JPH05330516A - Holding device for cylindrical article - Google Patents

Abstract

PURPOSE:To provide a cylindrical article-holding device that is capable of holding cylindrical articles at their circumferences indiscriminately without regard to their diameters and lengths. CONSTITUTION:A first spindle 3, capable of making free rotation, is provided to a machine body 2 and a second spindle 4, capable of making free rotation, is inserted concentrically into the first spindle 3. A pair of swing arms 6 and 7, equipped with holding faces 11 and 12 at their external sides, are fixed at their bases to the first spindle 3 and the second spindle 4 and at the same time, a driving means 8 is connected either to the first sprindle 3 or the second spindle 4 while a synchronous means 9 is provided to the first spindle 3 and the second spindle 4 for synchronizing rotations of the two spindles. Thereby cylindrical articles in different diameters ranging from large to small can be held indiscriminately. Since the center of holding can be kept constantly at a fixed point, holding of cylindrical articles in different diameters can be made by a single type of holder without the need for preparing holding devices or attachments for individual purpose while time and labor are not required therefor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device capable of uniformly gripping various types of cylindrical articles having different diameters.

[0002]

2. Description of the Related Art Cylindrical articles such as containers for filling and packaging liquids or caps thereof have various shapes depending on the properties and uses of the contents, and in particular, the outer shape of the neck or body. As shown in FIG. 7, various products are provided on the market, and machines for processing and processing cylindrical articles having different diameters, for example,
Filling machines, lidding machines, washing machines, cutting machines for containers, etc., and container feeding / extracting machines to / from these machines are large and expensive. In the processing, it is general to use the above-mentioned one machine to correspond to the various types of containers for general use.

However, as shown in FIGS. 8 (a) to 8 (b),
When trying to grip different articles 41a to 41d by using a kind of gripping device 40, the one that grips the cylindrical article 41a having a small diameter, as shown in FIG. The gripping position is the normal position (shown in FIG. 8B), that is, the base line p-
As shown in FIGS. 8 (c) and 8 (d), when the center of the article is moved inwardly by an amount of x with respect to p, the article is moved to an incorrect gripping position and the cylindrical articles 41c and 41d having a large diameter are gripped. , The gripping positions of the gripping bodies 42, 42 are moved outward by y and z from the normal position (base line pp) to the incorrect gripping center, and both of them are articles.
41a, 41c, 41d cannot be gripped at the same position, so these cylindrical articles 41a having different diameters
In order to grip ~ 41d at the same position, a part of the above-mentioned machine, that is, the gripping device or the attachment is exchanged for each article to give its versatility.

However, the replacement of the above-mentioned gripping device or attachment must be carried out after stopping all the machines and related equipment such as a product transfer line, which requires a large amount of work and requires a great deal of replacement time. Therefore, the work efficiency decreases.

Further, recently, the processing and processing of a small amount and a large variety of products are increasing, and it is necessary to prepare different gripping devices or attachments for that purpose in advance, which makes it difficult to manage these parts and store them. However, as a result, the cost of the product was increased.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and a machine body is provided with a rotatable first shaft, and the first shaft is provided with a rotatable second shaft. Concentrically inserted and fixed to the first shaft and the second shaft, a pair of rotating arms having a gripping surface on the outer side of the base and fixed to one of the first shaft and the second shaft. By coordinating the driving means of the rotating arm and by providing the rotation synchronizing means on the first shaft and the second shaft, even the cylindrical articles having different diameters can be uniformly gripped on the outer periphery thereof. Is something that
It is possible to always contact the gripping body so that the center position of the gripping body is constant, and to support an upper support shaft that supports the upper rotating arm on a movable body that can move up and down, so that cylindrical articles having different lengths can be used. Another object of the present invention is to provide a gripping device for a cylindrical article that allows uniform gripping.

[0007]

The means of the present invention for achieving the above-mentioned object is to provide a rotatable first shaft provided on the machine body in the vicinity of a mounting position of a cylindrical article on the machine body, A rotatable second shaft concentrically inserted into the first shaft, the bases of the first shaft and the second shaft are fixed to each other, and a substantially V-shaped gripping surface is provided on the outer side of the first shaft and the second shaft. And a pair of rotating arms that rotate relative to each other right and left, a driving means for the rotating arm linked to one of the first shaft and the second shaft, and the first shaft and the second shaft. This is in the configuration of the rotation tuning means and the cylindrical article gripping device provided.

Further, in the vicinity of the mounting position of the cylindrical article on the machine body, a lower shaft comprising a second shaft which is concentrically inserted into a rotatable first shaft provided on the machine body and is rotatable. A shaft and a first shaft that is rotatable above the lower support shaft so as to be opposed to each other so as to be arranged on the same axis as the lower support shaft,
An upper support shaft composed of a second shaft that is concentrically inserted and rotatable, and respective bases are fixed to the first shaft and the second shaft of these lower and upper support shafts, and to the outer part thereof. Driving a pair of rotating arms that have a substantially V-shaped gripping surface and rotate relative to the left and right, and a rotating arm that is linked to one of the first and second shafts of the lower and upper support shafts. Means and rotation tuning means provided on the first and second shafts of the lower and upper support shafts, and the driving means is provided on the main shaft provided on the machine body and at one end of the main shaft. An operating member that engages with the attached operation member, a lower transmission member that engages with a lower passive member that is attached to an intermediate portion of the main shaft and that is attached to one of the first shaft and the second shaft of the lower support shaft, and the main shaft. Attached to the other end of the upper support shaft to engage with an upper passive member attached to either the first shaft or the second shaft of the upper support shaft. In the configuration of the gripping device and the transmission member was allowed a cylindrical article.

Further, in the vicinity of the mounting position of the cylindrical article on the machine body, a lower support comprising a second shaft, which is concentrically inserted into and rotatable with a first shaft provided on the machine body and rotatable. A shaft and a movable body mounted above the lower support shaft so as to be able to move up and down to the machine body by an elevating means, and are rotatable so as to be installed on the movable body so as to be arranged on the same axis as the lower support shaft. To the first shaft, which is concentrically inserted and rotatable, and an upper support shaft, which includes a rotatable second shaft, and the bases of the lower and upper support shafts are fixed to the first shaft and the second shaft, respectively. And a pair of rotating arms that have a substantially V-shaped gripping surface on the outer side thereof and rotate relative to each other in the left-right direction, and are linked to one of the first and second shafts of the lower and upper support shafts. The driving means for the rotating arm and the rotation of the lower and upper support shafts provided on the first shaft and the second shaft. The drive means includes a main shaft provided on the machine body, an operating member that engages with an operation member attached to one end of the main shaft, and a sliding connecting shaft that is inserted into the main shaft. A lower transmission member that is attached to the intermediate portion and that engages with a lower passive member that is attached to one of the first shaft and the second shaft of the lower support shaft; and an upper transmission shaft that is attached to the other end of the sliding communication shaft. In the configuration of the cylindrical article gripping device, an upper transmission member that engages with an upper passive member attached to one of the first shaft and the second shaft is provided.

Then, lower and upper transmission force adjusting means are respectively linked to the lower transmission member and the upper transmission member.

[0011]

The gripping device for a cylindrical article of the present invention having the above-described structure has the following effects.

The gripping device for a cylindrical article according to the present invention is used for processing and
The rotating arm, which is attached to the processing machine and is supported by the first shaft and the second shaft in accordance with the operation of the driving means, grips the cylindrical article supplied to the mounting position in the apparatus. In the direction, that is, inward, the relative rotation of the respective shafts starts to relatively rotate.

At this time, since the rotation centers of the pair of rotation arms are concentric, the substantially V-shaped gripping surfaces uniformly move toward the center positions of cylindrical articles having different outer shapes. The pair of gripping surfaces move, and the pair of gripping surfaces oppose each other uniformly from both sides of the cylindrical article and are gripped by a predetermined pressure.

Further, by vertically adjusting the movable body to which the upper support shaft is attached by the elevating means, the gripping height of the rotating arm attached to the upper support shaft can be arbitrarily changed, as shown in FIG. However, even if the cylindrical articles have different heights, they are uniformly gripped.

Further, by connecting a transmission force adjusting member to the lower transmission member and the upper transmission member for transmitting the rotation to the lower support shaft and the upper support shaft, the upper and lower parts of the cylindrical article as shown in FIG. Even if there is a difference in outer shape at the gripping position, the support shaft of the rotating arm that is in contact with one of the large diameter parts slips, and uniform gripping is performed by the drive means that provides one system of rotation. ..

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cylindrical article gripping device according to the present invention will now be described with reference to the drawings.

The apparatus A for gripping a cylindrical article of the present invention fills a cylindrical article 1, for example, a cylindrical container 1 having a circular sectional shape and a predetermined height as shown in FIG. 7 with a liquid or a fluid. Such as a filling machine, a capping machine for winding and capping the container 1, a washing machine for the container, a cutting machine for the container, a feeding machine for the container 1, and a feeding machine for the machine. It is adopted in a so-called processing machine.

In FIG. 1 and FIG. 2, A is a first embodiment device according to the present invention, which is used in the above-mentioned processing machine, for example, a lid-applying machine, and in which the machine body 2 is attached. Support shaft 5 including first shaft 3 and second shaft 4 provided
And a pair of rotating arms 6 and 7 fixed to the first shaft 3 and the second shaft 4, and driving of the rotating arms 6 and 7 linked to one of the first shaft 3 and the second shaft 4. Means 8 and said first shaft 3
It is basically configured by the rotation tuning means 9 provided on the second shaft 4 and the second shaft 4. In this example, one position around the outer peripheral portion of the container 1 is sandwiched and gripped.

A large number of the support shafts 5 are provided at intervals in the disk-shaped mounting plate 10 in the vicinity of the placement position 2a of the article 1 in the machine body 2 (only one is shown in the drawing).
Among these, the first shaft 3 is rotatably mounted to the mounting plate 10 via a bearing, and the second shaft 4 is mounted inside the hollow first shaft 3. The shafts are concentrically, that is, rotatably inserted through bearings on the same axis line r-r. Therefore, the first shaft 3 and the second shaft 4 are rotated about the same rotation center. It is a thing.

The pair of rotating arms 6 and 7 have a predetermined grip width for the body 1 of the article, and their bases are fixed to the first shaft 3 and the second shaft 4 of the support shaft 5, respectively. In addition, the outer surface of the gripping surfaces 11 and 12 is substantially V-shaped.
Are formed so as to oppose each other, and these left and right are relatively rotated by a tuning means 9 described later.

The rotating arm 6 is fixed to a half-shaped mounting piece 13 attached to the upper part of the first shaft 3,
The rotating arm 7 is a half-mounting piece attached to the upper part of the second shaft 4 in the same plane as the rotating arm 6.
It is fixed to 14 and formed so as not to interfere with each other when opening and closing these.

The driving means 8 is linked to either one of the first shaft 3 and the second shaft 4 of the support shaft 5, for example, the first shaft 3 and the rotating arm 6 via the tuning means 9. 7 is a drive mechanism for opening and closing, and a lever-shaped operation member 15 is fixed to the lower part of the drive spindle e attached to the attachment plate 10 of the machine body 2, and a cam shape that abuts against a roller 16 attached to the end of this operation member 15. The operating member 17 is opened and closed at a predetermined timing, and the ammunition 18 linked to the drive spindle e constantly urges the roller 16 to engage with the operating member 17.

A transmission member 19 such as a gear attached to an intermediate portion of the drive main shaft e is meshed with a first passive member 20 such as a gear attached to the first shaft 3, and the lever is operated by the cam operation. The first shaft 3 is made rotatable by the swinging of the first shaft 3, and the first passive member 20 is rotated by the second shaft via the tuning means 9 such as a gear provided on the mounting plate 10 and the like. Four
The symmetrical rotation of the second passive member 22 attached to the lower part of the is transmitted to the rotating arm 7.

Therefore, the device of the first embodiment has the above-described structure, and as shown in FIGS.
Articles 1a having different outer shapes supplied to the mounting position 2a of
When gripping 1d, even if the opening degrees of the rotating arms 6 and 7 are different due to the difference in outer diameter, the base line p shown in FIG.
Since the center of the article is always positioned and gripped on -p, the article 1 can be fed to the correct position desired by the processor.

The first embodiment is shown in FIGS.
In addition to the support shaft 5 shown in FIG. 3, which is configured as a double shaft by the second shaft 4 inserted into the hollow first shaft 3, FIG.
As shown in Fig. 2, a mounting plate provided on the machine body 2 (not shown)
Attach the rotatable first shaft 3 to 10, and further attach the mounting plate
An upper mounting plate 10b is attached to the upper end portion of the drive main shaft e supported on the shaft 10, and a second shaft 4 is rotatably supported on the upper mounting plate 10b on the same axis line r-r as the first shaft 3. The structure of the shaft 5 can also be adopted, and these first and second shafts 3, 4
The rotary arms 6 and 7 are respectively attached to the drive arms 8 and 7. The drive means 8 and the tuning means 9 are substantially the same as the above-mentioned configurations, and therefore detailed configurations and operations are omitted. However, the first and second passive members 20 and 22 with which the tuning means 9 meshes are the second shaft 4 and the first shaft 3 respectively.
Attached to and.

Next, in FIG. 4, A is a second embodiment apparatus according to the present invention, which is used in a processing machine similar to the first embodiment apparatus, and includes a lower first shaft 3a and a lower shaft 3a. 2nd axis 4a
A lower support shaft 5a including an upper support shaft 5b including an upper first shaft 3b and an upper second shaft 4b, and lower rotating arms 6a and 7a fixed to the lower support shaft 5a and the upper support shaft 5b. And the upper rotation arms 6b and 7b, and the first shafts 3a and 3b or the second shaft 4a of the above-mentioned upper support shafts 5a and 5b.
Drive means 8 linked to one of the 4b and the first shafts 3a, 3b
And the rotation tuning means 9a and 9b provided on the second shafts 4a and 4b. In this example, the body 1 of the container 1 and the neck outer diameter portion are sandwiched at two locations. To hold.

The lower support shaft 5a described above is used for the body 2
In the vicinity of the placement position 2a of the article 1 in the above, a large number (only one is shown in the figure) are provided at intervals on the disc-shaped attachment plate 10a, of which the lower first shaft 3a is the above-mentioned attachment. The lower second shaft 4a is rotatably attached to the plate 10a via a bearing, and the lower second shaft 4a is concentrically inserted into the lower first shaft 3a via a bearing. The first shaft 3a and the lower second shaft 4a are rotated about the same rotation center.

The upper support shaft 5b is the lower support shaft 5a.
Above the above, a movable body 24 which is attached to the machine body 2 by an elevating means 23 so as to be able to move up and down is installed so as to be arranged on the same axis as the lower support shaft 5a. The shaft 3b is rotatably attached to the movable body 24 via a bearing, and the upper second shaft 4b is concentrically inserted into the upper first shaft 3b via a bearing so as to be rotatable. Yes, and thus these upper first axis 3b and upper second axis 4b
Are rotated about the same rotation center, and the lower support shaft 5a and the upper support shaft 5b have the same rotation center.

The above-mentioned pair of lower and upper rotating arms 6a,
The bases 7a, 6b, and 7b are fixed to the first shafts 3a and 3b and the second shafts 4a and 4b of the lower and upper support shafts 5a and 5b, respectively, and the outer parts thereof are substantially V-shaped. Gripping surface 11a
, 12a and 11b, 12b are formed so as to oppose each other, and the left and right of these are relatively rotated by tuning means 9a, 9b described later.

The lower turning arm 6a is fixed to a half-shaped mounting piece 13a attached to the upper portion of the lower first shaft 3a, and the lower turning arm 7a is the lower turning arm. In the same plane as 6a, they are fixed to a half-divided mounting piece 14a attached to the upper part of the lower second shaft 4a, and they are formed so that they do not interfere with each other when they are opened and closed.

Further, the above-mentioned upper turning arm 6b is fixed to a half-shaped mounting piece 13b attached to the upper part of the above-mentioned first upper shaft 3b, and the upper turning arm 7b is said upper turning arm 6b. In the same plane as the arm 6b, the arm 6b is fixed to a half-divided mounting piece 14b attached to the upper part of the second upper shaft 4b so that they do not interfere with each other when they are opened and closed.

The driving means 8 is composed of the lower and upper support shafts 5.
One of the first shafts 3a, 3b or the second shafts 4a, 4b of a, 5b, for example, the lower and upper first shafts 3a, 3b are linked to rotate downward and upward via tuning means 9a, 9b. The arms 7a and 7b are driven to open and close, and the structure thereof is substantially the same as that of the first embodiment described above. A hollow main shaft 25 is provided on the mounting plate 10a of the machine body 2 and operated below the hollow main shaft 25. The member 15 is fixed and opened / closed at a predetermined timing by a cam-type actuating member 17 that comes into contact with a roller 16 attached to the end of the operating member 15, and is always opened by an ammunition 18 linked to the hollow main shaft 25. The roller 16 is urged to engage the operating member 17.

A spline-shaped sliding shaft 26 is inserted into the hollow main shaft 25 so that it can slide vertically and rotate integrally with the hollow main shaft 25. A lower transmission member 19a such as a gear attached to the intermediate portion of 26 is meshed with a first passive member 20a such as a gear attached to the lower first shaft 3a, and a gear attached to the upper portion of the sliding communication shaft 26. An upper transmission member 19b, etc., is meshed with a first passive member 20b such as a gear attached to the upper first shaft 3b, and the lever 15 is swung by the cam operation to move the lower and upper first shafts.
3a and 3b are rotatable, and further, the first passive member 20a
, 20b are rotated by means of the mounting plate 10a and the tuning means 9a, 9b such as gears provided on the movable body 24 and the like.
It is transmitted to the second passive members 22a and 22b attached to the lower portions of 4a and 4b, and the symmetrical rotation is transmitted to the rotation arms 7a and 7b.

As shown in FIG. 4, the elevating means 23 has a screw shaft 28 screwed onto a female screw piece 27 of the machine body 2 so that the screw shaft 28 can be moved up and down, and the screw shaft 28 is driven by a motor (not shown). The movable body 24, that is, the upper rotating arms 6b and 7b can be raised and lowered to an arbitrary position by rotating the movable body 24, etc.
The gripping device A is capable of gripping
When it is used for filling an article 1 (container) with a fluid or the like, winding a container cap, or the like, a large number of sets are attached to a rotary body of the rotary type.
Is formed in a rotatable disc shape, and the elevating means 23 is configured to correspond to the movements of the rotating mounting plate 10a and movable body 24.

In FIGS. 4 and 5, reference numerals 29 and 30 denote lower and upper transmission members 19a and 19b, respectively.
By the upper transmission force adjusting means, the friction body 3 is applied to the lower and upper transmission members 19a, 19b by the pressing force of a predetermined pressure by the bullets 31, 32.
3, 34 are pressed against each other, and rotating arms 6a, 7a and 6b, 7
When the turning force of b exceeds the set pressure, the bullets 31, 32
Sliding against the friction bodies 33 and 34 against the sliding
The rotation of 26 is not transmitted to the lower and upper transmission members 19a and 19b.

Therefore, as shown in FIG. 4, when gripping an article 1 having a diameter difference between the lower body diameter and the upper neck diameter, both arms 6a, 7a and 6b, 7b start to rotate and move downward. When the moving arms 6a, 7a are in contact with the lower body and are gripping the lower body, the upper rotating arm is still moved to the upper neck due to the difference in diameter of the article 1.
6b and 7b do not reach and are not gripped by this.

Therefore, the lower transmission member 19a causes a slip between the lower transmission member 19a and the friction body 33, and the lower rotation arms 6a and 7a.
The lower body of the article is gripped without giving excessive turning force to the upper turning arms 6b and 7b as the sliding shaft 26 rotates.
When the arms 6b, 7b grip the upper neck of the article, the drive means 8 stops the rotation of the sliding shaft 26.

The operation of the gripping state in the second embodiment is the same as that of the device of the first embodiment, so the detailed description thereof will be omitted.

[0039]

The cylindrical article gripping device of the present invention configured as described above is capable of uniformly gripping a cylindrical article having a large diameter to a small diameter, and the gripping position is also at the article mounting position. On the other hand, since they are made at the same position, the cylindrical articles having different diameters can be easily grasped or the articles having different heights can be easily operated by one touch by a single device only by vertically adjusting the upper turning arm.

Therefore, it is not necessary to replace the gripping device or the attachment each time the outer diameter or the height of the cylindrical article is changed, which is required in the prior art, and the working time and the labor required therefor are not necessary, which is a great saving. It can be humanized, and it is extremely effective for processing and processing small quantities of various types of cylindrical articles.

Further, since the replacement of the gripping device and the attachment is eliminated, the preparation space, the storage space required for the management, and the operator are not required, and the cost reduction purpose can be achieved. It has special effects such as.

[Brief description of drawings]

FIG. 1 is a side view in which a first embodiment of a gripping device for a cylindrical article according to the present invention is partly longitudinally cut.

FIG. 2 is a plan view of FIG.

FIG. 3 is a side view showing another example of the support shaft in FIG.

FIG. 4 is a side view in which a part of the second embodiment of the cylindrical article gripping device according to the present invention is longitudinally cut.

5 is a cross-sectional view showing a main part of the transmission force adjusting means in FIG.

FIG. 6 is an explanatory view showing each example of a gripping state of a different-diameter article by the cylindrical article gripping device according to the present invention.

FIG. 7 is a front view schematically showing the outer shape of a cylindrical article used in the device of the embodiment of the present invention.

FIG. 8 is an explanatory diagram showing each example of a gripping state of a different-diameter article by a conventional article gripping device.

[Explanation of symbols]

 1 Cylindrical article 2 Airframe 2a Placement position 3 First shaft 3a Lower first shaft 3b Upper first shaft 4 Second shaft 4a Lower second shaft 4b Upper second shaft 5 Support shaft 5a Lower support shaft 5b Upper support shaft 6 , 7 Rotating arms 6a, 7a Lower rotating arms 6b, 7b Upper rotating arm 8 Driving means 9 Tuning means 11,12 Gripping surface 19, Transmission member 20 Passive member

Claims (4)

[Claims] 1. A rotatable first shaft provided on the machine body in the vicinity of a mounting position of a cylindrical article on the machine body, and a rotatable second shaft concentrically fitted to the first shaft. The bases are fixed to the first shaft and the second shaft, respectively, and
A pair of rotating arms that have a substantially V-shaped gripping surface on the outer side thereof and rotate relative to each other in the left and right direction, and a driving means for the rotating arm that is linked to one of the first shaft and the second shaft. And a rotation tuning means provided on the first shaft and the second shaft. 2. A lower support comprising a second shaft, which is concentrically inserted into a rotatable first shaft provided on the machine body and is rotatable in the vicinity of a mounting position of a cylindrical article on the machine body. A shaft and a second shaft, which is concentrically inserted and rotatably fitted to a rotatable first shaft which is installed above the lower shaft so as to be arranged on the same axis as the lower shaft. And an upper support shaft composed of and a base portion fixed to the first shaft and the second shaft of the lower and upper support shafts, and a substantially V-shaped gripping surface is provided on the outer side of the support shaft. Pair of pivoting arms that pivotally move,
Driving means for a rotating arm linked to one of a first shaft and a second shaft of the lower and upper support shafts, and synchronization of rotation provided on the first and second shafts of the lower and upper support shafts. The drive means includes a main shaft provided on the machine body, an operating member that engages with an operation member attached to one end of the main shaft, and a first member of the lower support shaft attached to an intermediate portion of the main shaft. A lower transmission member that engages with a lower passive member attached to one of the first shaft and the second shaft, and an upper passive member that is attached to the other end of the main shaft and attached to one of the first shaft and the second shaft of the upper support shaft. A gripping device for a cylindrical article, comprising: an upper transmission member that engages with the member. 3. A lower support comprising a second shaft, which is concentrically inserted into a rotatable first shaft provided on the machine body in the vicinity of a mounting position of a cylindrical article on the machine body, to be rotatable. A shaft, a movable body mounted above the lower support shaft so as to be capable of moving up and down by an elevating means to the machine body, and provided so as to be opposed to the movable body so as to be arranged on the same axis as the lower support shaft, and are rotatable. An upper support shaft composed of a second shaft that is concentrically inserted into the first shaft and is rotatable, and respective bases of the lower and upper support shafts are fixed to the first shaft and the second shaft, and , A pair of rotating arms that have a substantially V-shaped gripping surface on the outer side thereof and rotate relative to each other in the left-right direction, and are linked to one of the first and second shafts of the lower and upper support shafts. A drive means for the rotating arm, and a rotation synchronizing means provided on the first and second shafts of the lower and upper support shafts, The drive means includes a main shaft provided on the machine body, an operating member that engages with an operating member attached to one end of the main shaft, and an intermediate portion of a sliding connecting shaft that is inserted into the main shaft. A lower transmission member that is attached to engage a lower passive member that is attached to either the first shaft or the second shaft of the lower support shaft, and the first shaft of the upper support shaft that is attached to the other end of the sliding communication shaft. Or an upper transmission member that engages with an upper passive member attached to one of the second shafts. 4. The lower transmission member and the upper transmission member,
The apparatus for gripping a cylindrical article according to claim 2 or 3, wherein lower and upper transmission force adjusting means are associated with each other.