JP2000325892A - Sorting apparatus for molded goods - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to restrict the expulsion action of sample articles to just one stage and to surely sort the sample articles by providing the sorting apparatus with a defective unit passage and a sample article passage so as to branch these passages from a main passage and providing the respective branch sections with expulsion means. SOLUTION: Formed glass bottles B are sent from a forming line to an inspection machine 18. The bottles B for which the inspection ends are fed into the sorting apparatus by impellers 20. The sorting apparatus has the main passage 1, the defective unit passage 2 and the sample article passage 3 on a conveyor 16 for moving the bottles B. Both of the defective unit passage 2 and the sample article passage 3 are branched from the main passage 1. The defective unit expulsion means 4 are disposed near the branching point of the main passage 1 and the defective unit passage 2, and a cullet chute 14 is disposed at the terminal of the defective unit passage 2. When the sample articles flow in the main passage 1 and pass the defective unit expulsion means 4, the defective unit expulsion means 4 eject air by the command of a computer, thereby blowing off the defective units toward the defective unit passage 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for inspecting a molded product such as a glass bottle, and then converting the product to a non-defective product, a defective product, or the like.
The present invention relates to an apparatus for sorting molded articles to be sorted into sample articles.

[0002]

2. Description of the Prior Art FIGS. 10 to 13 show a conventional apparatus for sorting molded articles (glass bottles). FIG. 10 shows the inspection machine 18.
11 is a plan view of the sorting device, FIG. 12 is a plan view of the sorting device, an explanatory diagram showing the relationship between the determination signal and the bottle position signal, and FIG. 13 is an explanatory diagram of the display 45.

The formed glass bottle B is sent from a forming line to an inspection machine 18 as shown by an arrow A. The inspection machine is provided with a plurality of inspection means 19a, 19b, 19c..., For example, 19a is a flaw inspection means, 19b is a foreign matter inspection means, 19c is a thickness inspection means... An inspection of the contents is performed. The bottle fed into the inspection machine 18 is inspected sequentially in the order of the inspection means 19a, 19b, 19c,... While rotating intermittently in a counterclockwise direction. Bottles are classified into non-defective products, defective products, and sample products according to the inspection results. A non-defective product is a passed product having a good inspection result, and a defective product and a sample product are those having a rejected inspection result. The sample product is for confirming the degree of the defect. For example, when it is desired to confirm the degree of the damage of the bottle, the one rejected by the inspection means 19a is set as the sample product. What kind of sample product can be set arbitrarily. The judgment signal from the inspection machine is sent to a computer as control means. The determination signal includes a sampling signal indicating a sample product and a defective signal indicating a defective product (including a sample product).

[0004] After the inspection is completed, the bottle is sent to a sorting device by an impeller 20 having a large number of blades 20a and rotating intermittently. The sorting device has a main passage 31, a defective product passage 32, and a sample product passage 33 separated by a guide 39 on a conveyor 46 for moving the bottle. A defective product sensor 43 and a defective product eliminating means 34 are provided at a branch portion between the main passage 31 and the defective product passage 32. The computer calculates a judgment signal from the inspection machine 18 and a signal from the defective sensor 43 and sets the set timing, and operates the defective product elimination means 34 to transfer the defective product (including the sample product) to the defective product passage 32. Extrude. The defective product removing means 34 is a so-called Danfos having a soft rotating brush. In this method, when a defective product passes, the brush is rotated to bring the tip of the brush into contact with the bottle and push the bottle into the defective product passage 32. The sample product passage 33 is provided on an extension of the defective product passage 32,
A rejection sensor 44 and rejection means 35 are provided at the boundary between the defective product passage 32 and the sample product passage 33. The computer receives the judgment signal from the inspection machine 18 and the rejection sensor 44.
The rejection means 35 is operated by calculating the signal from the controller and the set timing, and a defective product other than the sample product is pushed into the cullet chute 37. In this case, an air nozzle is used as the removing means 35. The air nozzle blows air to the bottle when a defective product other than the sample product passes, and pushes the bottle to the cullet chute 37. At the end of the sample product passage 33, a switching means 36 for switching between collection and disposal of the sample product and a cullet chute 38 are provided. The switching means 36 has a stopper which enters and exits the passage by an air cylinder. When a sample product is collected, the stopper protrudes into the sample product passage 33 to dam the bottle. When discarding, the stopper is retracted from the passage and the bottle is dropped into the cullet chute 38.

[0005] A non-defective sensor 41 and damming means 42 are provided on the downstream side of the branch portion of the main passage 31 from the defective passage 32. Similar to the switching means 36, the damming means 42 has a stopper which moves in and out of the passage by an air cylinder, and dams the bottle in the event that a defective product is not removed, so that the defective product flows downstream. It is to prevent. The computer calculates the timing set by the judgment signal from the inspection machine 18 and the bottle position signal from the non-defective sensor 41, and activates the damming means 42 when the bottle is recognized as being defective, thereby damping the bottle. .

FIG. 12 is an explanatory diagram of a case where a bottle which is not removed by the defective product removing means 34 flows through the main passage 31 to determine whether it is a good product or a defective product. In some cases, defective products flow through the main passage 31 without being rejected due to defective operation of the defective product rejecting means 34. However, if such defective products are allowed to pass through, the defective products must be shipped. So this must be prevented. The determination of a non-defective product or a defective product is performed by a computer comparing a determination signal from the inspection machine 18 with a bottle position signal from the non-defective sensor 41. As shown in FIG. 12, the determination signal has an upwardly convex waveform when the bottle is defective, and the bottle position signal generates an upwardly convex waveform when the bottle passes the non-defective sensor 41. The determination signal is generated immediately after the inspection is performed by the inspection machine 18, but the comparison with the bottle position signal is performed when the bottle passes the non-defective sensor 41, and thus the determination signal used for the determination is used. It is necessary to shift the timing until the bottle flows to the good sensor. This timing is set based on the time that the bottle flows to the non-defective sensor 41 after being detected by the timing sensor 40 placed immediately after the impeller 20. Since this time is related to the speed of the conveyor, the timing to be shifted is calculated by setting the speed of the conveyor in the computer. The computer compares the determination signal shifted in the predetermined timing in this way with the bottle position signal, and when the convex waveform overlaps the bottle position signal in the range of the upward convex waveform indicating a defective determination signal. Determines that the bottle is defective and activates the damming means 42 to dampen the bottle. If the waveforms do not overlap as shown by the broken line in FIG. 12, it is determined that the product is good.

The timing sensor 40 and the defective product elimination means 3
An indicator 45 is provided in a portion between the four in parallel with the conveyor 46. This is a large number of LEDs 47 arranged side by side, and as shown in FIG.
D emits light, and the light also moves as the bottle moves. This emission can be distinguished by color, for example, green for non-defective products, orange for sample products, and red for defective products other than sample products. By looking at the display, the worker can recognize whether or not the bottle is non-defective, and thus can confirm whether or not the sorting device is operating normally.

The display 45 is operated by a computer. The computer emits an LED according to the position of the bottle based on the bottle position signal of the timing sensor 40 and the set speed of the conveyor 46. In addition, the computer emits an LED based on a determination signal from the inspection machine 18.
Determine the color. In this case, there is a timing difference between the time when the computer obtains the determination signal and the time when the computer obtains the bottle position signal from the timing sensor 40, and this timing difference is determined by the worker according to the bottle prior to the operation of the sorting device. Adjust to emit the correct color.

[0009]

However, such a conventional sorting device has the following problems. There is a mistake in sorting sample products. As mentioned above,
Defective products are eliminated by the defective product elimination means 34 and enter the defective product passage 32. Thereafter, non-sample products are eliminated by the elimination means 35, and the remaining products become sample products. In this way, the elimination act has two stages,
The chances of making mistakes are increasing. For example, a bottle removed by the defective product removing means 34 may collide with the guide due to incomplete operation of the means 34, and the order of the removed bottles may be changed next. By changing the order in this way, the exclusion or passage by the next exclusion unit 35 cannot be performed normally. The collection of sample products is troublesome, and the number that can be collected is small. As shown in FIG. 11, the sample product is stopped by the switching means 36 in the sample passage 33 of the conveyor 46. Since the worker is usually near the inspection machine, the worker must move to that position and collect a sample, and the number of bottles dammed in the sample passage 33 on the conveyor 46 is limited. Must be able to collect the bottles one after another, being dammed up immediately. There is a mistake to pass a defective product. As described above, to prevent the defective product from passing, the computer compares the determination signal shifted at a predetermined timing with the bottle position signal, and determines the position of the bottle position signal in the range of the upwardly convex waveform indicating the defective product of the determination signal. When the upwardly convex waveforms overlap, it is determined that the bottle is defective and the damming means 42 is operated to dam the bottle. Now, it is assumed that a certain defective product collides with the guide 39 and flows through the main passage 31 instead of the defective product passage 32 because the operation of the removing unit is incomplete. Since the defective product collides with the guide, the defective product arrives at the non-defective sensor 41 later (after a predetermined timing) than when no collision occurs. When the computer compares the determination signal with the bottle position signal, the determination signal is shifted by a predetermined timing from when the bottle passes the timing sensor 40, and the bottle position signal is because the bottle was sent and reached the non-defective sensor. An upwardly convex waveform is generated later than when no collision occurs. That is, if the bottle is not delayed, the waveform of the determination signal and the waveform of the bottle position signal overlap to make a correct determination that the product is defective, but if the bottle is delayed, the bottle position signal is delayed, as shown by the broken line in FIG. The two waveforms do not overlap and are determined to be non-defective, and a defective bottle will pass. Adjustment of the display is troublesome. As described above, the worker sets the emission color of the LED of the display device to be a correct color.
Adjustments must be made prior to operation of the sorting device. This is because after the computer obtains the judgment signal,
This is an operation for adjusting and setting a timing shift until a bottle position signal is obtained from the timing sensor 40.
Since the light emitting position of the LED is displayed on the display 45, it is easy to adjust it to match the actual bottle flow. You must work while checking the judgment signal by connecting the equipment to the signal output from the inspection machine.

[0010] Molded articles such as bottles are required to be manufactured efficiently at lower cost, and in recent years, production lines have been operating at a considerable speed. Along with this, high-speed processing is also required for the sorting device. When the sorting device is operated at a high speed, there is a high possibility that the molded products collide with each other in accordance with the removing operation, and the above mistakes are further increased.
The present invention makes it possible to prevent such mistakes even when the processing is speeded up.
It also improves the problem described above.

[0011]

SUMMARY OF THE INVENTION The present invention relates to a main passage for a molded product downstream of an inspection machine, a defective product passage and a sample product passage branched from the main passage, and a conveyor for moving the molded product in these passages. A defective product rejecting means for distributing a defective product from the main passage to the defective product passage; a sample product rejecting device for distributing the sample product from the main passage to the sample product passage; and a main passage downstream of both of these removing devices. Damming means, a defective sensor provided near the entrance of the defective product passage, a sample product sensor provided near the entrance of the sample product passage, and the elimination device and the damming device based on signals from the inspection machine and the sensor. Control means for operating a defective product or a sample based on a signal from a defective product sensor or a sample product sensor. There when it was confirmed that not in respective passages, a molded article of a sorting device characterized by damming the damming moldings by operating means.

A first feature of the present invention is that both a defective product passage and a sample product passage are provided so as to be branched from the main passage, and respective elimination means are provided at respective branch portions. Conventionally, it takes 2
Although the elimination action at the stage was necessary, the elimination action of the sample product only needs to be performed in one stage, and the mistakes in the exclusion action do not overlap, so that the sample product can be sorted out without fail.

A second feature of the present invention is that a check in the case where a defective product is not eliminated is performed at the entrance of the defective product passage and the sample product passage. Conventionally, this check is performed on the main passage 31 (non-defective side) on the downstream side of the defective product elimination means 34. However, by performing this check on the defective product or sample product side, mistakes can be completely prevented. That is, in the present invention, even if the operation of the defective product (or sample product) removing means is incomplete and the defective product flows into the main passage, the defective product collides with the guide no matter how late the timing is. The defective product (or sample product) is not detected by the defective product (or sample product) sensor because the defective product (or sample product) does not enter the passage. Therefore, the control means
Based on the signal from the defective product (or sample product) sensor that the bottle has not passed, it is determined that the defective product has flowed to the main passage side, and the damming means is operated to dam the bottle in the main passage.

In the apparatus of the present invention, a timing sensor is provided near the entrance of the conveyor and detects a bottle passing therethrough, and a speed sensor of the conveyor is provided. The present position of each molded article on the main passage may be known. Since the control means knows the position of each bottle flowing in the main passage, the operation of the defective product rejection means and the sample product rejection means can be performed at an accurate timing, and rejection errors can be reduced. In addition, the display of the molded article display described later is more accurate.

In the apparatus of the present invention, in parallel with the main passage, the molded article indicator emits light in parallel with the flow of the molded article, and the LED arranged in parallel with the judgment signal from the inspection machine emits light. And a determination signal indicator for performing the determination. Since the conventional display 45 could not display the judgment signal from the inspection machine, the timing adjustment prior to the operation of the sorting device was troublesome. Since the flow of the judgment signal from the machine is displayed in parallel with the display of the flow of the molded product on the molded product display, the timing can be easily adjusted without using a separate device such as an oscilloscope. .

In the apparatus of the present invention, a sampling conveyor can be connected to the sample product passage. It is preferable that the sampling conveyor is provided in a direction in which the worker is usually on standby (near the inspection machine). At the end of the sampling conveyor, switching means for switching between collection and disposal is installed. By doing so, the worker can collect the sample product with almost no movement. Further, since the sample products are dammed on the sampling conveyor, the number of sample products dammed can be extremely increased.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings (FIGS. 1 to 9) relating to an apparatus for sorting glass bottles according to an embodiment. 1 is a plan view of the inspection machine 18 and the sorting device, FIG. 2 is a plan view of the sorting device in a state where defective products are removed, and FIG. 3 is a plan view of the sorting device in a state where sample products are removed. 4 is a plan view of the sorting apparatus and an explanatory view of the molded article display 8 and the judgment signal display 9. FIG. 5 is a plan view of the sorting apparatus when there is an exclusion error. FIG. 6 is a molded article display 8 and a judgment signal. 7 and 8 are plan views of the end portion of the sampling conveyor 10, and FIG. 9 is a block diagram showing the flow of signals to the control means 24.

In FIG. 1, a molded glass bottle B
Is sent from the molding line to the inspection machine 18 as shown by the arrow A, and the inspection is completed, and the bottle is sent to the sorting device by the impeller 20 having many blades 20a. The configurations of the inspection machine 18 and the impeller 20 are the same as those of the above-described conventional one. The judgment signal from the inspection machine is sent to a computer as the control means 24. The sorting device has a main passage 1, a defective product passage 2, and a sample product passage 3 separated by a guide 17 on a conveyor 16 for moving bottles. Both the defective product passage 2 and the sample product passage 3 branch off from the main passage 1.

In FIG. 2, near the branch point between the main passage 1 and the defective passage 2, defective defective means 4 (air nozzle) is provided.
However, a cullet chute 14 is provided at the end of the defective product passage 2. When a defective product flows through the main passage 1 and passes through the defective product elimination means 4, the defective product elimination means 4 blows out air in accordance with a command from the computer, and blows the defective product toward the defective product path 2. The blown-out defective product falls to the cullet chute 14 at the end of the defective product path 2. A defective product is detected by the defective product sensor 6 when passing through the entrance of the defective product passage 2, and the defective product sensor 6 sends a detection signal to the computer, and the computer confirms that the defective product has been reliably removed.

In FIG. 3, a sample product rejecting means 5 (air nozzle) is provided near a branch point between the main passage 1 and the sample product passage 3. When the sample product flows through the main passage 1 and passes through the sample product rejection means 5, the sample product rejection means 5 blows out air in response to a command from the computer, and blows the sample product toward the sample product passage 3. The sample product is detected by the sample product sensor 7 as it passes through the entrance of the sample product passage 3, and the sample product sensor 7 sends a detection signal to the computer, which confirms that the sample product has been reliably removed. The sample product removed from the main passage is transferred from the sample product passage 3 to the sampling conveyor 10 connected thereto.
Flows to As shown in FIG. 1, the sampling conveyor 1
0 is provided toward the inspection machine 18 where the worker is waiting. As shown in FIGS. 7 and 8, a switching means 11 and a cullet chute 15 are provided at the end of the sampling conveyor. The switching means 11 is operated by an air cylinder, and when collecting a sample product,
As shown in FIG. 7, the arm of the switching means 11 is in a retracted state, and the flowing sample product is stopped. When the sample product is discarded, as shown in FIG. 8, the arm of the switching means is in a protruding state, and the flowing sample product falls onto the cullet chute 15 one after another.

In FIG. 4, near the entrance of the conveyor 16, a timing sensor 12 for detecting a bottle B sent out from the impeller 20 onto the conveyor 16 is provided. Further, the conveyor 16 is provided with a speed sensor 13 for measuring the moving speed of the conveyor. In this case, the speed sensor 13 is an encoder that generates a pulse when the rotating shaft (not shown) of the conveyor 16 rotates by a predetermined angle. That is, each time the belt of the conveyor 16 moves a predetermined distance, the encoder generates a pulse. The two-stage belt shown at the top of FIG. 4 is the position (coordinate) in the main passage 1.
It corresponds to. The first square of these bands indicates the distance that the conveyor 16 moves at one pulse interval of the encoder. In this case, the main passage 1
This means that the distance (coordinate position) corresponding to the 150 pulse interval is expressed. The upper band represents the bottle position detection signal 21. , The lower band represents the determination signal 22 in the inspection machine. In the computer, for each of the position detection signal 21 and the determination signal 22, 150 memory areas are set corresponding to the number of squares.

First, the bottle position signal 21 will be described. Although the timing sensor 12 can be set at an arbitrary position, it is located at the position of the 30th cell in the drawing, and sends a signal indicating the presence or absence of a bottle to the computer every pulse of the encoder. When the timing sensor 12 detects a bottle, a signal indicating that there is a bottle, for example, “1” is input to the memory area corresponding to the 30th cell. The signal of "1" sequentially moves through the memory area at the 31st, 32nd, 33rd,... Every pulse of the encoder. In the bottle position signal 21 of FIG. 4, a cross-marked box indicates a “bottle present” signal (for example, “1”).
The blank cell is a signal of “no bottle” (for example, “0”). In this way, the computer always knows the position of the bottle in the main passage 1.

Next, the determination signal 22 will be described. Like the bottle position signal, the judgment signal from the inspection machine is also input to the memory area of the computer for each pulse of the encoder. For example, the signal of "good" is "0", the signal of "defective (not including sample)" is "1", and the signal of "sample" is "2". The stored signal sequentially moves through the memory area for each pulse of the encoder. The computer compares the determination signal 22 with the bottle position signal 21 to recognize whether the bottle is a non-defective product, a defective product, or a sample product. Activate this when it comes to the exclusion means 4, and activate it when the bottle comes to the exclusion means 4 if it is a sample product;
In the case of a good product, these rejecting means are not operated.

In parallel with the main passage 1, between the timing sensor 12 and the defective product elimination means 4, a molded product display 8 and a judgment signal display are provided in two stages. These indicators are, as shown in FIG. 6, a number of LEDs arranged side by side. The molded product display 8 has an LED that emits light corresponding to the position of the bottle on the main passage 1, and moves along with the movement of the bottle.
The light emission of the ED also moves. The molded article display 8 performs light emission display according to a computer command based on the bottle position signal 21 (FIG. 4). One LED is the bottle position signal 21
Corresponds to one square. The LED of the determination signal indicator 9 also emits light corresponding to the position of the bottle on the main passage 1, and the light emission of the LED also moves with the movement of the bottle. The bottle emits green when the bottle is good, orange when it is a sample, and red when it is defective. The determination signal display 9 performs light emission display in accordance with a computer command based on the determination signal 22 (FIG. 4). By looking at these indicators 8 and 9, it is possible to determine whether the bottle flowing on the main passage is a non-defective product, a defective product, or a sample product. Further, since the determination signal is displayed, the timing can be easily adjusted without using a separate device such as an oscilloscope.

FIG. 5 shows a case where the sample product rejection means 5 does not operate normally and the sample product cannot be rejected. In this case, since the sample product does not pass through the entrance of the sample product passage 3, this is detected by the sample product sensor 7, and the signal is sent to the computer. The computer activates the damming means 10 to dampen the bottle so that the sample does not flow downstream of the main passage 1. Similarly, when a defective product cannot be eliminated, the computer activates the damming means 10 based on a signal from the defective product sensor 6 to dam the bottle.

[0026]

According to the sorting device of the present invention, the sample product is eliminated only in one stage, so that the sample product can be sorted without fail. Since the check when the defective product is not eliminated is performed at the entrance of the defective product passage and the sample product passage, it is possible to reliably recognize the exclusion mistake and to dam the bottle in the main passage. In this way, the apparatus of the present invention can accurately perform sorting and exclusion errors,
The present invention can be applied to the speeding up of the sorting process accompanying the speeding up of the production line. In addition, timing is easily adjusted by also displaying the determination signal on the display, and the provision of the sampling conveyor has an effect that more sample products can be easily collected.

[Brief description of the drawings]

FIG. 1 is a plan view of an inspection machine 18 and a sorting device of an embodiment.

FIG. 2 is a plan view of the sorting device of the embodiment in a state where defective products are excluded.

FIG. 3 is a plan view of the sorting device according to the embodiment in a state where sample products are excluded.

FIG. 4 is a plan view of the sorting device of the embodiment, and an explanatory diagram of a molded article display 8 and a judgment signal display 9;

FIG. 5 is a plan view of the sorting device according to the embodiment when an exclusion error occurs.

6 is an explanatory diagram of a molded article display 8 and a judgment signal display 9. FIG.

FIG. 7 is a plan view of an end portion of the sampling conveyor 10. FIG.

FIG. 8 is a plan view of an end portion of the sampling conveyor 10.

FIG. 9 is a block diagram showing the flow of signals to the control means 24.

FIG. 10 is a plan view of an inspection machine 18 and a conventional sorting device.

FIG. 11 is a plan view of a conventional sorting device.

FIG. 12 is a plan view of a conventional sorting device and an explanatory diagram showing a relationship between a determination signal and a bottle position signal.

13 is an explanatory diagram of a display 45. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main passage 2 Defective product passage 3 Sample product passage 4 Defective product exclusion means 5 Sample product exclusion means 6 Defective product sensor 7 Sample product sensor 8 Molded product display 9 Judgment signal display 10 Sampling conveyor 11 Switching means 12 Timing sensor 13 Speed Sensor 14 Cullet chute 15 Cullet chute 16 Conveyor 17 Guide 18 Inspection machine 19 Inspection means 20 Impeller 21 Bottle position signal 22 Judgment signal 23 LED 24 Control means 25 Damming means 31 Main passage 32 Defective passage 33 Sample passage 34 Elimination of defective products Means 35 Elimination means 36 Switching means 37 Caret chute 38 Caret chute 39 Guide 40 Timing sensor 41 Non-defective sensor 42 Defective means 43 Defective sensor 44 Elimination sensor 45 Display 46 Conveyor 47 LED

Continued on the front page F term (reference) 3F079 AD12 CA19 CA42 CA44 CC03 CC04 DA02 DA11 EA12 EA15 EA19

Claims (4)

[Claims] 1. A main passage 1 for a molded product downstream of an inspection machine, a defective product passage 2 and a sample product passage 3 branched from the main passage 1, a conveyor 16 for moving the molded product in these passages, A defective product excluding means 4 for distributing non-defective products from the main passage 1 to the defective product passage 2, a sample product excluding means 5 for distributing a sample product from the main passage 1 to the sample product passage 3, and a downstream portion of both of these excluding devices 4, 5. Damming means 25 provided in the main passage 1, a defective product sensor provided near the entrance of the defective product passage 2, a sample product sensor provided near the entrance of the sample product passage 3, Control means 24 for operating the elimination means and the damming means based on the signal, and the control means 24 controls signals from the defective product sensor 6 and the sample product sensor 7 When it is confirmed that the defective product or sample product is not in each passage based on the
A device for sorting molded articles, wherein the damming means 25 is operated to dam the molded article. 2. The sorting device according to claim 1, wherein the sorting device includes a timing sensor 12 provided near an entrance of the conveyor 16 for detecting a bottle passing therethrough, and a speed sensor 13 for the conveyor 16. Wherein the control means 24 grasps the current position of each molded article on the main passage 1 based on the signals from the timing sensor 12 and the speed sensor 13. 3. The sorting apparatus according to claim 1, wherein a molded article indicator that emits an LED in parallel with the main passage in synchronism with the flow of the molded article, and a judgment signal from the inspection machine. And a determination signal indicator 9 for emitting LEDs that are tuned and arranged in parallel with each other. 4. A sorting apparatus according to claim 1, wherein a sampling conveyor 10 is connected to said sample product passage 3, and a switching means 11 for switching between collection and disposal is provided at an end thereof. Characteristic molded product sorting device