JP2014046980A - Cap fastening device for pump cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily thread-fasten a cap part while preventing pop-up of a nozzle part while keeping the nozzle part of a pump cap in a desired rotation-direction position, by a simple device configuration.SOLUTION: A cap fastening device 100 for a pump cap 10 includes a nozzle holding unit 30 that imparts torque, lower than torque loosening a nozzle part 12, to the nozzle part 12 from a ring part 13 in a direction opposite to a cap fastening direction. A cap rotation unit 20 for rotating the cap part 11 in the cap fastening direction with respect to a container 1 is installed rotatably with respect to the nozzle holding unit 30.

Description

  The present invention relates to a cap tightening device for a pump cap.

  For example, for liquid products such as shampoos, rinses, conditioners, etc., in addition to purchasing single-use products in resin containers, once you purchase refillable products in resin containers, The consumer behavior of purchasing is common. Further, this refillable resin container with a pump cap is not driven into the container but screwed.

  As described in Patent Document 1, the pump cap has a cap portion that fixes the pump cap to the container, a nozzle portion that discharges the liquid when in use, and a ring portion that connects both of them. A liquid passing tube for sucking up is provided in the nozzle portion.

  When a consumer uses a container with a pump cap, from the pop-up state where the nozzle part rises from the ring part, the nozzle part is pushed down to discharge a liquid product for one time. By setting the nozzle part to be lowered and screwed to the ring part, the total height of the container and the pump cap is lowered, and the display space at the store is secured and the efficiency during transportation is improved. Furthermore, from the viewpoint of aesthetics at the time of display of the product in the store, the rotation direction position (rotation angle position) of the nozzle portion with respect to the container is often a fixed direction position. In production, positioning of the rotational position of the nozzle part relative to the container may be performed at the same time when the cap part is screwed to the container, or after the cap is tightened. Is desirable.

  In a container with a pump cap, the screw tightening of the nozzle portion to the ring portion is performed in a general positive screw direction so that the consumer can remove the nozzle portion without feeling uncomfortable when removing the nozzle portion from the ring portion. The cap portion for fixing the pump cap to the container is also in a positive screw direction so that the consumer can remove it without a sense of incompatibility when refilling. That is, the screw tightening of the nozzle portion to the ring portion is in the same direction as the cap tightening direction, which is the screw tightening direction of the cap portion that fixes the pump cap to the container. Therefore, when the cap is tightened after the container is filled with the liquid product, the cap portion that secures the pump cap to the container is tightened while the nozzle portion is kept at the desired rotational position. When the cap part rotates, the ring part rotates and the cap part and the ring part rotate at the same time. As a result, the nozzle part comes off from the ring part and the nozzle part rises. Once popped up, even if you try to push the nozzle part back and return it to its original state, the liquid in the liquid passing tube will be discharged from the nozzle part and the pump cap will become dirty, making it impossible to ship as a product. . In order to ship as a product, it is necessary to remove the pump cap once, adjust the amount of filling liquid in the container, and then install a new pump cap. The pump cap that has popped up becomes waste, which is undesirable in terms of the environment. Moreover, since pump caps are expensive among packaging materials, a large profit loss occurs if pop-ups occur frequently.

6-39752

  In a container with a pump cap, in order to prevent the pump cap from popping up when the cap is tightened while maintaining the position of the nozzle in the rotation direction relative to the container, the cap and screw are tightened while the nozzle and ring are firmly fixed. There is a need. At this time, the cap rotating device for screwing the cap portion needs a large and complex capper head to enable the cap portion to rotate while avoiding the fixing portion that firmly fixes the nozzle portion and the ring portion. Become. In general, since the cap fastening device is provided with several to several tens of capper heads, the manufacturing cost is extremely high, and the labor for maintenance is also great.

  SUMMARY OF THE INVENTION An object of the present invention is to easily screw a cap portion with a simple device configuration while preventing the nozzle portion from popping up while keeping the nozzle portion of the pump cap at a desired rotational direction position.

  According to the first aspect of the present invention, there is provided a cap portion which is rotated in a fixed cap tightening direction with respect to the container and screw-fastened, and freely rotates with respect to the cap portion, and the cap portion screwed to the container. When the ring part is provided with a flange to be clamped against, the nozzle part is rotated by the ring part in the same direction as the cap tightening direction and screwed, and the nozzle part is rotated reversely to the ring part in the cap tightening direction. A cap tightening device for a pump cap having a mechanism in which the nozzle portion is lifted upward from the ring portion, and a torque lower than the torque that the nozzle portion loosens from the ring portion in a direction opposite to the cap tightening direction. A nozzle rotating device that has a nozzle pressing device to be applied to the portion and rotates the cap portion in the cap tightening direction with respect to the container. One in which was installed rolling freely.

  When the cap part is screwed to the container while keeping the nozzle part of the pump cap in the desired rotational direction position, the ring part is prevented from rotating around the cap part, and the nozzle part comes off from the ring part and enters a pop-up state. Can be prevented.

FIG. 1 is a schematic front view showing a cap fastening device. 2A and 2B show the start of cap tightening by the cap tightening device, where FIG. 2A is a front view and FIG. 2B is a perspective view. 3A and 3B show a cap tightening completion state by the cap tightening device, where FIG. 3A is a front view and FIG. 3B is a perspective view. 4A and 4B show a nozzle pressing device at the start of cap tightening, where FIG. 4A is a bottom view, FIG. 4B is a perspective view, and FIG. 4C is a bottom view with a nozzle portion set. FIG. 5 is a bottom view showing the nozzle pressing device in the middle of the cap tightening. FIG. 6 is a bottom view showing the nozzle pressing device when the cap tightening is completed. FIG. 7 is a schematic front view showing a modification of the cap fastening device. FIG. 8 is a schematic front view showing a modified example of the cap fastening device. FIG. 9 is a schematic front view showing a modification of the cap fastening device. FIG. 10 is a cross-sectional view showing the main part of a container with a pump cap. 11A and 11B are pump caps, FIG. 11A is a side view in which a nozzle portion is screwed to a ring portion, and FIG. 11B is a side view in a pop-up state.

  The cap tightening device 100 shown in FIG. 1 screws the cap portion 11 of the pump cap 10 with a tube onto the outer peripheral thread portion 3 of the opening 2 of the container 1 as shown in FIG. The ring portion 13 is restrained from being rotated around the cap portion 11 while keeping the direction of the desired rotation direction with respect to the container 1, and the pop-up state in which the nozzle portion 12 is detached from the ring portion 13 can be prevented. FIG. 11 is a side view of the pump cap 10, (A) is a side view in which the nozzle portion 12 is screwed to the ring portion 13, and (B) is a side view in a pop-up state in which the nozzle portion 12 is detached from the ring portion 13.

  At this time, as shown in FIG. 10, the pump cap 10 is freely rotated with respect to the outer peripheral screw part 3 of the container 1 and rotated with a fixed cap tightening direction and screwed. Rotating and rotating in the same direction as the cap tightening direction on the ring portion 13 having a flange 13F clamped against the container 1 by the cap portion 11 screwed to the container 1 and the outer peripheral thread portion 13A of the ring portion 13 As a mechanism that lifts the nozzle part 12 upward when the nozzle part 12 is reversely rotated in the cap tightening direction with respect to the nozzle part 12 that is screwed and the ring part 13 and the nozzle part 12 is detached from the ring part 13. Spring (not shown). As shown in FIG. 11B, the pump cap 10 may have a male screw 13R in the ring portion 13 and a female screw 13S inside the nozzle portion 12, or may have a female screw in the ring portion 13 and the nozzle portion 12. May have a male screw (not shown).

  The pump cap 10 is specifically as follows. The nozzle portion 12 is integrated with the inner stem 12A. The ring portion 13 is integrated with the tank 13T, and the tank 13T includes a flange 13F. A packing 13P is provided between the flange 13F and the end face of the opening 2 of the container 1. The outer stem 14 disposed on the inner periphery of the tank 13T serves as a tank liquid sealing portion above the tank 13T. A pipe 13Q is connected to the lower end of the tank 13T, and the tank 13T and the pipe 13Q constitute a liquid passing tube that sucks up the liquid in the container 1.

  The tip of the inner stem 12A is a piston (not shown) that contacts the inside of the tank 13T. When the nozzle portion 12 is pushed downward by hand, the inner stem 12A pressurizes the liquid in the tank 13T, and this liquid is in the inner stem. The ball 15 is lifted up inside 12 </ b> A, and the liquid passing through the inside of the nozzle portion 12 connected to the inner stem 12 </ b> A is discharged from the discharge hole of the nozzle portion 12. A check valve (not shown) is provided at the lower part of the inside of the tank 13T to prevent the liquid in the tank 13T from leaking downward during pressurization.

  When the hand that has pushed down the nozzle portion 12 is released, the inner stem 12A fixed to the nozzle portion 12 is raised by the aforementioned spring force, and the nozzle portion 12 is also raised. When the ball 15 is lowered, the flow path to the nozzle portion 12 of the inner stem 12A is closed, and when the inner stem 12A is raised, the inside of the tank 13T becomes negative pressure, and the reverse of the above-described reverse of the lower portion of the tank 13T. The stop valve is opened, and the liquid in the container 1 is sucked into the tank 13T.

  The cap fastening device 100 includes a cap rotating device 20 and a nozzle pressing device 30 as shown in FIGS.

  As shown in FIG. 1, the cap rotation device 20 includes a chuck rotation drive transmission unit 21 that is pivotally supported by a gantry (not shown). The chuck rotation drive transmission unit 21 is rotated by the rotational force of a motor (not shown) and includes a chuck opening / closing cylinder 22 on the lower surface. The chuck opening / closing cylinder 22 includes a plurality of gripping portions 23 and moves the gripping portions 23 to face each other so that the cap portion 11 of the pump cap 10 can be gripped by the gripping portions 23.

  Accordingly, the cap rotating device 20 rotates the entire gripping portion 23 with the chuck rotation drive transmission portion 21 in a state where the cap portion 11 is gripped by the plurality of gripping portions 23, so that the cap portion 11 is fixed to a certain cap. Rotate in the tightening direction N and tighten with screws. At this time, the cap rotating device 20 is installed so as to be rotatable relative to the nozzle pressing device 30.

  As shown in FIGS. 1 to 3, the nozzle pressing device 30 is fixedly supported by a gantry (not shown) so as not to rotate, and is passed through the central portion of the chuck rotation drive transmission portion 21 of the cap rotation device 20. The lower end portion of the support shaft 31 is fixedly held at the lower end portion located immediately below the chuck rotation drive transmission portion 21 of the cap rotating device 20. The nozzle pressing device 30 applies a torque Ta lower than the torque T0 at which the nozzle portion 12 is loosened from the ring portion 13 to the nozzle portion 12 of the pump cap 10 in a direction opposite to the cap tightening direction N by the cap rotating device 20.

  Specifically, as shown in FIG. 4, the nozzle pressing device 30 can rotate around a fixed portion 32 that is fixedly held at the lower end portion of the support shaft 31 and a central axis 32 </ b> C of the fixed portion 32. A rotation restricting portion 33 is provided, and a torsion spring 34 is interposed between the fixed portion 32 and the rotation restricting portion 33. As shown in FIG. 4 (B), the fixed portion 32 and the rotation restricting portion 33 form a recessed portion 35 into which the head 12H of the nozzle portion 12 enters at the center thereof, and have notches opposed to each other in the circumferential direction thereof. A nozzle insertion portion 36 in which the nozzle 12N having a narrow nozzle portion 12 is inserted is formed therebetween. Then, the rotation restricting portion 33 has a maximum rotation angle θ from the rotation start end position that contacts the rotation start end determination portion 32A of the fixing portion 32 to the rotation end position that stops rotation while contacting the rotation end determination portion 32B of the fixing portion 32. It can rotate in the same direction as the cap tightening direction N by the cap rotating device 20 (for example, 0 to 30 degrees described later). The rotation restricting portion 33 is a torque caused by the spring force of the torsion spring 34 interposed between the fixed portion 32 and a torque Ta lower than the torque T0 at which the nozzle portion 12 loosens from the ring portion 13. 20 is applied in a direction opposite to the cap tightening direction N. At this time, the rotation restricting portion 33 has a torque applying surface 33A that contacts the nozzle 12N of the nozzle portion 12 inserted in the nozzle inserting portion 36 in the rotation direction, and caps the above-described torque Ta applied from the torsion spring 34. It is applied to the nozzle 12N of the nozzle portion 12 in the direction opposite to the direction N.

  With the above configuration, the nozzle pressing device 30 prevents the pop-up state as follows while keeping the nozzle portion 12 of the pump cap 10 at a desired rotational direction position. That is, in the pump cap 10, in order to keep the rotation direction position of the nozzle portion 12 (nozzle 12N) with respect to the container 1 at a desired angle, the torque applying surface 33A of the rotation restricting portion 33 of the nozzle pressing device 30 has the above-described constant angle θ. Regulate within range. At this time, in the pump cap 10 in which the nozzle portion 12 is screwed to the ring portion 13 with a constant torque (for example, about 1 N · m), a torque exceeding the constant torque is applied to the nozzle portion 12, and the nozzle portion 12. Is desired to prevent the ring portion 13 from becoming loose and popping up. When the cap part 11 is screwed by the cap rotating device 20, the cap part 11 is generally fastened to the outer peripheral screw part 3 of the container 1, and when the cap part 11 collapses the packing 13 </ b> P via the flange 13 </ b> F of the ring part 13, the cap part 11. Applies a rotational force F to the ring portion 13 to rotate the ring portion 13 in the cap tightening direction via the flange 13F. On the other hand, the torque applying surface 33A of the rotation restricting portion 33 applies a torque Ta (preferably 50 to 80% of T0) lower than the torque T0 at which the nozzle portion 12 loosens from the ring portion 13 to the cap tightening direction N by the cap rotating device 20. The cap portion 11 is slightly rotated in the same direction as the cap tightening direction together with the nozzle portion 12 by the rotational force F applied to the ring portion 13 while being applied to the nozzle portion 12 in the opposite direction. Thereby, the nozzle part 12 rotates integrally without loosening from the ring part 13. At the same time, the nozzle portion 12 and the ring portion 13 are rotated slightly as described above with the amount of rotation being suppressed by the presence of the torque Ta, and the rotational position of the nozzle portion 12 (nozzle 12N) with respect to the cap portion 11 Is regulated within the range of the aforementioned constant angle θ.

  The nozzle pressing device 30 does not include the rotation restricting portion 33, completely prevents the nozzle portion 12 (nozzle 12N) from rotating, and fixes the nozzle portion 12 without slightly rotating the nozzle portion 12 in the cap tightening direction. When holding, if the cap part 11 gives the said rotational force F to the ring part 13 via the flange 13F, the ring part 13 will rotate in the loosening direction with respect to the nozzle part 12, and will be in a pop-up state.

Hereinafter, operation | movement of the cap fastening apparatus 100 is demonstrated with reference to FIGS.
Note that the screw tightening direction (cap tightening direction N) of the cap portion 11 with respect to the outer peripheral screw portion 3 of the container 1 and the screw tightening direction of the nozzle portion 12 with respect to the outer peripheral screw portion 13A of the ring portion 13 are general positive screw directions ( (Clockwise direction when the container 1 is viewed from above).

  2 to 6, P0 is a desired position in the rotation direction of the nozzle portion 12 when the screw tightening of the cap portion 11 is completed, and P1 is a position in the rotation direction of the nozzle portion 12 (nozzle at the start of screw tightening of the cap portion 11). The nozzle 12N of the portion 12 enters the nozzle insertion portion 36 of the rotation restricting portion 33 at the rotation start end position), P2 is the rotational direction position of the nozzle portion 12 when the rotation restricting portion 33 rotates to the rotation end position, and Px is the cap The rotation direction position of the nozzle part 12 at the time of screw fastening middle of the part 11 to completion is shown.

(Step 1) (FIGS. 2 and 4)
The cap rotating device 20 is lowered from the standby position, and the gripping portion 23 grips the cap portion 11 of the pump cap 10 by the chuck opening / closing cylinder 22. The nozzle 12N of the nozzle portion 12 enters the nozzle insertion portion 36 formed by the fixing portion 32 and the rotation restricting portion 33 of the nozzle pressing device 30.

  The rotational direction position P1 of the nozzle portion 12 (nozzle 12N) at the start of the cap tightening is opposite to the cap tightening direction N of the cap portion 11 than the desired position P0 of the nozzle portion 12 when the screw tightening of the cap portion 11 is completed. To a position returned by a certain angle (preferably 10 to 30 degrees, 20 degrees in this embodiment). That is, the return angle is slightly smaller than the maximum rotation angle θ of the rotation restricting portion 33 (30 degrees in this embodiment) (preferably 5 to 15 degrees smaller, 10 degrees smaller in this embodiment and 20 degrees). Is good.

  The rotation direction position P2 of the nozzle portion 12 (nozzle 12N) when the rotation restricting portion 33 rotates to the rotation end position is a position advanced slightly toward the cap tightening direction N from the desired position P0 of the nozzle portion 12. (Preferably 5 to 10 degrees, 10 degrees in this embodiment).

(Process 2)
The gripping portion 23 is rotated by the chuck rotation drive transmission portion 21 of the cap rotating device 20, and screwing of the cap portion 11 to the outer peripheral screw portion 3 of the container 1 is started.

(Process 3) (FIG. 5)
When the cap part 11 is screwed by the cap rotating device 20, the cap part 11 is generally fastened to the outer peripheral screw part 3 of the container 1, and when the cap part 11 collapses the packing 13 </ b> P via the flange 13 </ b> F of the ring part 13, the cap part 11. Applies a rotational force F to the ring portion 13 to rotate the ring portion 13 in the cap tightening direction via the flange 13F. As a result, the nozzle portion 12 also rotates in the same clockwise direction as the cap tightening direction N together with the ring portion 13. In addition, since the crushing amount of the packing 13P is apt to crush when the force for pushing the pump cap 10 from the upper side to the lower side is large, the pushing force from the upper side is reduced by reducing the weight of the cap rotating device 20 in this embodiment. .

  The rotation restricting portion 33 of the nozzle pressing device 30 is pushed and rotated by the above-described rotation of the nozzle portion 12, and the rotation direction position Px of the nozzle portion 12 is displaced from the position P1 at the start of cap tightening in the cap tightening direction N. . At this time, the rotation restricting portion 33 of the nozzle pressing device 30 is a torque caused by the spring force of the torsion spring 34, and is a torque Ta lower than the torque T0 at which the nozzle portion 12 loosens from the ring portion 13 (preferably 50 to 50 of T0). 80%) is applied to the nozzle portion 12 in a direction opposite to the cap tightening direction N by the cap rotating device 20, and slightly rotates in the same direction as the cap tightening direction N. Accordingly, the nozzle portion 12 rotates together with the ring portion 13 without loosening from the ring portion 13, and the amount of rotation is suppressed by the resistance of the spring force of the torsion spring 34.

(Step 4) (FIGS. 3 and 6)
When the screw tightening of the cap portion 11 by the cap rotating device 20 is completed, the rotational direction position Px of the nozzle portion 12 is a fixed angle (0 to 30 degrees in this embodiment) from the position P1 at the start of cap tightening to the cap tightening direction N. ) Fits in the advanced angle range. That is, the nozzle portion 12 does not loosely pop up from the ring portion 13, and the rotational position Px of the nozzle portion 12 is within 10 degrees clockwise from the desired position P0 and within 20 degrees counterclockwise. It can fit within the angle range.

  When the screw rotation of the cap 11 is completed by the cap rotating device 20, when the rotation restricting portion 33 of the nozzle pressing device 30 reaches the rotation end position, the rotation restricting portion 33 is moved to the nozzle portion 12 by the rotational force of the torsion spring 34. The applied torque Ta is insufficient, and the torque applying surface 33A of the rotation restricting portion 33 that has reached the rotation end position stops the nozzle 12N of the nozzle portion 12 that is about to rotate together with the ring portion 13, so that the nozzle portion 12 is There is a concern of loosening from the ring portion 13 and popping up. In this case, by strongly adjusting the spring force of the torsion spring 34, when the screw rotation of the cap portion 11 by the cap rotating device 20 is completed, the rotation restricting portion 33 of the nozzle pressing device 30 does not reach the rotation end position. The rotational direction position Px of the portion 12 can be set within a desired angle range.

  The cap fastening device 200 shown in FIG. 7 is different from the cap fastening device 100 in that a nozzle pressing device 40 is used instead of the nozzle pressing device 30. The nozzle pressing device 40 is fixedly suspended and supported on a gantry (not shown), and a pneumatic rotary actuator 42 is provided at the lower end portion of a support shaft 41 that is passed through the center portion of the chuck rotation drive transmission portion 21 of the cap rotating device 20. It is held fixedly. The rotary actuator 42 has a rotation restricting portion 43 fixed to an output shaft that projects from the lower surface thereof and outputs a constant torque. The rotation restricting portion 43 can rotate at a constant angle in the same direction as the cap tightening direction N by the cap rotating device 20, and a torque Ta lower than the torque T 0 at which the nozzle portion 12 loosens from the ring portion 13 is opposite to the cap tightening direction N. Can be applied to the nozzle portion 12. At this time, the rotation restricting portion 43 is formed in a cup shape with a downward opening and includes a recessed portion 44 into which the head 12H of the nozzle portion 12 enters, and a nozzle insertion portion 45 into which the thin nozzle 12N of the nozzle portion 12 enters a part in the circumferential direction. Prepared with a notch.

  Therefore, the nozzle pressing device 40 puts the head 12H of the nozzle portion 12 into the recessed portion 44 of the rotation restricting portion 43 to which the output torque of the rotary actuator 42 is applied, and the nozzle portion into the nozzle insertion portion 45 of the rotation restricting portion 43. In the same manner as the nozzle pressing device 30 of the cap tightening device 100 in the process of screwing the cap portion 11 by the cap rotating device 20, the nozzle 12N is not popped up and the nozzle portion 12 The rotational direction position can be set within a desired angle range.

  In the nozzle pressing device 40, the pneumatic supply pipe line and the signal line wiring to the rotary actuator 42 are passed through the hollow portion of the hollow support shaft 41.

  The cap tightening device 300 shown in FIG. 8 is different from the cap tightening device 100 in that a cap rotating device 50 that replaces the cap rotating device 20 is employed. The cap rotation device 50 includes a chuck rotation drive transmission unit 21 in the cap rotation device 20, a chuck rotation drive transmission unit 51 similar to the chuck opening / closing cylinder 22, and a chuck opening / closing cylinder 52. Have The pressurizing and gripping portion 53 includes an annular tube 53A that surrounds the cap portion 11, and pressurizes the gas and / or liquid enclosed in the annular tube 53A that can be deformed according to the shape of the cap portion 11, A part or the entire circumference of the cap portion 11 is sandwiched by the inner side surface of the annular tube 53A, and the whole portion rotates, whereby the cap portion 11 can be rotated and screwed to the outer peripheral thread portion 3 of the container 1. Since the pressure grip 53 can be deformed, the cap 11 having various shapes can be rotated.

  The cap tightening device 400 shown in FIG. 9 is different from the cap tightening device 100 in that a cap rotating device 60 instead of the cap rotating device 20 is adopted. The cap rotation device 60 includes a chuck rotation drive transmission unit 21 in the cap rotation device 20, a roller rotation drive transmission unit 61 and a roller opening / closing device 62 that are substantially similar to the chuck opening / closing cylinder 22, and the roller rotation device 62 includes three rollers. The cap tightening roller 63 (rotating roller) is included. By rotating (rotating) each cap tightening roller 63 by the roller rotation drive transmission unit 61 in a state where the outer periphery of the cap unit 11 is gripped by the cap tightening roller 63 opened and closed by the cap tightening roller opening / closing device 62, the cap is rotated. The part 11 can be rotated and screwed to the outer peripheral thread part 3 of the container 1. By making the cap tightening roller 63 small in diameter, this inertia is small, and by using a servo motor as the roller rotation drive transmission unit 61, torque management for screwing the cap unit 11 can be performed accurately.

The disclosure of the present invention is as follows.
<1>
A cap portion that is rotated and screwed in a fixed cap tightening direction with respect to the container, and a flange that rotates freely with respect to the cap portion and is clamped against the container by the cap portion screwed to the container A ring portion provided, a nozzle portion that is rotated and screwed to the ring portion in the same direction as the cap tightening direction, and when the nozzle portion is rotated reversely to the cap tightening direction with respect to the ring portion, the nozzle portion is removed from the ring portion. A cap fastening device for a pump cap having a mechanism that is lifted and lifted upward, and that applies a torque lower than the torque that the nozzle portion loosens from the ring portion to the nozzle portion in a direction opposite to the cap fastening direction. And a cap rotating device that rotates the cap portion in the cap tightening direction with respect to the container. Cap clamping device of Pukyappu.

<2>
The nozzle pressing device is capable of rotating at a constant angle in the same direction as the cap tightening direction, and a rotation restricting portion that applies a torque lower than the torque at which the nozzle portion loosens from the ring portion to the nozzle portion in the direction opposite to the cap tightening direction. The cap tightening device for a pump cap according to <1>.

<3>
The nozzle pressing device is configured such that the rotation direction position of the nozzle portion at the start of screw tightening of the cap portion by the cap rotating device is constant in the direction opposite to the cap tightening direction than the desired position of the nozzle portion at the time of screw tightening of the cap portion. The cap tightening device for a pump cap according to <2>, wherein the angle is returned to the position.

<4>
The cap tightening device for a pump cap according to <3>, wherein the certain angle is any angle within a range of 10 degrees to 30 degrees.

<5>
The pump cap according to any one of <1> to <4>, wherein the cap rotating device includes two or more gripping portions sandwiching the cap portion, and the cap portion is rotated by rotating the entire gripping portion. Cap tightening device.

<6>
The nozzle pressing device holds a pneumatic rotary actuator fixedly at a lower end portion of a support shaft that is passed through a central portion of the chuck rotation drive transmission portion of the cap rotation device, and the rotary actuator protrudes from the lower surface and is fixed. The cap tightening device for a pump cap according to any one of <1> to <5>, wherein a rotation restricting portion is fixed to an output shaft that outputs torque.

<7>
The cap rotation device pressurizes gas or liquid or both inside the cap gripping portion that can be deformed according to the shape of the cap portion, so that the gripping portion sandwiches a part or the entire circumference of the cap, The cap tightening device for a pump cap according to any one of <1> to <6>, wherein the cap portion is rotated by rotating the whole.

<8>
The cap rotating device includes three or more rotating rollers that grip the cap part, and each of the rotating rollers rotates (spins) to rotate the cap part. <1> to <7> Pump cap cap tightening device.

<9>
The nozzle pressing device fixes the rotation restricting portion to the output shaft of the pneumatic rotary actuator, the rotation restricting portion can rotate at a constant angle in the same direction as the cap tightening direction, and is lower than the torque at which the nozzle portion loosens from the ring portion. The cap tightening device for a pump cap according to any one of <1> to <8>, wherein torque is applied to the nozzle portion in a direction opposite to the cap tightening direction.

<10>
<1>-<9> The container with a pump cap which carried out the cap fastening with the cap fastening apparatus.

<11>
A cap portion that is rotated and screwed in a fixed cap tightening direction with respect to the container, and a flange that rotates freely with respect to the cap portion and is clamped against the container by the cap portion screwed to the container A ring portion provided, a nozzle portion that is rotated and screwed to the ring portion in the same direction as the cap tightening direction, and when the nozzle portion is rotated reversely to the cap tightening direction with respect to the ring portion, the nozzle portion is removed from the ring portion. In the method of manufacturing a container with a pump cap, in which a pump cap having a mechanism that is lifted and lifted upward is attached to the container, a torque lower than the torque that the nozzle part loosens from the ring part in the process of screwing the cap part against the container A method of manufacturing a container with a pump cap on the nozzle portion in the direction opposite to the tightening direction.

<12>
The container with a pump cap manufactured by the cap fastening method of <11>.

  According to the present invention, when the cap portion is screwed to the container while keeping the nozzle portion of the pump cap at a desired rotational direction position, the ring portion is prevented from being rotated around the cap portion, and the nozzle portion is separated from the ring portion. It can be prevented from coming off and popping up.

DESCRIPTION OF SYMBOLS 1 Container 10 Pump cap 11 Cap part 12 Nozzle part 13 Ring part 13F Flange 20 Cap rotation apparatus 21 Chuck rotation drive transmission part 22 Chuck opening / closing cylinder 23 Grip part 30 Nozzle presser 32 Fixing part 33 Rotation restriction part 40 Nozzle presser 42 Rotary Actuator 43 Rotation restriction part 100, 200, 300, 400 Cap fastening device

Claims (5)

A cap portion that is rotated and screwed in a certain cap tightening direction with respect to the container, and a flange that rotates freely with respect to the cap portion and is clamped against the container by the cap portion screwed to the container A ring portion comprising: a nozzle portion that is rotated and screwed to the ring portion in the same direction as the cap tightening direction; and when the nozzle portion is rotated reversely to the cap tightening direction with respect to the ring portion, the nozzle portion is A cap tightening device for the pump cap, which has a mechanism that lifts upwardly away from the pump cap,
A nozzle pressing device that applies a torque lower than the torque at which the nozzle portion loosens from the ring portion to the nozzle portion in the direction opposite to the cap tightening direction;
A cap tightening device for a pump cap in which a cap rotating device that rotates a cap portion in a cap tightening direction with respect to a container is rotatably installed with respect to a nozzle pressing device.   The nozzle pressing device is capable of rotating at a constant angle in the same direction as the cap tightening direction, and a rotation restricting portion that applies a torque lower than the torque at which the nozzle portion loosens from the ring portion to the nozzle portion in the direction opposite to the cap tightening direction. The cap tightening device of the pump cap according to claim 1 provided.   The nozzle pressing device is configured such that the rotation direction position of the nozzle portion at the start of screw tightening of the cap portion by the cap rotating device is constant in the direction opposite to the cap tightening direction than the desired position of the nozzle portion at the time of completion of screw tightening of the cap portion. The cap tightening device for a pump cap according to claim 2, wherein the position is returned to an angle.   The cap cap according to any one of claims 1 to 3, wherein the cap rotation device includes two or more gripping portions sandwiching the cap portion, and the cap portion is rotated by rotating the entire gripping portion. Fastening device.   The container with a pump cap manufactured using the cap fastening apparatus of the pump cap in any one of Claims 1-4.

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