JPH0744962Y2 - Workpiece model detection device - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention (1) Field of Industrial Use The present invention is a model of a work, such as a connecting rod of an internal combustion engine, having a similar shape and slightly different dimensions for each model. The present invention relates to a device for discriminating between the two based on the dimensional difference.

(2) Conventional technology Conventionally, in order to determine the model of a work having a similar shape and slightly different dimensions for each model, the workpiece is precisely clamped to a reference seat and then the dimensions of each part of the work are measured. I was going.

(3) Problems to be Solved by the Invention However, in the above-described conventional model detecting device, it is necessary to sequentially perform the work of clamping the work on the reference seat and the work of measuring the size of the fixed work, which requires a lot of time. In addition to the above, the clamp device and the measuring device are separately required, so that the size of the entire device is increased.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to reduce the size of the device and shorten the measurement time by making the clamp device of the model detection device and the measurement device common.

B. Configuration of Device (1) Means for Solving the Problem In order to achieve the above object, the present invention detects the model of the work by measuring the width and thickness of the work placed on the reference seat. A device for detecting the type of a work, wherein a push rod that presses the side surface of the work to abut against the reference seat and a pair of clamp arms provided with a measuring element that clamps the side surface of the work are opened and closed. A clamp rod, and a measurement rod which is arranged coaxially with the clamp rod so as to come into contact with an end portion of the clamp rod so as to be movable back and forth, and integrally has a detection rod of a measuring device main body for detecting the width of the work; A detection arm of the measuring device body for detecting the thickness of the work is provided with a clamp arm provided with a tracing stylus that abuts on the upper surface of the work and clamps the work with the reference seat. And a measuring rod integrally provided.

(2) Operation According to the above-mentioned characteristics, the side surface of the work placed on the reference seat is temporarily fixed by being pressed by the pressing rod, and then the clamp rod is driven to measure the side surface of the work with the probe of the pair of clamp arms. When the measuring rod is moved to a position where it comes into contact with the clamp rod at the end while being clamped, the detection rod of the measuring device body moves integrally with the measuring rod to detect the width of the work. Further, when the measuring rod provided with the clamp arm provided with the measuring element is lowered and the workpiece is clamped between the measuring element and the reference seat, the detection rod of the measuring device body is lowered together with the measuring rod and the workpiece is lowered. To detect the thickness of. By measuring the width and thickness of the work in this way, the model of the work is detected.

(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of the present invention.
Figure is the whole side view of the model detection device, and Figure 2 is that of Figure 1.
II-II sectional view, FIG. 3 is a view in the direction of arrow III in FIG. 2, and FIG.
The figure is a view in the direction of the arrow IV in FIG.

The work W measured by the model detecting device according to the present embodiment is an arc-shaped cap that constitutes a part of the large end of the split type connecting rod, and its width w (see FIG. 2) and thickness t (see FIG. 2). The model is detected by measuring (see Fig. 1).

As shown in FIGS. 1 and 2, two guide rails 2 laid on the first base 1 support a movable base 4 which is reciprocally driven by a drive source (not shown) via a slider 3. In addition, a pair of left and right reference seats 6l and 6r, which are L-shaped in a side view, are provided on the upper end of the substrate 5 standing upright on the upper surface of the substrate 5, four sets in total. Each of the reference seats 6l, 6r is provided with a horizontal reference surface 7 and a vertical reference surface 8, and the model detection is performed with the reference surface 7 and 8 placed so that the lower surface and the side surface of the work W are in contact with each other. Be seen.

Left and right block members 11 and 11r are fixed to the upper portion of the substrate 10 provided on the front surface of the second base 9 located near the first base 1, and the left and right block members 11 and 11r are fixed to the block members 11 and 11r. Two pressing rods 12l, 12r which slidably support the workpiece W placed on the reference seats 6l, 6r to press the workpiece W against the vertical reference surface 8 for temporary fixing. There is. Both end portions of a drive plate 14 which is reciprocally driven by a cylinder 13 are slidably fitted to both the pressing rods 12l and 12r, and between the drive plate 14 and the step portion 15 of the pressing rods 12l and 12r. Springs 16l and 16r are installed. Therefore, cylinder 1
When 3 is extended and the drive plate 14 is moved forward, the left and right pressing rods 12l, 12r move forward via the compressed springs 16l, 16r to press the work W against the vertical reference plane 8 of the reference seats 6l, 6r. Temporary fixing is performed.

As is apparent from FIG. 3 as well, the left and right reference rods 6l, 6r provided on the base plate 5 of the movable table 4 are slidably supported by the left and right clamp rods 17l, 17r, respectively. Clamp arm swinging members 18l, 18r are fixed to the tips thereof. The clamp arm swinging members 18l, 18r are maintained in a vertical posture by engaging the grooves 19 formed at the lower ends thereof with the pins 20l, 20r implanted in the substrate 5. Both ends of a drive plate 23, which is reciprocally driven by a cylinder 22 provided on the substrate 5, are slidably fitted to the front rods 21, 21r coaxially connected to the tips of the clamp rods 17l, 17r, This drive plate 23 and the front rod 21
, 21r spring seats 24l, 24r between the springs 25l, 25r
Is installed. L-shaped clamp arms 28l, 28r are pivotally supported on brackets 26l, 26r on both sides of each reference seat 6l, 6r via pins 27l, 27r. The tip end 29 of each clamp arm 28l, 28r is the clamp arm swing member 1
A probe that engages with the groove 30 formed at the upper end of 8l, 18r and can clamp both end faces of the work W at the other end.
31,31r are provided. Therefore, when the cylinder 22 is extended and the drive plates 23 compress the springs 25l and 25r,
The clamp arm swinging members 18l, 18r move forward together with the front rods 21, 21r and the clamp rods 17l, 17r to drive the pair of clamp arms 28l, 28r in the closing direction, and the contact point 31
, 31r contact both side surfaces of the work W.

On the other hand, the block member 11 provided on the substrate 10 of the second base 9
The measuring rods 32l, 32r located below the pressing rods 12l, 12r are slidably supported by 11 and 11r. Both measuring rods 32l, 32r are slidably fitted to both ends of a drive plate 34 which is reciprocally driven by a cylinder 33, and a spring is provided between the drive plate 34 and the step 35 of the measuring rods 32l, 32r. 36l and 36r are installed. Therefore, the cylinder 33
When the drive plate 34 is extended by extending the left and right measuring rods 32l, 32r via the compressed springs 36l, 36r, the tip 37 of the measuring rods 32l, 32r moves to the rear end 38 of the clamp rods 17l, 17r. Stop at the abutting position. The detection rods 40l and 40r extending forward from the lower ends of the brackets 39l and 39r fixed to the drive plate 34 slidably penetrate the measuring device main bodies 41 and 41r, and the width w of the work W is detected by the position in the front-rear direction. It

As is apparent from FIG. 4 together, the second base 9
A drive rod 43 driven by a cylinder 42 is supported on the base plate 10 via a bracket 44 so as to be vertically movable. On the left and right sides of this drive rod 43, a pair of upper and lower brackets 45
A pair of left and right measuring rods 46l and 46r are supported rotatably and rotatably via l and 45r. The drive rod 4
Both ends of the drive plate 47 fixed to the lower end of 3 are loosely fitted to the lower ends of the left and right measurement rods 46l and 46r, and between the drive plate 47 and the spring seats 48 provided at the lower ends of the measurement rods 46l and 46r. Spring 4
9l and 49r are installed. A guide groove 50 is formed in the middle of the measuring rods 46l, 46r, and guide rollers 52l, 52r axially supported by brackets 51, 51r provided on the substrate 10 are engaged with the guide groove 50. And both measuring rods 46l,
The tips of the clamp arms 53l, 53r provided at the upper end of the 46r are provided with measuring elements 54l, 54r capable of contacting the upper surface of the work W. Corresponding to the measuring rods 46l, 46r, the detecting rods 55l, 55r that move up and down integrally with the measuring rods 46l, 46r penetrate the detecting device bodies 56l, 56r up and down, and depending on the vertical position of the workpiece W, The thickness t is detected (see FIG. 2).

Next, the operation of the embodiment of the present invention having the above configuration will be described.

When a total of four workpieces W are placed on the reference seats 6l and 6r provided on the right side and the left side by a conveying device (not shown), the workpieces W are first placed on the right reference seats 6l and 6r. The model of the work W is detected.

First, the cylinder 13 extends and the left and right pressing rods 12l and 12r are moved forward through the springs 16l and 16r, and the tip ends thereof are brought into contact with the side surfaces of the work W so that the work W is vertically referenced to the reference seats 6l and 6r. It is pressed against the surface 8 and temporarily fixed. Then the cylinder
22 extends and the front rod 21 passes through the springs 25l and 25r.
, 21r, the clamp rods 17l, 17r, and the clamp arm swinging members 18l, 18r are integrally advanced, the pair of left and right clamp arms 28l, 28r are closed and the contact points 31, 31r provided at the tips of the work pieces W are Clamp the sides of the. Subsequently, when the cylinder 33 is extended and the measuring rods 32r and 32r are advanced via the springs 36l and 36r, the measuring rods 32l and 3r are moved.
The 2r advances to a position where its tip portion 37 abuts on the rear end portion 38 of the clamp rods 17l, 17r and stops. At this time,
The stop positions of the measuring rods 32l and 32r are determined by the width w of the work W. That is, when the width w of the work W is large, the tracing stylus 31, 31r comes into contact with the work W quickly, and as a result, the forward distance of the clamp rods 17l, 17r and the measurement rods 32l, 32r to the right in FIG. On the contrary, when the width w of the work W is small, the measuring elements 31 and 31r move largely until they come into contact with the work W, and as a result, the clamp rods 17l and 17r and the measuring rod 3
The forward distance of 2l, 32r becomes large.

When the left and right measuring rods 32r, 32r move forward according to the width w of the work W, the detecting rods 40l, 40r that move forward integrally with the measuring rods 32l, 32r slide inside the measuring device main bodies 41, 41r. The width w of the work W is detected based on the moving distance.

Next, when the cylinder 42 extends to lower the left and right measuring rods 46l, 46r via the springs 49l, 49r, the guide rollers 50 engaging with the guide grooves 50 of the measuring rods 46l, 46r.
The measuring rods 46l and 46r descend while rotating by the action of l and 50r. As a result, the measuring elements 54l, 54r provided on the clamp arms 53l, 53r at the upper ends of the measuring rods 46l, 46r come into contact with the upper surface of the work W to bring the work W into the horizontal reference plane 7 of the reference seats 6l, 6r.
Clamp between and. At this time, the detection rods 55l, 55r
(See FIG. 2) descends integrally with the measuring rods 46l, 46r and slides inside the measuring device main bodies 56l, 56r, and the thickness t of the work W is detected based on the moving distance. If the width w and the thickness t of the workpiece W thus detected are different from the reference values, it is determined that workpieces W of different models are erroneously mixed in, and an alarm is issued by means such as a buzzer.

When the model detection of the work W placed on the pair of right reference seats 6l, 6r is completed as described above, the cylinders 13, 22, 33, 42 are
Contracts and returns to the initial position, then the movable table 4 moves to the right in FIG. 2 by a drive source (not shown), and this time the work W placed on the pair of left reference seats 6l, 6r. The model detection of is performed by the same procedure as described above. The above cylinder
The driving force of 13,22,33,42 are all springs 16l, 16r; 25l, 25
Since it is transmitted to the work W through the resilience of r; 36l, 36r; 49l, 49r, the work W is prevented from being scratched by absorbing the error in the stroke of the cylinders 13,22,33,42. It When the model detection of all four workpieces W is completed, the detected workpiece W is discharged at the transport position (not shown), and a new workpiece W is placed on the reference seats 6l and 6r and Model detection work is started.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various small designs can be made without departing from the present invention described in the scope of claims for utility model registration. It is possible to make changes.

For example, in the embodiment, the work W is placed on each of the pair of left and right reference seats 6l and 6r to detect the models of the two works W at the same time, but it is also possible to detect the models of the works W one by one. Is.

C. Effect of the Invention As described above, according to the present invention, the probe contacting both side surfaces of the work for detecting the width of the work and the upper surface of the work for detecting the thickness of the work are contacted. Since all of the contacting probes have a work clamp function, the work of positioning and fixing the work to the reference seat, which was required in the past, is no longer necessary, and as a result, the structure of the entire device is simplified and the work time is shortened. It will be possible.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention.
Figure is the whole side view of the model detection device, and Figure 2 is that of Figure 1.
II-II sectional view, FIG. 3 is a view in the direction of arrow III in FIG. 2, and FIG.
The figure is a view in the direction of the arrow IV in FIG. 6l, 6r …… Reference seat, 12l, 12r …… Pressing rod, 17l, 17r…
… Clamp rod, 28l, 28r …… Clamp arm, 31,
31r …… Sensor, 32l, 32r …… Measuring rod, 40l, 40r ……
Detection rod, 41, 41r …… Measuring device body, 46l, 46r ……
Measuring rod, 53l, 53r …… Clamp arm, 54l, 54r ……
Stylus, 55l, 55r ... Detection rod, 56l, 56r ... Measuring device body, W ... Work

Claims (1)

[Scope of utility model registration request] 1. A work (W) placed on a reference seat (6l, 6r).
Is a work model detecting device that detects the model of the work (W) by measuring the width and thickness of the work (W), and presses the side surface of the work (W) to contact the reference seat (6l, 6r). Push rods (12l, 12r) to be driven and a pair of clamp arms (28l, 28r) provided with contact points (31, 31r) for clamping the side surface of the work (W) are opened and closed, and movable clamp rods (17l, 17r, 17r) and this clamp rod (1
7l, 17r) so that the clamp rod (17l, 17r)
r) and a measurement rod (32l, 32) that is integrally arranged with the detection rod (40l, 40r) of the measuring device body (41, 41r) for detecting the width of the workpiece (W)
r) and the upper surface of the work (W) so as to come into contact with the work (W).
Is clamped between the reference seat (6l, 6r) and
4l, 54r) equipped with a clamp arm (53l, 53r) and an integral measuring rod (55l, 55r) of the measuring device body (56l, 56r) for detecting the thickness of the workpiece (W) (46l, 46r) and a workpiece model detection device.