JP2009057118A - Carrying attachment turning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carrying attachment turning device constructed to absorb a horizontal load that attachments receive while preventing the flotation of the attachments when three-dimensionally carrying works being supported on hangers by the attachments. <P>SOLUTION: The carrying attachment turning device comprises an attachment arm 120 to both ends of which the plurality of attachments 122, 124 are fixed, a rotating shaft 130 fixed at one end to the attachment arm and supported to be turnable and movable up and down by a bearing 190, a turn block 140 fixed to the other end of the rotating shaft, and an attachment turning and up-and-down lifting mechanism 145 engaged with the turn block for lifting up and down and turning the attachment arm 120. A flotation preventing plate 110 is provided above the turn block 140 in a turnable and insertable manner for preventing the flotation of the attachments 122, 124. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a transfer attachment rotating device for selectively supporting a plurality of types of workpieces on a transfer hanger in a transfer line for transferring a workpiece while supporting the workpiece on a transfer hanger. The present invention relates to a suitable transfer attachment rotating device.

  2. Description of the Related Art Conventionally, there is a transfer line that transports while supporting a workpiece such as an automobile body with a transfer hanger, and a plurality of types of workpieces are mixed in the same line.

In such a transfer line, an attachment arm to which a plurality of types of attachments for fixing the workpiece to the transfer hanger is attached to the transfer hanger side corresponding to a plurality of types of workpieces and provided on the ground side. 2. Description of the Related Art An attachment rotation device for transport that supports a workpiece with an attachment while the attachment arm is lowered after rotating the attachment arm with the attachment rotation raising / lowering mechanism and rotating the attachment arm and selecting a desired attachment is known. (For example, refer to Patent Document 1).
Japanese Patent No. 3557337 (page 3, FIG. 6)

  However, since the conventional attachment rotation device for transfer as described above assumes that the workpiece is transferred only two-dimensionally, that is, only in the horizontal direction, in three-dimensional transfer where there is an inclination in the transfer line. The following issues existed.

  In other words, the attachment arm rotates in a state where it is raised by the attachment rotation raising / lowering mechanism provided on the ground side, and after selecting the desired attachment, the attachment arm is lowered by the spring force or the weight of the attachment arm to lift the attachment arm Was preventing.

  However, during three-dimensional transfer, the axis direction of the lifting and lowering operation of the attachment arm is tilted away from the vertical direction, so that the attachment arm is lifted by vibration and shock during transfer, and the work support by the attachment is removed. Was pointed out.

  Furthermore, a problem has been pointed out that during the three-dimensional transport, a lateral load is applied to the attachment, so that the attachment arm rotates and the support of the workpiece by the attachment is removed.

  Therefore, the technical problem to be solved by the present invention, that is, the object of the present invention is to prevent the attachment from lifting when the work is supported on the hanger with the attachment and transported in three dimensions, and the lateral load received by the attachment. Another object of the present invention is to provide a transport attachment rotating device having a mechanism that absorbs water.

  First, the invention according to claim 1 includes a plurality of attachments each having a shape corresponding to a plurality of types of workpieces, an attachment arm having the attachments fixed at both ends, and one end fixed to the attachment arm. A rotary shaft supported rotatably by a bearing and movable up and down, a turn block fixed to the other end of the rotary shaft, and the attachment arm can be raised and rotated by engaging with the turn block. In the attachment rotation device for transport including the attachment rotation raising / lowering mechanism, the floating plate for preventing the attachment from being lifted is provided so as to be rotatable and inserted above the turn block. It is a thing.

  In addition to the configuration of the transport attachment rotating device according to claim 1, the invention according to claim 2 is characterized in that the buoyancy plate is formed by the tension of a tension spring when the attachment arm is prevented from rising. The problem is further solved by being provided so as to be inserted upward.

  In addition to the configuration of the attachment rotation device for transfer according to claim 1 or 2, the invention according to claim 3 is characterized in that the levitation plate can move the attachment arm when the attachment arm can be raised. The guide roller pivotally supported on the opposite side to the side inserted above the turn block is provided so as to be retracted from the upper side of the turn block by abutting with the floating plate opening guide, It solves the problem further.

  In addition to the configuration of the transfer attachment rotating device according to any one of claims 1 to 3, the invention according to claim 4 is an open state when the attachment arm is raised and is fitted when the attachment arm is lowered. The claw part and the groove part to be in a combined state are provided in the vicinity of the rotation axis of the attachment arm and in the bearing, respectively, thereby further solving the problem.

  The transport attachment rotating device according to the present invention includes a plurality of attachments each having a shape corresponding to a plurality of types of workpieces, an attachment arm having the attachment fixed at both ends, and a bearing having one end fixed to the attachment arm. Rotating shaft that is supported rotatably and vertically movable by means of, a turn block fixed to the other end of the rotating shaft, and the attachment arm can be raised and rotated by engaging with the turn block. By providing an attachment rotation elevating mechanism, even when multiple types of workpieces are mixed in the transfer line, the attachment can be easily replaced without stopping the transfer line for a long time. Not only can the operating rate of the line be improved, but it also supports equipment configurations unique to the present invention. I was able to achieve the special effects described below.

  That is, according to the attachment rotation device for transfer according to the first aspect of the present invention, the floating plate is provided so as to be pivotably inserted above the turn block, thereby preventing the attachment from being lifted during the transfer of the workpiece. Therefore, the safety during the three-dimensional conveyance of the workpiece is improved.

  According to the transport attachment rotating device according to the second aspect, in addition to the effect exerted by the transport attachment rotating device according to the first aspect, the buoyancy plate is caused by the tension of the tension spring when the attachment arm is prevented from rising. Since it is provided so as to be inserted above the turn block, the floating plate located above the turn block is prevented from being inadvertently removed from the position above the turn block. The safety at the time of three-dimensional transport is further improved.

  Further, according to the transport attachment rotating device according to the third aspect, in addition to the effect exerted by the transport attachment rotating device according to the first or second aspect, the floating plate floats when the attachment arm can be raised. The guide roller pivotally supported on the side opposite to the side inserted above the turn block of the stop plate is provided so as to be retracted from the upper side of the turn block by coming into contact with the floating plate release guide. Since the float-stop plate can be retracted from above the turn block without using human hands or special actuators, the burden on the operator can be reduced and the apparatus can be simplified.

  Furthermore, according to the transport attachment rotating device according to claim 4, in addition to the effect exhibited by the transport attachment rotating device according to any one of claims 1 to 3, the transport attachment rotating device is opened when the attachment arm is raised. The claw part and the groove part that are in the fitted state when they are lowered are provided in the vicinity of the rotation axis of the attachment arm and the bearing, respectively, so that the claw part absorbs the lateral load applied to the attachment at the inclined part. Therefore, the safety of the three-dimensional conveyance of the workpiece is further improved.

  The transport attachment rotating device according to the present invention includes a plurality of attachments each having a shape corresponding to a plurality of types of workpieces, an attachment arm in which the attachment is fixed at both ends, and a bearing having one end fixed in the attachment arm. The rotary shaft is supported by the rotary shaft so as to be rotatable and vertically movable, a turn block fixed to the other end of the rotary shaft, and the attachment arm can be lifted and rotated by contacting the turn block. An attachment rotation elevating mechanism, and a detent plate for preventing the attachment from being lifted is provided so as to be rotatable and insertable above the turn block. In the original transport, the attachment can be prevented from lifting and As long as it can absorb transverse loads Chimento receives, manner of its specific implementation, may any be any one.

  Hereinafter, a transfer attachment rotating apparatus according to an embodiment of the present invention will be described with reference to FIGS.

  Here, FIG. 1 is a front view of an automobile body transport hanger equipped with a transport attachment rotating apparatus according to an embodiment of the present invention, and FIG. 2 is a front view of the transport attachment rotating apparatus when the attachment arm can be raised. FIG. 3 is a schematic bottom view in which some members are omitted, and FIG. 3 is a schematic bottom view in which some members of the transport attachment rotating device are shown when the attachment arm is prevented from rising. 4 is a schematic side view taken along line IV-IV in FIG. 3, FIG. 5 is a schematic side view taken along line V-V in FIG. 3, and FIG. 6 is taken along line VI-VI in FIG. It is a schematic side view. Here, the bottom view means a view showing a state in which the apparatus is viewed from below, that is, the front side is the lower side in the vertical direction with respect to the paper surface.

  FIG. 1 is a front view of an automobile body transport hanger 200 equipped with a transport attachment rotating apparatus 100 according to an embodiment of the present invention. In FIG. 1, a portion surrounded by a circle indicates a transport attachment rotating apparatus 100 according to an embodiment of the present invention, and a portion surrounded by a left circle particularly corresponds to FIG. 4.

  The transportation line having the automobile body transportation hanger 200 has a plurality of automobile body transportation hangers 200 arranged in a row, and each automobile body transportation hanger 200 selects two kinds of automobile bodies having different sizes as workpieces. The vehicle body is mounted on the vehicle body hanger 200, and the vehicle body supported by the vehicle body transport hanger 200 is subjected to predetermined work, for example, PVC (vinyl chloride) coating, and the vehicle body transport hanger 200 discharged from the work station It has an unloading station for removing the body, and a switching station for switching attachments according to the type of automobile body supplied at the supply station. Accordingly, two types of automobile bodies having different sizes are mixedly conveyed on the conveyance line. Therefore, as shown in FIG. 4, the vehicle body transport hanger 200 has attachments 122 and 124 having shapes corresponding to two types of vehicle bodies, and attachments in which these attachments 122 and 124 are fixed at both ends. One end of the arm 120 is fixed to the attachment arm 120, and the rotary shaft 130 is supported by the bearing 190 so as to be rotatable and vertically movable. The turn block 140 is fixed to the other end of the rotary shaft 130. And a body receiving mechanism having a suspension plate 110 that prevents the attachments 122 and 124 from being lifted.

  On the other hand, in the supply station, the unloading station, and the switching station, on the ground side facing the body receiving mechanism, the attachment rotating / lifting mechanism that engages with the turn block 140 of the body receiving mechanism to raise and rotate the attachment arm 120. 145 is installed. As shown in FIG. 4, three protrusions 144 are concentrically arranged on the upper surface of the attachment rotation raising / lowering mechanism 145 at equal intervals, while the protrusion 144 is formed on the lower surface of the turn block 140. And an insertion hole 142 to be fitted. Then, the attachment rotation elevating mechanism 145 is raised and slowly rotated to find a position where the projection 144 and the insertion hole 142 are fitted, and the turn block 140 and the attachment rotation elevating mechanism 145 are engaged. Further, when the attachment rotation raising / lowering mechanism 145 installed on the ground side is lowered, the attachment arm 120 is lowered by its own weight, and is in a state as shown in FIG.

  Next, the mechanism and operation of the floating plate 110, which is one of the main components of the present invention, will be described. The suspension plate 110 is pivotally supported by a suspension plate rotating shaft 115 on a suspension plate support frame 192 (see FIG. 4) screwed to a bearing 190, as shown in FIGS. When the attachment arm 120 is prevented from rising, that is, when the automobile body is transported, the anti-floating plate 110 rotates about the anti-floating plate rotating shaft 115 by the tension of the tension spring 160 as shown in FIG. One end of the floating plate 110 is inserted above the turn block 140. As a result, even when the vehicle body transport hanger 200 passes through the inclined portion, the lift of the turn block 140 is prevented by the float-stop plate 110. Therefore, the attachment arm 120 does not rise and rotate, and the attachment 122 does not come off the automobile body. Further, as shown in FIG. 4, a slight gap G is provided between the upper surface of the turn block 140 and the contact surface of the floating plate 110, so that the floating plate 110 can be smoothly turned into the turn block 140. It is made to insert above.

  On the other hand, when the attachment arm 120 can be raised, that is, when the attachments 122 and 124 are exchanged, as shown in FIG. 2, the guide roller 170 pivotally supported on the other end of the floating plate 110 is moved to the ground side of the transport line. By coming into contact with the installed anti-floating plate opening guide 180, the anti-floating plate 110 rotates around the anti-floating plate rotating shaft 115 and retracts from above the turn block 140. As a result, the attachment rotating / raising mechanism 145 raises the attachment arm 120 to release the fitting state between a claw 150 provided near the rotation shaft 130 of the attachment arm 120 and a groove 195 provided in the bearing 190, which will be described later. However, it is possible to exchange the attachment 122 and the attachment 124 by rotating the attachment arm 120 (see FIG. 6).

  As shown in FIG. 4, each of the attachment 122 and the attachment 124 has a shape that engages with an attachment receiving portion of an automobile body of a different vehicle type, and the distance from the rotating shaft 130 is adjusted in accordance with the vehicle width. ing. In the present embodiment, the three claw portions 150 are arranged concentrically in the vicinity of the rotation shaft 130 of the attachment arm 120 at equal intervals, that is, at a central angle of 120 °. The bearing 190 is provided with a groove portion 195 that fits with the claw portions 150. Therefore, the attachment arm 120 can be rotated by 120 °. When the attachment arm 120 is rotated 120 ° clockwise from the state shown in FIG. 2, the attachment 122 is detached from the transport line, and the attachment 124 is positioned on the transport line. In the present embodiment, the shape of the attachment arm 120 is made substantially U-shaped to correspond to two types of automobile bodies, but the shape of the attachment arm 120 extends in three directions with the central angle being 120 °. As a star shape, it is possible to cope with three types of automobile bodies by fixing an attachment to the tip of each arm. 2 and 3, the illustration of the bearing 190 existing between the turn block 140 and the attachment arm 120 is omitted, and the claw 150 that fits into the groove 195 provided in the bearing 190 is depicted by a dotted line. is doing.

  Furthermore, the shape and function of the claw portion 150 and the groove portion 195 that receive a lateral load generated when the automobile body transport hanger 200 passes through the inclined portion will be described with reference to FIGS. 5 and 6. As described above, FIG. 5 is a schematic side view taken along line VV in FIG. 3, and FIG. 6 is a schematic side view taken along line VI-VI in FIG. 5 and 6 omit the description of the floating plate 110 described in FIGS. 3 and 2, and the bearing 190 and the attachment rotation elevating mechanism 145 that are not described in FIGS. 3 and 2. It is described.

  As shown in FIG. 5, when the attachment rotation raising / lowering mechanism 145 is lowered, the attachment arm 120 is lowered, and the claw portion 150 fixed to the vicinity of the rotation shaft 130 of the attachment arm 120 is provided on the bearing 190. The groove portion 195 is fitted. The nail | claw part 150 has the shape where the front-end | tip part was parallel and the base expanded. And the groove part 195 has a shape which the nail | claw part 150 fits. By adopting such a shape, when the attachment arm 120 is lowered, the opening of the groove 195 spreads in a mortar shape even if the positions of the claw 150 and the groove 195 are slightly shifted. The tip is guided by the mortar-shaped inclined surface of the opening of the groove 195, and the claw 150 and the groove 195 are smoothly fitted. Further, by increasing the length of the parallel portion of the tip portion of the claw portion 150, that is, the length L (see FIG. 5) of the engagement portion between the claw portion 150 and the groove portion 195, the vibration and the like are added during the conveyance. Even if the gap G is lifted by the gap G (see FIG. 4) between the stop plate 110 and the turn block 140, the fitting state between the claw portion 150 and the groove portion 195 is not released, and the conveyance is performed without any trouble. Therefore, it is particularly preferable to set so that L> G.

  On the other hand, as shown in FIG. 6, the attachment rotation elevating mechanism 145 is raised, the attachment rotation elevating mechanism 145 and the turn block 140 are engaged, the turn block 140 is pushed up, and the attachment arm 120 is raised via the rotation shaft 130. By doing so, the engagement between the claw portion 150 and the groove portion 195 is released, and an open state is established. By rotating the attachment rotation raising / lowering mechanism 145 in this state, the attachment 122 and the attachment 124 can be exchanged. The drive source for moving the attachment rotation raising / lowering mechanism 145 up and down is not particularly limited, and an electric motor, a hydraulic cylinder, or the like can be used.

  As described above, in the transport attachment rotating apparatus 100 according to the present embodiment, even when the three-dimensional transport having an inclined portion is performed in the middle of the transport line, the lift-off plate 110 ensures that the attachments 122 and 124 are lifted. In addition, since the claw portion 150 absorbs the lateral load applied to the attachments 122 and 124 during the conveyance of the inclined portion, the effect is enormous, such that highly safe three-dimensional conveyance can be achieved simply and simply.

The front view of the hanger for motor vehicle body carrying the attachment rotating device for conveyance of the present invention. The schematic bottom view of the attachment rotation apparatus for conveyance at the time of raising. The schematic bottom view of the attachment rotation apparatus for conveyance at the time of a raise prevention. The schematic side view in the IV-IV line of the attachment rotation apparatus for conveyance shown in FIG. The schematic side view in the VV line of the attachment rotation apparatus for conveyance shown in FIG. The schematic side view in the VI-VI line of the attachment rotation apparatus for conveyance shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Transfer attachment rotating device 110 ... Lifting plate 115 ... Lifting plate rotating shaft 120 ... Attachment arm 122, 124 ... Attachment 130 ... Rotating shaft 140 ... Turn block 142 ... Insertion hole 144 ... Projection part 145 ... Attachment rotation elevating mechanism 150 ... Claw part 160 ... Tension spring 170 ... Guide roller 180 ... Flotation plate opening guide 190 · Bearing 192 · · · Floating plate support frame 195 · · · Groove portion 200 · · · Body hanger for automobiles

Claims (4)

A plurality of attachments each having a shape corresponding to a plurality of types of workpieces, an attachment arm in which the attachment is fixed at both ends, and one end of the attachment arm is fixed in a pivotable and vertically movable manner by a bearing For transportation comprising a supported rotating shaft, a turn block fixed to the other end of the rotating shaft, and an attachment rotating and raising / lowering mechanism that can be engaged with the turn block to lift and rotate the attachment arm. In the attachment rotating device,
An attachment rotation device for transporting, characterized in that a suspension plate for preventing the attachment from being lifted is provided so as to be rotatable and inserted above the turn block.   2. The transport attachment rotating device according to claim 1, wherein the floating plate is provided so as to be inserted above the turn block by tension of a tension spring when the attachment arm is prevented from rising.   A guide roller pivotally supported on the side opposite to the side inserted above the turn block of the buoyancy plate when the buoyancy plate can be lifted by the attachment arm abuts against the buoyancy plate release guide, The transport attachment rotation device according to claim 1 or 2, wherein the rotation device is retracted from above the turn block.   The claw portion and the groove portion that are in an open state when the attachment arm is raised and are in a fitted state when the attachment arm is lowered are provided in the vicinity of the rotation axis of the attachment arm and in the bearing, respectively. The attachment rotation device for conveyance according to any one of claims 1 to 3.

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