JP5068229B2 - Screw-driven conveying cart and screw-driven conveying device - Google Patents

Description

  The present invention includes an engagement portion that engages with a screw shaft that is rotationally driven, and traveling means that travels in the transport direction, and is driven and transported in the transport direction by rotation of the screw shaft. It relates to the device.

  Conventionally, as a transport device that transports a transport carriage by moving it from the outside, a pair of rails, a screw shaft provided in parallel between the pair of rails, a wheel traveling on the rail, and a screw shaft There is known a screw-driven conveying device which is composed of a screw-driven conveying cart provided with an engaging means for engaging with a spiral feeding member, and which is configured so that the screw-driven conveying cart moves on a rail by rotationally driving a screw shaft. It has been.

  As shown in FIGS. 5 to 7, these screw drive conveyance devices 500 include a pair of left and right guide rails 502 laid on the base portion 501, and screws provided in a cover body 503 between the two guide rails 502. It consists of a shaft 510 and a screw-driven transport carriage 520 that has wheels 521 and is supported and guided by both guide rails 502 and can run freely.

  The screw drive conveyance cart 520 is provided with an engaging means 523 guided by the guide body 522 so as to be movable up and down. The screw shaft 510 is provided with a spiral plate 511 spirally on a cylindrical surface. When the engagement means 523 is engaged with the spiral plate 511 of the screw shaft 510 from above, the screw shaft 510 is rotationally driven by a driving device (not shown), so that the screw drive conveyance carriage 520 is supported and guided by the guide rail 502. And run.

Further, as shown in FIG. 7, the screw drive conveyance device 500 forms the pitches P <b> 1 and P <b> 2 of the spiral plate 511 of the screw shaft 510 so as to differ depending on the part, so that the rotation speed of the screw shaft 510 is not changed. The screw drive conveyance cart 520 is configured to change the traveling speed, and the engagement means 523 of the screw drive conveyance cart 520 can be moved up and down to engage and disengage the spiral plate 511 and the engagement roller 523. By doing so, it is comprised so that driving | running | working and a stop of the screw drive conveyance trolley 520 can be selected (for example, refer patent document 1).
JP-A-9-58463 (pages 3 to 4, FIG. 1, FIG. 3, FIG. 6)

However, since the conventional screw drive conveyance cart 520 has only one engaging means 523, the screw shaft 510 that is continuous in the entire conveyance section is necessary, and installation and adjustment of the entire screw drive conveyance device 500 are required. There was a problem that the work became large-scale.
Also, the travel speed of the screw shaft 510 can be changed by changing the travel speed depending on the position by providing sections with different pitches on the screw shaft 510, or by changing the travel speed by controlling the rotational speed of the screw shaft 510. Although it is possible to control, when a plurality of screw-driven transport carts 520 travel simultaneously, there is a problem that the travel of each screw-driven transport cart 520 cannot be controlled independently.

  The present invention solves the problems of the prior art as described above, that is, the object of the present invention is to enable smooth connection by appropriately combining a plurality of short screw shafts, It is an object of the present invention to provide a screw-driven conveyance carriage and a screw-driven conveyance apparatus that facilitate the adjustment work and that can independently control the traveling of a plurality of screw-driven conveyance carriages.

  The invention according to claim 1 includes an engaging means that engages with a screw shaft that is rotationally driven, and a traveling means that travels in the conveying direction, and is driven and conveyed in the conveying direction by the rotation of the screw shaft. In the drive conveyance carriage, the engagement means is provided at three positions in the conveyance direction, and the engagement means at two positions of the engagement means are provided in series in the conveyance direction. Is provided at an intermediate position in the transport direction of the two engagement means and at a position away from a straight line connecting the two engagement means. It solves the problem.

  According to the second aspect of the present invention, in addition to the configuration of the screw drive conveyance carriage described in the first aspect, the other one of the engaging means is the two engaging means. The above-mentioned problem is further solved by being provided at an equidistant position from the above.

  In the invention according to claim 3, in addition to the configuration of the screw drive transport carriage described in claim 1 or 2, the engagement means is provided on the lower surface of the screw drive transport carriage, and in the width direction. The problem is further solved by being arranged at equal intervals from the center line.

  In the invention according to claim 4, in addition to the configuration of the screw drive transport carriage according to any one of claims 1 to 3, the travel means is a wheel that rolls on a travel rail. The above-mentioned problem is further solved.

  The invention according to claim 5 is a screw-driven transport comprising a plurality of screw shafts that are rotationally driven, a screw-driven transport carriage having an engaging means that engages with the screw shafts and a traveling means that travels in the transport direction. In the apparatus, the engagement means is provided at three places in the transport direction, and two of the engagement means are provided in series in the transport direction, and the other one of the engagement means is provided. The engagement means at the location is provided at an intermediate position in the conveying direction of the engagement means at the two locations and at a position away from a straight line connecting the engagement means at the two locations, and the plurality of screw shafts are The problem is solved by being alternately arranged in two rows and arranged so as to be sequentially engaged with only one of the engaging means.

  The invention according to claim 6 further solves the above-described problem by the plurality of screw shafts including screw shafts having different pitches in addition to the configuration of the screw drive conveyance device according to claim 5. It is.

  The invention according to claim 7 includes, in addition to the configuration of the screw drive conveyance device according to claim 5 or claim 6, the plurality of screw shafts including screw shafts that rotate at different rotational speeds. The problem is further solved.

  The screw-driven transport carriage of the present invention has an engaging means that engages with a screw shaft that is rotationally driven and a traveling means that travels in the transport direction, and is driven and transported in the transport direction by the rotation of the screw shaft. It is possible to control the drive of the screw-driven transport carriage using an external drive source, and to achieve the following special effects.

  That is, in the screw-driven transport carriage according to the first aspect of the present invention, the engagement means is provided in three places in the transport direction, and two of the engagement means are provided in series in the transport direction. The other one of the engaging means is located at an intermediate position in the transport direction of the two engaging means and at a position away from a straight line connecting the two engaging means. By being provided, it is possible to smoothly transport in the transport direction while connecting between a plurality of screw shafts arranged in two rows, so it is possible to use a combination of a plurality of short screw shafts as appropriate, and the entire screw drive transport device The installation and adjustment work can be facilitated, and the traveling and driving of the plurality of screw drive carriages can be independently controlled by independently changing and controlling the pitch and speed of the plurality of screw shafts. .

  In addition to the effect produced by the screw drive conveyance carriage according to the first aspect, the screw drive conveyance carriage of the invention according to the second aspect is characterized in that the other one engagement means among the engagement means is the 2 By being provided at a position equidistant from the engaging means in the place, the distances in the conveying direction of the ends of the adjacent screw shafts can all be made equal, and installation and adjustment work of the entire screw drive conveying device can be performed. It becomes easier.

  Moreover, in addition to the effect which the screw drive conveyance trolley | bogie which concerns on the screw drive conveyance trolley | bogie of Claim 1 or Claim 2 shows, the engagement means is provided in the lower surface of a screw drive trolley | bogie. In addition, by being arranged at equal intervals from the center line in the width direction, two rows of screw shafts can be compactly installed at the lower part of the conveying path of the screw-driven conveying carriage, and the entire screw-driven conveying apparatus is installed. And adjustment work becomes easier.

  Furthermore, in addition to the effect which the screw drive conveyance trolley | bogie which concerns on any one of the Claim 1 thru | or 3 shows | plays, the traveling means rolls on the traveling rail. By being a wheel, the traveling between the screw shafts arranged in two rows becomes smoother because the traveling on the conveying path of the screw-driven conveying cart becomes a smooth and accurate path.

  The screw drive transport device of the present invention comprises a screw drive transport carriage having a plurality of screw shafts that are rotationally driven, engagement means that engages with the screw shafts, and travel means that travels in the transport direction. As a result, it is possible to control the drive of the screw-driven transport carriage using an external drive source, and to obtain the following special effects.

  That is, in the screw drive conveyance device according to the fifth aspect of the present invention, the engagement means is provided at three places in the conveyance direction, and two of the engagement means are provided in series in the conveyance direction. The other one of the engaging means is provided at an intermediate position in the transport direction of the two engaging means and at a position away from the straight line connecting the two engaging means, The screw shafts are alternately arranged in two rows, and are arranged so as to be sequentially engaged only with any one of the engaging means. It is possible to smoothly transport in the transport direction while connecting between the screw shafts, so that a plurality of short screw shafts can be used in combination as appropriate. The pitch of the screw shaft Degrees it is possible to perform independently controls the running of a plurality of screw drive conveyance carriage by independently changing-control.

  And the screw drive conveyance apparatus of the invention which concerns on this 6th aspect WHEREIN: In addition to the effect which the screw drive conveyance apparatus which concerns on Claim 5, there exist several screw shafts, since several screw shafts include the screw shafts of different pitch, Since it is possible to change the conveyance speed for each section while connecting the screw shaft and driving at the same rotation speed, it becomes possible to independently control the traveling of the plurality of screw-driven conveyance carriages for each conveyance section. .

  Moreover, the screw drive conveyance apparatus of the invention which concerns on this 7th aspect WHEREIN: In addition to the effect which the screw drive conveyance apparatus which concerns on Claim 5, there exists a screw shaft in which several screw shafts rotate with a different rotational speed. Because it is possible to independently control the travel of the screw-driven transport carriage only in the sections of the screw shafts having different rotational speeds, the travel of the plurality of screw-driven transport carts is controlled independently for each screw shaft. Is possible.

  The screw-driven transport cart of the present invention has an engaging means that engages with a rotationally driven screw shaft and a travel means that travels in the transport direction, and is driven and transported in the transport direction by rotation of the screw shaft. In the carriage, the engagement means are provided at three positions in the transport direction, and two of the engagement means are provided in series in the transport direction, and the other one of the engagement means is the engagement means. Is provided at an intermediate position in the transport direction of the two engaging means and at a position away from a straight line connecting the two engaging means, and a plurality of short screw shafts can be used in combination as appropriate. The installation and adjustment work of the entire drive conveyance device is facilitated, and the travel of multiple screw drive conveyance carriages can be independently controlled by independently changing and controlling the pitch and speed of multiple screw shafts. As long as Ukoto exhibits an effect that it is possible, specific embodiments thereof are may any be any one.

  The screw drive conveyance device of the present invention is a screw comprising a screw drive conveyance carriage having a plurality of rotationally driven screw shafts, an engagement means that engages with the screw shafts, and a travel means that travels in the conveyance direction. In the driving and conveying apparatus, three engaging means are provided in the conveying direction, and two engaging means among the engaging means are provided in series in the conveying direction, and the other engaging means is engaged in the other one of the engaging means. The joining means is provided at an intermediate position in the transport direction of the two engaging means and at a position away from the straight line connecting the two engaging means, and the plurality of screw shafts are alternately arranged in two rows. It is arranged so that it can be engaged with only one of the engaging means in order, and can be used by combining a plurality of short screw shafts as appropriate, and the installation of the entire screw-driven conveying device Tones This makes it easy to control the pitch and speed of multiple screw shafts independently, enabling independent control of the travel of multiple screw-driven transport carts. Any specific embodiment may be used as long as it does.

  In other words, the engagement means of the screw-driven transport carriage of the present invention is such that two of the engagement means are provided in series in the transport direction, and the other one of the engagement means is engaged. As long as the means is provided at an intermediate position in the conveying direction of the two engaging means and at a position away from the straight line connecting the two engaging means, the means may be arranged at any position. Further, it may be arranged on the side surface of the screw-driven conveyance carriage or on the upper surface. In order to reduce the overall size of the screw drive conveyance device, it is preferable to arrange the screw drive conveyance device on the lower surface of the screw drive conveyance carriage.

  Further, the distance between the three engagement means of the screw drive conveyance carriage of the present invention is such that two of the engagement means are provided in series in the conveyance direction, Any distance may be used as long as one engaging means is located at an intermediate position in the transport direction of the two engaging means. In order to facilitate the installation and adjustment of the entire screw-driven conveying device, it is preferable that all the distances in the conveying direction of the ends of the adjacent screw shafts be equal to each other.

  Furthermore, the traveling means of the screw-driven transport carriage of the present invention may be any means, may be slid, or may be rolled by wheels. A wheel that rolls on the traveling rail is preferable in order to make the traveling on the conveyance route a smooth and accurate route.

Below, the screw drive conveyance trolley | bogie and screw drive conveyance apparatus which are the Examples of this invention are demonstrated based on drawing.
FIG. 1 is a plan view of a screw-driven transport cart according to an embodiment of the present invention, FIG. 2 is a side view of the screw-driven transport cart according to an embodiment of the present invention, and FIG. FIG. 4 is a front view of a screw-driven transport cart that is an embodiment of the present invention, and FIG. 4 is an explanatory diagram of a transport operation of a screw-driven transport device that is an embodiment of the present invention.

  As shown in FIGS. 1 to 3, the screw-driven transport cart 120 according to an embodiment of the present invention includes a transport cart frame 124 having wheels 121 supported and guided by the guide rail 102. In the lower part, a roller-shaped engaging means 123 is rotatably supported by the guide body 122 and is provided so as to engage with the screw shaft 110. Other configurations such as holding the object to be conveyed are omitted.

The screw drive conveyance cart 120 is provided with three engagement means 123A, engagement means 123B, and engagement means 123C in order from the front in the traveling direction T (right direction in FIGS. 1 and 2).
The engaging means 123A and the engaging means 123C are provided at a position separated by a distance wa from the center line Cw in the width direction of the screw drive carriage 120, and the engaging means 123B is provided on the opposite side in the width direction from the center line Cw. It is provided at a position separated by a distance wb.

The engaging means 123C is provided on the center line Ct in the traveling direction of the screw-driven transport carriage 120, the engaging means 123A is located at a position away from the center line Ct by a distance da, and the engaging means 123C is at the center. It is provided at a position separated from the line Ct by a distance dc rearward.
In this embodiment, wa = wb and da = dc are set, but they may be set arbitrarily.

  The screw shaft 110 is divided into a plurality of portions in the conveying direction alternately at positions where the engaging means 123A and the engaging means 123C of the screw-driven conveying carriage 120 are engaged from above and the engaging means 123B from above. It is comprised by being arranged in.

The operation of the screw drive transport carriage 120 according to the embodiment of the present invention configured as described above will be described with three screw shafts 110 as shown in FIG.
Assuming that the screw shafts 110A, 110B, and 110C are from the upstream, the screw shafts 110A and 110C are at positions where the engagement means 123A and the engagement means 123C of the screw drive conveyance carriage 120 are engaged from above, and the screw shaft 110B is the screw drive conveyance carriage. 120, the screw shafts 110A, 110B, and 110C are configured to rotate in synchronization with each other.

First, as shown in FIG. 4A, the engaging means 123A engages with the screw shaft 110A, and drives the screw drive transport carriage 120 in the transport direction.
When the screw drive conveyance carriage 120 advances as it is, as shown in FIG. 4B, the engagement means 123C is engaged with the screw shaft 110A and the drive is continued, and further the screw drive conveyance carriage 120 advances and the engagement means. Even if 123A detaches from the screw shaft 110A, the screw drive carriage 120 is continuously driven by the engaging means 123C engaging with the screw shaft 110A.

  Next, when the engaging means 123B reaches the screw shaft 110B, as shown in FIG. 4C, the engaging means 123A disengages the screw shaft 110A and the engaging means 123B engages with the screw shaft 110B. Then, the screw drive carriage 120 continues to be driven.

  When the engaging means 123A reaches the screw shaft 110C, as shown in FIG. 4D, the engaging means 123B disengages the screw shaft 110B, and the engaging means 123A engages with the screw shaft 110C. Transfer and the screw drive carriage 120 continue to drive and return to the state shown in FIG.

In other words, the screw-driven transport carriage 120 is transported by engaging only one of the engaging means 123 with any one of the screw shafts 110 except for the moment when the engaging means 123 transfers the front and rear screw shafts 110. .
This is repeated, and the screw drive conveyance carriage 120 is continuously driven by the engagement means 123 sequentially changing a large number of alternately arranged screw shafts 110.

  The lengths La and Lc of the screw shafts 110A and 110C engaged with the engagement means 123A and the engagement means 123C may be any length as long as the distance da + dc is greater than the distance between the engagement means 123A and the engagement means 123C. The length Lb of the screw shaft 110B engaged with the means 123B may be any length.

  The distance Sa in the conveying direction between the ends of the screw shaft 110A and the screw shaft 110B is substantially equal to the distance da in the conveying direction between the engaging means 123A and the engaging means 123B, and the conveying direction between the ends of the screw shaft 110B and the screw shaft 110C. The interval Sb is set substantially equal to the interval dc in the transport direction between the engagement means 123B and the engagement means 123C.

In addition, a part of the screw shafts 110 among the plurality of screw shafts 110 is made to have different pitches, and the speed of the screw-driven transport cart 120 is made different depending on the section, so that the plurality of screw-driven transport carts 120 travel. In addition, the conveyance speed can be controlled independently for each section.
At this time, the pitch of the ends of the adjacent screw shafts 110 is made the same, and the pitch is continuously changed from the end to the center so that the speed of the screw drive carriage 120 can be engaged without abrupt change. Transfer of the means 123 can be performed smoothly.

  Furthermore, in the example of the operation described above, the screw shaft 110 is rotated synchronously. However, a part or all of the screw shafts 110 are independently driven to rotate and are synchronized with the adjacent screw shaft 110 only when the engaging means 123 is connected. By rotating, it is possible to run a plurality of screw-driven transport carts 120 and control the transport speed by independently controlling the rotation of each screw shaft 110.

  As described above, according to the screw-driven transport carriage of the present invention, the installation and adjustment of the entire screw-driven transport apparatus can be facilitated by enabling a smooth connection by appropriately combining a plurality of short screw shafts. The effect is enormous, for example, it becomes possible to independently control the traveling of the plurality of screw-driven conveying carts.

The top view of the screw drive conveyance trolley which is one example of the present invention. The side view of the screw drive conveyance trolley which is one example of the present invention. The front view of the screw drive conveyance trolley which is one example of the present invention. Explanatory drawing of the conveyance operation of the screw drive conveyance trolley 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.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100, 500 ... Screw drive conveyance apparatus 101,501 ... Base part 102, 502 ... Guide rail 503 ... Cover body 110, 510 ... Screw shaft 111,511 ... Spiral plate 120, 520 ... Screw drive conveyance carriage 121, 521 ... Wheels 122, 522 ... Guide bodies 123, 523 ... Engagement means 124 ... Conveyance carriage frame

Claims (7)

In a screw drive transport carriage that has an engagement means that engages with a screw shaft that is rotationally driven and a travel means that travels in the transport direction, and is driven and transported in the transport direction by the rotation of the screw shaft.
The engagement means is provided in three places in the transport direction,
Two engagement means of the engagement means are provided in series in the transport direction,
The other one of the engaging means is located at an intermediate position in the transport direction of the two engaging means and away from a straight line connecting the two engaging means. A screw-driven transport cart characterized by being provided.   2. The screw-driven transport carriage according to claim 1, wherein the other one of the engaging means is provided at a position equidistant from the two engaging means.   3. The screw-driven transport carriage according to claim 1, wherein the engagement means is provided on a lower surface of the screw-driven transport carriage and is arranged at equal intervals from the center line in the width direction. .   4. The screw-driven transport cart according to claim 1, wherein the travel means is a wheel that rolls on a travel rail. In a screw drive transport device comprising a plurality of screw shafts that are rotationally driven, and a screw drive transport carriage that has engagement means that engages with the screw shafts and travel means that travels in the transport direction.
The engagement means is provided in three places in the transport direction,
Two engagement means of the engagement means are provided in series in the transport direction,
The other one of the engaging means is located at an intermediate position in the transport direction of the two engaging means and away from a straight line connecting the two engaging means. Provided,
The plurality of screw shafts are alternately arranged in two rows, and are arranged so as to be sequentially engaged only with any one of the engagement means. Screw drive conveying device.   The screw drive conveyance device according to claim 5, wherein the plurality of screw shafts include screw shafts having different pitches.   The screw drive conveyance device according to claim 5 or 6, wherein the plurality of screw shafts include screw shafts that rotate at different rotational speeds.

Images