JPH08244886A - Capping device - Google Patents

Abstract

PURPOSE: To perform a capping under a state wherein a frictional force is not applied between the lug of a lug cap and the thread on a container. CONSTITUTION: A cap 6 is screwed on the mouth part of a container by lowering a chuck 4 to hold the cap 6 while the chuck 4 is being rotated. To the chuck 4, a load can be added downward by an air cylinder 18. On the chuck 4, a chuck rubber 58 which advances in the axial core direction and can press and hold the cap 6, and a cap receiving member 72 in which a magnet 78 is embedded are provided. By drawing the cap 6 by the magnet 78 and rotating the chuck 4, a temporary clamping is performed. When a torque being larger than the magnetism of the magnet 78 works, the magnet 78 and cap 6 slip. Then, by adding a load to the chuck 4, and at the same time, holding the cap 6 by the chuck rubber 58, a main clamping is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap having a packing for sealing inside, for example, a lug cap having packing inside (protrusions called a plurality of lugs are provided on the inside, and the lugs are the mouth portions of the container. The capping device is adapted to be screwed to the mouth of the container while compressing and deforming the packing inside the cap).

[0002]

2. Description of the Related Art A lug cap will be described as an example of a cap having a seal packing inside. As shown by the solid line in FIG. 3, the lug cap screwed to the mouth of the container has an inner peripheral surface of the skirt portion 6a of the cap 6,
A plurality of independent projections called lugs 7 are provided at equal intervals in the circumferential direction, and the lugs 7 are provided with a plurality of divided threads 9 provided at the mouth of the container 8 (see FIG. 4).
(Shown in phantom in FIG. 3). A packing 6b is attached to the inner surface of the lug cap 6 so that the inside of the container 8 can be completely sealed after the capping is completed. When the container 8 is capped with the lug cap 6 as described above, the cap 6 is held by the cap holding means and is rotated while lowering the cap holding means toward the lower container 8. The lug 7 of the cap 6 is provided with the screw thread 9 provided at the mouth of the container 8.
It is supposed to be concluded. Japanese Examined Patent Publication No. 3-11994 discloses an example of a capping device for such a rug cap.

FIG. 3 shows the position of the lug 7 with respect to the screw thread 9 at each stage when the lug cap 6 is screwed onto the container 8, and this figure shows the position of the lug cap 6.
The tightening process will be described. First, the cap holding means is lowered to fit the lug cap 6 into the mouth of the container 8. This position is the temporary fastening start position of the lug 7 (7A in FIG. 3). Subsequently, the cap holding means rotates to perform capping, and in the initial stage of this capping (temporary tightening section K in FIG. 3), no load is applied between the lug 7 of the lug cap 6 and the thread 9 of the container 8. Then, the packing 6b in the lug cap 6 is seated on the mouth of the container 8 (7B in FIG. 3). In this position 7B, the lug 7 engages the inner surface of the thread 9. After that, in the conventional capping device, the cap 6 is further rotated to compress and deform the packing 6b as the lug 7 advances with respect to the screw thread 9 of the container 8 and further tighten (see the final tightening in FIG. 3). Section L). After the tightening angle of the cap 6 is reached (7C in FIG. 3), the transmission of the rotational force to the cap holding means is blocked by a clutch or the like to complete the screw tightening.

In the conventional rug cap capping device generally used as described above, after the packing 6b in the cap 6 is seated on the mouth of the container 8, the packing 6b is compressed in the axial direction by the reaction force of the packing 6b. Since the friction between the screws (lug 7 and the screw thread 9) generated by the force becomes extremely large, when the strength of the screw (lug 7) on the cap 6 side is weak, the lug 7 is deformed and the so-called "lug opening" is performed. Alternatively, there was a possibility that the phenomenon of “twisting” would occur.

Therefore, in order to prevent the occurrence of the above problems, the frictional force between the screws generated by the reaction force of the packing after the packing inside the cap is seated on the mouth of the container is reduced to reduce the friction. A lid-clamping machine that can perform additional tightening without a cover has already been proposed (JP-A-54-12).
7783).

The lid fastening machine described in the above-mentioned publication (Japanese Patent Laid-Open No. 54-127783) is a device for supporting a lid to be mounted on a container and a device for rotating the lid supporting device around the axis of the lid. A clutch device that allows slippage between the lid support device and the rotating device when a predetermined torque is applied to the lid on the container, and a clutch device that engages the lid at the same time when the torque is applied and is mounted. A lid pressurizing device for applying axial pressure to the lid facing the container. The lid pressurizing device includes a cylinder into which air is introduced and a piston slidably fitted in the cylinder. The shaft fixed to the piston is rotated by the friction plate clutch device. It is adapted to be transmitted to the lid supporting device. In this lid fastening machine, when the torque increases due to the friction between the screws after the packing is seated, the friction plate type clutch device is caused to slide, then the air circuit is opened to introduce air pressure into the cylinder, and the lid support device The load is increased and the packing is deformed by the force, and the tightening is performed without screw friction.

[0007]

As described above, it is detected that the torque is increased by the friction plate type clutch device,
After that, with the method of increasing the load of the cap holding means, it is difficult to detect the torque with high accuracy, and thus it is difficult to perform optimum capping. Also, in the case of a configuration in which the friction plate type clutch device causes a slip when the torque exceeds a predetermined value, the set torque that can be detected by the slip of the clutch is large, so the load between the screws becomes large. Therefore, when the strength of the screw (lug) on the cap side is small like a lug cap, this lug may be deformed.

The present invention has been made to eliminate the above-mentioned drawbacks. The cap holding means and the cap are slipped when the tightening torque is extremely small, and then a load is applied to the cap holding means to push down the cap. SUMMARY OF THE INVENTION An object of the present invention is to provide a capping device that surely holds a cap and performs capping.

[0009]

A capping device according to the present invention is a cap holding means for holding a cap having packing inside, a rotating means for rotating the cap holding means, and an elevating means for elevating the cap holding means. A cap holding means for holding the cap is lowered toward the lower container to perform capping while compressing and deforming the packing in the cap,
Further, the cap holding means has a suction means for sucking the upper surface of the cap, a pressing body capable of holding the outer periphery of the cap, and a moving means for moving the pressing body between a position where the pressing body is pressed against the cap and a position where the pressing body is separated. In addition to the above, the cap holding means is provided with a load applying means for applying a load toward the lower container.

[0010]

In the above capping device, the upper surface of the cap is sucked by the suction means provided in the cap holding means, the pressing body is retracted to be in a separated state, and the cap holding means is lowered and rotated. At the initial stage of capping, capping is performed with a small tightening torque because the screw of the cap does not mesh with the thread of the mouth of the container. When the packing inside the cap is seated on the mouth of the container, the tightening torque increases and the cap holding means slips on the cap. Thereafter, a load is applied downward to the cap holding means, and further, the pressing body is moved to perform capping while being pressed against the cap. Since the packing is compressed by the load applying means to compress the packing, the tightening torque does not become excessive and stable capping is performed.

[0011]

The present invention will be described below with reference to the illustrated embodiments.
FIG. 1 is a vertical cross-sectional view showing a main part of a rug cap capping device according to an embodiment of the present invention. This capping device is a capping head (generally indicated by reference numeral 2).
The lug cap 6 is held by the chuck 4 provided at the lower end of the capping head 2, and the capping head 2 is rotated with respect to the container 8 held by the container gripper 84 (see FIG. 4) disposed below the capping head 2. The cap 6 is screwed to the mouth portion of the container 8 by lowering the cap 6 while making it descend. In addition, the rug cap 6
As shown in FIG. 3, a packing member 6b made of resin or the like fixed to the inner surface thereof or a seal member such as a ring-shaped packing made of an elastic material such as rubber is provided inside the packing 6b. Let the rug cap 6 be the container 8
The inside of the container 8 can be completely sealed by being fastened to the mouth of the container.

Next, the structure of the capping head 2 will be described in detail. A generally cylindrical housing 12 is fixed to the lower end of a first spindle 10 which is rotatably driven by being supported by a main body of a capping device (not shown), and the chuck 4 has a lower end portion in the cylindrical housing 12. A second spindle 14 attached to the is supported so as to be able to move up and down. The upper first spindle 10 is rotated by rotating means (not shown) such as a servo motor, and is also moved up and down by raising and lowering means (not shown) such as a cam. The rotating means and the elevating means are not limited to those described above.

The lower second spindle 14 is fitted in an inner cylinder 16 arranged in the upper portion of the cylindrical housing 12 so as to be able to move up and down. The key 18 is provided on the outer surface of the second spindle 14.
Is fixed and slidably fitted in a longitudinal long groove 16a formed on the inner surface of the inner cylinder 16, and the second spindle 14 is connected to the inner cylinder 16 in the rotational direction and relatively. It can be raised and lowered. Also, the inner cylinder 16 is
It is supported in the cylindrical housing 12 via a ball bearing 17 and can rotate relative to the cylindrical housing 12.

A spring 22 is provided between a bottomed cylindrical body 20 arranged downward in the upper end of the cylindrical housing 12 and a second spindle 14 whose upper end is fitted in the bottomed cylindrical body 20. By being elastically mounted, the second spindle 14 is constantly urged downward, and a load is applied to the chuck portion 4, which will be described in detail later, toward the lower container 8.

On the outer peripheral side of the inner cylinder 16, the torque control device 2 is provided.
4 is provided, and at a torque of a predetermined value or less, the second spindle 14 of the shaft core and the inner cylinder 16 that rotates integrally with the second spindle 14
And the upper first spindle 10 and the entire cylindrical housing 12 on the outer peripheral side fixed to the first spindle 10 are connected and integrally rotated. When the torque applied to No. 4 exceeds a set value, the upper first spindle 10 and the tubular housing 12 and the second spindle 14 inside thereof are provided.
By rotating the chuck part 4 and the chuck part 4 relative to each other, the transmission of the rotation from the first spindle 10 to the second spindle 14 is interrupted and the rotation of the chuck part 4 is stopped.

The lower side of the cylindrical housing 12, that is,
Below the torque control device 24, a cylinder portion (load adding means) 26 for applying a load to the chuck portion 4 toward the lower container 8 is provided. The bearings 28, 30 are provided on the outer periphery of the portion of the second spindle 14 located in the internal space of the cylinder portion 26.
The piston 32 is attached so as to be capable of relative rotation and to move up and down integrally via the. This piston 3
The seal members 34,
36 is fitted and slid on the inner and outer surfaces of the cylinder portion 26 while keeping airtightness, and the piston 32 divides the inside of the cylinder portion 26 into upper and lower chambers 38 and 40.
An air introduction port 42 is formed in the cylindrical housing 12, and is provided in a chamber 38 above the piston 32 of the cylinder portion 26.
Air can be introduced from an air pressure supply source (not shown).

A chuck portion 4 is provided on a portion of the second spindle 14 which projects downward from the cylindrical housing 12. A cap case 44 having a substantially cup-like shape is fixed slightly above the lower end of the second spindle 14 with the opening facing downward. An elevating cam 46 is slidably fitted between the outer peripheral surface of the end of the second spindle 14 extending into the cap case 44 and the inner peripheral surface of the cap case 44. Sealing members 48 and 50 are provided between the outer peripheral surface of the tip end portion of the second spindle 14 and the inner peripheral surface of the elevating cam 46, and between the outer peripheral surface of the elevating cam 46 and the inner peripheral surface of the cap case 44, respectively. A pressure chamber 52, which is attached and maintains airtightness, is formed between the lower surface of the cap case 44 and the upper surface of the elevating cam 46 and is hermetically sealed.

A horizontal guide plate 54 that projects to the inside of the cap case 44 is fixed to the lower end opening of the cup-shaped cap case 44, and on the horizontal guide plate 54 in the axial direction of the chuck portion 4. A sliding body 56 that can move back and forth is placed. This sliding body 56
Has a tapered surface 56a formed on the upper portion thereof in contact with a tapered surface 46a formed on the lower surface of the elevating cam 46. It is supposed to be pushed out. A chuck rubber 58 is fixed to the inner peripheral surface of the sliding body 56, and when the sliding body 56 advances toward the axial center direction of the chuck portion 4, the chuck rubber 58 holds the chuck rubber 58.
The lug cap 6 is held by being pressed against the outer peripheral surface of the.

The cylinder portion 26 of the cylindrical housing 12
Below this, an air inlet 60 for opening and closing the chuck rubber is provided which is connected to an air pressure supply source (not shown). The air inlet 60 includes a radial passage 62 formed in the lower portion of the cylindrical housing 12, a concave groove 64 on the inner surface of the cylindrical housing 12, and a radial and axial inner portion formed inside the second spindle 14. Via the passage 14a, etc.
The pressure chamber 52 is connected between the cap case 44 and the elevating cam 46. When air is introduced into the pressure chamber 52 from the air pressure supply source, the elevating cam 46 is pushed and descends, and the taper surface 46a at the lower end thereof pushes the sliding body 56 inward in the radial direction. .

A small cup-shaped supporting cylinder 68 is fixed to the lower end surface of the second spindle 14 with its opening facing downward. The upper surface of the support cylinder 68 and the elevating cam 46.
A spring 70 is interposed between the lifting cam 46 and the second spindle 14 and the cap case 44.
It always urges upward. On the other hand, the support cylinder 68
A cap receiving member 72 that is fitted from below and is capable of relative vertical movement is attached to the outer peripheral surface of the. The cap receiving member 72 is constantly urged downward by a spring 74 mounted elastically between its upper surface and the lower surface of the support cylinder 68. A roller 76 is fixed to the outer surface of the support tubular body 68, is engaged in a vertically long notch groove 72a formed in the tubular portion of the cap receiving member 72, and is urged downward by a spring 74. The lower limit of the cap receiving member 72 is restricted by the roller 76 engaging with the upper end of the notch groove 72a.

On the lower end surface of the cap receiving member 72, a recess 72b having a shape matching the shape of the upper surface of the lug cap 6 held by the chuck portion 4 is formed. Further, inside the cap receiving member 72, a magnet 78
The upper surface of the cap 6 supplied from the cap supply means described later is fitted into the recess 72b of the cap receiving member 72, and the cap 6 is attracted by the magnet 78 to be taken out. In order to accurately center and hold the cap 6, it is preferable to provide the recess 72a in the cap receiving member 72, but it is also possible to omit this recess.

The operation of the capping device having the capping head 2 having the above structure will be described. Figure 2
FIG. 3 is a diagram showing the entire arrangement of the capping device 100 according to an embodiment of the present invention in a simplified manner. The container 8 conveyed by the container conveyer 80 is positioned at a predetermined interval by an inlet star wheel 82. At the container transfer position A, the container is transferred to the capping device 100. The capping device 100 is provided with the capping heads 2 having the above-described configuration at equal intervals in the circumferential direction, and each capping head 2 is rotated (revolved) by rotation of the entire capping device 100 in the arrow R direction.
While rotating, it rotates (rotates) about the axis of the first spindle 10.

Below each of these capping heads 2, the container 8 supplied from the inlet star wheel 82 is provided.
A container gripper 84 for receiving and holding is disposed so as to be openable and closable, and the container 8 held by the container gripper 84 is capped by lowering and rotating the capping head 2. Note that the capping head 2 is not limited to be rotated while being lowered, and the capping head 2 may be first lowered to fit the cap 6 into the mouth portion of the container 8 and then rotated.

A cap supply means (for example, a cap disk 86 shown in FIG. 4) is provided above the container transfer position A from the inlet star wheel 82 to the capping device 100. The lug cap 6 supplied by 86 is taken out by the cap receiving member 72 of the chuck portion 4 at the cap taking-out position P (see FIG. 2).

The capping device 100 receives the container 8 and the cap 6 at the container transfer position A and the cap take-out position P, and while rotating, caps the cap 6 by screwing the cap 6 into the mouth of the container 8. The container 8 after the capping is completed is delivered to the exit star wheel 86 at the container delivery position H and discharged onto the discharge conveyor 88.

Next, the capping process performed by the capping device 100 will be described with reference to FIGS. 1 to 3 and FIGS. 4 to 8 which sequentially show the capping process. At the container transfer position A, the container 8 is supplied from the inlet star wheel 82 into the container gripper 84 in an open state, while at the upper cap take-out position P, the chuck 6 takes out the cap 6 from the cap disk 86. (See FIG. 4). The cap receiving member 72 in the chuck portion 4 has a concave portion 72b formed on the lower surface side that matches the upper surface of the cap 6, and the cap 6 has the concave portion 72b.
The magnet 78, which is fitted inside the cap receiving member 72 and is embedded inside the cap receiving member 72, is adsorbed and taken out (see FIG. 1).
(See the right side of the cap receiving member 72).

When the lug cap 6 is taken out, the entire capping head 2 is in the raised position, and the chuck opening / closing air introducing port 60 and the air pressure supply source are shut off from each other. Therefore, the cap case 44 and the lifting cam 46
Since air is not introduced into the pressure chamber 52 between the
The elevating cam 46 is raised by the spring 70, and the sliding body 56 to which the chuck rubber 58 is attached is retracted to the outer peripheral side. At this point in time, the pressure air has not been introduced into the chamber 38 above the cylinder portion 26 as the load applying means.

The upper capping head 2 holding the cap 6 and the lower container gripper 84 holding the container 8 are aligned in the upper and lower positions over the range A to B in FIG. 2, the container gripper 84 is closed to grip the container 8 and the capping head 2 is gradually lowered (see FIG. 5).

While the capping device 100 continues to rotate, the capping head 2 is further lowered, and the cap 6 attracted to the magnet 78 of the chuck 4 is fitted into the mouth of the container 8 (position C in FIG. 2). And FIG. 6). When the cap 6 is fitted into the mouth of the container 8, the lug 7 of the cap 6 is at the position 7A in FIG. After the cap 6 is fitted into the opening of the container 8, the cap 6 attracted to the magnet 78 of the cap receiving member 72 is screwed to the opening of the container 8 by the rotation of the capping head 2. At this stage, screw tightening is done with the cap 6
Is a temporary fastening step (range K in FIG. 3) before the packing 6b on the inner surface of the cap 8 is seated on the mouth of the container 8, and the cap lug 7
Moves from the position 7A to the position 7B in FIG. In this temporary tightening step, only the load by the spring 22 above the second spindle 14 and the load by the own weight of the second spindle 14 and the chuck portion 4 are applied to the second spindle 14 and the chuck portion 4. .

The cap lug 7 moves to the position 7B in FIG. 3 and enters the lower surface side of the screw thread 9 of the container 8, which screw thread 9
When the packing 6b is seated on the mouth of the container 8 while being pressed against the inclined part of the container 8, the tightening torque increases thereafter. Then, when the tightening torque becomes equal to or greater than the attraction force by the magnetic force of the magnet 78, the cap receiving member 72 slips with respect to the cap 6, the chuck 4 idles, and the cap 6 stops rotating (position D in FIG. 2 and the drawing). 7).

After that, the capping head 2 is rotated to the position E in FIG. 2 while the cap receiving member 72 is slipping on the lug cap 6 as described above,
At this E position, pressurized air is introduced into the cylinder portion 26 of the capping head 2. When air is introduced into the chamber 38 above the piston 32 of the cylinder portion 26, the piston 32 and the second second body integrated with the piston 32 are introduced.
The spindle 14 is pushed downward, and with respect to the chuck portion 4,
A load is applied in the direction of the lower container 8. By applying the load in this manner, the packing 6b on the inner surface of the cap 6 is crushed, and the lug 7 is screwed along the thread 9 while the cap 6 is lowered with respect to the mouth portion of the container 8. At the time of final tightening (range L in FIG. 3), the chuck portion 4 is in the state shown on the left side in FIG. After the slip is started (position D in FIG. 2), it is not necessary to rotate to position E before applying the load, and the timing for introducing air into the cylinder portion 26 to apply the load is as follows. It suffices to secure the number of rotations at which the lug 7 can reliably reach the seating position of the packing 6b from the number of rotations of the chuck 4.

Immediately thereafter (at the position F in FIG. 2), air is introduced from the chuck opening / closing air introducing port 60 into the pressure chamber 52 between the cap case 44 and the elevating cam 46 to move the elevating cam 46. Push down. When the elevating cam 46 descends,
The taper portion 46a on the lower surface pushes the sliding body 56, to which the chuck rubber 58 is attached, toward the shaft core of the chuck portion 4, and the chuck rubber 58 is pressed against the outer peripheral surface of the cap 6 to secure the cap 6 securely. Hold on. In this manner, the load is applied to the capping head 2 and the first spindle 10 is further rotated while the cap 6 is securely held by the chuck rubber 58, whereby the lug cap 6 is rotated again, and the lug 7 is rotated. Are fastened to the threads 9 of the container 8. In this embodiment, after the air is introduced into the cylinder portion 26, the air for opening and closing the chuck is introduced with a delay, but both air may be introduced at the same time.

When the cap lug 7 reaches the tightening end position shown in 7C of FIG. 3, the tightening torque becomes a predetermined magnitude or more, and the torque regulating device 24 operates to cause the first spindle 10 and the second spindle 14 to operate. Transmission of the rotational force between and is interrupted, the chuck portion 4 idles, and capping is completed. After that, at position G in FIG. 2, the load-applying air in the cylinder portion 26 and the chuck opening / closing air in the chuck portion 4 are released to the atmosphere, and then the capping head 2 is raised. The container 8 that has been capped is delivered to the ejection star wheel 86 at the container delivery position H in FIG.

In this way, when the lug 7 of the lug cap 6 engages with the thread 9 of the container 8 and the packing 6b in the cap 6 is temporarily tightened until it is seated in the mouth of the container 8, the cap 6 is fixed. By holding it only by the magnetic force of the magnet 78 without holding it by the chuck rubber 58,
Before the tightening torque sharply increases, the chuck 4 and the cap 6 are slipped, and after the packing 6b is seated, a load is applied to the chuck portion 4 in the direction of the container 8 to compress the packing 6b, And chuck rubber 58
Since the cap 6 is pressed and held by this to perform the final tightening, capping can be performed without friction between the lug 7 of the cap 6 and the screw thread 9 of the container 8, and the capping is accurate and reliable. Capping can be done. Further, as in the conventional capping device, it is possible to prevent the phenomenon such as so-called “twist fool” from occurring due to deformation due to excessive tightening torque or small cap lug strength. .

In the above embodiment, the chuck rubber 58 remains retracted while the cap 6 is taken out and temporarily tightened. However, when the cap 6 is taken out or immediately after taking it out, the chuck rubber 58 is once chucked. It is also possible to improve the centering accuracy of the cap 6 by moving the rubber 58 forward and backward and pressing the periphery of the cap. Further, in the configuration of the above embodiment, the magnet 78 is embedded in the cap receiving member 72, and the cap is attracted by the magnet 78 during the process of taking out the cap 6 and the temporary tightening process. Vacuum pressure can also be used.

[0036]

As described above, according to the present invention, the cap holding means for holding the cap having the packing inside, the rotating means for rotating the cap holding means, and the elevating means for moving the cap holding means up and down. With and
In a capping device that lowers a cap holding means holding a cap toward a lower container and performs screw tightening while compressing and deforming a packing in the cap, a suction means for adsorbing an upper surface of the cap to the cap holding means. And a pressing body capable of holding the outer periphery of the cap, and a moving means for moving the pressing body to a position where the pressing body is pressed against the cap and a position where the pressing body is separated from the cap, and the cap holding means is directed toward the lower container. A load applying means for applying a load is provided, and by rotating the cap holding means, the cap is tightened to the mouth of the container, and after the tightening torque exceeds the suction force of the suction means and the cap slips, the cap holding means Cap is applied by applying load and operating the moving means to press the pressing body against the outer surface of the cap. By holding and tightening the screw, capping can be performed from the beginning to the end of tightening without a large frictional force acting between the screw of the cap and the thread of the container. It is possible to perform accurate and reliable capping, and it is possible to prevent the phenomenon of "dumbness" from occurring due to deformation of the screw of the cap.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a main part (capping head) of a lug cap capping device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an overall arrangement of the capping device.

FIG. 3 is an explanatory view showing a process of tightening the lug of the lug cap and the screw thread of the container.

FIG. 4 is a diagram showing a first step of a capping step performed by the capping device.

FIG. 5 is a diagram showing a step that is the next step from the capping step shown in FIG.

FIG. 6 is a diagram showing a step that is the next step from the capping step shown in FIG.

FIG. 7 is a diagram showing a step that is the next step from the capping step shown in FIG.

FIG. 8 is a diagram showing a step that is the next step from the capping step shown in FIG. 7.

[Explanation of symbols]

 4 cap holding means (chuck) 6 cap (lug cap) 6b packing 8 container 26 load applying means (cylinder part) 46 moving means (elevating cam) 56 moving means (sliding body) 58 pressing body (chuck rubber) 78 adsorption means ( magnet)

Claims (1)

[Claims] 1. A cap holding means for holding a cap, comprising: a cap holding means for holding a cap having packing inside; a rotating means for rotating the cap holding means; and an elevating means for moving the cap holding means up and down. In the capping device that lowers the means toward the lower container and compresses and deforms the packing in the cap and tightens the screw, the cap holding means can hold the suction means for sucking the upper surface of the cap and the outer circumference of the cap. A pressing body and a moving means for moving the pressing body to a position where the pressing body is pressed against the cap and a position where the pressing body is separated from the cap, and a load applying means for applying a load to the cap holding means toward the lower container. Is provided and the cap is fastened to the mouth of the container by the rotation of the cap holding means. After the cap has slipped over the suction force of the attachment means, a load is applied to the cap holding means and the moving means is operated to press the pressing body against the outer surface of the cap to hold the cap and tighten the screw. Capping device characterized by performing.