Plug insertion device

Abstract

To provide a plug insertion device capable of inserting a plug into attachment.SOLUTION: A plug insertion device 1 for inserting a plug P from an outer peripheral surface of a bottom surface of a container storing molten metal, comprises: a support member 10 that supports a plug P; a coiled spring (buffer member) 21 that supports the support member in a movable state in an inserting direction and absorbs a positional deviation between a metal fixture 13 and the support member; position-fixing means that fixes the position of the metal fixture in a state contacting an outer peripheral surface of the container; an insertion device (insertion means) that transfers the support member staying in an insertable position to a direction approaching the container and inserts the plug to the container; a laser sensor 25 (positioning means) that is provided integrally with the metal fixture and positions the plug relative to the container; and a carriage 28 (transfer means) that transfers the support member to a position for insertion to the container.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a plug insertion device for inserting and attaching a plug to a container for storing molten metal.

Background Art

[0002] A container for storing molten metal such as a ladle is provided with a nozzle at the bottom as a mechanism for discharging the molten metal from the container. This nozzle has an upper nozzle inserted from the outer peripheral surface of the bottom surface of the container.

[0003] A container for storing molten metal wears severely each time the stored molten metal is discharged. For this reason, replacement of the nozzle (upper nozzle) is required. And the insertion of the nozzle (upper nozzle) is mainly performed manually, and the development of a device is demanded.

[0004] In response to this problem, for example, there is a nozzle construction device and a construction method described in Patent Document 1. Patent Document 1 discloses a construction device and a construction method for suppressing leakage of molten steel from the gap between the upper nozzle and the molten metal container by means of a heat-resistant packing.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, the conventional technology requires a heat-resistant packing and a large pressing force is required when assembling the upper nozzle. Accordingly, the cost imposed on the container has been high. In particular, in a container in which the space between the inner refractory and the upper nozzle is filled with mortar, it has been difficult to apply the conventional technology. Therefore, the insertion of the upper nozzle into the container filled with mortar between the inner refractory and the upper nozzle is performed manually. That is, the load required for the insertion work (the load on the operator's work) has been large. In addition, this container is provided with a plug for supplying gas to the stored molten metal. This plug is also inserted and assembled in the same manner as the upper nozzle. The present invention has been made in view of the above circumstances, and an object thereof is to provide a plug insertion device capable of inserting and attaching a plug (upper nozzle) into a container without using a packing.

Means for Solving the Problems

[0007] The plug insertion device of the present invention for solving the above problems is a plug insertion device for inserting a plug from the outer peripheral surface of the bottom surface of a container for storing molten metal, and includes a support member for supporting the plug inserted into the container, and the support member is supported in a state movable in the insertion direction, and a pad that abuts against the outer peripheral surface of the container when the plug is inserted, and a buffer member that absorbs the displacement of the positions of the pad and the support member when the pad abuts against the outer peripheral surface of the container, and a position fixing means for fixing the position of the pad in a state where the pad abuts against the outer peripheral surface of the container, and an insertion means for shifting the support means in a position where it can be inserted in a direction approaching the container to insert the plug into the container, and a positioning means provided integrally with the pad for positioning the position of the plug with respect to the container, and a shifting means for shifting the support member to a position where it can be inserted into the container.

[0008] In the plug insertion device of the present invention, when the pad abuts against the outer peripheral surface of the container, the buffer member absorbs the displacement of the position, so that the plug supported by the pad via the support member can be arranged in the position in the insertion direction. And, in the plug insertion device of the present invention, since the position fixing means fixes the pad in this state, the plug can be inserted while suppressing the positional displacement of the plug. As a result, the plug insertion device of the present invention can insert the plug (nozzle) into the container.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

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Figure 8

Mode for Carrying Out the Invention

[0010] Hereinafter, the present invention will be described using embodiments. [Embodiment] The plug insertion device 1 of this embodiment includes a support member 10, a pad 13, a coil spring 21, a position fixing means 26, an insertion device 34, a laser sensor 25, and a carriage 28. The plug insertion device 1 of this embodiment is shown in a perspective view in FIGS. 1 and 2, in a side view in FIG. 3, in a cross-sectional view (a cross-sectional view taken along line IV-IV in FIG. 1) in FIG. 4, and in a front view (a view of the main part when viewed from the tip direction) in FIG. 5, respectively. Note that FIG. 1 is a perspective view from the diagonally forward in the tip direction, and FIG. 2 is a perspective view from the diagonally backward in the tip direction. Here, the tip direction in this embodiment indicates the insertion direction when inserting the plug P. The tip direction is the axial direction of the plug P and is also the direction when the plug P approaches the container L. The base end direction indicates the direction in which the plug P separates from the container. The vertical direction corresponds to the vertical direction in FIG. 3 and is the vertical direction.

[0011] The plug insertion device 1 of this embodiment is a plug insertion device that inserts a plug P from the outer peripheral surface of the bottom surface of a container L that stores molten metal. The support member 10 is a member that supports the plug P. The support member 10 supports the base end portion of the plug P in a state where the axial direction of the plug P is along the tip - base end direction. The support member 10 supports the plug P when inserting it into the container L and releases the support after the insertion into the container L is completed. The support member 10 of this embodiment supports from the inner peripheral surface with the axis of the tubular plug P. The mechanism by which the support member 10 supports the base end portion of the plug P is not limited. For example, it may be a mechanism that clamps the base end portion of the plug P from the outer periphery. The support member 10 has a plug support portion 11 that supports the base end portion of the plug P, and a rod - shaped rod portion 12 that extends along the base end direction from the plug support portion 11. The rod portion 12 is composed of a rod - shaped member that extends along the central axis of the plug P supported by the plug support portion 11.

[0012] The fitting 13 is a member that supports the support member 10 in a state where it can move in the insertion direction and abuts against the outer peripheral surface of the container L when inserting the plug P. The fitting 13 is a member (a metal member) having a U - shaped cross - section when viewed from above. The fitting 13 is formed in a shape that can accommodate the plug P supported by the support member 10 inside the U - shape. That is, the depth from the opening of the U - shaped fitting 13 is longer than the axial length of the plug P. The tip portions (both end portions forming the opening of the U - shape) of the fitting 13 abut against the outer peripheral surface of the container L.

[0013] A guide cylinder portion 14 that extends along the base end direction is integrally provided at the base end portion of the fitting 13. The guide cylinder portion 14 is provided with the rod portion 12 passing through its interior. The guide cylinder portion 14 is formed shorter than the length of the rod portion 12.

[0014] The support member 10, the fitting 13, and the guide cylinder portion 14 are held in a swingable state on the base material 22 via a left - right swing base material 15 and an up - down swing base material 17. The left - right swing base material 15 is a substantially plate - shaped member that holds the guide cylinder part 14 on its upper surface. The left - right swing base material 15 is arranged on the up - down swing base material 17. The left - right swing base material 15 is arranged such that the tip end can swing in the left - right direction around the swing center 16 provided at the base end. The mechanism for enabling the left - right swing base material 15 to swing in the left - right direction is not limited. In this embodiment, it is a mechanism in which a pin provided on the left - right swing base material 15 is rotatably inserted into a hole formed in the bottom part 18 of the up - down swing base material 17.

[0015] The up - down swing base material 17 has a substantially flat - plate - shaped bottom part 18, a pair of wall parts 19, 19 erected from the side ends of the bottom part 18, a connecting part 20 and a handle 24 that connect to the base material 22 provided on the base - end side of the bottom part 18. Below the vicinity of the end on the tip - end side of the bottom part 18, a coil spring 21 (21A, 21B, 21AB) is arranged. The end on the tip - end side of the bottom part 18 is held in a state of being spaced apart from the upper surface of the base material 22 by the coil springs 21A, 21B, 21AB. The pair of wall parts 19, 19 are erected and provided at positions spaced apart from the guide cylinder part 14 near the end on the tip - end side where the coil springs 21A, 21B are provided. The erected tip ends (upper ends) of the pair of wall parts 19, 19 protrude above the guide cylinder part 14. Between the side surfaces of the pair of wall parts 19, 19 and the guide cylinder part 14, a coil spring 21 (21C, 21D) is arranged. The upper ends of the pair of wall parts 19, 19 are connected by a rod - shaped member. And a laser sensor 25 is provided on the rod - shaped member. The laser sensor 25 is a sensor for measuring the position of the support member 10 (particularly, the plug support portion 11 and the plug P supported thereby) (the relative position with respect to the container L). The laser sensor 25 is a device that emits laser light in the tip direction. The laser light emitted by the laser sensor 25 is emitted parallel to the tip-base direction. The laser light emitted by the laser sensor 25 is irradiated toward the outer peripheral surface of the container L, and the deviation of the position (relative position) of the support member 10 is confirmed based on whether the position where the laser light hits is a predetermined position. For example, a positioning marker (+ cross marker) is provided on the outer peripheral surface of the container L, and the position of the support member 10 is adjusted so that the laser light irradiated by the laser sensor 25 hits this marker.

[0016] The connecting portion 20 is a portion provided on the base end side of the bottom portion 18 for connecting the bottom portion 18 to the base material 22. The connecting portion 20 connects the tip portion of the bottom portion 18 to the base material 22 so as to be swingable in the vertical direction. The mechanism for enabling the vertical swing base material 17 to swing in the vertical direction is not limited. In this embodiment, a hole is formed that penetrates a protruding portion protruding from the bottom portion 18 of the vertical swing base material 17 in the direction of the base material 22 and a protruding portion protruding from the upper surface of the base material 22, and a pin-shaped member is passed through this hole to enable swinging about the pin-shaped member.

[0017] A pair of guide members 23, 23 erected upward are arranged on the base material 22. The pair of guide members 23, 23 are formed in a state of abutting against both side surfaces of the pair of wall portions 19, 19. The pair of guide members 23, 23 restrict the lateral displacement of the wall portions 19, 19. The base material 22 is placed on the cart in a state movable in the tip-base direction.

[0018] The base material 22 is provided with position fixing means 26 for fixing the position with respect to the cart 28. The position fixing means 26 includes a wall portion 29 fixed to the mounting portion 30 and a disk portion 27 that fixes its position by pressing against the wall portion 29. The disk portion 27 is a plate-shaped member provided in a state parallel to the wall portion 29 erected on the mounting portion 30. The disk portion 27 is fixed in an integrated state with the base material 22. When the disk portion 27 is pressed against the wall portion 29, the position with respect to the carriage 28 is fixed. The shape and size of the disk portion 27 are not limited, and any shape and size that can fix the position of the base material 22 when pressed against the wall portion 29 are acceptable. The device for pressing the disk portion 27 against the wall portion 29 is also not limited.

[0019] The carriage 28 is a device for moving the plug insertion device 1 of the present embodiment. The carriage 28 includes a mounting portion 30 on which the base material 22 is mounted, a vertical position displacement portion 31 that moves the mounting portion 30 up and down, and a transport portion 32 for moving the plug insertion device 1 of the present embodiment. The wall portion 29 is provided on the mounting portion 30.

[0020] The mounting portion 30 supports the base material 22 in a slidable state along the tip - base end direction. The mechanism by which the mounting portion 30 supports the base material 22 is not limited. In the present embodiment, the mounting portion 30 is formed of a frame-shaped member, and ridges protruding inward are provided on the inner peripheral surface of the frame-shaped member in a state extending along the tip - base end direction, and rotating rollers are provided so as to sandwich these ridges on the base material 22.

[0021] The transport portion 32 has wheels for moving the carriage 28. The transport portion 32 has a handle 33 for operating the moving direction of the carriage 28. The transport portion 32 moves the carriage 28 by pushing and pulling the handle 33.

[0022] The vertical position displacement portion 31 is fixed to the transport portion 32 and is a device for moving the mounting portion 30 up and down. By moving the mounting portion 30 up and down by the vertical position displacement portion 31, the vertical position of the base material 22 mounted on the mounting portion 30 can be adjusted to a predetermined position. The vertical position shifting part 31 is not limited as long as it is a device capable of moving the mounting part 30 vertically. In this embodiment, a cylinder (piston) that moves vertically in the vertical direction is used. The vertical position shifting part 31 of this embodiment is provided at the tip of the carriage 28 and shifts the mounting part 30 in the vertical direction.

[0023] The carriage 28 of this embodiment moves the mounting part 30 in the vertical direction, but may further have a configuration that allows it to move (swing) in the horizontal direction. By doing so, positioning can be performed more easily. The carriage 28 has a brake (not shown). Here, the brake is a device that not only decelerates the moving speed of the carriage 28 but also holds it in a stopped state. Although the carriage 28 of this embodiment is manually moved, the conveying part 32 may be configured to be moved by a driving device such as a motor. An insertion device 34 for inserting the plug P by pushing the rod part 12 of the support member 10 in the tip direction is provided on the base end side of the support member 10 on the mounting part 30 of the carriage 28.

[0024] The insertion device 34 includes a motor 36 that rotates the pinion gear 35, a plate-shaped rack gear 37 that is screwed to the pinion gear 35 and moves in the tip direction, and a pressing mechanism 38 that presses the base end part of the rod part 12 provided on the rack gear 37.

[0025] The motor 36 is fixed on the mounting part 30 of the carriage 28 with its rotation axis facing in a direction perpendicular to the tip-base end direction. When the motor 36 rotates, the pinion gear 35 provided on its rotation axis also rotates around the rotation axis. When the pinion gear 35 rotates, the rack gear 37 screwed to the pinion gear 35 moves in the tip direction. The pressing mechanism 38 includes a pair of wall parts 39A and 39B provided on the upper surface of the rack gear 37, and a pressing fitting 40 provided on one of the wall parts 39A so as to be swingable in the vertical direction.

[0026] A pair of wall portions 39A and 39B are erected on the upper surface of the rack gear 37 at an interval such that the rod portion 12 can be inserted therebetween. The pressing fitting 40 is formed in a plate shape capable of closing the gap between the pair of wall portions 39A and 39B. The pressing fitting 40 is provided on one of the wall portions 39A in a swingable state, and in a state where the rod portion 12 is inserted between the pair of wall portions 39A and 39B, it is flipped upward above the rod portion 12. The pressing fitting 40 is in a state of closing the gap between the pair of wall portions 39A and 39B when the rod portion 12 is not inserted between the pair of wall portions 39A and 39B. When the rack gear 37 moves in the tip direction with the pressing fitting 40 closing the gap between the pair of wall portions 39A and 39B, the pressing fitting 40 presses the base end portion of the rod portion 12, and the support member 10 is displaced in the tip direction to insert the plug P into the container L.

[0027] The container L has a trough-like shape capable of storing molten metal therein, and is not limited as long as the plug P can be assembled thereto. For example, a ladle can be used. The container L has an iron skin forming an outer peripheral surface and a refractory forming an inner peripheral surface inside the iron skin.

[0028] The plug P is inserted and assembled from the outer peripheral surface of the bottom surface of the container L. The plug P can be, for example, an upper nozzle or a gas blowing plug. The upper nozzle is a tubular member forming a flow path for discharging molten metal provided in the sliding nozzle of the ladle, and is a member protruding inward from the outer peripheral surface of the ladle.

[0029] (Operation) The operation of the plug insertion device 1 of this embodiment will be described below.

[0030] (Installation of Plug) Prepare the support member 10 and the plug P. Support the base end portion of the plug P by the plug support portion 11. Assemble the support member 10 that supports the plug P to the plug insertion device 1. Specifically, insert the rod portion 12 into the fitting 13 and the guide cylinder portion 14 from the tip direction. At this time, the base material 22 (and the fitting 13) is slid to the proximal end side by pulling the handle 24. The rack gear 37 is also arranged on the proximal end side. The support member 10 is inserted in a state where the pressing fitting 40 of the pressing mechanism 38 is bounced up. When the support member 10 is inserted and assembled, the fitting 13 and the rack gear 37 are arranged on the proximal end side. The plug P supported by the support member 10 is arranged in a state of being housed inside the fitting 13 (the state shown in FIGS. 1 to 4).

[0031] (Movement and positioning of the carriage) Using the transport section 32 and the vertical displacement section 31 of the carriage 28, move the plug insertion device 1 to a position where the plug P can be inserted into the through hole of the container L. Specifically, operate the handle 33 to shift the tip of the fitting 13 to a position where it can contact the outer peripheral surface of the container L. Operate the vertical displacement section 31 to move the placement section 30 up and down for positioning. Specifically, use the laser sensor 25 to measure the position of the plug P (the support member 10 that supports it) with respect to the container L, and operate the transport section 32 and the vertical displacement section 31 to accurately position the plug P. More specifically, provide a positioning marker (+ cross marker) on the outer peripheral surface of the container L, and operate the transport section 32 and the vertical displacement section 31 so that the laser light irradiated by the laser sensor 25 hits this marker.

[0032] (Insertion of the plug) Operate the handle 24 to slide the base material 22 in the tip direction. As the base material 22 slides, the tip portions of the attachment fitting 13 (specifically, both tip portions of the U-shaped configuration) come into contact with the outer peripheral surface of the container L. Here, even if the attachment fitting 13 is slightly inclined with respect to the outer peripheral surface of the container L, the coil springs 21 (21A, 21B, 21AB, 21C, 21D) absorb (buffer) the displacement. More specifically, when inclined in the left-right direction, the coil spring 21C compresses (the coil spring 21D extends), or elastically deforms so that the coil spring 21D compresses (the coil spring 21C extends) to absorb the respective displacements. When inclined in the up-down direction, the coil springs 21A and 21B compress, or elastically deform so that the coil springs 21A and 21B extend to absorb the respective displacements. Then, in this state, the position fixing means 26 is operated to fix the position of the vertically swingable base material 17. Specifically, the disk portion 27 is fixed in a state of being pressed against the wall portion 29, and the vertically swingable base material 17 is fixed to the placement portion 30. In the plug insertion device 1 of this embodiment, when the base material 22 is slid in the tip direction, the base end portion of the rod portion 12 has shifted in the tip direction from the pressing fitting 40 of the pressing mechanism 38. At this time, the pressing fitting 40 is in a state of closing the gap between the pair of wall portions 39A and 39B (the state shown in FIG. 6).

[0033] Subsequently, the insertion device 34 is operated to insert the plug P into the through hole of the container L. The motor 36 of the insertion device 34 is rotated. The pinion gear 35 provided on the rotation shaft of the motor 36 also rotates about the rotation shaft. When the pinion gear 35 rotates, the rack gear 37 screwed to the pinion gear 35 moves in the tip direction. When the rack gear 37 moves, the pressing mechanism 38 and the pressing fitting 40 provided on the rack gear 37 also move in the tip direction. As the pressing fitting 40 moves, it comes into contact with the base end portion of the rod portion 12 and presses the rod portion 12 in the tip direction. That is, the plug P is pressed in the tip direction and the plug P moves. Then, the plug P is further pressed in the tip direction and inserted into the through hole of the container L. When the plug P is completely inserted into the through hole of the container L, the motor 36 is stopped (the state shown in FIGS. 7 to 8).

[0034] (Removal of the device) When the plug P is completely inserted into the through hole, the support of the plug P by the support member 10 is released. Rotate the motor 36 in the reverse direction to shift the support member 10 in the proximal end direction and accommodate the plug support portion 11 inside the U-shaped portion of the fitting 13. Using the transport unit 32 of the carriage 28, move the plug insertion device 1 to a position away from the container L. As described above, with the plug insertion device 1 of the present embodiment, the plug P can be introduced into the container L.

[0035] (Effect) The plug insertion device 1 of the present embodiment is a plug insertion device 1 that inserts the plug P from the outer peripheral surface of the bottom surface of the container L that stores the molten metal. The plug insertion device 1 of the present embodiment includes a support member 10 that supports the plug P to be inserted into the container L, a fitting 13 that supports the support member 10 in a state where it can move in the insertion direction and abuts against the outer peripheral surface of the container L when inserting the plug P, a coil spring 21 (21A, 21B, 21AB, 21C, 21D) (buffer member) that absorbs the displacement of the positions of the fitting 13 and the support member 10 when the fitting 13 abuts against the outer peripheral surface of the container L, a position fixing means 26 that fixes the position of the fitting 13 in a state where it abuts against the outer peripheral surface of the container L, an insertion device 34 (insertion means) that shifts the support member 10 in a position where it can be inserted in a direction approaching the container L to insert the plug P into the container L, a laser sensor 25 (positioning means) that is provided integrally with the fitting 13 and positions the plug P with respect to the container L, and a carriage 28 (shifting means) that shifts the support member 10 to a position where it can be inserted into the container L. When the fitting 13 abuts against the outer peripheral surface of the container L in the plug insertion device 1 of the present embodiment, the coil spring 21 (buffer member) absorbs the displacement of the position, so that the plug P supported by the fitting 13 can be arranged at the position in the insertion direction. And, in the plug insertion device 1 of the present embodiment, since the position fixing means 26 fixes the fitting 13 in this state, the plug P can be inserted while suppressing the position displacement of the plug P. As a result, the plug insertion device 1 of the present embodiment can insert the plug P into the container L.

[0036] In the plug insertion device 1 of this embodiment, the position fixing means 26 includes a disk portion 27 provided integrally with the pad 13, and a wall portion 29 against which the disk portion 27 provided integrally with the other end side of the pad 13 of the coil spring 21 (buffer member) is pressed and fixed. According to this configuration, with a simple configuration, the position of the pad 13 can be fixed in a state where it is in contact with the outer peripheral surface of the container L.

[0037] The plug insertion device 1 of this embodiment is fixed to the carriage 28. According to this configuration, the plug insertion device 1 can be moved, and the plug P can be assembled at a position away from the container L. That is, the work for assembling the plug P to the plug insertion device 1 can be performed without being interfered by the container L, and the workability is improved.

[0038] [Variant form] The plug insertion device 1 of this embodiment has the same configuration as the embodiment except that the position fixing means is an adsorption means for adsorbing and fixing to the outer peripheral surface of the container L provided at the tip of the pad 13 (the contact portion where the pad 13 contacts the outer peripheral surface of the container L).

[0039] The adsorption means is a mechanism that is fixed in a state of contacting the outer peripheral surface (iron sheet) of the container L. It is preferable that the adsorption means does not adsorb to the outer peripheral surface (iron sheet) of the container L except when the plug P is inserted. In this embodiment, an electromagnet is used for the adsorption means.

[0040] The plug insertion device 1 of this embodiment has an electromagnet (position holding means) at the tip of the pad 13 for holding the position with respect to the container L in a detachable state with respect to the outer peripheral surface of the container L. According to this configuration, the plug insertion device 1 of this embodiment can hold (fix) the position of the pad 13 with respect to the container L (that is, the through hole) when the plug P is inserted into the through hole of the container L, and can suppress the positional deviation of the plug P.

[0041] [Other forms] In each of the above-described embodiments, the fitting 13 is a member having a U-shape when viewed from above, but may also be a member having a U-shape when viewed from the side. Even if the fitting 13 is a member having a U-shape when viewed from the side, the same effects as those of the above-described embodiments can be exhibited. In each of the above-described embodiments, each part of the plug insertion device 1 can be appropriately changed to a device (mechanism) that exhibits the same function. That is, the operation of each part can be appropriately selected from manual, motor, actuator, cylinder (piston), etc. Even if these are selected, the same effects as those of the above-described embodiments can be exhibited. Also, when the operation of each part is performed by a machine, the respective machines can operate in conjunction with each other by a control device.

Explanation of Reference Numerals

[0042] 1: Plug insertion device, 10: Support member, 11: Plug support part, 12: Rod part, 13: Fitting, 14: Guide cylinder part, 15: Left and right swing base material, 16: Swing center, 17: Up and down swing base material, 18: Bottom, 19: Wall part, 20: Connection part, 21: Coil spring, 22: Base material, 23: Guide member, 24: Handle, 25: Laser sensor, 26: Position fixing means, 27: Disk part, 28: Cart, 29: Wall part, 30: Mounting part, 31: Up and down position shifting part, 32: Conveying part, 33: Handle, 34: Insertion device, 35: Pinion gear, 36: Motor, 37: Rack gear, 38: Pressing mechanism, 39: Wall part, 40: Pressing fitting, L: Container, P: Plug.

Claims

1. A plug insertion device for inserting a plug from the outer peripheral surface of the bottom of a container for storing molten metal, comprising: a support member for supporting the plug to be inserted into the container; a fitting that supports the support member so as to be movable in the insertion direction and abuts against the outer peripheral surface of the container when the plug is inserted; a buffer member that absorbs a displacement in the positions of the fitting and the support member when the fitting abuts against the outer peripheral surface of the container; position fixing means for fixing the position of the fitting in a state where the fitting abuts against the outer peripheral surface of the container; insertion means for shifting the support member in a position where it can be inserted closer to the container to insert the plug into the container; positioning means provided integrally with the fitting for positioning the plug with respect to the container; shifting means for shifting the support member to a position where it can be inserted into the container; A plug insertion device, characterized by comprising the above.

2. The buffer member is attached to the fitting from one end side thereof, The position fixing means includes: a disk portion provided integrally with the fitting via the buffer member at the other end of the buffer member; The plug insertion device according to claim 1, further comprising a wall portion against which the disk portion is pressed and fixed.

3. The position fixing means is provided at a contact portion where the fitting abuts against the outer peripheral surface of the container, The plug insertion device according to claim 1, further comprising suction means for suctioning the container in a detachable state on the outer peripheral surface of the container.

4. The shifting means is a carriage. The plug insertion device according to any one of claims 1 to 3.

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