JP2009263019A - Screw drive conveying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screw drive conveying device capable of smoothly transferring a conveying body to a screw shaft while simplifying a constitution, continuously conveying it at a high speed, independently controlling a conveying speed of the conveying body between a plurality of conveying sections and arbitrarily controlling a conveying interval of the conveying body transferred between the respective conveying sections. <P>SOLUTION: In the screw drive conveying device, an engagement part of the conveying body 120 is engaged with a helical groove 130 of a screw shaft 110 and is conveyed. The plurality of screw shafts 110 are arranged in series in a conveying direction, and drive devices 130 of the respective screws 110 can independently rotate/drive the plurality of screw shafts 110. The device has a conveying interval control means 160 for controlling the transfer timing. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a screw drive transport device that rotates and drives a screw shaft having a spiral feed member on a circumferential surface, and engages a feed body with an engaging portion of a transport body to transport the transport body.

  Conventionally, as a transport device that transports and transports a transport body by an external driving force, a pair of rails, a screw shaft provided in parallel between the pair of rails, a wheel that travels on the rail, and a screw shaft 2. Description of the Related Art A screw-driven transfer device is known that includes a carriage-like transfer body having an engagement portion that engages with a spiral feed member, and is configured to rotate a screw shaft to move the transfer body on a rail. ing.

  As shown in FIGS. 12 to 14, these screw drive conveyance devices 500 include a pair of left and right guide rails 502 laid on a base portion 501 and screws provided in a cover body 503 between both guide rails 502. It comprises a shaft 510 and a transporting body 520 that has wheels 521 and is supported and guided by both guide rails 502 and can travel.

  The conveying body 520 is provided with an engaging roller 523 guided by the guide body 522 so as to be movable up and down, and the screw shaft 510 is provided with a spiral plate 511 spirally on the cylindrical surface. When the screw shaft 510 is rotationally driven by a driving device (not shown) while the 523 is engaged with the spiral plate 511 of the screw shaft 510 from above, the conveying body 520 is supported and guided by the guide rail 502 and travels.

  Further, as shown in FIG. 14, the screw drive conveyance device 500 forms the pitches P1 and P2 of the spiral plate 511 of the screw shaft 510 so as to be different depending on the portion, so that the rotational speed of the screw shaft 510 is not changed. It is configured to change the traveling speed of the conveyance body 520, and the engagement roller 523 of the conveyance body 520 is moved up and down so that the spiral plate 511 and the engagement roller 523 can be engaged and disengaged. It is comprised so that driving | running | working / stop of the conveyance body 520 can be selected (for example, refer patent document 1).

  Further, in a screw drive conveying device that rotates and drives a screw shaft having a spiral feeding member on a circumferential surface, and engages the engaging portion of the conveying member with the helical feeding member to convey the conveying member, the screw shaft Are also known which are arranged in series in the transport direction.

  As shown in FIGS. 15 to 17, these screw drive conveyance devices 600 have a pair of left and right guide rails 602, a screw shaft 610 provided between both guide rails 602, and wheels 621, and both guide rails 602. The carrier 620 is supported and guided by the vehicle and can travel freely.

  A plurality of screw shafts 610 are provided along a closed-loop-shaped conveyance path 650, and a chain conveyor 604 is provided between both guide rails 602 over the entire conveyance path 605.

  The conveying body 620 is provided with an engaging roller 623, the screw shaft 610 is provided with a spiral plate 611 in a spiral shape on the cylindrical surface, and the engaging roller 623 of the conveying body 620 is provided on the spiral plate 611 of the screw shaft 610. When the screw shaft 610 is rotationally driven in an engaged state from above, the transport body 620 is supported and guided by the guide rail 602 and travels.

  Further, the carrier 620 is provided with a hook 625 that swings up and down, the dog 605 is provided on the chain conveyor 604, and the hook 625 of the carrier 620 is engaged with the dog 605 of the chain conveyor 604 from above. When the chain conveyor 604 is driven in this state, the transport body 620 is supported and guided by the guide rail 602 and travels.

The conveying operation of these screw drive conveying devices 600 will be described below.
The carrier 620 at the standby positions 651a, 651b, 651c, and 651d has the carriage roller 626 lifted by the carriage rail 606, the carriage link 627 swings upward, and the hook 625 is lifted in conjunction with the carriage 620. The conveyor 620 leaves the dog 606 of the conveyor 604 and stops.

  The transport body 620 at the standby positions 651a, 651b, 651c, and 651d is pushed by the cylinders 607a, 607b, 607c, and 607d while the screw shafts 610a, 610b, 610c, and 610d are stopped, respectively, and the insertion positions 652a, 652b, 652c, and 652d The operation is stopped in a state where the engaging roller 623 is pressed against the spiral plate 611 of the screw shafts 610a, 610b, 610c, 610d at the insertion position.

When the screw shafts 610a, 610b, 610c, and 610d are rotated in this state, the respective engagement rollers 623 are engaged with the respective spiral plates 611, and the conveyance body 620 advances by the rotation of the screw shafts 610a, 610b, 610c, and 610d. To do.
The transport body 520 is transported to the disengagement position 654 while stopping at the stop positions 653a to 653i and performing a predetermined work. When reaching the disengagement position 654, the engagement roller 623 is disengaged from the screw shafts 610a, 610b, 610c, and 610d.

When the conveyance body 520 reaches the disengagement position 654, the engagement roller 623 is disengaged from the screw shafts 610a, 610b, 610c, 610d, the carriage roller 626 is disengaged from the carriage rail 606, and the carriage link 627 is swung downward. Since the hook 625 is lowered, the dog 606 of the chain conveyor 604 is engaged with the hook 625, and the conveyance body 520 moves forward by being pulled by the chain conveyor 604 (for example, see Patent Document 2).
JP-A-9-58463 (pages 3 to 4, FIG. 1, FIG. 3, FIG. 6) JP 2001-122422 A (page 4, FIG. 2, FIG. 3, FIG. 5)

  However, the conventional screw drive conveyance device 500 described in the previous section changes the traveling speed depending on the position by providing sections with different pitches, or changes the traveling speed by controlling the rotational speed of the screw shaft. It is possible to control the travel of the transport body, but when traveling a plurality of transport bodies at the same time, the travel of each transport body is controlled independently and the transport interval cannot be arbitrarily controlled. There was a problem.

  In addition, the conventional screw-driven transport device 600 described in the latter stage controls the rotational speeds of the plurality of screw shafts independently, thereby causing the plurality of transport bodies to travel simultaneously, and the travel of each transport body to be performed independently. It is possible to control the transfer interval arbitrarily, but when the transfer body transfers between the plurality of screw shafts, a section where the driving drive by the screw shaft is not performed is set. There is a problem that the entire apparatus is complicated.

  Furthermore, in the conventional screw drive conveyance device 600, the conveyance body needs to be temporarily stopped at the time of connection from the screw shaft to another drive mechanism when the conveyance body transfers between the screw shafts, or from another drive mechanism to the next screw shaft. There is a problem that it is difficult to carry out the transfer continuously at a high speed.

  The present invention solves the problems of the prior art as described above, that is, an object of the present invention is to run a plurality of transport bodies simultaneously and to control the travel of each transport body independently. In addition to simplifying the configuration of the apparatus, the transport body can smoothly transfer the screw shaft, can be transported continuously at a high speed, and the transport speed of the transport body in a plurality of transport sections It is providing the screw drive conveyance apparatus which can control independently and can control arbitrarily the conveyance space | interval of the conveyance body which transfers each conveyance area.

  The invention according to claim 1 includes a screw shaft having a spiral feed member on a circumferential surface, a drive device that rotationally drives the screw shaft, and an engagement portion that engages with the spiral feed member. A plurality of screw shafts arranged in series in the transport direction, and a plurality of the drive devices are provided so that the plurality of screw shafts are independent of each other. The above-mentioned problem is solved by having a conveyance interval control means for controlling the timing of connecting the adjacent screw shafts of the conveyance body.

  In addition to the configuration of the screw drive conveyance device described in claim 1, the drive device includes a motor and a rotation transmission means for transmitting the rotation of the motor to the screw shaft. The conveyance interval control means comprises a rotation speed control means for independently controlling the rotation speed of the motor of each driving device, and a synchronization control means for controlling the synchronization / asynchronization of the rotation of the adjacent rotation transmission means. This further solves the above problem.

  In addition to the configuration of the screw drive conveyance device according to claim 2, the invention according to claim 3 includes a clutch capable of connecting and releasing the rotation of the rotation transmission means adjacent to the synchronization control means. The above-mentioned problem is further solved.

  In addition to the configuration of the screw drive conveyance device described in claim 3, the invention according to claim 4 is a single-position type clutch that can be connected in only one phase per rotation. The problem is further solved.

  The present invention includes a screw shaft having a spiral feed member on a circumferential surface thereof, a drive device that rotationally drives the screw shaft, and an engaging portion that engages with the spiral feed member. In a screw-driven transport device having a transport body that is transported by rotation, a plurality of screw shafts are arranged in series in the transport direction so that when the plurality of transport bodies are traveled simultaneously, the travel of the transport body is controlled by the screw shaft. Each can be set individually, and the following special effects can be achieved.

  That is, the screw drive conveyance device of the invention according to claim 1 is configured such that a plurality of screw shafts are arranged in series in the conveyance direction, and a plurality of drive devices are provided so that the plurality of screw shafts can be independently rotated. In addition, by having a transport interval control means for controlling the timing of transferring the screw shaft of the transport body, when a plurality of transport bodies are run simultaneously, the transport speed of the transport body can be independently controlled in a plurality of transport sections. In addition, it is possible to arbitrarily control the transfer interval of the transfer body that transits each transfer section.

  The screw driving and conveying apparatus according to the second aspect of the invention has the rotation transmission in which the driving apparatus transmits the motor and the rotation of the motor to the screw shaft, in addition to the effect exhibited by the screw driving and conveying apparatus according to the second aspect. A rotation speed control means for independently controlling the rotation speed of the motor of each driving device, and a synchronization for controlling the synchronization / asynchronization of the rotation of the adjacent rotation transmission means. Consisting of the control means, when the transfer body does not need to go through another drive mechanism when connecting between the screw shafts, it is possible to transfer smoothly while simplifying the configuration of the device, and temporarily stops for connection Since it is not necessary to carry out, a conveyance body can be conveyed continuously at high speed.

  In addition to the effect produced by the screw drive and transport device according to claim 2, the screw drive and transport device of the invention according to claim 3 is a clutch capable of connecting and releasing the rotation of the adjacent rotation transmission means by the synchronization control means. Since the synchronization control means can be configured by adding a simple configuration, the configuration of the entire apparatus can be simplified.

  Furthermore, the screw drive conveyance device of the invention according to claim 4 is a single position type clutch which can be connected only at one phase per one rotation in addition to the effect exhibited by the screw drive conveyance device according to claim 3. As a result, the rotation phase of the screw shaft is synchronized only by the clutch connecting / disengaging operation, so that the synchronization control means is further simplified.

  The present invention includes a screw shaft having a spiral feed member on a circumferential surface thereof, a drive device that rotationally drives the screw shaft, and an engaging portion that engages with the spiral feed member. In a screw drive conveyance device having a conveyance body conveyed by rotation, a plurality of the screw shafts are arranged in series in the conveyance direction, and a plurality of the drive devices are provided so that the plurality of screw shafts can be independently driven to rotate. It has a synchronous control means that is configured to rotate and synchronize the rotational speed and rotational phase of adjacent screw shafts, and allows a plurality of transport bodies to travel simultaneously, so that each transport body travels independently. It is possible to perform control and simplify the configuration of the apparatus, while the transfer body can smoothly transfer the screw shaft and can be continuously transferred at high speed. As long as it exhibits cormorants effect, specific embodiments thereof are may any be any one.

That is, the plurality of screw shafts of the screw drive conveyance device of the present invention may be all the same length or different lengths as long as they are independently driven to rotate. Also, a plurality of screw shafts having the same length may be connected and used as different lengths.
Moreover, the drive apparatus of the screw drive conveyance apparatus of this invention may be provided one by one in the screw shaft driven to rotate independently, and may be provided in multiple numbers.

  Furthermore, the synchronous control means of the drive device of the screw drive conveyance device of the present invention may be any device as long as it can control the rotation speed and the rotation phase, and may be a control circuit that performs all electronically, and mechanically. In the case of a clutch, a fluid pressure drive clutch or an electromagnetic clutch may be used.

Below, the screw drive conveyance apparatus which is an Example of this invention is demonstrated based on drawing.
FIG. 1 is a perspective view of a screw drive transport apparatus according to an embodiment of the present invention, FIG. 2 is a side view of the screw drive transport apparatus according to an embodiment of the present invention, and FIG. FIG. 4 is a plan view of a conveyance body of a screw drive conveyance apparatus according to an embodiment of the present invention, and FIG. 4 is a front view of the conveyance body of a screw drive conveyance apparatus according to an embodiment of the present invention. FIG. 6 is a side view of a transport body of a screw drive transport apparatus according to an embodiment of the present invention, FIG. 6 is a plan view of the screw drive transport apparatus according to an embodiment of the present invention, and FIG. FIG. 8 is a side view of a screw shaft of a screw drive transport device that is an embodiment of the present invention, and FIG. 9 is an embodiment of the present invention. It is sectional drawing of the screw shaft of a certain screw drive conveyance apparatus. Figure 10 is a developed view of the screw shaft of the screw drive conveyor apparatus according to an embodiment of the present invention, FIG 11 is a diagram illustrating the operation of the screw drive conveyor apparatus according to an embodiment of the present invention.

  As shown in FIG. 1 and FIG. 2, a screw drive conveying apparatus 100 according to an embodiment of the present invention includes a pair of left and right guide rails 102 laid on a base portion 101, and screws provided on both guide rails 102. A driving device comprising a shaft 110, a carrier 120 having wheels 121 supported and guided by both guide rails 102, and a motor 131, and a rotation transmitting means 140 for transmitting the rotation of the motor 131 to the screw shaft 110. As shown in FIG. 7, a plurality of screw shafts 110 are arranged in series in the transport direction, and a plurality of driving devices 130 are also provided.

  As shown in FIGS. 3 to 5, the transport body 120 includes a transport body frame 124 having wheels 121 on which articles can be placed and supported and guided by the guide rails 102. A guide body 122 having a combination roller 123 is provided.

  The engaging roller 123 is held by the guide body 122 so as to be engaged with the screw shaft 110 from the side, and the guide body 122 is provided with at least one pair in the traveling direction of the conveying body frame 124 and two pairs in the rear. Each pair of guide bodies is provided so that the engagement rollers 123 are positioned on both the left and right sides of the screw shaft 110 around a half pitch of the spiral.

  The distance between the pair of guide bodies 122A, 122B in the front in the traveling direction and the pair of guide bodies 122C, 122D in the rear in the traveling direction is such that a plurality of adjacent screw shafts 110 are arranged in series. It is set wider than the interval.

  The motor 131 is arranged at a position laterally away from the screw shaft 110, and the rotation of the motor 131 is transmitted to the screw shaft 110 by the rotation transmitting means 140. As shown in FIG. Are arranged so as to be orthogonal to the screw shaft 110, so that motors 131 for driving the adjacent screw shafts 110 are arranged adjacent to each other in parallel.

  In rotation transmission means 140, in order from the motor 131 side, the output shaft 132 of the motor 131 is connected to the gear box 141 via a joint 146, the gear box 141 is connected to the drive shaft 142 via a universal joint 144, and the drive shaft. 142 is connected to the final gear 143 via the universal joint 145, and the output of the final gear 143 is configured to drive the screw shaft 110.

  The drive shaft 142 is configured to be freely extendable and connected at both ends via universal joints 144 and 145, so that the relative positional relationship between the motor 131 and the gear box 141 that are drive sources and the screw shaft 110 is established. It can be changed according to the installation space.

  The gear box 141 is provided with a clutch shaft 147 on the adjacent rotation transmission means 140 side, and the gear ratio of the gear box 141 is set so that the clutch shaft 147 rotates at the same rotational speed as the screw shaft 110. ing.

  The clutch shaft 147 of the gear box 141 of the adjacent rotation transmission means 140 is configured to connect and release the rotation by a single position type clutch 148. At the time of release, the adjacent screw shaft 110 is connected to each motor. Rotation drive control is independently performed by 131, and at the time of connection, adjacent screw shafts 110 are driven with a predetermined rotation phase and the same rotation speed.

  Since the motor 131 and the single position type clutch 148 are installed at positions separated laterally, it is possible to provide a wall or the like that penetrates only the drive shaft 142 in the middle to isolate the transfer line from the transfer line. The motor 131 and the single position clutch 148 can be cut off from the influence of heat generation, ignition, dust generation, and the like.

Moreover, when synchronizing with the screw shaft which adjoins upstream and downstream both like screw shaft 110B, 110C, 110G, 110H shown in FIG. 7, the drive mechanism 130 is provided in the both sides of the screw shaft 110, and each drive mechanism 130 is provided. Are configured to be able to synchronize with the drive mechanism 130 of the adjacent screw shaft 110.
In this case, one of the drive mechanisms 130 on both sides may omit the motor 131 and have only the rotation transmission means 140.

  The conveyance interval control means 160 is a rotational speed control means 162A, 162B, 162C, 162D, 162G that independently controls the rotational speed of the motor for each screw shaft 110A, 110B, 110C, 110D-F, 110G, 110H, 110J. , 162H, 162J, and single control clutches 148AB, 148BC, 148CD, 148FG, 148GH, 148HJ, and synchronous control means 163AB, 163BC, 163CD, 163FG, 163GH, 163HJ, and these which are independently controlled for connection / release. Consisting of integrated control means 161 that performs overall control, smooth transfer between the screw shafts 110 of the transport body 120, control of the transport speed of the transport body in a plurality of transport sections, transport intervals of transport bodies that connect the respective transport sections, and the like To control.

As shown in FIGS. 8 to 10, the screw shaft 110 has spiral plates 111 </ b> A and 11 </ b> B standing in a spiral manner on the circumferential surface of a cylindrical shaft body 112.
The two spiral plates 111 </ b> A and 111 </ b> B are provided at regular intervals, and the gap functions as a spiral groove 113 in which the engagement roller 123 of the transport body 120 is engaged.

At both ends of the screw shaft 110, end plates 111 </ b> C continuous with the two spiral plates 111 </ b> A and 111 </ b> B are provided so as to close portions other than the ends of the spiral groove 113.
Further, the end plate 111C has a slight spiral shape smaller than the pitch of the two spiral plates 111A and 111B.
The operation of the screw-driven conveying apparatus according to the embodiment of the present invention configured as described above will be described below.
As shown in FIG. 7, screw shafts 110A, 110B, 110C, 110D, 110E, 110F, 110G, 110H, and 110J are arranged in series from the upstream side. The screw shaft 110A has a drive mechanism 130A on the downstream side and a screw shaft. 110B, 110C, 110G, and 110H have drive mechanisms 130B1, 130B2, 130C1, 130C2, 130G1, 130G2, 130H1, and 130H2 on both upstream and downstream sides, and the screw shaft 110J has a drive mechanism 130J on the upstream side, and the screw shaft 110D. , 110E, 110F are directly coupled to each other and rotate together, and a drive mechanism 130D is provided upstream of the screw shaft 110D, and a drive mechanism 130F is provided downstream of the screw shaft 110F.

  Drive mechanisms 130A and 130B1, 130B2 and 130C1, 130C2 and 130D, 130F and 130G1, 130G2 and 130H1, 130H2 and 130J are provided adjacent to each other, and single position clutches 148AB, 148BC, 148CD, 148FG, 148GH, and 148HJ. It is comprised so that rotation may be connected and released.

  The screw shaft 110A, the screw shafts 110D to 110F, and the screw shaft 110J are respectively set to predetermined rotation speeds so as to have a conveyance speed corresponding to processing / work such as processing, conveyance, assembly, and painting with respect to the conveyance object 120 in each conveyance section. The rotation speed control means 162A, 162D and 162J are controlled by the general control means 161.

  First, as shown in FIG. 11A, when the transport body 120 is transported from the upstream (left side of the drawing) by the screw shaft 110A, the engagement roller at the tip of the transport body 120 is commanded by the general control means 161. Before 123A reaches the screw shaft 110B, the rotational speed control means 162B synchronizes the rotational speed of the screw shaft 110B with the screw shaft 110A, and the synchronous control means 163AB connects the single-position clutch 148AB, and at the same rotational speed. Screw shafts 110A and 110B are driven.

  At this time, the screw shafts 110A and 110B are fixed to a predetermined rotational phase by the single position clutch 148AB, and the pair of guide bodies 122A and 122B in the traveling direction of the transport body 120 and the pair in the rear in the traveling direction. Since the distance between the guide bodies 122C and 122D is set wider than the distance between the two adjacent screw shafts 110, the engagement rollers 123C and 123D at the rear end of the conveying body 120 are moved by the spiral groove 130 of the screw shaft 110A. In the running state, the engagement rollers 123A and 123B at the tip smoothly engage with the spiral groove 130 of the screw shaft 110B.

  When the conveyance body 120 further travels and the engagement roller 123D at the rear end leaves the spiral groove 130 of the screw shaft 110A, the single position type clutch 148AB is released by the synchronization control means 163AB in response to a command from the overall control means 161, The traveling of the carrier 120 can be controlled independently by the screw shaft 110B.

  Next, as shown in FIG. 11 (b), the screw shaft 110B is rotated by the rotation speed control means 162B before the engagement roller 123A at the tip of the transport body 120 reaches the screw shaft 110C in response to a command from the overall control means 161. The rotation speed of the screw shaft 110C is synchronized with the screw shaft 110B by the rotation speed control means 162C, the single position clutch 148BC is connected by the synchronization control means 163BC, and the carrier 120 is connected to the screw shaft 110B. To 110C to make a quick and smooth connection.

  Then, as shown in FIG. 11 (c), when the engagement roller 123D at the rear end of the conveying body 120 leaves the spiral groove 130 of the screw shaft 110B, a single command is issued by the synchronization control means 163BC in response to a command from the general control means 161. The position type clutch 148BC is released, and the rotational speed control means 162C controls the rotational speed of the screw shaft 110C to adjust the timing at which the conveying body 120 reaches the screw shaft 110D.

  Then, as shown in FIG. 11 (d), the rotation speed control means 162C rotates the screw shaft 110C in response to a command from the general control means 161 before the engagement roller 123A at the tip of the transport body 120 reaches the screw shaft 110D. In addition to synchronizing the number with the screw shaft 110D, the synchronization control means 163CD connects the single-position clutch 148CD, and the transfer body 120 is connected to the next transfer section at an arbitrary timing, so that the transfer intervals of the plurality of transfer bodies are Is controlled.

  On the other hand, after the engagement roller 123D at the rear end of the conveyance body 120 is disengaged from the spiral groove 130 of the screw shaft 110B and the single-position clutch 148BC is released, the rotational speed control means 162B is instructed by a command from the general control means 161. This reduces the rotational speed of the screw shaft 110B and prepares for the next carrier 120 to approach the screw shaft 110A.

  As described above, the transfer from the screw shaft 110A to the screw shaft B causes the transfer body 120 to transfer smoothly by synchronizing the screw shaft 110B with the screw shaft 110A at which the transfer speed is set. The transfer to the screw shaft 110C is performed in a rapid manner in synchronism while increasing the rotation speed, so that the transported object 120 approaches the screw shaft 110B, and after the connection to the screw shaft 110C is performed, the screw By controlling the rotation speed of the shaft 110C, it is possible to synchronize with the screw shaft 110D at which the conveyance speed is set and to transfer the conveyance body 120 at an arbitrary timing.

  For example, when the conveyance speeds of the conveyance sections of the screw shafts 110A and 110D are set to Va and Vd, the respective conveyance intervals Pa and Pd have a relationship of Pa / Va = Pd / Vd. Even if the conveyance interval Pa varies for some reason and reaches the screw shaft 110B, the conveyance interval Pd when connecting to the screw shaft 110D can always be kept constant.

  The connection to the screw shafts 110F, 110G, 110H, and 110J is performed in the same manner, and the conveyance speed sections having the same configuration may be arranged in series.

  As described above, according to the present invention, the transport body 120 can smoothly transfer the screw shaft 110 and can be transported continuously at a high speed while transporting in a plurality of transport sections while simplifying the configuration of the apparatus. The effect is enormous, for example, the conveyance speed of the body 120 can be controlled independently, and the conveyance interval of the conveyance body 120 connecting each conveyance section can be arbitrarily controlled.

  In the above embodiment, the screw shafts 110 having the same length are appropriately combined depending on the section in which the traveling of the transport body 120 is independently controlled. However, screw shafts having different lengths may be arranged.

  In addition, the rotation speed and rotation phase of the adjacent screw shaft 110 are simultaneously synchronized using a single position clutch 148, but the rotation timing of the screw shaft 110 is detected using a normal clutch to control the connection timing. By doing so, the rotational speed and the rotational phase may be synchronized, or the rotational speed and rotational phase of the screw shaft 110 may be detected and controlled by controlling the motor 131 without using a clutch.

The perspective view of the screw drive conveyance apparatus which is one Example of this invention. The side view of the screw drive conveyance apparatus which is one Example of this invention. The top view of the conveyance body of the screw drive conveyance apparatus which is one Example of this invention. The front view of the conveyance body of the screw drive conveyance apparatus which is one Example of this invention. The side view of the conveyance body of the screw drive conveyance apparatus which is one Example of this invention. The top view of the screw drive conveyance apparatus which is one Example of this invention. BRIEF DESCRIPTION OF THE DRAWINGS Arrangement explanatory drawing of the screw drive conveyance apparatus which is one Example of this invention. The side view of the screw shaft of the screw drive conveyance apparatus which is one Example of this invention. Sectional drawing of the screw shaft of the screw drive conveyance apparatus which is one Example of this invention. The expanded view of the screw shaft of the screw drive conveyance apparatus which is one Example of this invention. Operation | movement explanatory drawing of the screw drive conveyance apparatus which is one Example of this invention. The perspective view of the conventional screw drive conveyance apparatus. Sectional drawing of the conventional screw drive conveyance apparatus. The side view of the conventional screw drive conveyance apparatus. Sectional drawing of the other conventional screw drive conveyance apparatus. Arrangement explanatory drawing of the other conventional screw drive conveyance device. Side surface explanatory drawing of the other conventional screw drive conveyance apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100,500,600 ... Screw drive conveyance apparatus 101,501 ... Base part 102,502,602 ... Guide rail 503 ... Cover body
604 ... Chain conveyor
605 ・ ・ ・ Dog
606... Carriage rail
607 ... Cylinder 110, 510, 610 ... Screw shaft 111, 511, 611 ... Spiral plate 112 ... Shaft body 113 ... Spiral groove 120, 520, 620 ... Conveyance body 121, 521 , 621 ... Wheels 122, 522 ... Guide bodies 123, 523, 623 ... Engagement rollers 124 ... Conveyor frame
624 ... Carriage
625 ... Hook
626 Carriage roller
627 ... Carriage link 130 ... Drive device 131 ... Motor 132 ... Output shaft 140 ... Rotation transmission means 141 ... Gear box 142 ... Drive shaft 143 ... Final gear 144- .... Universal joint 145 ... Universal joint 146 ... Joint 147 ... Clutch shaft 148 ... Single position type clutch
650 ・ ・ ・ Transport route
651 ... Standby position
652 ... Insertion position
653 ... Stop position
654 ... separation position 160 ... transport interval control means 161 ... comprehensive control means 162 ... rotation speed control means 163 ... synchronization control means

Claims (4)

A screw shaft having a spiral feed member on the circumferential surface, a drive device that rotationally drives the screw shaft, and an engaging portion that engages with the spiral feed member are conveyed by the rotation of the screw shaft. A screw drive transport device having a transport body,
A plurality of the screw shafts are arranged in series in the transport direction,
A plurality of the driving devices are provided so that the plurality of screw shafts can be independently driven to rotate, and have a conveyance interval control means for controlling the timing of connecting the screw shafts of the conveyance body. Screw drive conveying device. The drive device is composed of a motor and rotation transmission means for transmitting rotation of the motor to the screw shaft,
The conveyance interval control means includes a rotation speed control means for independently controlling the rotation speed of the motor of each driving device, and a synchronization control means for controlling the synchronization / asynchronization of the rotation of the adjacent rotation transmission means. The screw drive conveyance device according to claim 1 characterized by things.   The screw drive conveyance device according to claim 2, wherein the synchronization control means has a clutch capable of connecting and releasing the rotation of the adjacent rotation transmission means.   The screw-driven conveying device according to claim 3, wherein the clutch is a single-position clutch that can be connected only in one phase per one rotation.

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