JP4248966B2 - Cup leak inspection device - Google Patents

Description

  The present invention relates to an apparatus for inspecting leaks for manufactured cups.

  Conventionally, a cup leak inspection is performed by extracting an arbitrary cup in a production process and performing a leak inspection on the cup. Specifically, the inspection method is to manually pour a certain amount of penetrating solution into a cup, leave it for a certain period of time, and then visually check for leaks.

  However, since the above-described conventional method is a manual operation, the method for storing the penetrant, the concentration, and the leaving time are not always the same. Further, since the final pass / fail judgment is also made visually, there is a disadvantage that the judgment criteria are not constant.

  In addition, a cup once poured with an osmotic solution for inspection cannot be shipped as a product even if it is a non-defective product and is discarded. Furthermore, if a defective product is found, the same lot as the defective product may be discarded without additional inspection.

  In addition, the final determination of the leakage of the cup is made by visual inspection by an inspector, and the inspection result is either good or bad, and cannot be quantitatively evaluated. For this reason, it is difficult to use the inspection result for improvement of production facilities and the like.

  The present invention has been made in consideration of such points, and can always inspect a cup under the same conditions and quantitatively evaluate the inspection result, and there is no need to discard the inspected cup. An object is to provide an inspection device.

  The present invention has a cup supply portion that has a flange and holds a cup opened on one side with the opening downward, and a lower surface opening that stores the cup with the opening facing downward and is sealed by the stored cup. It has an inspection case, a mounting table for placing the cup with the opening facing down and sealing the cup, an air ejection mechanism for ejecting inspection air into the cup, and a flow meter for measuring the flow rate of the inspection air A transport mechanism that receives the cup from the cup supply unit and transports it into the inspection case, the inspection case has a pressure gauge that detects air pressure leaking from the cup into the inspection case, and the bottom surface and the body of the cup are A cup leakage inspection device that faces a space in an inspection case that communicates with a pressure gauge.

  The present invention is a cup leakage inspection device in which the cup supply unit separates cups one by one from a state in which the cups are stacked and mounted, and supplies the cups onto the mounting table of the transport mechanism.

  The present invention is the cup leakage inspection apparatus, wherein the mounting table of the transport mechanism has a suction mechanism for sucking air in the cup.

  The present invention is a cup leakage inspection apparatus characterized in that a positioning projection that abuts the inner surface of a cup is provided on a mounting table of a transport mechanism.

  The present invention is a cup leak inspection apparatus characterized in that a pressure air and a vacuum mechanism are provided in an inspection case.

  The present invention is a cup leakage inspection apparatus further comprising a cup receiving unit that collects the inspected cup from the inspection case.

  The present invention is a cup leakage inspection device further comprising a data storage device for accumulating and storing inspection data of a pressure gauge corresponding to each cup.

  According to the present invention, a cup can be automatically inspected and quantitatively evaluated based on objective judgment criteria. The inspected cup can be a product.

  Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are diagrams showing an embodiment of a cup leak inspection apparatus according to the present invention. 1 is a top view showing a cup leak inspection apparatus, FIG. 2 is a side view showing a cup leak inspection apparatus, and FIG. 3 is a partial sectional view showing an inspection case containing a cup of the cup leak inspection apparatus. is there.

  First, the cup 15 to be inspected by the cup leak inspection apparatus 10 according to the present invention will be described. As shown in FIG. 3, the cup 15 is made of, for example, paper, and includes a body portion 15c having an opening 15a, and a flange 15b provided annularly around the periphery of the opening 15a of the body portion 15c. Of these, the flange 15b is formed by being wound outward from the opening 15a, and has a substantially circular cross section. Moreover, the trunk | drum 15c of the cup 15 is a wide shape toward the opening 15a from the bottom face.

  Next, the cup leak inspection apparatus 10 will be described. As shown in FIGS. 1 and 2, the cup leakage inspection apparatus 10 holds a plurality of cups 15, separates them one by one and supplies them downward, and cups 15 with openings 15 a facing downward. An inspection case 31 that is stored and inspected, a transport mechanism 40 that receives the cup 15 from the cup supply unit 20, transports the cup 15 to the inspection case 31, and jets inspection air into the cup 15, and has been inspected from the inspection case 31 And a cup receiving section 50 for collecting the cup 15.

  The cup supply unit 20 described above includes a first stopper 21 and a second stopper 22 located above the first stopper 21 as shown in FIG. The first stopper 21 and the second stopper 22 are composed of two flat plate members arranged to face each other. The members are connected to the air cylinder 23 and move in a direction in which the members are separated from each other and in a direction in which they are close to each other. be able to. Then, by closing the second stopper 22 and opening the first stopper 21, only the lowermost cup 15 is supplied to the transport mechanism 40 side from the cup 15 in a state where a large number of the openings 15 a are directed downward. It has become.

  Next, the inspection case 31 and the transport mechanism 40 will be described in detail. As shown in FIG. 3, the inspection case 31 has a cylindrical shape having a lower surface opening 32. When inspecting the cup, the cup 15 is accommodated in the inspection case 31 with the flange 15b in contact with the side end surface 31a of the inspection case 31. At this time, the lower surface opening 32 of the inspection case 31 is sealed by the cup 15. In this case, it is preferable that the inner diameter of the inspection case 31 is substantially the same as the outer diameter of the flange 15b mounting portion of the cup 15. Further, in the present embodiment, in order to ensure a sealed state between the cup 15 and the inspection case 31, a taper having the same angle as the taper angle of the side portion of the cup 15 is provided on the side edge of the lower surface opening 32 on the inner side surface of the inspection case 31. You may provide in a part. The depth of the inspection case 31 is deeper than the height of the cup 15.

  On the upper surface of the inspection case 31, a pair of openings 31b and 31c are provided. One opening 31b communicates with a pressure gauge 33 disposed on the upper part of the inspection case 31, and the other opening 31c is provided with a pressure pneumatic mechanism 35 for injecting air into the inspection case 31 via the tube 34, and an inspection. The case 31 communicates with a vacuum mechanism 36 that sucks air in the case 31.

  As shown in FIG. 2, the transport mechanism 40 includes a mounting table 41 on which the cup 15 is mounted, a vertical air cylinder 42 that moves the mounting table 41 in the vertical direction, a lower side of the cup supply unit 20, and a lower side of the inspection case 31. And a horizontal air cylinder 43 for moving the vertical air cylinder 42 in the horizontal direction. The transport mechanism 40 receives the cup 15 from the cup supply unit 20 on the mounting table 41, and transports the cup 15 into the inspection case 31 by the vertical air cylinder 42 and the horizontal air cylinder 43.

  As shown in FIG. 3, the mounting table 41 of the transport mechanism 40 has a positioning protrusion 41 a disposed on the upper surface, and the positioning protrusion 41 a is an annular protrusion and has a trapezoidal cross section. The material of the positioning protrusion 41a is made of rubber, for example.

  The mounting table 41 further has a communication hole 41 b penetrating the inside of the mounting table 41 from the upper surface to the side surface of the mounting table 41, and the end of the communication hole 41 b is connected to the tube 46 via the pressure gauge 44 and the flow meter 45. The tube 46 communicates with an air ejection mechanism 47 for ejecting inspection air into the cup 15 and a suction mechanism 48.

  The suction mechanism 48 is for sucking and fixing the cup 15 to the mounting table 41 when the cup 15 is transported by the transport mechanism 40, and the upper surface of the mounting table 41 is sucked between the flange 15 b of the cup 15. It is made of a soft material such as silicon so that the state can be kept good.

  The cup receiving unit 50 for collecting the inspected cup 15 has a non-defective product receiving device 51 for receiving non-defective products and a defective product receiving device 54 for receiving defective products, as shown in FIG. The non-defective product receiving device 51 and the defective product receiving device 54 include receiving cars 52 and 55 and air cylinders 53 and 56 that convey the receiving cars 52 and 55, respectively. Of these, the receiving baskets 52 and 55 are composed of disk-shaped tables 52a and 55a and frames 52b and 55b constituted by three cylindrical rods mounted on the tables 52a and 55a. The cup 15 is received with the opening 15a facing downward. The tables 52a and 55a of the receiving cars 52 and 55 are connected to the mandrel of the air cylinders 53 and 56. The air cylinders 53 and 56 are arranged between the predetermined position shown in FIG. 55 is reciprocated.

  The cup leakage inspection device 10 further includes a data storage device 60. The data storage device 60 accumulates and stores the inspection data measured by the pressure gauge 33 of the inspection case 31.

  Next, the operation of the present embodiment having such a configuration will be described.

  First, the cup 15 to be inspected is held in the cup supply unit 20. At this time, the second stopper 22 is opened with the first stopper 21 closed, and after placing all the cups 15 with the openings 15a facing downwards on the first stopper 21, the second stopper 22 is closed. To do. Next, the mounting table 41 of the transport mechanism 40 is disposed immediately below the cup supply unit 20 by the horizontal air cylinder 43 and the vertical air cylinder 42 of the transport mechanism 40, and the first stopper 21 of the cup supply unit 20 is opened. At this time, one cup arranged at the lowermost position among the cups 15 held in a state of being stacked on the cup supply unit 20 is taken out and supplied onto the mounting table 41 of the transport mechanism 40.

  The cup 15 supplied onto the mounting table 41 of the transport mechanism 40 is positioned on the mounting table 41 by bringing the inner surface of the cup into contact with a positioning protrusion 41 a provided on the mounting table 41. Next, using the suction mechanism 48 of the transport mechanism 40, the air in the cup 15 is sucked through the communication hole 41b arranged on the top surface of the mounting table 41. When the inside of the cup 15 is sucked by the suction mechanism 48 of the transport mechanism 40, the pressure gauge 44 of the transport mechanism 40 is used automatically until the cup 15 reaches a predetermined pressure so that the cup 15 is not crushed. It is attracted to 40 mounting tables 41.

  In this case, since the upper surface of the mounting table 41 is made of a soft material, the flange 15 b of the cup 15 is reliably adsorbed by the upper surface of the mounting table 41. Thereafter, the transport mechanism 40 transports the cup 15 adsorbed on the mounting table 41 downward by the vertical air cylinder 42, transports the cup 15 below the inspection case 31 by the horizontal air cylinder 43, and then the vertical air cylinder 42. Thus, the cup 15 is conveyed upward, and the cup 15 is stored into the inspection case 31 from the lower surface opening 32 of the inspection case 31.

  At this time, since the cup 15 is positioned by the positioning protrusion 41a on the mounting table 41 of the transport mechanism 40, and the taper is provided on the side edge of the lower surface opening 32 of the inner side surface of the inspection case 31, the cup 15 is smoothly inspected. You can enter the case 31. Therefore, the cup 15 and the inspection case 31 do not collide and the cup 15 is not crushed.

  During this time, the other cups 15 left in the cup supply unit 20 are held by the closed second stopper 22. After the lowermost cup 15 is adsorbed by the mounting table 41 of the transport mechanism 40, the first stopper 21 of the cup supply unit 20 is closed and the second stopper 22 is opened. Accordingly, the cup 15 arranged in the cup supply unit 20 is shifted downward by one, and all the cups are supported by the first stopper 21. Thereafter, the second stopper 22 is closed, and the cup 15 arranged in an overlapping manner is held by the first stopper 21 and the second stopper 22. In this state, the next cup 15 is prepared for supply.

  In the inspection case 31, as shown in FIG. 3, after the cup 15 is accommodated, the vertical air cylinder 42 of the transport mechanism 40 presses the mounting table 41 of the transport mechanism 40 toward the inspection case 31. As a result, the annular flange 15b of the cup 15 is narrowed between the side end face 31a of the inspection case 31 and the mounting table 41 of the transport mechanism 40, and the cup 15 is formed between the mounting table 41 of the transport mechanism 40 and the inspection case 31. Fixed between. In this case, the lower surface opening 32 of the inspection case 31 is sealed by the cup 15, and the opening 15 a of the cup 15 is sealed by the mounting table 41 of the transport mechanism 40.

  Next, the inspection is started in this state. First, suction by the suction mechanism of the transport mechanism 40 is stopped, and inspection air is supplied into the cup 15 using the air ejection mechanism 47 of the transport mechanism 40. When supplying inspection air by the air ejection mechanism 47 of the transport mechanism 40, the test air is automatically supplied using the pressure gauge 44 of the transport mechanism 40 until the pressure reaches a predetermined pressure that does not cause the cup 15 to rupture.

  By the way, the transport mechanism 40 also has a flow meter 45 for measuring the flow rate of inspection air ejected into the cup 15. Therefore, if the pressure in the cup 15 does not increase even when the inspection air having a constant flow rate is ejected from the air ejection mechanism 47 of the transport mechanism 40, this state can be detected by the flow meter 45, and the cup 15 is in a sealed state. Abnormality, that is, the presence or absence of defects in the flange 15b portion of the cup 15 can be inspected.

  After the inspection air of a predetermined pressure is sealed in the cup 15, the pressure in the inspection case 31 is measured by the pressure gauge 33 of the inspection case 31, thereby determining whether there is inspection air leaking from the cup 15 into the inspection case 31. The quality of the cup 15 is determined. The measured data is stored in the data storage device 60.

  After the leak inspection of the cup 15 is completed, the air in the inspection case 31 is sucked by the vacuum mechanism 36 of the inspection case 31 and the cup 15 is adsorbed to the inspection case 31. Thereafter, the mounting table 41 of the transport mechanism 40 is moved again directly below the cup supply unit 20 by the vertical air cylinder 42 and the horizontal air cylinder 43 of the transport mechanism 40, and the next cup 15 from the cup supply unit 20 is moved. Prepare for supply.

  The cup 15 adsorbed by the inspection case 31 is collected by the cup receiving unit 50. That is, when the cup 15 is a non-defective product, the air cylinder 53 of the non-defective product receiving device 51 extends so that the receiving basket 52 of the non-defective product receiving device 51 in the cup receiving unit 50 comes below the inspection case 31. Similarly, when the cup 15 is a defective product, the air cylinder 56 of the defective product receiving device 54 extends so that the receiving basket 55 of the defective product receiving device 54 is located below the inspection case 31.

  After the receiving cages 52 and 55 of any one of the receiving devices 51 and 54 are arranged below the inspection case 31, suction by the vacuum mechanism 36 of the inspection case 31 is stopped, and the inside of the inspection case 31 is detected by the compressed air mechanism 35 of the inspection case 31. Turn on air. As a result, the cup 15 adsorbed to the inspection case 31 falls. At this time, with the opening 15a facing downward, the cup 15 is guided and dropped by the frames 52b and 55b of the receiving cages 52 and 55 of any of the receiving devices 51 and 54, and the cup 15 It is collected in a state where it is overlapped on the tables 52a and 55a.

  As described above, according to the present embodiment, the cup 15 can be automatically sorted into a non-defective product and a defective product simply by storing and holding the cup 15 in the inspection case 31, and the operator's discretion. There is no room to enter, and the quality of the cup 15 can be objectively determined.

  Further, when the cup 15 is inspected, the cup 15 always faces the opening 15a downward, and the transport mechanism 40 holds the cup 15 from below. Oil does not fall into the cup 15.

  Furthermore, since the penetrant is not used as in the prior art and the quality of the cup 15 is judged based on the leakage of compressed air, a good product after the inspection can be used as a product. Therefore, when defective products are generated, all the same lots can be inspected and good products can be collected as products, so that it is not necessary to discard all the lots including defective products, and the yield is improved.

  Furthermore, since the inspection is performed based on the measurement value of the pressure gauge 33 of the inspection case 31, not only the quality of the cup 15 can be evaluated qualitatively but also quantitatively. Therefore, the inspection result can be used for improving production facilities and the like.

  Moreover, the conveyance mechanism 40 has the pressure gauge 44 and the flowmeter 45, and the abnormality of the flange part 15b of the cup 15 can also be test | inspected by test | inspecting the sealing state of the cup 15 using these.

The top view which shows one Embodiment of the cup leak test | inspection apparatus by this invention. The front view which shows one Embodiment of the cup leak test | inspection apparatus by this invention. The fragmentary sectional view which shows the test | inspection case which accommodated the cup of the cup leak test | inspection apparatus by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cup leak test | inspection apparatus 15 Cup 15a Opening 15b Flange 20 Cup supply part 31 Inspection case 32 Lower surface opening 33 Pressure gauge 35 Pneumatic mechanism 36 Vacuum mechanism 40 Conveying mechanism 41 Mounting base 41a Positioning protrusion 45 Flow meter 47 Ejecting mechanism 48 Suction mechanism 50 Cup Receiving unit 60 data storage device

Claims (6)

A cup supply unit having a flange and holding a cup that is open on one side with the opening facing downward;
An inspection case having a lower surface opening that stores the cup with the opening facing downward and is sealed by the stored cup;
A cup supply unit having a mounting table for placing the cup with the opening facing downward and sealing the cup, an air ejection mechanism for ejecting inspection air into the cup, and a flow meter for measuring the flow rate of the inspection air A transport mechanism that receives the cup from the transport case and transports it into the inspection case,
Test case has a pressure gauge for detecting the air pressure leaking into the test case from the cup, the bottom and barrel of the cup faces the space in the test case in communication with the pressure gauge, the mounting of the transport mechanism The mounting table is provided with a positioning projection that contacts the inner surface of the cup, the flange of the cup is sandwiched between the side end surface of the inspection case and the mounting table, and the cup is positioned from the inner surface by the positioning projection of the mounting table. Cup leak inspection device.   The cup leakage inspection device according to claim 1, wherein the cup supply unit separates the cups one by one from the state where the cups are stacked and mounted, and supplies the cups onto the mounting table of the transport mechanism.   The cup leakage inspection device according to claim 1, wherein the mounting table of the transport mechanism has a suction mechanism for sucking air in the cup.   The cup leakage inspection device according to claim 1, wherein the inspection case is provided with compressed air and a vacuum mechanism. Cup leakage inspection apparatus according to claim 1, further comprising a cup receiving portion for collecting the inspected cup from the test case.   2. The cup leakage inspection device according to claim 1, further comprising a data storage device for accumulating and storing pressure gauge inspection data corresponding to each cup.

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