JP2004195556A - Assembling arrangement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an assembling arrangement having high productivity, and individually adjusting fastening strength in the assembling device usable as an automatic assembling device of a syringe. <P>SOLUTION: A gasket 106 is inserted into a barrel 101 of the syringe 100. A screw part 110 of a plunger rod 108 is threadedly engaged and fastened to a screw part 107 of this gasket 106. The assembling device 1 has a continuously rotating turret 20 and a reciprocatably rotating rotary shuttle 30. A holding part 40 arranged in the turret 20 rotatably holds the barrel 101, and a holding part 50 similarly arranged in the turret 20 nonrotatably holds the plunger rod 108. The rotary shuttle 30 has a rotation transfer means 60, and follows the turret 20 for a prescribed period, and rotates the barrel 101 by contacting the rotation transfer means 60 with the barrel 101 in this follow-up period, and fastens the barrel 101 and the plunger rod 108. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an assembling apparatus. In this assembling apparatus, a second component having a second threaded portion at the center of the axis is screwed to a first component having a first threaded portion at the center of the axis, the second component having a first threaded portion at the center of the axis. It is to tighten. A first part is a syringe barrel, a second part is a syringe plunger rod, a first thread is a thread provided on a gasket in the barrel, and a second thread is the plunger rod. Since it is a threaded portion at the tip of, it can be applied to a syringe assembling apparatus used for medical treatment.
[0002]
[Prior art]
In recent years, a syringe (prefilled syringe) filled with a drug solution in advance is used to inject the drug solution. FIG. 8 is a partial sectional side view showing an example of the structure of the syringe. The syringe 100 includes a barrel 101 made of a synthetic resin. The basic shape of the barrel 101 is cylindrical. A luer taper portion for attaching an injection needle is provided at one end of the barrel 101. The luer taper portion is plugged with a sealing member 102 made of rubber or soft synthetic resin. A lock cylinder 103 made of a synthetic resin is attached to the luer taper portion. A flange 104 is formed at the other end of the barrel 101. The flange portion 104 is for attaching a grip member (not shown) for hanging the index finger and the middle finger.
[0003]
A gasket 106 made of rubber or a soft synthetic resin is inserted into the barrel 101. On an end surface of the gasket 106 opposite to the end surface facing the luer taper portion, a screw portion 107 is formed at a position overlapping the center of the axis of the barrel 101. The screw portion 107 is a right-handed female screw portion.
[0004]
Plunger rod 108 is combined with gasket 106. Like the barrel 101, the plunger rod 108 is also made of synthetic resin. The plunger rod 108 has a cross-shaped cross section, and a knob 109 for receiving the belly of the thumb is formed at the rear end. At the tip of the plunger rod 108, a screw portion 110 is formed at a position at the center of the axis. The screw portion 110 is a right-handed male screw portion. The gasket 106 and the plunger rod 108 are integrally connected by screwing the screw portion 110 to the screw portion 107 and tightening, thereby forming the plunger 105.
[0005]
In the above-described syringe, it is necessary to screw and fasten the gasket and the plunger rod before filling the barrel with the chemical solution. Examples of an assembling apparatus that automatically performs this operation can be found in Patent Documents 1 and 2.
[0006]
Patent Document 1 discloses that a barrel of a syringe is held by a syringe holding portion provided on a rotary table, a plunger rod is inserted from a rear end side of the syringe by a plunger rod insertion means, and a plunger rod fastening means is inserted in a plunger rod insertion area. Discloses an assembling device for fastening a plunger rod to a gasket in a syringe. Patent Literature 2 describes an automatic injection cylinder assembling apparatus in which a rod is screwed into a syringe main body held on an arrangement board.
[0007]
[Patent Document 1]
JP 2000-308682 A [Patent Document 2]
JP-A-2002-95746
[Problems to be solved by the invention]
The turntable described in Patent Document 1 is an index table. In other words, the rotation of the turntable is temporarily stopped while performing a predetermined work in each work area. Therefore, it is difficult to improve productivity. In addition, since the large rotary table is intermittently moved, severe vibration is caused. In order to suppress vibration, it is necessary to increase the rigidity of the device and increase the mass, which increases the manufacturing cost.
[0009]
In the automatic syringe barrel assembling device described in Patent Literature 2, eight syringe bodies are handled at a time. In screwing the syringe body and the rod, the belt mechanism is brought into contact with the side wall of the syringe body in an oblique state, and the syringe body is rotated. At this time, the belt mechanism is simultaneously in contact with the eight syringe bodies. For this reason, the tightening strength cannot be individually optimized for each syringe.
[0010]
The present invention has been made in view of the above points, and provides an assembling apparatus that can be used as an automatic assembling apparatus for a syringe, which has high productivity and can individually optimize the tightening strength. The purpose is to do.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, the assembling apparatus is configured as follows.
[0012]
(1) Assembly in which the basic shape is cylindrical, and a first component having a first screw portion at the axis center and a second component having a second thread portion at the axis center are screwed and fastened. The apparatus had the following configuration.
[0013]
(A) first transport means for rotatably holding the first component (b) supported by the first transport means, the second component being connected to an end of the second threaded portion; A holding section (c) for holding the second component so as to be in contact with the end of the first thread portion and not to rotate around the axis; a second transport means (following the first transport device for a predetermined period; d) the first threaded portion supported by the second transport means and contacting the outer surface of the first component during the following period to rotate the first component about a cylindrical axis; (E) a torque-controllable tightening motor serving as a power source for the rotation transmitting means.
[0014]
According to this configuration, the screw portions are screwed together while the second conveying device follows the first conveying device, and it is necessary to stop the first conveying device for the screwing operation. There is no. Therefore, work efficiency is high and productivity is improved. Further, the first transport means may move continuously, and it is possible to avoid shocks and vibrations caused by intermittent stopping. Therefore, it is possible to perform a quiet and reliable assembling operation without increasing the rigidity of the device so much. Further, since a torque controllable motor is used as a power source of the rotation transmitting means, the tightening can always be performed with an appropriate torque.
[0015]
(2) In the assembling apparatus as described above, the first transporting means transports a plurality of the first components simultaneously, and the second transporting means individually and separately transports the plurality of first components. It is provided with a plurality of the rotation transmitting means that come into contact at the same time.
[0016]
According to this configuration, a plurality of pairs of the first component and the second component can be simultaneously subjected to the tightening operation, so that the production efficiency is high. Further, since the plurality of rotation transmitting means are individually and simultaneously contacted with the plurality of first components, an appropriate torque can be transmitted according to the situation of each component.
[0017]
(3) In the assembling apparatus as described above, the plurality of rotation transmitting means terminate the rotation of the first component when the individual torque reaches the set torque value.
[0018]
According to this configuration, in any pair of the first part and the second part, the tightening is completed when the set torque value is reached, so that the tightening torque is individually managed for a plurality of pairs of parts. It can be carried out. As a result, not only can the production efficiency be improved, but also variations in product quality can be eliminated.
[0019]
(4) In the assembling apparatus as described above, the first transport means is constituted by a turret continuously rotating in one direction, and the second transport means is arranged coaxially with the turret and reciprocates and rotates. It consists of.
[0020]
According to this configuration, the components can be continuously transported by the turret, and the productivity is improved. In addition, since the rotary shuttle that is arranged coaxially with the turret and rotates reciprocally is the second transport body, the distance between the first transport means and the second transport means is accurately maintained, and The contact with the rotation transmitting means can be properly managed.
[0021]
(5) In the assembling apparatus as described above, when the period following the turret ends and the rotary shuttle returns to the start point, even if the rotation transmitting unit contacts the first component, the second component is not moved. The rotation transmitting means performs a compensating drive so as not to affect the tightening state with the parts.
[0022]
According to this configuration, the rotary shuttle can be returned to the start point without affecting the tightening state of the first component and the second component, so that the properly set tightening state is loosened, Alternatively, the assembly quality is stabilized without excessive tightening.
[0023]
(6) In the assembling apparatus as described above, the first component is a syringe barrel, the second component is a syringe plunger rod, and the first screw portion is provided on a gasket in the barrel. And the second threaded portion is a threaded portion at the tip of the plunger rod.
[0024]
According to this configuration, it is possible to provide a syringe assembling apparatus which has high productivity and can individually adjust the tightening strength of the plunger rod to the gasket. Therefore, the tightening strength is insufficient, or conversely, the tightening strength is too strong, so that the gasket turns around in the barrel, and the outer peripheral surface of the gasket or the inner surface of the barrel is worn, impairing the performance as a syringe. Such a situation can be avoided, and the quality of the syringe can be stabilized.
[0025]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 is a vertical sectional view of a main part, FIG. 2 is a plan view of a main part, FIG. 3 is a partial front view, FIG. 4 is a partial plan view, FIG. 5 is a vertical sectional view of a component supply part, and FIG. FIG. 7 is a graph conceptually showing the amount of rotational movement of the shuttle, and FIG. 7 is a graph showing the relationship between the moving speed of the turret and the rotary shuttle and the rotational speed of the tightening motor.
[0026]
The assembling apparatus 1 is assembled around the frame 10. FIG. 1 shows a part of a table in a frame 10. A shaft 11 stands vertically from the frame 10. The shaft 11 does not rotate. The non-rotating shaft 11 supports a turret 20 as a first transport unit and a rotary shuttle 30 as a second transport unit so that they can rotate in a horizontal plane.
[0027]
The turret 20 is circular in plan. At the periphery of the turret 20, concave portions 26 holding components to be described later are formed at regular angular intervals (see FIG. 2). That is, the turret 20 is of a type generally called a star wheel. The rotary shuttle 30 has a flat fan shape, and a main part of the fan is supported by the shaft 11. That is, the rotary shuttle 30 is arranged coaxially with the turret 20.
[0028]
The bearing housing 21 at the center of the turret 20 and the bearing housing 31 at the center of the rotary shuttle 30 are fitted to the shaft 11 so that they are vertically overlapped with the bearing housing 21 up and the bearing housing 31 down. Each of the bearing housings 21 and 31 has two ball bearings 22 and 32 inside thereof, and is rotatably supported on the shaft 11 via the ball bearings 22 and 32. Gears 23 and 33 are formed integrally with the bearing housings 21 and 31, respectively.
[0029]
The power source of the turret 20 and the rotary shuttle 30 is a motor 24 and a motor 34. Each of the motors 24 and 34 is attached to the frame 10 with its shaft being vertical. The torque of the motor 24 is transmitted to the turret 20 via the gear 25. The gear 25 is fixed to an upper end of a shaft 25 a vertically supported by the frame 10 and meshes with the gear 23. The shaft 25a is connected to the motor 24 by an appropriate power transmission means such as a belt, and the rotational force of the motor 24 is transmitted to the turret 20. In the motor 34, the gear 35 fixed to the motor shaft directly meshes with the gear 33, and transmits the rotational force of the motor 34 to the rotary shuttle 30. The motor 24 rotates the turret 20 continuously, and the motor 34 rotates the rotary shuttle 30 back and forth.
[0030]
For each of the recesses 26 of the turret 20, a holding part 40 of the first component is arranged. The barrel 101 of the syringe 100 is a first component. The holding unit 40 rotatably holds the barrel 101 with its axis vertical, and includes a backup roller 41 that supports the side surface of the barrel 101. The backup roller 41 is supported by the turret 20 so as to be rotatable about a vertical axis. As shown in FIG. 1, two backup rollers 41 constitute one set, and as shown in FIG. A fixed arc-shaped guide 42 (see FIG. 2) supported by the frame 10 so as to be located outside the turret 20 prevents the barrel 101 from falling off the backup roller 41. The clearance between the guide 42 and the barrel 101 is set to about 0.5 mm.
[0031]
On the periphery of the turret 20, a holding part 50 of the second component is provided at a position aligned with the holding part 40. The holding unit 50 is located radially inward of the holding unit 40. The plunger rod 108 of the syringe 100 is a second component.
[0032]
The structure of the holding unit 50 is as follows. First, the guide member 51 is fixed on the upper surface of the turret 20. A slider 52 is attached to the guide member 51 so as to be slidable in the vertical direction. A bracket 53 projects radially outward from the slider 52. The bracket 53 holds the plunger rod 108 on the barrel 101 held by the holding portion 40 so that the axes of the plunger rod 108 and the plunger rod 108 are perpendicular to each other.
[0033]
A roller 54 is provided at the upper end of the slider 52. The roller 54 rotates around a horizontal axis, and is attached to a radial inner surface of the slider 52. The roller 54 rides on the cam surface of the three-dimensional cam 55 fixed to the shaft 11 to support the slider 52. When the turret 20 rotates, the slider 52 moves up and down in accordance with the up and down movement of the three-dimensional cam 55. By this movement, the plunger rod 108 is inserted into the barrel 101 at a predetermined angular position.
[0034]
The upper end of the shaft 11 is covered with a cap-shaped cover 56. The cover 56 covers from the upper surface of the three-dimensional cam 55 to the outside of the slider 52, but does not interfere with the bracket 53.
[0035]
The periphery of the rotary shuttle 30 protrudes outside the periphery of the turret 20. Here, a rotation transmitting unit 60 that rotates the barrel 101 held by the holding unit 40 is arranged.
[0036]
The rotation transmitting means 60 includes the following components. That is, a bell crank 61 supported by the rotary shuttle 30 so as to be rotatable in a horizontal plane, a pulley 62 supported by one arm of the bell crank, a pulley 63 placed at the center of rotation of the bell crank 61, and a pulley 62 4, a belt 64 wound around the pulley 63, a tightening motor 65 for transmitting rotation to the pulley 63, and a belt crank 61 which is stretched between the other arm of the bell crank 61 and the rotary shuttle 30 to rotate the bell crank 61 in FIG. A tension coil spring 66 that applies a rotational urging force in the direction and presses the belt 64 against the barrel 101 held by the holding unit 40. The tightening motor 65 serves as a power source of the rotation transmitting means 60 and can control the torque.
[0037]
The rotary shuttle 30 supports six sets of rotation transmitting means 60. The six sets of rotation transmitting means individually and simultaneously contact the six barrels 101 adjacent to each other.
[0038]
As shown in FIG. 2, a component supply unit 70 and a syringe discharge unit 80 are provided adjacent to the turret 20. Assuming that the angle at which the component supply unit 70 is disposed is 0 °, the syringe discharge unit 80 is disposed at a position separated by 270 ° in the traveling direction of the turret 20 therefrom.
[0039]
The component supply unit 70 includes a star wheel 71. The star wheel 71 has a two-story shape as shown in FIG. The barrel 101 is supplied from a linear feeder 72 to the first floor portion 71 a of the star wheel 71. A plunger rod 108 is supplied to the second floor portion 71b of the star wheel 71 from a linear feeder 73 disposed orthogonal to the linear feeder 72. Arc-shaped guides 74 and 75 provided outside the star wheel 71 prevent the barrel 101 and the plunger rod 108 from falling off. The clearance between the guides 74 and 75 and the barrel 101 is about 0.5 mm. At the point of contact between the star wheel 71 and the turret 20, the barrel 101 is delivered to the holder 40, and the plunger rod 108 is delivered to the holder 50.
[0040]
The syringe discharge section 80 also includes a star wheel 81. The combination product of the barrel 101 and the plunger rod 108 is delivered to the star wheel 81 at the contact point between the turret 20 and the star wheel 81. An arcuate guide 82 provided outside the star wheel 81 prevents the combined product of the barrel 101 and the plunger rod 108 from falling off. The clearance between the guide 82 and the barrel 101 is about 0.5 mm. The guide 82 is continuous with one of the rails of the linear feeder 83. The combined product of the barrel 101 and the plunger rod 108 is guided by the guide 82, enters the linear feeder 83, and proceeds to the next step.
[0041]
The assembling apparatus 1 operates as follows. In FIG. 2, the turret 20 continuously rotates counterclockwise, and the star wheels 71 and 81 continuously rotate clockwise. The peripheral speeds of the turret 20, the star wheel 71, and the star wheel 81 are equal to each other.
While the turret 20 is continuously rotating, the rotary shuttle 30 repeatedly follows the turret 20 (synchronous movement) and returns, as shown in FIG.
[0042]
The barrel 101 and the plunger rod 108 are supplied from the component supply unit 70 to the turret 20. A gasket 106 is inserted into the barrel 101 in a previous step. The turret 20 holds the barrel 101 with the holding section 40 and holds the plunger rod 108 with the holding section 50. The holding unit 50 holds the plunger rod 108 so as not to rotate around the axis. When the rotation of the turret 20 advances a little, the slider 52 descends due to the cam shape of the three-dimensional cam 55, and the tip of the plunger rod 108 enters the barrel 101. Then, the end of the screw portion 110 comes into contact with the end of the screw portion 107.
[0043]
The rotary shuttle 30 swinging forward in the traveling direction returns to the start position (the solid line position in FIG. 2), and the six sets of rotation transmitting means 60 individually and simultaneously contact the six adjacent barrels 101. At this point, the barrel 101 has not been screwed into the plunger rod 108. The rotary shuttle 30 that has returned to the starting point immediately follows the turret 20. That is, rotation starts counterclockwise at the same angular velocity as the turret 20.
[0044]
The rotary shuttle 30 follows the turret 20 for a predetermined period until it reaches the position indicated by the two-dot chain line in FIG. During the following period, the belt 64 is in contact with the outer surface of the barrel 101 by the rotational urging force applied to the bell crank 61 by the extension coil spring 66. Here, the tightening motor 65 operates to drive the belt 64. When the belt 64 is driven, the barrel 101 that is in contact with the belt 64 rotates around the axis. The rotation direction is a direction in which the threaded portion 107 of the gasket 106 is screwed into the threaded portion 110, that is, a right-handed screw tightening direction.
[0045]
In each of the six barrels 101, when the screw portion 107 is completely screwed into the screw portion 110, the tightening torque reaches the set torque value. The tightening motors 65 that have reached the set torque value individually stop rotating. The torque at which the tightening motor 65 stops rotating, that is, the set torque value is set to a maximum value in a range that does not cause relative rotation between the barrel 101 and the gasket 106. Therefore, the gasket 106 is forcibly rotated and the outer peripheral surface is worn out due to friction with the inner surface of the barrel 101, and the situation does not progress.
[0046]
As described above, the tightening strength of the plunger rod 108 with respect to the gasket 106 in the individual barrel 101 is optimized. Therefore, the tightening strength is insufficient, or conversely, the tightening strength is too strong, so that the gasket 106 starts to rotate in the barrel 101, and the outer peripheral surface of the gasket 106 or the inner surface of the barrel 101 is worn and the It is possible to avoid a situation in which performance is impaired. Thereby, the quality of the syringe 100 becomes stable.
[0047]
With the six barrels 101 tightened to a predetermined torque, the rotary shuttle 30 reaches the position shown by the two-dot chain line in FIG. The rotary shuttle 30 now turns around and begins to return to the starting point. On the way back, the belt 64 comes into contact with the barrel 101 one after another. If the belt 64 is not moved, the barrel 101 is given a rotational force about the axis. The rotation in this case is a rotation in a direction in which tightening is loosened because the screw portions 107 and 110 are right-handed screws. Nothing will happen if the just completed tightening is loose, so the belt 64 is provided with a compensating drive so that the movement of the belt 64 in the direction opposite to that of the rotary shuttle 30 itself occurs. Thus, although it is inevitable that the belt 64 comes into contact with the barrel 101, the belt 64 and the barrel 101 pass each other when the relative speed of the contact surface is zero. As a result, there is no change in the tightened state between the barrel 101 and the plunger rod 108.
[0048]
FIG. 7 illustrates the above situation. The turret 20 is continuously rotating at a speed a (the speed in this case is a speed at a contact portion between the barrel 101 and the rotation transmitting means 60). The rotary shuttle 30 moves at the same speed a as the turret 20 during the following period. During the return period, the rotary shuttle 30 moves in the opposite direction at a speed that is twice the speed a. The tightening motor 65 rotates at a speed higher than the speed at the time of tightening during the return period, and drives the belt 64 so that the relative speed with respect to the barrel 101 becomes zero.
[0049]
Since the rotary shuttle 30 is arranged coaxially with the turret 20 and reciprocates, the rotation transmitting means 60 always keeps a constant distance from the turret 20. Therefore, the contact state between the barrel 101 and the rotation transmitting means 60 is stabilized, and no excessive contact pressure is applied from the rotation transmitting means 60 to the barrel 60, and conversely, the contact pressure does not become insufficient.
[0050]
The barrel 101 and the plunger rod 108 that have been tightened advance to the syringe discharge section 80, are delivered from the turret 20 to the star wheel 81, and from there to the linear feeder 83 and further to the next process.
[0051]
Although an embodiment of the present invention has been described above, other various modifications can be made without departing from the gist of the present invention.
[0052]
【The invention's effect】
According to the present invention, a second component having a second threaded portion at the center of the axis is screwed to a first component having a first threaded portion at the center of the axis having a cylindrical shape. In the assembling apparatus, the screw portions are screwed together while the second conveying means follows the first conveying means holding the first and second parts. Since it is not necessary to stop the first transporting means, the work efficiency is high and the productivity is improved. In addition, the first transporting means may move continuously, and it is possible to avoid the impact and vibration caused by stopping the first transporting means. Therefore, it is possible to perform a quiet and reliable assembling operation without increasing the rigidity of the device so much. Further, since a torque controllable motor is used as a power source of the rotation transmitting means, the tightening can always be performed with an appropriate torque.
[0053]
Further, the first transporting means simultaneously transports a plurality of the first components, and the second transporting means includes a plurality of rotation transmitting means individually and simultaneously contacting the plurality of first components. A plurality of pairs of the first component and the second component can be simultaneously subjected to the tightening operation, and the production efficiency is high. Further, since a plurality of rotation transmitting means are individually and simultaneously brought into contact with the plurality of first components, an appropriate torque can be transmitted according to the situation of each component. Since the plurality of rotation transmitting means individually terminate the rotation of the first component when the set torque is reached, the tightening torque can be individually controlled for a plurality of pairs of components, and the quality of the product varies. Disappears.
[0054]
A first part is a syringe barrel, a second part is a syringe plunger rod, a first thread is a thread provided on a gasket in the barrel, and a second thread is a plunger rod. When the tip is a threaded portion, it is possible to provide a syringe assembling apparatus which has high productivity and can individually adjust the tightening strength of the plunger rod to the gasket. According to this syringe assembling apparatus, the tightening strength is insufficient, or conversely, the tightening strength is too strong, so that the gasket rotates in the barrel, and the outer peripheral surface of the gasket or the inner surface of the barrel is worn. A situation in which the performance of the syringe is impaired can be avoided, and the quality of the syringe can be stabilized.
[Brief description of the drawings]
1 is a vertical sectional view of a main part of an assembling apparatus according to an embodiment of the present invention; FIG. 2 is a plan view of a main part of the assembling apparatus; FIG. 3 is a partial front view of the assembling apparatus; Partial plan view of the assembling apparatus. FIG. 5 is a vertical sectional view of the component supply unit. FIG. 6 is a graph conceptually showing the amount of rotational movement of the turret and rotary shuttle. FIG. 7 is the moving speed and tightening of the turret and rotary shuttle. FIG. 8 is a graph showing the relationship between the number of rotations of a motor and FIG.
1 assembly device 10 frame 20 turret (first transport device)
30 Rotary shuttle (second transport device)
40 Holder (Holder for first component)
50 Holder (Holder for second component)
60 rotation transmission means 65 tightening motor 100 syringe 101 barrel (first part)
106 Gasket 107 Screw part (first screw part)
108 plunger rod (second part)
110 screw part (second screw part)

Claims (6)

The basic shape is a cylindrical shape, and a first component having a first screw portion at the center of the axis and a second component having a second screw portion at the center of the axis are screwed and tightened. An assembling apparatus comprising:
(A) first transport means for rotatably holding the first component (b) supported by the first transport means, the second component being connected to an end of the second threaded portion; A holding section (c) for holding the second component so as to be in contact with the end of the first thread portion and not to rotate around the axis; a second transport means (following the first transport device for a predetermined period; d) the first threaded portion supported by the second transport means and contacting the outer surface of the first component during the following period to rotate the first component about a cylindrical axis; (E) a torque controllable motor serving as a power source for the rotation transmitting means. The first transporting means transports a plurality of the first components simultaneously, and the second transporting means includes a plurality of the rotation transmitting means individually and simultaneously contacting the plurality of first components. The assembly device according to claim 1, wherein The assembly apparatus according to claim 2, wherein the plurality of rotation transmission units individually terminate the rotation of the first component when the set torque value is reached. The said 1st conveyance means is comprised by the turret which rotates continuously in one direction, and the said 2nd conveyance means is comprised by the rotary shuttle which is arrange | positioned coaxially with the turret and reciprocates. An assembly apparatus according to claim 2 or claim 3. When the period following the turret is completed and the rotary shuttle returns to the starting point, even if the rotation transmitting means contacts the first component, it does not affect the tightening state with the second component. The assembly apparatus according to claim 4, wherein the rotation transmitting means performs the compensating drive. The first part is a syringe barrel, the second part is a syringe plunger rod, the first thread is a thread provided on a gasket in the barrel, and the second thread is The assembly device according to any one of claims 1 to 5, wherein the portion is a screw portion at a tip of the plunger rod.

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