JP3783207B2 - Product quality determination method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and apparatus for automatically performing product quality in a molded product including a pair of products and a runner between the products.
[0002]
[Problems to be solved by the invention]
In the molded product 1 including the pair of products 2 and 2 and the runner 3 between the products as shown in FIG. 1, the corner portions of the products 2 and 2 farthest from the sprue 4 at the center of the runner 3 are likely to be lost due to a short shot. . However, in the recovery by natural fall from the chute to the storage box or the like, the direction of the molded product discharged from the chute differs for each drop, so in order to judge the quality of the products 2 and 2 by the inspection device such as the image processing means, It is necessary to align the direction of the molded product 1 by some means and direct the inspection device to the inspection side of the molded product 1.
[0003]
The present invention has been conceived from the above circumstances, and its purpose is to specify the runner position with respect to a pair of products as an eccentric position so that directionality occurs in the molded product itself, and the eccentric load when the runner is pushed up and supported. The present invention provides a new method and apparatus in which the product inspection side is always directed in the same direction by the reversal of the molded product, and the product quality can be automatically determined by the inspection device.
[0004]
[Means for Solving the Problems]
According to the above-described object, the quality determination method of the present invention provides a runner at an eccentric position on the opposite side of the product when a molded product including a pair of products and a runner between the products is clamped to determine the quality of the product. Then, from the difference between the runner position and the center of gravity of the molded product, the molded product is formed so as to be reversed in one direction with the runner as a fulcrum, and the molded product is formed in the V-shaped receiving groove on the upper surface of the receiving member provided obliquely from the chute. After sliding in and regulating the direction, the molded product is pushed up by a member in contact with the runner from the lower side of the V-shaped receiving groove in the horizontal position, and in the process, the test side is supported downward with the runner as a fulcrum, The molded product is moved to the inspection device side with the runner sandwiched, and the quality determination is performed with the inspection side of the product facing the front of the inspection device.
[0005]
The pass / fail discrimination device of the present invention is a molded product formed by reversing the runner in one direction around the runner from the difference between the runner position and the center of gravity position by providing the runner at the eccentric position on the opposite side of the product. A receiving member provided on the upper surface with a V-shaped receiving groove to be received from the chute, a support member having a V-shaped upper end penetrating the runner portion of the receiving member from below, and a runner portion sandwiched by the chuck The inspection side of the molded product is rotated and transferred to the front of the inspection device, the rotation transfer device is attached to the upper plate surface, the receiving member is attached to the lower plate surface together with the operation device of the support member, and the receiving member is attached to the chute. It is composed of a swinging plate that is provided on a base that is erected in the vicinity of the chute so as to reciprocate between an inclined position connected to the inclined discharge port and a horizontal position.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
In the figure, reference numeral 10 denotes a chute, which is not shown in the figure, but is installed in the machine base at the mold opening position of the mold clamping device. As shown in FIGS. 1 and 2, the chute 10 is provided with the runners 3 of the pair of products 2 and 2 at the eccentric positions on the opposite side of the products 2 and 2, and the center of gravity of the molded product 1. Due to the difference from A-A, the molded product 1 formed so as to be reversed in one direction naturally falls onto the chute 10 every time the mold is opened, and slides out to the discharge port 11 by the inclined bottom surface. go.
[0007]
In the vicinity of the discharge port 11 of the chute 10, a base 12 is erected in parallel with the sliding direction of the molded product 1, and a swing plate 13 is vertically installed on the base 10 by a rotating shaft 13 a. is there. A receiving member 14 connected to the discharge port 11 at the same inclination is attached to the lower plate surface of the swing plate 13 together with an operation member 16 (see FIG. 5) such as an air cylinder of the support member 15. Further, the upper surface of the receiving member 14 is provided in the longitudinal direction of the V-shaped receiving groove 17, and a receiving portion 17 a slightly longer than the length of the molded product 1 is provided at the bottom of the V-shaped receiving groove 17 on the rear side of the discharge port side. Is provided with a stepped portion 17b for preventing reversion.
[0008]
A pair of support members 15, 15 made of a plate whose tip is formed in a V shape having the same shape as the V-shaped receiving groove 17, penetrates the receiving member 17 and extends upward at two locations of the runner portion of the housing portion 17 a. The receiving member 14 is penetrated from the lower side so as to protrude high, and sensors 18 for confirming accommodation by photoelectric tubes or the like are attached to both sides of the distal end portion of the accommodating portion 17a.
[0009]
On the upper plate surface of the rocking plate 13, a device 19 for rotating and transporting the molded product 1 to the inspection position with a push-up interval on the receiving member, together with the driving device 20 so as to rotate along the rocking plate 13. It is installed. The rotary transfer device 19 is provided with a chuck 21 for holding the runner portion of the molded product 1 on a downward shaft portion so as to be opened and closed up and down.
[0010]
At the inspection position, a camera 22 of an inspection device that determines whether the product 2 is good or bad by image processing is provided by attaching the base 12 to a frame 23 that stands vertically, and the molded product 1 is placed on the front surface of the camera 22. The inspection side is sandwiched and directed by the chuck 21 of the rotary transfer device 19, and the inspection side is judged by image processing to determine pass / fail. Reference numeral 24 denotes a rotation driving device for the swing plate 13.
[0011]
Next, the quality determination of the products 2 and 2 will be described. The molded product 1 that has dropped onto the chute 10 slides into the V-shaped receiving groove 17 of the receiving member 14 that is inclined at the discharge port 11 due to the inclination of the chute bottom surface. It fits in the accommodating part 17a. When the molded product 1 is caught by the stepped portion 17b and cannot be completely accommodated and it cannot be confirmed by the sensor 18, the swinging plate 13 is rotated to reciprocate between the inclined position and the horizontal position. 1 is slid into the accommodating portion 17a. Backward movement due to the swing of the molded product 1 contained in the housing portion 17a is prevented by the step portion 17b.
[0012]
When the molded product is confirmed, the swing plate 13 is rotated to a horizontal position (35 °), and after stopping, the support member 15 is operated to push up two portions of the runner portion. As shown in FIG. 6, the molded product 1 accommodated in a normal state with the inspection side of the products 2 and 2 facing downward is located below the runner position where the center of gravity is the support point. Without being done, it is pushed up to the clamping position of the chuck 21 in that posture.
[0013]
When the support member 15 reaches the upper limit and stops, the chuck 21 is closed to hold the runner 3 of the molded product 1. The rotary transfer device 19 rotates 90 ° in the camera direction along the plate surface of the swing plate 13 after being held. As a result, the inspection side of the molded product 1 changes from the downward direction to the horizontal direction, and is placed in front of the camera 22. The camera 22 copies the images on the inspection side of the products 2 and 2, and the quality is determined by image processing.
[0014]
The inspected molded product 1 is released at that position when the chuck 21 is opened, and is dropped and stored in the lower storage box, although not shown in the figure. Storage boxes are prepared for non-defective products and defective products, and the storage boxes are exchanged according to a command from the inspection apparatus to classify the non-defective products and the defective products. After the chuck 21 is opened, the rotary transfer device 19 returns to the original position, and the swing plate 13 rotates to shift the receiving member 14 from the horizontal position to the inclined position, and makes the discharge port 11 stand by.
[0015]
As shown in FIG. 7, even if the molded product 1 is accommodated upside down and the inspection side faces upward, or may be accommodated obliquely as shown in FIG. 8, the molded product 1 is accommodated in the accommodating portion 17a. As long as the molded product 1 is pushed up by the support member 15 after the receiving member 14 is set in the horizontal position, the runner 3 is reversed as a fulcrum, and the inspection side faces downward as indicated by a chain line. Therefore, the inspection side of the molded product 1 is all adjusted downward before being clamped by the chuck 21 regardless of the state of sliding into the V-shaped receiving groove 17. The pass / fail judgment of 2 can always be performed automatically and accurately.
[0016]
In addition, when performing sampling inspection of one shot between arbitrarily set number of shots, adopt a reverse chute that can switch the discharge direction of the chute molded product, switch the discharge direction every 10 shots or 20 shots set, The quality of the product can be determined by the same process as described above.
[0017]
Furthermore, the swinging plate can be reciprocated in accordance with the molding cycle, and the molded product can be pushed up and supported in the horizontal position and rotated and transferred after being held by the chuck in an extremely short time. It is also suitable for molding, and the apparatus can be manufactured in a small size, so that there is an advantage that it is not expensive and can be used for determining whether a small molded product is good or bad.
[Brief description of the drawings]
FIG. 1 is a perspective view of a molded product suitable for a product quality determination method according to the present invention.
FIG. 2 is an explanatory view showing an inverted state on the inspection side when the molded product is similarly pushed up.
FIG. 3 is a front view showing the product quality judging device according to the present invention when it is tilted.
FIG. 4 is a front view showing the same horizontal state.
FIG. 5 is a side view of the above.
FIG. 6 is a longitudinal front view and a longitudinal end view of a receiving member when a molded product is normally accommodated in a V-shaped receiving groove.
FIG. 7 is a longitudinal front view and a longitudinal end view of the receiving member when the molded product is accommodated in the V-shaped receiving groove with the inspection side facing upward.
FIG. 8 is a longitudinal end view of the receiving member when the molded product is accommodated obliquely in the V-shaped receiving groove.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Molded product 2 Product 3 Runner 10 Chute 11 Discharge port 12 Base 13 Oscillating plate 13a Rotating shaft 14 Receiving member 15 Supporting member 17 V-shaped receiving groove 17a Accommodating part 17b Step part 18 Checking sensor 19 Rotating and moving device 21 Chuck 22 Inspection For camera

Claims (2)

  In order to determine the quality of a product by holding a runner between a pair of products and a runner between products, the runner is provided at an eccentric position on the opposite side of the product, and the position of the runner and the center of gravity of the molded product From the difference, the molded product is formed so as to be reversed in one direction with the runner as a fulcrum, and the molded product is slid into the V-shaped receiving groove on the upper surface of the receiving member obliquely provided from the chute to regulate the direction. The product is pushed up from the lower side of the V-shaped receiving groove in a horizontal position by a member that contacts the runner. In the process, the runner is supported downward with the runner as a fulcrum, and the runner is clamped and the molded product is And determining whether the product is good or not with the inspection side of the product facing the front of the inspection device.   A runner is provided at the eccentric position on the opposite side of the product, and a V-shaped receiving groove for receiving from the chute a molded product formed so as to be reversed in one direction with the runner as a fulcrum from the difference between the position of the runner and the position of the center of gravity. A receiving member provided on the upper surface, a support member having a V-shaped upper end penetrating the runner part of the receiving member from the lower side, and a runner part are clamped by the chuck to inspect the inspection side of the molded product A device that rotates and transfers to the front of the device, and the rotation and transfer device attached to the upper plate surface, and the receiving member is attached to the lower plate surface together with the actuating device of the support member, and the inclined position where the receiving member continues to the discharge port inclined by the chute And a horizontal position, a product pass / fail discrimination device comprising a swing plate provided on a base that stands upright in the vicinity of the chute.

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