JP2008019094A5 - - Google Patents

Description

Transport device

The present invention relates to a transport device ( belt conveyor device ) .

  In general, it is a well-known technique that is carried out in an ordinary manner to convey an object to be conveyed by a belt conveyor and to perform various processes on the object to be conveyed during this conveyance process. When a printing process is performed on a predetermined position of the conveyed object during conveyance, it is necessary to prevent the printing position of the conveyed object from being shifted. For this purpose, it is necessary not only to maintain the conveyance speed accurately, but also to stably hold the conveyed object so as not to cause a positional shift on the belt. A belt conveyor using a timing belt with suction holes as shown in FIG. 23 is widely used.

  Referring to this figure, (a) in this figure is a sectional view of the belt conveyor taken along a plane perpendicular to the conveying direction, and (b) is a partially cutaway sectional view of the belt conveyor. In the figure, the timing belt 1 is composed of a tooth portion 3 and a back plate portion 2 in which suction holes 4 are formed, and a coating sheet S that is an object to be conveyed is placed on the back plate portion. Yes. The suction duct 5 vacuum-sucks an object to be conveyed (coating sheet) through the suction slit 6 and the suction hole 4 of the timing belt, and the timing belt 1 is sandwiched between the left and right side rail plates 8 for preventing vacuum leakage. While being transported, the object to be transported that has been vacuum-sucked is placed on the opening surface 7 of the suction slit 6 and slides.

Japanese Utility Model Publication No. 04-072918

  In the prior art described above, the timing belt is configured to slide on the opening surface 7 of the suction slit 6 of the suction duct, but in this case, by the force for vacuum suction of the object to be conveyed, The timing belt itself is also strongly pressed against the opening surface 7 of the suction slit 6. For this reason, during running of the timing belt, strong friction is generated between the teeth of the timing belt and the opening surface 7 of the suction slit 6 with which the timing belt contacts, and a great amount of driving force is required to run the timing belt. It was.

Further, when the timing belt is run, the friction of the timing belt that is in sliding contact with the opening surface 7 of the suction slit 6 due to the above-mentioned friction is severely worn, so that the thickness of the timing belt can be easily reduced. In some cases, the speed at which it is performed decreases, or in the worst case, conveyance becomes impossible.
Furthermore, the conventional vacuum suction type belt conveyor always performs vacuum suction in all areas on the transport belt regardless of the presence or absence of the object to be transported during the transport operation.

Therefore, when there are few objects to be transported and there are many areas where the objects to be transported are not placed on the transport belt, a very large suction power is required to vacuum-suck the objects to be transported, and the energy use efficiency is high. Very bad.
In view of these points, the present invention provides a driving power and vacuum suction for driving a belt member ( conveying belt ) in a conveying device ( belt conveyor device) of a type that conveys an object to be conveyed by vacuum suction. Is provided, and a conveying device ( belt conveyor device) in which the wear of the conveying belt is extremely small is provided.

In order to achieve the above object, the present invention provides a transport device for transporting a transported object, a belt member for transporting the transported object, a drive mechanism for driving the belt member, and a belt by the drive mechanism. Both side members disposed on both sides of the belt member so as to support the object to be conveyed when the member is driven and so that the upper surface of the belt member is lower than the upper surface by a predetermined minute height when the drive mechanism is not driven; A belt support member that is fixed to the both side members and supports the belt member from below, and a space formed between the lower surface of the conveyed object supported by the both side members and the upper surface of the belt member is vacuum-sucked to remove the belt member. And a vacuum suction mechanism that allows the object to be conveyed by the belt member by raising the object to be adsorbed.
In the present invention configured as described above, when the drive mechanism is not driven and is not vacuumed by the vacuum suction mechanism, the upper surface of the belt member is lower than the upper surfaces of both side members by a predetermined minute height. Next, when the driving mechanism is driven and vacuum suction is performed by the vacuum suction mechanism, the space formed between the lower surface of the conveyed object supported by the both side members and the upper surface of the belt member is vacuum-sucked. As a result, the belt member ascends to attract the object to be conveyed, and the object to be conveyed is conveyed by the belt member. As a result, according to the present invention, the wear of the belt member can be extremely reduced, and the driving force of the driving mechanism can be reduced.

In the present invention, the belt member preferably includes a plurality of suction holes penetrating from the upper surface to the lower surface, and the vacuum suction mechanism performs vacuum suction through the suction holes of these belt members.
In the present invention, preferably, a plurality of teeth extending in the width direction are formed on the lower surface of the belt member, and the vacuum suction mechanism vacuum-sucks the space via an interdental space formed by these teeth.
In the present invention, the belt support member preferably includes a vent hole that is open to the atmosphere.
In the present invention, preferably, the vacuum suction mechanism has a plurality of suction holes opened on the inner side surfaces of both side members facing the interdental space, and a vacuum chamber communicating with these suction holes.
In the present invention, preferably, the vacuum chamber of the vacuum suction mechanism is provided inside the side members.
In the present invention, the drive mechanism preferably includes a toothed pulley that engages with a tooth portion of the belt member.

In the present invention, preferably, a plurality of teeth extending in the width direction are formed on the upper surface of the belt member, and the vacuum suction mechanism vacuum-sucks the space via an interdental space formed by these teeth. .

According to the transport device of the present invention, it is possible to greatly reduce the driving power for running the belt member ( transport belt ) and the suction power for vacuum suction.
Furthermore, according to the conveying apparatus of the present invention, the belt member ( conveying belt ) is very little worn, and the conveying speed is accurately maintained.

The top view which looked at one Example of the conveying apparatus ( belt conveyor apparatus) by this invention from the top is shown in FIG. In this figure, 86 is a timing belt, 84 is a suction hole formed in the timing belt, 83 is a drive wheel provided on the front end side of the belt conveyor, and 85 is provided on the rear end side of the belt conveyor. The driven wheels 81 and 87 are guide top plates provided on both sides of the timing belt.

Reference numeral 23 denotes suction holes formed in the bottom portions of the top plates 81 and 87. As shown in the figure, each suction hole has a shape that opens in a fan shape from the center in the width direction to the inside. . a1 is a suction pipe attached to the base (described later) of each guide, and the interdental space (described later) of the timing belt is vacuum-sucked by the pipe through the suction hole.

  A cross-sectional view of the timing belt 86 taken along the XY plane of this figure is shown in FIG. The timing belt of this embodiment has a structure in which two timing belts 89 and 90 are stacked and bonded as shown in the figure, and a suction hole 84 is formed in the back plate portion of the upper timing belt 89.

Next, the structure of the guides on both sides of the timing belt will be described. FIG. 3 shows a perspective view of the guide as viewed obliquely from above. The guide includes left and right bases 21 and 22 each having a vacuum chamber therein, a support plate 20 spanned between them, and spacers 18 and 19 interposed between the support plate 20 and the top plates 81 and 87. It has.
In addition, 83 shown with the virtual line (two-dot chain line) of this figure is a driving wheel, 86 is a timing belt, and this timing belt runs above the support plate 20.

  The suction pipe attached to the base of each of the guides is connected to a vacuum chamber in the base, and the vacuum chamber is connected to the suction hole 84 by a hole formed in a vertical direction. For reference, FIG. 4 shows a perspective view of one guide disassembled in the vertical direction and viewed obliquely from below. Further, FIG. 5 shows a perspective view of the base 21 in this figure when viewed obliquely from above.

  Next, in FIG. 1, a cross-sectional view when the belt conveyor is cut along the V-W plane is shown in FIG. 6 (note that the driven wheel 85 is not shown in this figure). In FIG. 6, reference numerals 28 and 29 denote vacuum chambers formed in each base. In this belt conveyor, when the reference size is L (for example, 30 centimeters), the size in the conveyance direction of the object to be conveyed is an integral multiple of the size, that is, L, 2L, 3L,. It is designed to handle the transported objects. The vacuum chamber is composed of a plurality of vacuum chambers whose length in the transport direction is divided by the length L, and one suction pipe is attached to each partitioned vacuum chamber. .

  The suction conveyance operation in the present embodiment is performed as follows. In FIG. 3, the height SG1 of the spacers 18 and 19 is set slightly higher (about 0.5 mm) than the height H1 of the lower timing belt 90 in FIG. Therefore, when the suction by the suction pipe described above is started, the gap 11 between the teeth adjacent to the upper timing belt 89 through the suction holes 23 formed in the top plates 81 and 87 (in this application, Air (defined as an interdental gap) is sucked, and the object to be conveyed is sucked through the suction hole 84 of the timing belt.

  In the belt conveyor of this embodiment, an object to be conveyed that is larger than the width of the timing belt 86 is the object to be conveyed. In a state where no suction is performed, the height of the upper side surface of the back plate portion of the timing belt is slightly (approximately 0. 0 mm) than the height of the upper side surfaces of the top plates 81 and 87, as shown in FIG. It is set low (about 5 mm). Therefore, in this state, even if the timing belt is run, the object to be conveyed between the top plates 81 and 87 is not conveyed.

Then, when the suction of the interdental space is started, air in the gap portion between the upper side surface of the back plate portion of the timing belt 89 and the bottom surface of the object to be conveyed is sucked through the suction hole 84, The timing belt 89 rises and comes into close contact with the object to be conveyed, thereby enabling the object to be conveyed. In order to smoothly raise the timing belt, vent holes 48 are provided at several locations on the support plate 20 (see the vent holes 48 in FIG. 3).

  As described above, in this embodiment, when the object to be conveyed is sucked and conveyed, the timing belt is lifted from the support plate and travels, so that the frictional force applied to the timing belt during traveling is extremely small. Therefore, the power supplied to the drive wheels when transporting the object to be transported can be greatly reduced as compared with the prior art. In addition, the wear of the timing belt is extremely reduced.

  Next, the air suction operation of the interdental space by the suction hole 23 will be described with reference to FIG. (A) in this figure represents the top plate 81 at the same scale as the timing belt in FIG. (B). As is clear from these figures, the top plate 81 in the conveying direction of the suction holes 23 of the top plate is shown. The length is set to a size that can simultaneously cover the two interdental spaces of the timing belt. Further, as shown in FIG. 1, the suction holes formed in the top plates 81 and 87 are displaced from each other by a half cycle, so that the inter-gap clearance of the timing belt is also maintained during the timing belt travel. , Always sucked by the suction hole of at least one top plate. That is, the suction operation is always performed continuously.

  In addition, as shown in the perspective view of FIG. 7, as the bases 21 and 22 having the vacuum chamber as described above, groove-shaped portions 30, 31, 32,. You may use the made base. In this figure, a1, b1,... Are suction pipes attached to each L section. For reference, FIG. 8 shows a cross-sectional view of a guide using such a base taken along a plane corresponding to the VW plane in FIG.

  Also for the timing belt, a timing belt having the structure shown in FIG. 9 may be adopted instead of the one shown in FIG. This timing belt has a structure in which a back plate portion 13 having a suction hole 84 is bonded to one side of a belt provided with teeth on both sides. Then, by setting the dimensions H3 and H4 in this figure to be equal to H1 and H2 in FIG. 2B, the intended vacuum suction operation can be performed.

Next, the suction control system of the present embodiment configured to greatly reduce the energy consumption for suction will be described.
First, a description will be given of the case of a belt conveyor set so as to be able to handle transported objects of four sizes L, 2L, 3L, and 4L.
The overall configuration of the suction control system in this case is shown in FIG. In this figure, 21 is a base of one guide of the belt conveyor, and one suction pipe a1, b1, c1,... Is attached to each L section (note that the base of the other guide is Similarly, suction pipes a1, b1, c1,... Are attached, but the configuration at this point is omitted).

In this figure, the suction pipe attached to each L section of the base 21 is represented by the same lowercase alphabet in the 4L section period, and each L section of the base 21 is represented by the suction pipe attached to each. Expressed using uppercase letters.
On the other hand, 50 is a vacuum pump, 53, 54 and 555 are on-off valves, R1 to R3 are rotary suction path switching devices (hereinafter abbreviated as “switching devices”). Suction is performed through a valve and a suction path arranged as shown.

Reference numeral 51 denotes a setting device, which sets an on-off valve and a switching device according to which size of the L to 4L object to be conveyed is set, and operates the intended transfer mode. Realize.
First, a description will be given of a suction mode when an L-size object is conveyed. In this mode, all the on-off valves are closed by the setting device 51, and suction is performed only through the switching device R1.

  The structure of the switching device R1 will be described with reference to FIG. (A) of this figure is a front view of the switching device, and (b) is a right side view. A sectional view cut along the QS plane in the right side view is shown in (C), and a sectional view cut along the TR plane in the front view is shown in (D). A disk 76 shown in a perspective view (e) is rotatably mounted in the body box 60 of the switching device. This disk has an opening 78 on only one side surface, and an opening 74 that opens in a fan shape at an angle of 90 degrees from the opening toward the cylindrical surface on the periphery of the disk.

  In addition, 75 of this disk is a meat stealing part provided in order to maintain the balance at the time of rotation. In the sectional view (D), 71 is a motor, 72 is a rotation speed reduction mechanism, and 79 is a rotation shaft of the disk 76. Here, the suction pipe 52 from the vacuum pump 52 in FIG. 10 is connected to the suction pipe 59 of the switching device in FIG. 11, and the suction pipes a01, b01, c01, d01 in FIG. Connected to suction pipes 55, 56, 57, 58 of the switching device.

  In the sectional view (c), the rotational speed of the disk 76 is set so that the disk 76 rotates once in the clockwise direction while the conveyor belt of the belt conveyor travels in the 4L section. As a result, the suction pipe 52 of the vacuum pump passes through the suction pipes a01, b01, c01, d01 in order for each L section through the opening 78 and the opening 74 of the disk 76, as is clear from the sectional view (c). Execute suction operation.

  As shown in FIG. 10, the suction pipe a01 is connected to the suction pipes a1, a2, a3,... For each 4L section through the suction pipe a0, and the suction pipes b01, c01, and d01 are also connected. Similarly, each is connected to a suction pipe for each 4L section. At the start of conveyance of the object to be conveyed, the opening 74 of the disk 76 is set by the setting device 51 so as to have the angular positional relationship shown in FIG. 12A with respect to the suction pipes a01, b01, c01, d01. Is done.

  When the setting is made as described above and the rotation of the disk 76 is started simultaneously with the start of the conveyance, the suction forces of the suction pipes a01, b01, c01, and d01 are as shown in FIG. To change. In FIG. 12D, the horizontal axis GL represents the conveyance distance of the object to be conveyed, and the vertical axis PW represents the suction force of each suction pipe. As is apparent from this figure, the suction force is always maximized only in the suction pipe attached to the section where the object to be transported exists on the transport belt, and the suction force of the other suction pipe is almost zero. The suction pipe is switched and selected by the switching device.

  And in the regular conveyance operation state in the mode which conveys the L size conveyance object, one conveyance object exists in a 4L section on a belt conveyor, and 3L is provided between adjacent conveyance objects. A blank area is generated in the section, but as described above, the suction force of all the suction pipes in each 4L section is controlled to be maximum, and the suction pipe in the section where there is no other object to be transported is suctioned. Therefore, the efficiency of using the suction power of the vacuum pump 50 is extremely high, and the energy saving effect is very large compared to the conventional belt conveyor.

  Next, a description will be given of a suction mode when a 2L size object is transported. In this case, the setting device 51 opens the on-off valve 555, closes the on-off valves 53 and 54, and performs suction through the switching devices R1 and R2. At the start of conveyance of the object to be conveyed, the angular position of the fan-shaped opening of the disk in the switching device R1 is such that the angular position relationship shown in FIG. The angular position of the fan-shaped opening is set by the setting device 51 so as to be the angular position shown in (b) of FIG. 12 with respect to the suction pipes a02, b02, c02, and d02.

  When the setting is made as described above and the discs in these switching devices are rotated simultaneously with the start of the transport operation, the suction force of the suction pipes a02, b02, c02, d02 of the switching device R2 changes. This is represented by (e) in FIG. 12, in which the waveform of (d) in FIG. Here, in FIG. 10, since the suction pipes a02, b02, c02, d02 are also connected to the suction pipes a0, b0, c0, d0, the suction forces of the suction pipes a0, b0, c0, d0 are as follows. 12 (a) to (d) in FIG. 13 obtained by synthesizing (d) and (e) in FIG.

As can be seen from these figures, since only the approximately 2L section where the object to be transported exists on the transport belt is sucked by the suction pipe and no suction operation is performed in the section where the object to be transported does not exist, high suction efficiency is achieved. can get.
Further, in the suction mode when transporting a 3L size transported object, the on-off valve 54 in FIG. 10 is also set to an open state, and the three switching devices R1 to R3 can be operated to transport the transported object. The angular position of the fan-shaped opening of the disk in the switching device R3 at the start is set as shown in FIG.

The manner in which the suction forces of the suction pipes a03, b03, c03, and d03 change in this case is represented by a diagram in which the waveform of (e) in FIG.
In FIG. 10, since the suction pipes a03, b03, c03, d03 are also connected to the suction pipes a0, b0, c0, d0, respectively, the suction forces of the suction pipes a0, b0, c0, d0 are This is indicated by (e) to (h) in FIG. 13 obtained by combining the suction forces a03, b03, c03, and d03 and the suction forces indicated by (d) and (e) in FIG.

As shown in this figure, only the approximately 3L section where the conveyed object exists is sucked and the L section where the conveyed object does not exist is not sucked, so that the suction power is saved.
Finally, a description will be given of a suction mode when a 4L size object is conveyed. In this case, all the on-off valves in FIG. 10 are set to the open state, all the switching devices are kept in the rotation stopped state, and the angular position of the fan-shaped opening of the disk in each switching device is switched. Only the suction pipe a01 is sucked in the device R1, only the suction pipe b02 is sucked in the switching device R2, and only the suction pipe c03 is sucked in the switching device R3. By operating the vacuum pump 50 in such a manner, the suction pipes a0, b0, c0, d0 all perform a suction operation, and suction is performed in all sections of the guide.

  The suction control system used in the belt conveyor set so as to handle the conveyed object having a size of 1L to 4L has been described above, but based on the same idea, the conveyed object having an external size, for example, 1L to 6L. A suction control system can be constructed for use on a belt conveyor that is set to handle. Specifically, it may be configured as follows.

  That is, the suction pipes a0, b0, c0, d0, e0, and f0 are configured by connecting all the suction pipes of the 6L section to one suction pipe among the suction pipes attached to the guide of the belt conveyor. On the other hand, five switching devices are provided. In each switching device, six suction pipes are arranged at equal angles around the disk, and the opening angle of the fan-shaped opening formed in the disk of the switching device is 60 degrees. Set to.

  In addition, an open / close valve is connected to four of the five switch devices, and another open / close valve is disposed between the vacuum pump and the suction pipe f0. Then, the six suction pipes respectively arranged in the five switching devices and the aforementioned suction pipes a0, b0, c0, d0, e0, f0 are connected in accordance with the connection arrangement in FIG. The rotation speed is set so that the disk of the switching device makes one rotation while the object is conveyed in the 6L section.

  In the embodiments described so far, a timing belt having a back plate portion in which suction holes are formed is used as the transport belt. However, as shown in the sectional view of FIG. A timing belt having an omitted structure may be used. In this case, the thickness (H7 + H8) of the belt is set to be slightly smaller than SG1 + SG2 in FIG. 3, and H7 is set to be slightly smaller than SG1, thereby forming a suction hole formed in the top plate. Thus, it becomes possible to perform vacuum suction by sucking the interdental gap formed on the upper side of the conveyor belt.

  Moreover, a vacuum adsorption type belt conveyor can also be comprised using the conveyance belt as shown in sectional drawing of FIG. 15 which excluded the tooth | gear for performing a timing function. In this case, pulleys having no teeth are used as driving wheels and driven wheels provided at the front end portion and the rear end portion of the belt conveyor. Then, the belt thickness (H9 + H10) is set to be slightly smaller than SG1 + SG2 in FIG. 3, and H9 is set to be slightly smaller than SG1 to perform the desired vacuum suction operation. Make it possible.

  Furthermore, as another example, for example, vacuum suction type conveyance can be performed using the conveyance belt shown in FIG. This figure is an enlarged perspective view of the conveyor belt, and → M in the figure represents the belt traveling direction. The conveyor belt is formed with a large number of irregularities on the surface so that the object to be conveyed is less likely to be displaced on the conveyor belt.

  As shown in the figure, the conveyor belt has a structure in which a groove penetrating in the width direction of the belt is formed by unevenness formed on the surface. By sucking from both sides, the object to be conveyed can be adsorbed to the belt and conveyed. And in order to implement | achieve this, while setting the height SG1 of the spacer 18 (and 19) in the belt conveyor shown in FIG. 3 slightly higher than the height H5 of the base part of this conveyance belt, SG1 + SG2 is set to be slightly higher than the thickness (H5 + H6) of the conveyor belt. Also, pulleys that do not have teeth are used as drive wheels and driven wheels of the belt conveyor.

The present embodiment is a vacuum adsorption type belt conveyor which is conveyed by a belt having a cross-sectional structure shown in FIG.
FIG. 18 is a schematic diagram showing a state in which the conveyor belt is wound around the driving wheel and the driven wheel in this belt conveyor. In this figure, 94 and 95 are pulleys (driven wheels) provided on the rear end side and front end side of the belt conveyor, 96 is a toothed pulley (drive wheel), and 97 is a toothed pulley 96, respectively. It is a pulley provided to increase the winding angle of the conveyor belt.

The belt conveyor of the present embodiment uses a structure according to the guide shown in FIG. 3 as a guide. In this case, the thickness (H11 + H12) of the conveyor belt 93 is set to be slightly smaller than SG1 + SG2 in FIG. 3, and H11 is set to be slightly smaller than SG1. The vacuum suction operation can be executed.
In this embodiment, since the driving is performed by the toothed pulley 96, a timing function is also realized.

  This embodiment is a belt conveyor using a vacuum suction type timing belt conventionally used as shown in FIG. In the present embodiment, a state in which the timing belt is wound around the driving wheel and the driven wheel of the belt conveyor is shown in the schematic diagram of FIG.

  In this figure, 44 and 45 are pulleys (driven wheels) provided on the front end side and the rear end side of the belt conveyor, respectively, and on the outer periphery of these pulleys, seat belts as shown in the figure 40 is wound. The timing belt 35 is wound around a toothed pulley (drive wheel) 46 through the outside of the seat belt.

  In this embodiment, by adopting the winding form as described above, when the air in the interdental space is sucked from both sides of the timing belt, the air is supplied to the interdental space from below the timing belt. It is blocked by the seat belt 40 so that the conveyed object is reliably adsorbed.

  Next, the guide in the present embodiment will be described. First, FIG. 21 shows a cross-sectional view of the belt conveyor of the present embodiment taken along a plane corresponding to the VW plane of FIG. 1 (note that the structure relating to the drive wheels 46 and the like is omitted in this figure). is there). The left and right guides include bases 21 and 22 having vacuum chambers, a support plate 20 spanned between the two bases, top plates 36 and 37 each having a suction hole formed on the bottom surface, and support of these top plates. It is composed of ultrathin plates 38 and 41 having elasticity for airtightness interposed between the plates and seat belt guide plates 39 and 42.

  As shown in this figure, the seat belt 40 travels with its left and right ends sandwiched between the support plate 20 and the ultrathin plates 38 and 41 while the left and right are regulated by the seat belt guide plates 39 and 42. . Further, the timing belt 35 travels with the left and right end portions placed on the upper sides of the ultrathin plates 38 and 41. For reference, an enlarged perspective view near the front end of the top plate 36 is shown in FIG.

  In this embodiment, when the suction operation is started by the suction pipe a <b> 1, the timing belt 35 rises and comes into close contact with the conveyed object, and the seat belt 40 also rises and comes into close contact with the teeth of the timing belt 35. In order to easily raise the seat belt, vent holes are provided at several places on the support plate 20 (see the vent holes 48 in FIG. 22).

  And as FIG. 22 shows, since the inner side vicinity of the bottom face of the top plate 36 (and 37) is a taper surface which turned slightly upward, and furthermore, the ultrathin plates 38 and 41 have elasticity, When the seat belt is raised, the vicinity of the ends of the ultrathin plates 38 and 41 is pushed upward by the seat belt, and is bent as shown by → P in FIG. 22 so as to come into contact with the timing belt 35.

This reliably prevents the air in the gap between the support plate 20 and the seat belt 40 from being sucked.
Note that the suction control system described in the first embodiment can be used as it is as the suction control system used in the belt conveyors of the second and third embodiments described above.

  Although the present invention has been described with respect to three embodiments and some examples of configuration changes, the present invention is of course not limited to these embodiments. In addition to the structural changes described above, those skilled in the art can configure embodiments in which various changes are made in the details within the scope of the technical idea of the present invention. It is also clear that such embodiments are not excluded from the scope of the present invention.

It is a figure which shows the 1st Example of the conveying apparatus ( belt conveyor apparatus ) by this invention. It is a figure which shows the cross section of the suction hole and timing belt in the Example. It is an expansion perspective view of the guide in the Example. It is a disassembled perspective view of the guide in the Example. It is a perspective view of the base in the Example. It is sectional drawing of the Example. It is a figure which shows the other structural example of the base in the Example. It is sectional drawing of the guide using the other example of a structure. It is a figure which shows the other structural example of the timing belt in the Example. It is a general view of the suction control system in the same embodiment. It is a figure which shows the rotary type suction path switching apparatus used for the suction control system. It is a figure explaining operation | movement of the rotary type suction path switching device. It is a figure which shows the suction | attraction force of the suction pipe in a present Example. It is a figure which shows another structural example of the timing belt in the Example. It is a figure which shows the further another structural example of the timing belt in the Example. It is a figure which shows another example of a structure of the timing belt in the Example. It is sectional drawing of the timing belt used in the 2nd Example of the belt conveyor apparatus by this invention. It is a figure which shows the winding state of the timing belt in the Example. It is sectional drawing of the timing belt used in the 3rd Example of the belt conveyor apparatus by this invention. It is a figure which shows the winding state of the timing belt in the Example. It is sectional drawing of the belt conveyor of the Example. It is an expansion perspective view of the guide in the Example. It is a figure which shows the conventional vacuum suction type belt conveyor.

11 Interdental space 18, 19, 73 Spacer 20 Support plate 21, 22 Base 23, 47 Suction hole 24, 25, 27 Hole 28, 29 Vacuum chamber 36, 81, 87 Top plate 40 Seat belt 44, 45, 94, 95 97 Pulley 46, 96 Toothed pulley 48 Ventilation hole 50 Vacuum pump 51 Setting device 53, 54, 555 Open / close valve 71 Motor 72 Deceleration mechanism 74 Fan-shaped opening 76 Disk 78 Opening 83 Drive wheel 84 Adsorption hole 85 Driven wheel

Claims (8)

A conveying device for conveying an object to be conveyed,
A belt member (86, 89, 35, 93) for conveying the object to be conveyed;
A drive mechanism (83, 96, 46) for driving the belt member;
When the belt member is driven by the drive mechanism, the belt member is supported so that the upper surface of the belt member is lower than the upper surface by a predetermined minute height when the drive mechanism is not driven. Both side members (81, 87, 21, 22, 18, 19, 36 to 42) arranged on both sides;
A belt support member (20) fixed to the both side members and supporting the belt member from below;
The belt member is formed by vacuum-sucking a space formed between the lower surface of the conveyed object supported by the both side members and the upper surface of the belt member to raise the belt member to adsorb the conveyed object. A vacuum suction mechanism (23, 28, a1) that makes it possible to transport the object to be transported,
A conveying apparatus comprising: The conveying device according to claim 1, wherein the belt member includes a plurality of suction holes (84) penetrating from the upper surface to the lower surface, and the vacuum suction mechanism performs vacuum suction through the suction holes of the belt members. A plurality of teeth extending in the width direction are formed on the lower surface of the belt member (89, 35), and the vacuum suction mechanism defines the space via an interdental space (11) formed by these teeth. The conveying apparatus according to claim 2, which performs vacuum suction. The conveying device according to claim 1 or 2, wherein the belt support member includes a vent hole (48) opened to the atmosphere. The vacuum suction mechanism includes a plurality of suction holes (23) opened on inner side surfaces of the both side members facing the interdental space, and vacuum chambers (28, 29) communicating with the suction holes. 4. The transfer device according to 4. The transfer apparatus according to claim 5, wherein a vacuum chamber of the vacuum suction mechanism is provided inside the both side members. The conveying device according to claim 3, wherein the drive mechanism (96, 46) includes a toothed pulley that engages with a tooth portion of the belt member. A plurality of tooth portions extending in the width direction are formed on an upper surface of the belt member (93), and the vacuum suction mechanism vacuum-sucks the space through an interdental space formed by these tooth portions. The transfer apparatus according to 1.