JPH113664A - Device for holding cylindrical glass members - Google Patents

Abstract

(57) [Problem] To provide a holding device for a cylindrical glass member which can always hold a center axis at a constant position even when the neck portion of a cathode ray tube has a different thickness. SOLUTION: A holding member 6 having an engagement portion 7 of a neck portion.
Is fixed to the base 1 and the holding member support 4 to which
The guide shaft 3 that movably supports the holding member support 4 in a straight line, a stopper 14 that is fixed to the base 1 and that allows the holding member support 4 to abut and adjust the abutting position, and the other holding member 11 A holding lever 9 rotatably supported by the base 1, and supported by the holding member support 4 and the holding lever 9 to pivot the rotation range of the holding lever 9 from the holding position for holding the neck portion to the opposite position. And a spring 10 for generating a force for pressing the holding member 11 against the neck portion when the holding lever 9 is at the holding position, and the holding member support 4 abuts against the stopper 14 when the holding lever 9 is at the holding position. And a spring 5 for generating a force for holding the holding lever 9 at the holding position or the open position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holding device for holding and positioning a cylindrical glass member such as a neck portion of a cathode ray tube, for example, when processing the member. The present invention relates to a holding device for a cylindrical glass member, which can hold a center axis at a fixed position even when the diameter changes.

[0002]

2. Description of the Related Art A neck holding device used in a cathode ray tube sealing device will be described below as an example of a cylindrical glass member holding device. FIG. 10 shows, for example, JP-A-61-264632.
FIG. 1 is a perspective view showing a neck holding device (neck chuck) for a cathode ray tube sealing device disclosed in Japanese Unexamined Patent Publication (Kokai) Publication. In the figure, reference numeral 23 denotes a holding lever intersecting at the center, and 24 denotes a holding lever 23
The reference numeral 25 denotes a V-shaped engaging recess formed at the inside of one end of the holding lever 23. Reference numeral 26 denotes a spring, which is provided at the other end of each holding lever 23 and biases the one end in the closing direction. Reference numeral 27 denotes a roller rotatably supported at the other end of each holding lever 23, and reference numeral 28 denotes a wedge-shaped advance / retreat member.

Next, the operation will be described. In the normal state, the wedge-shaped advance / retreat member 28 is inserted between the rollers 27, and the respective holding levers 23 are opened in the direction of the arrow d. Next, the neck portion of the cathode ray tube is inserted into the V-shaped engagement recess 25, and the wedge-shaped advance / retreat member 28 is retracted. Then, the neck portion of the cathode ray tube is clamped by the engagement recess 25 of each clamping lever 23 by the tension of the spring 26.

[0004]

By the way, in the production of cathode ray tubes at present, mixed production of multiple types of tubes is mainly used. Therefore,
The neck holding device is required to correspond to various pipe types, but in the conventional neck holding device as described above, the holding lever 23 pivots as shown by the arrow d, so that when the holding position is set, In a cathode ray tube having a different neck portion thickness, there is a problem that the center axis of the cathode ray tube is shifted outward when the thickness is large, and shifted inward when the thickness is small.

Further, in order to correct the above-mentioned center axis deviation, it is necessary to adjust the position of the shaft 24 which rotatably connects the holding lever 23, and for this purpose, the entire neck holding device is connected to a cathode ray. It must be removed from the tube sealing device. However, since the neck holding device is large and heavy, and is attached with bolts or the like, this adjustment operation is extremely troublesome, and requires much labor and time. Therefore, there is a problem that it is not easy to change the production pipe type or change the pipe type ratio.

Further, when the clamping position of the neck portion of the cathode ray tube is to be adjusted, it is necessary to remove the entire neck clamping device as described above, and there has been a problem that the adjustment operation is extremely troublesome.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the present invention is applied to a cathode ray tube having a different neck portion, that is, a cylindrical glass member having a different diameter. An object of the present invention is to obtain a holding device for a cylindrical glass member capable of keeping the position of a shaft constant. It is another object of the present invention to provide a holding device for a cylindrical glass member which can easily adjust the position of the central axis when positioning the cylindrical glass member. It is another object of the present invention to obtain a holding device for a cylindrical glass member having high positioning accuracy of the cylindrical glass member.

[0008]

According to the present invention, there is provided a holding device for a cylindrical glass member according to the present invention, comprising: a holding member support having one engaging member having an engaging portion with which a held cylindrical glass member is engaged; A guide mechanism fixed to the base and supporting the holding member support so as to be movable in a straight line, and a movement fixed to the base and held by the holding member support to prevent movement and adjust the contact position. A stopper,
A holding lever rotatably supported by the base, a holding lever rotatably supported by the base, a shaft supported by the holding member support and the holding lever, and connecting the two; A coupling member for restricting the rotation range from a clamping position for clamping the cylindrical glass member to an open position on the contrary, and when the clamping lever is in the clamping position, the other clamping member is pressed against the clamped cylindrical glass member. A holding force generating mechanism for generating a force; and a biasing mechanism for generating a force for holding the holding lever in a holding position or an open position while bringing the holding member support into contact with a stopper.

The biasing mechanism is a spring interposed between the base and the holding member support.

Further, a driving mechanism for causing the holding member support to abut against the stopper, generating a force for holding the holding lever in the holding position or the opening position, and further driving the holding lever between the holding position and the opening position is provided. It is provided.

The drive mechanism is a cylinder having a main body fixed to a base and a piston connected to a holding member support.

The engaging portion of one of the holding members is formed in a V-shape.

Further, the guide mechanism comprises a plurality of guide rods fixed to the base.

Further, the pinching force generating mechanism is a spring interposed between the other pinching member and the tip of the pinching lever.

The adjustment of the contact position of the stopper is performed by fitting a spacer to the stopper itself.

Furthermore, the adjustment of the contact position of the stopper
This is performed by moving the stopper itself using an adjusting member and a screw fixed to the base.

The holding member support supports one of the holding members so as to be movable in the lateral direction, and has a mechanism for adjusting the moving position.

Further, the moving position adjusting mechanism comprises a screw screwed into a screw hole of one of the holding members and an adjusting member fixed to the holding member support and rotatably supporting the screw. is there.

Further, a stop shaft for suppressing the rotation of the holding lever on the open side is fixed to the base.

Still further, the one holding member and the other holding member are formed of a resin material.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 is a plan view showing a first embodiment of the present invention, FIG. 2 is a plan view showing a state where a neck portion of a cathode ray tube is sandwiched in the first embodiment, and FIG. 3 is a perspective view showing the first embodiment. . In the drawing, 1 is a base, 2 is a guide shaft support member fixed to the base 1, and 3 is a guide shaft support member 2.
A guide shaft 4 attached to the guide shaft 3; a holding member support body attached to the guide shaft 3 so as to be freely movable in the direction of arrow a;
Reference numeral 5 denotes a spring for urging the holding member support 4 in the a1 direction, and is interposed between the guide shaft support member 2 fixed to the base 1 and the holding member support 4. In the first embodiment, the guide shaft 3 is fitted on the outer periphery. Reference numeral 6 denotes one holding member attached to the holding member support member 4, and 7 denotes a V-shaped engagement recess formed at one end of the one holding member 6, which is a portion where the neck portion of the cathode ray tube engages. is there. 8 is a connecting member, 9
Is a holding lever connected to the holding member support 4 by the connecting member 8, 10 is a spring attached to the holding lever 9, 11 is the other holding member supported by the spring 10, 12 is the holding lever 9 which is turned on the base 1. Shaft movably mounted, 13 is handle, 1
Reference numeral 4 denotes a stopper, which is fixed to the base 1 and is prevented from moving when the holding member support 4 comes into contact with it.

The connecting member 8 is pivotally supported by the holding member support 4 and the holding lever 9 to connect them, and the rotation range of the holding lever 9 is changed from the holding position for holding the cylindrical glass member to the opening position opposite thereto. Restrict by. The holding position and the opening position are determined by the length L1 between the fulcrums AB of the connecting member 8 and the length L2 between the center C of the shaft 12 and the fulcrum B. 1 shows the open position, and FIG. 2 shows the holding position. When the holding lever 9 is in the holding position, the cathode ray tube neck 1
5 is generated by the spring 10. Further, the spring 5 generates a force for holding the holding member support 4 against the stopper 14 and holding the holding lever 9 at the holding position or the open position. Note that the force of the spring 5 is
Set much stronger than the power of

In the thus configured neck holding device for a cathode ray tube sealing device, the movement of the holding member support 4 is a linear movement only in the direction of arrow a by sliding the guide shaft 3. The one holding member 6 attached to the holding member support 4 does not move in the direction of arrow b. Therefore, as shown in FIG. 2, when the cathode ray tube neck 15 is to be pinched and positioned, the handle 13 of the pinching lever 9 at the open position shown in FIG. 1 is rotated in the direction of arrow c1.
Then, until the A, B, and C line up in a straight line, the holding member support 4
After retreating against the urging force of the spring 5, the point B moves to the opposite side (see FIG. 2), and the holding member support 4 is urged again by the spring 5 in the direction a <b> 1 and stops against the stopper 14. The neck portion 15 is sandwiched between the one holding member 6 and the other holding member 11, and the other holding member 11 is pressed and held by the spring 10. At this time, the position of the pinching position of the neck portion is determined in the direction b by the engagement of the neck portion 15 with the V-shaped engaging recess 7, and the pinching member support 4 comes into contact with the stopper 14. Determines the position in the a direction.

Further, by providing a plurality of guide shafts 3, rotation of the holding member support 4 is suppressed. Therefore, the rotation of one of the holding members 6 as indicated by an arrow d in FIG. 3 can be suppressed, and the holding and positioning can be performed accurately.

Next, the case where the neck portions of the cathode ray tubes having different thicknesses are sandwiched and positioned will be described. FIG. 4 is a plan view showing a state in which neck portions of cathode ray tubes having different thicknesses are pinched and positioned in the first embodiment, and FIG. 5 is a side view of FIG. In the first embodiment, as shown in FIGS. 1 and 4, the one holding member 6 does not move in the direction of the arrow b due to the guide shaft 3. Therefore, as shown in FIGS. 4 and 5, by inserting the spacer 17 into the stopper 14 from above, the position of the holding member support 4 is shifted rearward, so that the neck portions 16 having different thicknesses are different from the neck portion 15. Pinching and positioning can be performed accurately on the same central axis.

Embodiment 2 FIG. In the first embodiment, a spring 5 is used as a mechanism for urging the holding member support 4 in the direction of arrow a1.
However, Embodiment 2 uses an air cylinder. FIG. 6 is a plan view showing Embodiment 2 of the present invention, in which 18 is an air cylinder, whose main body is fixed to the base 1, and whose piston is connected to the holding member support 4.
The air cylinder 18 generates a force for bringing the holding member support 4 into contact with the stopper 14 and holding the holding lever 9 in the holding position or the open position. At the same time, by driving the holding member support 4, the holding is performed. The lever 9 is rotated between the holding position and the open position. Therefore, the handle 13 is unnecessary for the holding lever 9. Note that the stroke of the air cylinder 18 needs to be adjusted so that when the holding lever 9 is rotated in the direction c2 from the state shown in FIG. 6, the point B stops before coming to a point on a straight line connecting A and C. . In the second embodiment, this position is the open position. Also, the air cylinder 18 can be implemented in a similar manner even if it is another cylinder such as a hydraulic cylinder.

Embodiment 3 FIG. 7 is a plan view showing a third embodiment of the present invention, and FIG. 8 is an enlarged view of the screw portion of FIG. By providing the adjusting screws 20a and 20b on the stopper 14a and the one holding member 6a, the adjustment of the holding position of the cathode ray tube neck 15 is extremely facilitated. 7 and 8, reference numeral 6a denotes one holding member supported movably in the direction b with respect to the holding member support 4. In addition, although the mechanism which supports so that movement is not shown,
This can be achieved by using a normal mechanism. Reference numeral 22a denotes an adjusting member attached to the holding member support 4. 20a is the adjusting member 2
This is an adjustment screw rotatably attached to 2a using an E-ring 21. Since the one holding member 6a has a screw hole, by rotating the adjustment screw 20a,
One holding member 6a moves in the direction b. That is, by rotating the adjustment screw 20a, the one holding member 6a
Can be easily adjusted in the lateral direction. Therefore, when it is desired to adjust the position of the center axis of the neck portion to be held in the lateral direction, the adjustment becomes easy. Note that the b direction orthogonal to the a direction is referred to as a lateral direction. The direction a is referred to as the front-back direction.

Reference numeral 22b denotes an adjusting member attached to the base 1. Reference numeral 20b denotes an adjusting screw screwed into a screw hole of the adjusting member 22b. A stopper 14a is supported on the base 1 so as to be movable in the front-rear direction. In this configuration, since the stopper 14a is pressed by the holding member support 4, the position of the stopper 14a can be easily adjusted by rotating the adjusting screw 20b. Therefore, when the diameter of the neck portion to be clamped is changed, it is easy to adjust the position of the central axis so as not to change. Note that a screw hole may be provided in the stopper 14b and the E-ring may be used in the adjustment member 22b. Further, when it is desired to change the holding position of the neck portion, the position of the center axis can be changed very easily by adjusting both the adjusting screws 20a and 20b.

Embodiment 4 FIG. 9 is a plan view showing Embodiment 4 of the present invention. In the fourth embodiment, the stop shaft 19 is fixed to the base 1 to suppress the rotation of the holding lever 9 when opening the neck portion of the held cathode ray tube, that is, the rotation on the opening side is suppressed. Next, the position where the stop shaft 19 is fixed will be described. When the holding lever 9 is rotated from the holding position, the stop shaft 19 moves from the position where A, B, and C are arranged in a straight line (the maximum retracted position in terms of the movement of the holding member support 4) to the arrow c2 side. Until the rotation is completed (until the holding member support 4 comes into contact with the stopper 14), the holding lever 9 is fixed so as to stop the rotation. According to the fourth embodiment,
When the neck portion is pinched and positioned, the rotation range of the pinching lever 9, that is, the handle 13 can be narrowed.

Embodiment 5 In the fifth embodiment, one holding member 6 and the other holding member 11 are formed using a resin material. According to the fifth embodiment,
It is possible to prevent the cathode ray tube neck from being damaged due to scratches or the like.

In each of the embodiments described above, the holding device for the cathode ray tube neck portion has been described. However, the present invention is not limited to the cathode ray tube neck portion, but can be applied to other holding devices for cylindrical glass members to obtain the same effects.

[0032]

As described above, the present invention provides a holding member support having one holding member having an engagement portion with which a held cylindrical glass member is engaged, and a holding member fixed to a base and supporting the holding member. A guide mechanism for movably supporting the body in a straight line, a stopper fixed to the base, the movement of which is prevented by the contact of the holding member support and the contact position thereof can be adjusted, and a held cylindrical glass member A holding lever rotatably supported by the base, a holding lever rotatably supported by the base, and a supporting member and the holding lever pivotally connected to connect the two, and the rotation range of the holding lever is cylindrical. A coupling member that restricts the glass member from a clamping position to an opening position on the contrary, and a clamping force that generates a force for pressing the other clamping member against the clamped cylindrical glass member when the clamping lever is at the clamping position. Generation mechanism An urging mechanism that generates a force for holding the holding member support to the stopper and for holding the holding lever in the holding position or the open position is provided.Also, the holding member support is brought into contact with the stopper and the holding lever is used. A driving mechanism that generates a force for holding the holding position or the opening position and further drives a holding lever between the holding position and the opening position is provided. The shaft positions can be easily matched,
In addition, positioning can be performed with high accuracy.

The adjustment of the contact position of the stopper is performed by moving the stopper itself by using an adjusting member fixed to the base and a screw, and the holding member support member is provided with one of the holding members. While supporting movably in the lateral direction, it has an adjustment mechanism for its movement position, and further, the adjustment mechanism for the movement position is fixed to a screw screwed into a screw hole of one of the holding members and to the holding member support side. Since it is composed of an adjusting member that rotatably supports the screw, it is possible to easily adjust the sandwiching positioning position of the cylindrical glass member, and it is possible to accurately perform the positioning.

Further, since the guide mechanism for moving the holding member support in a straight line is constituted by a plurality of guide rods fixed to the base, the holding member having an engagement portion with the held member is provided. Can be suppressed, and the positioning accuracy is improved.

Further, since the stop shaft for suppressing the rotation of the holding lever on the open side is fixed to the base, the rotation range of the holding lever is narrowed, and the work of holding and positioning becomes easy.

Further, since the one holding member and the other holding member are formed of a resin material, it is possible to prevent the held cylindrical glass member from being damaged or damaged.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of the present invention.

FIG. 2 is a plan view showing a state where a neck portion of the cathode ray tube is held in the first embodiment.

FIG. 3 is a perspective view showing the first embodiment.

FIG. 4 is a plan view showing a state in which neck portions of cathode ray tubes having different thicknesses are sandwiched and positioned in the first embodiment.

FIG. 5 is a side view of FIG. 4;

FIG. 6 is a plan view showing Embodiment 2 of the present invention.

FIG. 7 is a plan view showing a third embodiment of the present invention.

FIG. 8 is an enlarged view of a screw portion of FIG. 7;

FIG. 9 is a plan view showing a fourth embodiment of the present invention.

FIG. 10 is a perspective view showing a conventional neck clamping device for a cathode ray tube sealing device.

[Explanation of symbols]

1 base, 2 guide shaft support members, 3 guide shafts, 4
Clamping member support, 5 spring, 6, 6a one clamping member, 7 V-shaped engaging recess, 8 connecting member, 9 clamping lever,
Reference Signs List 10 spring, 11 the other holding member, 12 shaft, 13
Handle, 14, 14a Stopper, 15 Cathode ray tube neck, 16 Neck with different thickness, 17 Spacer, 18 Air cylinder, 19 Stop shaft, 20a,
20b adjusting screw, 22a, 22b adjusting member.

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[Procedure amendment]

[Submission date] June 16, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

Further, a driving mechanism for causing the holding member support to abut against the stopper, generating a force for holding the holding lever in the holding position or the opening position, and further driving the holding lever between the holding position and the opening position is provided. This is provided in place of the urging mechanism .

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

The connecting member 8 is pivotally supported by the holding member support 4 and the holding lever 9 to connect them, and the rotation range of the holding lever 9 is changed from the holding position for holding the cylindrical glass member to the opening position opposite thereto. Restrict by. The holding position and the opening position are determined by the length L1 between the fulcrums AB of the connecting member 8 and the length L2 between the center C of the shaft 12 and the fulcrums B. 1 shows the open position, and FIG. 2 shows the holding position. When the holding lever 9 is in the holding position, the cathode ray tube neck 1
5 is generated by the spring 10. Further, the spring 5 generates a force for holding the holding member support 4 against the stopper 14 and holding the holding lever 9 at the holding position or the open position. Note that the force of the spring 5 is
Set much stronger than the power of

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0027

[Correction method] Change

[Correction contents]

Embodiment 3 FIG. 7 is a plan view showing a third embodiment of the present invention, and FIG. 8 is an enlarged view of the screw portion of FIG. By providing adjusting screws 20a and 20b on one of the holding member 6a and the stopper 14a , the adjustment of the holding position of the cathode ray tube neck 15 is extremely facilitated. 7 and 8, reference numeral 6a denotes one holding member supported movably in the direction b with respect to the holding member support 4. In addition, although the mechanism which supports so that movement is not shown,
This can be achieved by using a normal mechanism. Reference numeral 22a denotes an adjusting member attached to the holding member support 4. 20a is the adjusting member 2
This is an adjustment screw rotatably attached to 2a using an E-ring 21. Since the one holding member 6a has a screw hole, by rotating the adjustment screw 20a,
One holding member 6a moves in the direction b. That is, by rotating the adjustment screw 20a, the one holding member 6a
Can be easily adjusted in the lateral direction. Therefore, when it is desired to adjust the position of the center axis of the neck portion to be held in the lateral direction, the adjustment becomes easy. Note that the b direction orthogonal to the a direction is referred to as a lateral direction. The direction a is referred to as the front-back direction.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction contents]

Reference numeral 22b denotes an adjusting member attached to the base 1. Reference numeral 20b denotes an adjusting screw screwed into a screw hole of the adjusting member 22b. A stopper 14a is supported on the base 1 so as to be movable in the front-rear direction. In this configuration, since the stopper 14a is pressed by the holding member support 4, the position of the stopper 14a can be easily adjusted by rotating the adjusting screw 20b. Therefore, when the diameter of the neck portion to be clamped is changed, it is easy to adjust the position of the central axis so as not to change. Note that the screw hole is provided toward the stopper 14 a, toward the adjusting member 22b may be a structure using the E-ring. Further, when it is desired to change the holding position of the neck portion, the position of the center axis can be changed very easily by adjusting both the adjusting screws 20a and 20b.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0032

[Correction method] Change

[Correction contents]

[0032]

As described above, the present invention provides a holding member support having one holding member having an engagement portion with which a held cylindrical glass member is engaged, and a holding member fixed to a base and supporting the holding member. A guide mechanism for movably supporting the body in a straight line, a stopper fixed to the base, the movement of which is prevented by the contact of the holding member support and the contact position thereof can be adjusted, and a held cylindrical glass member A holding lever rotatably supported by the base, a holding lever rotatably supported by the base, and a supporting member and the holding lever pivotally connected to connect the two, and the rotation range of the holding lever is cylindrical. A coupling member that restricts the glass member from a clamping position to an opening position on the contrary, and a clamping force that generates a force for pressing the other clamping member against the clamped cylindrical glass member when the clamping lever is at the clamping position. Generation mechanism For example, further biasing Organization for generating a force for holding the clamping lever in clamping position or the open position is brought into contact with the clamping member support the stopper, or the clamping member support the holding lever is brought into contact with the stopper A driving mechanism that generates a force for holding the holding position or the opening position and further drives a holding lever between the holding position and the opening position is provided. The shaft positions can be easily matched,
In addition, positioning can be performed with high accuracy.

[Procedure amendment 6]

[Document name to be amended] Drawing

[Correction target item name] Fig. 7

[Correction method] Change

[Correction contents]

FIG. 7

Claims (13)

[Claims] 1. A holding member support to which one holding member having an engagement portion with which a held cylindrical glass member is engaged is attached, and the holding member support is fixed to a base, and the holding member support can be moved in a straight line. A guide mechanism fixed to the base, a stopper capable of adjusting the contact position while the movement of the holding member support body is prevented by the contact of the holding member support body, and the other contacting the held cylindrical glass member A holding lever rotatably supported by the base; and a supporting member and the holding lever pivotally connected to each other to connect the two, and the rotation range of the holding lever is cylindrical glass. A coupling member for restricting the member from a clamping position to a release position opposite thereto, and a force for pressing the other clamping member against the clamped cylindrical glass member when the clamping lever is at the clamping position. Do A cylindrical structure comprising: a holding force generating mechanism; and a biasing mechanism for generating a force for holding the holding lever at the holding position or the open position while bringing the holding member support into contact with the stopper. A device for holding glass members. 2. The holding device for a cylindrical glass member according to claim 1, wherein the urging mechanism is a spring interposed between the base and the holding member support. 3. A holding member support to which one holding member having an engaging portion with which the held cylindrical glass member is engaged is attached, and the holding member support is fixed to a base, and the holding member support can be moved in a straight line. A guide mechanism fixed to the base, a stopper capable of adjusting the contact position while the movement of the holding member support body is prevented by the contact of the holding member support body, and the other contacting the held cylindrical glass member A holding lever rotatably supported by the base; and a supporting member and the holding lever pivotally connected to each other to connect the two, and the rotation range of the holding lever is cylindrical glass. A coupling member for restricting the member from a clamping position to a release position opposite thereto, and a force for pressing the other clamping member against the clamped cylindrical glass member when the clamping lever is at the clamping position. Do A holding force generating mechanism, generating a force for holding the holding member at the holding position or the open position while bringing the holding member support into contact with the stopper, and further generating the holding lever between the holding position and the opening position. A holding mechanism for driving the cylindrical glass member. 4. The holding device for a cylindrical glass member according to claim 3, wherein the driving mechanism is a cylinder having a main body fixed to the base and a piston connected to the holding member support. 5. The holding device for a cylindrical glass member according to claim 1, wherein the engaging portion of the one holding member is formed in a V-shape. 6. The guide mechanism according to claim 1, wherein the guide mechanism comprises a plurality of guide rods fixed to the base.
The holding device for a cylindrical glass member according to any one of the above. 7. The cylinder according to claim 1, wherein the holding force generating mechanism is a spring interposed between the other holding member and a tip of a holding lever. For holding glass-like members. 8. The holding device for a cylindrical glass member according to claim 1, wherein the adjustment of the contact position of the stopper is performed by fitting a spacer to the stopper itself. 9. The method according to claim 1, wherein the adjustment of the contact position of the stopper is performed by moving the stopper itself using an adjustment member fixed to the base and a screw. A holding device for a cylindrical glass member as described in the above. 10. The holding member supporter supports one of the holding members movably in a lateral direction, and has a mechanism for adjusting the moving position thereof. The holding device for a cylindrical glass member according to any one of the preceding claims. 11. The moving position adjusting mechanism includes a screw screwed into a screw hole of one of the holding members, and an adjusting member fixed to the holding member support side and rotatably supporting the screw. The holding device for a cylindrical glass member according to claim 10, characterized in that: 12. The device according to claim 1, wherein a stop shaft for suppressing rotation of the holding lever on the open side is fixed to the base. Of a cylindrical glass member. 13. The holding device for a cylindrical glass member according to claim 1, wherein one of the holding members and the other holding member are formed of a resin material.