JP5413601B2 - Conveying device using a traveling body for transportation - Google Patents

Description

  The present invention relates to a conveying device that propels a conveying traveling body by a screw shaft supported along a traveling path.

  This type of screw-driven conveying device engages with a spiral portion of a screw shaft supported along a traveling path of a conveying traveling body and is driven in the axial direction of the screw shaft by the rotation of the screw shaft. A propulsion traveling body is propelled by a roller, which is conventionally known in Patent Document 1 and the like. In this type of conventional conveying device using a screw drive system, a driven roller that engages with a screw shaft is provided. It was attached directly to the traveling body for conveyance.

Japanese Patent Laid-Open No. 9-58463

  The screw drive system has the merit that the traveling speed of the conveying traveling body in the same traveling route can be changed for each section by changing the pitch of the spiral portion. In the transport device using the system, the driven roller that engages with the screw shaft is directly attached to the transport traveling body. Therefore, as the transport traveling body, a driven system that engages with another drive system, for example, a pusher of a chain conveyor. A chain conveyor drive type traveling body provided with a dog on the transportation body cannot be used as it is. In other words, for example, a layout is adopted in which a conveyor for a chain conveyor drive system is transferred from a chain conveyor drive line to a screw drive line, or vice versa. I couldn't.

The present invention proposes a transport device using a transport traveling body that can solve the conventional problems as described above, and the transport device using a transport traveling body according to the first aspect of the present invention is provided. In order to make it easier to understand the relationship with the embodiment described later, the reference numerals used in the description of the embodiment are shown in parentheses, and are supported along the travel route of the transport traveling body (1). The traveling body (1) is propelled by the driven roller (34a) that is engaged with the spiral portion (41a) of the screw shaft (35) and is sent in the axial direction of the screw shaft by the rotation of the screw shaft (35). a conveying apparatus conveying traveling body available to be, between the running path of the screw shaft (35) and the conveying traveling body (1), movable intermediate movable member to the screw shaft axis direction (28) And provided the driven roller (34a) on the intermediate movable body (28). Conveying traveling body propulsion pusher (33) provided as well as supporting, conveying traveling provided in the pusher engages disengageably to (33) the driven dog (23) is the conveying traveling body (1) In the body-use transfer device,
The pusher (33) of the intermediate movable body (28) and the driven dog (23) of the transport traveling body (1) allow the overtaking movement of the driven dog (23) relative to the pusher (33), but vice versa. The intermediate movable body (28) stopped before the entrance of the drive section is formed at the entrance of the drive section (screw drive line SD) having a non-return structure and provided with the screw shaft (35). An intermediate movable body feeding means (59) for feeding the driven roller (34a) to a position where the driven roller (34a) engages with the screw shaft (screw shaft unit 36C), and an intermediate movable body (28) stopped before the entrance of the drive section. Conveying traveling body feeding means (63) for feeding the traveling traveling body (1) from the pusher (33) to the position preceded by the driven dog (23) is provided .

Further, the transport device using the transport traveling body according to the second aspect of the present invention is the transport device using the transport traveling body having the same prerequisite as the prerequisite in the first invention, wherein the screw shaft (35) On the exit side of the drive section (screw drive line SD) provided with the intermediate movable body (28) sent from this drive section is moved in a direction perpendicular to the travel path of the transport travel body (1). Intermediate movable body feeding means (traverser 50) and conveying traveling body feeding means for feeding the conveying traveling body (1) after the intermediate movable body (28) is separated to the lower traveling path (chain conveyor drive line TC2). (64) and it has become the composition where it is added .

Further, according to a third aspect of the present invention, there is provided a conveying device using a conveying traveling body, wherein the screw shaft (35) is a conveying device using a conveying traveling body having the same prerequisites as those of the first invention. ), The drive section (screw drive line SD) is in pressure contact with the friction drive surface (20) and the friction drive surface (20), which is provided on the conveying traveling body (1) so as to be continuous over its entire length. friction drive wheel for rotating (42) and that has become connected to each other in the friction drive line to use.

Further, the transport device using the transport traveling body according to the fourth aspect of the present invention is the transport device using the transport traveling body having the same prerequisite as the prerequisite in the first invention, wherein the screw shaft (35 The drive section (screw drive line SD) provided with a chain conveyor drive line (chain drive driven) with a pusher (45) that is detachable with respect to the driven dog (23) of the traveling body (1). Line TC1, TC2).

According to the configuration of the first aspect of the present invention, it is not necessary to provide a driven roller that engages with the spiral portion of the screw shaft in the transport traveling body, and it can be freely engaged with and disengaged from the pusher provided in the intermediate movable body. It is sufficient that a driven dog is provided, so that the driven dog provided in the conventional chain conveyor drive type transporting body, that is, the transport provided with the driven dog that is detachable with respect to the pusher of the chain conveyor. The traveling body for transportation can be used as it is as a traveling body for conveyance of a screw drive system. In other words, the transport traveling body driven by the chain conveyor drive line is transferred to the screw drive line as it is, or conversely, the transport travel body driven by the screw drive line is transferred to the chain conveyor drive line as it is. It becomes possible to drive, and the degree of freedom of the layout of the transport line is expanded, for example, the chain conveyor drive line can be combined with the screw drive line according to the work process for the object to be transported.

In particular , according to the configuration of the first aspect of the present invention , it is possible to easily and reliably transfer the transport traveling body including the driven dog from another drive line such as a chain conveyor drive line to the screw drive line. Further, according to the configuration of the second aspect of the present invention , it is possible to easily and surely transfer the conveying traveling body from the screw drive line to another drive line, and a dedicated return path from the end of the screw drive line. The intermediate movable body can be returned to the starting end position of the screw drive line via the, and compared with the case where the intermediate movable body has to travel back and forth on the screw drive line, The travel interval can be narrowed freely.

Further, according to the configuration of the third aspect of the present invention , the transport traveling body can be driven to an arbitrary position and stopped, or the stopped transport traveling body can be started to drive at an arbitrary timing. Since the traveling body for conveyance can be transferred between the friction drive line and the screw drive line, the first aspect of the invention can be obtained by combining with the configuration of the first aspect of the invention or the second aspect of the invention. It is possible to configure the transport traveling body feeding means and the transport traveling body sending means necessary for carrying out the second aspect of the present invention at the terminal end portion or the start end portion of the friction drive line. Simple and inexpensive to implement. Of course, as in the configuration of the fourth aspect of the present invention, the chain conveyor drive line and the screw drive line having pushers that can be freely engaged and disengaged with respect to the driven dog of the transport traveling body may be connected to each other. it can.

In addition, the transport traveling body is composed of a plurality of trolleys arranged at appropriate intervals in the traveling direction, a load bar connecting these trolleys, and a transported object support base supported by the plurality of trolleys. Things are known. The transport traveling body having such a structure is suitable for driving with a chain conveyor drive type driving device in a traveling path including a horizontal curve path section and an up and down gradient path section. Although it is possible to drive by the friction drive method by making the side surface a friction drive surface, it is difficult to provide two driven rollers at an appropriate interval in the running direction in order to drive by the screw drive method It is. Therefore, according to the present invention, the chain conveyor drive type transport traveling body having such a structure naturally has a driven dog, that is, a driven dog provided in one of the plurality of trolleys. The conveying traveling body can be driven by a screw driving method using the above as it is .

It is a side view of the whole conveying apparatus. It is a vertical front view of the whole conveying apparatus. It is a vertical side view of the trolley provided with the driven dog of the conveyance traveling body. It is a partially notched side view which shows a state when driving the traveling body for conveyance with a friction drive line. It is a partially notched side view which shows a state when driving the conveyance traveling body with a chain conveyor drive line. Fig. A is a plan view for explaining the configuration on the screw drive line entrance side, and Fig. B is a side view thereof. A figure is a top view explaining the structure of the screw drive line exit side, B figure is the same side view. It is a side view which shows the specific structure by the side of a screw drive line entrance.

  An embodiment of the present invention will be described with reference to FIGS. 1 to 3. Reference numeral 1 denotes a transporting traveling body, which is a transported object support base 2 and an automobile mounted on the transported object support base 2. A pair of front and rear loads for supporting two connecting portions of the load bar 3 having a length slightly longer than the total length of the conveyed object W such as a body and the three load bars 4 to 6 constituting the load bar 3 between the front and rear. The trolleys 7 and 8, the front end trolley 9 that supports the front end of the front load bar unit 4 of the load bar 3, and the rear end trolley 10 that supports the rear end of the rear load bar unit 6. The pair of front and rear load trolleys 7 and 8 and the transported object support base 2 are connected to each other by vertical members 11 and 12 that form two front and rear connecting portions of the load bar units 4 to 6.

  In addition, the transporting traveling body 1 shown in the figure is arranged between the front end trolley 9 and the front load bar unit 4 and the rear end trolley 10 and the rear side so that the horizontal traveling path portion and the up and down gradient path portion can smoothly travel. Between the load bar single bodies 6, there are provided joint portions 13 a and 13 b that can swing right and left around the vertical support shaft, near the rear end of the front load bar single body 4 and near the front end of the rear load bar single body 6. Joints 13c and 13d that can swing up and down are provided around the horizontal support shaft, and between the front load bar unit 4 and the central load bar unit 5 and between the central load bar unit 5 and the rear load bar unit 6. Are provided with joint portions 13e and 13f that are swingable horizontally around a vertical support shaft constituting the vertical members 11 and 12, respectively. Further, the pair of front and rear vertical members 11 and 12 that support the transported object support base 2 are connected to the pair of front and rear load trolleys 7 and 8 so as to be swingable back and forth around the left and right horizontal support shafts 11a and 12a. .

  All of the trolleys 7 to 10 of the transport traveling body 1 are supported by a guide rail 15 constituted by a pair of left and right groove-shaped rails 14a and 14b so as to be able to run freely. Is fitted between a pair of left and right pair of grooved rails 14a and 14b and a pair of left and right pair of front and rear support rollers 16 rotatable around a horizontal axis and a pair of left and right grooved rails 14a and 14b. A pair of left and right horizontal shafts are provided on the front end trolley 9 and the rear end trolley 10 so as to be fitted to the pair of left and right channel rails 14a and 14b, respectively. A support roller 18 that is rotatable around, and a pair of positioning rollers 19 that are rotatable around a pair of front and rear vertical axes that fit between the pair of left and right groove-shaped rails 14a and 14b are provided. It is.

  In addition, the left and right side surfaces of the load bar 3 constituted by the three load bars 4 to 6 are formed on the friction drive surface 20 that does not have a partial protrusion and is continuous over the entire length. When the traveling body 1 is adjacent to the front and rear, the lower half extension portion 9a of the front end trolley 9 and the upper half extension portion 10a of the rear end trolley 10 overlap each other so that the friction drive surface 20 is not interrupted. It is configured. Note that a pair of left and right support wheels 21 are pivotally supported at two places on the front and rear sides of the transported object support base 2, and a pair of left and right support guide rails on which the support wheels 21 roll on the travel path side. 22a and 22b can be laid.

  The transport traveling body 1 having the above configuration is provided with a driven dog 23 on the load trolley 7 on the front side thereof. As shown in detail in FIG. 3, the driven dog 23 includes a driven dog body 25 that is swingable around the left and right horizontal support shafts 24 on the front side and a left and right horizontal support shaft 26 that is on the rear side. The upward projecting portions 25a and 27a are brought into contact with the stopper portions 7a and 7b of the trolley body by gravity, so that the acting posture shown by the solid line is maintained. At the same time, the driven dog body 25 swings only upward and backward from the action posture, and the check dog 27 can swing only forward and upward from the action posture. Further, as indicated by a virtual line in FIG. 3, when the driven dog body 25 swings rearward and upward from the action posture and switches to the retracted posture, an operation piece 25 b extending to the rear of the driven dog body 25 is provided. The operated piece 27b extending in front of the check dog 27 is pushed up so that the check dog 27 is also switched to the retracted posture.

  A travel path of the intermediate movable body 28 is configured by a guide rail 29 below the travel path of the transport traveling body 1 having the above configuration. The intermediate movable body 28 has a rectangular planar outline, and is supported by two pairs of left and right front and rear support wheels 31 that are respectively fitted to a pair of left and right groove-shaped rails 30 a and 30 b constituting the guide rail 29. In addition, two pairs of left and right positioning rollers 32 adjacent to the pair of left and right grooved rails 30a and 30b are rotatably supported around the vertical axis. The intermediate movable body 28 is provided with a pusher 33 that can be freely engaged with and disengaged from the driven dog 23 that protrudes below the load trolley 7 of the transport traveling body 1. The rollers 34a and 34b are pivotally supported so as to protrude downward around the vertical axis.

  Further, a screw shaft 35 for driving the intermediate movable body 28 is pivotally supported in parallel along the travel path of the intermediate movable body 28 below the travel path of the intermediate movable body 28. The screw shaft 35 is formed by supporting a plurality of screw shafts 36A and 36B having appropriate lengths in a concentric series and interlockingly connected to each other by a connecting shaft 37, and is driven to rotate by a motor 38. . The configuration of each screw shaft unit 36 is not limited, but in the illustrated example, a groove-like spiral portion 41a is formed by a belt-like plate wound spirally around a drive shaft 40 supported at both ends by bearings 39. Is formed by concentrically fixing and integrating the screw main body 41 formed with.

  In FIG. 1, the pair of front and rear driven rollers 34a and 34b of the intermediate movable body 28 are pivotally supported at intervals that can be simultaneously fitted to the groove-like spiral portion 41a of the screw shaft 35 (screw shafts 36A and 36B). . Further, as shown in phantom lines in FIG. 1, the screw shafts 36A and 36B adjacent to each other at the front and rear are simultaneously driven by the rear driven roller 34b from the spiral portion 41a of the rear screw single unit 36B. The axial interval and the phase of the spiral portion 41a are set so that 34a is drawn into the spiral portion 41a of the front screw unit 36A.

  When the axial distance between the screw shafts 36A and 36B adjacent to each other in the front-rear direction and the phase of the spiral part 41a are set as described above, the screw shafts 36A and 36A having different pitches of the spiral part 41a as shown in the figure. By combining 36B, it is possible to provide sections in which the driving speed of the transport traveling body 1 is different in the travel path including the screw shaft 35, with the length of the screw shafts 36A and 36B being the minimum section length. Of course, when the pitches of the spiral portions 41a of the screw shafts 36A and 36B adjacent to each other at the front and back are the same, the distance between the screw shafts 36A and 36B is made narrower than the distance between the pair of front and rear driven rollers 34a and 34b ( However, the phases of the spiral portions 41a of both the screw shafts 36A and 36B are matched), and the front driven roller 34a is moved to the front screw before the rear driven roller 34b is fed out from the spiral portion 41a of the rear screw single unit 36B. It can also be configured to be drawn into the spiral portion 41a of the single unit 36A. When the screw shafts 36A and 36B having different pitches of the spiral portion 41a are combined as described above, the pair of front and rear driven rollers 34a and 34b on the intermediate movable body 28 side can be fitted to the spiral portion 41a at the same time. Naturally, the pitch of the spiral portions 41a of the screw shafts 36A and 36B is set.

  According to the conveying device having the above-described configuration, the screw shaft 35 is rotationally driven in a predetermined direction by the motor 38, whereby the pair of front and rear driven rollers 34a are provided on the spiral portions 41a of the screw shafts 36A and 36B constituting the screw shaft 35. , 34 b are fitted along the guide rail 29 at a speed determined by the pitch of the spiral portion 41 a and the rotational speed of the screw shaft 35.

  Accordingly, the height at which the pusher 33 of the intermediate movable body 28 is engaged with the driven dog 23 on the transport traveling body 1 side, that is, the upper end of the pusher 33 is fitted between the driven dog body 25 and the check dog 27. If the travel path of the intermediate movable body 28 and the travel path of the transport traveling body 1 are set so as to move at the height possible, the pusher 33 of the intermediate movable body 28 moving forward is stopped. The check dog 27 on the rear side of the driven dog 23 of the traveling body 1 is pushed upward while passing through the lower side of the check dog 27 and comes into contact with the rear side surface of the driven dog body 25 in the working posture. The transport traveling body 1 is pushed and driven in the forward direction via the driven dog body 25 in the acting posture. At this time, the check dog 27 pushed up to the retracted position by the pusher 33 returns to the original acting position by gravity, and the pusher 33 is sandwiched between the driven dog body 25 and the transport traveling body 1 is It cannot be moved forward relative to the pusher 33. Therefore, the transport traveling body 1 can be moved forward at the traveling speed of the pusher 33 (intermediate movable body 28) even in the downward gradient path portion.

  In the state where the intermediate movable body 28 is stopped, when the transport traveling body 1 is moved over the intermediate movable body 28 by any means, the front driven dog body 25 is moved upward against gravity. And the operation piece 25b resists gravity against the check dog 27 on the rear side via the operated piece 27b by swinging the driven dog body 25 to the retracted position at this time. Therefore, the check dog 27 is not engaged with the pusher 33 and the check dog 27 can also pass over the pusher 33. That is, the transport traveling body 1 that moves forward can move forward on the intermediate movable body 28 without engaging with the pusher 33 of the intermediate movable body 28 whose driven dog 23 is stopped. it can.

  The transport traveling body 1 having the above-described configuration has a friction drive surface 20 in which the side surface of the load bar 3 is continuous over the entire length. That is, as shown in FIG. 4, the intermediate movable body 28 and the screw shaft 35 are omitted in the friction drive line, and the friction drive wheel 42 pressed against the friction drive surface 20 of the load bar 3 and the friction drive wheel 42 are rotationally driven. The friction drive unit 44 including the motor 43 is disposed in the travel path of the transport traveling body 1 at an interval shorter than the entire length of the load bar 3, for example. Therefore, the transport traveling body 1 sent to the friction drive line is driven forward by the friction drive wheel 42 rotating against the friction drive surface 20 of the load bar 3. The friction drive unit 44 is usually used in combination with a backup roller that sandwiches the load bar 3 with the friction drive wheel 42. Further, in the section in which the transport traveling body 1 travels in a continuous manner, the friction drive unit 44 is disposed only at the entrance of the section, and the transport travel is performed only at a constant speed at the exit of the section. A friction drive unit with a braking function for feeding the body 1 is provided.

  Further, since the load traveling trolley 7 includes the driven dog 23, the transport traveling body 1 having the above-described configuration can be driven by a chain conveyor drive even in a conventionally known chain conveyor drive line. That is, as shown in FIG. 5, in the chain conveyor drive line, the intermediate movable body 28 and the screw shaft 35 are omitted, and the pusher engaged with the driven dog 23, that is, the pusher 33 provided on the intermediate movable body 28 is the same. Conveyor chains 46 provided with appropriate pushers 45 at appropriate intervals are stretched along the travel path of the transport traveling body 1. Specifically, trolleys 47 are attached to the conveyor chain 46 at appropriate intervals, and the conveyor chain 46 can be rotated to a guide rail 48 installed along an endless circulation path via the trolley 47. Is supported by the motor, and is rotated by the motor along the endless circulation path. The required region of the guide rail 48 that constitutes the endless circulation path is the area of the transport traveling body 1. It is arranged along the travel route. Therefore, in the transport traveling body 1 sent to the chain conveyor drive line, the pusher 45 of the conveyor chain 46 moving along the guide rail 48 is driven similarly to the pusher 33 of the intermediate movable body 28. By automatically engaging between the driven dog body 25 and the check dog 27 of the dog 23, the dog 23 is driven forward by the pusher 45.

  Next, an embodiment in which the screw drive line SD shown in FIGS. 1 to 3 is incorporated in the middle of the chain conveyor drive line will be described with reference to FIGS. The screw drive line SD is provided with a return line BL of the intermediate movable body 28, and between the return line BL and the screw drive line SD, and between the screw drive line SD and the return line BL. Between them, traversers 49 and 50 for conveying the intermediate movable body 28 in the lateral direction are disposed, and a rectangular circulation travel path of the intermediate movable body 28 is configured. These traversers 49, 50 are guide rails 55 connected to the guide rails 15 laid on the screw drive lines SD on the lateral movement bases 53, 54 that are driven by motors or the like on the guide rails 51, 52 to reciprocate. , 56 are laid.

  As with the screw drive line SD, the return line BL is not limited to a guide rail 57 that supports and guides the intermediate movable body 28 and a chain conveyor with a pusher that drives the intermediate movable body 28 on the guide rail 57 to travel. Drive means 58 is provided, and on the entrance side of the screw drive line SD, an intermediate movable body 28 for sending the intermediate movable body 28 onto the guide rail 15 of the screw drive line SD from the lateral movement table 53 (guide rail 55) of the traverser 49. A body feed means 59 is also provided, and an intermediate movable body feed means 60 for sending the intermediate movable body 28 onto the lateral movement table 54 (guide rail 56) of the traverser 50 is provided at the outlet side of the screw drive line SD. On the entrance side of the return line BL from the side table 54 (guide rail 56) of the traverser 50 Intermediate movable body feeding means 61 for feeding the intermediate movable body 28 onto the guide rail 57 of the return line BL is provided, and the intermediate movable body 28 is placed on the lateral movement base 53 (guide rail 55 of the traverser 49) on the exit side of the return line BL. ) An intermediate movable body feeding means 62 for feeding upward is also provided.

  The chain conveyor drive line TC1 on the entrance side of the screw drive line SD is composed of the conveyor chain 46 with pusher described based on FIG. 5, and the pusher 45 is removed from the driven dog 23 in the transporting traveling body 1. Since it is sent to the feed end position P1 and stops, the transporting travel body feeding means 63 for feeding the transport traveling body 1 stopped at the feed end position P1 to the drive start position P2 on the entrance side of the screw drive line SD is also provided. Has been. As shown in FIG. 6, the driving start position P2 at which the traveling traveling body feeding means 63 feeds the traveling traveling body 1 is supported on the lateral movement base 53 of the traverser 49 and connected to the entrance of the screw drive line SD. This is the position where the driven dog 23 on the transport traveling body 1 side has passed forward from the pusher 33 of the intermediate movable body 28 waiting at the position.

  On the outlet side of the screw drive line SD, the intermediate movable body 28 driven from the screw shaft 35 of the screw drive line SD to the screw drive end position P3 where the driven roller 34b on the rear side is removed is the intermediate movable body feed means 60. Is sent to the feed end position P4 on the lateral movement base 54 (guide rail 56) of the traverser 50 waiting at the position connected to the screw drive line SD, and as a result, travel drive is performed in the screw drive line SD. The transporting traveling body 1 thus delivered is sent out to the feeding end position P4. The chain conveyor drive line TC2 on the lower side of the screw drive line SD is also composed of the conveyor chain 46 with pusher described with reference to FIG. 5, and the pusher 45 is automatically engaged with the driven dog 23 of the transport traveling body 1. The drive start position P5 at which the drive is started is a position that is an appropriate distance ahead of the feed end position P4, and the transport traveling body 1 is sent from the feed end position P4 to the drive start position P5. A transport traveling body delivery means 64 is also provided.

  Each of the intermediate movable body feeding means 59 to 62 and the transporting traveling body sending means 63 and 64 may be a chain conveyor with a pusher or a type in which the pusher is reciprocally driven by a fluid pressure cylinder.

  According to the above configuration, as shown in FIG. 6, the transport traveling body 1 sent to the feed end position P1 by the chain conveyor drive line TC1 is sent to the drive start position P2 by the transport traveling body feeding means 63. At this time, the intermediate movable body 28 is located at the standby position P6 below the moving path of the transport traveling body 1, that is, at the standby position P6 supported on the lateral movement base 53 of the traverser 49 and connected to the entrance of the screw drive line SD. When waiting, as described above with reference to FIG. 3, the driven dog 23 on the transport traveling body 1 side passes forward with respect to the pusher 33 of the intermediate movable body 28. Of course, after the transport traveling body 1 has been sent to the drive start position P2, the lateral movement base 53 of the traverser 49 is operated, and the intermediate movable body 28 is placed at the standby position P6 connected to the entrance of the screw drive line SD. It is also possible to send in.

  Next, when the intermediate movable body 28 located at the standby position P6 connected to the entrance of the screw drive line SD on the lateral movement table 53 of the traverser 49 is fed toward the screw drive line SD by the intermediate movable body feed means 59, The pusher 33 of the intermediate movable body 28 automatically engages with the driven dog 23 of the transport traveling body 1 waiting at the drive start position P <b> 2, and the intermediate movable body 28 is for transport via the pusher 33 and the driven dog 23. The traveling body 1 is sent to the drive start position P7 of the screw drive line SD shown in FIG.

  The configuration is such that the driven roller 34a on the front side of the intermediate movable body 28 sent to the drive start position P7 of the screw drive line SD is smoothly and reliably fitted into the spiral portion 41a of the screw shaft 35 that is rotationally driven. This is extremely difficult because the timing at which the intermediate movable body 28 reaches the drive start position P7 is not specified. Therefore, in this embodiment, as shown in FIG. 8, a screw shaft single unit 36C dedicated to pulling in the intermediate movable body is arranged at the entrance of the screw drive line SD.

  The single screw shaft 36 </ b> C is interlocked and connected to the subsequent screw shaft 35 via an intermediate transmission shaft 65 and an electromagnetic clutch 66. This electromagnetic clutch 66 is engaged only at one position during one rotation by a clutch engagement signal, and the phase of the spiral portion 41a of the lower screw shaft 35 and the spiral portion 41a of the screw shaft single unit 36C are in agreement with each other, In a state where the pair of front and rear driven rollers 34a and 34b of the intermediate movable body 28 can be engaged across the screw shaft unit 36C and the lower screw shaft 35, the screw shaft unit 36C and the lower screw shaft 35 are connected to each other. To be connected. Then, when the screw shaft single unit 36C starts to rotate, the driven roller 34a on the front side of the intermediate movable body 28 can be surely and smoothly fitted into the spiral portion 41a of the screw shaft single unit 36C. The end 41b of the spiral belt-shaped plate constituting the screw body 41 is cut in parallel with the axis, and the end 41b waits at a position where it does not interfere with the driven roller 34a on the front side of the intermediate movable body 28. As described above, the timing for disengaging the electromagnetic clutch 66 is set.

  According to the above configuration, after the intermediate movable body 28 is sent to the drive start position P7 of the screw drive line SD by the intermediate movable body feed means 59, the electromagnetic clutch 66 is inserted and the intermediate movable body at the entrance of the screw drive line SD is inserted. By rotating the single screw shaft 36C dedicated for retraction with power from the lower screw shaft 35, the driven roller 34a on the front side of the intermediate movable body 28 that has reached the driving start position P7 is moved to the spiral portion 41a of the single screw shaft 36C. And the traveling drive of the intermediate movable body 28 in the screw drive line SD is started. Note that the intermediate movable body feeding means 59 appropriately moves the intermediate movable body 28 that has reached the drive start position P7 in order to securely fit the driven roller 34a on the front side of the intermediate movable body 28 into the spiral portion 41a of the screw shaft single unit 36C. It is desirable to be able to urge in the forward direction with a strong force.

  The intermediate movable body 28 that has started traveling in the screw drive line SD as described above is inferior to the lower side due to the engagement between the pair of front and rear driven rollers 34a and 34b and the screw shaft single body 36C dedicated to pulling in the intermediate movable body. Is continuously driven at a predetermined speed along the screw drive line SD by the engagement between the lower screw shaft 35 and the pair of front and rear driven rollers 34a and 34b. The Between the screw shaft single unit 36C dedicated to pulling in the intermediate movable body and the screw shaft 35 on the lower side, the phases of the spiral portions 41a coincide with each other as described above, so that the intermediate movable body 28 is smoothly transferred. Is called. Then, after the rear driven roller 34b is disengaged from the single screw shaft 36C dedicated to retracting the intermediate movable body, the electromagnetic clutch 66 is disengaged at the predetermined timing as described above, and the single screw shaft dedicated to retracting the intermediate movable body. 36C is stopped at a predetermined phase to prepare for the next pulling of the intermediate movable body 28.

  In addition, the spiral belt-shaped plate which comprises the screw main body 41 is cut | disconnected at right angles with respect to an axial center at the start end part of the screw shaft 35, and it comprises so that the spiral part 41a may open at one place of the circumferential direction, and is movable intermediately When the intermediate movable body 28 is fed to the drive start position P7 of the screw drive line SD by the body feed means 59, the front driven roller 34a moves forward with an appropriate force on the edge of the screw body 41 at the start end of the screw shaft 35. If the intermediate movable body feed means 59 can be configured so that it can be pressed against the intermediate movable body, the intermediate movable body fed into the drive start position P7 even if the screw shaft 36C dedicated to retracting the intermediate movable body is omitted. 28, the driven roller 34a on the front side is directly engaged with the spiral portion 41a of the screw shaft 35 being driven to rotate. It can be started.

  As described above, the intermediate movable body 28 that enters the screw drive line SD from the standby position P6 by the intermediate movable body feeding means 59 and the single screw shaft 36C dedicated to retracting the intermediate movable body is engaged with the pusher 33 and the pusher 33. Since the transport traveling body 1 is integrally driven via the driven dog 23, the transport traveling body 1 driven to travel to the feed end position P1 by the chain conveyor drive line TC1 is continuously driven by the screw. Traveling driving is performed on the line SD.

  As shown in FIG. 7, when the transport traveling body 1 reaches the end of the screw drive line SD and the intermediate movable body 28 is detached from the screw shaft 35 and stops at the screw drive end position P3, the intermediate movable body feeding means 60 The intermediate movable body 28 is fed from the screw drive end position P3 to the feed end position P4, and the intermediate movable body 28 is made to stand by at a position connected to the outlet of the screw drive line SD. 56) Transfer to the top. Thereafter, when the lateral moving base 54 of the traverser 50 is driven and the intermediate movable body 28 thereon is laterally retracted laterally, the intermediate movable body 28 moves to the feed end position P4 integrally with the intermediate movable body 28 and stops. Since the pusher 33 of the intermediate movable body 28 is disengaged laterally from the driven dog 23 (between the driven dog body 25 and the check dog 27) of the transporting traveling body 1, the transporting traveling body is next sent out. By operating the means 64, the transporting traveling body 1 stopped at the feed end position P4 can be sent to the drive start position P5 by the lower chain conveyor drive line TC2. The transport traveling body 1 sent to the drive start position P5 is automatically engaged with the driven dog 23 on the transport traveling body 1 side by the rotation of the conveyor chain 46 of the chain conveyor drive line TC2. The chain conveyor drive line TC2 is continuously driven.

  In the embodiment shown in FIGS. 6 and 7, the screw drive line SD is arranged between the chain conveyor drive lines TC1 and TC2. However, as shown in FIG. The screw drive line SD can also be arranged in In this case, as shown by the phantom line in FIG. 6, the transport traveling body 1 sent out from the friction drive line on the upper side of the screw drive line SD is sent out to the standby position P6 by the friction drive unit 44 at the final stage. At the same time, the transport traveling body 1 can be stopped at the standby position P6 by stopping the driving of the friction drive wheels 42 of the friction drive unit 44, so that the transport traveling body feeding means 63 can be omitted. Similarly, as shown by the phantom line in FIG. 7, when the transport traveling body 1 is sent out together with the intermediate movable body 28 from the screw drive end position P3 to the feed end position P4, the friction drive wheel 42 is in a free state. The friction drive unit 44 is disposed at a position where the load bar 3 of the transport traveling body 1 enters the unit 44, and the intermediate movable body 28 is transported laterally by the lateral movement table 54 of the traverser 50, and then the friction. Since the drive unit 44 is operated and the transport traveling body 1 can be traveled directly on the friction drive line from the feed end position P4, the transport traveling body feeding means 64 can be omitted.

  The intermediate movable table 28 carried out laterally by the lateral moving table 54 of the traverser 50 is transported to the entrance of the return line BL by the horizontal moving table 54, and then on the horizontal moving table 54 by the intermediate movable body feeding means 61. Is sent to the return line BL, taken over by the driving means 58, and conveyed in the reverse direction on the return line BL. Thereafter, the intermediate movable body 28 that has reached the outlet of the return line BL is sent out onto the lateral movement table 53 of the traverser 49 by the intermediate movable body delivery means 62, and the lateral movement of the lateral movement table 53 causes the screw drive line SD to move. Is returned to the standby position P6 adjacent to the entrance. A plurality of intermediate movable bases 28 are arranged in the rectangular circulation path of the intermediate movable body 28 constituted by the screw drive line SD, the return line BL, and the traversers 49, 50. In addition, the plurality of transport traveling bodies 1 can be driven to travel at required intervals, and the return line BL is driven to drive the intermediate movable body 28 by the driving means 58 at a speed higher than the traveling speed on the screw drive line SD. It can be configured to be able to. Of course, in the return line BL, a driving means 58 that can store a plurality of intermediate movable bodies 28 on the outlet side thereof is used, and the lateral movement base 54 of the traverser 49 can receive the intermediate movable bodies 28. In this case, the intermediate movable body 28 may be sent from the head of the stored intermediate movable body 28 onto the lateral movement table 54 by the intermediate movable body delivery means 62.

  Further, in the above embodiment, the intermediate movable body 28 is circulated in a rectangular circulation path along the horizontal plane constituted by the screw drive line SD and the return line BL and the traversers 49 and 50. A return line BL is arranged below the line SD, and a lifter for moving the intermediate movable body 28 up and down is provided instead of the traversers 49 and 50, and the intermediate movable body 28 is circulated along a rectangular circulation path along a vertical plane. You may comprise so that it may be made.

  In the above embodiment, the intermediate movable body 28 is provided with a pair of front and rear driven rollers 34a and 34b that engage with the spiral portion 41a of the screw 35, but a single driven roller may be provided. In this case, when the screw shaft 35 is composed of a plurality of screw shafts arranged in series at intervals from each other, the screw shaft dedicated for transfer is located at a position laterally separated from the screw shaft. In addition, the intermediate movable body 28 may be pivotally supported by a dedicated transfer roller that engages with the transfer-specific screw shaft. According to this configuration, in one continuous screw shaft (screw shaft alone), the transport pitch of the intermediate movable body 28 (transport traveling body 1) can be changed by changing the pitch of the spiral portion 41a.

  Further, the pusher 33 on the intermediate movable body 28 side and the driven dog 23 on the transport traveling body 1 side only need to be detachable from each other. For example, the driven dog 23 on the transport traveling body 1 side is turned upside down. The driven dog body 25, which is attached to the intermediate movable body 28 and held in the acting posture by using a spring together as necessary, corresponds to a pusher, and the pusher 33 on the intermediate movable body 28 side is used as a transport traveling body. By attaching it downward on one side (front load trolley 7) and corresponding to a driven dog, the same operation as in the above embodiment can be realized. When adopting such a configuration, when combined with a chain conveyor drive line, the conveyor dog pusher constituting the chain conveyor drive line has the driven dog 23 turned upside down and back and forth to the intermediate movable body 28. You will need something similar to the one you installed.

  The conveyance device using the traveling body for conveyance of the present invention is combined with a friction drive line suitable for high-speed traveling drive, a chain conveyor drive line with excellent heat resistance, etc., taking advantage of a screw drive system that can vary the conveyance pitch. It can be used for painting and drying lines of automobile bodies.

DESCRIPTION OF SYMBOLS 1 Transporting body 2 Conveyed object support stand 3 Load bar 4-6 Load bar single unit 7,8 Load trolley 9 Front end trolley 10 Rear end trolley 15,29,48,51,52,55-57 Guide rail 20 Friction drive Surface 23 Driven dog 25 Driven dog body 27 Check dog 28 Intermediate movable body 33, 45 Pushers 34a, 34b Driven roller 35 Screw shaft 36a to 36C Screw shaft unit 37 Connecting shaft 38, 43 Motor 42 Friction drive wheel 44 Friction drive unit 46 Conveyor chain 49, 50 Traverser 53, 54 Horizontal moving table 58 Drive means 59-62 Intermediate movable body feed means 63, 64 Transport body feed means 66 Electromagnetic clutch SD Screw drive line BL Return line TC1, TC2 Chain conveyor drive line IN W Conveyed object

Claims (4)

Conveyance traveling in which a traveling roller is propelled by a driven roller that engages with a spiral portion of a screw shaft supported along a traveling path of the conveying traveling body and is fed in the axial direction of the screw shaft by the rotation of the screw shaft. a conveying apparatus body use, the between the screw shaft and the traveling route of the conveying traveling body, a movable intermediate movable member is provided on the screw shaft axis direction, the axis of the driven roller to the intermediate movable member In the conveying device using the conveying traveling body provided with the conveying traveling body propulsion pusher and the driven dog that is detachably engaged with the pusher is provided in the conveying traveling body,
The pusher of the intermediate movable body and the driven dog of the transport traveling body are configured in a non-return structure that allows the driven dog to pass over the pusher but not vice versa, and is an entrance of a drive section provided with the screw shaft The intermediate movable body feeding means for feeding the intermediate movable body stopped before the entrance of the drive section to a position where the driven roller engages with the screw shaft, and stopped before the entrance of the drive section. A transporting device using a transporting traveling body is provided with transporting transporting body feeding means for feeding the transporting traveling body to a position where the driven dog precedes the pusher of the intermediate movable body . Conveyance traveling in which a traveling roller is propelled by a driven roller that engages with a spiral portion of a screw shaft supported along a traveling path of the conveying traveling body and is fed in the axial direction of the screw shaft by the rotation of the screw shaft. An intermediate movable body movable in the axial direction of the screw shaft between the screw shaft and the traveling path of the conveying traveling body, and the driven roller is pivoted on the intermediate movable body. In the conveying device using the conveying traveling body provided with the conveying traveling body propulsion pusher and the driven dog that is detachably engaged with the pusher is provided in the conveying traveling body,
On the exit side of the drive section provided with the screw shaft, an intermediate movable body feed means for moving the intermediate movable body sent out from the drive section in a direction perpendicular to the travel path of the transport traveling body, and intermediate movable and delivery means conveying traveling body for feeding the conveying traveling body after the body has left the traveling path of the downstream side are juxtaposed, conveyance traveling body utilization conveying device. Conveyance traveling in which a traveling roller is propelled by a driven roller that engages with a spiral portion of a screw shaft supported along a traveling path of the conveying traveling body and is fed in the axial direction of the screw shaft by the rotation of the screw shaft. An intermediate movable body movable in the axial direction of the screw shaft between the screw shaft and the traveling path of the conveying traveling body, and the driven roller is pivoted on the intermediate movable body. In the conveying device using the conveying traveling body provided with the conveying traveling body propulsion pusher and the driven dog that is detachably engaged with the pusher is provided in the conveying traveling body,
The drive section provided with the screw shaft is a friction drive line that uses a friction drive surface that is provided to be continuous over the entire length of the conveyance traveling body and a friction drive wheel that rotates in pressure contact with the friction drive surface. are connected, conveyance traveling body utilization conveying device. Conveyance traveling in which a traveling roller is propelled by a driven roller that engages with a spiral portion of a screw shaft supported along a traveling path of the conveying traveling body and is fed in the axial direction of the screw shaft by the rotation of the screw shaft. An intermediate movable body movable in the axial direction of the screw shaft between the screw shaft and the traveling path of the conveying traveling body, and the driven roller is pivoted on the intermediate movable body. In the conveying device using the conveying traveling body provided with the conveying traveling body propulsion pusher and the driven dog that is detachably engaged with the pusher is provided in the conveying traveling body,
It said drive section having a screw shaft, the is connected to a chain conveyor drive line having a disengageably pusher against the driven dog, conveyance traveling body utilization conveying apparatus of the conveying traveling body.

Images