JPS6160003B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present applicant has proposed an article hanging conveyance device for an overhead conveyor, in which the article to be conveyed has four supported points on the front, rear, left and right sides, such as the bodies of different types of automobiles such as light trucks and passenger cars. In order to stably support different types of articles with different types of articles, four supported tools for the four supported points of one type of article and four supporting devices for the four supported points of the other type of article are both provided. A hanging carrier has been developed which is provided in such a way that it can be switched freely between working and non-working positions, and the present invention is designed to enable switching between both types of four supports in such a common hanging carrying tool. The object is to be able to carry out the process safely and with a simple structure, and furthermore, with a structure that is advantageous in terms of transportation.

In other words, in most cases, the switching between the four supports is carried out on the moving path of the suspended conveyance device, immediately above the loading point of the hanging conveyance device or immediately below the article unloading point, and in this case, the switching point is Since the switch is naturally placed at a considerably high position from the floor, it is dangerous and extremely difficult for a worker to switch manually from a high place.

Additionally, it is conceivable to provide the hanging conveyor itself with a drive mechanism for changing the posture of the support, but in this case, the above-mentioned drive mechanism should be installed on each of the many hanging conveyors provided on the overhead conveyor. Not only does this have the disadvantage of making the entire equipment expensive and complicated, but hanging transport equipment also has the disadvantages of reduced space, increased load, reduced speed, and
There are also disadvantages such as increased power.

The article support switching device for an overhead conveyor according to the present invention has been developed in view of the above-mentioned circumstances, and its characteristic structure is that two types of four supports provided on a suspended conveyor are A driving mechanism for switching between the two types of four supports for switching operations is installed at a midway point in the movement path of the suspended conveyor, and its functions and effects are as follows.

That is, the two types of four supports provided on the suspended conveyance device are switched in a reverse manner by actuating a reverse switching drive mechanism installed in the middle of the movement path of the suspended conveyance device. There is.

Therefore, even when the suspended conveyance tool passes through a high place, the danger of having to switch the support device from a high place can be avoided, and moreover, it is possible to avoid the danger of having to switch the support device from a high place. Since it can be used commonly for switching the support in the hanging carrier, the configuration can be simplified, and furthermore, there is no need to provide a drive mechanism for changing the posture in the hanging carrier itself. Therefore, the suspended conveyance device does not cause space reduction, load increase, speed decrease, or power increase, which is advantageous in terms of conveyance, and it is safe and has a simple structure. Furthermore, it has become possible to perform support switching operations with a structure that is advantageous in terms of transportation.

Embodiments of the present invention will be described below based on the drawings.

A and B are different types of articles in which the four supported points on the front, rear, left and right sides are different from each other in the front and rear directions and in the vertical direction, and representative examples thereof include the body of a regular passenger car and the body of a regular freight car. There is. The four supported points of article A are lower than the four supported points of article B, and the distance between the front and rear supported points of article A is shorter than that of article B.

1FR, 1FL, 1RR, and 1RL are supports for article A, and 2FR, 2FL, 2RR, and 2RL are front right, front left, rear right, and rear left supports for article B, respectively. In the following, when referring to each of the four supports collectively, they may be represented by numerals 1 and 2, respectively. Each of the four supports 1 and 2 described above is attached to a common hanging conveyor 3. The hanging conveyor 3 has an upper frame 6 which is suspended and supported by rollers 5, 5, etc. rolling along the rails 4, 4, and an upper frame 6, which is attached to the left and right sides of the frame 6, for transferring goods. Its main components include hanger arms 7, 7 which extend downward while being pivotally supported around the front and rear axes, and lower frames 8, 8 which are long in the front and back and which are fixed to the arms 7, 7, respectively. There is. The right lower frame 8 has a total of four right supports 1FR, 1RR, 2FR, 2RR, and the left lower frame 8 has a total of four left supports 1FL,
1RL, 2FL, and 2RL are attached respectively.

A total of four supports on the right side and a total of four supports on the left side are symmetrical including their form with respect to the lower frame. In the following, the specific configuration of only the one on the right will be explained, and the explanation of the one on the left will be omitted since it is the same as the one on the right.

The support 1FR is located near the front end of the frame 8 around the front-rear axis _O1 , the support 2FR is located near the front end of the frame 8 around the left-right axis _O2 , and the two rear supports 1RR and 2RR are They are pivotally connected so that they can be switched between an active position and a non-active position by swinging around the same longitudinal axis _O3 .

The supports 1FR and 1RR and the supports 2FR and 2RR are in the same or substantially the same horizontal plane and on the same or substantially the same straight line in the front-rear direction when they are in the working position. When hanging article A and when hanging article B, the arms 7, 7 maintain a vertical or almost vertical posture, in other words, the center of gravity of article A and the center of gravity of article B are both aligned with the conveyor. In order to suspend and support each article A, B in a stable posture at or near a predetermined position based on reference point 3, the front and rear supports 1FR, 1RR when in the working posture,
The relative positional relationship of the supports 2FR and 2RR with respect to the frame 8 is determined. Also, the two front supports 1FR and 2FR, and the two rear supports 1RR, 2.
RRs are such that when one support is in the working position and the other is in the non-working position, and when both supports are in the non-working position, the support in the other working position controls the predetermined article supporting action. The positions of the oscillating axes O ₁ , O ₂ , O ₃ and
The length, shape, etc. of the arm section from the axis to the support are determined. Support 1FR swings approximately 90 degrees, support 2FR swings approximately 180 degrees, and supports 1RR and 2RR swing approximately 45 degrees. The supports 1FR, 2FR are fixed by simple abutment between their arms and the frame 8 in both their working and non-working positions. Swing axis
Of the supports 1RR and 2RR that share O ₃ , the former is at the top. It is also possible for both supports 1RR and 2RR to come into contact with each other, and fixation of the working position of the support 1RR and the non-working position of the support 2RR is achieved by simply abutting the arm part of the lower support 2RR with the frame 8, respectively. The fixation of the non-working position of the support 1RR and the working position of the support 2RR is controlled by the axis O ₃
A stopper 9 pivoted to the frame ₈ around an axis O4 parallel to the lower support 2 is located in front of the frame 8.
It is controlled by engaging with the notch 10 in the arm portion of the RR. In Figures 2 and 3, 1FR, 2
FR, 1RL is shown in the active position, 2RL is shown in the non-active position, and 2FR is shown in the non-active position in FIG.

In addition, 11 is a driven dock connected to the front end of the upper frame 6 at the center in the left-right width direction.
2 is a power chain having an engagement pin 13 for the dog 11; 14 is a disengagement lever for the dog 11; and 15 is a cam for disengaging the lever 14 of the following conveyor.

Next, the drive mechanism C for switching between the four supports 1 and 2 will be described. Although there are a pair of mechanisms C that are symmetrical on the left and right sides, only one will be explained and the explanation of the other will be omitted.
This mechanism C is a conveyor 3 using a power chain 12.
It is installed on a fixed frame 16 above the floor in the middle of the moving route of the goods A and B and on the upper side of the loading work area.

Reference numeral 17 denotes a swinging arm that switches the support 1FR from a working position to a non-working position, and is forcibly driven by a cylinder 18. Reference numeral 19 denotes a cylinder for switching the support 1FR from a non-working position to a working position. 2
0 is a rotor that chucks and rotates the support 2FR at its base end, and is moved near and far by the cylinder 21. Reference numeral 22 denotes a chuck that holds the hanger arm 7 and prevents it from swinging, and is opened and closed by a cylinder 23. 24 is the two supports 1RL and 2RL that share the axis O ₃ , and the support 1RL
For that, change it from working position to non-working position,
Further, the support 2RL is an arm that simultaneously switches it from a non-working position to a working position, and is driven by a cylinder 25. By this switching, the aforementioned stopper 9 automatically engages with the notch 10. 2
Reference numeral 6 denotes a cylinder that switches the two supports 1RL, 2RL to the opposite state from that described above, and this switching is performed in cooperation with the arm 24 described above. That is, the arm 24 further lifts the support 2RL, the cylinder 26 pushes the weight piece 9a integrated with the stopper 9, and the stopper 9 is pulled out from the notch 10, and then the arm 24 is moved down to lift both the supports 1RL, This is to switch the posture of cylinder 2RL, and after this switching is completed or in parallel with the switching, cylinder 2
Contract 6. At this time, the stopper 9 is kept in a vertical position by being pushed by the support 2RL, but when the support 2RL is moved upward, it is tilted by the weight of the weight piece 9a and automatically engages with the notch 10 as described above. do.

The reverse switching drive mechanism C is program-controlled so that the operations of each element constituting it follow a fixed sequence.

FIG. 7 shows the control mode in blocks. That is, there is a mechanism (circuit) D that determines and detects which of the two types of four supports 1 and 2 is in the working position and which is in the non-working position, and a detection signal of this mechanism D and a position switching command signal. A mechanism (circuit) E is provided to compare the
The comparison mechanism E is configured to transmit a reverse switching operation signal to the drive mechanism C only when the two signals do not match. F is a program control mechanism interposed between the comparison mechanism E and the drive mechanism C.

[Brief explanation of the drawing]

The drawings show an embodiment of the automatic article support switching device for an overhead conveyor according to the present invention, in which FIG. 1 is a side view, FIG. 2 is a front view, and ), Fig. 3 is a plan view, Fig. 4 is a front view including the switching device (as viewed from the line P-P' in Fig. 3), and Figs. 5 and 6 are detailed views of some of the supports. FIG. 7 is a control system block diagram. A, B... Goods, 1FR, 1FL, 1RR, 1RL
...Support, 2FR, 2FL, 2RR, 2RL...Support, 3...Hanging conveyor, C...Reverse switching drive mechanism, D...Discrimination detection mechanism, E...Comparison mechanism.

Claims (1)

[Claims] 1 4 supports 1FR, 1FL, 1RR, 1RL for the 4 supported points front, rear, left and right of article A of one type and 4 supports 2FR, 2FL, 2RR, 2RL for the 4 supported points front, rear, left and right of another type of article B Each of the above-mentioned supports 1 in the hanging conveyance tool 3 is provided in such a manner that both of the supporting tools 1 and 2 are provided in a manner that they can be freely switched between a working position and a non-working position.
FR, 1FL, 1RR, 1RL and 2FR, 2FL, 2
This is a switching device that switches between RR and 2RL in the middle of the movement path of the hanging conveyance tool 3, and the drive mechanism C for switching between the two types of four supports is switched between the two kinds of four supports. An article support switching device for an overhead conveyor installed in the middle.