JP3824728B2 - Hanging tool - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a hanging tool used to suspend a material on a conveyance frame in a surface treatment apparatus that hangs a surface treatment material such as an aluminum mold on the conveyance frame.
[0002]
[Prior art]
As this kind of conventional hanging tool, for example, there is one shown in Japanese Utility Model Laid-Open No. 5-10470.
Although not shown in detail, the conventional hanging tool fixes a holding body that also serves as a current-carrying bar to the lower part of a base frame made of two plates, and has a cam-type holding claw at the tip of the base frame. Is pivotally attached so that the material to be treated is held between the holding claw and the tip of the holding body according to the thickness thereof, while the tip of the operation lever is attached to the rear of the base frame. While pivotably pivoting to the end side, the tip end of the operating lever and the gripping claw are connected via the first link and the second link, the top end of the base frame and the top end of the second link The holding claw is normally configured to be urged to rotate in the closing direction by the spring pressure of the tension coil spring mounted therebetween.
[0003]
In addition, a long slider having a U-shaped cross section that moves back and forth between the forward position, the intermediate position, and the backward position while sliding on the holding body is provided inside the base frame, and the rear end of the operation lever The pivot end is pivotally attached to the base end of the extrusion arm, and the connection formed at the free end of the extrusion arm in the connection slot formed at the center of both sides of the slider. By loosely fitting the shaft, the slider is moved between the above positions by rotating the operation lever.
[0004]
Furthermore, lock pins are provided on both sides of the gripping claws, and the rear end of the operation lever is slightly rotated toward the gripping body against the spring pressure of the tension coil spring, and the gripping claws are rotated in the opening direction. In this way, the gripping claw can be locked in the half-open standby state by placing and engaging the lock pin with the tip engaging recess of the slider waiting at the intermediate position.
[0005]
Therefore, when the surface-treated material is suspended from the conveyance frame using such a conventional hanging tool, the rear end portion of the operating lever of the hanging tool is slightly rotated against the spring pressure of the tension coil spring. The holding claw is placed in the tip engagement recess of the slider while the holding claw is rotated in the opening direction to lock the holding claw in the half-open standby state. If the material is inserted between the tip of the gripping body and the slider is forcibly retracted to the retracted position on the gripping body, the locking pin of the gripping claw will automatically disengage from the tip engagement recess of the slider. Is the spring pressure of the tension coil spring, and the gripping claw descends while rotating in the closing direction via the first and second links and grips the material with the tip of the gripping body. The material is suspended on the side of the conveyance frame via a hanging tool.
[0006]
Also, when the material is removed from the hanger after the predetermined surface treatment process is completed, the gripping claws are moved in the first and second directions in conjunction with the rotation of the rear end of the operation lever toward the gripping body. The slider rotates immediately in the opening direction via the two links, but the slider does not move forward until the connecting shaft of the pusher arm moves within its own connecting long hole, and the connecting shaft is connected to the connecting long hole. Only when it abuts the edge, the slider advances to the advanced position and pushes the material completely outward from the tip of the gripper so that the material can be automatically removed from the hanger. . For this reason, there is no fear that the slider advances and collides with the material that is still in the holding state and deforms before the holding claw has been raised in the opening direction.
[0007]
[Problems to be solved by the invention]
Therefore, in the conventional hanging tool, the material can be automatically held and the material can be removed only by locking the holding claw in the half-open standby state and retracting the slider at the end of the inserted material. At this time, it is advantageous that the material can be automatically removed from the suspension tool by simply rotating the operation lever and moving the slider to the forward position with a time difference. In addition to a long slider that moves forward and backward between the forward position, the intermediate position, and the backward position, an extrusion arm that moves the slider in conjunction with the operation lever is required to enable easy removal. Therefore, due to this, the hanging tool itself is complicated and large in size, and has a big problem that the cost is naturally increased.
[0008]
[Means for Solving the Problems]
The present invention was developed in order to effectively solve the problem of such a conventional hanging tool. The invention according to claim 1 is a gripping body fixed to a base frame, and a tip portion of the gripping body. A holding claw with a lock pin that is pivotally attached to the base frame so as to be pivotable, an operation lever that is pivotally attached to the base frame and has a tip connected to the holding claw, and a holding claw at all times. A suspension member provided with a spring member that is urged to rotate in a closing direction, on the holding member, between a forward position approaching the tip of the holder and a retracted position spaced from the tip of the holder. provided Carlo click fitting to move while elastically urging the lock fitting to always forward position direction, provided with a stopper portion for regulating the movement in the forward position direction of the lock fitting to the operating lever, the operating lever When the restriction of the lock bracket by the stopper is released during the pivoting operation, the lock bracket moves to the advanced position. There was adopted a configuration in which engaged placing engagement locking pin of the clamping claw at the distal end upper portion of the lock fitting.
[0009]
According to a second aspect of the present invention, there is provided a gripping body fixed to the base frame, a gripping claw with a lock pin pivotally attached to the base frame so as to face the tip of the gripping body, A suspension device comprising an operation lever pivotally attached to a frame and having a tip portion connected to a gripping claw, and a spring member that normally urges the gripping claw to rotate in a closing direction. An engaging recess that engages the lock pin of the gripping claw is formed to pivotally attach a lock fitting that maintains a vertical posture , and the lower end of the lock fitting is always elastically biased toward the gripping claw. Thus, a configuration is adopted in which the lock pin of the holding claw that rotates in the opening direction is engaged with the engagement recess of the lock fitting by the rotation operation of the operation lever.
[0010]
Therefore, when the surface-treated material is suspended from the conveying frame under the suspension tool according to claim 1, the rear end portion of the operation lever is rotated toward the holding body against the spring pressure of the spring member. Then, the holding claw rotates in the opening direction, and at the same time, the stopper portion of the operation lever rotates in the reverse direction to release the restriction on the lock fitting, so that the lock fitting moves toward the forward movement position by the biasing spring pressure. It is acceptable.
[0011]
Therefore, if the clamping pin of the gripping claw is engaged with the tip of the lock fitting, the clamping claw can be securely locked in the half-open standby state. If the lock fitting is retracted to the retracted position against the biasing spring pressure on the holding body, the holding pin of the holding claw will automatically come off from the tip of the lock fitting and Since the material is held between them, the material is thereby suspended on the conveyance frame side via the suspension tool.
[0012]
In addition, when removing the material from the hanging tool, if the rear end of the operation lever is turned to the holding body side, the holding claw is rotated in the opening direction in conjunction with this. However, turning the operation lever allows the lock fitting to move in the forward movement position direction, so that the material can be moved forward by the advancement of the lock fitting. Protruded outward. Therefore, by using this protruding action, the material can be removed relatively easily.
[0013]
When the surface-treated material is suspended from the conveying frame under the suspension tool according to claim 2, the rear end portion of the operation lever is rotated toward the holding body against the spring pressure of the spring member. At the same time that the claw rotates in the opening direction, the lock pin of the holding claw comes into contact with the lock fitting, and the lower end of the lock fitting is turned away from the holding claw against the biasing spring pressure.
[0014]
When the lock pin enters into the engagement recess of the lock fitting, the lower end of the lock fitting is rotated back to the holding claw direction by the biasing spring pressure, and the lock pin of the holding claw is engaged with the engagement recess of the lock fitting. Thus, the gripping claws can be reliably locked in the half-open standby state.
[0015]
Therefore, after that, a surface-treated material is inserted between the holding claw and the tip of the holding body, and this time, the lower end portion of the lock fitting is opposed to the biasing spring pressure at the end of the material. If it is rotated in the direction away from the holding pin, the lock pin of the holding claw is automatically detached from the engagement recess of the lock fitting, and the material is held between the tip of the holding body. It is hung to the conveyance frame side via a hanging tool.
[0016]
In addition, when removing the material from the hanging tool, if the rear end of the operation lever is turned to the holding body side, the holding claw is rotated in the opening direction in conjunction with this. However, when the operation lever is turned and the lock pin of the holding claw is inserted into the engagement recess of the lock fitting, the lower end of the lock fitting is held by the biasing spring pressure. Since the rotation is returned in the direction, the material is protruded outward by the return of the rotation of the lock fitting. Therefore, by using this protruding action, the material can be removed relatively easily as well.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on preferred embodiments illustrated in the drawings.
First, as shown in FIG. 1, the hanging tool according to the first embodiment includes a holding body 2 that also serves as an energization bar fixed to a lower portion of a base frame 1 made of two plate members, and the holding body 2. A cam-type gripping claw 4 with a lock pin 3 that is pivotally attached to the base frame 1 so as to face the front end portion 2 a, and a pivotal hole 5 that is pivotally attached to the base frame 1 so that the front end portion is connected to the long slot 5. And an operating lever 7 connected to the holding claw 4 via the connecting shaft 6, and mounted between the rear end portion of the operating lever 7 and the rear end portion of the holding body 2, so that the holding claw 4 is normally rotated in the closing direction. And a leaf spring 8 to be energized.
[0018]
And in 1st embodiment, the cross-sectional U-shape which moves between the advance position and the retreat position while sliding on the holding body 2 inside the said base frame 1 under such a premise structure is used. A horizontal lock metal fitting 9 is provided, and mounting pieces 10 and 11 are integrally provided on the substantially intermediate portion side of the lock metal fitting 9 and the rear end side of the base frame 1, respectively. A configuration is adopted in which the compression coil spring 12 is mounted so as not to fall off via a screw 13 or the like, and the lock fitting 9 is always elastically biased toward the forward movement position by the spring pressure of the compression coil spring 12. In the figure, reference numeral 14 denotes a guide shaft for guiding the movement of the lock fitting 9.
[0019]
In addition to this, a columnar or spherical shape in which a V-shaped extension wall 7a is vertically suspended from both side intermediate portions of the operation lever 7 and the mounting piece 10 on the side of the lock fitting 9 is brought into contact with the tip of each extension wall 7a. In the closed state in which the stopper portion 15 exhibiting the above is integrally provided and the gripping claw 4 is in contact with the distal end portion 2a of the gripping body 2, the lock fitting 9 is moved to its retracted position against the spring pressure of the compression coil spring 12. When the control lever 7 is stopped and the rear end of the operation lever 7 is turned to the holding body 2 side, the stopper 15 is turned in the reverse direction, and the lock fitting 9 is moved forward by the spring pressure of the compression coil spring 12. The structure that moves to the position is also adopted.
[0020]
Therefore, when the surface-treated material M is suspended from a transport frame (not shown) using the suspension tool according to the first embodiment, the rear end portion of the operation lever 7 of the suspension tool is connected to the leaf spring. When the gripping member 4 is rotated against the spring pressure of 8, the gripping claw 4 is rotated in the opening direction, and at the same time, the stopper portion 15 of the operating lever 7 is rotated in the reverse direction. Since the restriction on the lock fitting 9 is released, the lock fitting 9 is allowed to move toward the forward movement position by the spring pressure of the compression coil spring 12.
[0021]
Therefore, as shown in FIG. 2, if the lock pins 3 projecting on both side surfaces of the holding claw 4 are placed and engaged with the upper edge of the tip of the lock fitting 9, the holding claw 4 is surely put in the half-open standby state. Since the material can be locked, the material M is inserted between the gripping claw 4 locked in the half-open standby state and the tip 2a of the gripping body 2 as in the prior art, and as shown in FIG. At the end, when the lock fitting 9 is forcibly retracted to the retracted position against the spring pressure of the compression coil spring 12 on the holding body 2, the lock pin 3 of the holding claw 4 is moved to the upper edge of the tip of the lock fitting 9. The gripping claw 4 descends while rotating in the closing direction by the spring pressure of the leaf spring 8, and as shown in FIG. The material M is held in accordance with the thickness of the material M, so that the material M is suspended on the conveying frame side via the suspension tool. It is.
[0022]
Further, when the predetermined surface treatment process is completed and the material M is removed from the hanging tool, the rear end portion of the operation lever 7 is rotated toward the gripping body 2 side, and the gripping claws 4 are interlocked with this. Therefore, it is needless to say that the material M can be removed only in this state. However, the rotation of the operation lever 7 means that the lock fitting 9 is moved in the forward position direction as described above. Therefore, when the lock fitting 9 advances, the material M is protruded outward by the amount of advancement.
[0023]
Therefore, under the first embodiment, the material M cannot be completely pushed outward by the turning operation of the operation lever 7 as in the prior art, but the material M is moved by the advancement of the lock fitting 9. This allows the material M to be removed relatively easily. In particular, it can be said that such a protruding action is much more effective for a light and small material M. Further, the material M can be removed after the holding claw 4 is locked in the half-open standby state again.
[0024]
Next, the hanging tool according to the second embodiment will be described. The premise structure of the second embodiment is the same as that of the first embodiment as shown in FIG. However, the difference is that the following configuration is adopted.
[0025]
That is, in the second embodiment, as shown in the drawing, a vertical lock fitting 9 having a U-shaped cross section formed with an engagement recess 16 is formed on the base frame 1 near the holding claw 4 via the shaft 17. It is pivotally mounted, and a tension coil spring 18 is mounted between the upper end portion of the lock fitting 9 and the rear end upper portion of the base frame 1, and the lower end of the lock fitting 9 is applied by the spring pressure of the tension coil spring 18. The structure which elastically urges the part side in the direction of the holding claw 4 along the holding body 2 surface is employ | adopted. In the figure, reference numeral 19 denotes a stopper shaft that regulates the rotational position of the lock fitting 9, and the vertical lock fitting 9 is maintained in a vertical posture with respect to the holding body 2 by the action of the stopper shaft 19.
[0026]
Therefore, when the surface treatment material M is suspended from a transport frame (not shown) using the suspension tool according to the second embodiment, the rear end portion of the operation lever 7 of the suspension tool is attached to the leaf spring 8. 6, the holding claw 4 rotates in the opening direction and at the same time protrudes on both side surfaces of the holding claw 4. The lock pin 3 that is in contact with the arc edge 9 a of the lock fitting 9 rotates the lower end portion of the lock fitting 9 in a direction away from the holding claw 4 against the spring pressure of the tension coil spring 18.
[0027]
When the lock pin 3 passes through the arc edge 9 a and enters the engagement recess 16 of the lock fitting 9, the spring pressure of the tension coil spring 18 until the lower end of the lock fitting 9 is restricted by the stopper shaft 19. As shown in FIG. 7, the locking pin 3 of the clamping claw 4 is completely engaged with the engaging recess 16 of the lock fitting 9, so that the clamping claw 4 is opened halfway. It can be reliably locked in the standby state.
[0028]
Therefore, after that, the material M is inserted between the holding claw 4 locked in the half-open standby state and the tip 2a of the holding body 2, and as shown in FIG. If the part is rotated in a direction away from the holding claw 4 against the spring pressure of the tension coil spring 18, the lock pin 3 of the holding claw 4 is automatically detached from the engagement recess 16 of the lock fitting 9, This time, with the spring pressure of the leaf spring 8, the holding claw 4 is lowered while rotating in the closing direction, and the material M is made thicker between the tip 2a of the holding body 2 as shown in FIG. Accordingly, the material M is suspended on the conveyance frame side via the suspension tool.
In the holding state of the material M, as shown in the drawing, the lock fitting 9 is placed in a state of being rotated in a direction away from the holding claw 4.
[0029]
Further, when the predetermined surface treatment process is completed and the material M is removed from the hanging tool, the rear end portion of the operation lever 7 is rotated toward the gripping body 2 side, and the gripping claws 4 are interlocked with this. Since the material M can be removed only in this state, the operation lever 7 is rotated and the lock pin 3 of the holding claw 4 is similarly turned. When the lock fitting 9 is inserted into the engagement recess 16, the lower end portion of the lock fitting 9 is returned to the holding claw 4 by the spring pressure of the tension coil spring 18. At the time of return, the material M is pushed outward by the amount corresponding to the return.
[0030]
Therefore, even under the second embodiment, the material M cannot be completely pushed outward by the turning operation of the operation lever 7 as in the prior art. As a result, it is possible to remove the material M relatively easily. Also, the material M can be removed after the holding claw 4 is locked in the half-open standby state again in the same manner as in the first embodiment.
[0031]
【The invention's effect】
As described above, according to the present invention, by adopting the above-described configuration, the holding claw can be reliably locked in the half-open standby state under an extremely simple structure without making the hanging tool itself complicated and large. Even when the surface treatment material is removed, the material can be protruded outward by an amount corresponding to the advancement or return of the rotation of the lock fitting, so that the material removal operation is facilitated.
Therefore, the present invention can greatly contribute to the reduction in cost by simplifying and reducing the size of the hanging tool while utilizing the advantages of the conventional hanging tool.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a hanging tool according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a state where a gripping claw is locked in a half-open standby state.
FIG. 3 is a cross-sectional view showing a state in which the lock fitting is retracted to the retracted position with the surface treatment material.
FIG. 4 is a cross-sectional view showing a state where a surface treatment material is held.
FIG. 5 is a cross-sectional view showing a hanging tool according to a second embodiment of the present invention.
FIG. 6 is a cross-sectional view showing a state in which a lock fitting is rotated by a lock pin of a gripping claw.
FIG. 7 is a cross-sectional view showing a state in which the gripping claws are locked in a half-open standby state.
FIG. 8 is a cross-sectional view showing a state in which a lock fitting is rotated with a surface-treated material.
FIG. 9 is a cross-sectional view showing a state where a surface treatment material is held.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base frame 2 Holding body 2a The front-end | tip part 3 of a holding body 4 Lock pin 4 Holding claw 5 Connection long hole 6 Connection shaft 7 Operation lever 7a Extension wall 8 of an operation lever Leaf spring (spring member)
9 Lock fitting 9a Arc edge of lock fitting 10 Lock fitting attachment piece 11 Base frame attachment piece 12 Compression coil spring 14 Guide shaft 15 Stopper portion 16 Engaging recess 17 Shaft 18 Tension coil spring 19 Stopper shaft M Surface treatment material

Claims (2)

A holding body fixed to the base frame, a holding claw with a lock pin that is pivotally mounted on the base frame so as to face the tip of the holding body, and a pivot pin pivotally attached to the base frame A suspension device having an operation lever whose tip is connected to the gripping claw and a spring member that normally urges the gripping claw to rotate in the closing direction, on the gripping body, on the tip of the gripping body provided Carlo click fitting to move between a retracted position away from the tip of the forward position and pinching body approaching, while resiliently urging the lock fitting to always forward position direction, the lock fitting to the operating lever provided a stopper portion for regulating the movement in the forward position direction, with rotational operation of the control lever, it is solved regulation lock fitting by the stopper portion, and the movable lock fitting to the advance position, the tip end of the lock fitting it was configured to engage mounting engagement with the lock pin of the clamping claw on the edge Hanger, characterized. A holding body fixed to the base frame, a holding claw with a lock pin that is pivotally mounted on the base frame so as to face the tip of the holding body, and a pivot pin pivotally attached to the base frame A suspension device having an operation lever whose tip is connected to the gripping claw and a spring member that normally urges the gripping claw to rotate in the closing direction, and engages a lock pin of the gripping claw with a base frame A lock fitting that is formed with an engagement recess and maintains a vertical posture is pivotally mounted, and the lower end portion of the lock fitting is always elastically biased toward the gripping claw so that the operation lever can be rotated. A hanging tool characterized in that a lock pin of a gripping claw that rotates in an opening direction is configured to engage with an engagement recess of the lock fitting.

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