JP5131402B1 - Component conveying device and component conveying method - Google Patents

Abstract

Even a small part is transported safely and reliably as long as it is a material attracted by magnetic force.
A transport apparatus 400 sucks and holds a component 30 supplied in a carry-in area by a suction head 100 and moves the suction head 400 to a carry-out area by moving the suction head 400 by a transport mechanism. In the suction head 100, a coil 110 is wound around a core body 102 made of a magnetic material to function as an electromagnet, and a component holding portion 108 that sucks the component 30 by its magnetic force is formed near the end of the core body 102. The energization control device 1000 controls the energization state of the coil 110 of the adsorption head 100 to switch the adsorption and release of the component 30 by the component holding unit 108.
[Selection] Figure 2

Description

  The present invention relates to an electronic component, a component conveying apparatus that conveys a component used for the electronic component, and the like.

  Conventionally, when parts are conveyed, a clamping structure in which the parts are chucked and held, a suction structure in which the parts are sucked and held by a nozzle, and the like are employed. Various parts are conveyed by moving a holding head provided with these clamping structures and suction structures by a conveyance mechanism of an XY robot structure or a turret structure.

  Considering the example of a mobile phone (smart phone), its function has increased to the level of a conventional personal computer. Therefore, it is necessary to accommodate a very large amount of electronic components inside the mobile phone, and the demand for downsizing of electronic components is increasing. For example, crystal oscillators have become smaller than a cube of 1.0 mm x 1.0 mm x 0.3 mm. Therefore, electronic component packages, lids, seam rings, crystal fragments, etc. that make up these components However, it will be difficult to recognize with human eyes. Therefore, the suction nozzle that sucks and holds them is also thin and thin like a needle or a thin plate (see Patent Document 1).

JP 2010-89165 A

  As already mentioned, handling is difficult when the size of various components is minimized. For example, when the strength and rigidity of a component are lowered, it is no longer difficult to hold the component with a clamping mechanism such as a chuck.

  Therefore, when handling a component with a negative pressure by a suction nozzle, a suction force locally acts on a region corresponding to the negative pressure hole in the component, and this suction force may adversely affect the component. Further, for example, when the size of the negative pressure hole formed in the nozzle is about 0.1 mm to 0.3 mm, the negative pressure hole is clogged only by sucking dust or dust, and regular maintenance is required. Furthermore, as the negative pressure hole becomes smaller, it becomes difficult to manufacture the nozzle itself, and at the same time, the strength and rigidity of the nozzle decrease. Moreover, since piping for supplying negative pressure air to the suction nozzle is required, there is a problem that the structure of the component conveying device is complicated.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a component conveying apparatus that can safely and reliably convey even a small component.

  Through the diligent research of the present inventors, at least a part of the above problems can be achieved by the following means.

That is, the present means for solving the above-mentioned problem is that the parts supplied in the carry-in area are sucked and held by the sucking head, and the sucking head is moved by the transport mechanism, thereby transporting the parts to the unloading area. The suction head opens the component, and the suction head includes an electromagnet in which a coil is wound around a core of a magnetic material to generate a magnetic force at an end of the core, and the core A component holding part that is formed in the vicinity of the end of the body and that attracts the component by the magnetic force, and the energization control device controls the energization state of the coil of the attraction head, thereby switching the adsorption and release of the component by the component holder, the core body of the suction head has a yoke made of a U-shape, a pair of the component holder is, at both ends of the yoke Made is, by a pair of the component holder, the component is characterized in that it is held by suction, a part transfer apparatus.
In relation to the above invention, the component is supplied in an inclined state, and one component holding portion is brought into contact with the high position of the component, and the low position of the component is moved by the other component holding portion. It is characterized by sucking up.
In relation to the above invention, the component is a weld ring disposed between the lid and the electronic component package.
Further, the present means for solving the above-mentioned problem is that the parts supplied in the carry-in area are sucked and held by the suction head, and the suction head is moved by the transport mechanism, thereby transporting the parts to the carry-out area, and the carry-out area. The suction head opens the component, and the suction head includes an electromagnet in which a coil is wound around a core of a magnetic material to generate a magnetic force at an end of the core, and the core A component holding part that is formed in the vicinity of the end of the body and that attracts the component by the magnetic force, and the energization control device controls the energization state of the coil of the attraction head, thereby Switching between sucking and opening of the component by the component holding unit, the component is a welding ring disposed between a lid and an electronic component package, and the sucking head includes the square welding ring. Characterized in that it comprises a pair of part holders comprising a shape along one of opposite sides of the grayed a component transfer apparatus.
In relation to the above invention, the core of the suction head is a U-shaped yoke, and the pair of component holding portions are formed at both ends of the yoke, and the pair of the component holding portions The parts are sucked and held.
In relation to the above invention, the energization control device attracts and holds the component by energizing the coil with current after the component and the component holding portion of the suction head abut in the carry-in area. It is characterized by doing .

  In connection with the above invention, the energization control device energizes the coil with a direct current in one direction during conveyance to attract and hold the component, and energizes the direct current in the other direction in the carry-out area. The part is opened.

  In relation to the above-described invention, the energization control device energizes the current in one direction and the other direction a plurality of times until the suction head returns from the carry-out area to the carry-in area, thereby holding the component. The portion is demagnetized.

  In relation to the above invention, the transport mechanism is configured to move the plurality of suction heads in a ring shape, and the carry-in area and the carry-out area are arranged in the middle of the annular movement locus of the suction head. It is characterized by being.

  In relation to the above-described invention, a component supply device that supplies the components is disposed in the carry-in area, and the component supply device includes a supply rail that supplies the components in a line, and a supply rail in the supply rail. A fixing mechanism for fixing a component adjacent to the upstream side of the most downstream component.

  In connection with the said invention, the said fixing mechanism is provided with the negative pressure hole which is formed in the said supply rail and attracts and fixes the said components.

Further, the present means for solving the above-mentioned problem is that the parts supplied in the carry-in area are sucked and held by the suction head, and the suction head is moved by the transport mechanism, thereby transporting the parts to the carry-out area, and the carry-out area. The suction head opens the component, and the suction head includes an electromagnet in which a coil is wound around a core of a magnetic material to generate a magnetic force at an end of the core, and the core A component holding part that is formed in the vicinity of the end of the body and that attracts the component by the magnetic force, and the energization control device controls the energization state of the coil of the attraction head, thereby switching the adsorption and release of the component by the component holder, the core body of the suction head has a yoke made of a U-shape, a pair of the component holder is, at both ends of the yoke Made is, by a pair of the component holder, the component is characterized in that it is held by suction, a part conveying process.
Further, in the present application for solving the above-described problem, the parts supplied in the carry-in area are sucked and held by the suction head, and the suction head is moved by the transport mechanism, so that the parts are transported to the carry-out area. The suction head opens the component, and the suction head includes an electromagnet in which a coil is wound around a core of a magnetic material to generate a magnetic force at an end of the core, and the core A component holding part that is formed in the vicinity of the end of the body and that attracts the component by the magnetic force, and the energization control device controls the energization state of the coil of the attraction head, thereby Switching between sucking and opening of the component by the component holding unit, the component is a welding ring disposed between a lid and an electronic component package, and the sucking head includes the square welding ring. Characterized in that it comprises a pair of part holders comprising a shape along one of opposite sides of the grayed a component transporting method.

  According to the present invention, even a small part can be safely and reliably conveyed as long as it is a material attracted by magnetic force.

It is a top view of the conveying apparatus and tacking apparatus which concern on embodiment of this invention. It is a front view of the conveyance apparatus and a tacking apparatus. It is the (A) front view which expands and shows the adsorption head of the conveyance device, (B) sectional view seen from the front, and (C) side view. (A) is a side view showing the suction head and the supply rail of the transport device in an enlarged manner, (B) is a top view thereof, (C) is a cross-sectional view of the supply rail, and (D) is the suction of the welding ring by the suction head. FIG. 6E is a front view showing a state immediately before, and FIG. 8E is a front view showing a state immediately after the welding ring is sucked by the suction head. (A)-(C) are the bottom views which looked at the adsorption head and the welding ring of the conveyance apparatus from the lower side. It is the (A) front view and (B) side view of a coating device. It is a top view of a coating device. It is a timing chart which shows the current applied to a coil by a control device. (A) And (B) is a figure which shows the temporary attachment operation | movement of a welding ring. It is a figure which shows an inkjet type coating device. It is a perspective view which shows a welding ring and a ceramic container.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  First, the overall configuration of the component transport apparatus 400 according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. In addition, the components conveying apparatus 400 of this embodiment illustrates the case where the welding ring 30 is conveyed as components. The component conveying device 400 temporarily attaches the weld ring 30 to the electronic component package, and the entire device including these peripheral devices functions as the weld ring temporary attachment device 1. It has become. As shown in FIG. 11, in this embodiment, a welding ring 30 is temporarily attached to a ceramic substrate 18 in which a plurality of ceramic containers 20 are integrally formed in a matrix.

  In the component conveying device 400, the welding ring supply device 50 that supplies the welding ring 30 is disposed in the carry-in area, and the ceramic container 20 on which the welding ring 30 is placed is disposed in the carry-out area. In the carry-out area, a positioning device 80 for positioning and conveying the ceramic container 20 and a magazine 90 for supplying and collecting the ceramic container 20 are further arranged.

  In the part conveyance device 400, in the middle of the annular conveyance path from the carry-in area to the carry-out area, a first lower imaging device 650 for confirming the holding state of the welding ring 30 before applying the paste material, An applicator 600 for applying the glue material N to the welding ring 30 and a first method for confirming the holding state of the weld ring 30 and the application state of the glue material N during transportation and after application of the glue material N from below by camera photography. (2) The lower imaging device 700 and the upper imaging device 800 for confirming the position of the ceramic container 20 from above by camera photography are arranged. Further downstream of the carry-out area, a disposal case 900 that discards the defective welding ring 30 and a cleaning device 950 that periodically cleans the component holding surface of the suction head 100 are disposed. The cleaning device 950 is a cleaning surface formed by fibers, a grindstone, or the like, and comes into contact with the tip of the suction head 100 to periodically wipe the adhered glue material N. In addition, the component conveying device 400 includes a control device 1000 that performs operations of the motor 320 and the holding mechanism 120 and energization control for the coils of the welding head 100.

  The component conveying device 400 includes a disk-shaped rotary table 300 and a holding mechanism 120 disposed on the outer periphery thereof in the circumferential direction. The holding mechanism 120 includes the suction head 100 and sucks and holds the welding ring 30 by magnetic force. The rotary table 300 is freely rotatable by the motor 320, and thereby, the holding mechanism 120 arranged on the rotary table 300 is moved along an annular locus. In the present embodiment, 16 holding mechanisms 120 are arranged in the circumferential direction with respect to the rotary table 300, but this number is not particularly limited. However, it is preferable that at least three holding mechanisms 120 are provided. More desirably, five or more are provided.

  In the present embodiment, a turret mechanism using the rotary table 300 is illustrated as the structure of the component conveying device 400. However, the present invention is not limited to this, and a linear motion mechanism that reciprocates on a linear motion rail, for example. May be used.

  The suction head 100 in the holding mechanism 120 is movable and rotatable in the vertical direction. Various moving structures of the suction head 100 can be employed. For example, the vertical direction can be moved by an air cylinder or the like, and the rotation direction can be a motor or the like. In addition, for example, a ball screw mechanism or a rack and pinion mechanism using a screw shaft and a nut may be used in the vertical direction.

  The welding ring supply device 50 is a so-called bowl feeder, stores a large amount of the welding ring 30, aligns the welding ring 30 in a line along the supply rail 52, and supplies the welding ring 30 to the component conveying device 400. The holding mechanism 120 in the component conveying device 400 sucks and holds the supplied welding ring 30 by moving the suction head 100 in the vertical direction.

  Further, here, the case of supplying with a bowl feeder has been illustrated, but the present invention is not limited to this, and the welding ring is supplied by using a supply rail in which the welding rings are arranged and arranged in advance, an alignment tray, or a table. The structure may be such that individual weld rings are picked up by image recognition from a supply table in which the weld rings are randomly scattered above. In addition, when picking up a welded ring in a dispersed state, an independent weld ring that is not approaching the surrounding weld ring is searched for by image recognition and set as a holding target. This is to prevent the plurality of weld rings from being attracted together by the magnetic force.

  3A to 3C show the suction head 100 in an enlarged manner. The suction head 100 is fixed to the rotating shaft 122 of the holding mechanism 120. The suction head 100 includes a core body 102 made of a magnetic material, a coil 110 wound around the core body 102, and a pair of component holding portions 108 formed at end portions of the core body 102. When a current is passed through the coil 110, a magnetic force is generated in the core body 102.

  The core body 102 includes a basic bar 102A around which the coil 110 is wound, and a pair of parallel bars 102B extending in parallel to a direction perpendicular to the axis of the basic bar 102A (part direction) at both ends of the basic bar 102A. Accordingly, the core body 102 has a yoke shape that is U-shaped as a whole. Due to this yoke shape, both ends of the core body 102 approach each other. When a current is passed through the coil 110, the core body 102 and the coil 110 act as electromagnets, so that both ends become S and N poles, and a strong magnetic field can be generated between both ends.

  The pair of component holding portions 108 are disposed at both ends of the core body 102, that is, at the lower ends of the parallel bars 102 </ b> B, and provide holding surfaces 108 </ b> A that come into contact with the welding ring 30. Specifically, the member protrudes further downward from the lower end of the parallel bar 102 </ b> B, and the lower end thereof serves as the holding surface 108 </ b> A of the welding ring 30. In the present embodiment, the component holder 108 itself is also made of a magnetic material, and a magnetic force is generated in a state of being completely integrated with the yoke.

  FIG. 4A shows the structure of the supply rail 52 in an enlarged manner. The supply rail 52 is formed with a belt-shaped guide surface 52A for guiding the welding ring 30. The guide surface 52A is an inclined surface that is low in the width direction and high in the other direction. A stepped portion 52B for preventing the welding ring 30 from dropping is formed at the lower edge of the guide surface 52A. The protruding amount (height) of the stepped portion 52B is lower than the height of the welding ring 30. Therefore, as shown in FIG. 4C, the welding ring 30 is supplied in an inclined posture along the interplanar surface 52A. Therefore, even if the two welding rings 30 are transported in a state of being overlapped, the upper welding ring 30 cannot be engaged with the stepped portion 52 </ b> B on the way, and thus falls naturally from the supply rail 52.

  Further, the supply rail 52 includes a fixing mechanism 56 that fixes the welding ring 30 adjacent to the upstream side of the most downstream welding ring 30 to be held. The fixing mechanism 56 is a pair of negative pressure holes 54 formed on the bottom surface of the supply rail 52, and the welding ring 30 is fixed to the supply rail 52 by sucking the bottom surface side of the welding ring 30. When the suction head 100 holds the welding ring 30 on the most downstream side with a magnetic force, negative pressure is temporarily supplied to the negative pressure hole 54 to fix the welding ring 30 adjacent to the upstream side to the supply rail 52. As a result, the upstream side weld ring 30 is prevented from being lifted together with the most downstream weld ring 30 by the magnetic force of the suction head 100. Here, the case where the welding ring 30 is fixed by the negative pressure hole 54 is illustrated as the fixing mechanism 56, but the present invention is not limited to this, and the welding ring 30 is sandwiched by a dedicated jig, a protrusion, a lid, etc. It is also possible to engage with the welding ring 30 and fix it.

  4D and 4E show a state immediately before and immediately after the suction head 100 holds the welding ring 30 with a magnetic force. As shown in FIG. 4D, when the suction head 100 is lowered by supplying the welding ring 30 in an inclined state, one of the pair of holding surfaces 108 </ b> A is placed on the higher part of the welding ring 30. Contact. As a result, since the magnetic field generated between the pair of component holding portions 108 passes through the inside of the weld ring 30 that is inclined as indicated by the arrow X, the lower portion of the weld ring 30 and A suction force is generated between the other holding surface 108A. As a result, as shown in FIG. 4E, the lower portion of the welding ring 30 is sucked upward, and the welding ring 30 is held by the suction head 100. In this way, due to the synergistic effect of the idea of conveying the welding ring 30 at an angle and the idea of making the suction head 100 a yoke structure, one of the yokes is brought into contact with a high portion of the welding ring 30 and the other of the yokes is welded. By sucking up the low part of 30, it is possible to hold it more reliably.

  FIG. 5A shows a state in which the welding ring 30 and the suction head 100 are viewed from below. Here, a state in which the paste material N is applied to one opposite side of the welding ring 30 is shown. In addition, here, a holding surface 108A of the component holding portion 108 that comes into contact with the welding ring 30 is also shown. Each of the pair of holding surfaces 108A has a rectangular shape, and their longitudinal directions are parallel to each other. The longitudinal direction of the pair of holding surfaces 108 </ b> A is along one opposite side 30 </ b> A of the welding ring 30. The distance L1 between the centers of the pair of holding surfaces 108A coincides with the distance TA of one side 30A of the welding ring 30.

  The length L2 in the longitudinal direction of each holding surface 108A is smaller than the distance TB of the other opposite side 30B of the welding ring 30. Thus, by making the length L2 smaller than the outer shape of the weld ring 30, the probability that the paste material N applied to the weld ring 30 adheres to the holding surface 108A is reduced.

  The width of each holding surface 108A is set to be approximately the same as or larger than the width of one opposite side 30A. A gap S is formed between the pair of holding surfaces 108A to avoid interference with a coating roller 610 of the coating device 600 described later.

  As a result of the configuration of the holding surface 108A of the component holding portion 108 as described above, the pair of holding surfaces 108A can be brought into contact with one opposite side 30A of the welding ring 30. Therefore, if a magnetic force is applied to the component holding portion 108, the welding ring 30 serving as a magnetic body is attracted and held on the holding surface 108A.

  Although the case where the holding surface 108A is disposed along the opposite side 30A of the welding ring 30 is illustrated here, for example, the longitudinal direction of the holding surface 108A is inclined with respect to the welding ring 30 as shown in FIG. Thereby, the diagonal part of the welding ring 30 can also be adsorbed. For example, as shown in FIG. 5C, the longitudinal direction of the welding ring 30 on the pair of holding surfaces 108A is parallel to the other opposite side 30B, and the pair of holding surfaces 108A are further connected to the other opposite side 30B. Can also be placed inside. In this way, one opposite side 30A of the welding ring 30 can be sucked and held near both ends of the pair of holding surfaces 108A. Although the case where the core body 102 has a yoke structure and the pair of holding surfaces 108A are brought into contact with the welding ring 30 is illustrated here, the present invention is not limited to this. For example, a single holding surface through which the lines of magnetic force pass can be brought into contact with the welding ring 30 and adsorbed. The shape and quantity of the component holding part 108 are not particularly limited to this embodiment.

  Returning to FIG. 1 and FIG. 2, the ceramic substrate 18 is disposed on the carrier 550, and the carrier 550 and the ceramic substrate 18 are accommodated together in the magazine 90. The positioning device 80 is a so-called XY table device, takes out the carrier 550 (ceramic substrate 18) from the magazine 90, and positions the carrier 550 in the XY direction in the carry-out area of the component conveying device 400. An upper imaging device 800 is arranged vertically above the component conveying device 400, and the lower ceramic substrate 18 is imaged using a timing at which the holding mechanism 120 does not exist immediately below. Check the position on the image. Using this information, the positioning device 80 moves the ceramic container 20 on which the welding ring 30 is not mounted directly below the holding mechanism 120. As a result, the suction head 100 can be accurately placed on the ceramic container 20 intended for the weld ring 30 held by suction.

  In the middle of the movement trajectory of the welding ring 30 in the component conveying device 400, the first and second lower imaging devices 650 and 700 are arranged. The first lower imaging device 650 checks the holding state of the welding ring 30 before applying the paste N. For example, when the welding ring 30 is not held, the application operation of the paste material N by the application device 600 is prohibited. Further, when the holding angle of the welding ring 30 is deviated, the adhesive material N is applied after the suction head 100 is rotated as necessary. Further, when the holding posture of the welding ring 30 is so bad that it cannot be corrected, the welding ring 30 is discarded in the disposal case 900 without applying the paste material N or mounting it on the ceramic container 20 in a subsequent process.

  In addition, the second lower imaging device 700 acquires coordinate information (also referred to as position information) of the welding ring 30 in a state of being sucked by the suction head 100, and uses the coordinate information as the component conveying device 400. The data is transmitted to the control device 1000 that controls the positioning device 80.

  The component conveying device 400 rotates the suction head 100 based on the received coordinate information. As a result, the angle with respect to the ceramic container 20 placed on the carrier 550 is adjusted. The positioning device 80 adjusts the position of the ceramic container 20 in the XY direction based on the received coordinate information. Note that the lower imaging apparatus 700 can also check the application state of the paste material N to the welding ring 30. In order to make it easy to confirm the image of the application state of the adhesive material N to the welding ring 30, it is preferable to make the welding ring 30 and the adhesive material N different colors, or to make the light reflectance different from each other. If there is an error that cannot be corrected in the holding posture of the welding ring 30 or the application state of the glue material N, the welding ring 30 is discarded in the disposal case 900 without performing the mounting operation on the ceramic container 20 in a subsequent process.

  6 and 7 show the coating apparatus 600 in an enlarged manner. The coating device 600 applies the paste material N to the central portion of the other opposite side 30B of the welding ring 30. That is, the paste material N is applied to the other opposite side 30B different from the other side 30A while holding one side 30A of the welding ring 30 by the pair of holding surfaces 108A of the suction head 100. As a result, the position of the holding surface 108A and the application position of the glue material N are shifted, so that the number of times that the glue material N adheres to the holding surface 108A and maintenance has to be performed can be reduced.

  Specifically, the coating device 600 includes a coating roller 610 having a rotation shaft 608, a paste material container 620 in which the paste material N is stored, a driving device (motor) 630 that rotates the coating roller 610, and a coating roller 610. A film thickness adjusting mechanism 616 that equalizes the film thickness of the paste material N held by the roller, a roller holding mechanism 640 that holds the application roller 610 rotatably and detachably, a base 646 that holds these, and a base 646 Is provided in a plane direction (XY direction). The rotation shaft 608 of the application roller 610 is provided with a gear 609 serving as a transmission mechanism. A gear 632 is similarly provided on the output shaft of the driving device 630. Accordingly, the power of the driving device 630 is transmitted to the rotating shaft 608 via the pair of gears 632 and 609.

  The roller holding mechanism 640 includes a pair of backup rollers 641 that are rotatably disposed on the base 646. The pair of backup rollers 641 are disposed in the vicinity of both ends of the application roller 610 in the axial direction. As shown in FIG. 7, the pair of backup rollers 641 abut on two places in the circumferential direction of the rotation shaft 608 below the rotation shaft 608 of the application roller 610. Accordingly, the rotation shaft 608 of the application roller 610 is held on the pair of backup rollers 641 so as to be rotatable by its own weight. Further, when the application roller 610 is placed on the pair of backup rollers 641, the gears 632 and 609 are naturally positioned so as to mesh with each other. As a result, the application roller 610 is detachably held by the roller holding mechanism 640, and can be easily replaced simply by lifting the application roller 610 upward.

  As shown in FIG. 7A, the application roller 610 provides an annular application surface 610A by its outer peripheral surface. The width of the application surface 610A is set to be smaller than the length of the other opposite side 30B of the weld ring 30, and the longitudinal direction of the application surface 610A is perpendicular to the other opposite side 30B of the weld ring 30. It has become. In other words, the rotation shaft 608 of the application roller 610 is parallel to the other side 30 </ b> B of the welding ring 30. As a result, as shown in FIG. 7B, one application surface 610 </ b> A simultaneously contacts the central portion of the other opposite side 30 </ b> B of the welding ring 30 to apply the paste material N. In this case, the uppermost part of the application surface 610 </ b> A is higher than the bottom surface of the welding ring 30. As described above, the width of the application surface 610A is set to be significantly smaller than the length of the other side 30B of the welding ring 30, so that the welding ring 30 is provided on both outer sides of the application surface 610A of the application roller 610. A pair of clearance spaces 612 is formed to avoid interference with one opposite side 30A. That is, the relief space 612 causes the application surface 610A to be separated from one side 30A that the suction head 100 sucks, so that the glue material N adheres to the other side 30A wastefully, and further, the suction head Or sticking to 100.

  The lower side of application surface 610A is immersed in glue material N stored in glue material container 620. As a result, the application surface 610A holds the paste material N on the surface.

  As shown in FIG. 8, the film thickness adjusting mechanism 616 is a plate member that is arranged with a gap T corresponding to the set film thickness with respect to the application surface 610 </ b> A of the application roller 610. Therefore, when the glue material N adhering to the pair of application surfaces 610A passes through the gap T of the film thickness adjusting mechanism 610, the excess glue material N falls into the glue material container 620. As a result, the film thickness of the paste material N on the application surface 610A is constant. In the present embodiment, the plate member of the film thickness adjusting mechanism 616 also faces the side surfaces 610B formed on both sides of the application surface 610A. As a result, the unnecessary glue material N attached to the side surface 610B is also removed, so that the film thickness of the glue material N on the application surface 610A can be stabilized.

  Returning to FIG. 7B, when the application roller 610 and the welding ring 30 are brought into contact with each other, the paste material N is applied to the welding ring 30. The driving device 630 intermittently rotates the application roller 610 by a certain angle every time the paste material N is applied to the welding ring 30. As a result, a new paste material N is always supplied to the application surface 610 </ b> A in contact with the next welding ring 30.

  In this way, by using the application roller 610, the paste material N is transferred to a part of the narrow region of the opposite side 30B of the welding ring 30, thereby reducing the bonding force between the welding ring 30 and the application roller 610 at the time of transfer. Therefore, there is an advantage that the trouble that the welding ring 30 falls off from the holding surface 108 of the suction head 100 can be suppressed during application.

  In particular, according to the coating apparatus 600 of the present embodiment, the paste material N is applied by simultaneously bringing two portions of the partial arc of one coating roller 610 into contact with the opposite side 30B. As a result, even if the size of the weld ring 30 is changed, the paste material N can be applied using the application roller 610 without any change. As a result, it is possible to reduce the replacement work of the application roller 610 accompanying the size change.

  Although details will be described later, in this embodiment, the probability of the welding ring 30 falling off the suction head 100 by increasing the current flowing through the coil 110 of the suction head 100 and increasing the magnetic force when applying the paste N. Is further reduced. When the welding ring 30 is held by the negative pressure of air by the suction nozzle as in the prior art, it is mechanically complicated to control the level of the negative pressure freely during the conveyance. On the other hand, when the welding ring 30 is held by magnetic force as in the present embodiment, the holding force can be freely controlled during the conveyance by the current control of the coil 110 by the control device 1000.

  In addition, although the case where the welding roller 610 supplies one application surface 610A is illustrated here, the present invention is not limited to this. For example, a pair of application surfaces 610 </ b> A may be provided by two independent welding rollers 610, and each may apply the paste material N to the opposite side 30 </ b> B of the welding ring 30.

  Next, the conveyance method of the welding ring 30 by the component conveyance apparatus 400 is demonstrated using FIG. FIG. 8 is a timing chart showing a control state of a current to be supplied to the coil 110 at the same time that one suction head 100 is rotated once together with the rotary table 300 in the control device 1000. The control device 100 can also switch the suction and release of the welding ring 30 by the component holding unit 108 of the suction head 100 by controlling the energization state of the coil 110 of the suction head 100.

  First, as a component holding process at timing A, in the carry-in area where the welding ring supply device 50 is arranged, the suction head 100 is lowered and brought into contact with the welding ring 30, and then a positive DC current is applied to the coil 110. Is started, the welding ring 30 is sucked and held by the holding member 108, and then the suction head 100 is raised. Note that if the coil 110 is energized in advance before the suction head 100 contacts the welding ring 30, the welding ring 30 is lifted by the magnetic force of the holding member 108, and the holding posture is not stable.

  Thereafter, in the transport process in period B, the welding ring 30 picked up by the suction head 100 is transported while maintaining a direct current in one direction (here, a positive direction) with respect to the coil 110.

  Next, in the glue material application process at timing C, the suction head 100 is lowered and the welding ring 30 is brought into contact with the welding roller 610 of the application device 600 to apply the glue material N. At this timing C, the current value of the DC current in one direction (plus direction) is temporarily increased before application to increase the holding force of the welding ring 30. As a result, the trouble that the welding ring 30 falls off the suction head 100 and the welding ring 30 remains on the welding roller 610 side is prevented. Thereafter, the suction head 100 is raised again, and the current value is returned to the same positive DC current value as in the period C. In this way, the magnetizing of the suction head 100 is suppressed by making the magnetic field being conveyed as weak as possible.

  Then, in the conveyance process of the period D, the welding ring 30 to which the paste material N is applied is conveyed to the carry-out area.

  Next, in the mounting process at the timing E, the suction head 100 is lowered to bring the welding ring 30 into contact with the ceramic container 20 arranged in the carry-out area. At this time, after the welding ring 30 comes into contact with the ceramic container 20, energization of a negative direct current to the coil 110 is started. As a result, since the magnetic force in the opposite direction acts on the welding ring 30 that has received a positive direct current magnetic force during conveyance, the welding ring 30 is released so as to repel the suction head 100. If a DC current in the opposite direction is previously applied to the coil 110 before the welding ring 30 contacts the ceramic container 20, the welding ring 30 is released halfway by the magnetic force of the holding member 108, and the ceramic container. It becomes difficult to mount the welding ring 30 at 20 accurate positions. Thereafter, when the suction head 100 is raised, the welding ring 30 remains in the ceramic container 30 and the mounting process is completed.

  Thereafter, in the degaussing process (returning process) in period F, the suction head 100 is moved (returned) from the carry-out area to the carry-in area. In addition, since the component conveying apparatus 400 of this embodiment is what is called a turret structure, while the suction head 100 is returning in the period F, other suction heads may continue the operations A to E. it can. That is, the return time of the suction head 100 during the period F can be sufficiently secured without reducing the conveyance efficiency. In this period F, the current in one direction (plus) and the other direction (minus) is gradually attenuated while being energized a plurality of times to demagnetize the residual magnetic field remaining in the suction head 100 (component holding unit 108). . In this way, the suction head 100 is also returned to the initial state (the state in which no magnetization is applied) using the period F.

  Next, a method for temporarily attaching the weld ring 30 to the electronic component package by the weld ring tacking device 1 will be described with reference to FIG.

  In FIG. 9A, the rotary table 300 in the component conveying apparatus 400 is temporarily stopped, and the following seven operations are simultaneously performed during the stop. (1) The operation of holding the welding ring 30 of the welding ring supply device 50 by the suction head 100 by the holding mechanism 120-1. (2) An operation of confirming the holding posture of the welding ring 30 by the first imaging device 650 by the holding mechanism 120-3. (3) The operation | movement which apply | coats a paste material with the coating device 600 with respect to the welding ring 30 hold | maintained with the holding mechanism 120-4. (4) The operation of confirming the holding posture of the welding ring 30 after applying the paste by the second imaging device 700 by the holding mechanism 120-6. (5) The operation of mounting the welding ring 30 after applying the paste material on the ceramic container 20 by the holding mechanism 120-9. (6) The operation of discarding the unusable welding ring 30 in the disposal case 900 by the holding mechanism 120-13. (7) The operation of cleaning the front end surface 102 of the suction head 100 by the holding mechanism 120-14.

  On the other hand, FIG. 9B shows a state in which the turntable 300 of the component conveying device 400 is rotating, and during that time, the upper imaging device 800 is utilized using a space where the holding mechanism 120 does not exist. Image the position of the lower ceramic container 20 to position the ceramic container 20. By repeating the operations shown in FIGS. 9A and 9B, the welding ring 30 can be temporarily attached to the ceramic container 20 at a very high speed.

  As described above, according to the component conveying device 400 of the present embodiment, the core body 102 and the coil 110 in the suction head 100 function as an electromagnet. The welding ring 30 is sucked and conveyed by the component holding portion 108 formed in the vicinity of the end portion of the core body. At this time, by controlling the energization state of the coil 110 of the suction head 100 by the control device 1000, the suction and release of the welding ring 30 can be easily switched. Further, the magnetic ring acts on the entire welding ring 30 by abutting against the component holding portion 108 and holding the welding ring 30 by the magnetic force, so that the welding ring 30 is locally applied like the conventional negative pressure hole. Compared with the case where a suction force is applied, stress that acts intensively on a part of the weld ring 30 can be reduced.

  In particular, the control device 1000 sucks and holds the welding ring 30 by energizing the coil 110 after the welding ring 30 and the component holding portion 108 of the suction head 100 abut in the carry-in region. As a result, it is possible to prevent the welding ring 30 from being sucked up by the magnetic force before the welding ring 30 and the suction head 100 abut. As a result, the holding posture of the welding ring 30 in the suction head 100 can be stabilized.

  Further, the control device 1000 positively releases the welding ring 30 by energizing a direct current in a direction opposite to the current being conveyed in the carry-out region. Therefore, the trouble that the welding ring 30 remains in the suction head 100 in the carry-out area can be suppressed.

  Furthermore, the control device 1000 energizes the coil 110 a plurality of times while gradually attenuating the current in one direction and the other direction until the suction head 100 is returned from the carry-out area to the carry-in area. By doing so, the magnetism remaining in the core body 102 and the component holding part 108 is demagnetized. Therefore, the trouble that the welding ring 30 is sucked up at the next suction is suppressed.

  In the present embodiment, the plurality of suction heads 100 are moved in an annular shape by a turret-structured transport mechanism, and the carry-in area and the carry-out area are arranged in the middle of the annular movement locus of the suction head 100. ing. Therefore, it is possible to secure a time for the welding head 100 to return from the carry-out area to the carry-in area while improving the carrying efficiency by carrying in and carrying out simultaneously. Therefore, it is possible to ensure the demagnetization time of the welding head 100 described above. Specifically, although it depends on the rotational speed of the turret, the range from the carry-in area to the carry-out area is set to a phase interval of 330 degrees or less with respect to the annular movement trajectory in the suction head 100 to demagnetize. It is preferable to secure a phase interval of at least about 30 degrees. Preferably, a phase interval for demagnetization is secured about 90 degrees.

  In the present embodiment, the core body 102 of the suction head 100 has a yoke structure, and a pair of component holding portions 108 is formed at the tip of the yoke, and the welding ring 30 is sucked and held by the pair of component holding portions 108. Is done. Therefore, this yoke structure makes it possible to increase the magnetic force with respect to the two holding surfaces 108A, so that the holding posture of the welding ring 30 is stabilized. Further, in the component supply device (welding ring supply device 50) arranged in the carry-in area, the supply rail 52 supplies the welding ring 30 in an aligned manner, and the upstream of the most downstream welding ring 30 in the supply rail 52. The welding ring 30 adjacent to the side is fixed by a fixing mechanism 56. As a result, when the suction head 100 sucks and holds the welding ring 30 by its own magnetic force, the trouble that the welding ring 30 adjacent to the upstream side is sucked together by the suction head 100 can be suppressed.

  In the present embodiment, the case where the welding ring 30 disposed between the lid (lid) and the electronic component package (ceramic container) 20 is conveyed as an example is illustrated, but the present invention is not limited to this. Any component that can be attracted by magnetic force can be transported.

  Moreover, according to the temporary attachment method of this embodiment, since there is no process of applying the paste material N to the ceramic container 20, the operation of applying the paste material to the welding ring 30 with the coating device 600, and after applying the paste material The operation of mounting the welding ring 30 on the ceramic container 20 can be performed in parallel. As a result, the tacking speed (tact time) of the welding ring 30 can be significantly improved. By the way, when applying the paste material N to the ceramic container 20 side, the application position is confirmed with a camera, the paste material N is applied accurately, and the attitude of the welding ring to be conveyed and the fineness on the ceramic container 20 are also applied. It is difficult to increase the mounting tact time because it is necessary to accurately mount the welding ring of the thin line while positioning the application position of the dot-like glue material with high accuracy by collating both image processes.

  Moreover, in this embodiment, in the conveyance process which hold | maintains the welding ring 30 supplied and conveys to the ceramic container 20, since a paste material can be apply | coated to the weld ring 30 just before mounting, drying of the paste material at the time of mounting is suppressed. The As a result, the welding ring 30 can be securely attached. If the line stops due to some trouble after the glue material is applied to the welding ring 30, only the welding ring 30 can be discarded in the disposal case 900. This eliminates the need for disposal and increases the production yield. In particular, when the welding head 100 using an electromagnet is used as in the present conveying device 400, the magnetic force (adsorptive power) can be increased only when the paste material is applied to the welding ring 30 by simple control of the current. Moreover, the trouble that the welding ring 30 remains on the coating device 600 side can also be suppressed.

  Furthermore, in the present embodiment, since the paste material is applied to one opposite side or one diagonal portion of the welding ring 30 in the application process, the application is performed as compared with the case where the adhesive material is applied to the entire surface of the ceramic container 20. The amount can be greatly reduced. In particular, in the present embodiment, since the other opposite side or the other diagonal portion of the welding ring 30 is held by the suction head 100, the holding position of the suction head 100 and the paste application position are different. As a result, it is possible to simultaneously suppress the problem that the glue material applied with great effort adheres to the suction head 100 and thereby adheres the suction head 100 and the welding ring 30.

  In the present embodiment, the case where the paste material N is applied to the welding ring 30 by the application roller 610 is illustrated, but the present invention is not limited to this. For example, like the coating apparatus 600 shown in FIG. 10, it is also preferable to apply the paste material N to the welding ring 30 by a so-called inkjet structure. Specifically, the coating apparatus 600 provides a coating nozzle 680 that discharges the paste material N, a supply device 620 that supplies the paste material N to the coating nozzle 680, and a discharge pressure of the paste material N to the coating nozzle 680. A positive pressure device 690 is provided. The positive pressure device 690 is, for example, a piezoelectric actuator, and instantaneously increases the internal pressure of the paste material supply path 680a in the application nozzle 680 by its own vibration. As a result, the paste material N is applied to the weld ring 30 by being discharged toward the weld ring 30. As shown in FIG. 10 (A), first, the paste material N is applied to one of the opposite sides or the opposite corners of the weld ring 30, and then the weld ring 30 is rotated as shown in FIG. 10 (B). Thus, the paste material N can be applied to the other of the opposite side or the opposite side. Of course, the paste material N may be applied to a plurality of locations of the welding ring 30 by moving the application device 600 side. When the ink jet structure is employed as described above, the paste material N can be freely applied to any plurality of locations in the welding ring 30.

  In the present embodiment, the material of the paste material applied to the welding ring 30 is not particularly limited. For example, it may be a chemical material that volatilizes completely by a subsequent heating step, or may be a paste material containing a conductor such as metal, such as a conductive paste.

  The parts conveying device and the welding ring temporary attachment method of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. .

  The present invention can be widely used in the field of manufacturing electronic components.

DESCRIPTION OF SYMBOLS 1 Temporary attachment apparatus 20 Ceramic container 30 Welding ring 50 Welding ring supply apparatus 80 Positioning apparatus 90 Magazine 100 Adsorption head 102 Core body 108 Parts holding part 110 Coil 120 Holding mechanism 300 Rotary table 400 Conveying apparatus 600 Application | coating apparatus 650 1st lower side imaging Device 700 Second lower imaging device 800 Upper imaging device 900 Disposal case 950 Cleaning device 1000 Control device

Claims (13)

  A component that sucks and holds a component supplied in a carry-in area by a suction head, moves the suction head by a transport mechanism, transports the component to a carry-out region, and the suction head opens the component in the carry-out region A conveying device,
  The suction head is
  An electromagnet in which a coil is wound around a core of a magnetic material to generate a magnetic force at an end of the core;
  A component holding part that is formed in the vicinity of the end of the core body and that attracts the component by the magnetic force;
  By controlling the energization state of the coil of the suction head by an energization control device, switching between suction and release of the component by the component holding part of the suction head,
  The core of the suction head is a U-shaped yoke,
  A pair of the component holding portions are formed at both ends of the yoke,
  The component is sucked and held by a pair of the component holding portions,
  Parts transport device.   The parts are supplied in an inclined state;
  One of the component holding portions is brought into contact with the high position of the component, and the low position of the component is sucked up by the other component holding portion.
  The component conveying apparatus according to claim 1.   The component is a weld ring disposed between a lid and an electronic component package,
  The component conveying apparatus according to claim 1 or 2.   A component that sucks and holds a component supplied in a carry-in area by a suction head, moves the suction head by a transport mechanism, transports the component to a carry-out region, and the suction head opens the component in the carry-out region A conveying device,
  The suction head is
  An electromagnet in which a coil is wound around a core of a magnetic material to generate a magnetic force at an end of the core;
  A component holding part that is formed in the vicinity of the end of the core body and that attracts the component by the magnetic force;
  By controlling the energization state of the coil of the suction head by an energization control device, switching between suction and release of the component by the component holding part of the suction head,
  The component is a weld ring disposed between the lid and the electronic component package;
  The suction head includes a pair of the component holding portions having a shape along one opposite side of the square welding ring,
  Parts transport device. The core of the suction head is a U-shaped yoke,
A pair of the component holding portions are formed at both ends of the yoke,
The component is sucked and held by a pair of the component holding portions,
The component conveying apparatus according to claim 4 . The energization control device includes:
In the carrying-in area, after the component and the component holding portion of the suction head are in contact with each other, a current is applied to the coil to suck and hold the component.
The parts conveying apparatus in any one of Claims 1 thru | or 5 . The energization control device includes:
During conveyance, the coil is attracted and held by passing a direct current in one direction to the coil,
In the carry-out area, the direct current in the other direction is energized to open the component,
The parts conveying apparatus in any one of Claims 1 thru | or 6 . The energization control device includes:
Before the suction head returns from the carry-out area to the carry-in area, the parts holding part is demagnetized by energizing currents in one direction and the other direction several times,
The parts conveying apparatus in any one of Claims 1 thru | or 7 . The transport mechanism is configured to move the plurality of suction heads in an annular shape,
The carry-in area and the carry-out area are arranged in the middle of the annular movement locus of the suction head,
Parts conveying apparatus according to any one of claims 1 to 8. In the carry-in area, a component supply device for supplying the component is disposed,
The component supply device includes:
A supply rail for supplying the parts in a line;
A fixing mechanism for fixing a component adjacent to the upstream side of the most downstream component in the supply rail;
It is characterized by having
Parts conveying apparatus according to any one of claims 1 to 9. The fixing mechanism includes a negative pressure hole that is formed in the supply rail and sucks and fixes the component.
The component conveying apparatus according to claim 10 . A component that sucks and holds a component supplied in a carry-in area by a suction head, moves the suction head by a transport mechanism, transports the component to a carry-out region, and the suction head opens the component in the carry-out region A transport method,
The suction head is
An electromagnet in which a coil is wound around a core of a magnetic material to generate a magnetic force at an end of the core;
A component holding part that is formed in the vicinity of the end of the core body and that attracts the component by the magnetic force;
By controlling the energization state of the coil of the suction head by an energization control device, switching between suction and release of the component by the component holding part of the suction head,
The core of the suction head is a U-shaped yoke,
A pair of the component holding portions are formed at both ends of the yoke,
The component is sucked and held by a pair of the component holding portions,
Parts transport method. A component that sucks and holds a component supplied in a carry-in area by a suction head, moves the suction head by a transport mechanism, transports the component to a carry-out region, and the suction head opens the component in the carry-out region A transport method,
The suction head is
An electromagnet in which a coil is wound around a core of a magnetic material to generate a magnetic force at an end of the core;
A component holding part that is formed in the vicinity of the end of the core body and that attracts the component by the magnetic force;
By controlling the energization state of the coil of the suction head by an energization control device, switching between suction and release of the component by the component holding part of the suction head,
The component is a weld ring disposed between the lid and the electronic component package;
The suction head includes a pair of the component holding portions having a shape along one opposite side of the square welding ring,
Parts transport method.

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