JP2657036B2 - Gripping height adjustment device for article gripping machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gripping height adjusting device for an article gripping machine capable of uniformly gripping various types of articles having different heights.

[0002]

2. Description of the Related Art Articles, for example, containers for filling and packaging liquids, have various shapes depending on the properties and uses of the contents. Particularly, the height of the containers is as shown in FIG. , A variety of different products are provided on the market, and machines that process and process these different articles,
For example, cutting machines such as filling machines, cover machines, washing machines, containers, etc.
Due to the large size and high cost, in each processing and processing into containers of various shapes, it is common to use the above-mentioned one machine for general use corresponding to the various containers.

However, in the processing / processing machine described above,
As shown in FIG. 6, it is not possible to grip articles having different heights by using a kind of article gripping device, and therefore, by exchanging the gripping device or the attachment in the machine described above for each article. It has been given its versatility.

However, the replacement of the gripping device or the attachment described above must be performed after all related equipment such as a machine and an article transfer line has to be stopped, so that the work becomes large and the replacement time is also long. And the work efficiency is reduced.

In recent years, there has been an increase in the number of small lots of various kinds of processing and processing, and for this purpose, it is necessary to prepare different gripping devices or attachments in advance, which causes difficulties in managing these parts and their storage space. There was a point, and as a result, the cost of the product was increased. And other various problems.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and an elevating body for vertically moving the receiving table is mounted on a receiving table on which articles are placed by lifting means. A grip adjusting rod is provided which is detachably supported at an arbitrary position by a fixing means attached to the elevating body. Provided is a gripping height adjusting device for an article gripping machine capable of uniformly gripping various types of articles having different heights by linking height adjusting means for changing the gripping height of the gripping body. It is intended to be.

[0007]

In order to achieve the above-mentioned object, the present invention provides a pedestal on which articles are to be placed, and an elevating unit which is attached to the upper part of the pedestal and vertically moved by the elevating means. A body, a gripping adjustment rod which is vertically supported at an arbitrary position by a fixing means attached to the elevating body, and is provided upright so as to be parallel to the elevating body. A gripping body comprising a pair of rotary arms for gripping an article which can be freely opened and closed by a rotating means, a contact member provided below the grip adjusting rod, and a reference surface for contacting the contact member; Height adjusting means for changing a gripping height of the gripping body attached to the adjusting rod, wherein the rotating means is rotatably mounted on an upper portion of the elevating body and has an upper end linked to the rotating arm. Transmission shaft and the lower part in the elevating body A spline nut body, which is vertically fitted to the transmission shaft and is rotatably supported on the base, and a roller which is attached to the spline nut body and engages a cam provided on the machine body. With the attached lever,
Comprising a gripping height adjusting device for an article gripping machine.

[0008] Further, a receiving table mounted on a holding member provided on the base for mounting articles thereon and a fixing means mounted on the holding member in close proximity to the receiving table are supported so as to be freely detachable at an arbitrary position. A gripping adjustment rod that is erected in such a manner, a gripping body of an article that is provided above the gripping adjustment rod and that can be opened and closed by rotating means, and a contact member that is provided below the gripping adjustment rod. Height adjustment means for changing a grip height of the grip body attached to the grip adjustment rod having a reference surface in contact with a contact member, wherein the rotation means is rotatably mounted in the holder. Gripping height adjustment for an article gripping machine, comprising: a transmission shaft whose upper end is linked to the rotation arm; and a lever attached to a lower portion of the transmission shaft and fitted with a roller that engages a cam provided on the body. The configuration of the device.

[0009]

The present invention configured as described above has the following effects. When changing the type of an article, that is, when performing processing on another article having a different height, the elevating body attached with the receiving table is lowered to the lower limit by the elevating means.

Then, the grip adjusting rod to which the grip body is attached is released by releasing the fixing means and dropped by its own weight.

Then, the contact member provided below the grip adjusting rod hits the height adjusting means and stops.

When the height adjusting means is operated to adjust the height of the reference surface to a desired position, the grip adjusting rod moves up and down independently of the lifting body of the receiving table. The gripping position of the gripper attached to the object with respect to the article is changed.

In this state, when the holding means is fixed by operating the fixing means provided on the elevating body, the height of the receiving base and the holding body is set to be constant, and the receiving base and the holding body are fixed. Are linked in the elevating, the relative distance between the cradle and the gripping body does not change, and if the cradle is raised to a predetermined position by the raising / lowering means, preparation for processing into articles is made. .

The above-described adjustment of the gripping position of the gripping body is performed in the same manner even when the receiving table is fixed. In this case, when the type of the article is changed, the fixed position attached to the base is fixed. After the locking of the grip adjusting rod is released by operating the means, the same operation as described above is performed.

[0015]

Next, an embodiment of a gripping height adjusting device for an article gripping machine according to the present invention will be described with reference to the drawings.

In FIG. 1 to FIG. 5, reference numeral A denotes a gripping height adjusting device for an article gripping machine of the embodiment of the present invention, in which an article b, for example, a container b as shown in FIG. Or a machine for capping and winding the container b, or a so-called processing machine such as a washing machine for the container b and a cutting machine for the container b.

FIGS. 1 and 2 show a first embodiment of the present apparatus A, in which a receiving table 1 for an article b, an elevating body 2, a fixing means 3, a grip adjusting rod 4, Gripping body 5
, The contact member 6 and the height adjusting means 7.

Among these, the receiving table 1 is for mounting an article b and corresponding to a processing machine. A support 9 having a hollow inside is erected on a base 8 such as a frame. The elevating body 2 is inserted into the body 9 so as to be able to move up and down, and the pedestal 1 is horizontally mounted on the upper part of the elevating body 2.

The elevating body 2 is stably supported by the frame 8.

The gripping and adjusting rod 4 is supported by a fixing means 3 attached to the elevating body 2 so as to be freely detachable at an arbitrary position, and is erected in parallel with the elevating body 2. Is dropped and inserted by its own weight when the fixing means 3 is released.

The fixing means 3 fixes the gripping adjustment rod 4 at an arbitrary position, and adopts a commonly used configuration. One example is shown below. (The mechanism is not limited to this mechanism.) Then, the fixing means 3 illustrated in FIG.
On one side inside, a piston 14 provided with a tapered portion 13 which is constantly pressed in one direction by a spring 12 to the grip adjusting rod 4 is externally provided.

Further, a pair of brake arms 16, 16 having rotating fulcrums 15, 15 are mounted on the other side of the frame 11 in contact with the inner wall of the frame 11, and one end thereof is provided. Rollers 17, 17 are provided in the portion to contact the tapered portion 13 of the piston 14.

Further, the other end of each of the brake arms 16, 16 has a brake shoe 1 which comes into contact with and separates from the outer periphery of the grip adjusting rod 4.
When a fluid such as air is supplied to a passage 19 provided in the frame body 11, the piston 14
3 is moved upward in FIG. 3 against the pressing force of FIG. 3, so that the wedge effect of the tapered portion 13 is eliminated, and the brake shoes 18
Is not fixed.

However, when fluid is supplied to the passage 20 while discharging the fluid such as air sealed therein from the passage 19 provided in the frame body 11, the fluid pressure and the pressing force of the spring 12 cause the piston 14 3, the taper portion 13 of the piston 14 pushes the rollers 17, 17 of the brake arms 16, 16 by a wedge action, and the brake shoes 18, 18 at the other end move on the outer periphery of the grip adjusting rod 4. The gripping adjustment rod 4 is fixed and does not move because it is brought into contact with and clamped.

The above-mentioned gripping body 5 is, for example, for gripping the neck of the container b to prevent the container b from being deflected. The gripping body 5 is provided above the gripping adjustment rod 4 and can be opened and closed by rotating means 21. As shown in FIG. 4, a pair of turning arms 23 and 24 are opposed to a mounting plate 22 provided on the upper portion of the grip adjusting rod 4 to oppose the support shaft 2.
It is attached by 5 and 26, and it grips so that container b may be clamped at the tip.

An upper transmission gear 29 of a transmission shaft 28 provided inside the elevating body 2 is meshed with a passive gear 27 fixed to a lower end of the one support shaft 25.

The transmission shaft 28 has a lower portion formed by spline processing, and a spline nut body 31 rotatably supported by a bearing 30 provided on the base 8 is engaged with this portion. At the lower end of the nut body 31, a roller is attached to the outer end.
A lever 33 supporting the shaft 32 is attached.

Further, by engaging the roller 32 with a cam 34 attached to an unillustrated body, a spline nut body is rotated by a lever 33 which rotates according to the cam shape.
The transmission shaft 28 rotates via 31 and transmits the rotation to the support shaft 25.

The rotation of the support shaft 25 is controlled by the support shaft 2
The power is transmitted by interlocking gears 25a and 26a attached to the upper portions of the arms 5 and 26, respectively, to relatively open and close the rotating arms 23 and 24.

The elevating means 35 of the elevating body 2 is
By engaging a cam 37 attached to an unillustrated body with a roller 36 pivotally supported at the lower part of the elevating body 2, the elevating body 2 is raised and lowered as appropriate in accordance with the cam shape, and the upper part thereof is raised. The container b of the cradle 1 provided at the above is raised and lowered to perform predetermined processing.

The elevating body 2 is constructed so that a lifting force is always exerted by pneumatic pressure. The spline nut body 31 is formed in a hollow shape, and the elevating body 2 is provided at an appropriate position of the bearing 30. When the air pumped from the air holes 38 is fed into the lifting / lowering body 2 through the through holes 39 formed in the upper edge of the spline nut body 31, the air is guided by the spline nut body 31 and the support 9 to raise the lifting force. Is energized.

Therefore, the roller 36 of the elevating body 2 can always be kept pressed against the cam 37, and the responsiveness of the elevating body 2 is improved.

The above-mentioned height adjusting means 7 includes the grip adjusting rod 4.
And a reference surface 40 for contacting the contact member 6 provided at the lower end of the gripping member 4. The gripping height of the gripping body 5 attached to the gripping adjustment rod 4 to the article b is changed.

The configuration is such that an adjusting screw 42 having a reference surface 40 provided on the upper surface thereof is screwed to a screw shaft 41 erected from the base 8, and the screw shaft 41 is connected to a servo motor or the like. Driving means
The female screw body 42 moves up and down by rotating forward and backward by 43,
The position of the reference plane 40 changes.

The operation will be described with reference to the apparatus A of the first embodiment. For example, when the apparatus A is used for a liquid filling machine, when the filling of another container b is changed during operation. Once the filling machine is stopped and the supply of air from the air supply holes 38 is cut off and exhausted, the lifting body 2 loses its supporting force, so that it descends to its lower limit due to its own weight.

When air is supplied to the passage 19 in the fixing means 3 and the cylinder 14 is lifted up against the spring 12, the brake shoes 18, 18 of the brake arms 16, 16 are engaged with the grip adjusting rod 4. Since the grip adjusting rod 4 is released.
Is dropped by its own weight, and the contact member 6 thereunder hits the reference surface 40 of the height adjusting means 7 and stops.

The driving means in the height adjusting means 7
Activate 43 to screw the adjusting female screw body 42,
When the height of the fork 40 is adjusted to a desired position, the gripping adjustment rod 4 freely moves up and down without being restricted by the elevating body 2 of the receiving table 1.

Therefore, the gripping body 5 having the pair of rotating arms 23 and 24 attached to the upper part of the gripping adjustment rod 4 is
The holding position is changed to an appropriate gripping position with respect to the neck of the container b having changed height.

Further, in this state, the fixing means 3
When the air containing the brake arms 16, 16 is exhausted from the passage 19 at the same time, and the air is pressure-fed to the passage 20, the piston 14 moves down in cooperation with the spring 12, and the rollers 17 of the brake arms 16, 16 are moved. , 17, so
As a result, the brake arm 1
Since the brake shoes 6 and 16 rotate and the brake shoes 18 at the other end grip the gripping adjustment rod 4 and apply a braking force thereto, the gripping adjustment rod 4 is fixed at this position.

Further, the receiving table 1 and the gripping body 5 are
The relative distance between the two members is not changed since they are linked with each other. If the lifting member 2 is raised to a predetermined position by the lifting means 21, the container b is ready for filling.

Next, the apparatus A of the second embodiment shown in FIG. 5 will be described.

In this example, the receiving table 1 is of a fixed type, and the grip adjusting rods 4 move up and down independently.

The receiving table 1 is supported by a holder 44 attached to a base 8 such as a frame, and the article b is placed on the upper part thereof.

The gripping adjustment rod 4 is supported in the vicinity of the receiving table 1 by a fixing means 3 provided on the base 8 so as to be freely engaged and disengaged at an arbitrary position.

Therefore, the fixing means 3 and the grip adjusting rod 4
, The gripping body 5, the contact member 6, and the height adjusting means 7,
Since the same function and effect are obtained by the same configuration as that of the above-described first embodiment, detailed description will be omitted.

The rotating means 21 of the gripping body 5 is provided with a transmission shaft 28.
Is inserted into the holding body 44, and a transmission gear 29 meshing with the passive gear 27 of the support shaft 25 is attached to the upper part of the holder 44.The lower part of the transmission shaft 28 is provided with a rotating lever 33. A roller 32 engaging with the cam 34 is supported at the end, and is basically the same as the configuration of the first embodiment.

[0047]

According to the gripping height adjusting device for an article gripping machine of the present invention configured as described above, when the height of an article having a different height is changed, the height of the gripping body is automatically adjusted. Since it can be adjusted to the desired position, the adjustment work does not require manpower,
It can be easily performed in a short time.

Further, since the structure is simple, no space is required for mounting, the apparatus does not interfere with the apparatus, and the maintenance thereof is also easy. And so on.

[Brief description of the drawings]

FIG. 1 is a partially broken front view showing a first embodiment of a gripping height adjusting device for an article gripping machine according to the present invention.

FIG. 2 is an enlarged sectional view of a main part in FIG.

FIG. 3 is a longitudinal sectional view showing a fixing means in FIG. 1;

FIG. 4 is a plan view schematically showing a gripping body in FIG. 1;

FIG. 5 is a partially cutaway front view showing a gripping height adjusting device for an article gripping machine according to a second embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a diagrammatic outline of an article used in the apparatus according to the embodiment of the present invention.

[Explanation of symbols]

 b article 1 receiving stand 2 elevating body 3 fixing means 4 grip adjusting rod 5 gripping body 6 contact member 7 height adjusting means 8 base 35 elevating means 40 reference plane

Claims (2)

(57) [Claims] 1. A cradle on which articles are placed, an elevating body attached to the cradle on the upper part for raising and lowering the cradle by means of elevating means, and a fixing means attached to the elevating body for vertically moving at an arbitrary position. It comprises a grip adjusting rod which is supported so as to be able to be freely disengaged and stands upright so as to be parallel to the lifting / lowering body, and a pair of rotary arms which are provided above the grip adjusting rod and which can be opened and closed by rotating means and grip the article. A height adjusting means having a gripper, a contact member provided below the grip adjustment rod, and a reference surface for contacting the contact member, and changing a grip height of the gripper attached to the grip adjustment rod. Wherein the rotating means is rotatably mounted on the upper part of the elevating body and rotatably attached to the upper end thereof with the rotating arm, and is vertically movable with the transmitting shaft at the lower part of the elevating body. Into the base, and rotate the lower part to the base. A spline nut that is supported freely, article grippers for gripping height adjustment device characterized by comprising a lever fitted with a roller which engages a cam provided on the machine body attached to the spline nut. 2. A pedestal on which a product is mounted by being attached to a holder provided on a base, and a fixing means attached to the holder in proximity to the pedestal so as to be detachably supported at an arbitrary position. A gripping adjustment rod that is erected in such a manner, a gripping body of an article that is provided above the gripping adjustment rod and that can be opened and closed by rotating means, and a contact member that is provided below the gripping adjustment rod. Height adjustment means for changing a grip height of the grip body attached to the grip adjustment rod having a reference surface that comes into contact with the contact member, wherein the rotation means is rotatably mounted in the holder. And a transmission shaft having an upper end linked to the rotating arm, and a lever attached to a lower portion of the transmission shaft and fitted with a roller for engaging a cam provided on the machine body. Gripping height adjustment device.