JPH081168Y2 - Power and free conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a power and free conveyor, for example,
The present invention relates to a conveyor that conveys a vehicle body immersed in a liquid in an electrolytic cell while inclining it so that air cannot be trapped inside the coating line of an automobile factory.

2. Description of the Related Art As a conveyor of this type, as disclosed in Japanese Utility Model Laid-Open No. 1-77566, a load bar passed to a free trolley before and after traveling on a free rail, and a connection mechanism to the load bar. The hanger is swingably connected by the hanger, the hanger swing rollers before and after the hanger are attached to the hanger so as to be positioned in front of and behind the swing center of the hanger, and the roller is free at the required location on the conveyor transport path. It consists of guide rails that guide the rails toward and away from each other, and the connecting mechanism is provided so as to hang down on the load bar, and two arcuate elongated holes extending in the vertical direction are spaced apart in the front-rear direction. Left and right hanger suspension plates that face each other in the same way, and the hanger can be fitted into two long holes on the same side in the front and back, respectively. Those and a horizontal connecting shaft of the front and rear provided in earthenware pots are known.

Further, as another conveyor, as disclosed in Japanese Utility Model Laid-Open No. 59-32565, a load bar passed to a free trolley before and after traveling on a free rail and a horizontal direction in the load bar A hanger that is swingably connected by a connection shaft, a hanger swing roller that is attached to the hanger with a space on either side of the connection shaft from the front and back of the connection shaft, and a roller that is free at required points on the conveyor transport path. It consists of a guide rail that guides it toward and away from the rail, and the hanger has a hanger frame that is fixed to the upper ends of the front and rear hanger arms.The hanger frame moves as the hanger swings. It is known that the load bar undulates in a suspended state from the load bar.

Problems to be Solved by the Invention In the former conveyor, the hanger is inclined by guiding the front and rear rollers with the guide rails.
Although the hanger can be tilted stably, there is a problem that the equipment cost of the conveyor is high because the connecting mechanism is complicated and a large number of rollers are required.

Further, in the latter conveyor, the load of the hanger acts on the connecting shaft in any case of the undulation of the hanger frame, so that there is a problem in durability of the connecting shaft.

An object of the present invention is to solve the above problems and provide a power-and-free conveyor having a simple structure, low equipment cost, and durability.

Means for Solving the Problems A power and free conveyor according to the present invention is connected to a load bar which is passed over a free trolley before and after traveling on a free rail and is swingably connected to the load bar by a horizontal horizontal connecting shaft. The hanger that is mounted on the hanger and the hanger swinging roller that is attached to the hanger with a space on either side of the hanger from the connecting shaft, and the roller is moved closer to and away from the free rail at a required point on the conveyor transport path. The hanger has a hanger frame that is fastened to the upper ends of the front and rear hanger arms, and the hanger frame undulates with respect to the load bar as the hanger swings. It is designed to be overlaid on the load bar when lying down.

The power and free conveyor according to the present invention includes a load bar passed to a free trolley before and after traveling on a free rail, and a hanger that is swingably connected to the load bar by a horizontal horizontal connecting shaft. , The hanger swing roller mounted on the hanger with a space on either side of the connecting shaft from the front and rear of the connecting shaft, and the roller approaching the free rail at the required location on the conveyor transport path.
Since the guide rail is provided to guide the hanger away from each other, the hanger is swung by the rollers on either side of the connecting shaft.

Further, the hanger has a hanger frame which is fastened to the upper ends of the front and rear hanger arms, and the hanger frame undulates with the swing of the hanger and is superposed on the load bar when the hanger is down. Since the load bar receives the entire load of the hanger when the hanger frame is laid down, the load of the hanger does not act on the connecting shaft when the hanger frame is laid down.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In this specification, "front and rear" refers to the side on which the trolley advances (the direction indicated by the arrow in FIGS. 1 and 2), and the opposite side to the rear, with reference to the moving direction of the trolley.
Left and right are referred to as left and right when facing forward.

The power and free conveyor is a power rail 11,
Free rail 12 arranged under this and both rails 11,1
The power trolley 14 mounted on the drive chain 13 arranged between the two and traveling on the power rail 11, the leading free trolley 15 traveling on the free rail 12, the front intermediate free trolley 16, the rear intermediate free trolley 17, and Rear tail trolley
18 and.

The power trolley 14 has a propeller 19 that protrudes diagonally downward and rearward.
Is installed. Top Free Trolley 15 has a propeller
A tilting dog 21 with which 19 is engaged is provided, and a rear free trolley 18 is provided with a propelling tool pushing cam 22. Of the four free trolleys 15 to 18, two adjacent free trolleys 15 to 18 are connected by a rod 23, respectively. A load bar 25 is suspended from the front intermediate free trolley 16 and the rear intermediate free trolley 17 by a parallel link 24 so as to be swingable in the front-rear direction. The load bar 25 is provided at its front portion with a connecting shaft 26 that extends rotatably through the load bar 25 and extends in the left-right direction. A hanger 27 is swingably attached to the connecting shaft 26.

As shown in detail in FIG. 1, the hanger 27 is a pair of front and rear hanger arms 31 and 32, which are U-shaped when viewed from the rear, and is fixed to the horizontal upper ends of the hanger arms 31 and 32, and is superposed on the load bar 25. The hanger frame 33 is provided with a hanger frame 31, and a connecting member 34 is fixed to the ends of the horizontal parts of the lower ends of the hanger arms 31 and 32.

At the top horizontal part of the front hanger arm 31, the hanger frame
A pair of ears 35 protruding from the left and right sides and projecting diagonally downward are provided, and the tips of these ears 35 are fixed to the connecting shaft 26, so that the hanger 27 can be attached to the load bar 25. Has been fulfilled. Further, two transported object placing bases 36 are provided at the lower end horizontal portions of both the hanger arms 31 and 32.

Of the front and rear hanger arms 31, 32, the rear hanger arm 32
Upper protruding brackets 37 are provided on both the left and right sides of the hugging frame 33 at the upper end horizontal portion thereof. A swing piece 39 is attached to each bracket 37 via a horizontal rotation shaft 38 extending in the left-right direction, and two hanger swing rollers 41 are attached to each swing piece 39. Further, a pair of left and right guide pieces 42 in which the hanger frame 33 is loosely sandwiched from the left and right sides thereof are provided on the load bar 25.

As shown in detail in FIGS. 4 and 5, the bracket
A bearing 43 is provided at 37, and a rotating shaft 38 is supported by the bearing 43. The rocking piece 39 is in the shape of a vertical triangle plate, and is fixed to the rotary shaft 38 at the top thereof. Two rollers
41 are positioned at both ends of the lower edge of the swinging piece 39. Positioned between the rollers 41, the swinging piece 39 is provided with a member 44 having a U-shaped cross section, and a steadying roller 46 is attached to the member 44 via a vertical pin 45. Further, a vertical plate-shaped stopper 47 is provided on the bracket 37, which is located immediately below the rotation shaft 38. When the lower edge of the swing piece 39 contacts the upper end of the stopper 47, the swing range of the swing piece 39 is restricted, and the swing piece 39 is restricted.
It is designed so that 39 does not tilt more than the angle shown by the chain line in FIG.

As shown by a chain line in FIG. 2 and a solid line in FIGS. 6 to 8, a guide rail 51 is provided at a required position in the hanger movement path. The guide rails 51 are arranged on both the left and right sides of the free rail 12 and are formed in a substantially corrugated shape when viewed from the side.

As described above, since the swing piece 39 is suspended from the rotating shaft 38 at the top thereof, even if the swing piece 39 is inclined,
When the rotating shaft 38 is rotatable, the swinging piece 39 hangs down from the rotating shaft 38 by its own weight so that both rollers 41 have the same height as shown by the solid line in FIG. However, if paint or the like adheres to the rotating shaft 38 and the rotating shaft 38 becomes unrotatable, the swinging piece 39 may remain inclined. In such a case, if there is no stopper 47 and the rocking piece 39 is a stopper,
If the roller is tilted more than the angle regulated by 47, the roller
When the roller 41 approaches the guide rail 51, the roller 41 may collide with the starting end portion of the guide rail 51, but the stopper 47 prevents this.

In FIG. 2, the state where the roller 41 is moving on the wave bottom of the guide rail 51 is shown by a solid line.
When 41 approaches the wave head from the wave bottom of the guide rail 51, the roller 41 is pushed up and the hanger 27 is tilted forward around the connecting shaft 26 as shown by the chain line in FIG.

FIG. 6 shows a state in which the vehicle body W is put into the electrolytic solution tank T. In this case, the inclination angle θ1 of the free rail 12 with respect to the liquid surface of the electrolytic solution tank T is a maximum of 30 degrees in terms of equipment, but as described above, the hanger 27 is inclined with respect to the load bar 25 by a predetermined angle θ2. If this is done, the bathing angle of the vehicle body W will increase by the amount of inclination θ2, and
The resistance with respect to the liquid surface of the vehicle body W at the time of entering the tank is reduced, and the vehicle body W is prevented from rising.

FIG. 7 shows a state in which the vehicle body W is immersed in an electrolytic solution tank and conveyed. In this case, by repeatedly swinging the hanger 27 described above, the vehicle body W is swung in the electrolytic solution tank T, and air accumulation in the vehicle body W is eliminated.

FIG. 8 shows a state in which the vehicle body W is taken out of the electrolytic solution tank T. In this case, if the hanger 27 is not inclined with respect to the load bar 25, the vehicle body W exits at an angle equal to the inclination angle θ3 of the free rail 12. Of course, the hanger 27 may be inclined with respect to the load bar 25. Then, the vehicle body W will leave the tank at an angle smaller than the inclination angle θ3 of the free rail 12.

Effect of the Invention According to the present invention, in order to incline the hanger, the rollers only have to be provided on either side of the hanger swing center, either front or back, so that the load bar and the hanger are simply swingably connected. A conveyor that is simple, has a simple structure, and has a low equipment cost is provided.

Furthermore, since the load bar receives the entire load of the hanger when the hanger frame is turned down, the load of the hanger does not act on the connecting shaft when the hanger frame is turned down. A conveyor is provided.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a perspective view of a load bar and a hanger, Fig. 2 is a side view, Fig. 3 is a cross sectional view, and Fig. 4 is an enlarged side view of a roller and its peripheral portion. 5, FIG. 5 is a sectional view taken along the line VV of FIG. 4, and FIGS. 6 to 8 are explanatory views of the transport state. 12 …… Free rail, 16,17 …… Free trolley, 25 ……
Load bar, 26 …… Coupling shaft, 27 …… Hanger, 31,32 ……
Hanger arm, 33 …… Hanger frame, 41 …… Roller,
51 …… Guide rail.

Claims (1)

[Scope of utility model registration request] 1. A load bar 25 passed over free trolleys 16 and 17 before and after traveling on a free rail 12, and a hanger swingably connected to the load bar 25 by a horizontal horizontal connecting shaft 26. 27, a hanger swinging roller 41 mounted on the hanger 27 with a space from the connecting shaft 26 on either side of the front and rear of the connecting shaft 26, and the roller 41 approaching the free rail 12 at a required position on the conveyor transport path. The hanger 27 has a hanger frame 33 that is fastened to the upper ends of the front and rear hanger arms 31 and 32.The hanger frame 33 serves to swing the hanger 27. The power-and-free conveyor is designed so as to be undulated with respect to the load bar 25 and overlapped with the load bar 25 when the load bar 25 is folded down.