JPH08204Y2 - Automatic engagement / disengagement device for trolley carrier chain conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to an automatic engagement / disengagement device for a carriage transport chain conveyor, which is particularly suitable for use in a transfer section between main conveyors.

"Prior Art" Conventionally, a feeder chain conveyor used for a transfer portion between main conveyors has a buffer function, and an engagement / disengagement device for the carriage has a one-side pusher structure. Then, a fixed stopper is provided to secure the stop position of the carriage at the end of the conveyance, and the carriage is stopped by applying the carriage to the fixed stopper.

However, this type of chain conveyor for the feeder is operated at a high speed of about 20 meters per minute, so the impact when the carriage collides with the fixed stopper at the end of the conveyance is extremely large. There is a problem that it causes deformation of the trolley frame and noise. Moreover, the asphalt sheet may be displaced in the sealing process.

In order to eliminate the impact at the end of conveyance, slow start / slow stop control should be used to drive the chain conveyor, but the conventional one-sided pusher structure cannot decelerate the trolley, which makes full use of its function. Can not. Therefore, it is conceivable to use a two-pinching type engagement / disengagement device.
The conventional both-side clamping type engagement and disengagement device has a complicated structure using a special power source only for capturing and disengaging the carriage,
There is a problem that it is too expensive to use for such a feeder conveyor.

The present invention has been made in order to solve the above-mentioned problems, and enables slow start and slow stop control in a feeder chain conveyor, etc., and has a simple structure that does not require a separate power source. An object is to provide an automatic engagement / disengagement device for a chain conveyor.

[Means for Solving the Problems] The automatic engagement / disengagement device for a carriage carrier chain conveyor according to the present invention for achieving the above object is guided by a straight track provided in a main body frame unit and pulled by a chain. In the automatic engagement / disengagement device of the carriage carrier chain conveyor for carrying the carriage in one direction from the backward end position to the forward end position by engaging and disengaging the carriage and the attachment provided on the carriage, A carriage is rotatably supported by the base plate connected to the chain, a pusher provided on the base plate and capable of contacting the attachment from the rear, and a forward position of the pusher on the base plate so as to be upright in a locked state. In the unlocked state, the stock keeps its posture and turns to the forward leaning posture due to its own weight. A link plate rotatably supported by the base plate, and in a free state, the front end abutting against the stopper is lifted by its own weight to unlock the stopper, and the link plate is attached to the rear end of the link plate. A guide roller that is configured by a guide roller provided in a horizontal direction, guides the guide roller to the main body frame unit at an intermediate position excluding the forward end position, and restricts the guide roller to the height position of the guide roller; Provided in the vicinity of the backward end position, the front end of the link plate is lowered to hold the stopper in the upright posture locked state only when the carriage is pulled from the backward end position toward the forward end position. And a swing guide for guiding the guide roller onto the profile guide.

[Operation] In the automatic engagement / disengagement device of the carriage transport chain conveyor configured as described above, the stopper provided on the carriage is in the upright posture in the locked state or the forward leaning posture in the unlocked state, and the rear end of the link plate is It is controlled by the position of the guide roller provided in the. Further, the position of the guide roller is controlled by a follower guide and a swing guide provided on the body frame unit. Then, when the carriage is pulled from the backward end position toward the forward end position, the guide roller travels on the guide that must not move up the swing guide,
The stopper is locked by the front end of the link plate lowered by swinging and is held in an upright posture. In this locked state, the attachment provided on the carriage is sandwiched between the pusher and the stopper, and the speed of the carriage can be changed according to the speed of the chain pulling the carriage.

On the other hand, immediately before the forward end position, the guide roller provided at the rear end of the link plate is free from the follower guide, and the front end of the link plate rises due to its own weight, so that the stopper is also free. When the carriage is turned, the carriage is tilted to the unlocked state, the engagement between the carriage and the attachment is automatically released, and the carriage can freely move forward.

"Example" FIG. 5 is a plan view showing an outline of a conveyor system. A roller conveyor 2 is arranged beside a main conveyor 1 that constitutes a vehicle body coating line, and an empty carriage 3 is supplied onto the roller conveyor 2. A chain conveyor 4 is arranged between the roller conveyor 2 and the main conveyor 1. The chain conveyor 4 moves the carriage 5 back and forth by a chain, and the carriage 5 engages and disengages with the attachment 6 provided on the bottom surface of the carriage 3 to move the carriage 3 to the roller conveyor 2
From the main conveyor 1 to the main conveyor 1. A fixed stopper 7 formed of a rubber block is provided on the main conveyor 1 in order to regulate the stop position of the carriage 3 conveyed by the chain conveyor 4.

FIG. 1 shows a carriage 5 reciprocally driven by a chain 8.
And FIG. 3 is a sectional view taken along line III-III in FIG. Incidentally, FIG. 3 also shows the main body frame unit 30 of the chain conveyor. The main body of the carriage 5 is composed of two base plates 11 and 11 'and a support plate 12, and the support plate 12 is sandwiched between the two base plates 11 and 11' and welded to each other so that the two 11 and 12 are integrated. The support plate 12 is provided with traveling rollers 13 and 13 'protruding leftward and rightward, and the drive chain 8 is coupled to the lower protruding portion 12A.

Horizontal axis 1 provided between two base plates 11 and 11 '
Pusher 16 is supported by 5. The pusher 16 projects vertically above the base plate 11 and can come into contact with the attachment 6 of the carriage 3 from the rear. Pusher 16
Cannot rotate further clockwise from the position shown in the drawing, but is rotatable counterclockwise. A stopper 17 is arranged in front of the pusher 16. Stopper
17 is rotatably supported by a horizontal shaft 18 provided between the two base plates 11 and 11 '. The stopper 17 has an asymmetric shape with respect to the horizontal axis 18 and has a weight portion 17A. Therefore, the stopper 17 is biased in the counterclockwise direction by the rotational force due to the weight of the weight portion 17A in the upright posture shown in FIG.

The upright posture or the forward leaning posture of the stopper 17 is restricted by the link plate 20. The link plate 20 is a member that is swingably supported by a horizontal shaft 19 provided between the two base plates 11 and 11 ', and the front end of the link plate 20 abuts the stopper 17 so that the link plate 20 moves in the counterclockwise direction. The rotation is locked so that the stopper 17 cannot be rotated counterclockwise. A shaft 21 is horizontally planted at the other end of the link plate 20, and projects laterally from an elongated hole 23 provided in the base plate 11. A guide roller 22 is rotatably supported on the shaft 21. Therefore, the horizontal axis of the link plate 20
The swinging position around 19 is controlled by the vertical position of the guide roller 22. Link plate 20
Is formed such that the portion on the right side of the drawing around the horizontal axis 19 is heavier than the portion on the left side of the drawing. Therefore, the link plate 20 is biased clockwise by its own weight.

Therefore, in the free state, as shown in FIG. 2, the link plate 20 rotates clockwise and the guide roller 22 moves into the elongated hole 23.
The stopper 17 is unlocked by lowering to the position of the lower end and raising the front end, and rotates in the counterclockwise direction to the forward tilted posture. As shown in FIG. 1, the link plate 20 rotates counterclockwise to lower the front end by lifting the guide roller 22 against the biasing force due to its own weight, and the stopper 17 is held in the upright posture and locked state. .

As shown in FIG. 3, the carriage 5 configured as described above is incorporated in the main body frame unit 30 and is reciprocally driven by being pulled by the drive chain 8. This time,
The traveling roller 13 rolls on a liner 39 of a flat traveling rail 31 forming a linear track provided on the main body frame unit 30, and guides the carriage 5 in a linear direction. Further, the guide roller 22 rolls on the profile guide 32 and the liner 39 provided on the main body frame unit 30, and the height position of the profile roller 32 is controlled by the height of the profile guide 32.

FIG. 4 is a vertical sectional view showing a part of the follower guide 32.
The body frame unit 30 has a notch 33 near the forward end position.
And a swinging guide 35 which is provided near the retracted end and is swingable by a horizontal shaft 34, and a swinging lid 37 which is also swingable by a horizontal shaft 36.
The rocking guide 35 has a liner 39 at the rear end due to its horizontal position and its own weight.
It is swingable between a tilted posture of about 30 degrees lowered. In addition, the swinging lid 37 has its front end swinging guide in the free state.
It is flush with the upper surface of the guide 32 when it abuts on the guide 35.

Based on the above configuration, the transport operation will be described with reference to FIG. When the carriage 5 is at the backward end (4th
P1), the guide roller 22 is in a free state, and falls on the lower end of the long hole 23 and is on the liner 39. For this reason, the stopper 17 is in the unlocked state of the forward tilting posture as shown in FIG. When the carriage 5 starts to move forward by the drive chain 8, the pusher 16 comes into contact with the attachment 6 of the carriage 3 and presses the attachment 66 to start the carriage of the carriage 3. When the carriage 5 starts to move forward, the guide roller 22
Comes into contact with the upper surface of the swing guide 35 and climbs up the slope of the swing guide 35 (P2 in FIG. 4). As the guide roller 22 climbs up the slope of the rocking guide 35, the guide roller 22 is gradually pushed upward, the link plate 20 is rotated counterclockwise, and the stopper 17 is gradually rotated clockwise to make it upright. . When the guide roller 22 is guided on the follower guide 32 (P3 in FIG. 4), the stopper 17 is locked by the front end of the link plate 20 and is held in the upright posture as shown in FIG. As a result, the attachment 6 of the carriage 3 is sandwiched between the attachment 6 and the pusher 16. The drive chain 8 gradually accelerates the carriage 5 by the slow start control to run the carriage 5, and conveys the carriage 3 at a speed of 20 meters or more per minute. Eventually, when the carriage 5 approaches the forward end position (fourth
P4), the drive chain 8 is gradually decelerated by the slow stop control. At this time, the carriage 3 tries to move further due to inertia, but the attachment 6 contacts the stopper 17 and the carriage 3 is also decelerated. Therefore, near the forward end (P4 in Fig. 4)
Then, the carriage 3 is sufficiently decelerated. When the carriage 5 arrives at the forward end, the guide roller 22 falls from the notch 33 of the follower guide 32 and becomes free (Fig. 4, P5, P).
6). Therefore, the link plate 20 rotates clockwise due to the imbalance of weight, and the guide roller 22 is dropped onto the liner 39 near the lower end of the elongated hole 23. Further, the stopper 17 rotates counterclockwise due to the weight of the weight portion 17A,
The posture is as shown in the figure. Therefore, the attachment 6 of the trolley 3 can pass over the inverted stopper 17, the trolley 3 continues to move forward at a slightly reduced speed, and comes into contact with the fixed stopper 7 so that the trolley 3 on the main conveyor 1 is moved. The position is decided. When the drive direction of the drive chain 8 is reversed and the carriage 5 moves backward (see P7, P in FIG. 4).
8) The guide roller 22 passes under the following guide 32. Then, the guide roller 22 swings and guides near the backward end.
It abuts the lower surface of 35 (P9 in Fig. 4) and pushes up the swing guide 35 to return to the retracted end position (P1 in Fig. 4).

In this way, the attachment 6 of the carriage 3 is attached to the carriage 5
Since the pusher 16 and the stopper 17 catch and convey the sheet, the deceleration by the slow stop control can be fully utilized, and the carriage does not collide with the fixed stopper 7 of the main conveyor 1 at a high speed.

When the carriage 3 is not at the backward end position (P1) but at the intermediate position (P3) at the start of conveyance, the stopper 17 holds the attachment 6 in an upright posture. In this case, as shown in FIG. 1, since the lower right end surface of the stopper 17 is only pressed by the front end of the link plate 20, the stopper 17 is locked in the counterclockwise direction so as not to rotate, but the timepiece does not rotate. It can rotate in any direction. For this reason, when the back surface of the stopper 17 comes into contact with the attachment 6 as the carriage 5 advances, the stopper 17 rotates clockwise against the biasing force of the weight portion 17A and falls to the rear side. Can be inserted between the pusher 16 and the stopper 17.

[Advantages of the Invention] The present invention has the above-described structure, and the stopper provided on the carriage is in the upright posture in the locked state or in the forward leaning posture in the unlocked state. Controlled by. Further, the position of the guide roller is controlled by a follower guide and a swing guide provided on the body frame unit. When the carriage is pulled from the backward end position toward the forward end position,
The guide roller moves up the swing guide and travels on the follower guide, and the stopper is locked by the front end of the link plate lowered by the swing to be held in the upright posture. In this locked state, the attachment provided on the carriage is sandwiched between the pusher and the stopper, and the speed of the carriage can be changed according to the speed of the chain pulling the carriage. For this reason, it is possible to increase the intermediate conveyance speed by fully utilizing the slow stop control of the chain drive device.

Further, immediately before the forward end position, the guide roller is free from the follower guide and is in a free state.The link plate and the stopper rotate due to their own weights, the stopper is in the forward tilted posture and the unlocked state, and the carriage and the attachment are engaged. Since the carriage can be automatically released and the carriage can freely move forward, slowing down the transport speed by the slow stop control of the chain drive device eliminates the deformation and noise of the carriage frame due to the impact when stopping the carriage. You can

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a front view of a carriage in which a stopper is upright, FIG. 2 is a front view in which a stopper is upright, and FIG. 3 is III- of FIG. II
FIG. 4 is a horizontal cross-sectional view of the chain conveyor shown in a cross section along line I, FIG. 4 is a vertical cross-sectional view showing a tracing guide, and FIG. 3 ... Carriage, 4 ... Chain conveyor, 5 ... Carriage, 6 ... Attachment, 8 ... Chain, 11, 11 '...
… Base plate, 16… Pusher, 17… Stopper,
20 …… link plate, 22 …… guide roller, 30 …… main body frame unit, 31 …… travel rail (straight track),
32 …… A follower guide, 35 …… A swing guide.

Claims (1)

[Scope of utility model registration request] 1. A carriage guided by a linear track provided in a main body frame unit and reciprocally moved by being pulled by a chain and an attachment provided in a carriage engage and disengage, so that the carriage is at a backward end position. In a device for automatically engaging and disengaging a trolley carrier chain conveyor that conveys in one direction from a forward end position to a forward end position, the carriage is provided on the base plate connected to the chain, and the attachment is provided on the base plate and is capable of abutting from the rear from the rear. The pusher and a stopper rotatably supported by the base plate at a position in front of the pusher are held in an upright posture in the locked state, and in the unlocked state, they are pivoted to the forward leaning posture by their own weight, and are rocked by the base plate. Before being abutted against the stopper by its own weight, it is movably supported. It is composed of a link plate whose end is lifted to unlock the stopper, and a guide roller which is horizontally provided at the rear end of the link plate. The main frame unit excludes the forward end position. A guide that guides the guide roller at an intermediate position and regulates the height position of the guide roller, and a carriage that is provided in the vicinity of the retreat end position and that pulls the carriage from the retreat end position toward the forward end position. Only in this case, a swing guide for guiding the guide roller onto the profile guide is provided so that the front end of the link plate is lowered and the stopper is held in the locked state of the upright posture. An automatic engagement / disengagement device for a carriage transport chain conveyor.