JPH11333645A - Automatic gasket insertion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To press insert a gasket into a groove without causing bending by rotating a pressurizing roller at a higher peripheral speed than a travel speed of the pressurizing roller. SOLUTION: A pressurizing roller 14 comes into pressure-contact with a gasket 12, and an insertion part 12a of the gasket 12 is pressed and inserted into a groove 11. Next, an insertion head 16 is moved in the direction of an arrow mark A, and the pressurizing roller 14 is rotated at a higher peripheral speed than a travel speed of the insertion head in the direction of rolling. Consequently, a friction force is generated on a contact face of the pressurizing roller 14 and the gasket 12, and the gasket 12 is pressed and inserted while it is pulled into the groove 11 due to this friction force. By repeating this operation along the longitudinal direction of the gasket 12, the gasket 12 is inserted over the whole length of the groove 11. Consequently, it is possible to prevent bending caused when the gasket 12 is pressed and inserted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gasket automatic insertion device for press-fitting a gasket into a groove formed in an outer peripheral portion of a sealing surface of a device such as a refrigerator.

[0002]

2. Description of the Related Art FIG.
FIG. 11 is a perspective view showing the configuration of a conventional gasket automatic insertion device disclosed in Japanese Patent Publication No. 1-No. 1 and FIG. 11 is a line XI-XI in FIG.
FIG. 12 is a sectional view taken along the line XII-X in FIG.
It is sectional drawing which followed II. In the drawing, reference numeral 1 denotes a door having a sealing surface of a device such as a refrigerator, etc., 2 denotes a groove provided on the outer peripheral portion of the sealing surface of the door 1, and 3 denotes a groove having an insertion portion 3 a inserted into the groove 2. The gasket 4 is positioned along the insertion portion 3a, 4 is a plurality of rod-shaped pressing blocks arranged on the gasket 3, and 5 is a holding frame that holds the upper part of each pressing block 4 so as to be able to move up and down. , 6 are arms protruding horizontally from the intermediate portion of each pressing block 4, 7
Is a compression coil spring disposed between the arm 6 and the holding frame 5 to urge the pressing block 4 downward, 8 is a moving arm that moves horizontally in the direction of arrow A along the longitudinal direction of the holding frame 5, Reference numeral 9 denotes a pressing block 4 rotatably held at the lower end of the moving arm 8.
Is a pressure roller that presses the upper surface of the roller.

Next, the operation will be described. Due to the movement of the moving arm 8, the pressure roller 9 rolls along the upper surface, which is the other end of each pressing block 4, and presses each pressing block 4 downward by the dimension d, respectively, to the state shown in FIG. 11 to FIG. I do. Thereby, the insertion portion 3a of the gasket 3 is pressed into the groove 2 of the door 1.

[0004]

The conventional gasket automatic insertion device is configured as described above, and by preventing the gasket 3 from bending in the longitudinal direction, the insertion portion 3a is displaced in the groove 2. Since the press-fitting can be performed without the pressure, the pressing block 4, the holding frame 5, and the like are required, and there is a problem that the configuration is complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a gasket automatic insertion device which has a simple structure and can be press-fitted without causing bending. I do.

[0006]

According to a first aspect of the present invention, there is provided an automatic gasket insertion apparatus, wherein a gasket is formed by moving a pressure roller along a groove provided on an outer peripheral portion of a sealing surface of a device. In the automatic gasket insertion device for inserting the pressure roller into the pressure roller, the pressure roller is rotated at a peripheral speed higher than the moving speed of the pressure roller.

According to a second aspect of the present invention, there is provided an automatic gasket inserting apparatus according to the first aspect, wherein an outer peripheral portion of the pressure roller is formed of a rubber member.

According to a third aspect of the present invention, there is provided a gasket automatic insertion device, wherein a gasket is pressed into a groove by moving a pressure roller along a groove provided on an outer peripheral portion of a sealing surface of the device. In the gasket automatic insertion device described above, a second pressure roller for pressing the gasket with a pressing amount smaller than the pressing amount of the pressing roller is provided in front of the moving direction of the pressing roller.

According to a fourth aspect of the present invention, there is provided an automatic gasket insertion device according to the third aspect, wherein the second pressure roller is supported by a relief mechanism which can expand and contract in the gasket pressing direction.

According to a fifth aspect of the present invention, in the gasket automatic insertion device, the second pressure roller is formed to be smaller than the diameter of the pressure roller.

The automatic gasket insertion device according to claim 6 of the present invention is characterized in that
Is rotated at a peripheral speed higher than the moving speed of the pressure roller.

According to a seventh aspect of the present invention, in the gasket automatic insertion device according to the sixth aspect, the pressure roller is provided with a pulley, and the second pressure roller is provided with a second pulley having a smaller diameter than the pulley. Each of the two pulleys attached is connected by a belt.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a conceptual diagram showing the configuration of an automatic gasket insertion device according to Embodiment 1 of the present invention, and FIG. 2 is a side sectional view taken along line II-II in FIG. In the drawing, reference numeral 10 denotes a door having a sealing surface of a device such as a refrigerator, 11 denotes a groove provided on an outer peripheral portion of the sealing surface of the door 10, and 12 denotes an insertion portion 12a inserted into the groove 11.
The gasket 13 is positioned so that the insertion portion 12a is aligned with the groove 11, the housing 13 is suspended by a press-fitting force generator (not shown) composed of a cylinder or the like, and the housing 14 is rotatable by the housing 13. A pressure roller 15 which is supported and whose outer periphery is pressed against the gasket 12 is a motor connected to the pressure roller 14 and fixed to the housing 13 to rotate the pressure roller.
The insertion head 16 is disposed so as to be movable at a predetermined speed along the longitudinal direction of the gasket 12 by an insertion head traveling device (not shown).

Next, the operation will be described. First, the insertion head 16 is pressed with a predetermined pressing force. Then, the pressure roller 14 is pressed against the gasket 12, and the insertion portion 12 a of the gasket 12 is pressed into the groove 11. Next, at the same time as the insertion head 16 is moved in the direction of arrow A, the pressing roller 14 is rotated by the motor 15 in the rolling direction at a peripheral speed higher than the moving speed of the insertion head 16. As a result, a frictional force is generated at the contact surface between the pressure roller 14 and the gasket 12, and the gasket 12 is pressed into the groove 11 while being drawn into the groove 11 by the frictional force. Hereinafter, this operation is referred to as gasket 1
By repeating along the longitudinal direction of No. 2, the gasket 12 is inserted over the entire length in the groove 11.

As described above, according to the first embodiment, since the pressing roller 14 is rotated at a peripheral speed higher than the moving speed of the pressing roller 14, the gasket 12 is
The gasket 12 can be prevented from bending when the gasket 12 is pressed with a simple structure.

Embodiment 2 FIG. 3 is a side view showing a configuration of an automatic gasket insertion device according to Embodiment 2 of the present invention. In the figure, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 17 denotes a pressure roller in which an annular member formed of a rubber member such as urethane rubber is fitted on the outer peripheral portion and is in contact with the gasket 12, and is connected to the motor 15 and rotatably supported by the housing 14.

As described above, according to the second embodiment, since the annular member 18 formed of a rubber member is fitted to the outer peripheral portion of the pressure roller 17, the pressure roller 17 and the gasket 1
The frictional force generated at the contact surface of the gasket 2 increases, and the gasket 1
2 is further increased into the groove 11 and the gasket 12
Bending that occurs at the time of press-fitting can be further prevented.

Embodiment 3 4 is a conceptual diagram showing a configuration of an automatic gasket insertion device according to Embodiment 3 of the present invention, FIG. 5 is a cross-sectional view taken along line VV in FIG. 4, and FIG.
FIG. 6 is a sectional view taken along line VI-VI in FIG. 4. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 19 denotes a housing suspended by a press-fitting force generator (not shown) composed of a cylinder or the like, reference numeral 20 denotes a pressure roller which is rotatably supported by the housing 19 and has an outer periphery in pressure contact with the gasket 12, and reference numeral 21 denotes a pressure roller 20 A second pressure roller 23 rotatably supported by a support frame 22 in the front of the direction in which the gasket 12 is inserted and moved, and having an outer periphery pressed against the gasket 12, is interposed between the support frame 22 and the housing 19. 2 pressure rollers 2
The insertion head 24 is constituted by a spring as a relief mechanism for movably supporting the gasket 1 in the gasket insertion direction of the gasket 12, and the insertion head 24 is constituted by these 19 to 23. The insertion head 24 is moved by the insertion head traveling device (not shown). Is configured to be movable at a predetermined speed along the longitudinal direction.

Next, the operation will be described. First, the insertion head 24 is pressed by a predetermined pressing amount. Then, the pressure roller 20 comes into pressure contact with the gasket 12, and the insertion portion 12a of the gasket 12 is pressed into the groove 11 to be in the state shown in FIG. With this operation, the second pressure roller 21 is pressed into contact with the gasket 12 with a pressing amount smaller than the pressing amount of the pressure roller 20 via the spring 23, and the insertion portion 12a of the gasket 12 is pressed.
Is temporarily inserted into the groove 11 to be in the state of FIG. In this state, when the insertion head 24 starts to move in the direction of arrow A, the gasket 12 is first pressed by the second pressing roller 21 which rolls by the niggling mechanism with a pressing amount smaller than the pressing amount of the pressing roller 20. After being temporarily inserted at the position of the second pressure roller 21, it is fully inserted in the state shown in FIG.

As described above, according to the third embodiment,
A state in which the gasket 12 is temporarily inserted because the second pressing roller 21 is pressed by a pressing amount smaller than the pressing amount of the pressing roller 20 and temporarily inserted, and then fully inserted by the pressing roller 20. Since the pushing amount is relatively small, the force generated in the rolling movement direction of the gasket 12 is suppressed, and bending is prevented. In addition, since the insertion portion 12a of the temporarily inserted gasket 12 is deformed at the time of full insertion, a frictional force is generated between the groove 11 and the gasket 12, and the gasket 12 is prevented from shifting in the rolling direction due to the frictional force. It is inserted under normal condition.

In the third embodiment, the second pressure roller 21 and the second pressure roller 20 are supported by the housing 19. However, the second pressure roller 21 and the second pressure roller 20 may be supported by different housings. The effect of is obtained. The same effect can be obtained by using an air cylinder having a press-fitting force smaller than that of the press-fitting force generating device.

Embodiment 4 FIG. 7 is a conceptual diagram showing a configuration of a gasket automatic insertion device according to Embodiment 4 of the present invention. In the figure, the same parts as in the third embodiment are denoted by the same reference numerals, and the description thereof is omitted. Reference numeral 25 denotes a housing suspended by a press-fitting force generator (not shown) composed of a cylinder or the like; 26, a pressure roller which is rotatably supported by the housing 25 and whose outer periphery is in pressure contact with the gasket 12; A second pressure roller having a small diameter and located at a position in front of the pressure roller 26 in the longitudinal direction of the gasket 12 and rotatably supported by the housing 25 with the same axial center at the same height and having an outer periphery in pressure contact with the gasket 12. The insertion head 28 is constituted by these 25 to 27, and the insertion head 28 is configured to be movable at a predetermined speed along the longitudinal direction of the gasket 12 by an insertion head traveling device (not shown).

Next, the operation will be described. First, the insertion head 28 is pressed by a predetermined pressing amount. Then, the pressure roller 26 comes into pressure contact with the gasket 12, and the insertion portion 12 a of the gasket 12 is pressed into the groove 11 to be in the state of FIG. 6. With this operation, the second pressing roller 27 is pressed against the gasket 12 with a pressing amount smaller than the pressing amount of the pressing roller 26 by a difference in diameter, and the insertion portion 12a of the gasket 12 is
5 is temporarily inserted into the position 1 shown in FIG. In this state, when the insertion head 28 starts moving in the direction of arrow A, the gasket 1
First, the roller 2 is pressed by the rolling second pressing roller 27 with a pressing amount smaller than the pressing amount of the pressing roller 26, and is temporarily inserted at the position of the second pressing roller 27, and then the roller 2 is rolled. The moving pressure roller 26 is fully inserted into the state shown in FIG.

As described above, according to the fourth embodiment,
The gasket 12 is temporarily inserted because the second pressurizing roller 27 presses with a pressing amount smaller than the pressing amount of the pressurizing roller 26 and temporarily inserts it, and then the pressurizing roller 26 fully inserts. Since the pushing amount is relatively small, the force generated in the rolling movement direction of the gasket 12 is suppressed, and bending is prevented. In addition, since the insertion portion 12a of the temporarily inserted gasket 12 is deformed at the time of full insertion, a frictional force is generated between the groove 11 and the gasket 12, and the gasket 12 is prevented from shifting in the rolling direction due to the frictional force. It is inserted under normal condition.

In the fourth embodiment, as means for reducing the pushing amount of the second pressing roller 27, the pressing roller 26
Although the diameter is made smaller, the height of each rotation axis is changed with the same diameter. Further, the same effect can be obtained even if the pushing amount of the second pressure roller is reduced by inclining the insertion head or the like.

Embodiment 5 FIG. 8 is a conceptual diagram showing a configuration of a gasket automatic insertion device according to Embodiment 5 of the present invention. In the figure, the same parts as those in the fourth embodiment are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 29 denotes a motor fixed to the housing 25 and rotating the second pressure roller 27 at a peripheral speed higher than the moving speed of the pressure roller 26.

As described above, according to the fifth embodiment described above, the second leading portion with a pushing amount smaller than the pushing amount of the pressure roller 26 is used.
Is rotated at a peripheral speed higher than the moving speed of the pressing roller 26, so that in addition to the effect of the fourth embodiment, a force for drawing the gasket 12 into the groove 12 acts and the gasket 12 Can be prevented from occurring.

Embodiment 6 FIG. FIG. 9 is a conceptual diagram showing a configuration of a gasket automatic insertion device according to Embodiment 6 of the present invention. In the figure, the same parts as those in the fourth embodiment are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 30 denotes a pulley fixed to the rotating shaft of the pressing roller 26, and 31 denotes a pulley fixed to the rotating shaft of the second pressing roller 27.
A second pulley 32 having a diameter larger than the diameter of the pulley 30 than the diameter of the pulleys 30 and 31 is a belt connecting between the pulleys 30 and 31.

As described above, according to the sixth embodiment, the pressure roller 26 is provided with the pulley 30, and the second pressure roller 27 is provided with the diameter of the pulley 30 based on the ratio of the diameter of the two pressure rollers 26, 27. By fixing the second pulley 31 having a large diameter and connecting the two pulleys 30 and 31 with the belt 32, the pressure roller 26 which applies a large pressing force when the gasket 12 is pressed in is driven. As a source, the rotation speed of the second pressure roller 27 is larger than the rotation speed of the pressure roller 26,
Is rotated at a peripheral speed higher than the moving speed of the pressing roller 26, so that the second pressing roller 2
7 can prevent the gasket 12 from bending.

[0030]

As described above, according to the first aspect of the present invention, the gasket is pressed into the groove by moving the pressure roller along the groove provided on the outer peripheral portion of the sealing surface of the device. In the automatic gasket insertion device, the pressure roller is rotated at a peripheral speed higher than the moving speed of the pressure roller, so that the force to draw the gasket into the groove acts and the pressure is reduced without bending with a simple structure. An automatic gasket insertion device that can be inserted can be provided.

According to a second aspect of the present invention, in the first aspect, since the outer peripheral portion of the pressure roller is formed of a rubber member, the occurrence of bending is further suppressed, and the gasket automatic insertion device capable of press-fitting. Can be provided.

According to the third aspect of the present invention, the gasket is automatically inserted into the groove by moving the pressure roller along the groove provided on the outer peripheral portion of the sealing surface of the device. In the apparatus, since the second pressure roller for pressing the gasket with a pressing amount smaller than the pressing amount of the pressing roller is provided in front of the moving direction of the pressing roller, the force generated in the moving direction is suppressed and the bending is generated. It is possible to provide a gasket automatic insertion device that can be press-inserted without causing the insertion.

According to a fourth aspect of the present invention, in the third aspect, since the second pressure roller is supported by an elastic member which can be extended and contracted in the gasket insertion direction, the second pressure roller is generated in the moving direction. It is possible to provide an automatic gasket insertion device capable of suppressing the force and enabling the press-fitting without causing the bending.

According to a fifth aspect of the present invention, in the third aspect, since the diameter of the second pressure roller is smaller than that of the pressure roller, the force generated in the moving direction can be suppressed. It is possible to provide a gasket automatic insertion device capable of press-fitting without causing bending.

According to a sixth aspect of the present invention, in the third to fifth aspects, the second pressure roller is rotated at a peripheral speed higher than the moving speed of the pressure roller.
It is possible to provide a gasket automatic insertion device that can be press-inserted without generating a bending due to a force for drawing the gasket into the groove.

According to a seventh aspect of the present invention, in the sixth aspect, a pulley is attached to the pressure roller, and a second pulley having a smaller diameter than the pulley is attached to the second pressure roller. Since the spaces are connected by the belt, a force for drawing the gasket into the groove acts to provide a gasket automatic insertion device capable of press-fitting without causing bending.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing a configuration of a gasket automatic insertion device according to a first embodiment of the present invention.

FIG. 2 is a side sectional view taken along line II-II in FIG.

FIG. 3 is a side sectional view showing a configuration of a gasket automatic insertion device according to a second embodiment of the present invention.

FIG. 4 is a conceptual diagram showing a configuration of a gasket automatic insertion device according to a third embodiment of the present invention.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

FIG. 6 is a sectional view taken along line VI-VI in FIG.

FIG. 7 is a conceptual diagram showing a configuration of a gasket automatic insertion device according to a fourth embodiment of the present invention.

FIG. 8 is a conceptual diagram showing a configuration of a gasket automatic insertion device according to a fifth embodiment of the present invention.

FIG. 9 is a conceptual diagram showing a configuration of a gasket automatic insertion device according to a sixth embodiment of the present invention.

FIG. 10 is a perspective view showing a configuration of a conventional automatic gasket insertion device.

FIG. 11 is a sectional view taken along line XI-XI in FIG. 10;

FIG. 12 is a sectional view taken along the line XII-XII in FIG.

[Explanation of symbols]

Reference Signs List 10 door (sealing surface of device), 11 groove, 12 gasket, 12a insertion part, 14 pressure roller, 15 motor, 16 insertion head, 17 pressure roller, 18 annular member (rubber member), 20 pressure roller, 21 Second pressure roller, 23 spring (needle mechanism), 24 insertion head, 26 pressure roller, 27 second pressure roller, 28
Insertion head, 29 motors, 30 pulleys, 31 second pulleys, 32 belts.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shoichiro Morikawa 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsui Electric Co., Ltd. (72) Inventor Kazuhiro Kato 2-3-2 Marunouchi, Chiyoda-ku, Tokyo 3 Rishi Electric Co., Ltd.

Claims (7)

[Claims] 1. A gasket automatic insertion device for press-fitting a gasket into a groove by moving a pressure roller along a groove provided on an outer peripheral portion of a sealing surface of a device. An automatic gasket insertion device characterized in that it is rotated at a peripheral speed higher than the moving speed of the pressure roller. 2. The automatic gasket insertion device according to claim 1, wherein an outer peripheral portion of the pressure roller is formed of a rubber member. 3. A gasket automatic insertion device for press-fitting a gasket into said groove by moving a pressure roller along a groove provided on an outer peripheral portion of a sealing surface of the device. An automatic gasket insertion device, further comprising a second pressing roller for pressing the gasket with a pressing amount smaller than the pressing amount of the pressing roller in the front of the direction. 4. The gasket automatic insertion device according to claim 3, wherein the second pressure roller is supported by a nigging mechanism that can expand and contract in a gasket pressing direction. 5. The gasket automatic insertion device according to claim 3, wherein the second pressure roller has a smaller diameter than the pressure roller. 6. The automatic gasket insertion device according to claim 3, wherein the second pressure roller is rotated at a peripheral speed higher than the moving speed of the pressure roller. 7. A pulley is attached to the pressure roller, and a second pulley having a smaller diameter than the pulley is attached to the second pressure roller, and the two pulleys are connected by a belt. 7. The automatic gasket insertion device according to 6.