JPH025363Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a fixed length inspection device for inspecting whether a long product such as a brake hose is within a predetermined allowable size range.

Conventionally, this type of inspection equipment uses a phototube, but the equipment costs are high, the phototube becomes clogged and inspection becomes impossible, and since it is a non-contact method, it is difficult to inspect depending on the shape of the object to be inspected. There were problems such as detection errors that caused rejected products to be passed.

The object of this invention is to provide a fixed length inspection device for long products that can eliminate the above-mentioned problems.

The fixed-length inspection device for long products of this invention includes a mounting member that guides the object to be inspected in the axial direction and slidably places it thereon, and a mounting member that is disposed outside one end of the mounting member and placed on the mounting member. a pushing member that pushes the object to be inspected; a fixed position confirmation sensor that is disposed outside the other end of the placement member and issues an on signal upon contact with one end of the object pushed by the pushing member; It consists of a sizing confirmation sensor that issues an on signal when it comes into contact with a tongue piece attached to a member, and the length of the object to be inspected is determined depending on whether or not the sizing confirmation sensor generates an on signal when the fixed position confirmation sensor generates an on signal. The above object is achieved by a configuration that determines pass/fail with respect to the quality.

An embodiment of this invention will be described below with reference to FIGS. 1 to 3.

As shown in the figure, a mounting member 1, a pushing member 3 disposed outside one end of the mounting member 1, and a position confirmation sensor 5 disposed outside the other end of the mounting member 1. ,
It consists of a sizing confirmation sensor 7 disposed above the pushing member 3.

The mounting member 1 is formed to have a V-shaped cross section as shown in FIG. 2, and is used to guide an object 9 to be inspected, such as a brake hose, in the axial direction and to slidably place the object 9 thereon. In the push member 3, the push rod 11 is connected to the guide sleeve 1.
The piston rod 17 of the air cylinder 15 is connected to the piston rod 17 of the air cylinder 15 so as to be able to reciprocate. A tapered flexible annular tongue piece 19 is attached to the push rod 11. The fixed position confirmation sensor 5 has a sensor body 21
and a swinging plate 23 that contacts the detection section 21a of the sensor body against a spring force, and generates an on signal when the swinging plate 23 comes into contact with the detection section 21a. Note that this sensor body 21 and the rocking plate 2
3 is desirably adjustable and movable integrally in the axial direction, as this enables inspection of objects to be inspected with various set dimensions. The sizing confirmation sensor 7 consists of a sensor body 25 and a roller detection section 29 that protrudes downward from the sensor body and is connected to a plunger 27 so as to be able to adjust its vertical position. When the piece 19 makes contact, an on signal is generated. Further, the fixed position confirmation sensor 5 and the fixed size confirmation sensor are arranged so that the length of the object to be inspected can be judged as to whether or not the fixed size confirmation sensor 7 generates an on signal when the fixed position confirmation sensor 5 generates an on signal. 7 is input to the AND circuit, and when the inspected object is within the allowable size range, a pass (on) signal is generated.

Next, how the above embodiment is used will be explained.

First, an object to be inspected 9 such as a brake hose is placed on the mounting member 1 (FIG. 1). At this time, both ends of the object to be inspected 9 are not in contact with both the push rod 11 and the swing plate 23. Next, when the air cylinder 15 is activated to move the push rod 11 forward, the object 9 to be inspected is pushed by the push rod 11 and slides on the mounting member 1 while being guided in the axial direction, and the tip of the object 9 to be inspected is moved forward. The swing plate 23 is rotated against the spring force (FIG. 3). Then, the swing plate 23 comes into contact with the detection section 21a, and the fixed position confirmation sensor 5 issues an on signal. At this time,
The AND circuit determines whether the length of the object to be inspected is acceptable or not based on the presence or absence of an ON signal issued from the sizing confirmation sensor 7 in response to the presence or absence of contact between the annular tongue piece 19 and the roller detection section 29. Note that by moving the roller detection section 29 up and down, the contact distance with the annular tongue piece 19 changes, so the width of the allowable dimension range can be adjusted. Naturally, when the swing plate 23 contacts the detection part 21a and the annular tongue piece 19 contacts the lower end of the roller detection part 29 (the annular tongue piece 19 and the roller detection part 29 are in a straight line), the push rod 11 Tip and rocking plate 2
The distance l between the three front surfaces is the set dimension of the object to be inspected 9. After the determination is completed, the air cylinder 15 is operated again to move the push rod 11 backward, and the objects 9 to be inspected are taken out and separated into acceptable items and rejected items.

In the above embodiment, the drive means for the push rod 11 is not limited to a cylinder mechanism such as an air cylinder, but may also be a crank mechanism or the like. Further, when the allowable size range is wide, the annular tongue piece 19 may be straight instead of tapered. By making the annular tongue piece 19 adjustable and movable in the axial direction of the push rod 11, objects to be inspected with various set dimensions can be inspected without moving the fixed position confirmation sensor 5. However, the detection section of the sizing confirmation sensor is not limited to the above embodiment, and may be of a fixed type and a button type.

This invented fixed-length inspection device for long products has the above-mentioned configuration and function, so it has a simple structure and low equipment costs, and it also eliminates the risk of clogging and detection errors that occur when phototubes are used. do not have. That is,
In the device of this invention, the length of the object to be inspected is detected by directly contacting both ends of the object.
Unlike the non-contact type, detection errors due to changes in the intermediate cross-sectional shape (such as passing a failure) do not occur.

[Brief explanation of the drawing]

The diagrams show one embodiment of this invention. Figure 1 is a schematic diagram of the fixed length inspection device in the state immediately before inspection, Figure 2 is a cross-sectional view of Figure 1 with the line partially omitted, and Figure 3 is during inspection. It is a schematic front view of the fixed length inspection device in a state. 1... Placing member, 3... Pushing member, 5... Fixed position confirmation sensor, 7... Fixed size confirmation sensor, 9...
... object to be inspected, 11 ... push rod, 19 ... annular tongue piece, 23 ... rocking plate, 29 ... roller detection section.

Claims (1)

[Scope of utility model registration request] A fixed-length inspection device for inspecting whether a long product is within a predetermined allowable size range, comprising a mounting member that guides an object to be inspected in the axial direction and slidably places it; a pushing member disposed outwardly at one end of the mounting member to push the object to be inspected on the mounting member; and one end of the object to be inspected pushed by the pushing member disposed outwardly at the other end of the mounting member. It consists of a fixed position confirmation sensor that issues an on signal when it comes into contact with the button, and a fixed size confirmation sensor that issues an on signal when it comes into contact with the tongue piece attached to the pushing member. 1. A fixed-length inspection device for long products, characterized in that the length of an object to be inspected is determined to be acceptable or not based on the presence or absence of an ON signal from a length confirmation sensor.