JPH0159094B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is directed to injection molding of a resin molded product and positioning of the transfer film in a simultaneous molding transfer device that transfers a pattern 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 interposed between a fixed mold and a movable mold, and the design on the film is transferred to a molded product at the same time as injection molding, the above-mentioned fixed mold or movable mold One of the molds is provided with a film feeding device for transporting the transfer film by passing it between the two molds, and this device transports the transfer film one pitch at a time before the mold is closed for 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 transfer position of the design onto the molded product. Therefore, this type of simultaneous forming transfer device is provided with a transfer film positioning device that stops the feeding device when an optical sensor detects an identification mark provided for each pitch on the transfer film. However, with conventional positioning devices, the transfer film cannot be accurately positioned at the specified position due to the time delay between when the sensor detects the mark and when the feeding device completely stops. . Further, in order to cope with this problem, it is possible to reduce the feeding speed of the transfer film, but if this is done, the efficiency will be significantly deteriorated.

To solve the above-mentioned problem regarding positioning of a transfer film in a simultaneous forming transfer device, there is an invention disclosed in, for example, Japanese Patent Laid-Open No. 59-204522. In this invention, two sensors are arranged at appropriate intervals along the transfer direction of the transfer film, and when the upstream sensor detects a mark, the feeding speed is switched from high to low, and then the downstream sensor The feed is stopped when the sensor detects the mark, and it is expected that positioning errors due to delays in stopping the film will be reduced. However, even with such a method, there is a limit to the positioning accuracy due to the characteristics of the sensor itself, and positioning cannot be performed with higher accuracy. 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. In the figure, the position shown by the solid line (a) and the position shown by the chain line (b)
The position of mark B cannot be distinguished between the two, 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 a television camera on the image-receiving surface, and controls the feeding device in a feedback manner so that the mark is positioned at a predetermined position (generally at the center) of the image-receiving surface. According to this, positioning accuracy is significantly improved. 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 actual situation regarding the positioning of a transfer film in a simultaneous molding and transfer device. The detection means for detecting marks is extremely compact and can be installed even in the narrow space between a pair of fixed and movable molds, and the positioning device is capable of positioning the transfer film with high precision. The purpose is to realize this.

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 a fixed mold or a movable mold to transport a transfer film through the space between the two molds, and a slit provided on the transfer film for each pitch. a light projecting means for irradiating the detection light to a passing position of the film; 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, the film feeding means is switched to a low speed feeding operation. 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, 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 the two outputs corresponds to +, -. 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 the sensor and causes the feeding means to move at high speed when the sum of the 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 the direction in which the difference becomes smaller depending on the + or - sign of the difference, and when the absolute value of the difference falls within an extremely small tolerance range, the feeding means is moved. configured to stop. In this way, the positioning accuracy of the transfer film can be further improved.

In addition to the configuration of the first invention, the second invention of the present application further includes 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 the output signal of the second position detection means, and when the amount of incident light is greater 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 so that the light incident position falls within the above range according to the deflection direction.

Incidentally, the light projecting means in the above first and second inventions,
The second light projecting means may emit the detection light to a predetermined position of the transfer film via an optical fiber, and the position detection means and the second position detection means may receive the detection light via the optical fiber.

(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 the simultaneous molding transfer device, the transfer film is positioned with extremely high accuracy with respect to the mold. 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 also no disadvantage of reduced durability 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. still,
This embodiment is common to the first and second inventions of the present application.

First, the general structure of the simultaneous molding and transfer device will be explained with reference to FIGS. In addition, there is an injection nozzle 4 for molten resin on the back of the fixed mold 2.
is provided, and the movable mold 3 is attached to a movable base 5 that is reciprocated in the front and back direction (left and right direction in FIG. 2) by a driving means (not shown) such as a cylinder.
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, a cavity of a predetermined shape is formed between the molding surfaces 2a and 3a of both molds 2 and 3, and the molten resin injected from the injection nozzle 4 is injected into this cavity. It is designed to be supplied and filled through an injection passage 2b provided in the fixed mold 2.

On the other hand, the movable table 5 has a large number of transfer patterns 6.
A feeding device for a belt-shaped transfer film 6 formed by drawing a...6a in a line is provided. This feeding device is composed of a film supply unit 7 provided at the upper part of the movable table 5 and a film winding unit 8 provided at the lower part of the movable table 5. Then, the left and right side frames 9 of the supply unit 7,
9, 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 a presser roller 12 which holds the transfer film 6 between the roller 11 and the roller 11 are pivotally supported, and one side frame 9 drives the feed roller 11 via a pair of gears 13 and 14. A first pulse motor 15 is attached. Further, rack shafts 16, 16 are supported by the side frames 9, 9 so as to be slidable back and forth, and the transfer film 6 is mounted on a connecting member 17, which is installed between the front ends of both the rack shafts 16, 16. A guide roller 1 that guides the mold between the fixed mold 2 and the movable mold 3 located below.
8 is pivoted. Then, both the above-mentioned rack shafts 1
Pinions 19a and 19a mesh with 6 and 16, respectively.
A pinion shaft 19 is provided, and by rotating the pinion shaft 19, the guide roller 1
8 is moved back and forth, so that the passing position of the transfer film 6 between the fixed mold 2 and the movable mold 3 can be adjusted back and forth.

On the other hand, the film winding unit 8 is connected to engagement blocks 21...21 fixedly provided on the upper surface of the substrate 20.
is engaged with rails 22, 22 fixed to the lower surface of the movable base 5 in the horizontal direction, so that it can be slid laterally, and the bracket 23 fixed to the movable base 5 has a A second pulse motor 24 for lateral feeding and a screw shaft 26 rotated by the motor 24 via a belt 25 are supported, and a female screw member 27 fixed to the substrate 20 is attached to the screw shaft 26. They are screwed together. Thereby, the entire winding unit 8 is slid laterally via the screw shaft 26 in response to the rotation of the motor 24. Between the left and right side frames 28, 28 of the unit 8, there is a roll support shaft 29 for supporting the take-up roll 6'' of the transferred film 6, a slack removing roller 30 for the transfer film 6, and a roll support shaft 29 for supporting the take-up roll 6'' of the transferred film 6; A presser roller 31 for holding the transfer film 6 is installed between them, and similarly to the guide roller 18 in the film supply unit 7, rotation of the pinion shaft 32 causes pinions 32a, 32a and rack shafts 33, 3 to be connected.
A guide roller 34 is provided which is moved back and forth via the guide roller 3. Further, a slack removing motor 36 is attached to one side frame 28 to rotate the slack removing roller 30 via a belt 35, and this motor 36 winds up the transfer film 6 via the slack removing roller 30. The film supply unit 7
The transfer film 6 is always maintained at a predetermined tension between the guide roller 18 in the winding unit 8 and the guide roller 34 in the winding unit 8. As shown in FIG. 2, on the surface of the fixed mold 2 facing the movable mold 3, there are clamp members 37...37 for fixing the transfer film 6 when the molds 2 and 3 are in contact with each other.
is provided.

However, as shown in FIG. 3, there are black painted areas 6 on both left and right sides of the transfer film 6 that are continuous in the longitudinal direction.
b, 6c are provided, and each pattern 6a...6 on the film 6 is provided in one black painted part 6b.
First slits 6d...6d for vertical positioning are provided corresponding to the positions a, respectively, and a second slit 6e for horizontal positioning that continues in the longitudinal direction is provided in the other black painted part 6c. There is. A first position detector 41 is attached to the connecting member 17 of the film supply unit 7 in correspondence with the passage position of the first slits 6d... A second position detector 42 is attached corresponding to the position. As shown in FIG. 3, these detectors 41 and 42 are provided with a notch 43a into which the side portion of the transfer film 6 is inserted, and a U-shaped main body 43 has an optical fiber 44 for transmitting light and an optical fiber for receiving light. 45 are attached to opposite sides of the notch 43a, and the other end of the light emitting optical fiber 44 is attached to each of the first and second position detectors 41, 42. 44b, first and second projecting lamps 46, 47 are disposed facing each other, and the other end 45b of the light receiving optical fiber 45 is provided with a first and second projecting lamp 46, 47 facing each other.
The second sensors 48, 49 are disposed oppositely, so that the opposite ends 44a, 4 of the optical fibers 44, 45
A slit 6d in the transfer film 6 between 5a,
When 6e is positioned, detection light projected from lamps 46 and 47 is input to sensors 48 and 49.

Here, to explain the characteristics of the sensor 48 (the same applies to the sensor 49), as shown in FIG.
a light-receiving zone 48a of a certain area facing the fiber 45 and irradiated with detection light from the fiber 45;
It has first and second terminals 48 ₁ and 48 ₂ that respectively output signals according to the light receiving state of 8a. The sum of the output values E ₁ and E ₂ from both terminals 48 ₁ and 48 ₂ corresponds to the total amount of light incident on the light receiving zone 48a, and both output values E ₁ and E ₂ correspond to the total amount of light incident on the light receiving zone 48a.
For example, as shown in FIG. 4a, when the light incident position The output value E ₁ from the terminal 48 ₁ on the opposite side becomes larger, and the output value E ₂ from the opposite terminal 48 ₂ becomes smaller. As a result, E ₁ > E ₂ and As shown in , when the light incident position X is deviated to the opposite side, E ₁ < E ₂
becomes. Then, the difference ΔE between both output values E ₁ and E ₂ = E ₁ −
The magnitude of E ₂ 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 .

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 first and second sensors 48 and 49 will be described. The control circuit includes a part that controls the first pulse motor 15 based on the output of the first sensor 48, and a part that controls the first pulse motor 15 based on the output of the first sensor 48.
It is composed of a part that controls the first pulse motor 15 and the second pulse motor 24 by the output of
Since both parts have substantially the same configuration, the first sensor 4
The configuration of the part that controls the first pulse motor 15 using the output of the motor 8 will be explained.

As shown in FIG. 5, this control circuit 50 receives the two output signals a ₁ and a ₂ of the first sensor 48 and outputs the output values E ₁ and E ₂ indicated by both signals a ₁ and a ₂ . An amplifier 51 that calculates the sum (or average value) E and outputs it as an addition signal b is inputted with the output signals a ₁ and a ₂ of the sensor 48, and the difference ΔE between the two output values E ₁ and E ₂ is inputted.
(=E ₁ - _{E 2} ) and outputs it as a subtraction signal c; a high-speed feed determiner 53 to which the addition signal b is input; Input low speed slow feed judge 5
4, and a feed direction determiner 5 to which the subtraction signal c is input.
5. Then, the high speed feed determination device 53
is, when the value E indicated by the addition signal b is less than the predetermined value _E0 ,
That is, when the amount of light incident on the light receiving zone 48a of the sensor 48 is less than a predetermined amount, the high speed sending signal d is output. This signal d is inputted to the enable terminal of a high-frequency oscillator 58 for high-speed feed through a waveform shaper 56 and a feed amount detector 57 that detects the feed amount from the output time of the signal d, and the oscillator 58 is activated to perform high-speed feed. At the same time, the gate 60 on the output circuit 59 of the signal e is opened.

Further, when the value E indicated by the addition signal b exceeds a predetermined value _E0 , the low-speed slow-speed feed determiner 54 detects that the sensor 4
When the amount of light incident on the light-receiving zone 48a of No. 8 exceeds a predetermined amount, a low-speed, slow-speed feed signal f is output, and when the value ΔE indicated by the subtraction signal c becomes less than the predetermined value ΔE ₀ , that is, the center of the light-receiving zone. When the amount of deviation of the incident light position with respect to
Output. Then, the low-speed fine-speed feed signal f passes through a waveform shaper 61 and a high-speed feed completion detector 62 that detects that high-speed feed has been completed from the output of the signal f, and then a low-frequency oscillator 63 for low-speed fine feed. input to the enable terminal, and the oscillator 63
is operated to output a low-speed slow pulse signal h, and the switching signal g is input to the switching terminal of the oscillator 63 to switch the frequency of the pulse signal h from a low frequency to an extremely low frequency. Here, the output circuit 64 for the low-speed slow pulse signal h is provided with a gate 66 to which the high-speed feed signal d is inputted via an inverter 65. Therefore, the pulse signal h is output only when the high-speed feed signal d is OFF.

Further, the feed direction determiner 55 outputs a direction command signal i instructing forward rotation or reverse rotation depending on the + or - sign of the value ΔE indicated by the subtraction signal c. 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. will be done.

Then, the output circuits 59 and 64 of the high frequency oscillator 58 and the low frequency oscillator 63 and the feed direction determiner 5
5 output circuit 67 and the first output circuit 67 via the driver 70.
It is connected to a pulse motor 15, and the motor 15 is driven to rotate in response to pulse signals e, h and direction command signal i inputted through the respective output circuits 59, 64, 67. Here, a manual high-speed feed signal j for manually high-speed feeding is input to the enable terminal of the high-frequency oscillator 58, and a manual low-speed signal j for manually causing low-speed or slow-speed feed is input to the enable terminal of the low-frequency oscillator 63. The slow feed signal k is now input.
Furthermore, a manual direction changeover switch 71 is provided,
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 l can be manually output.

Note that, depending on the signal from the second sensor 49, the first and second
In the circuit that controls the operation of the pulse motors 15 and 24, a stop determiner is provided in place of the high-speed feed determiner 53 in the control circuit 50 of FIG. value
A stop signal is output to the first pulse motor 15 when E ₀ or less, and the high frequency oscillator 58 in the circuit 50 of FIG. 5 is removed. The rest of the configuration is the same as the circuit 50 in FIG. 5, and the low speed, slow speed feed, and control of the feeding direction of the second pulse motor 24 is controlled according to 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 with reference to the flowchart of FIG.

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 from each other, after a predetermined initialization is performed, the transfer film 6 is fed at high speed. (Steps S ₁ and S ₂ in FIG. 6). 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 pulse motor 15 at high speed in a predetermined feeding direction, whereby the transferred portion of the transfer film 6 is sent downward, and the next untransferred portion of the pattern 6a is transferred to both the molds 2, Sent in between 3. And this pattern 6a
When the film 6 is moved to a position where it has a predetermined positional relationship with respect to both molds 2 and 3, the first slit 6d on one side of the film 6 reaches the installation position of the first position detector 41, and the first Detection light enters the first sensor 48 from the lamp 46 via the light emitting optical fiber 44, the slit 6d, and the light receiving optical fiber 45 (step _S3 ). Thereby, the output value E ₁ indicated by the output signals a ₁ and a ₂ of the first sensor 48,
When the sum E of _E2 becomes larger than the predetermined value _E0 , the high-speed feed signal d is turned off, and the low-speed slow feed signal f is output and the low-frequency oscillator 58 is activated.
The first pulse motor 15 begins to rotate at a low speed due to the low frequency pulse signal h output from the oscillator 58 (step S ₄ ). And the above output value
When the difference ΔE between E ₁ and E ₂ becomes less than the predetermined value ΔE ₀ , that is, the first slit 6d is located in the light receiving zone 4 of the sensor 48.
8a (near the center of the terminal 45a of the light-receiving optical fiber 45 in the position detector 41), the switching signal g is output, so that the pulse signal h output from the low frequency oscillator 63
The frequency 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 very slow speed (step _S5 ). At this time, + of the difference ΔE between the above output values,
A feed direction command signal i is output according to the sign of -, and when the first slit 6d is in front of the center of the light receiving zone 48a of the sensor 48, it is advanced at a slow speed, and when it has passed the center, it is fed at a slow speed. will be retreated. Then, when the slit 6d is positioned within an extremely small tolerance range with respect to the center of the light receiving zone, that is, when the above-mentioned difference ΔE becomes ΔE≒0, the slow feeding is stopped, and thereby the transfer film 6 is Vertical positioning is completed (step _S6 ,
_S7 ).

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 via the second slit 6e is shifted from the center of the light receiving zone 49a of the sensor 49, and as a result, the sensor 49 output value of
The difference ΔE between E ₁ and E ₂ becomes larger than the predetermined value ΔE ₀ . At this time, the control circuit outputs to the second pulse motor 24 a low frequency pulse signal and a feed direction command signal corresponding to the + or - sign of the difference ΔE.
The motor 24 rotates at low speed in a direction that reduces the difference ΔE, and the winding unit 8 shown in FIGS. 1 and 2 is driven laterally (step S ₈ ). When the difference ΔE becomes less than or equal to the predetermined value ΔE ₀ , the frequency of the pulse signal is switched to an extremely low frequency and the second pulse motor 24 rotates at a very slow speed. In this state, the difference ΔE becomes approximately so that it becomes zero,
That is, the transfer film 6 is moved so that the second slit 6e of the transfer film 6 is located near the center of the light receiving zone 49a of the second sensor 49 (near the center of the end 45a of the light receiving optical fiber 45 of the second position detector 42). The lateral position of is adjusted (steps _S9 to _S11 ).

Incidentally, 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 E ₁ and E ₂ of the sensor 49 becomes a predetermined value. When the value E becomes less than ₀ , 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.

In the manner 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 molded product is always filled with the above-mentioned material in a predetermined positional relationship. The pattern 6a on the film 6 is transferred with high precision. In particular, the first and second sensors 48 and 49 are extremely compact, and by using optical fibers 44 and 45 as in this embodiment, the position detectors 41 and 42 are connected to the pair of molds 2 and 3. It can be installed in narrow spaces.

[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 an explanatory diagram of 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 flow chart showing the operation. 7th
The figure 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 adjusting means (second
pulse motor), 44, 45...optical fiber, 4
8, 49... position detection means (first, second sensor),
50...Control means (control circuit).

Claims (1)

[Scope of Claims] 1. A transfer film in a simultaneous molding transfer device in which a transfer film is interposed 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. The positioning device includes 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 film feeding means provided on the transfer film for each pitch. a light projecting means for irradiating detection light onto a passing position of the slit; a position detection means for receiving the detection light passing through the slit; and a position detection means for controlling the operation of the film feeding means in accordance with an output signal of the detection means. The position detecting means includes a sensor that outputs a signal indicating the amount of incident light and the incident position of the detected light in a certain light receiving zone, and the controlling means includes When the amount of light 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, the film feeding means is operated A transfer film positioning device for a simultaneous molding transfer device, characterized in that it operates to stop the transfer film. 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 correspond to the amount of light incident on the light receiving zone. The control means changes the operation of the film feeding means from high-speed feeding to low-speed feeding when the sum of the above two output values exceeds a predetermined value. At the same time, when the absolute value of the difference between the two output values becomes less than a predetermined value, it is further switched to slow speed feed, and in this slow speed 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 forming and transferring device according to claim 1, which operates to move the film feeding means forward or backward to fit the film. 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 through the optical fiber to the position where the slit passes through the transfer film, and the position detecting means 3. A transfer film positioning device for a simultaneous molding and transfer device according to claim 1, wherein the transfer film positioning device is adapted to receive the detection light that has passed through the slit via an optical fiber. 4. A transfer film positioning device in a simultaneous molding transfer device in which a transfer film is interposed 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 and transporting the transfer film by passing between the molds in a separated state, and the width of the transfer film transported by the film transporting means. a width direction position adjustment means for adjusting the position in the direction; a first slit for detecting the position in the feed direction provided for each pitch on the transfer film; and a passing position of a second slit for detecting the position in the width direction continuous in the feed direction. first and second light projecting means for respectively irradiating detection light onto the
First and second position detecting means each receive the detection light that has passed through the first and second slits, and the film feeding means and the widthwise position adjusting means are operated in accordance with the output signals of these position detecting means. the first and second position detection means are constituted by a sensor that outputs a signal indicating the amount of incident light and the incident position of the detected light in a certain light receiving zone, and the control means However, when the amount of incident light indicated by the output signal of the first position detecting means 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 light incident position is The film transport means is stopped when the film is located at the center of the light receiving zone of the first position detection means, and the film transport means is stopped when the amount of incident light indicated by the output signal of the second position detection means is less than a predetermined amount. At the same time, when the amount of incident light is more than a predetermined amount, the light incident position is
Transfer of a simultaneous molding transfer device, characterized in that the widthwise position adjusting means is operated to drive the width direction position adjusting means so that the light incident position is located at the center when the position detecting means is deviated from the center of the light receiving zone. Film positioning device. 5 The first and second position detection means are arranged so 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 correspond to the light receiving zone. The control means controls the film advance when the sum of the two output values of the first position detection means exceeds a predetermined value. The operation of the means is switched from high-speed feeding to low-speed feeding, and when the absolute value of the difference between the two output values becomes less than a predetermined value, it is further switched to slow-speed feeding, and in this slow-speed feeding state, according to + or - of the above difference. The film feeding means is moved forward or backward so that the difference falls within a certain tolerance range, and the film feeding means is stopped when the sum of the two output values of the second position detection means becomes less than a predetermined value. 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 driven in either direction according to + or - of the difference between both output values so that the error falls within a certain tolerance range. A transfer film positioning device for a simultaneous forming transfer device according to claim 4, which operates to perform the following operations. 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,
The first and second light projecting means irradiate the transfer film with detection light through the optical fibers at the passing positions of the first and second slits, respectively, and the first and second position detecting means 6. A transfer film positioning device for a simultaneous forming and transferring device according to claim 4 or 5, wherein the detection light passing through the slit is received through an optical fiber, respectively.