JPH06126563A - Seal material working device - Google Patents

Abstract

PURPOSE:To provide a seal material working apparatus capable of automating the trimming and inspection of moldings of seal materials such as oil seals and the sorting of defective products and capable of increasing or decreasing working means and inspecting means without monopolizing a useless space. CONSTITUTION:A pick-up means 2 for taking out workpieces 1 one by one and a working means 3 for trimming the work 1 taken out by the pick-up means 2 are provided. An inspecting means 4 for inspecting the workpiece 1 worked by the working means 3 and a sorting means 5 for sorting good products from defective ones inspected by the inspecting means 4 are provided. The working means 3, inspecting means 4 and sorting means 5 are sequentially arranged on a straight line as viewed in a plan.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing material processing apparatus.

[0002]

2. Description of the Related Art When a seal material such as an oil seal is manufactured, it is common to use a trimming machine or the like to deburr or punch a seal material molded product. Conventionally, such processes as deburring and drilling are performed automatically or semi-automatically by a short-head trimming machine, or automatically by a rotary trimming device with multiple trimming machines arranged on the circumference. Was going to.

[0003]

The above rotary type trimming device is suitable for mass production of the sealing material. However, in this device, as the number of processing machines such as trimming machines arranged on the circumference increases. However, the diameter of the circumference becomes large, and the inner circumference occupies a wasteful space.

Furthermore, in the rotary trim device, the number of processing machines that can be added later is very small. Moreover, the inspection process and the selection process after processing could not be automated.

Therefore, the present invention solves such a problem, can provide an inspection means and a selection means, and can increase or decrease the processing means, the inspection means and the selection means without occupying a wasteful space, It is an object of the present invention to provide a sealing material processing device capable of automating processing such as deburring and punching of sealing material, inspection, and selection.

[0006]

A sealing material processing apparatus according to the present invention includes a pick-up means for picking up works one by one, a working means for trimming the works taken out by the pick-up means, and a working means. Inspecting means for inspecting the workpieces, and sorting means for sorting the workpieces inspected by the inspecting means into non-defective products and defective products, the processing means, the inspecting means, and the sorting means, They are arranged in a straight line in a plan view.

[0007]

Since the processing means, the inspection means, and the selection means are sequentially arranged in a straight line when seen in a plan view, each means can be expanded and contracted in the longitudinal direction without limitation. Moreover, no space is wasted due to this expansion / reduction. Also,
Processing, inspection and selection of sealing materials are performed automatically.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments.

FIG. 1 shows an embodiment of a sealing material processing apparatus according to the present invention, which is used for forming a finished sealing material by subjecting a molded sealing material such as an oil seal to a predetermined process. The pickup means 2 for picking up the work 1 as a molded product one by one, the processing means 3 for trimming the work 1 taken out by the pickup means 2, and the work 1 processed by the processing means 3 are inspected. The inspection means 4 and the selection means 5 for selecting the work 1 inspected by the inspection means 4 into a good product and a defective product.

The pickup means 2 is composed of a large number of works 1.
A parts feeder 8 having a hopper 6 for accommodating ... And a linear feeder part 7, and a first transfer actuator 9 for picking up the works 1 sent from the parts feeder 8 one by one and transferring them to the processing means 3. I have it. At the exit of the straight feeder part 7, a metal frame part which will be described later is attached to the work 1.
A magnetic sensor is installed to check whether or not the work piece 19 has been installed properly, and the work without the frame part 19 assembled is discharged to the discharge part (not shown). is there.

The first transfer actuator 9 holds the work 1 and moves up and down by a predetermined dimension.
And a arm 12 for reciprocating the hand 11 between the pickup means 2 and the processing means 3.
It consists of and.

In the illustrated example, the arm portion 12 of the first transfer actuator 9 is formed of a cylinder.

The processing means 3 has a processing station 49. The processing station 49 has a first transfer actuator 9
There is provided a spindle unit 13 for chucking the work 1 sent by the above and rotating the work 1 about its axis.

The processing means 3 is a spindle unit.
Workpiece 1 chucked on 13 spindle unit
A work holder 14 to be held on 13, a trimming machine 15 having a cutter 17 to be cut into the work 1 for processing such as deburring and boring, and a grinder 16 for grinding the work 1.
16 and.

The work 1 before processing is, for example, as shown in FIGS.
And has a shape as shown in FIG.

That is, the work 1 is composed of a seal portion 18 made of rubber or resin, and a metal frame portion 19,
Moreover, the outer shape in plan view is circular.

Then, the cutter 17 of the trimming machine 15 is cut along the imaginary line in the work 1 rotating around the axis, and the inner peripheral portion and the outer peripheral corners of the work 1 are cut off. That is, for example, in the case of the work 1 shown in FIG. 2, the disk-shaped wall portion 24 of the inner peripheral portion is cut off as shown in FIG. 5 to make a hole, and the inner peripheral portion is projected in the axial direction. A seal lip 25 is formed.

The work 1 may have any shape other than the work 1 shown in FIGS. 2, 3, and 4.

The trimming machine 15 (returning to FIG. 5) has a head portion 20 to which a cutter 17 is attached, and a drive mechanism 21 for moving the head portion 20 toward and away from the work 1 with high accuracy.
And is supported by a support body (not shown) so as to be inclined with respect to the axis of the work 1.

The drive mechanism 21 includes a female screw portion provided at the base end portion of the head portion 20, a screw rod 22 having a male screw portion which is screwed into the female screw portion so as to be capable of screwing back and forth, and this screw rod. And a motor 23 such as a pulse motor that drives the 22 to rotate about its axis.

Further, the head portion 20 has a micrometer unit 26 having a micrometer and moving the cutter 17 with high precision in a direction inclined with respect to the radial direction of the work 1.

Therefore, the fine movement unit 26 causes the cutter 17 to
By finely adjusting the position of, the inner diameter D of the seal lip 25 can be easily adjusted with high accuracy.

Referring back to FIG. 1, the grinders 16 and 16 are attached to a moving base 27 that reciprocates so as to approach and separate from the work 1 on the spindle unit 13.

On the side of the processing means 3, the processing means 3 is provided.
A second transfer actuator 28 that transfers the work 1 processed in (1) to the inspection means 4 on the downstream side is provided.

Like the first transfer actuator 9, the second transfer actuator 28 is composed of a hand part 11 having chucking claws 10 and an arm part 12.

The inspection means 4 comprises an upstream check station 29 and inspection stations 31 ... Which are sequentially arranged on the downstream side.

The second transfer actuator 28 transfers the work 1 on the spindle unit 13 to the check station 29 of the inspection means 4.

The check station 29 is equipped with a sensor 30 which determines whether or not the work 1 has been sent and also determines whether or not the work 1 has been punched.

As the sensor 30, it is preferable to use, for example, a sensor having a contact rod that is in direct contact with the work 1 and senses the presence or absence of the work 1 and whether or not the work 1 is perforated. You are free to use the ones.

Reference numeral 32 denotes a table plate on which the work 1 is placed, and at the check station 29, the sensor 30 is arranged on the upper surface side or the lower surface side of the table plate 32.

The check station 29 can prevent the cutting of the work 1 by the cutter 17 of the trimming machine 15.

As shown in FIG. 6, the inspection station 31 has a transparent plate 34 for mounting the work 1 fitted in the upper opening of the hole 33 provided in the table plate 32, and the transparent plate 34. Light source that is arranged below the window and emits light in the vertical direction
35, a CCD camera 36 arranged above the transparent plate 34,
Is equipped with.

The sorting means 5 includes a defective product discharge port 48 provided on the table plate 32 and a defective product discharge actuator 46 for dropping the work 1 into the defective product discharge port 48.

The tip side of the defective product discharge actuator 46 is a sorting station 50 where the work 1 is temporarily stopped. That is, the defective product discharge actuator 46 and the defective product discharge port 48 are arranged on the sides of the sorting station 50.

Specifically, the defective product discharge actuator 46 is formed of a cylinder and is reciprocally driven so as to approach and separate from the defective product discharge port 48.

On one side of the inspection means 4 and the selection means 5,
A progressive feed actuator 41 is provided for transporting the work 1 from the check station 29 to the inspection station 31, ..., The sorting station 50 and the product storage box 47.

The forward feed actuator 41 includes a vertical drive plate 42a that reciprocates in the longitudinal direction indicated by the arrow A of the inspection means 4, and a lateral direction indicated by an arrow B orthogonal to the longitudinal direction by a cylinder fixed on the vertical drive plate 42a. And a horizontal drive plate 42b arranged above the vertical drive plate 42a.

A plurality of hand parts 11 having chucking claws 10 are attached at a predetermined pitch on the side of the lateral drive plate 42b on the inspection means 4 side.

Specifically, the number of hand parts 11 ...
31 and the sorting station 50 of the sorting means 5 (5 in the illustrated example).

Therefore, the reciprocal drive of the vertical drive plate 42a and the reciprocal drive of the horizontal drive plate 42b of the forward feed actuator 41 are appropriately controlled, and the horizontal drive plate 42b is relatively moved with respect to the inspection means 4 and the selection means 5. In a plan view, the rectangular circular motion is made in the order of arrows E, F, G, and H.

By this patrol movement, the respective hand parts 11 ...
Sequentially conveys the work 1 to the adjacent inspection station 31 on the downstream side, the sorting station 50, or the product storage box 47. Each hand unit 11 has a sensor function such as a limit switch that determines whether or not there is a chuck error to prevent troubles.

As shown in FIG. 7, the CCD camera 36 of the inspecting means 4 analyzes the image of the CCD camera 36 to determine whether the work 1 is a good product or a defective product. It is connected.

This product quality judging means 43 is a CCD camera.
Image processing means 37 for binarizing the image of 36 to measure the inner diameter, outer diameter, eccentricity, etc. of the work 1, and a monitor 38 connected thereto.
An inner diameter / outer diameter comparison / determination means for comparing the data sent from the image processing means 37 with data set in advance by the setting means 44 and outputting a determination signal, an abnormal signal, etc.
39, the image processing means 37 and the inner diameter / outer diameter comparison / discrimination means 39 are controlled, and a signal from the inner diameter / outer diameter comparison / discrimination means 39 is received and the defective product discharge actuator 46 of the sorting means 5 is received.
Main body sequencer 40 that controls the drive of
An operation panel 45 for operating the operation of 40 is provided.

The drive of the defective product discharge actuator 46 is controlled by the main body sequencer 40 of the product quality determination means 43.

That is, when the work 1 that has passed through the inspection station 31 of the inspection means 4 is a defective product, a signal indicating the defective product is sent from the inner diameter / outer diameter comparison / determination means 39 to the main body sequencer 40, whereby the main body. The sequencer 40 drives the defective product discharge actuator 46, and the work 1 discharges the defective product 48
Dropped inside.

On the contrary, when the work 1 which has passed the inspection station 31 of the inspection means 4 is a non-defective product, the inner diameter / outer diameter comparison / determination means 39 sends a signal indicating the non-defective product to the main body sequencer 40.

When the signal indicating the non-defective product is received, the main body sequencer 40 does not drive the defective product discharge actuator 46,
The work 1 in the sorting means 5 is conveyed into the product storage box 47 by the forward feed actuator 41 shown in FIG.

It should be noted that whether or not the main body sequencer 40 drives the defective product discharge actuator 46 may be determined by the presence or absence of an output signal from the inner diameter / outer diameter comparison / determination means 39.

Next, the measurement of the inner diameter of the work 1 and the measurement of the amount of eccentricity are performed as follows. That is, as shown in FIG.
In the image showing the work 1, eight straight lines (straight line OO 'to straight line V-V') passing through the center thereof are set.

At this time, the CCD camera 36 is focused on the seal lip 25 of the work 1.

Then, this image is decomposed into innumerable dots and binarized, and as shown in FIG. 9, a dark portion β indicating the presence or absence of the work 1 along the above straight line (straight line OO ′ in the illustrated example).
It is divided into ₁ and β ₂ and bright parts α ₁ , α ₂ and α ₃ .

Since the bright part α ₂ on each of the straight lines corresponds to the inner diameter of the work 1, the bright part α ₂ on the eight straight lines is
The width dimension D'of is calculated from the number of dots, and this is averaged to obtain the inner diameter dimension of the work 1. Alternatively, the average value of the number of dots of the bright part α ₂ on the eight straight lines is obtained, and the inner diameter dimension of the work 1 is converted from this average value.

When the inner diameter dimension of the work 1 thus obtained is larger or smaller than the predetermined dimension range, it is judged as a defective product. On the contrary, if it is within the predetermined size range, it is determined as a good product.

According to the above, since the inner diameter of the work 1 is obtained as an average value measured at eight locations, it is possible to prevent the measured values from varying even when the inner diameter of the same work 1 is measured a plurality of times. It is possible to reduce the measurement error.

The difference in the number of dots between the dark portion β ₁ and the dark portion β ₂ on each straight line is the eccentricity amount.

When the amount of eccentricity thus obtained is larger than the predetermined number of dots or when the deviation is larger than the predetermined variation range, the work 1 is determined as a defective product, and in the opposite case, it is a good product. To be judged.

Since the eccentricity has an error due to the distortion of the lens of the CCD camera 36, it is preferable to image the work 1 in the center of the visual field of the CCD camera 36 in order to reduce the error.

As described above, one CCD camera
At 36, both the inner diameter dimension of the work 1 and the eccentricity amount can be measured.

Incidentally, FIG. 1 shows three inspection stations 31 ...
The measurement of the inner diameter dimension and the measurement of the eccentricity amount and the lip whiskers are performed at one inspection station 31, and the remaining two inspection stations 31, 31 are used for other inspections (for example, chatter, It is used for inspection such as chipping).

This sealing material processing apparatus is of a transfer type (as is clear from FIG. 1), and the processing station 49 of the processing means 4 and the check station 29 and the inspection station 31 of the inspection means 4 on the downstream side thereof are selected. Means 5
And the sorting station 50 are arranged on a straight line in a plan view.

Therefore, the entire apparatus becomes long and thin, and it can be installed compactly without occupying an extra space in the factory.

Further, in the illustrated example, the pickup means 2, the processing means 3, the inspection means 4 and the selection means 5 are arranged for one table plate 32, but as another embodiment, the table plate 32 is provided. It is conceivable that the above can be divided for each means or for each station.

That is, by doing so, it is possible to further expand the apparatus in the longitudinal direction by further adding another processing means or inspection means between the above means. Further, by expanding in the longitudinal direction, it is possible to prevent monopolization of an extra space.

Further, a part of the inspection station 31 and the like can be easily removed, and the length of the whole apparatus can be shortened to make it compact.

[0065]

Since the present invention is constructed as described above,
The following effects are achieved.

The entire apparatus can be installed in a factory without occupying a wasted space.

Since the inspection means 4 and the selection means 5 can be provided, the steps from the trimming of the work 1 as a molded product of the sealing material to the inspection and the selection of good products and defective products can be automated. And, it becomes possible to mass-produce the sealing material.

It is possible to increase or decrease the means such as the processing means 3, the inspection means 4 and the selection means 5 on a straight line without occupying a wasteful space.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a half sectional view showing an example of a work.

FIG. 3 is a half cross-sectional view showing another example of the work.

FIG. 4 is a half cross-sectional view showing another example of the work.

FIG. 5 is a schematic diagram showing a trim machine.

FIG. 6 is a sectional front view of a main part of the inspection means.

FIG. 7 is a block diagram showing product quality determination means.

FIG. 8 is a schematic diagram illustrating a method for measuring a work.

FIG. 9 is a schematic diagram illustrating a method for measuring a work.

[Explanation of symbols]

 1 Work 2 Pickup Means 3 Processing Means 4 Inspection Means 5 Sorting Means

Claims (1)

[Claims] 1. Pick-up means for picking up one work at a time, processing means for trimming the work taken out by the pick-up means, inspection means for inspecting the work processed by the processing means, and the inspection means. And a sorting means that sorts the workpieces inspected into a non-defective product and a defective product, the processing means, the inspection means, and the sorting means,
A sealing material processing device, which is arranged in a straight line in a plan view.