JP2008058069A - Product size inspection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a product size inspection device at low cost for detecting only products each having an outer diameter size taken as a size coming up to the standard. <P>SOLUTION: A first product passage hole 6 is formed through a plate 5 with the passage hole 6 formed so as to have a size allowing only the products B to pass therethrough, the outer diameter size of the products B being equal to or smaller than a size coming up to the standard. A first lid member 7 is pushed away to an opening side as the products B are pushed by a push-in body 10 to the first lid member 7 side against biasing force of a fluid pressure cylinder C1, with the products B having got into the passage hole 6 from the front-side surface 5G side of the plate 5. A sensor S1 is provided for detecting whether or not the expansion/contraction amount of the pressure cylinder C1 has run up to a set value. A control means 9 is provided which throws open the lid member 7 by controlling the pressure cylinder C1 based on a detection result when the sensor S1 detects that the expansion/contraction amount of the pressure cylinder C1 has run up to the set value. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a product dimension inspection apparatus for inspecting whether or not an outer diameter dimension of a product is an acceptable dimension.

  For example, an anti-vibration bushing as a product composed of an inner cylinder, an outer cylinder, and a rubber-like elastic body that connects the inner and outer cylinders is squeezed after vulcanization molding to improve the durability of the rubber-like elastic body. Processed. In order to check whether or not the vibration isolating bushes are not drawn, other sizes of anti-vibration bushings (so-called anti-vibration bushings of other product numbers) are mixed in the group of anti-vibration bushings. In order to know whether or not there is, the anti-vibration bush is inspected by the product dimension inspection apparatus described at the beginning.

  2. Description of the Related Art Conventionally, in a product dimension inspection apparatus, a first product passage hole through which a product passes in the radial direction of the product is formed on a plate supported by an apparatus frame. It was formed in such a size that only a product having a size smaller than the dimension to be passed could pass.

  According to the above-mentioned conventional configuration, although products having an outer diameter dimension exceeding the acceptable dimension can be detected, products having an outer diameter dimension smaller than the acceptable dimension are distinguished from acceptable products. I couldn't. A means for detecting by an image sensor is conceivable, but this means is expensive.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an inexpensive product dimension inspection apparatus capable of detecting only a product having an outer diameter dimension acceptable.

The feature of the first invention is
A product dimension inspection device for inspecting whether or not the outer diameter dimension of a product is a passing dimension,
A first product passage hole through which the product passes in the radial direction of the product is formed on a plate supported by the apparatus frame, and the first product passage hole is only a product having an outer diameter dimension equal to or less than a dimension that is acceptable. A first lid member that opens and closes the first product passage hole from the back side of the plate, and a fluid pressure cylinder that energizes and closes the first lid member are provided.
As the product that has entered the first product passage hole from the front surface side of the plate is pushed into the first lid member side by the pushing body against the urging force of the fluid pressure cylinder, the first 1 lid is configured to be pushed away to the open side,
When a product having an outer diameter dimension acceptable is pushed into the first lid member by the pusher and the push surface of the pusher overlaps the surface on the front side of the plate, the fluid pressure cylinder The amount of expansion / contraction of
A sensor is provided for detecting whether or not the amount of expansion / contraction of the fluid pressure cylinder reaches the set value when the pushing surface of the pushing body overlaps the surface on the front side of the plate, and the amount of expansion / contraction of the fluid pressure cylinder When the sensor detects that has reached the set value, there is provided control means for controlling the fluid pressure cylinder based on the detection result to open the first lid member.

With this configuration, the dimensions of the product can be inspected as follows.
(1) Products with dimensions that allow the outer diameter to pass (accepted products).
The product that passes through the first product passage hole of the plate and is received by the first lid member from the surface side of the plate is pushed into the first lid member side by the pushing body against the urging force of the fluid pressure cylinder. . Accordingly, the first lid member is pushed away to the open side, and the fluid pressure cylinder is extended or shortened. When the pushing surface of the pushing body overlaps the surface on the front side of the plate, the expansion / contraction amount of the fluid pressure cylinder becomes the set value, and this is detected by the sensor. Based on the detection result, the control device controls the fluid pressure cylinder to open the first lid member. Thereby, a product can be collected as an acceptable product.
(2) Products whose outer diameter exceeds the acceptable dimensions (non-acceptable products)
Since the product does not pass through the first product passage hole of the plate, this product can be recovered as a rejected product.
(3) Products whose outer diameter is smaller than the acceptable size (failed product)
The product passed through the first product passage hole of the plate and received by the first lid member is pushed into the first lid member side by the pushing body against the urging force of the fluid pressure cylinder. Accordingly, the first lid member is pushed away to the open side, and the fluid pressure cylinder is extended or shortened. And the pushing surface of a 2nd cover member overlaps with the surface of the front side of a plate. The amount of expansion and contraction of the fluid pressure cylinder corresponds to the diameter of the product, that is, the amount of displacement of the first lid member, and the amount of expansion and contraction of the fluid pressure cylinder when the pushing surface of the second lid member overlaps the front surface of the plate Is different from the expansion / contraction amount in the case of (1) above, the expansion / contraction amount of the fluid pressure cylinder does not become the set value. Therefore, the sensor detects that the expansion / contraction amount of the fluid pressure cylinder does not reach the set value, and the control means does not open the first lid member, so that the product received by the first lid member is unacceptable. It can be collected as an acceptable product.
Since the dimensions of the product are inspected as described above, the manufacturing cost can be reduced as compared with the case of inspecting with the image sensor.

In the first invention,
If the push-in body is a second lid member that opens and closes the first product passage hole from the front side of the plate, the following action can be achieved.

  It is possible to accurately grasp that the pushing surface of the pushing body overlaps the surface on the front side of the plate.

The feature of the second invention is:
A product dimension inspection device for inspecting whether or not the outer diameter dimension of a product is a passing dimension,
A first product passage hole through which the product passes in the radial direction of the product is formed on a plate supported by the apparatus frame, and the first product passage hole is only a product having an outer diameter dimension equal to or less than a dimension that is acceptable. Is formed in a size that allows the
A gauge member having a second product passage hole for allowing the product to pass in the radial direction of the product is provided so as to be switchable between a state facing the plate and a state not facing the plate from the back side of the plate. Is configured such that the second product passage hole overlaps the first product passage hole with the plate facing the plate,
A fluid pressure cylinder for biasing the gauge member to face the plate is provided;
The second product passage hole is formed to have a size that allows only a product having an outer diameter dimension smaller than a dimension to be accepted to pass,
The product that enters the first product passage hole from the front surface side of the plate and is blocked by the second product passage hole against the urging force of the fluid pressure cylinder. The gauge member is configured to be pushed away as it is pushed into the gauge member side,
A sensor is provided for detecting that the gauge member is in a first state where the gauge member is pushed away. When the sensor detects that the gauge is in the first state, the fluid pressure cylinder is controlled based on the detection result. Control means for switching the gauge member to a state not facing the plate is provided,
The shooter that guides the product passing through the second product passage hole to the rejected product collection unit is provided so as to be switched between a guide operation state and a guide non-operation state, and is in the first state. When the sensor detects, based on the detection result, the control means controls the shooter switching drive mechanism to switch the shooter to the non-guided state, and then the gauge member does not face the plate It is in the point which is comprised so that it may switch to.

With the above configuration, the dimensions of the product can be inspected as follows.
(1) Products whose outer diameter dimensions are acceptable (accepted products)
The product enters the first product passage hole from the front surface side of the plate and is blocked by the second product passage hole. When this product is pushed toward the gauge member against the urging force of the fluid pressure cylinder, the gauge member is pushed away accordingly. When the sensor detects that the gauge member is in the first state where it is pushed away, the control means controls the shooter switching drive mechanism to switch the shooter to the non-guided state, after which the control means The fluid pressure cylinder is controlled so that the gauge member does not face the plate. As a result, the product can be collected as an acceptable product.
(2) Products whose outer diameter exceeds the acceptable dimensions (non-acceptable products)
Since the product does not pass through the first product passage hole of the plate, the product can be collected as a rejected product.
(3) Products whose outer diameter is smaller than the acceptable size (failed product)
The product passes through the first product passage hole of the plate, passes through the second product passage hole, falls to the shooter side in the guiding action state, and is collected by the rejected product collection unit.
Since the dimensions of the product are inspected as described above, the manufacturing cost can be reduced as compared with the case of inspecting with the image sensor.

  ADVANTAGE OF THE INVENTION According to this invention, the product dimension inspection apparatus which can detect only the product which is a dimension by which an outer diameter dimension is set as the pass was able to be provided cheaply.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 and FIG. 2 show a product dimension inspection apparatus 100 that inspects whether or not the outer diameter dimension of the vibration-proof bushing B as a product is an acceptable dimension. As shown in FIG. 4, the anti-vibration bush B comprises an inner cylinder 1, an outer cylinder 2 that is thinner and shorter than this, and a rubber-like elastic body 3 that connects the inner and outer cylinders 1 and 2, and is an automobile suspension device. Used for. In the present embodiment, the product dimension inspection apparatus 100 inspects the outer diameter (maximum diameter) of the outer cylinder 2, but both the outer diameter of the outer cylinder 2 and the outer diameter of the inner cylinder 1 may be inspected.

  The product dimensional inspection apparatus 100 forms a first product passage hole 6 through which the vibration isolating bush B passes in the radial direction K in the upper plate 5 supported by the frame-shaped apparatus frame 4, and thereby the first product. A plate-like first lid member 7 for opening and closing the passage hole 6 from the back side (lower side) of the plate 5 and a first air cylinder C1 (corresponding to a fluid pressure cylinder) for closing and energizing the first lid member 7 are provided. Configured. Reference numeral 15 denotes a top plate of the apparatus frame 4, and the plate 5 is mounted and fixed on the top plate 15. The top plate 15 is formed with a product passage auxiliary hole 36 larger than the first product passage hole 6. 5 U is a surface on the back side of the plate 5.

  As shown also in FIG. 3, the first product passage hole 6 allows only the vibration-isolating bush B having an outer diameter dimension equal to or smaller than the acceptable dimension to pass. That is, the anti-vibration bush B having an outer diameter dimension equal to or smaller than the acceptable size is allowed to pass from the upper side to the lower side, and the passage of the anti-vibration bush B having an outer diameter dimension exceeding the acceptable dimension is prevented. It is formed in the size to be. Reference numeral 19 in FIG. 3 denotes a chamfered portion formed on the entire circumference of the first product passage hole 6.

  The first lid member 7 is supported by a pair of left and right support members 37 provided on the lower surface of the top plate 15 through a support shaft 38 so as to be swingable around the first horizontal axis O1. Then, the shaft member 8 extends downward from the extending end portion of the support shaft 38 extended in the lateral direction, and the lower end portion of the shaft member 8 is connected to the tip end portion of the piston rod 16 of the first air cylinder C1 in the fourth lateral direction. It is rotatably connected around the axis O4. The first lid member 7, the support shaft 38, and the shaft member 8 are integrally fixed so as not to be relatively displaceable, and the shaft member 8 is positioned at right angles to the first lid member 7 in a side view (see FIG. 1). . The base end portion of the cylinder tube 14 of the first air cylinder C1 is connected to the support base 17 so as to be swingable around the third horizontal axis O3. In addition, a second lid member 10 (corresponding to a push-in body) that opens and closes the first product passage hole 6 from the front side of the plate 5 has a pair of left and right rising portions 18 provided on the top plate 15 around the second horizontal axis O2. Is swingably supported.

  As shown in FIGS. 5 and 6, the anti-vibration bush B that has entered the first product passage hole 6 from the front surface 5 </ b> G side of the plate 5 resists the urging force of the first air cylinder C <b> 1. As the first cover member 7 is pushed toward the first lid member 7 side by 10, the first lid member 7 is pushed away to the open side. Further, the anti-vibration bush B whose outer diameter is acceptable is pushed into the first lid member 7 side by the second lid member 10, and the pushing surface 10U which is the back side surface of the second lid member 10 is the plate. When the first air cylinder C1 overlaps with the front surface 5G of FIG. 5, the extension amount of the first air cylinder C1 (the extension amount from the state before the first lid member 7 is pushed away to the open side) becomes the set value. . Although the operator performs the operation of inserting the vibration isolating bush B into the first product passage hole 6 and the operation of pushing the vibration isolating bush B through the second lid member 10, the robot may perform the operation. Good.

  Then, when the pushing surface 10U of the second lid member 10 overlaps the front surface 5G of the plate 5, the first sensor S1 that detects whether or not the extension amount of the first air cylinder C1 has reached the set value. When the first sensor S1 detects that the extension amount of the first air cylinder C1 has reached the set value, the first lid member 7 is controlled to extend the first air cylinder C1 based on the detection result. When the first sensor S1 detects that the set value is not reached, the control device keeps the first lid member 7 as it is without controlling the extension of the first air cylinder C1. 9 (corresponding to the control means) is provided. The fact that the pushing surface 10U of the second lid member 10 overlaps the front surface 5G of the plate 5 is detected by a detection means (not shown) provided between the pushing surface 10U and the front surface 5G of the plate 5.

With the above configuration, the dimensions of the vibration isolating bush B are inspected as follows.
(1) Anti-vibration bushing B (accepted product) whose outer diameter is acceptable
The anti-vibration bush B passes through the first product passage hole 6 of the plate 5 from the front surface 5G side of the plate 5 and is received by the first lid member 7. As the anti-vibration bush B is pushed toward the first lid member 7 by the second lid member 10 against the biasing force of the first air cylinder C1, the first lid member 7 is pushed away to the open side, The first air cylinder C1 extends. When the pushing surface 10U of the second lid member 10 overlaps the surface 5G on the front side of the plate 5 (see FIGS. 5 and 6), the extension amount of the first air cylinder C1 has reached the set value. The first sensor S1 detects it. Based on the detection result, the control device 9 controls the extension of the first air cylinder C1 to open the first lid member 7 (see FIG. 7). Thereby, the anti-vibration bush B is collected as an acceptable product.
(2) Anti-vibration bush B whose outer diameter exceeds the acceptable size (non-acceptable product)
Since the anti-vibration bush B does not pass through the first product passage hole 6 of the plate 5, the anti-vibration bush B is collected as a rejected product.
(3) Anti-vibration bush B whose outer diameter is smaller than the acceptable size (non-acceptable product)
The anti-vibration bush B passes through the first product passage hole 6 of the plate 5 and is received by the first lid member 7. As the anti-vibration bush B is pushed toward the first lid member 7 by the second lid member 10 against the biasing force of the first air cylinder C1, the first lid member 7 is pushed away to the open side, The first air cylinder C1 extends. Then, the pushing surface 10U of the second lid member 10 overlaps the front surface 5G of the plate 5 (see FIGS. 5 and 6). The extension amount of the first air cylinder C1 corresponds to the diameter of the anti-vibration bush B, that is, the displacement amount of the first lid member 7, and the pushing surface 10U of the second lid member 10 is brought into contact with the surface 5G on the front side of the plate 5. Since the extension amount of the first air cylinder C1 when overlapped is smaller than the extension amount in the case of (1), the extension amount of the first air cylinder C1 does not become the set value. Accordingly, the first sensor S1 detects that the amount of expansion of the first air cylinder C1 is not the set value, and the control device 9 does not control the expansion of the first air cylinder C1 and controls the first lid member 7. Is maintained as it is. Thereby, an operator can open the 2nd cover member 10, and can collect vibration proof bush B as a rejected product.

[Second Embodiment]
8 to 10 show a product dimension inspection apparatus 100 according to the second embodiment. The product dimension inspection apparatus 100 is not provided with the second lid member 10 or the first sensor S1. 8 to 10, the first air cylinder C1 is illustrated in a simplified manner. Hereinafter, differences from the product dimension inspection apparatus 100 of the first embodiment will be described.

  A plate-like gauge member 47 having a second product passage hole 40 through which the vibration isolating bush B passes in the radial direction K is provided to be switchable between a state facing the plate 5 and a state facing the plate 5 from the back side of the plate 5. Thus, the second product passage hole 40 is configured to overlap the first product passage hole 6 with a gap in the vertical direction with the gauge member 47 facing the plate 5. A first air cylinder C <b> 1 is provided as a fluid pressure cylinder that urges the gauge member 47 to face the plate 5.

  The gauge member 47 corresponds to the first lid member 7 in the first embodiment. The gauge member 47 and the surrounding structure are substantially the same as the first lid member 7 and the surrounding structure. That is, the gauge member 47 is supported by a pair of left and right support members 37 provided on the lower surface of the top plate 15 via a support shaft 38 so as to be swingable around the first horizontal axis O1 (FIGS. 1 and 2). 2). Then, the shaft member 8 extends downward from the extending end portion of the support shaft 38 extended in the lateral direction, and the lower end portion of the shaft member 8 is connected to the tip end portion of the piston rod 16 of the first air cylinder C1 in the fourth lateral direction. It is rotatably connected around the axis O4. The gauge member 47, the support shaft 38, and the shaft member 8 are fixed integrally so as not to be relatively displaceable, and the shaft member 8 is positioned at a right angle to the gauge member 47 in a side view.

  The second product passage hole 40 allows only the anti-vibration bush B having a smaller outer diameter dimension to be acceptable. That is, it is formed in a size that prevents passage of the vibration isolating bush B whose outer diameter dimension is acceptable and allows the vibration isolating bush B whose outer diameter dimension is smaller than the acceptable dimension. Has been. The second product passage hole 40 has the same shape as the first product passage hole 6 and is slightly smaller in size than the first product passage hole 6.

  The anti-vibration bush B that enters the first product passage hole 6 from the front surface 5G side of the plate 5 and is blocked by the second product passage hole 40 is the first air cylinder C1. The gauge member 47 is configured to be pushed downward as the gauge member 47 is pushed against the biasing force. Further, a second sensor S2 is provided for detecting that the gauge member 47 is in a first state where the gauge member 47 has been pushed down. When the second sensor S2 detects that the gauge member 47 has entered the first state, Based on this, a control device 9 (corresponding to control means) is provided for controlling the first air cylinder C1 to switch the gauge member 47 to a state where it does not face the plate 5 (a state where it swings downward around the first horizontal axis O1). It has been. The second sensor S2 is a position sensor that detects the position of the first lid member 7 (the position in the lowered state).

  The shooter 42 that guides the anti-vibration bush B passing through the second product passage hole 40 to the rejected product collection unit 41 is guided and inoperative by the second air cylinder C2 (corresponding to a switching drive mechanism). When the second sensor S2 detects that the first state has been reached, the control device 9 controls the second air cylinder C2 to be shortened based on the detection result, and the shooter 42 is switched to the guide non-operation state, and then the gauge member 47 is switched to a state not facing the plate 5.

With the above configuration, the dimensions of the vibration-proof bush B can be inspected as follows.
(1) Anti-vibration bushing B (accepted product) whose outer diameter is acceptable
The anti-vibration bush B enters the first product passage hole 6 from the front surface 5G side of the plate 5 and is prevented from passing through the second product passage hole 40 (see FIG. 9). As the vibration isolating bush B is pushed toward the gauge member 47 against the biasing force of the first air cylinder C1, the gauge member 47 is pushed down. When the second sensor S2 detects that the gauge member 47 is in the first state in which the gauge member 47 is pushed downward, the control device 9 controls the second air cylinder C2 to bring the shooter 42 into the non-guided state. Switch. Thereafter, the control device 9 controls the first air cylinder C1 to switch the gauge member 47 to a state not facing the plate 5 (see FIG. 10). Thereby, the anti-vibration bush B is collected as an acceptable product.
(2) Anti-vibration bush B whose outer diameter exceeds the acceptable size (non-acceptable product)
Since the anti-vibration bush B does not pass through the first product passage hole 6 of the plate 5, the anti-vibration bush B is collected as a rejected product.
(3) Anti-vibration bush B whose outer diameter is smaller than the acceptable size (non-acceptable product)
The anti-vibration bush B passes through the first product passage hole 6 of the plate 5, passes through the second product passage hole 40, falls to the shooter 42 side in the guiding action state, and is collected by the rejected product collection unit 41 ( (See FIG. 8).

[Another embodiment of the first embodiment and the second embodiment]
(1) The first air cylinder C1 may be shortened as the first lid member 7 is pushed away to the open side by the vibration isolating bush B, and the gauge member 47 is pushed away by the vibration isolating bush B. The first air cylinder C1 may be configured to be shortened as the time is increased.
(2) The product 100 may be an article other than the anti-vibration bush B.

Partial cutaway side view of product dimensional inspection equipment Partial cutaway front view of product dimension inspection equipment Plan view of plate Cross section of product (anti-vibration bush) Side view showing operation of product dimensional inspection device Front view showing the operation of the product size inspection device Side view showing operation of product dimensional inspection device Partially cutaway side view of the product dimension inspection apparatus of the second embodiment Side view showing the operation of the product size inspection apparatus of the second embodiment Side view showing the operation of the product size inspection apparatus of the second embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inner cylinder 2 Outer cylinder 3 Rubber-like elastic body 4 Apparatus frame 5 Plate 5G The surface 5U of the plate 5U The surface 6P of the back of the plate 6 The 1st product passage hole 7 The 1st cover member 8 The shaft member 9 Control means (control apparatus)
DESCRIPTION OF SYMBOLS 10 2nd cover member 10U Pushing surface 15 Top plate 16 Piston rod 17 Support stand 18 Standing part 19 Chamfering part 36 Product passage auxiliary hole 37 Support member 38 Support shaft 40 Second product passage hole 41 Unacceptable article collection part 42 Shooter 47 Gauge Member C2 switching drive mechanism (second air cylinder)
B product (anti-vibration bush)
C1 Air cylinder (first air cylinder, fluid pressure cylinder)
K radial direction O1 first horizontal axis O2 second horizontal axis O3 third horizontal axis O4 fourth horizontal axis S1 sensor (first sensor)
S2 sensor (second sensor)
100 Product dimensional inspection equipment

Claims (3)

A product dimension inspection device for inspecting whether or not the outer diameter dimension of a product is a passing dimension,
A first product passage hole through which the product passes in the radial direction of the product is formed on a plate supported by the apparatus frame, and the first product passage hole is only a product having an outer diameter dimension equal to or less than a dimension that is acceptable. A first lid member that opens and closes the first product passage hole from the back side of the plate, and a fluid pressure cylinder that energizes and closes the first lid member are provided.
As the product that has entered the first product passage hole from the front surface side of the plate is pushed into the first lid member side by the pushing body against the urging force of the fluid pressure cylinder, the first 1 lid is configured to be pushed away to the open side,
When a product having an outer diameter dimension acceptable is pushed into the first lid member by the pusher and the push surface of the pusher overlaps the surface on the front side of the plate, the fluid pressure cylinder The amount of expansion / contraction of
A sensor is provided for detecting whether or not the amount of expansion / contraction of the fluid pressure cylinder reaches the set value when the pushing surface of the pushing body overlaps the surface on the front side of the plate, and the amount of expansion / contraction of the fluid pressure cylinder When the sensor detects that has reached the set value, a product size inspection apparatus is provided that has a control means for controlling the fluid pressure cylinder based on the detection result to open the first lid member.   The product size inspection device according to claim 1, wherein the pusher is a second lid member that opens and closes the first product passage hole from the front side of the plate. A product dimension inspection device for inspecting whether or not the outer diameter dimension of a product is a passing dimension,
A first product passage hole through which the product passes in the radial direction of the product is formed on a plate supported by the apparatus frame, and the first product passage hole is only a product having an outer diameter dimension equal to or less than a dimension that is acceptable. Is formed in a size that allows the
A gauge member having a second product passage hole for allowing the product to pass in the radial direction of the product is provided so as to be switchable between a state facing the plate and a state not facing the plate from the back side of the plate. Is configured such that the second product passage hole overlaps the first product passage hole with the plate facing the plate,
A fluid pressure cylinder for biasing the gauge member to face the plate is provided;
The second product passage hole is formed to have a size that allows only a product having an outer diameter dimension smaller than a dimension to be accepted to pass,
The product that enters the first product passage hole from the front surface side of the plate and is blocked by the second product passage hole against the urging force of the fluid pressure cylinder. The gauge member is configured to be pushed away as it is pushed into the gauge member side,
A sensor is provided for detecting that the gauge member is in a first state where the gauge member is pushed away. When the sensor detects that the gauge is in the first state, the fluid pressure cylinder is controlled based on the detection result. Control means for switching the gauge member to a state not facing the plate is provided,
The shooter that guides the product passing through the second product passage hole to the rejected product collection unit is provided so as to be switched between a guide operation state and a guide non-operation state, and is in the first state. When the sensor detects, based on the detection result, the control means controls the shooter switching drive mechanism to switch the shooter to the non-guided state, and then the gauge member does not face the plate Product size inspection device configured to switch to.

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