency of the pulse signal from a low frequency to an extremely low frequency. Here, a gate 66 to which the high-speed feed signal d is input via an inverter 65 is input to the output circuit 64 for the low-speed slow pulse signal.
is provided. Therefore, the pulse signal is output only when the high-speed feed signal d is OFF.

Further, the feed direction determiner 55 determines the value A indicated by the subtraction signal C.
A direction command signal i instructing forward rotation or reverse rotation is output depending on the + or - sign of E. A gate 69 is also provided on the output circuit 67 for this signal i, to which the high-speed feed signal d is inputted via the inverter 68, so that the direction command signal i
is output only when the high-speed feed signal d is OFF.

The output circuits 59 and 64 of the high frequency oscillator 58 and the low frequency oscillator 63 and the output circuit 6 of the feed direction determiner 55
7 is connected to the first pulse motor 15 via the driver 70, and the motor 15 is connected to each of the above output circuits 59, 64, 6.
It is designed to be rotationally driven in accordance with pulse signals e and h and a direction command signal i inputted through the reference numeral 7. here,
The enable terminal of the high frequency oscillator 58 is input with a manual high speed feed signal j for manual high speed feed, and the enable terminal of the low frequency oscillator 63 is input with a manual low speed slow feed signal for manual low speed or slow speed feed. k is now being input. Furthermore, manual direction changeover switch 7
1 is provided, so that when the gate 73 provided in the output circuit 72 of the switch 71 is opened by the high speed feed signal d, the feed direction command signal 1 can be manually output.

Note that in the circuit that controls the operation of the second pulse motor 15.24 in accordance with the signal from the second sensor 49, a stop determination device is provided in place of the high-speed feed determination device 53 in the control circuit 50 of FIG. A stop signal is output to the first pulse motor 15 when the value E indicated by the addition signal from the amplifier 51 is less than a predetermined value EO, and the high frequency oscillator 58 in the circuit 50 of FIG. 5 is removed. ing.

The rest of the configuration is similar to the circuit 50 in FIG. 5, and the low speed, slow speed, and feed direction of the second pulse motor 24 are controlled in accordance with the output signals of the low speed and slow speed determiner and the feed direction determiner. It will be done.

Next, the operation of the above embodiment will be explained in flow 1! of FIG. - This will be explained with reference to the chart below.

First, when a film feed command is output in a state where the pair of fixed molds 2 and movable molds 3 in the simultaneous molding and transfer device 1 are separated, the high-speed feeding of the transfer film 6 is performed after a predetermined initialization is performed. - (Step 8 in Figure 6)
, 82). This high-speed feed is performed by a high-frequency pulse signal e output from the high-frequency oscillator 58 in response to the high-speed feed signal d.
This is done by rotating the first pulse motor 15 at high speed in a predetermined feeding direction, thereby sending out the transferred portion of the transfer film 6 downward, and the next untransferred portion of the pattern 6a being transferred to both of the above. It is sent between molds 2 and 3. When the pattern 6a is transferred to a position where it has a predetermined positional relationship with both molds 2 and 3, the first slit 6d on one side of the film 6 is located at the installation position of the first position detector 41. The detection light reaches the first sensor 48 from the first lamp 46 via the light emitting optical fiber 44, the slit 6d, and the light receiving optical fiber 45 (step 83). As a result, the sum E of the output values E and E2 indicated by the output signals a and a2 of the first sensor 48 becomes larger than the predetermined value Eo, and the high-speed feed signal d becomes OF
F, the low-speed fine-speed feed signal t is output, the low-frequency oscillator 58 is activated, and the first pulse motor 15 starts to rotate at a low speed due to the low-frequency pulse signal output from the oscillator 58 ( Step Sa). When the difference zHH between the output values El and E2 becomes less than the predetermined value AEO, that is, the first slit 6d is located near the center of the light receiving zone 48a of the sensor 48 (the terminal 45a of the light receiving optical fiber 45 in the position detector 41). By outputting the switching signal g when the low frequency oscillator 6 reaches the center of
The frequency of the pulse signal output from the first pulse motor 3 is switched from a low frequency to an extremely low frequency, and the rotational speed of the first pulse motor 15, that is, the feeding speed of the transfer film 6 is switched to a slow speed (step Ss). At this time, the difference between the above output values is 7
A feed direction command signal i is output according to the + and - signs of 1E, and the first slit 6d is aligned with the light receiving zone 48 of the sensor 48.
When it is in front of the center of a, it is advanced at a slow speed, and when it has passed the center, it is moved back at a slow speed. Then, when the slit 6d is located within an extremely small tolerance range with respect to the center of the light receiving zone, that is, the difference AE is
When E40 is reached, the slow speed feeding is stopped, thereby completing the vertical positioning of the transfer film 6 (steps Se, Sy).

On the other hand, the lateral position of the transfer film 6 may shift during the above-described vertical feeding. In this case, the incident position of the detection light that enters the second sensor 49 from the second lamp 47 through the second slit 6e is shifted from the center of the light receiving zone 49a in the sensor 49, and as a result, the sensor 4
The difference 71IE between the output values E1 and E2 of No. 9 becomes larger than the predetermined value AEo.

At this time, the control circuit sends a low frequency pulse signal and the above difference A.
By outputting a feed direction command signal corresponding to the + or - sign of E to the second pulse motor 24, the motor 24 rotates at a low speed in a direction that reduces the difference AE, as shown in FIG. The winding unit 8 is driven laterally (step Sa). When the difference 7ffE becomes equal to or less than the predetermined value JEo, the frequency of the pulse signal is switched to an extremely low frequency and the second pulse motor 24 rotates at a slow speed, and in this state, the difference /JE becomes approximately so that it becomes zero,
That is, the second slit 6e of the transfer film 6 is the second sensor 4.
The lateral position of the transfer film 6 is adjusted so that it is located near the center of the light receiving zone 49a at 9 (near the center of the end 45a of the light receiving optical fiber 45 at the second position detector 42) (steps 89 to 9). 511).

Note that when the transfer film 6 is significantly shifted in the lateral direction and the position of the second slit 6e deviates from the light receiving zone 49a of the second sensor 49, the sum E of the output values El and E2 of the sensor 49 becomes the predetermined value Eo. When the following happens, a stop signal is output to the first pulse motor 15, and the feeding operation of the transfer film 6 is stopped. At this time, an alarm such as a buzzer may be activated.

As described above, the vertical and horizontal positions of the transfer film 6 are precisely positioned. Therefore, when the fixed mold 2 and the movable mold 3 are clamped after the feeding of the film 6 is completed and the molten resin is injected to form a molded product, the film is always kept in a predetermined positional relationship with the molded product. The pattern 6a on 6 will be transferred with high accuracy. In particular, the above-mentioned first and second sensors 48, 49 are extremely compact, and by using optical fibers 44, 45 as in this embodiment, the position detectors 4, 4
2 can be installed in a narrow space between a pair of molds 2.3.

[Brief explanation of drawings]

1 to 6 show embodiments of the present invention. FIGS. 1 and 2 are a front view and a central vertical sectional side view of the simultaneous forming transfer device, and FIG. 3 is a schematic configuration diagram of the position detection means, and FIG. FIG. 4 is a diagram illustrating the characteristics of the sensor in the position detecting means, FIG. 5 is a block diagram of the control circuit, and FIG. 6 is a flowchart showing the operation. FIG. 7 is an explanatory diagram of problems in the prior art. 1... Simultaneous molding transfer device, 2.3... Mold, 6...
Transfer film, 6a... Design, 6d, 6e... Slit, 15... Film feeding means (first pulse motor), 24... Width direction position adjustment means (second pulse motor), 44.45 ...Optical fiber, 48.49...
Position detection means (second and second sensors), 50...control means (control circuit).

Claims (6)

[Claims] (1) A positioning device for the transfer film in a simultaneous molding transfer device in which a transfer film is sandwiched between a fixed mold and a movable mold, and the design on the transfer film is transferred to a molded product at the same time as injection molding. a film feeding means provided on either the fixed mold or the movable mold to transport the transfer film by passing between the molds in a separated state; and a slit provided in the transfer film at every pitch. A light projection means for irradiating the detection light onto a passing position, a position detection means for receiving the detection light that has passed through the slit, and a control means for controlling the operation of the film feeding means in accordance with an output signal of the detection means. and the position detection means is constituted by a sensor that outputs a signal indicating the amount of incident light and the position of the incident light in a certain light receiving zone, and the control means is configured such that the amount of incident light indicated by the signal is a predetermined amount. In the following cases, the film feeding means is operated at high speed, and when the amount of incident light exceeds a predetermined amount, it is switched to low speed feeding, and when the incident light position is located in the center of the light receiving zone, the film feeding means is stopped. A transfer film positioning device for a simultaneous molding and transfer device, characterized in that it operates. (2) The position detection means is such that the sum of the output values from the two output terminals corresponds to the amount of light incident on the light receiving zone, and the absolute value of the difference between both output values and the + and - signs are the center of the light receiving zone. The control means changes the operation of the film feeding means from high speed to low speed when the sum of both output values exceeds a predetermined value. At the same time as switching to feed, when the absolute value of the difference between both output values becomes less than a predetermined value, it further switches to slow feed, and in this slow feed state, the difference is within a certain tolerance range according to the + or - of the above difference. 2. A transfer film positioning device for a simultaneous molding and transfer device according to claim 1, which operates to move the film feeding means forward or backward so as to fit the transfer film within the range of 1 to 3. (3) The light projecting means and the position detecting means are provided at a position apart from the transfer film, and the light projecting means irradiates the detection light to the passing position of the slit in the transfer film via the optical fiber, and the position detecting means 3. A transfer film positioning device for a simultaneous molding and transfer device according to claim 1 or 2, wherein the transfer film positioning device receives the detection light that has passed through the slit via an optical fiber. (4) A positioning device for the transfer film in a simultaneous molding transfer device in which a transfer film is sandwiched between a fixed mold and a movable mold, and the design on the transfer film is transferred to the molded product at the same time as injection molding. a film feeding means provided on either the fixed mold or the movable mold to transport the transfer film by passing between the molds in a separated state; and a width of the transfer film transported by the film transporting means. a width direction position adjustment means for adjusting the position in the direction, and a passing position of a first slit for detecting the position in the feed direction provided at every pitch in the transfer film and a second slit for detecting the position in the width direction continuous in the feed direction. first and second light projecting means that respectively irradiate detection light to the first and second position detection means that respectively receive the detection light that has passed through the first and second slits, and outputs of these position detection means. and a control means for controlling the operation of the film feeding means and the widthwise position adjusting means in accordance with a signal, and the first and second position detecting means,
The control means includes a sensor that outputs a signal indicating the amount of incident light and the position of the detected light in a certain light receiving zone, and when the amount of incident light indicated by the output signal of the first position detection means is less than a predetermined amount, The film feeding means is operated at a high speed, and when the amount of incident light exceeds a predetermined amount, the film feeding means is switched to a low speed feeding operation, and when the incident light position is located in the center of the light receiving zone of the first position detection means, the film feeding means is operated. Also, when the amount of incident light indicated by the output signal of the second position detection means is less than a predetermined amount, the film feeding means is stopped, and when the amount of incident light is more than a predetermined amount, the light incident position is changed to the second position. A transfer film of a simultaneous molding and transfer device, characterized in that the width direction position adjusting means is operated to drive the widthwise position adjustment means so that the light incident position is located at the center when the detection means is deviated from the center of the light receiving zone. Positioning device. (5) The first and second position detection means are such that the sum of the output values from the two output terminals corresponds to the amount of light incident on the light receiving zone, and the absolute value of the difference between the two output values and the + and - signs are different from each other. The control means is configured with sensors corresponding to the amount and direction of deviation of the light incident position with respect to the center of the light receiving zone, respectively, and the control means detects when the sum of the two output values of the first position detection means exceeds a predetermined value. In addition to switching the operation of the film feeding means from high speed feeding to low speed feeding,
When the absolute value of the difference between both output values becomes less than a predetermined value, the mode is further switched to slow speed feed, and in this slow speed feed state, the difference between + and - of the above difference is changed to fine speed feed.
The film transport means is moved forward or backward according to the difference within a certain tolerance range, and when the sum of the two output values of the second position detection means becomes equal to or less than a predetermined value, the film transport means and at the same time, when the sum of the output values is greater than or equal to a predetermined value, the width direction position adjustment means is adjusted so that the difference falls within a certain tolerance range according to + or - of the difference between the two output values. A transfer film positioning device for a simultaneous molding and transfer device according to claim 4, which operates to drive in the direction of. (6) The first and second light projecting means and the first and second position detection means are provided at positions apart from the transfer film, and the first and second
The light projecting means irradiates detection light through the optical fiber to the positions where the transfer film passes through the first and second slits, and the first and second position detecting means detect light passing through the first and second slits. A transfer film positioning device for a simultaneous molding and transfer device according to claim 4 or 5, which receives light through optical fibers, respectively.