JP3560013B2 - Slat conveyor for vehicle body transportation - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a slat conveyor which seats and supports an automobile body and transports the vehicle body, and more particularly to a slat conveyor which can transport the automobile body in a stable state.
[0002]
[Prior art]
In the assembly line of an automobile, a slat conveyor is often used to transport an automobile body to each process. The slat conveyor is a conveyor in which horizontal slats (slits) are arranged in a line on an endless chain. In addition, in order to secure a passage for the worker on the assembly line, the worker may be transported overhead of the worker before entering the work area. When the vehicle body being transported overhead is transferred to the slat conveyor, a lowering device that lifts and lowers the vehicle body while supporting the lower surface of the vehicle body from both sides is used.
[0003]
FIG. 10 shows a conventional slat conveyor 100, in which (a) is a plan view and (b) is a front view. In the slat conveyor 100, a pair of receiving members 102, 102, 102, 102 are arranged on the two slats 101, 101 in the transport direction, respectively, with a space between the plurality of slats 101. Then, the slat conveyor 100 seats and supports the lower surface of the vehicle body B with four receiving members 102, 102, 102, 102 and conveys it. During transportation, the worker works from outside the vehicle body B or enters the vehicle body B. As shown in FIG. 10 (b), the upper side of the circulating slat conveyor 100 is a working section 100a for performing the work of each step, and the lower side is a return section 100b for not performing the work.
[0004]
Elevating means 105 for transferring the vehicle body B conveyed from overhead to the slat conveyor 100 includes elevating members 103, 103 arranged on both sides of the slat conveyor 100, a chain 104 connected to the elevating member 103, a driving source (Not shown) and a column (not shown) for supporting the elevating member 103. The elevating members 103, 103 seat and support the lower surface of the vehicle body B, and move up or down via a motor and a chain 104. Thus, the elevating means 105 causes the vehicle body B to be seated on the receiving members 102, 102, 102, 102 from the elevating members 103, 103, or receives the vehicle body B from the receiving members 102, 102, 102, 102. .
[0005]
[Problems to be solved by the invention]
Length L between outermost receiving members 102, 102 arranged on one slat 101 (length between outermost pair of receiving members 102, 102 in a horizontal plane and perpendicular to the transport direction) Must be less than or equal to the width W of the slat 101 (the length of the slat 101 in the horizontal plane and perpendicular to the transport direction). The reason is that, in the return portion 100b of the slat conveyor 100, the columns 106 and the like of the slat conveyor 100 become obstacles. Therefore, since the length L between the receiving members is smaller than the vehicle width BW of the vehicle body B, the support of the vehicle body B is limited to a position from the center of the lower surface. In particular, when the old type slat conveyor is continuously used, if the work is performed while supporting the vehicle body B having a wide vehicle width BW in recent years, the stability is poor and the workability is reduced.
[0006]
When the receiving members 102, 102, 102, 102 protrude from both sides of the slat conveyor 100 to secure a sufficient length L between the receiving members with respect to the vehicle width BW, the receiving members 102, 102, 102, 102, 102 and the lifts 103, 103 receive the same flange on the lower surface of the vehicle body B. Therefore, when transferring the vehicle body B, the elevating members 103 have to move up and down between the front and rear receiving members 102, 102, 102, 102. As a result, it is necessary to adjust the timing of raising and lowering the lifting members 103, 103 depending on the positional relationship between the receiving members 102, 102, 102, 102 and the lifting members 103, 103.
[0007]
Accordingly, an object of the present invention is to provide a slat conveyor for transporting an automobile body, which can transport the automobile body while maintaining the vehicle body in a stable state, and which performs delivery of the automobile body at an optimum time.
[0008]
[Means for Solving the Problems]
The slat conveyor for transporting an automobile body according to the present invention that has solved the above problems,
In a slat conveyor that circulates slats arranged in a row, seats and supports the vehicle body, and conveys it,
A receiving means fixedly mounted on the upper surface of the slat, arranging a pair of receiving members movable in the width direction of the slat conveyor, and seating and supporting the vehicle body with the receiving member;
First operating means for moving the receiving member inward in the width direction of the slat conveyor,
Second operating means for moving the receiving member outward in the width direction of the slat conveyor,
The receiving member may be housed within the width of the slat by the first operating means, and the receiving member may be projected outward from the width of the slat by the second operating means.
In the slat conveyor for transporting the vehicle body, since the length between the receiving members can be sufficiently ensured with respect to the width of the vehicle body in each work process, the work can be performed in a stable state. Further, since the receiving member can be accommodated in the slat width in the return portion, the receiving member does not obstruct the conveyance.
[0009]
Further, in the slat conveyor for transferring the vehicle body,
The jack-up point of the vehicle body is seated and supported by the receiving member.
Since the strong jack-up point is supported in the vehicle body, the vehicle body is supported in a more stable state, and the vehicle body is not damaged.
[0010]
Further, the slat conveyor for vehicle body transportation according to the present invention,
In a slat conveyor that circulates slats arranged in a row, seats and supports the vehicle body, and conveys it,
A plurality of receiving members disposed on the slats at predetermined intervals in the conveying direction of the slat conveyor, projecting outward on both sides in the width direction of the slat conveyor, and seating and supporting an automobile body;
The vehicle body is seated and supported by lifting members arranged on both sides of the slat conveyor, and when the lifting member is positioned between the front and rear of the receiving member, the vehicle moves up and down to transfer the vehicle body to the slat conveyor. Means,
The optimal time when the elevating member moves up and down the height position of the receiving member, based on the time when a specific slat in the slat has passed a predetermined position, is calculated from the transport speed of the slat conveyor, It is characterized by comprising a control means for instructing the elevating means to perform an elevating operation.
In the slat conveyor for transporting the vehicle body, since the ascending and descending timing of the elevating member is constantly controlled by the control means, the elevating member is moved up and down by passing the elevating member between the front and rear receiving members without interference between the receiving member and the elevating member. be able to.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a slat conveyor for transporting a vehicle body according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of a slat conveyor 1 for transporting a vehicle body, FIG. 2 is a half plan view of the slat conveyor 1 for transporting a vehicle body, FIG. 3 is a front view of the slat conveyor 1 for transporting a vehicle body, and FIG. FIG. 5 is a plan view and a front view of a moving mechanism of a receiving member of the slat conveyor 1, FIG. 5 is a schematic view of an entire configuration of the slat conveyor 1 for transporting an automobile body, and FIG. FIG. 7 is an operation diagram when the receiving member of the slat conveyor 1 for transferring the vehicle body is stored, FIG. 8 is an operation diagram when the vehicle body B is transferred to the slat conveyor 1 for transferring the vehicle body, and FIG. FIG. 4 is an operation diagram when the vehicle body B is transferred from the vehicle body transfer slat conveyor 1.
[0012]
First, the overall configuration of a slat conveyor 1 for transporting an automobile body (hereinafter, referred to as a slat conveyor 1) will be described (see FIG. 5). The slat conveyor 1 connects a motor 2 as a drive source to a slidable upstream end rotation member 4 via a chain 3. A plurality of slats 5 arranged in a line are juxtaposed on an endless chain (not shown) stretched between the end rotating members 4 and 4. The slat 5 circulates between the end rotation members 4 and 4. On the upper surfaces of the two slats 5, 5, a front receiving means 6 and a rear receiving means 26 for seating and supporting the vehicle body B are provided. The front receiving means 6 and the rear receiving means 26 have a structure in which the receiving members 16, 16 and the receiving members 16 ', 16' are movable in the width direction of the slat conveyor 1 by the first operating means 30 and the second operating means 40. (See FIG. 1). Further, the slat conveyor 1 includes an upstream elevating unit 50 and a downstream elevating unit 60 for transferring the vehicle body B to and from another transport device. The timing of raising and lowering the lift tables 52 and 62 is instructed by the control means 58 based on the time detected by the optical sensors 56 and 66 for each of the lift units 50 and 60.
In the transport direction, the transport source is upstream and the transport destination is downstream. The width direction of the slat conveyor 1 is a direction perpendicular to the transport direction in a horizontal plane.
[0013]
Next, the receiving means 6, 26 will be described (see FIGS. 1 to 4). The front receiving means 6 and the rear receiving means 26 have the same configuration and only partially differ in the shape of each member. Therefore, the front receiving means 6 will be mainly described.
[0014]
The front receiving means 6 and the rear receiving means 26 are disposed on the upper surfaces of the two slats 5 with a predetermined number of slats 5 therebetween. The number of slats 5 to be opened is a number corresponding to an interval at which the front and rear jack-up points BJ of the vehicle body B can be seated and supported by the front receiving means 6 and the rear receiving means 26.
[0015]
In the front receiving means 6, the reinforcing substrate 7 is arranged on the upper surface of the slat 5 along the longitudinal direction, and is fixed by bolting. The reinforcing substrate 7 is a rectangular plate material, and its longitudinal direction has substantially the same length as the longitudinal direction of the slat 5. The longitudinal direction is a direction perpendicular to the transport direction in a horizontal plane. On both sides of the longitudinal portion of the upper surface of the reinforcing substrate 7, a slide guide 8 stands on the upstream side, and a slide guide 9 stands on the downstream side. The slide guides 8, 9 have notches 8a, 9a at the top. A pair of sliders 11 and 12 are fitted into the notches 8a and 9a in a symmetric state with the central axis C as a target axis. Further, on the upper surfaces of the slide guides 8, 9, the ends of both sides in the longitudinal direction of the sliders 11, 12 are covered, and the holding members 13, 13 are fixed by bolting. As a result, the sliders 11, 12 are slidably supported between the notches 8a, 9a and the holding members 13, 13.
[0016]
Receiving members 16, 16 extending outward from the central axis C of the slat conveyor 1 are disposed on the upper surfaces of the sliders 11, 12, respectively. Further, sliding rollers 17 are provided on the upper surfaces of the slides 11 and 12, respectively. The sliding roller 17 is axially mounted on the slider 11 (or 12) in the vertical direction with a rotating shaft 17a. The sliding roller 17 has a cylindrical shape, is rotatable, and is a portion pressed by the second operating means 40.
[0017]
The receiving member 16 has a substantially L-shape, and the end of the vertical surface 16a is fixed to the slider 11 (or 12) (FIG. 4B). Further, reinforcing members 16c, 16c are attached to the vertical surface 16a to assist the standing strength of the vertical surface 16a (FIG. 2). Further, the receiving portion 15 is fixed to the upper surface of the horizontal surface 16b (FIG. 4B). The receiving portion 15 is a portion that directly receives the jack-up point BJ of the vehicle body B. Further, a sliding roller 18 is provided on the lower surface of the outer end of the horizontal surface 16b. The sliding roller 18 is mounted on a horizontal surface 16b in a vertical direction with a rotating shaft 18a. The sliding roller 18 has a cylindrical shape, is rotatable, and is a portion pressed by the first operation means 30.
[0018]
On the inner wall of the slide guide 9 on the downstream side, a pair of locking guide members 14, 14 are fixedly provided on both sides along the longitudinal direction. The locking guide members 14 have a length from the vicinity of the central axis C of the slat conveyor 1 to each end of the slide guide 9. Further, each of the locking guide members 14 is formed with a U-shaped notch 14a, 14a near both ends toward the inside (in a direction opposite to the transport direction) (FIG. 4A). The notches 14a lock the locking guide roller 23, which will be described later, and thus position the slider 11 (or 12). The positions at which the notches 14a are formed are determined by the width BW of the vehicle body B, the width W of the slat 5, and the shape of the receiving member 16 (receiving portion 15) (particularly, in a horizontal plane, perpendicular to the transport direction). Length in the direction).
[0019]
Further, guide members 19, 19 are fixedly provided on the lower surfaces of the sliders 11, 12. Each guide member 19 has two through holes 19a, 19a (FIG. 4A). Two cylindrical slide guides 20, 20 are inserted into the through holes 19a, 19a and are slidable. Further, the regulating member 21 is fitted to the guide member 19 at the center. Further, a bracket 22 is fixed to the other ends of the slide guides 20 and 20 and the regulating member 21. A lock guide roller 23 is axially mounted on the lock guide member 14 side of the bracket 22 in a vertical direction by a rotation shaft 23a. The slide guides 20, 20, the regulating member 21, the bracket 22, and the locking guide roller 23 are slidable in the transport direction. Further, the guide member 19, the slide guides 20, 20, the regulating member 21, the bracket 22, and the guide roller 23 for locking are movable in the width direction of the slat conveyor 1 together with the slider 11.
[0020]
In addition, coil springs 24, 24 are mounted around the slide guides 20, 20 in a constantly contracted state (FIG. 4A). Therefore, the lock guide roller 23 always presses against the side surface of the lock guide member 14. As a result, the locking guide roller 23 fits into the locking notches 14a, 14a, and positions and fixes the slider 11 (or 12) to which the guide member 19 is fixed.
[0021]
Note that the rear receiving means 26 has the same configuration as the front receiving means 6, and the shape of each member is partially different. The width of the rear receiving means 26 in the transport direction of the sliders 11 ', 12' is wider than that of the front receiving means 6. Accordingly, the shape of the slide guide 9 'on the downstream side is different. The receiving portions 15 ', 15' for seating and supporting the vehicle body B and the receiving members 16 ', 16' are different in shape.
[0022]
The front receiving means 6 and the rear receiving means 26 seat and support four jack-up points BJ of the vehicle body B. The jack-up point BJ has a reinforced structure that withstands the load at the time of jack-up, and is therefore optimal for supporting the vehicle body B. In addition, by using it as a supporting portion, the vehicle body B is not damaged by the weight or the like.
[0023]
Next, the first operation means 30 will be described (see FIG. 1).
The first operating means 30 is disposed downstream of the slat conveyor 1, and after receiving the work of the vehicle body B on the slat conveyor 1, the first operating means 30 moves the receiving members 16, 16, 16 ′, 16 ′ in the width direction of the slat conveyor 1. It is slid inward (in a direction approaching the center axis C).
[0024]
The first operating means 30 has bases 31 on both sides of the slat conveyor 1. The bases 31, 31 are framed in a rectangular parallelepiped by square members, and the upper surfaces are covered with rectangular flat plates 31a, 31a. The cylinders 32, 32 are disposed on the upper surfaces of the flat plates 31a, 31a. The arrangement of the cylinders 32, 32 is such that the piston rods 32a, 32a face inward in the width direction of the slat conveyor 1 (direction approaching the central axis C). As a result, the piston rods 32a, 32a can move forward and backward in the width direction of the slat conveyor 1.
The drive source of the cylinder 32 is not particularly limited, such as a hydraulic pressure or a hydraulic pressure.
[0025]
Further, push members 34, 34 are fixedly provided at the inner ends of the piston rods 32a, 32a, respectively. The pressing members 34, 34 have a plane parallel to the vertical direction, and press the sliding rollers 18, 18 (or 18 ', 18') of the receiving means 16, 16 (or 16 ', 16') inward. I do. Further, cylindrical slide guide beams 35, 35, 35, 35 are respectively disposed on both sides of the surfaces of the pressing members 34, 34 on which the piston rods 32a, 32a are fixed. The slide guide beams 35, 35, 35, 35 are inserted into and supported by two holding members 36, 36, respectively. As a result, the slide guide beams 35, 35, 35, 35 are held parallel to the piston rods 32a, 32a and are slidable, thereby stabilizing the sliding movement of the pushing members 34, 34.
[0026]
Next, the second operation means 40 will be described (see FIG. 1).
The second operating means 40 is disposed upstream of the slat conveyor 1, and before receiving the vehicle body B on the slat conveyor 1, moves the receiving members 16, 16, 16 ′, 16 ′ in the width direction of the slat conveyor 1. It is slid outward (in a direction away from the center axis C).
[0027]
The second operating means 40 has bases 41 on both sides of the slat conveyor 1. The bases 41, 41 are square members, and the upper ends reach above the slat conveyor 1. On the upper surfaces of the bases 41, 41, cylinders 42, 42 are provided. The cylinders 42, 42 are arranged such that the piston rods 42a, 42a face inward in the width direction of the slat conveyor 1 (directions approaching the central axis C). As a result, each of the piston rods 42a, 42a can move forward and backward in the width direction of the slat conveyor 1.
The driving source of the cylinder 42 is not particularly limited, such as a hydraulic pressure or a hydraulic pressure.
[0028]
Further, the inner ends of the piston rods 42a, 42a are fixed to the upper ends of the base members 43, 43. The base members 43, 43 are substantially L-shaped, and the pressing members 44, 44 are fixed to the lower surface. The pressing members 44 have a plane parallel to the vertical direction, and press the sliding rollers 17, 17 (or 17 ', 17') of the slides 11, 12 (or 11 ', 12') outward. . Further, a single cylindrical slide guide beam 45 is provided so as to penetrate through the lower ends of the base members 43 and 43. The slide guide beam 45 is supported by inserting both ends into holding members 46, 46 fixed to the base 41, respectively. As a result, the slide guide beam 45 is held parallel to the piston rods 42a, 42a and becomes slidable, and stabilizes the sliding movement of the push members 44, 44.
[0029]
Next, the upstream lifting / lowering means 50 and the downstream lifting / lowering means 60 will be described (see FIGS. 1 and 5). In addition, since the upstream lifting / lowering means 50 and the downstream lifting / lowering means 60 have the same configuration, the upstream lifting / lowering means 50 will be mainly described.
[0030]
The upstream lifting / lowering means 50 (or the downstream lifting / lowering means 60) is provided upstream of the slat conveyor 1, and transfers the vehicle body B to the slat conveyor 1 from another transfer device (not shown). The upstream lifting / lowering means 50 (or the downstream lifting / lowering means 60) includes lifting platforms 51, 51 (or 61, 61) on both sides of the slat conveyor 1. The elevating tables 51, 51 (or 61, 61) are supported at both ends by two columns (not shown) and are movable in the vertical direction. Each of the elevating tables 51, 51 (or 61, 61) has a rectangular plate shape, and the elevating tables 52, 52 (or 62, 62), which are elevating members, are fixed to ends of the slat conveyor 1 on the upper surface. I do. The elevating tables 52, 52 (or 62, 62) have a rectangular plate shape, and have a length in the transport direction of the receiving member 16 of the front receiving means 6 and the receiving member 16 'of the rear receiving means 26, ΔL (FIG. 2). (See Reference). The lifting tables 52, 52 (or 62, 62) seat and support the same flange portion BF of the vehicle body B as the front receiving means 6 and the rear receiving means 26 (FIG. 3).
[0031]
Chains 54, 54 (or 64, 64) connected to a motor 55 (or 65) are respectively stretched at the ends of the lift tables 51, 51 (or 61, 61) on the side opposite to the slat conveyor 1. I do. As a result, the lifts 51, 51 (or 61, 61) can be moved in the vertical direction by using the motor 55 (or 65) as a drive source.
[0032]
Further, the motor 55 (or 65) is started, stopped, and speed-controlled by the control means 58. The control unit 58 receives detection signals from the upstream optical sensor 56 and the downstream optical sensor 66. The optical sensors 56 and 66 are disposed on the side of the upper surface of the slat conveyor 1 to measure the passage time of the front receiving means 6 and inwardly (in the stopping axis C direction of the slat conveyor 1). ). The position where the upstream optical sensor 56 is installed is slightly upstream of the upstream lifting / lowering means 50. The position where the downstream optical sensor 66 is installed is a position slightly upstream of the downstream elevating means 60.
[0033]
The control means 58 is connected to the motors 55 and 65, the optical sensors 56 and 66, and the encoder (not shown) of the motor 2. The control means 58 calculates the feed speed of the motor 2 and thus the transport speed of the slat 5 from the value of the encoder of the motor 2. Further, based on the detection times of the optical sensors 56 and 66, the arrival times of the front receiving means 6 and the rear receiving means 26 at the fixed positions are calculated. Then, it controls the driving of the motors 55 and 65, and further controls the elevation of the elevation tables 51 and 61 (elevation tables 52 and 62).
[0034]
In addition, the upstream lifting / lowering means 50 can stop the lifting / lowering tables 52, 52 slightly above the receiving members 16, 16, 16 ', 16' and stop slightly below the receiving members 16, 16, 16 ', 16'. The downstream lifting means 60 can stop the lifting tables 62, 62 slightly below the receiving members 16, 16, 16 ', 16'.
[0035]
Next, the operation of the slat conveyor 1 will be described. The operation of the slat conveyor 1 is as follows. The first operating means 30 and the second operating means 40 project and receive the receiving means 16, 16, 16 ', 16' of the receiving member 6, 26, the upstream lifting means 50 and the downstream lifting means. 60, the vehicle body B is delivered.
[0036]
The slat conveyor 1 is a conveying means in an automobile parts assembling process. The slat conveyor 1 lowers the automobile body B, for example, after the painting process or the like is completed, at the most upstream position by the upstream elevating means 50 and seats and supports it with the receiving members 6, 26. Transport. Then, the vehicle body B is conveyed downstream while assembling the parts to the vehicle body B, and the vehicle body B is raised by the downstream elevating means 60 in order to transfer to another conveyance means (not shown) at the most downstream position. The slat conveyor 1 causes the receiving members 16, 16, 16 ', 16' of the receiving means 6, 26 to protrude by the second operating means 40 before being transferred to the slat conveyor 1 from another transporting device. After the completion of all the steps in the slat conveyor 1 and before transfer to another transporting means, the slats are stored by the first operating means 30.
[0037]
First, the operation when the receiving members 16, 16 (or 16 ', 16') of the slat conveyor 1 protrude will be described (see FIGS. 1 and 6).
Here, the operation of projecting the receiving members 16, 16 of the front receiving means 6 will be described. The operation of projecting the receiving members 16 ', 16' of the rear receiving means 26 is the same as that of the front receiving means 6, so that the description is omitted. The receiving members 16, 16, 16 ′, 16 ′ are made to protrude beyond the width W of the slat 5 in order to seat and support the vehicle body B at the working section 1 a of the slat conveyor 1.
[0038]
The slat conveyor 1 causes the receiving members 16, 16 stored in the return portion 1 b to protrude outward in the width direction of the slat conveyor 1 (in a direction away from the central axis C of the slat conveyor 1) by the second operating means 40. . During conveyance, the front receiving means 6 passes below the push members 44, 44 of the second operating means 40. At this time, the piston rods 42a, 42a start to enter the cylinders 42, 42 of the second operating means 40, and the pushing members 44, 44 contact the sliding rollers 17, 17 of the front receiving means 6 (FIG. 6 ( a)).
[0039]
Then, the piston rods 42a, 42a continue to enter, and the pressing members 44, 44 press the sliding rollers 17, 17 outward in the width direction of the slat conveyor 1 (in a direction away from the center axis C of the slat conveyor 1). . As a result, the sliders 11, 12 on which the sliding rollers 17, 17 are pivoted slide, and the receiving members 16, 16 move outward (FIG. 6B). Since the slat conveyor 1 is constantly flowing, the sliding rollers 17 and 17 rotate according to this flow.
[0040]
Further, with the movement of the sliders 11 and 12, the guide member 19 and the like also move along the lock guide member 14 until the lock guide roller 23 is locked in the notch 14a outside the slat conveyor 1 (FIG. 4 (a)). When locked, the piston rods 42a, 42a stop entering, and the receiving members 16, 16 are set in a position where the vehicle body B can be seated and supported (FIG. 6C).
[0041]
Finally, the piston rods 42a begin to retreat from the cylinders 42, 42, and the pushing members 44, 44 move in the direction of the central axis C of the slat conveyor 1 (FIG. 6D). Then, the second operation means 40 holds the pushing members 44 at the operation start position for acting on the rear receiving means 26, and enters a standby state. On the other hand, after acting on the rear receiving means 26, the second operating means 40 enters a standby state for the next front receiving means 6.
[0042]
Next, the operation when the receiving members 16, 16 (or 16 ', 16') of the slat conveyor 1 are stored will be described (see FIGS. 1 and 7).
By the way, the function of storing the receiving members 16 and 16 of the front receiving means 6 and the function of storing the receiving members 16 ′ and 16 ′ of the rear receiving means 26 are the same. Only the operation of accommodating the receiving members 16, 16 will be described. The receiving members 16, 16, 16 ′, 16 ′ are stored within the width W of the slat 5 so as not to hinder the return section 1 b of the slat conveyor 1.
[0043]
The slat conveyor 1 stores the receiving members 16, 16 that have been protruded by the working unit 1 a in the width direction of the slat conveyor 1 (in the direction approaching the central axis C of the slat conveyor 1) by the first operating means 30. Let it. During conveyance, the front receiving means 6 passes inside the push members 34, 34 and the like of the first operating means 30. At this time, the piston rods 32a, 32a start to retreat from the cylinders 32, 32 of the first operating means 30, and the pressing members 34, 34 contact the sliding rollers 18, 18 of the front receiving means 6 (FIG. 7 ( a)).
[0044]
Then, the piston rods 32a, 32a continue to retreat, and the pushing members 34, 34 press the sliding rollers 18, 18 inward in the width direction of the slat conveyor 1 (directions approaching the central axis C of the slat conveyor 1). I do. As a result, the receiving members 16, 16 on which the sliding rollers 18, 18 are pivoted slide, and the receiving members 16, 16 move inward (FIG. 7B). Since the slat conveyor 1 is constantly flowing, the sliding rollers 18, 18 rotate according to this flow.
[0045]
Further, with the movement of the sliders 11, 12 on which the receiving members 16, 16 are fixed, the guide member 19 and the like also move along the locking guide member 14 into the notch 14 a inside the slat conveyor 1 and the locking guide roller. It moves until 23 locks (FIG. 4A). When locked, the piston rods 32a, 32a stop retreating, and the outermost sides of the receiving members 16, 16 are housed within the width W of the slat 5 (FIG. 7 (c)).
[0046]
Finally, the piston rods 32a, 32a start to enter the cylinders 32, 32, and the pushing members 34, 34 move outwards of the side of the slat conveyor 1 (FIG. 7D). Then, the first operating means 30 holds the pushing members 34, 34 at the operation start position for acting on the rear receiving means 26, and enters a standby state. On the other hand, after operating on the rear receiving means 26, the first operating means 30 enters a standby state for the next front receiving means 6.
[0047]
Next, an operation when the vehicle body B is transferred to the slat conveyor 1 will be described (see FIGS. 1, 5, and 8). When the vehicle body B is transferred from another transfer device (not shown) to the slat conveyor 1, the transfer is performed by the upstream lifting / lowering means 50.
[0048]
First, the upstream optical sensor 56 detects passage of the front receiving unit 6 and transmits a signal to the control unit 58. Further, a signal is transmitted from the encoder (not shown) of the motor 2 to the control means 58. Then, the control unit 58 calculates the transport speed of the slat 5 from the value of the encoder of the motor 2. Further, the control means 58 calculates the time at which the front receiving means 6 passes through the position of the elevation table 52 from the transport speed of the slat 5 based on the time input from the optical sensor 56.
[0049]
Next, the control means 58 sends a signal to the motor 55 to lower the elevating table 51 slightly before the passing time based on the passing time at the position of the elevating table 52, and to lift and lower the vehicle body B seated. The table 52 is lowered (FIG. 8A). Then, the control means 58 stops the elevating table 52 slightly above the receiving members 16 and 16 'and makes it stand by (FIG. 8B). The reason for the standby is to enable the transfer in a short time when the elevating table 52 is located between the front receiving means 6 and the rear receiving means 26 during transportation.
[0050]
With the conveyance of the slat conveyor 1, the front receiving means 6 and the rear receiving means 26 move in the conveying direction, and the elevating table 52 is positioned between the front receiving means 6 and the rear receiving means 26 (FIG. 8 (c)). At that time, the control means 58 drives the motor 55 to rapidly lower the elevating table 52. As a result, the vehicle body B seated and supported on the elevating table 52 is transferred to the front receiving means 6 and the rear receiving means 26 (FIG. 8D). Then, the control means 58 stops the elevating table 52 at a position slightly lower than the receiving members 16, 16 '. Thereafter, while the vehicle body b is being conveyed to the slat conveyor 1, parts are assembled.
[0051]
Next, the operation when the vehicle body B is transferred from the slat conveyor 1 will be described (see FIGS. 1, 5, and 9). When the vehicle body B is transferred from the slat conveyor 1 to another transfer device (not shown), the transfer is performed by the downstream elevating means 60.
[0052]
First, the downstream optical sensor 66 detects passage of the front receiving unit 6 and transmits a signal to the control unit 58. Further, a signal is transmitted from the encoder (not shown) of the motor 2 to the control means 58. Then, the control unit 58 calculates the transport speed of the slat 5 from the value of the encoder of the motor 2. Further, the control means 58 calculates the time at which the front receiving means 6 passes through the position of the elevation table 62 from the transport speed of the slat 5 based on the time input from the optical sensor 66.
[0053]
The elevating table 62 stops slightly below the receiving members 16 and 16 'in response to a command from the control means 58, and is in a standby state (FIG. 9A). The reason for the standby is to enable the transfer in a short time in which the elevating table 62 is located between the front receiving means 6 and the rear receiving means 26 during transportation.
[0054]
With the conveyance of the slat conveyor 1, the front receiving means 6 and the rear receiving means 26 move in the conveying direction, and the elevating table 62 is positioned between the front receiving means 6 and the rear receiving means 26 (FIG. 9 (b)). At that time, the control means 58 drives the motor 65 to rapidly raise the elevating table 62. As a result, the vehicle body B seated and supported by the receiving members 16, 16 'is transferred to the lifting table 62 (FIG. 9C). Further, the control means 58 raises the elevating table 62 and transfers it to another transport device (not shown).
[0055]
The slat conveyor 1 having the above structure has a structure in which the receiving members 16, 16, 16 ', 16' of the receiving means 6, 26 are movable in the width direction of the slat conveyor 1. Therefore, in the working section 1a of the slat conveyor 1, the receiving members 16, 16, 16 ', 16' are projected beyond the width W of the slat 5, and the vehicle body B can be stably seated and supported. In the return section 1b of the slat conveyor 1, the receiving members 16, 16, 16 ', 16' are stored within the width W of the slat 5, and the receiving members 16, 16, 16 ', 16' do not obstruct the conveyance. To do. Further, by setting the jack-up point BJ of the vehicle body B as a supporting portion, the vehicle body B is not damaged.
[0056]
Further, when the vehicle body B is transferred between the slat conveyor 1 and another transfer device, the lifts 51, 51 (or 61, 61) are moved up and down by the optical sensor 56 (or 66) and the encoder of the motor 2 and the like. The control means 58 controls the timing of ascending and descending by utilizing this. Thus, the lifting tables 52, 52 (or 62, 62) can be moved up and down between the front receiving means 16, 16 and the rear receiving means 16 ', 16' during transportation.
[0057]
The present invention is embodied in various forms without being limited to the above embodiments.
For example, the notch of the lock guide member that regulates the slide of the receiving means is set to correspond to the width of one type of vehicle body, but a plurality of notches are provided so as to correspond to a plurality of types of vehicle width. A portion may be provided.
For example, an optical sensor is used for the passage of the front receiving unit, but another sensor such as an ultrasonic sensor may be used.
【The invention's effect】
As described above, the slat conveyor for transporting an automobile body according to the present invention can transport the automobile body while holding the automobile body in a stable state, and the receiving member does not hinder the transportation when returning. In addition, since the jack-up point is supported, the stability is further improved and the vehicle body is not damaged. Further, since the lifting member can be raised and lowered at the optimum time, the lifting member and the receiving member can support the same flange portion of the vehicle body.
[Brief description of the drawings]
FIG. 1 is a perspective view of a slat conveyor for transporting an automobile body according to the present invention.
FIG. 2 is a half plan view of a slat conveyor for transporting an automobile body according to the present invention.
FIG. 3 is a front view of the slat conveyor for transporting an automobile body according to the present invention.
4A and 4B show a moving mechanism of a receiving member of the slat conveyor for transporting a vehicle body according to the present invention, wherein FIG. 4A is a plan view and FIG. 4B is a front view.
FIG. 5 is a schematic diagram of the overall configuration of a slat conveyor for transporting an automobile body according to the present invention.
FIG. 6 is an operation diagram when the receiving member of the slat conveyor for transporting an automobile body according to the present invention projects.
FIG. 7 is an operation diagram when the receiving member of the slat conveyor for transporting a vehicle body according to the present invention is stored.
FIG. 8 is an operation diagram when the vehicle body is transferred to the slat conveyor for transporting the vehicle body according to the present invention.
FIG. 9 is an operation diagram when the vehicle body is transferred from the vehicle body conveying slat conveyor according to the present invention.
10 (a) is a plan view and FIG. 10 (b) is a front view of a conventional slat conveyor for transporting automobiles.
[Explanation of symbols]
1 ... Slat conveyor for transporting car bodies
2 ... motor
3 ... Chain
4 ... End rotation member
5 ・ ・ ・ Slat
6 Front part receiving means
7 ... substrate for reinforcement
8, 9 ... slide guide
11, 11 ', 12, 12' ... slider
13 ... holding member
14. Locking guide member
15, 15 '... receiving part
16, 16 '... receiving member
17, 17 ', 18, 18' ... sliding rollers
19 ... guide member
20 ... Slide guide
21 ・ ・ ・ Regulation member
22 ... Bracket
23 ・ ・ ・ Locking guide roller
24 ・ ・ ・ Coil spring
26 Rear part receiving means
30 first operation means
31, 41 ... base
32, 42 ... cylinder
34, 44 ... pushing member
35, 45 ... slide guide beam
36, 46 ... holding member
40 second operation means
43 ・ ・ ・ Base member
50 ・ ・ ・ Upstream lifting / lowering means
51, 61 ... elevator
52, 62 ... lifting table
54, 64 ... chain
55, 65 ... motor
56, 66: Optical sensor
58 ... control means
60 Downstream elevating means
B ・ ・ ・ Car body
BF: Flange part
BJ ・ ・ ・ Jack up point
BW ... body width
C: Center axis of slide guide
L: Length between receiving members
W: slat width
ΔL: Distance between front and rear receiving members

Claims (3)

In a slat conveyor that circulates slats arranged in a row, seats and supports the vehicle body, and conveys it,
A receiving means fixedly mounted on the upper surface of the slat, arranging a pair of receiving members movable in the width direction of the slat conveyor, and seating and supporting the vehicle body with the receiving member;
First operating means for moving the receiving member inward in the width direction of the slat conveyor,
Second operating means for moving the receiving member outward in the width direction of the slat conveyor,
A slat for transporting an automobile body, wherein the receiving member is housed within the width of the slat by the first operating means, and the receiving member is projected outward from the width of the slat by the second operating means. Conveyor. 2. The slat conveyor according to claim 1, wherein the receiving member seats and supports a jack-up point of the vehicle body. 3. In a slat conveyor that circulates slats arranged in a row, seats and supports the vehicle body, and conveys it,
A plurality of receiving members disposed on the slats at predetermined intervals in the conveying direction of the slat conveyor, projecting outward on both sides in the width direction of the slat conveyor, and seating and supporting an automobile body;
The vehicle body is seated and supported by lifting members arranged on both sides of the slat conveyor, and when the lifting member is positioned between the front and rear of the receiving member, the vehicle moves up and down to transfer the vehicle body to the slat conveyor. Means,
Optimum time when the elevating member moves up and down by passing the height position of the receiving member, based on the time when a specific slat in the slat has passed a predetermined position, is calculated from the transport speed of the slat conveyor, A slat conveyor for transporting a vehicle body, comprising: a control unit that commands a lifting operation to the lifting unit.

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