JPH0318176Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to an automatic detection means for detecting the seal position of a bag material equipped with a high-frequency processing device. The present invention relates to an improvement in a detection mechanism that combines a phototube and a photoelectric conversion operation signal generation function to detect an object by printing a mark or pasting a label to determine a processing position.

(Prior art) Conventionally, the object to be detected, such as by printing a mark or pasting a label, is attached in advance to a synthetic resin film as a workpiece material, and the object to be detected is captured by a phototube. They were printing marks or pasting labels on locations. At this time, in order to ensure the accuracy of the position of the object to be detected, the phototube had to be placed near the workbench because it needed to detect the seal processing part of the high-frequency processing machine, that is, immediately before the workbench. . In this case, the detection of the weakly-powered phototube placed near the workbench is significantly inhibited by electrical noise such as electromagnetic induction of high-voltage radio waves generated by processing equipment during seal processing, and such electrical noise It was discovered that errors occur in the seal position due to this.

Further, there is a device using glass fiber as a recording medium as shown in FIG. 2 of Japanese Patent Application Laid-Open No. 132236/1984 (FIG. 4 of the drawings of the present application). To briefly explain this Fig. 4 below, the glass fiber 4
0, the base end is attached to the machine casing 41, each base end is connected to the same number of beam switches 42 in the machine casing 41, and a fixing jig 43 is attached to each tip of each glass fiber 40 to connect one of the roller conveyors 44. A cardboard box 45 is placed on the roller conveyor 44.
The model card 47 provided on the side edge of the board 46 on which the cardboard box is moved is detected to select the model of the cardboard box 45, and the detected items are converted into three types of signals via the beam switch 42. A cardboard box is produced by selectively taking out cardboard from a taking-out means (not shown). For the above, it is necessary to connect the beam switch and the fixture with a glass fiber, detect the model-specific card passing under the fixture, and convert it into a model-specific signal. In addition to requiring complicated telegraph wiring, model-specific cards had the disadvantage that they were not sensitive to simple markings or labels other than reflective marks encoded in bright and dark areas.

(Problems to be solved by this invention) This invention solves the above problems and uses a phototube as the detector as in the past, but the function of the detector is to detect the position and generate a photoelectric conversion operation signal. By dividing position detection by a phototube into two functions, it is possible to transmit an optical signal to a remote location using an optical transmission medium.
The operation signal generating portion, which is susceptible to the influence of the magnetic field, is placed outside the magnetic field.

(Technical means for solving the problem) The technical means taken by this invention to solve the above problem is that the synthetic resin workpiece is transferred intermittently by a clamp feed type intermittent feed line. The position of the object to be detected is determined by printing a mark or pasting a label on the workpiece in advance to determine the position where the seal is to be applied. A bag-shaped sealing process is performed on the workpiece using a high-frequency current using a high-frequency processing machine installed on the intermittent transfer line, which is detected by a phototube, without being harmed by electrical noise such as electromagnetic induction of high-voltage radio waves. It is an automatic seal processing mechanism, and at the detection position of the detected object,
The light emitting end face and the light receiving end face of one end of a pair of light transmission media are arranged vertically opposite to each other across the object to be detected, or opposite to one side of the object to be detected in a reflective position, and the light transmission medium The other end face is arranged to face the emitter and receiver of the phototube, respectively, which are arranged outside the electric field of the high-frequency processing device.

(Function) While the synthetic resin film workpiece, on which the detected object of the mark or label that determines the processing position is affixed, is intermittently transferred by clamp feeding or roll feeding, it is installed near the high frequency processing machine. The object to be detected is detected by a phototube, and this detection signal is sent through an optical transmission medium to seal the bag shape without being disturbed by electrical noise such as electromagnetic induction of high-voltage radio waves emitted by a high-frequency processor. .

(Example) Hereinafter, an example of this invention will be described in detail based on the drawings.

In the embodiment of this invention, as shown in FIGS. 1 and 2, an automatic sealing machine 1 includes a pair of movable clamps 2, 2' connected by connecting rods 4, 4, and a separate fixed clamp 3. The movable clamps 2, 2' are mounted on the rails D, D so as to be able to reciprocate on the rails D, D via a rod 6 connected to a swing arm 5. ′ and the fixed clamp 3, the long workpieces A and A′ made of synthetic resin film are placed between the rolls 7 on the delivery side,
7' are sent out in two layers, and are connected to a winding roll 7'' provided on the sending side of the fixed clamp 3 so as to be wound up via a motor M'. A clamp-type intermittent transfer line 9 is constructed by connecting one end of the rod 6' connected to the intermittent drive mechanism 8.A high-frequency processing machine 10 that transmits high-frequency waves is installed between the rails D and D between the movable clamps 2 and 2'. The workbench 11 of the high-frequency processing machine 10 is equipped with a press die 1 for applying a bag-shaped seal C to the workpieces A and A' via an arm 13 having an operating cylinder 12.
4 is connected to the intermittent transfer line 9, and the workpieces A, A' are stopped while the workpieces A, A' are stopped.
Seal C is applied to A'. The detection device 15 detects the workpiece A of the high-frequency processing machine 10,
A pair of optical transmission media 18, 18' is arranged between a detection position provided within the electric field B of high-frequency radio waves on the sending side of A' and a light emitter 16 and a light receiver 17 provided outside the electric field B, The light emitting end surface 19 and the light receiving end surface 20 at each end of the light transmission medium 18, 18' are arranged to face a line along which a detected object 21 (described later) passes through the upper and lower surfaces of the workpieces A, A', and The light guide end face 19' of the light transmission medium 18 is connected to the light emitter 16, and the light guide end face 19' of the light transmission medium 18 is also connected to the light receiver 1.
7 and a phototube 22 with a light guide end face 20' of a light transmission medium 18' facing each other. The detected object 21
are provided in advance by printing marks or pasting labels on the surface of the workpiece A at predetermined intervals.
When the detection device 15 detects the object 21 of the workpiece A that is being intermittently transferred by the intermittent transfer line 9, the intermittent drive mechanism that is connected to the detection device 15 via a control panel (not shown) 8, and at the same time stop the workpieces A and A' at the correct position to apply the seal C below the press die 14, and start the high frequency processing machine 10 in response to this stop signal,
By pressing the workpieces A, A' onto the surface of the workbench 11 using the press die 14, the workpieces A,
They are connected so that a seal C is applied at a predetermined position of A'.

In addition, adjustment of the feed length of workpieces A and A' is as follows:
This is done by replacing the crank 24 having the elongated hole 23 of the intermittent drive mechanism 8, and the detection device 15
When detects the detected object 21, the brake 26 on the shaft 25 of the intermittent drive mechanism 8 is activated to stop the intermittent transfer line 9, and in response to a signal indicating the completion of machining of the seal C, the brake is activated by cams 28 and 28' (described later). 2
6 to the clutch 27 to start intermittent transfer again. The cams 28, 28' on the shaft 25 and the microswitches 29, 29' corresponding to each cam 28, 28' are connected to the actuating cylinders 30, 30', 30 of the movable clamps 2, 2' and the fixed clamp 3, respectively. The workpieces A and A' are connected to the receiving tree 31 and the holding tree 32 so as to be sandwiched and transferred, or to be fixed so that they will not be pulled back.

The intermittent transfer line 9a of the automatic sealing machine 1 shown in FIG. Detection device 15 arranged diagonally toward the center position of 21
In another embodiment, workpieces A and A' are pulled out from rolls 7 and 7' and are sandwiched between a feed roll 33 and a presser roll 34, and the feed roll 33 and brake 26 and clutch 27
A drive shaft 35 equipped with
The intermittent feeding of the intermittent transfer line 9a is carried out by the drive shaft 3.
By meshing the gear 36 at the fifth end with the fan-shaped gear 37 and connecting the fan-shaped gear 37 and the crank 24 on the camshaft 38 having the cams 28, 28' via the rod 6', the workpiece A is . The workpieces A and A' are linked together so that a seal C is applied to the workpieces A and A' while the workpieces A and A' are stopped on the workbench 11.

Now, while the workpieces A and A' are being transferred in two layers by the clamp feed type automatic sealing machine 1 shown in FIGS. When the object to be detected 21 reaches the detection position of the detection device 15 and the light is emitted from the projector 16, the light transmission medium 1
8 from the light guide end surface 19', and enters the light emitting end surface 1 at the other end.
When the light being projected from 9 to the light receiver 17 via the light transmission medium 18' is blocked by the detected object 21, the high frequency processing machine 10 is actuated by the signal, and the press die 14 connected to the actuation cylinder 12 is activated. is pressed against the surface of the workbench 11, and the high-frequency processing machine 1 is placed at a predetermined position on the workpieces A and A' that are stopped on the workbench 11.
Apply seal C by high frequency transmission of 0. When the mold 14 is restored after the processing of the seal C is completed, the cams 28 and 2 of the shaft 25 of the intermittent drive mechanism 8 are rotated.
8' reaches the position where it contacts the micro-switches 29, 29, and operates both the micro-switches 29, 29. First, the fixing clamp 3 is released, and the rotation of the shaft 25 is controlled via the clutch 27 to the crank 2.
4. The rod 6', the swinging arm 5 and the rod 6 are transmitted in this order to the movable clamp 2 of the intermittent transfer line 9, so this movable clamp 2 and the movable clamp 2' connected by the connecting rods 4 and 4 are simultaneously transferred. The motor M' is activated to move the workpieces A and A' by moving a predetermined length on the rails D and D in the direction of the arrow P (that is, the length that the next detected object 21 reaches the detection position), and at the same time, the motor M' is started and the workpieces A and A' are wound by the feed amount.

In this state, when the detection device 15 performs high-frequency processing as described above to apply the next seal C, the movable clamps 2 and 2' are unclamped by the signal, and during this time the intermittent transfer mechanism 8 is The cams 28, 28' make one revolution and contact the micro switches 29, 29 again, and the fixed clamp 3 clamps the workpieces A, A' and the movable clamp 2,
2' and release the clamp. At the same time, the clutch 27 on the shaft 25 is switched to the brake 26, so
Return the movable clamps 2, 2' to the starting position,
At the same time, workpieces A and A' are clamped in preparation for the next operation. The same applies to other intermittent transfer lines.

(Effects) Since this invention has the above configuration, it has the following advantages.

(1) In addition to using a phototube as the detector as in the past, the detector function is divided into two functions: position detection and photoelectric conversion operation signal generation, and position detection can be carried out at a remote location using an optical transmission medium. By making it possible to transmit optical signals, locating the operation signal generation part that is easily affected by magnetic fields outside the magnetic field, and combining this detector with a roll-feed automatic sealing mechanism,
Since the seals on the bag material can be applied at the same position without any errors, wastage of the bag material can be minimized by narrowing the seal interval as much as possible.

(2) Compared to conventional systems, the detection position of the object to be detected is placed within the electric field of a high-frequency processing machine, and the phototube placed outside the electric field is connected to a pair of light beams having a light emitting end surface, a light receiving end surface, and a light guiding end surface. Since the conductive medium is used to freely transmit and receive light, the object to be detected can be reliably detected without being hindered by high frequency waves caused by high voltage current.

[Brief explanation of drawings]

Fig. 1 is an overall explanatory diagram of the proposed device, Fig. 2 is an explanatory diagram of the procedure for detecting a detected object in an electric field generated by high-frequency transmission, and Fig. 3 is an explanatory diagram of another embodiment. FIG. 4 is an explanatory diagram of the prior art. Explanation of symbols of main parts, 1...Automatic sealing machine,
9, 9a... Intermittent transfer line, 10... High frequency processing device, 16... Emitter, 17... Light receiver, 18,
18'...Light transmission medium, 19...Light projection end surface, 20
...Light receiving end surface, 19', 20'...Light guiding end surface, 21
...Object to be detected, 22...Phototube, A...Work material, B...Electric field, C...Seal.

Claims (1)

[Scope of utility model registration request] A synthetic resin film workpiece in which the workpiece is intermittently transferred by a clamp-feeding or roll-feeding intermittent transfer line, which is attached to the workpiece in advance to determine the processing position. The position of the object to be detected, such as by printing a mark or pasting a label, is detected by a phototube placed outside the electric field generated during processing by a high-frequency processing machine, and the optical signal is used to operate the high-frequency processing machine installed on the intermittent transfer line. an automatic seal processing mechanism that performs bag-shaped seal processing on the workpiece using high-frequency current; and a light-emitting end face and a light-receiving end face of one end of a pair of optical transmission media, at a detection position of the object to be detected near the high-frequency processing device. The end faces are arranged vertically opposite to each other with the workpiece having the object to be detected interposed therebetween, and the other end face of the optical transmission medium is attached to the emitter and receiver of the phototube, respectively, which are arranged outside the electric field of the high-frequency processing device. An automatic seal position detection device for bag material, characterized in that the seal position is detected by arranging the seals facing each other.