JP2011014756A - Multiple head type lid welding apparatus by turret - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multiple head type lid welding apparatus by a turret capable of conveying a plurality of lids held around the turret, adjusting a posture, tentatively mounting to a ceramic vessel, and performing disposal nearly simultaneously.SOLUTION: In the multiple head type lid welding apparatus by a turret, a plurality of component holding units 40 including a suction nozzle 42a for holding a lid and an electrode roller 210 provided around the suction nozzle 42a are provided in a circumferential direction of a rotary table 30. When one component holding unit 40 resides in a lid supply region 3, other component holding units 40 reside in a welding region 4, thus simultaneously processing ranging from supply to welding of lids.

Description

  The present invention relates to a welding apparatus for welding electronic components and the like, and more particularly, to a welding apparatus for temporarily welding a lid to a ceramic container.

  Conventionally, as shown in FIG. 13, a seam welding apparatus is proposed in which a rotating member 21 that reciprocally rotates at an angle of 90 ° is provided with four arm portions 21 a to 21 d that intersect the cross at an angle of 90 °. (For example, refer to Patent Document 1). The four arm portions 21a to 21d include suction nozzles 18a to 18d that suck and hold the lid 7, respectively. Among them, the two arm portions 21c and 21d are also provided with welding heads 19a and 19b having roller electrodes. The suction nozzles 18a and 18b provided on the side of the arm portions 21a and 21b are slidably mounted in the vertical direction via linear guides (not shown) at the hanging portions of the arm portions 21a and 21b. This vertical movement is performed by a cam (not shown). On the arm portions 21c and 21d side, the suction nozzles 18c and 18d and the welding heads 19a and 19b are mounted so as to be slidable in the vertical direction via linear guides. This vertical movement is also performed integrally by the cam.

  When the four arm portions 21a to 21d reciprocally rotate counterclockwise and clockwise at an angle of 90 ° with respect to the initial state shown in FIG. 13, the arm portion 21a is connected to the lid supply portion 13 and the second lid. It reciprocates between the positioning parts 12b. As a result, the suction nozzle 18a sucks and holds the lid 7 of the lid supply unit 13 and conveys the lid 7 to the second positioning unit 12b, then returns to the original position, and sucks and holds the lid 7 of the lid supply unit 13 again.

  The arm portion 21 b reciprocates between the first lid positioning portion 12 a and the lid supply portion 13. The suction nozzle 18b sucks and holds the lid 7 of the lid supply unit 13 and conveys the lid 7 to the first positioning unit 12a.

  The arm part 21c reciprocates between the lid tacking part 11 and the first positioning part 12a. During the counterclockwise forward movement, the lid 7 is moved to the first lid positioning portion 12a, and the lid 7 is sucked and held by the suction nozzle 18c. During the clockwise reverse operation, the lid 7 is conveyed to the lid temporary attachment portion 11. To be placed on the package 3. At this time, the welding head 19a always moves up and down together with the suction nozzle 18c, and the lid 7 placed on the package 3 is spot-welded to the package 3.

  The arm portion 21d reciprocates between the lid tacking portion 11 and the second lid positioning portion 12b. During the clockwise forward movement, the lid 7 is moved to the second lid positioning portion 12b, and the lid 7 is sucked and held by the suction nozzle 18d. During the counterclockwise reverse operation, the lid 7 is conveyed to the lid temporary attachment portion 11. To be placed on the package 3. At this time, the welding head 19b always moves up and down together with the suction nozzle 18d, and the lid 7 placed on the package 3 is spot-welded to the package 3.

  As described above, in the invention disclosed in Patent Document 1, the four arm portions 21a to 21d are reciprocally rotated, so that the two arm portions 21a or 21b alternately turn the lids 7 from the lid supply portion 13. The first lid positioning part 12a or the second lid positioning part 12b is conveyed while being sucked and held. On the other hand, the two arms 21c or 21d alternately suck and hold the lids 7 of the first lid positioning part 12a or the second lid positioning part 12b, convey them to the lid tacking part 11, and then the lids by the welding heads 19a or 19b. 7 is temporarily fixed to the package 3 sequentially.

JP 2003-046011 A

  However, the seam welding apparatus disclosed in Patent Document 1 described above releases the lid 7 from the suction nozzle 18a of the arm portion 21a and positions the opened lid 7 on another arm portion 21b in order to position the lid 7. The suction nozzle 18b holds the suction. In other words, in order to position the lid 7, the seam welding apparatus described above places the lid 7 on the lid positioning portion 12a or 12b and corrects the position, and then performs suction with another arm portion 21c or 21d. It must be held and transported to the weld. Therefore, there is a problem that the lid 7 is frequently opened and sucked during the period from the supply of the lid 7 to the welding, so that an opening error and a suction error are likely to occur.

  Further, the arm portion 21c and the arm portion 21d in this seam welding apparatus have a structure in which the suction nozzles 18c and 18d and the welding heads 19a and 19b respectively provided therein are simultaneously moved up and down by a cam mechanism. Therefore, when the lid 7 is sucked by the suction nozzle 18c, there is a problem that the welding head 19a becomes an obstacle. Moreover, in order to avoid this, there existed a problem that the height position of the suction nozzle 18c and the welding head 19a had to be adjusted with high precision. Of course, the suction nozzle 18d and the welding head 19b have the same problem.

  The arms 21a and 21b are determined to suck the lid 7 from the lid supply unit 13 and place it on the lid positioning units 12a and 12b. The arm units 21c and 21d are connected to the lid positioning units 12a and 12b. The role of sucking the lid 7 and temporarily welding the lid 7 to the package 3 is determined. Therefore, in the seam welding apparatus described above, each arm portion has a determined role, and cannot perform any operation other than reciprocating the two places at intervals of 90 °. As a result, the number of the arm portions of the seam welding apparatus is limited to four, and there is a problem that three or more types of processes such as suction, positioning, and tack welding cannot be provided on the path. For example, in the seam welding apparatus, it is not possible to provide a process for discarding a temporarily attached defective product after temporary attachment. The defective temporary attachment is packaged in a separate process after all the lids 7 are welded to the package 3. Every inspection must be done. Furthermore, since the seam welding apparatus basically reciprocally rotates the arm portions 21a to 21d, whose roles are determined, at intervals of 90 °, it always involves a rotation of 90 ° to perform one step of work. That is, although not known at the time of the present application, the number of arm portions provided on the rotating member is increased to 6 or 8, and the rotation angle for moving the arm portion in one step is reduced (for example, 45 ° or 30 °). However, there was a problem that lid supply and tack welding could not be performed at high speed.

  Moreover, the said seam welding apparatus has a structure which mounts the cam which moves a suction nozzle and a welding head downward on each arm part 21a-21d. Therefore, when the lid 7 is sucked from the lid supply unit 13, when the lid 7 is placed on the lid positioning units 12a and 12b, or when the lid 7 is temporarily welded to the package 3 at the lid welding unit, In order to finely adjust the height of the suction nozzle and the welding roller, there has been a problem that the rotation angles of all the cams must be controlled with high accuracy. For this reason, there has been a problem that a control device and a program for rotating the cam are complicated. Although not shown, the seam welding apparatus has a structure in which motors for rotating cams and the like are provided on the individual arm portions 21a to 21d. In particular, on the welding side, a considerable force for pressing the lid 7 against the package 3 is required, so that the motor becomes large and the weight balance of the arm portions 21a to 21d deteriorates.

  In view of such a situation, the present invention provides a multi-head type lid welding apparatus using a turret capable of carrying a plurality of lids held around the turret, adjusting the posture, temporarily attaching the ceramic container, and discarding the substantially simultaneously. It is something to be offered.

  The above-mentioned object is achieved by the following means based on the earnest research of the present inventors.

  That is, the present invention that achieves the above object includes a rotating table that rotates clockwise or counterclockwise, a plurality of rotating tables that are provided in the circumferential direction of the rotating table, and a lid holding means that holds the lid, and the lid holding A component holding unit having a welding electrode adjacent to the means, a lid supply device for conveying a lid before welding to a lid supply region located on a rotation path of the component holding unit by rotation of the rotary table; A container supply device that conveys a container before welding to a welding region located on a rotation path of the component holding unit, and the rotation table rotates to hold the lid of one of the component holding units. When the means is located on the lid supply area, the lid holding means of at least one other component holding unit is the lid. Characterized in that located above the welding zone while holding the de a plurality of heads type lid welding device according to the turret.

  In the multi-head type lid welding apparatus using a turret that achieves the above object, the component holding unit supports the lid holding means so as to be rotatable and slidable in the lid direction, and the lid holding means for rotating the lid holding means. Means rotation device is provided.

  In the multi-head type lid welding apparatus using a turret that achieves the above object, the component holding unit urges the lid holding means in a push-up direction, and a lid holding means guide member that slidably supports the lid holding means. A lid holding means urging member; and a pressing device for pushing down the lid holding means is fixedly disposed on the lid supply area and the welding area, respectively. The pressing device pushes down the lid holding means against the biasing force of the member, thereby holding the lid in the lid supply region and mounting the lid in the container in the welding region. And

  The multi-head type lid welding apparatus using a turret that achieves the above object is characterized in that the component holding unit includes a welding electrode guide member that slidably supports the welding electrode, and a welding electrode that urges the welding electrode in a push-up direction. And a pressing mechanism on the welding area is provided with an interlocking mechanism for simultaneously sliding the lid holding means and the welding electrode, and the pressing on the welding area. When the device applies a pressing force to the component holding unit, the lid holding means and the welding electrode are simultaneously pressed down.

  A multi-head type lid welding apparatus using a turret that achieves the above object acquires posture information of the lid held by the component holding unit in a posture information acquisition region located on a rotation path of the component holding unit. Further, posture information acquisition means is provided, and at least three of the component holding units are simultaneously positioned in the lid supply region, the welding region, and the posture information acquisition region.

  The multi-head type lid welding apparatus using a turret that achieves the above object further includes posture determination means for determining whether the posture of the lid is good or not based on the posture information, and on the rotation path of the component holding unit. And a discard area for discarding the lid determined to be a defective posture by the posture determination means, and the component holding units are arranged at at least four locations at regular intervals in the circumferential direction of the rotary table. The four component holding units are simultaneously located in the lid supply area, the posture information acquisition area, the welding area, and the disposal area.

  In the multi-head type lid welding apparatus using a turret that achieves the above object, the lid supply area, the posture information acquisition area, the welding area, and the disposal area are arranged in this order in one direction clockwise or counterclockwise. It is provided on the rotation path of the component holding unit.

  The multi-head type lid welding apparatus using a turret that achieves the above object, wherein the component holding unit slides only the welding electrode when the lid held by the lid holding means comes into contact with the container, The welding electrode is brought into contact with the lid on the container.

  In the multi-head type lid welding apparatus using a turret that achieves the above object, the lid holding means is provided at a position closer to the container than the welding electrode, and the lid holding means and the welding electrode hold the lid. The lid holding means and the welding electrode guide member are configured to slide individually along the means guide member and the welding electrode guide member, and in the welding area, the interlocking mechanism of the pressing device provided on the welding area. When the welding electrode is pushed down at the same time, the lid abuts against the container, so that the lid holding means moves upward relative to the welding electrode along the lid holding means guide member, The welding electrode is in contact with the lid and welds the lid and the container.

  According to the present invention, it is possible to reduce the wasted time when the lid is supplied, conveyed, and welded to the ceramic container, and the cycle time of the tack welding of the lid and the ceramic container can be greatly shortened. Can be played.

It is a front view of the multiple head type lid welding apparatus 1 by the turret which concerns on 1st Embodiment. It is a left view of the multiple head type lid welding apparatus 1 by the turret. It is a top view of the multiple head type lid welding apparatus 1 by the turret. (A) is a top view of the rotary table 30 and the component holding unit 40, (b) is sectional drawing of the rotary table 30 and the component holding unit 40 seen from the arrow AA direction in Fig.4 (a). It is. (A) (b) is the figure which showed the cross-section of the component holding unit 40, and the external urging | biasing apparatus 50. FIG. (A)-(c) is sectional drawing in case the components holding unit 40 located in the welding area | region 4 seeing from the arrow BB direction of Fig.4 (a). (A) It is a side view which shows the state which hold | maintains the electrode roller 210 with the electrode holding device 220, (b) It is a side view which shows the state which removed the electrode roller 210 from the electrode holding device 220. It is the left view which showed the state which moved the rotary table 30 of the multiple head type lid welding apparatus 1 by the same turret to the retracted position. (A)-(f) is the top view which showed the action | operation of the lid welding apparatus 1. FIG. (A) (b) It is sectional drawing which looked at the component holding unit which concerns on 2nd Embodiment from the right side surface. (A)-(d) It is a top view of the multiple head type lid welding apparatus by the turret which concerns on 3rd Embodiment. (A)-(d) It is a top view of the multiple head type lid welding apparatus by the turret which concerns on 3rd Embodiment. It is a top view of the conventional seam welding apparatus.

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

  1 to 3 show a multi-head type lid welding apparatus 1 (hereinafter referred to as a lid welding apparatus 1) using a turret according to an embodiment of the platform 1 of the present invention. The lid welding apparatus 1 adsorbs this lid, determines the attitude of the lid in the adsorbed state, temporarily welds this lid to a ceramic container, and discards the defective lid. In addition, unless otherwise indicated, each direction in the description in the present specification is based on a case where the multi-head type lid welding apparatus 1 using a turret in an operable state is viewed from the front in principle.

  As shown in FIGS. 1 to 3, the lid welding device 1 is disposed on a base 2, a lid supply device 10 disposed on the left side of the upper surface of the base 2, and is swingably disposed on the base 2. The arm 20, the rotary table 30 rotatably disposed on the arm 20, four component holding units 40 disposed along the circumferential direction on the outer peripheral surface of the rotary table 30, and the arm 20 Two external urging devices 50, a rotary table driving means 60 for rotating the rotary table 30, a posture information acquiring means 70 disposed on the front side of the center of the upper surface of the base 2, and a swing for swinging the arm 20 Means 80, a central control device 90 for controlling the entire lid welding device 1, and a ceramic container supply device 100 disposed on the right side of the upper surface of the base 2 are configured. In the lid welding apparatus 1, the lid 300 supplied from the outside to the lid supply apparatus 10 in a bulk state is adsorbed by the component holding unit 40 and conveyed to the ceramic container supply apparatus 100, and is aligned with the ceramic container supply apparatus 100. Seam-welded to the ceramic container 400. Further, the lid welding apparatus 1 according to the present embodiment uses a CCD camera (not shown) or the like disposed in the welding region 4 so as to photograph the welding state of the ceramic container 400 and the lid 300. The welding state is photographed and judged, and the welded part judged to be unacceptable can be accommodated in a predetermined waste tray 350.

  The base 2 is a substantially rectangular parallelepiped member. Inside the base 2, a central control device 90, a power supply device (not shown) and the like are disposed. A column member 2a is disposed at the back end of the upper surface of the base 2, and an arm bracket 2b for movably supporting the arm 20 is disposed at the upper end of the column member 2a. Yes. In the present embodiment, the lid supply region 3 for supplying the lid 300 from the lid supply device 10 to the component holding unit 40 is held on the left side portion of the upper surface of the base 2, and the component holding unit 40 holds the lid supply region 3 on the right side portion of the upper surface of the base 2. A welding region 4 is set in which the lid 300 is tack welded to the ceramic container 400 placed on the ceramic container supply device 100. In addition, the posture information acquisition region 5 is set in the center front side portion of the upper surface of the base 2 on which the posture information acquisition means 70 is provided. In addition, in the center back side part (oscillating means 80 side) of the upper surface of the base 2, if it is determined that the tacked part after the lid 300 and the ceramic container 400 are tack welded is rejected, A disposal area 6 to be discarded is set in the disposal tray 350.

  The lid supply device 10 is a so-called parts feeder that conveys the lid 300 put into the tank in a bulk state to the lid holding position 11 of the lid supply device 10 while adjusting the posture and direction. The lid supply device 10 can accurately convey the lid 300 to the lid holding position 11 while adjusting the direction and angle of the lid 300 introduced in a bulk state. There is no need to provide an inspection device or a drive device, and the equipment cost can be reduced, and the cycle time and the manufacturing cost can be reduced by reducing the number of processes.

  The arm 20 is an arm-shaped member that extends upward from the arm bracket 2b toward the front of the lid supply device 10. A rotary table 30 is rotatably held on the arm 20, and a rotary table driving means 60 and an external urging device 50 are disposed. The external urging device 50 is provided above each corresponding to the lid supply region 3 and the welding region 4 side. In addition, the external urging device 50 provided in the welding area 4 includes an interlocking member 250 (details will be described later).

  The swinging means 80 includes a motor 82, a screw shaft 84 connected to the output shaft of the motor 82, and a nut 86 provided on the arm 20. The motor 82 is, for example, a stepping motor, and is disposed on the left side surface of the column member 2a with the output shaft facing upward via a motor bracket 82a. The screw shaft 84 is a rod-like member having a screw formed on the outer peripheral surface, and is coaxially connected to the output shaft of the motor 82. The nut 86 includes a female screw that is screwed with the male screw of the screw shaft 84, and is rotatably disposed above the rear end of the arm 20 via a nut bracket 88. The nut 86 is screwed with the screw shaft 84, and is linearly moved along the screw shaft 84 when the screw shaft 84 is driven and rotated by the motor 82. The nut 86 is located on the left side of the swing center of the arm 20. Therefore, as shown in FIG. 8, the rotary table 30 is raised by moving the nut 86 downward to the “retracted position”, or the rotary table 30 is lowered by moving the nut 86 upward, It can be the “driving position”.

  The turntable 30 is a substantially disk-shaped member, and four component holding units 40 are arranged on the outer peripheral surface at equal intervals (approximately 90 ° intervals in the present embodiment). 1 to 3, the rotary table 30 is in the “driving position”. The rotary table 30 is held by the arm 20 so that the rotation axis is in the vertical direction at the operation position. Then, the rotary table 30 rotates in one direction clockwise or counterclockwise, and all the component holding units 40 arranged around the rotary table 30 are connected to the lid supply area 3, the posture information acquisition area 5, It passes through the welding area 4 and the disposal area 6 in order. Further, when any one of the component holding units 40 is in a position facing the lid supply region 3, the other three component holding units 40 are positions facing the posture information acquisition region 5, the welding region 4, and the disposal region 6. It is configured to be in.

  One of the two external urging devices 50 is disposed above the lid supply region 3. The other external urging device 50 is disposed above the welding region 4. One external urging device 50 applies an external force to the component holding unit 40 located on the lid supply region 3, and moves the suction nozzle 42 a of the component holding unit 40 in a direction (downward) close to the lid supply region 3. Move. The other external biasing device 50 applies an external force to the component holding unit 40 located on the welding region 4. As will be described in detail later, the other external urging device 50 is provided with an interlocking member 250. By applying an external force using this interlocking member 250, the suction nozzle 42a and the electrode roller 210 are lowered substantially simultaneously. Let

  The rotary table driving means 60 is fixed to the lower surface of the arm 20 in the figure and is located between the arm 20 and the rotary table 30. In the present embodiment, the rotary table driving means 60 is a hollow DD motor including a stator fixed to the arm 20 and a cylindrical rotor that rotates on the outer periphery of the stator. A through hole is formed in the axial direction in the center of the stator. The rotary table 30 is fixed to the rotor in a state where the hollow shaft 32 is inserted into the through hole.

  A lid confirmation camera 13 is disposed above the lid supply area 3. The lid check camera 13 is fixed to the arm 20 side above the rotary table 30 in order to avoid interference with the rotary table 30. The lid confirmation camera 13 confirms the position of the lid 300 supplied to the lid supply area 3 by image recognition using a period in which the component holding unit 40 is not present on the lid supply area 3. Thereby, it becomes possible to confirm a case where the supply of the lid 300 is interrupted. Although not particularly shown in the present embodiment, when the lid 300 is supplied to the lid supply area 3 by a transport tray or the like on which a large number of lids 300 are mounted, the transport tray is moved to the X− using this image recognition result. Positioning in the Y direction becomes possible. As a method for supplying the lid 300 to the lid supply region 3, it is also preferable to use a separation tray on which a plurality of lids 300 are randomly placed, or an alignment tray on which the plurality of lids 300 are arranged and placed. In this case, it is possible to position the separating tray and the alignment tray in the XY direction using the above-described image recognition result. It is also preferable to set a plurality of lids 300 on a cassette-structured lid supply device (referred to as a lid cassette) and supply the lid 300 to the lid supply region 3. The lid cassette can position the lid 300 with high accuracy, and can also omit positioning by image recognition.

  A container confirmation camera 14 is disposed above the welding region 4. The container confirmation camera 14 is fixed to the arm 20 side above the rotary table 30 in order to avoid interference with the rotary table 30. The container confirmation camera 14 confirms the position of the ceramic container 400 before tack welding on the ceramic container supply device 100 by image recognition using the time when the component holding unit 40 does not exist on the welding region 4. As a result, the alignment tray 101 can be positioned.

  As shown in FIG. 3, such image recognition is possible because the component holding unit 40 is provided so as to protrude outward with respect to the rotary table 30, and when the rotary table 30 rotates, the component holding is performed. This is because the unit 40 has secured a time that does not exist above the lid supply region 3 or the welding region 4. In other words, the interference avoidance space 30 </ b> A is provided around the turntable 30 and between the adjacent component holding units 40 so as not to hinder photographing by the lid confirmation camera 13 and the container confirmation camera 14.

  In this embodiment, the posture information acquisition unit 70 is constituted by a CCD camera and is arranged in the posture information acquisition region 5. Specifically, the posture information acquisition unit 70 images the lid 300 held by the suction nozzle 42 a of the component holding unit 40 located in the posture information acquisition region 5 from below. The posture information acquisition unit 70 is electrically connected to the central controller 90 and transmits image information obtained by imaging to the central controller 90. It is also preferable to mechanically correct the posture of the lid 300 sucked by the suction nozzle 42a. For example, the posture of the lid 300 is corrected to an appropriate posture by passing the lid 300 after being sucked by the suction nozzle 42a through a centering jig whose outer shape of the lid is formed during the rotation of the rotary table 30. Is also preferable. It is also preferable that the posture of the lid 300 is corrected based on the image information of the posture acquired by the posture information acquisition means 70 after performing the mechanical correction as described above. As described above, the posture defect can be reduced by performing the correction based on the image information step by step after the mechanical correction.

  The central control device 90 is a control device including a CPU, a ROM, a RAM, and the like, and includes a lid supply device 10, an external urging device 50, a rotary table drive means 60, an attitude information acquisition means 70, a ceramic container supply device 100, and the like. Control directly. Further, the central control device 90 transmits control information to the suction nozzle switching control device 91 and the holding unit rotation control device 92 to individually control the four switching valves 37 and the four holding unit rotation driving means 43.

  The ceramic container supply apparatus 100 includes an alignment tray 101 having a plurality of recesses 101A arranged in a matrix and formed on an upper surface thereof, and an alignment tray moving means 102 including an XY table. In the recess 101A of the alignment tray 101, the ceramic container 400 before the tack welding is placed. Although not shown, the alignment tray moving means 102 is configured by combining linear motion devices driven by a motor at right angles to each other. The alignment tray moving means 102 in the present embodiment can move the alignment tray 101 in the vertical direction and the horizontal direction in FIG.

  The alignment tray moving means 102 sequentially supplies a plurality of ceramic containers 400 one by one immediately below the suction nozzle 42 a of the component holding unit 40 in the welding region 4. In the welding region 4, the lid 300 is temporarily welded to the ceramic container 400. By repeating this operation, the lid 300 is temporarily attached to all the ceramic containers 400 placed in the recess 101A of the alignment tray 101. When all the ceramic containers 400 are temporarily attached, the alignment tray 101 is carried to the next seam welding (main attachment) process, for example.

  Next, the configuration of the rotary table 30 and the component holding unit 40 will be specifically described with reference to FIGS.

  As shown in FIG. 4A, the component holding unit 40 protrudes outward on the outer peripheral surface of the substantially cylindrical turntable 30 at approximately 90 ° intervals. An interference avoidance space 30 </ b> A is formed between the adjacent component holding units 40 around the turntable 30. Further, a lid confirmation camera 13 is disposed above the lid supply region 3, and a container confirmation camera 14 is disposed above the welding region 4. While the component holding unit 40 does not exist on the lid supply area 3, the upper lid confirmation camera 13 recognizes the image of the lid 300 through the interference avoidance space 30A and confirms the position. Accordingly, the position of the lid 300 to be supplied next can be confirmed while the lid 300 is being conveyed by the rotation of the rotary table 30. The component holding unit 40 is disposed on the turntable 30 so as to be easily detachable by a bolt or the like (not shown).

  A hollow shaft 32 projects from the center of the upper surface of the turntable 30. The hollow shaft 32 becomes a rotating shaft of the rotary table 30 and is rotatably held by the arm 20. The hollow shaft 32 has a double structure in which a large-diameter outer pipe 32a and a small-diameter inner pipe 32b are coaxially arranged. A gap between the outer pipe 32 a and the inner pipe 32 b of the hollow shaft 32 constitutes a part of a passage connecting a vacuum pump (not shown) serving as a low pressure source and the component holding unit 40. An air pipe 34 connected to a vacuum pump via a swivel joint 33 is connected to the upper end portion of the hollow shaft 32.

  Inside the turntable 30, an annular central air chamber 35 connected coaxially with the gap between the outer pipe 32a and the inner pipe 32b is formed. Further, four suction passages 36 are formed radially from the central air chamber 35 and are individually connected to the respective component holding units 40. In the middle of each suction passage 36, a switching valve 37 for switching communication / blocking between the component holding unit 40 and the vacuum pump is provided. Therefore, in this embodiment, it is possible to individually switch communication / blocking between each component holding unit 40 and the vacuum pump. The switching valve 37 in the present embodiment is composed of an electromagnetic valve that moves a valve element by a solenoid.

  Further, inside the turntable 30, a switching valve 37 is controlled to control a suction nozzle switching control device 91 that controls suction / release of parts by a suction nozzle 42a, which will be described later, and a holding portion rotation driving means 43, which will be described later. A holding unit rotation control device 92 is provided. The suction nozzle switching control device 91 and the holding portion rotation control device 92 are control devices including a CPU, a ROM, a RAM, and the like. The suction nozzle switching control device 91 and the holding portion rotation control device 92 are electrically connected to the switching valve 37 and the holding portion rotation driving means 43, respectively, and electrically connected to the central control device 90 by wiring not shown. Has been. The wiring connecting the central control device 90, the suction nozzle switching control device 91, and the holding portion rotation control device 92 is connected via a slip ring 38 disposed at the distal end portion of the hollow shaft 32. The wiring between the slip ring 38, the suction nozzle switching control device 91, and the holding portion rotation control device 92 is passed through the inside of the inner pipe 32b of the hollow shaft 32. In addition, the rotary table 30 mentioned above may be called a turret.

  5A and 5B are views showing a cross-sectional structure of the component holding unit 40 and the external urging device 50. FIG. The component holding unit 40 includes a housing 41, a holding portion 42 that is rotatably arranged on the housing 41, a holding portion rotation driving means 43 that drives the holding portion 42 to rotate, and a pair of electrode units 200 and 200 (details). Are described later.

  The housing 41 is a member that holds part of the holding portion 42, the holding portion rotation driving means 43, and the electrode unit 200 inside and is detachably fixed to the rotary table 30 with bolts or the like.

  The holding part 42 is an elongated cylindrical member in which a suction nozzle 42a is disposed at a tip directed downward in the drawing. The holding portion 42 is supported by the housing 41 by the support member 41A and the bracket 44 so as to be rotatable (spinning) around the central axis and reciprocating along the central axis (spinning axis). The inside of the holding part 42 is a suction passage 42b connected to the suction nozzle 42a. The suction passage 42a of the holding portion 42 is connected to a switching valve 37 disposed on the rotary table 30 through a passage and a connector (not shown).

  The suction nozzle 42a is provided so as to face the upper surface of the base 2 at the operation position. The switching valve 37 is configured to switch communication / blocking between the vacuum pump and the suction nozzle 42a, and at the time of blocking, the suction nozzle 42a is opened to the atmosphere. That is, when the vacuum pump and the suction nozzle 42 a are communicated with each other by the switching valve 37, the holding unit 42 sucks and holds (holds) the lid 300 by the suction nozzle 42 a, and the vacuum valve and the suction nozzle 42 a by the switching valve 37. The lid 300 that is held by the suction nozzle 42a is released when the valve is shut off. In addition, the holding | maintenance part 42 and the suction nozzle 42a in this embodiment comprise the lid holding means of this invention.

  The holding part rotation driving means 43 includes a motor 43 a fixed to the housing 41 and a transmission mechanism 43 b that transmits the rotational driving force of the motor 43 a to the holding part 42. In the present embodiment, the motor 43a is a stepping motor. The motor 43a is electrically connected to the holding unit rotation control device 92 via a wiring and a connector (not shown). The transmission mechanism 43b includes a drive gear 43b1 fixed to the output shaft of the motor 43a and a driven gear 43b2 coaxially fixed to the holding portion 42 so as to reduce the rotational speed of the motor 43a with a predetermined reduction ratio. It is configured. Note that the transmission mechanism 43b may be configured by three or more gear trains, or may be configured by a belt transmission mechanism, a chain transmission mechanism, or the like.

  The holding part 42 rotates by being driven by the holding part rotation driving means 43. In the present embodiment, the posture of the lid 300 sucked and held by the suction nozzle 42a is adjusted by rotating the holding portion 42 in this manner.

  A bracket 44 is connected to the base end portion (upper end portion) of the holding portion 42. The bracket 44 is disposed from the upper end of the holding portion 42 toward the right side of the drawing (the center side of the rotary table 30). The bracket 44 is connected to the holding portion 42 so as to be rotatable around the central axis of the holding portion 42 but not movable in the direction of the central axis of the holding portion 42. That is, when the holding portion 42 rotates, the bracket 44 does not rotate. However, when the holding portion 42 reciprocates in the central axis (spinning axis) direction, the bracket 44 reciprocates together with the holding portion 42 (forward or backward). Move backward).

  The bracket 44 is always urged upward (on the arm 20 side) by an internal urging device (compression spring) 45 and is normally in contact with a stopper 46 provided on the inner surface of the housing 41. It is stationary. Thereby, the holding | maintenance part 42 will be in the state pulled near to the arm 20 side with the bracket 44 normally, as Fig.5 (a) shows. That is, the holding part 42 is normally separated from the upper surface of the base 2 (positioned upward). On the upper surface of the bracket 44, a pressure receiving member 44a projects upward (arm 20 side). The pressure receiving member 44a is exposed to the outside of the housing 41, and the external urging device 50 is configured to press and apply an external force to the pressure receiving member 44a. Note that the support member 41A and the bracket 44 in the present embodiment constitute a lid holding means guide member of the present invention. Further, in this embodiment, the support member 41A and the holding portion rotation driving means 43 constitute the lid holding means rotating device of the present invention.

  The external urging device 50 is disposed on the arm 20 on the upper surface of the arm 20, an elongated cylindrical guide member 51 disposed in the vertical direction, an elongated bar-shaped pressing member 52 inserted into the guide member 51. And a cam 54 fixed to the output shaft of the motor 53. The guide member 51 is disposed in the vertical direction with the lower end directed toward the pressure receiving member 44a. Therefore, the pressing member 52 inserted into the guide member 51 is provided such that the lower end faces the pressure receiving member 44 a and the upper end is pressed by the cam 54. The pressing member 52 reciprocates up and down in the figure (in the direction approaching or separating from the pressure receiving member 44 a) as the cam 54 driven by the motor 53 rotates. What is necessary is just to set the cam profile of the cam 54 suitably according to the conveyance speed of the lid welding apparatus 1, etc. FIG.

  The pressing member 52 applies an external force that exceeds the urging force of the internal urging device 45 to the pressure receiving member 44a. Then, as shown in FIG. 5B, the holding part 42 is moved together with the bracket 44 in a direction (downward) away from the arm 20 along the rotation axis of the holding part 42. Thereafter, when the pressing member 52 moves away from the pressure receiving member 44 a as the cam 54 rotates, the bracket 44 and the holding portion 42 are moved along the rotation axis of the holding portion 42 by the urging force of the internal urging device 45. Thus, it moves in a direction (upward) close to the arm 20. Note that the external biasing device 50 in the present embodiment constitutes a pressing device of the present invention. Further, the internal biasing device 45 in the present embodiment constitutes the lid holding means biasing device of the present invention.

  6A to 6C are cross-sectional views when the component holding unit 40 is located in the welding region 4 as seen from the direction of the arrow B-B in FIG.

  The electrode unit 200 includes a rod-shaped electrode pressure receiving member 204, a welding electrode urging member 208 that urges the electrode pressure receiving member 204 upward, an electrode roller 210, and an electrode holding device 220. The electrode pressure receiving member 204, the electrode roller 210, and the electrode holding device 220 are provided as a pair at symmetrical positions with respect to the suction nozzle 42a. In addition, the pair of electrode pressure receiving members 204 and 204 are connected by a connecting member 206, and both the electrode pressure receiving members 204 and 204 are simultaneously moved in the vertical direction. The pair of electrode pressure receiving members 204 is supported by four welding electrode guide members 48 provided inside the housing 41 so as to be movable in the vertical direction in the figure. When the suction nozzle 42a is not receiving an external force in the upward direction (arm 20 direction), the lowermost ends of the pair of electrode rollers 210 and 210 are positioned above the tip (lowermost end) of the suction nozzle 42a. It is installed as follows. In other words, when no external force is received, the suction nozzle 42 a is disposed closer to the upper surface of the base 2 than the pair of electrode rollers 210 and 210. Therefore, even if there is a pair of electrode rollers 210, 210, the suction nozzle 42 a can be closer to the lid 300 than the electrode roller 210, and can hold and transport the lid 300. In the welding region 4, the component holding unit 40 simultaneously lowers the suction nozzle 42 a and the electrode roller 210 by the interlocking member 250, but the suction nozzle 42 a places the sucked lid 300 on the ceramic container 400. Later, the electrode roller 210 is further lowered relative to the suction nozzle 42a and comes into contact with the lid 300 so that the lid 300 and the ceramic container 400 can be temporarily attached.

  The external urging device 50 on the upper side of the welding region 4 includes an interlocking member 250 at the tip (lower end) of the pressing member 52. The interlocking member 250 can contact the pressure receiving member 44 a exposed upward from the housing 41 of the component holding unit 40 and the pair of electrode pressure receiving members 204, 204 substantially simultaneously. Therefore, when the pressing member 52 is pushed down, both the pressure receiving member 44a and the pair of electrode pressure receiving members 204, 204 are lowered simultaneously by the interlocking member 250. Note that the electrode roller 210 and the interlocking member 250 according to the present embodiment constitute the welding electrode and the interlocking mechanism of the present invention, respectively.

  Each electrode pressure receiving member 204 is provided with a stopper piece 204A. When the electrode pressure receiving member 204 is urged upward (in the direction of the arm 20) by the welding electrode urging member 208, the stopper piece 204A is provided with the casing 41. It comes in contact with a stopper receiver 47 provided inside. As a result, the upward movement of the electrode pressure receiving member 204 is restricted to a predetermined position.

  In this embodiment, as described below, when the electrode is worn by welding, the electrode roller 210 is easily removed and replaced with a new electrode roller, or the electrode roller 210 is rotated and worn. It can be set again so that no part is on the lid side.

  The electrode holding device 220 is provided at the lower end of the electrode pressure receiving member 204 and holds the electrode roller 210 in a detachable manner. As shown in FIG. 7, the electrode holding device 220 includes a fixing member 222, an opening / closing member 224, and a rotation pin 226. The opening / closing member 224 is held by a fixed member 222 so as to be rotatable about a rotation pin 226 as a rotation axis.

  The fixing member has a fixed side holding portion 222A formed by cutting out in an arc shape, and the opening / closing member 224 similarly has an opening / closing side holding portion 224A formed by cutting out in an arc shape. . Therefore, when the opening / closing member 224 is rotated in the direction in which the electrode roller 210 is sandwiched (the closing direction), the electrode roller 210 is sandwiched between the fixed side holding portion 222A of the fixing member 222 and the opening / closing side holding portion 224A of the opening / closing member 224. (See FIG. 1A).

  Further, when the opening / closing member 224 is rotated in a direction in which the electrode roller 210 is separated (opening direction), the electrode roller 210 is separated from the fixing member 222 and the opening / closing member 224 (see FIG. 4B). That is, the electrode roller 210 can be easily detached from the electrode holding portion 220 by rotating the opening / closing member 224. Therefore, the electrode holding device 220 can easily replace the worn electrode roller 210 with a new electrode roller, or once the worn electrode roller 210 is removed, the unworn electrode portion of the same electrode roller is removed. It can be remounted by rotating it to the lid side.

  Next, the movement of the suction nozzle 42a and the electrode roller 210 in the welding region 4 will be described in detail.

  First, as shown in FIG. 6A, by rotating the turntable 30, the lid 300 sucked by the suction nozzle 42 a is conveyed to a position directly above an arbitrary ceramic container 400 in the welding region 4.

  Next, the external urging device 50 drives the cam 54 to move the pressing member 52 downward as shown in FIG. 6B. As the pressing member 52 moves, the interlocking member 250 moves downward (sliding forward), and the pressure receiving member 44a and the electrode pressure receiving member 204 are pressed down with a force that overcomes the internal biasing device 45 and the welding electrode biasing member 208. Accordingly, the interlocking member 250 can lower the pressure receiving member 44a and the electrode pressure receiving member 204 substantially simultaneously.

  When the pressure receiving member 44a moves downward in FIG. 6B, the bracket 44 and the holding portion 42 connected to the pressure receiving member 44a move downward. Therefore, the lid 300 sucked by the suction nozzle 42 a is lowered until it comes into contact with a predetermined position of an arbitrary ceramic container 400.

  After the lid 300 is lowered and comes into contact with the ceramic container 400, when the interlocking member 250 further pushes down the pressure receiving members 44 a and 204, the holding unit 42 receives the reaction force received by the lid 300 being pressed against the ceramic container 400. It is received from the lid 300 through the suction nozzle 42a. The holding unit 42 transmits this reaction force to the internal biasing device 45. The internal biasing device 45 configured to have a compression spring is compressed by the reaction force transmitted from the holding portion 42. On the other hand, when the pressure receiving member 204 is pushed down by the interlocking member 250, the electrode roller 210 is lowered. After the lid 300 held by the suction nozzle 42 a contacts the ceramic container 400, the electrode roller 210 descends relative to the suction nozzle 42 a and contacts the lid 300. When the electrode roller 210 comes into contact with the lid 300, the electrode roller 210 is moved by the elasticity of the welding electrode biasing member 208 such as a spring connected to the electrode roller 210 via the pressure receiving member 204 and the connecting member 206. The shock caused by the contact with 300 can be absorbed and an appropriate pressing force can be applied to the lid 300.

  That is, when the pressure receiving members 44a and 204 are pushed down substantially simultaneously by the connecting member 250 and the lid 300 comes into contact with the ceramic container 400, the suction nozzle 42a cannot move further downward, but further presses the pressing member 52. When pushed down, as shown in FIG. 6C, only the electrode rollers 210 and 210 move relatively downward with respect to the suction nozzle 42a. As a result, the electrode roller 210 contacts the opposite side of the lid 300 placed on the ceramic container 400. Thereafter, when a current is passed through the electrode roller 210 by a current generator (not shown), the lid 300 and the ceramic container 400 can be temporarily welded by Joule heat.

  As described above, the electrode roller 200 and the suction nozzle 42a can be individually moved up and down. Therefore, the lid welding apparatus 1 according to the present embodiment places the lid 300 on the ceramic container 400 by the suction nozzle 42a and then moves the electrode roller 210 relatively downward with respect to the suction nozzle 42a. Can be tack welded.

  Further, the suction nozzle 42a and the electrode roller 210 are supported by the internal biasing device 45 and the welding electrode biasing member 208 in an elastic state. Therefore, the internal biasing device 45 and the welding electrode biasing member 208 support the suction nozzle 42a and the electrode roller 210, and when the suction nozzle 42a places the lid 300 on the ceramic container 400, or the electrode roller 210 is the lid. When abutting on the lid 300, the impact force applied to the lid 300 is absorbed, and temporary welding can be performed without applying a large load to the lid 300 or the ceramic container 400.

  FIG. 8 is a left side view showing a state where the rotary table 30 is moved to the retracted position. The swinging means 80 includes an operation position (see FIG. 2) where the component holding module 40 faces the lid supply region 3, the posture information acquisition region 5, the welding region 4 and the disposal region 6, and the component holding module 40 supplies the lid. The rotary table 30 is configured to be movable between a retreat position where the region 3, the posture information acquisition region 5, the welding region 4 and the disposal region 6 are not opposed to each other. Specifically, the swinging means 80 moves the rotary table 30 from the operating position to the retracted position by rotating the arm 20 by approximately 90 degrees. Since the nut 86 and the motor 82 rotate or swing as the arm 20 rotates, the swinging means 80 can rotate the arm 20 smoothly even though it has a simple configuration. In the present embodiment, the rotary table 30 is largely separated from the base 2 by moving to the retracted position, and the lower surface of the rotary table 30, the suction nozzle 42a of the component holding unit 40, and the tip of the electrode unit 200 are directed sideways. Open. By doing so, maintenance of the suction nozzle 42a and the electrode unit 200 and maintenance of the lid supply device 10, the ceramic container supply device 100, the posture information acquisition means 70, and the like disposed on the base 2 can be easily performed. Can do.

  Next, the operation of the lid welding apparatus 1 will be described. FIGS. 9A to 9F are plan views showing the operation of the lid welding apparatus 1. For ease of explanation, the number of the component holding units 40A to 40D is given to the four component holding units 40, and the operation of the component holding unit 40A will be mainly described. Since the other component holding units 40B to 40D operate in the same manner as the component holding unit 40A, description thereof is omitted.

  First, as shown in FIG. 9A, the lid supply device 10 sets the lid 300 in the vicinity of the lid holding position 11 of the lid supply device 10 while adjusting the direction and posture of the lid 300 put in the bulk state. Then, it is conveyed to the lid supply area 3 that has been provided.

  After the lid 300 is transported to the lid supply region 3 by the lid supply device 10 (or substantially simultaneously), the rotary table 30 is rotated approximately 90 ° counterclockwise to supply the suction nozzle 42a of the component holding unit 40A to the lid. It moves to the position facing the lid 300 conveyed to the region 3 (see FIG. 9C). Note that, as shown in FIG. 9B, the upper part of the lid supply area 3 and the welding area 4 is open while the turntable 30 is rotating. The image of the lid 300 on the lid supply area 3 is recognized, and the state of the ceramic container 400 in the welding area 4 is further recognized by the container confirmation camera 14. As described above, it is possible to reduce the suction mistake by recognizing the state of the lid 300 before the suction.

  After rotating the rotary table 30 by approximately 90 degrees, as shown in FIG. While the rotary table 30 is stationary, the external urging device 50 presses the pressure receiving member 44a of the component holding unit 40A, thereby lowering the holding portion 42 of the component holding unit 40A in the lid supply region 3 and sucking it. The nozzle 42 a is brought close to the lid 300 conveyed to the lid supply region 3. The switching valve 37 corresponding to the component holding unit 40A communicates the suction nozzle 42a with the vacuum pump, so that the suction nozzle 42a sucks and holds the lid 300. Thereafter, the holding portion 42 is raised by the urging force of the internal urging device 45 by releasing the pressing of the pressure receiving member 44a by the external urging device 50 (or loosening the pressing force to the pressure receiving member 44a).

  Next, the turntable 30 again rotates approximately 90 degrees counterclockwise, and again stops for a predetermined time (see FIG. 4D). As a result, the lid 300 held by the component holding unit 40 </ b> A is conveyed to a position facing the posture information acquisition region 5. While the rotary table 30 is stationary, the posture information acquisition unit 70 images the lid 300 held by the suction nozzle 42a of the component holding unit 40A. While the rotary table 30 is rotating, the lid supply device 10 conveys the next lid 300 to the lid supply area 3 (below the suction nozzle 42a of the component holding unit 40B) as described above. While the rotary table 30 is stationary, the suction nozzle 42a of the component holding unit 40B located at the position facing the lid supply area 3 sucks the lid 300 conveyed to the lid supply area 3 as described above. And hold.

  Next, the rotary table 30 rotates again approximately 90 degrees counterclockwise (see FIG. 5E). While the turntable 30 is rotating, the holding unit rotation driving unit 43 of the component holding unit 40A causes the holding unit 42 of the component holding unit 40A to be at an appropriate angle based on the image information captured by the holding posture imaging unit 70. And the posture of the lid 300 held by the suction nozzle 42a is adjusted. Thereby, it arranges so that the lid 300 can be correctly mounted in the ceramic container 400 of the welding area | region 4. FIG.

  Next, after the rotary table 30 has rotated approximately 90 ° counterclockwise, the rotary table 30 is again stationary for a predetermined time (see FIG. 5E). As a result, the lid 300 held by the component holding unit 40A arrives at the welding region 4. The ceramic container supply apparatus 100 moves the ceramic container 400 in the XY direction and corrects the position based on the position recognition result of the ceramic container 400 in the welding region 4 photographed by the container confirmation camera 14 described above. The position correction of the ceramic container 400 is performed after the container confirmation camera 14 recognizes the position of the ceramic container 400 in the welding region 4 and before the pressure receiving member 44a and the electrode pressure receiving member 204 are lowered by the interlocking member 250. preferable. Then, while the turntable 30 is stationary, the interlocking member 250 of the external biasing device 50 presses the pressure receiving member 44a and the electrode pressure receiving member 204 of the component holding unit 40A substantially simultaneously. When the external urging device 50 presses the pressure receiving member 44a and the electrode pressure receiving member 204 substantially simultaneously, the holding portion 42 and the electrode roller 210 of the component holding unit 40A descend substantially simultaneously, and first, the lid held by the suction nozzle 42a. 300 is placed on the ceramic container 400 conveyed to the welding region 4. Thereafter, the electrode roller 210 descending together with the suction nozzle 42 a comes into contact with the opposite side of the lid 300.

  After the electrode roller 210 comes into contact with the lid 300 placed on the ceramic container 400, an arbitrary current is passed through the electrode roller 210 by a current generator (not shown) to temporarily connect the ceramic container 400 and the lid 300. Weld and weld. In this state, the ceramic container 400 and the lid 300 are in a state of so-called tack welding only by spot welding at two places where they are in contact. In addition, it is preferable that after the lid 300 is tack-welded to the ceramic container 400 as described above, the weld state of the lid 300 and the ceramic container 400 is photographed by the container confirmation camera 14 and the quality of the welded state is determined. That is, based on the image information of the lid 300 and the ceramic container 400 photographed by the container confirmation camera 14, when it is determined that the welding state is poor due to misalignment or the like, the component holding unit 40 </ b> A waiting in the welding area 4 The lid 42 and the ceramic container 400 that are determined to be defective are adsorbed by the nozzle 42a, and the rotary table 30 is discharged to the waste tray 350 that is waiting at a position rotated counterclockwise by 90 °.

  Next, the turntable 30 rotates approximately 90 degrees counterclockwise again. For the lid 300 that is determined to be incapable of posture control based on the image information captured by the holding posture imaging means 70, the lid 300 is attached at this stage without performing tack welding in the welding region 4. It discharges | emits to the waste tray 350 side (refer the figure (f)).

  As described above, the lid welding apparatus 1 repeats the above operation to take out the lids 300 supplied to the lid supply apparatus 10 in a bulk state one by one in the lid supply region 3 and to make one clockwise or counterclockwise direction. In the welding region 4, the lid 300 is tack-welded to the ceramic container 400. In this lid welding apparatus 1, since the adjustment of the posture of the lid 300 held by the suction nozzle 42 a is performed while the rotary table 30 is rotating, no unnecessary waiting time is generated. For this reason, the lid welding apparatus 1 appropriately takes out one lid 300 from the plurality of lids 300 supplied in a bulk state to the lid supply apparatus 10 and arranges the posture thereof. Can be temporarily attached. Note that the component holding units 40A to 40D in the present embodiment constitute the first component holding unit to the fourth component holding unit of the present invention.

  Further, in the lid welding apparatus 1, a plurality of component holding units 40 having suction nozzles 42 a and electrode rollers 210 are provided in the circumferential direction of the rotary table 30. Therefore, the process in which any one of the component holding units 40 holds the lid 300 by suction and the step in which the other component holding units 40 tack-weld the lid 300 and the ceramic container 400 can be performed simultaneously during the same stationary time.

  In addition, the lid welding apparatus 1 includes posture information acquisition means 70 that acquires posture information of the lid 300 held by any one of the component holding units 40. The posture information acquisition unit 70 acquires posture information such as the direction and angle of the lid 300 sucked by the suction nozzle 42 a in the posture information acquisition region 5. If it is determined that the posture cannot be corrected based on the posture information, the lid 300 is discarded in the discard area 6. From the above, the component holding units 40 are arranged at four positions at 90 ° intervals in the circumferential direction of the turntable 30 so that any one of the component holding units 40 can acquire the lid supply area 3 and the posture information. It is comprised so that it may each be located in the area | region 5, the welding area | region 4, and the discard area | region 6. FIG. Therefore, the step of holding the lid 300, the step of determining the posture information of the lid 300, performing the posture adjustment, the step of tack welding the lid 300 ceramic container 400 after the posture adjustment, and the lid 300 determined to be a posture defect. Can be performed simultaneously at the same rest time. Therefore, the lid welding apparatus 1 can perform operations from the supply of the lid 300 to the tack welding at an extremely high speed by rotating the turntable 30.

  Further, the lid supply area 3, the posture information acquisition area 5, the welding area 4, and the disposal area 6 are provided in this order on the rotation path that rotates in one direction of the component holding unit 40. Therefore, the lid welding apparatus 1 can convey the component holding unit 40 in order from the lid supply area 3 to the disposal area 6 by rotating the turntable 30, and can perform these processes reliably.

  The component holding unit 40 includes a holding part 42 that can move in the vertical direction within the housing 41 and is supported so as to rotate, a holding part rotation driving means 43 that rotates the holding part 42, and a holding part 42. An internal biasing device 45 that biases upward (in the direction of the arm 20) is provided. Further, the component holding unit 40 has an external urging device 50 that presses the pressure receiving member 44 a connected to the holding portion 42 against the urging force of the internal urging device 45 in the lid supply region 3 and the welding region 4. ing. Thereby, the external urging device 50 can push down the holding portion 42 in the downward direction (direction approaching the base 2) by pressing the pressure receiving member 44a. Further, when the pressure applied to the pressure receiving member 44 a by the external urging device 50 is released, the holding portion 42 is pushed upward by the internal urging device 45. Accordingly, the component holding unit 40 drives the external urging device 50 in the lid supply area 3 to lower the suction nozzle 42 a to suck and hold the lid 300, and lowers the suction nozzle 42 a in the welding area 4. The lid 300 can be placed on the ceramic container 400. Therefore, it is not necessary to individually provide each component holding unit 40 with a motor for moving the suction nozzle 42a up and down, thereby simplifying the structure of the apparatus, reducing the size of the apparatus, and reducing the equipment cost. it can.

  The electrode unit 200 includes an electrode pressure receiving member 204, a welding electrode biasing member 208, and an electrode roller 210, and the electrode pressure receiving member 204 is disposed on the casing 41. Are supported so as to be movable in the vertical direction, and are biased upward by the welding electrode biasing member 208. The external urging device 50 in the welding region 4 includes an interlocking member 250 that presses the pressure receiving member 44a and the electrode pressure receiving member 204 substantially simultaneously. As a result, the external urging device 50 can lower the suction nozzle 42a and the electrode roller 210 substantially simultaneously using the interlocking member 250, so that a motor or the like for moving the suction nozzle 42a and the electrode roller 210 up and down is driven. There is no need to provide the means individually, the structure of the component holding unit 40 can be simplified, and the size and cost of the apparatus can be reduced.

  Further, when no external force is applied to the suction nozzle 42 a, the suction nozzle 42 a protrudes downward from the electrode roller 210 (a direction close to the base 2). Thereby, in the lid supply area 3, when the lid 300 is sucked from the lid supply device 10, the electrode roller 210 does not get in the way. Further, when the lid 300 is tack welded to the ceramic container 400, the suction nozzle 42a is first lowered to fix the lid 300 on the ceramic container 400, and the electrode roller 210 is relatively moved while maintaining the state. It is further lowered and comes into contact with the lid 300. Therefore, in the component holding unit 40 of this embodiment, the descending order of the suction nozzle 42a and the electrode roller 210 is mechanically determined, and a device for performing complicated control is not required.

  The multi-head lid welding apparatus 1 using a turret includes a lid supply apparatus 10 that conveys the next lid 300 to the lid supply area 3, and a ceramic container supply apparatus 100 that conveys the ceramic container 400 before welding to the welding area 4. , Is further provided. Therefore, before the rotary table 30 rotates and the arbitrary component holding unit 40 stops in the lid supply area 3, the next lid 300 is supplied to the lid holding position 11. Further, in the multi-head type lid welding apparatus 1 using a turret, the ceramic container supply device 100 attaches the next ceramic container 400 to the welding region 4 before the rotary table 30 rotates and the component holding unit 40 stops in the welding region 4. It is supposed to be moved to. Therefore, useless time can be eliminated and the operation can be speeded up.

  In addition, although the conveying apparatus 1 according to the present embodiment includes the four component holding units 40, the present invention is not limited thereto, and may include other number of component holding units 40. Good.

  Moreover, although the holding | maintenance part 42 has orient | assigned the suction nozzle 42a to the downward direction, it is not limited to this, You may face the suction nozzle 42a to the side or upward. Furthermore, the holding part 42 is not limited to the one provided with the suction nozzle 42a, and may have a structure in which, for example, a component is gripped by a chuck.

  Further, the rotary table 30 is arranged so that the central axis of rotation is in the vertical direction at the operating position, but is not limited to this, and the central axis of rotation at the operating position is horizontal or oblique. It may be arranged so that. Further, the turntable 30 may have a shape other than the shape shown in the present embodiment.

  In addition, the switching valve 37 is shown to shut off the vacuum pump and the suction nozzle 42a and at the same time open the suction nozzle to the atmosphere. However, the present invention is not limited to this, for example, the vacuum pump and the suction nozzle 42a. The nozzle 42a may be shut off and the suction nozzle 42a may be communicated with a high pressure source such as a compressor. By doing so, there is a case where the part can be released from the suction nozzle 42a at a higher speed.

  In the present embodiment, an electromagnetic valve is employed as the switching valve 37, but the present invention is not limited to this, and other switching structures may be employed.

  Further, the alignment tray moving means 102, the posture information acquisition means 70, and the welding inspection apparatus 110 are not limited to those directly controlled by the central control apparatus 90, and each may be provided with a dedicated control apparatus. Good.

  Moreover, the arm 20 is not limited to what is arrange | positioned at the base 2, The thing arrange | positioned at another member and the thing installed independently may be sufficient. Furthermore, the arm 20 may be configured to be able to perform an operation other than swinging. For example, the movement may be only in the vertical direction, or may be swung after linearly moving in the vertical direction. Further, the arm 20 may be configured to swing or rotate around a plurality of different rotation axes.

  Further, the positions of the lid supply area 3, the posture information acquisition area 5, the welding area 4 and the discard area 6 are not limited to the positions shown in the present embodiment, and may be arranged at other positions. . Furthermore, an area for processing and assembling parts and inspecting may be provided in the middle of conveyance.

  Further, the rotation of the turntable 30 is not limited to intermittent rotation that stops every 90 ° rotation, and the component holding unit 40 has a lid supply area 3, a posture information acquisition area 5, a welding area 4, and a disposal area 6. The rotary table 30 may continue to rotate at a low speed even when it is at a position opposite to. In this case, the lid supply device and the ceramic container supply device are preferably rotary tables that rotate in the opposite direction and at the same speed as the rotary table 30. That is, in the lid supply area 3, the suction nozzle 42a arranged on the rotary table 30 moves the lid supplied to the lid supply device that moves at the same direction and at the same speed (rotates in the direction opposite to the rotary table 30). Can be adsorbed during rotation. In the welding region 4, the component holding unit 40 supplies the ceramic container that moves the lid 300 sucked by the suction nozzle 42 a in the same direction and at the same speed as the lid 300 (rotates in the direction opposite to the rotary table 30). It can be welded during rotation to a ceramic container supplied to the apparatus.

  In addition, intermittent rotation of the rotary table 30 may be performed by a cam. In this case, the cam profile is determined so that the rotation stationary position of the rotary table 30 by the cam is the lid supply region 3 and the welding region 4.

  It is preferable that the suction nozzle 42a has elasticity in the vertical direction. For example, the suction nozzle 42a of the second embodiment includes a lower nozzle member 42a1, an upper nozzle member 42a2, and an elastic member 42a3 such as a spring (see FIG. 10). A part of the lower nozzle member 42a1 is configured to be slidable with respect to the upper nozzle member 42a2. An elastic member 42a3 is provided between the lower nozzle member 42a1 and the upper nozzle member 42a2. A packing 42a4 is provided between the outer diameter of the lower nozzle member 42a1 and the inner diameter of the upper nozzle member 42a2. The packing 42a4 prevents air leakage and prevents negative pressure for adsorbing the lid 300 from escaping.

  The elastic member 42a3 is a compression spring, and the lower nozzle member 42a1 is biased in the suction direction with respect to the upper nozzle member 42a2.

  With the above configuration, when the component holding unit 40 welds the lid 300 to the ceramic container 400, the lower nozzle member 42 a 1 of the suction nozzle 42 a receives an impact from the lid 300 by the lid 300 coming into contact with the ceramic container 400. At this time, the lower nozzle member 42a1 slides upward relative to the upper nozzle member 42a2, and the impact is absorbed by the elastic member 42a3. In the first embodiment described above, the suction nozzle 42a is supported by the internal biasing device 45 with elasticity. However, the internal biasing device 45 has to use a hard spring having a large spring coefficient in order to support the holding portion 42 and the bracket 44 having a large mass. Therefore, when a relatively small impact force that can sufficiently deform the thin and long suction nozzle 42a is applied to the suction nozzle 42a, the suction nozzle 42a is deformed before the elasticity of the internal biasing device 45 functions. There is a possibility that.

  Therefore, by providing elasticity to the suction nozzle 42a itself as described above, when the lid 300 and the ceramic container 400 are welded, the elastic member 42a3 appropriately absorbs the relatively small impact force received by the suction nozzle 42a. Can do. Further, when the suction nozzle 42a receives a large impact force, the elastic member 42a3 absorbs the impact force of the suction nozzle 42a in the initial stage where the impact is relatively small, and then the internal biasing device 45 absorbs the large impact force. To do. That is, the impact force received by the suction nozzle 42a can be absorbed stepwise by the elastic member 42a3 and the internal biasing device 45.

  Moreover, although the case where the four component holding units 40 were provided around the turntable 30 at intervals of 90 ° was shown in the above embodiment, the number and arrangement interval of the component holding units 40 are limited to the above embodiment. It is not a thing. For example, as shown in FIG. 11, it is preferable to provide eight component holding units 40 around the rotary table 30 at intervals of 45 °. In the figure, for convenience of explanation, the component holding units 40B to 40H are numbered clockwise with the component holding unit located in the lid supply region 3 as the component holding unit 40A. Further, since the structure and function of each device are the same as those described in the above embodiments, illustration and description are omitted as much as possible.

  First, the component holding unit 40A presses the pressure receiving member 44a by the external urging device 50, lowers the suction nozzle 42a, and sucks and holds the lid 300 conveyed to the lid supply region 3 by the lid supply device 10 (FIG. 11). (See (a)).

  Next, the turntable 30 rotates about 45 ° counterclockwise (see FIG. 5B). The lid supply device 10 includes a lid position confirmation camera disposed on the lid supply region 3 between the interference avoidance space 30A provided between the component holding unit 40A and the component holding unit 40B by the rotation of the rotary table 30. If there is a position shift based on the image information of the position of the lid 300 imaged by 13, the lid 300 is conveyed to the lid supply area 3 while performing position correction. In addition, the component holding unit 40 </ b> B is pressed down by the pressure-applying member 44 a by the external biasing device 50, descends the suction nozzle 42 a, and sucks and holds the lid 300 in the lid supply area 3. In addition, the ceramic container supply device 100 is rotated by the container confirmation camera 14 between the interference avoidance space 30E provided between the component holding unit 40E and the component holding unit 40F by the rotation of the rotary table 30. The position of the ceramic container 400 to be transported is photographed, and when the position of the ceramic container 400 is deviated from the predetermined position, the ceramic container 400 is transported to the welding region 4 while performing position correction. In the following steps, a predetermined position is confirmed by the lid position confirmation camera 13 and the container confirmation camera 14, and the position of the lid 300 in the lid supply area 3 and the position of the ceramic container 400 in the welding area 4 are corrected. However, it is omitted here.

  Thereafter, the rotary table 30 further rotates about 45 ° counterclockwise (see FIG. 5C). At this time, the lid 300 held by the suction nozzle 42a of the component holding unit 40A is positioned in the posture information acquisition region 5, and the posture information acquisition means 70 holds the lid 300 from below the suction nozzle 42a (angle). ) Then, the posture information acquisition unit 70 transmits the captured image information to the central controller 90. Based on the image information, the central control device 90 rotates the suction nozzle 42a of the holding unit 42 by the holding unit rotation driving means 43 to correct the angle of the lid 300 to a predetermined angle. At this time, the lid supply device 10 conveys a new lid 300 to the lid supply region 3. Then, the component holding unit 40 </ b> C in the lid supply region 3 is pressed down by the pressure receiving member 44 a by the external urging device 50, descends the suction nozzle 42 a, and sucks and holds the lid 300 conveyed to the lid supply region 3.

  Thereafter, the rotary table 30 further rotates about 45 ° counterclockwise (see FIG. 4D). At this time, the component holding unit 40B is located in the posture information acquisition area 5. The posture information acquisition unit 70 acquires the image information of the posture of the lid 300 held by the suction nozzle 42 a and transmits it to the central controller 90. The central control device 90 corrects the posture of the lid 300 held by the suction nozzle 42a of the component holding unit 40B based on the image information. Further, the lid supply apparatus 10 conveys a new lid 300 to the lid supply area 3. Then, the component holding unit 40D conveyed to the lid supply area 3 is pressed down by the pressure receiving member 44a by the external urging device 50, descends the suction nozzle 42a, and sucks and holds the lid 300 in the lid supply area 3.

  Thereafter, the rotary table 300 further rotates about 45 ° counterclockwise (see FIG. 12A). The component holding unit 40A simultaneously depresses the pressure receiving member 44a and the two electrode pressure receiving members 204 by the external urging device 50 disposed in the welding region 4, and simultaneously lowers the suction nozzle 42a and the electrode roller 210. Then, the component holding unit 40A mounts the lid 300 held by the suction nozzle 42a on the ceramic container 400 conveyed to the welding region 4, and then contacts the electrode roller 210 from above the lid 300 with a predetermined pressing force. Then, tack welding is performed by passing a welding current. In addition, based on the image information image | photographed with the CCD camera (for example, container confirmation camera 14) etc. which are arrange | positioned in the welding area | region 4, the welding state of the lid 300 and the ceramic container 400 is determined. As a result, when it is determined as a rejected product, the component holding unit 40A rotates with the suction nozzle 42a holding the rejected product of the lid 300 and the ceramic container 400 by suction, and is disposed in the disposal area 6 Carry up to 350. At this time, the component holding unit 40 </ b> C is located in the posture information acquisition area 5. The posture information acquisition unit 70 captures the posture of the lid 300 held by the component holding unit 40 </ b> C and transmits image information to the central control unit 90. The central control unit 90 corrects the posture of the lid 300 held by the suction nozzle 42a of the component holding unit 40C based on the acquired image information. At this time, the lid supply apparatus 10 conveys a new lid 300 to the lid supply area 3. Then, the component holding unit 40E directly above the lid supply area 3 is pressed down by the pressure receiving member 44a by the external biasing device 50, descends the suction nozzle 42a, and sucks and holds the lid 300 in the lid supply area 3.

  Thereafter, the rotary table 300 further rotates about 45 ° counterclockwise (see FIG. 12B). At this time, the component holding unit 40 </ b> B is conveyed onto the welding region 4. The component holding unit 40B simultaneously lowers the suction nozzle 42a and the electrode roller 210 by the external urging device 50. Then, after the lid 300 adsorbed by the adsorption nozzle 42a is mounted on the ceramic container 400 conveyed to the welding region 4, the electrode roller 210 is brought into contact with the lid 300, and a welding current is supplied to the lid 300 and the ceramic. Tack welding of the container 400 is performed. As described above, the welded state of the lid 300 and the ceramic container 400 is photographed with a CCD camera or the like disposed in the welding region 4 to determine whether or not the welded state is acceptable. When it is determined that the welded state of the lid 300 and the ceramic container 400 after the welding is determined to be unacceptable, the component holding unit 40B holds up the rejected product by the suction nozzle 42a up to the disposal tray 350 disposed in the disposal area 6. Transport. At this time, the component holding unit 40 </ b> D is located in the posture information acquisition area 5. The posture information acquisition unit 70 captures the posture of the lid 300 held by the component holding unit 40 </ b> D and transmits the image information to the central control unit 90. The central control unit 90 corrects the posture of the lid 300 held by the suction nozzle 42a of the component holding unit 40D based on the acquired image information. At this time, the lid supply apparatus 10 conveys a new lid 300 to the lid supply area 3. Then, the component holding unit 40F directly above the lid supply area 3 is pressed down by the pressure receiving member 44a by the external urging device 50, descends the suction nozzle 42a, and holds the lid 300 in the lid supply area 3 by suction.

  Thereafter, the rotary table 300 further rotates about 45 ° counterclockwise (see FIG. 12C). The component holding unit 40 </ b> A is transported onto the disposal area 6. Here, the component holding unit 40 </ b> A discharges the rejected product to the disposal tray 350 disposed in the disposal area 6 when the rejected product of the lid 300 and the ceramic container 400 is retained. At this time, the component holding unit 40 </ b> C is disposed in the welding region 4. And the ceramic container 400 conveyed to the welding area | region 4 by the ceramic container supply apparatus 100 and the lid 300 which the own adsorption nozzle 42a hold | maintains are welded. When the welding state is confirmed by a CCD camera or the like and determined as a defective product, the component holding unit 40C sucks and holds the defective welding product by the suction nozzle 42a, rotates as it is, and is disposed in the disposal area 6. The defective product is conveyed to the disposal tray 350. At this time, the component holding unit 40E is located in the posture information acquisition area 5. The attitude of the lid 300 held by the suction nozzle 42a of the component holding unit 40E is imaged by the attitude information acquisition means 70. Then, the central controller 90 corrects the attitude of the lid 300 by rotating the suction nozzle 42a of the component holding unit 40E based on the image information of the captured lid 300. Further, at this time, the component holding unit 40G sucks the lid 300 conveyed to the lid supply region 3 by the lid supply device 10 while the turntable 30 is rotating.

  Thereafter, the rotary table 300 further rotates about 45 ° counterclockwise (see FIG. 12D). At this time, when the component holding unit 40B is located in the disposal area 6 and the component holding unit 40B holds the defective product of the lid 300 and the ceramic container 400, the defective product is placed in the disposal tray 350 disposed in the disposal region 6. Release. At this time, the component holding unit 40 </ b> D is located in the welding region 4. The component holding unit 40D mounts the lid 300 held by itself on the ceramic container 400 conveyed to the welding region 4 by the ceramic container supply device 100 while the turntable 30 is rotating, and then temporarily attaches it. Weld. The central control unit 90 determines whether the welded state of the lid 300 and the ceramic container 400 is acceptable or not based on image information captured by a CCD camera or the like. The rejected product is sucked and held by the suction nozzle 42 a and is transported as it is to the disposal tray 350 arranged in the disposal area 6. Further, at this time, the component holding unit 40F performs the posture correction of the lid 300 by rotating the suction nozzle 42a when the posture is deviated based on the posture information of the lid 300 held by the suction nozzle 42a. . At this time, the lid supply device 10 conveys a new lid 300 to the lid supply region 3 while the turntable 30 is rotating. Then, the component holding unit 40 </ b> F transported to the lid supply area 3 sucks and holds the lid 300 transported to the lid supply area 3.

  Next, when the turntable 30 is rotated, the component holding unit 40 </ b> A is rotated once and conveyed to the lid supply area 3. Thereafter, the same process as described above is performed on each component holding unit.

  That is, the multi-head type lid welding apparatus using the turret according to the above-described embodiment is provided with the component holding unit 40 having the same configuration around the rotary table 30, and each component holding unit 40 has a holding portion 42 at the tip. A driving mechanism (for example, holding unit rotation driving means 43) for rotating the provided suction nozzle 42a is individually provided. In addition, each component holding unit 40 holds the holding portion 42 so as to be reciprocally movable by a slide mechanism for sliding the suction nozzle 42 a (for example, a support member 41 </ b> A provided in the housing 41, and is connected to the holding portion 42. A structure in which the holding portion 42 is reciprocated in the vertical direction by moving the pressure receiving member 44 a of the bracket 44 up and down is provided. On the other hand, the driving device (for example, the external biasing device 50) that moves the suction nozzle 42a or the electrode roller 210 up and down is provided on the lid supply region 3 and the welding region 4 and separately from the component holding unit 40. It has been. Therefore, in the multi-head type lid welding apparatus using the turret according to the above-described embodiment, by providing the component holding unit 40 having exactly the same composition around the rotary table 30, all the component holding units 40 are equally attracted and held by the lid. Posture adjustment and tack welding of the lid and the ceramic container can be performed, and each process can be executed efficiently and at high speed.

  Further, as shown in the above embodiment, the lid supply region 3, the posture information acquisition region 5, the welding region 4, and the disposal region 6 are provided in order on the rotation path that rotates in one direction of the suction nozzle 42a of the component holding unit 40. When one component holding unit 40 is located in any one area (for example, the lid supply area 3), the other component holding units 40 are located in at least the other three areas. In other words, a plurality of processes can be performed simultaneously, and the process from the supply of the lid to the welding can be performed at high speed.

  In the above description, the case where the lid 300 is welded to the ceramic container 400 has been described. Needless to say, there is a similar effect when subjected to an impact.

  The multi-head type lid welding apparatus using the turret of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

  The present invention can be widely used in the field of welding of electronic components such as a package and a lid.

DESCRIPTION OF SYMBOLS 1 Multiple head type lid welding apparatus by turret 3 Lid supply area 4 Welding area 5 Attitude information acquisition area 6 Disposal area 10 Lid supply apparatus 20 Arm 30 Rotary table 40 Parts holding unit 42a Adsorption nozzle 50 External biasing device 60 Rotary table drive means 70 posture information acquisition means 80 swing means 90 central control device 100 ceramic container supply device 200 electrode unit 210 electrode roller 220 electrode holding device 300 lid 350 waste tray 400 ceramic container

Claims (9)

A rotary table that rotates in one direction, clockwise or counterclockwise;
A plurality of lid holding means provided in the circumferential direction of the rotary table, and a component holding unit having a welding electrode adjacent to the lid holding means;
A lid supply device that conveys a lid before welding to a lid supply region located on a rotation path of the component holding unit by rotation of the rotary table;
A container supply device that conveys a container before welding to a welding region located on the rotation path of the component holding unit;
With
When the lid holding means of one of the component holding units is positioned on the lid supply region by rotating the rotary table, the lid holding means of at least one other component holding unit is: A multi-head type lid welding apparatus using a turret, which is located on the welding region in a state where the lid is held. The component holding unit includes a lid holding means rotating device that supports the lid holding means so as to be rotatable and slidable in the lid direction, and rotates the lid holding means.
A multi-head lid welding apparatus using the turret according to claim 1. The component holding unit includes a lid holding means guide member that slidably supports the lid holding means, and a lid holding means urging member that urges the lid holding means in a push-up direction.
Further, on the lid supply area and the welding area, pressing devices for pressing down the lid holding means are respectively fixedly arranged.
The pressing device pushes down the lid holding means against the urging force of the lid holding means urging member, thereby holding the lid in the lid supply region and the lid to the container in the welding region. It is characterized by mounting,
A multi-head type lid welding apparatus using the turret according to claim 1. The component holding unit includes a welding electrode guide member that slidably supports the welding electrode, and a welding electrode biasing member that biases the welding electrode in a push-up direction,
The pressing device on the component holding unit or the welding area is provided with an interlocking mechanism that slides the lid holding means and the welding electrode simultaneously,
The lid holding means and the welding electrode are simultaneously pressed down by the pressing device on the welding region applying a pressing force to the component holding unit,
A multi-head lid welding apparatus using the turret according to claim 3. In the posture information acquisition region located on the rotation path of the component holding unit, further comprising posture information acquisition means for acquiring posture information of the lid held by the component holding unit,
At least three of the component holding units are configured to be simultaneously positioned in the lid supply region, the welding region, and the posture information acquisition region,
A multi-head lid welding apparatus using the turret according to any one of claims 1 to 4. Further comprising posture determination means for determining the quality of the lid posture based on the posture information;
On the rotation path of the component holding unit, a disposal area for discarding the lid determined to be a defective posture by the posture determination means is provided,
The component holding units are disposed at at least four locations at regular intervals in the circumferential direction of the rotary table,
The four component holding units are simultaneously located in the lid supply region, the posture information acquisition region, the welding region, and the disposal region,
A multi-head lid welding apparatus using the turret according to claim 5. The lid supply region, the posture information acquisition region, the welding region, and the disposal region are provided on the rotation path of the component holding unit in this order in one direction clockwise or counterclockwise. Features
A multi-head lid welding apparatus using the turret according to claim 6. The component holding unit slides only the welding electrode to bring the welding electrode into contact with the lid on the container when the lid held by the lid holding means comes into contact with the container. Features
A multi-head lid welding apparatus using the turret according to any one of claims 1 to 7. The lid holding means is provided at a position closer to the container than the welding electrode,
The lid holding means and the welding electrode are configured to slide individually along the lid holding means guide member and the welding electrode guide member,
In the welding region, when the lid holding means and the welding electrode are pressed down simultaneously by the interlocking mechanism of the pressing device provided on the welding region, the lid is held by contacting the container with the lid. The means moves upward relative to the welding electrode along the lid holding means guide member, and the welding electrode contacts the lid to weld the lid and the container. To
A multi-head lid welding apparatus using the turret according to any one of claims 4 to 8.

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