JPH09202585A - Clamping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp device being a mechanism to automatically grasp and release an article and constituted to regulate an opening and closing amount and the opening and closing timing of a suspension metal fitting, and reliably grasp and release bags having various sizes and materials. SOLUTION: In constitution that a suspension metal fitting 2 is opened and closed along with vertical slide of a slide member 3 mountable to other elevation device, a slide plate 5 to be vertically slidable and fixed in an arbitrary position is arranged at the lower part of the slide member 3. Further, a notch part 25 formed in the slide member 3 to slide a moving pin 20 loosely fitted in the approximately L-shaped kerf part 10 of a hook 9 is vertically regulatable. Further, the length of a coupling rod 21 to intercouple the kerf part 10 of the hook 9 and a sensing plate 22 for an article is regulatable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a clamp device capable of automatically lifting and lowering bag articles.

[0002]

2. Description of the Related Art For example, Japanese Patent Publication No. Sho 54-1965 discloses an example of a clamping device that can automatically grasp and separate articles.
The structures described in Japanese Patent Publication No. 1 and Japanese Patent Publication No. 49-31055 are known. However, the automatic opening / closing mechanism of these clamp devices has a drawback in that the amount of opening and closing of the hanging metal fittings and the timing of opening and closing the hanging metal fittings cannot be adjusted, and the articles to be gripped are limited in a narrow range. In particular, when a bag article is gripped or released, the shape of the article is changed during the operation of grasping the article by the hanging metal fitting, and the article cannot be reliably grasped and released. Further, when gripping a bag such as a hemp bag, as shown in FIG. 11, a bag hooking portion 40 is provided on the object gripping side portion 11 of the hanging metal fitting 2,
There is a method of grasping the bag 41 and hooking and lifting it,
The bag hooking part 40 bites into the bag 41 more than necessary, and the hanging metal fitting 2
When the bag is opened, the bag hooking portion 40 is caught by the bag 41, and the hanging metal fitting 2
Was not separated from the bag 41 in some cases.

[0003]

SUMMARY OF THE INVENTION A mechanism for automatically grasping or separating an article is constructed so that the opening / closing amount of a hanging metal fitting and the opening / closing timing of a hanging metal fitting can be adjusted, and various sizes and materials can be used. An object of the present invention is to obtain a clamp device capable of reliably grasping and separating a bag.

[0004]

[Means for Solving the Problems] Suspended metal fittings 2 each having an object gripping side portion 11 curved inward are pivotally supported at both ends of a suspension beam 1, and the suspension beam 1 is vertically moved at a substantially central portion thereof. A slidable sliding member 3 is provided, and the sliding member 3 and the upper end of the hanging fitting 2 are connected to the opening / closing rod 4
And the lower part of the hanging metal fitting 2 is opened and closed as the sliding member 3 slides in the vertical direction. A slide plate 5 slidable in the vertical direction is provided below the member 3, and the slide plate 5 can be fixed at any position. Further, along the sliding rod 6 fixed to the substantially central portion of the suspension beam 1, there is provided a sliding member 3 provided with a notched groove 7 that is slidable in the vertical direction, and the sliding member 3 descends to the lowermost position. At this time, the pin 8 is fixed to the sliding member 3 at the position where the hook 9 rotatable about the sliding rod 6 is engaged.
Is provided with a substantially L-shaped cut groove portion 10, and a connecting rod 21 to which a movable pin 20 loosely fitted in the cut groove portion 10 is fixed,
The hanging rod 1 is pivotally attached to the sensing plate 22 of the article pivotally supported at one end of the hanging beam 3, and the sliding member 3 is oscillated in the upward direction, whereby the connecting rod 2
The slide member 3 is provided with a notch 25 capable of sliding the movable pin 20 at the upper end of the first member 1. The notch 25 can be adjusted in the vertical direction. Furthermore, the length of the connecting rod 21 is adjustable, and the slot 15 is provided in the upper part of the opening / closing rod 4.

[0005]

In the structure in which the lower portion of the hanging metal fitting 2 is opened and closed as the sliding member 3 slides in the vertical direction, the slide plate 5 is provided below the sliding member 3 and the sliding plate 5 is placed at any position. When the slide plate 5 is fixed by sliding the slide plate 5 in the upward direction, the length of the notch groove 7 that determines the slidable amount of the sliding member 3 in the vertical direction becomes shorter. The amount by which the lower part of the hanging fitting 2 closes can be restricted to a small amount, the hanging fitting 2 does not bite into a hemp bag or the like more than necessary, and the article can be easily released from the gripped state. If the slide plate 5 is slidable, when the slide plate 5 slides downward, the length of the notch groove 7 that determines the slidable amount of the slide member 3 in the vertical direction becomes long. Along with this, the slidable amount of the sliding member 3 in the vertical direction increases, the amount of closing the lower part of the hanging metal fitting 2 increases, and even a narrow bag can be gripped. When the clamp device of the present invention is unloaded from the top of the article, the article comes into contact with the sensing plate 22 and rotates,
The movable pin 20 fixed to the upper end of the connecting rod 21 slides on the lower surface of the substantially L-shaped groove 10 provided on the hook 9 to rotate the hook 9. Movable pin 20 of the connecting rod 21
When the sliding member 3 is oscillated upward, the notch 25 of the sliding member 3 slides the movable pin 20 of the connecting rod 21 in the right direction in FIG. As shown in FIG. 9, if the vertical adjustment is possible, the sliding member 3
The timing at which the cutout portion 25 slides the movable pin 20 changes when the slide pin is slid upward. That is, when a wide bag is to be grasped, if the notch 25 is fixed at the upper position, the hook 9 can be closed while the lower amount of the hanging metal fitting 2 is small.
The movable pin 20 can be slid in the longer kerf of the substantially L-shaped kerf 10, and conversely, if the notch 25 is fixed at the lower position, the lower part of the hanging fitting 2 will be closed to some extent. Since the movable pin 20 is slid, it is possible to more reliably grip a wide range of articles from a wide bag to a narrow bag. Further, as the sensing plate 22 rotates, the connecting rod 2
The amount by which 1 rotates the hook 9 is influenced by the height of the article, and increases when the article height is high and decreases when the article height is low, but if the length of the connecting rod 21 is adjustable. ,
The amount of rotation of the hook 9 can be adjusted irrespective of the height of the article, and it is possible to grasp a wide range of bags from articles having a high article height to articles having a low article height. Further, as shown in FIG. 10, when the elongated hole groove portion 15 which is capable of sliding on the hanging fitting upper fulcrum 12 is provided on the upper part of the opening / closing rod 4, the hanging fitting 2 holds the article, that is, the lower part of the hanging fitting 2 is inside. The sliding member 3 can be slid downward with the hook 9 closed.
When is engaged with the pin 8 of the sliding member 3, since the sliding member 3 does not slide in the vertical direction, there is no force to close the hanging fitting 2,
The lower part of the hanging fitting 2 can be smoothly pulled out from the gap between the grasped article and the other article, and the packing of the other article is not destroyed.

[0006]

Embodiments of the present invention will now be described with reference to the accompanying drawings. The hanging metal fittings 2 in which the article gripping side portions 11 are mutually curved inward are pivotally supported at the hanging metal fitting supporting points 13 provided at both ends of the hanging beam 1. A supporting plate 14 to which a sliding rod 6 is fixed is provided in a shape sandwiching the sliding member 3 on the substantially center upper side of the suspension beam 1, and a supporting plate guide 16 fixed to the sliding member 3 is further provided. The support plate 14 and the support plate guide 16 regulate the sliding member 3 so that it can slide only in the vertical direction. The sliding member 3 is formed by two plates arranged in parallel, and is provided with a vertically elongated hole for sliding the sliding rod 6. A U-shaped slide plate 5 is provided on each of the two parallel plates of the sliding member 3 in the lower part of the vertical cutout groove 7 of the sliding member 3. Oblong holes 17 are formed on both sides of the slide plate 5 so that the slide member 3 can slide in the vertical direction. Further, the elongated hole portion 17 of the slide plate 5 can be fixed at an arbitrary position with a bolt 18. The middle part of the sliding member 3 and the upper end of the hanging member 2 are connected by two opening / closing rods 4, and the lower part of the hanging member 2 opens and closes as the sliding member 3 slides in the vertical direction. In the clamp device of the present invention, the upper part of the sliding member 3 is attached to another lifting device, and the sliding member 3 slides in the vertical direction to grip and release the article. A hook fulcrum 19 parallel to the sliding rod 6 is provided on the upper side of the sliding rod 6, and a hook 9 having the hook fulcrum 19 as a rotation center is provided. The upper part of the hook 9 has a height of 2 of the sliding member 3 when the sliding member 3 is lowered to the lower limit.
It is configured to engage a pin 8 fixed between the parallel plates. A stopper 23 of the sensing plate 22 is fixed to the lower portion of the suspension beam 1, and a spring hooking plate 24 protruding upward is fixed to the stopper 23. The spring hooking plate 24 and the lower portion of the hook 9 are biased by a spring 30, the hook 9 is biased clockwise, and the sliding rod 6 also serves as a stopper for turning the hook 9. . The hook 9 is provided with a substantially L-shaped cut groove portion 10, and a connecting rod 21 to which a movable pin 20 that is loosely fitted in the cut groove portion 10 is fixed is attached. The other side end of the connecting rod 21 is pivotally attached to the inside of the sensing plate 22 which is pivotally supported together with the hanging metal fitting support point 13 at one end of the hanging beam 1.

Next, the operation of the clamp device of the present invention for gripping or separating an article will be described. The basic state of the clamp device is shown in FIG. In this basic state, when the clamp device is lowered from the article to be grasped, the sensing plate 22 first comes into contact with the article. When the clamp device is further lowered, the sensing plate 22 rotates clockwise, and at the same time, the sensing plate 22 is rotated.
The movable pin 20 fixed to the upper end of the connecting rod 21 that connects the substantially L-shaped cut groove portion 10 of the hook 9 swings diagonally toward the upper left side along the lower surface of the substantially L-shaped cut groove portion 10.
From the time when the movable pin 20 oscillates to the shorter kerf end of the substantially L-shaped kerf portion 10, the connecting rod 21 overcomes the force of the spring 30 urging the hook 9 in the clockwise direction to move the movable pin 20. The pin 20 rotates the hook 9 in the counterclockwise direction at the position of the end of the kerf 10, and the hook 9 is disengaged from the pin 8 fixed between the two parallel plates of the sliding member 3, It becomes the state of. The timing for removing the hook 9 from the pin 8 can be changed by adjusting the length of the connecting rod 21 by an appropriate method. In the embodiment of the present invention, as shown in FIG. 8, the connecting rod 21 is divided into two parts.
One plate on each side is provided with an elongated hole so that the two plates can slide, and the two plates are fixed by tightening with a bolt 26. That is, regardless of whether the article height is high or low, the timings at which the hooks 9 are disengaged from the pins 8 can be adjusted substantially at the same time.

When the sliding member 3 is lifted from the state shown in FIG. 4, the notch 25 of the sliding member 3 contacts the movable pin 20,
State. When the sliding member 3 is further raised, the notch 25 of the sliding member 3 causes the movable pin 20 to slide to the right, and the movable pin 20 is placed on the upper surface of the shorter L-shaped groove 10. Slide along. When the sliding member 3 is raised as it is, the movable pin 20 enters the longer kerf of the substantially L-shaped kerf 10, and the hook 9 urged clockwise by the spring 30 is shown in FIG. Thus, it returns to the same basic position as in FIG. However, since the sliding member 3 is located at a position higher than the basic state shown in FIG. 3, the hook 9 does not engage with the pin 8. The position of the notch 25 of the sliding member 3 can be adjusted in the vertical direction with an appropriate configuration as shown in FIG. 9, so that the movable pin 20 enters the longer groove of the groove 10. You can change the timing. FIG.
Even in this state, since the sliding member 3 has already moved up from the position in the basic state shown in FIG. 3, the hanging metal fitting 2 is in a slightly closed state via the opening / closing rod 4, but further sliding By raising the member 3, the lower part of the hanging metal fitting 2 is closed and the article is gripped. As shown in FIG. 7, the sliding member 3 slides substantially vertically along the sliding rod 6 until the sliding rod 6 is located at the lower end of the vertical slot provided in the sliding member 3. Can be slid. However, when the article is hard or wide, as shown in FIG. 6, the article may be grasped while the sliding rod 6 is positioned in the middle of the vertical slot provided in the sliding member 3. .
It is possible to grab and lift an article by the operation so far.

Next, the operation of releasing the grasped article will be described. When the clamp device that lifts the article is lowered in the state of FIG. 7, the article or the lower end of the hanging fitting 2 is grounded. Further, the sliding member 3 is lowered to rotate the opening / closing rod 4 and the hanging metal fitting 2
While the lower part of the slide member opens outward, the pin 8 of the sliding member 3
It contacts the head 27 of the hook 9. The head 27 of the hook 9 has an oblique shape. When the sliding member 3 is further lowered,
In contrast to the pin 8 which slides in the diagonal portion of the hook 9 having the shape of the head 27 and descends in a substantially vertical direction, the hook 9 is
It is turned counterclockwise. Since the hook 9 is biased by the spring 30, when the pin 8 slides to the hooked portion of the hook 9, the hook 9 engages with the pin 8. When the sliding member 3 is lifted from this state, the sensing plate 22 that was in contact with the article rotates counterclockwise by its own weight,
At the same time, the connecting rod 21 is also lowered to return to the basic state shown in FIG. When the clamp device that lifts the article in the state of FIG. 7 is lowered and the article or the lower end of the hanging fitting 2 is grounded, the sliding member 3 is lowered and the lower part of the hanging fitting 2 is opened via the opening / closing rod 4, but the clamp is used. If there is another article on one side or both sides of the article lowered together with the device, it is desirable that the lower part of the hanging fitting 2 is not opened. This is because when the lower part of the hanging metal fitting 2 is opened, another article may be moved. Therefore, as shown in FIG. 10, if a slotted groove portion 15 is provided in the upper part of the opening / closing rod 4 that interlocks the sliding member 3 and the upper end of the hanging metal fitting 2, the hanging metal fitting 2 lower part is kept closed and opened / closed. The long hole groove portion 15 of the rod 4 is the upper fulcrum 12 of the hanging metal fitting.
The sliding member 3 can be lowered by sliding. If the hook 9 is engaged with the pin 8 of the sliding member 3, even if the sliding member 3 is lifted, the hanging metal fitting 2 does not have a force to grip the article,
When the sliding member 3 is raised, the lower part of the hanging fitting 2 can be smoothly pulled out along the side surface of the article.

[Brief description of drawings]

FIG. 1 is an overall front view showing the present invention.

FIG. 2 is an overall right side view of FIG.

FIG. 3 is a schematic diagram showing the operation of the embodiment of the present invention.

FIG. 4 is a schematic diagram showing the operation of the embodiment of the present invention.

FIG. 5 is a schematic diagram showing the operation of the embodiment of the present invention.

FIG. 6 is a schematic diagram showing the operation of the embodiment of the present invention.

FIG. 7 is a schematic diagram showing the operation of the embodiment of the present invention.

FIG. 8 is a partially enlarged view showing the present invention.

FIG. 9 is a partially enlarged view showing the present invention.

FIG. 10 is an operation explanatory diagram of the embodiment of the present invention.

FIG. 11 is a partially enlarged front sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suspended beam 2 Suspended metal fitting 3 Sliding member 4 Opening / closing rod 5 Sliding plate 6 Sliding rod 7 Notch groove 8 Pin 9 Hook 10 Cut groove part 11 Object gripping side part 15 Long hole groove part 20 Movable pin 21 Connecting rod 22 Sensing plate 25 Notch

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[Procedure amendment]

[Submission date] January 30, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004]

[Means for Solving the Problems] Suspended metal fittings 2 each having an object gripping side portion 11 curved inward are pivotally supported at both ends of a suspension beam 1, and the suspension beam 1 is vertically moved at a substantially central portion thereof. A slidable sliding member 3 is provided, and the sliding member 3 and the upper end of the hanging fitting 2 are connected to the opening / closing rod 4
And the lower part of the hanging metal fitting 2 is opened and closed as the sliding member 3 slides in the vertical direction. A slide plate 5 slidable in the vertical direction is provided below the member 3, and the slide plate 5 can be fixed at any position. Further, along the sliding rod 6 fixed to the substantially central portion of the suspension beam 1, there is provided a sliding member 3 provided with a notched groove 7 that is slidable in the vertical direction, and the sliding member 3 descends to the lowermost position. At this time, the pin 8 is fixed to the sliding member 3 at a position where the hook 9 rotatable about the hook fulcrum 19 is engaged, and the hook 9 is provided with a substantially L-shaped kerf portion 10. , A connecting rod 2 to which a movable pin 20 that is loosely fitted in the cut groove portion 10 is fixed
1 is pivotally attached to a sensing plate 22 of an article pivotally supported at one end of the suspension beam 1 and the sliding member 3 is oscillated upward to slide the movable pin 20 at the upper end of the connecting rod 21. The sliding member 3 is provided with a possible notch 25, and the notch 25 can be adjusted in the vertical direction. Furthermore, the length of the connecting rod 21 is adjustable, and the slot 15 is provided in the upper part of the opening / closing rod 4.

Claims (4)

[Claims] 1. A suspension metal fitting (2) having inwardly curved object gripping side portions (11) is pivotally supported at both ends of the suspension beam (1), and a substantially central portion of the suspension beam (1). Is provided with a sliding member (3) that can slide in the vertical direction, and the sliding member (3) and the upper end of the hanging metal fitting (2) are connected by an open / close rod (4), so that the sliding member (3) moves in the vertical direction. A lower part of the hanging member (2) is opened and closed by sliding on the sliding member, and a clamp device that can be attached to an elevating device that lifts the upper part of the sliding member (3). A clamp device characterized by being provided with a slide plate (5) which is slidable in the vertical direction and being configured so that the slide plate (5) can be fixed at an arbitrary position. 2. A notch groove (7) which is vertically slidable along a sliding rod (6) fixed to a substantially central portion of the suspension beam (1).
The sliding member (3) provided with the sliding member (3) is provided, and when the sliding member (3) descends to the lowest position, the position where the hook (9) rotatable around the sliding rod (6) as a rotation center is engaged. Then, the pin (8) is fixed to the sliding member (3), the hook (9) is provided with a substantially L-shaped cut groove portion (10), and the movable pin is loosely fitted in the cut groove portion (10). The connecting rod (21) to which (20) is fixed is pivotally attached to the sensing plate (22) of the article pivotally supported at one end of the suspension beam (1), and the sliding member (3) slides upward. Thus, the slide member (3) is provided with a notch (25) capable of sliding the movable pin (20) at the upper end of the connecting rod (21), and the notch (25) is arranged in the vertical direction. The clamp device according to claim 1, wherein the clamp device is adjustable. 3. Clamping device according to claim 2, characterized in that the length of the connecting rod (21) can be adjusted. 4. The clamp device according to claim 1, wherein the opening / closing rod (4) is provided with an elongated groove portion (15).