JP6044408B2 - Belt with profile and belt conveyor - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt with a profile and a belt conveyance device, and more particularly, it is possible to maintain the fixed state of the profile without dropping the profile during use and to remove the belt from the pulley when the profile is damaged. The present invention also relates to a belt with a profile capable of easily exchanging only the profile on site and a belt conveying apparatus having the belt.

  2. Description of the Related Art A belt conveyance device is known as a conveyance device that conveys a conveyance article such as a plate-like object or a rod-like object. This belt conveyance device rotates a pulley with a profile by rotating a pulley, and conveys a conveyance article placed on the belt with a profile.

  The profile is also called an attachment, a protrusion, or the like, and is provided in a protrusion shape protruding from the back surface of the belt body. The belt with a profile conveys the conveyed article placed thereon while partitioning the conveyed article by the profile or pushing the conveyed article by the profile.

  Conventionally, a profile-equipped belt in which this profile is constituted by a plate-like support portion projecting from the back surface of the belt body and a protruding member fixed to the plate-like support portion by being injection-molded so as not to be attached or detached. Is known (Patent Documents 1 and 2).

  By the way, such a profile may be damaged or lost due to long-term use due to repeated contact with the conveyed article during use. Continuing to use a belt with a damaged profile may cause troubles such as disturbing the conveyance state of the conveyed product. In the worst case, there is a problem of stopping the line, so the damaged profile is repaired early. Need to be replaced.

  However, as described in Patent Documents 1 and 2, in the profile configured by fixing the protruding member to the plate-like support portion so as not to be detachable, only the profile cannot be exchanged, so the belts must be exchanged. There is a problem that the repair cost becomes high.

  For this reason, conventionally, an elastic material such as urethane resin is used for the projecting member, and the projecting member can be attached and detached by elastically engaging the projecting member with the plate-like support portion. A configured belt with a profile has been proposed (Patent Document 3).

JP 2001-106318 A JP 2002-87566 A JP 2005-145568 A

  According to the technique described in Patent Document 3, when the profile is damaged, it is not necessary to remove the entire belt from the pulley, it is possible to remove only the protruding member and replace it on site, and directly contact the conveyed article. Since the projecting member is an elastic material, even when a load is applied due to a collision with the transported article, the projecting member is elastically deformed so that both the projecting member and the transported article can be hardly damaged. Conceivable.

  However, since the projecting member constituting the profile is attached only by elastically engaging the plate-like support portion, the projecting member is elastically affected by a decrease in elasticity of the projecting member due to long-term use. There is a problem that the combined state becomes loose and the protruding member may be accidentally dropped during use.

  In addition, the elastic material such as urethane resin used for the projecting member generally has a large gripping force (frictional force). Therefore, when it comes into contact with the transported article, it is slippery and may be caught or rubbed. There is also a problem that damage to the protruding member is accelerated.

  If the protruding member is formed of a relatively hard material having a low friction coefficient in order to cope with the occurrence of catching and rubbing with the conveyed article, it is impossible to perform elastic engagement with the plate-like support portion. Or, even if it is difficult to engage, the load due to contact with the transported article cannot be absorbed elastically, so depending on the size of the load, the projecting member and the plate-like support are engaged. Is easily released, and in this case as well, there is a problem that the protruding member unexpectedly falls off during use.

  Therefore, the present invention can maintain the fixed state of the profile for a long time without dropping off the profile during use, and if the profile is damaged, the profile can be removed on site without having to remove the belt from the pulley. It is an object of the present invention to provide a belt with a profile that can be easily replaced.

  In addition, the present invention can maintain the fixed state of the profile over a long period of time without losing the profile from the belt with the profile during use, and when the profile is damaged, there is no need to remove the belt from the pulley. Another object of the present invention is to provide a belt conveying device having a belt with a profile that can easily replace only the profile at the site.

  Other problems of the present invention will become apparent from the following description.

  The above problems are solved by the following inventions.

1. In a belt with a profile having a profile on the back of the belt body,
The profile is divided into a profile base projecting from the back of the belt body and a profile cover that is detachably mounted so as to cover the profile base, and a heat shrink tube is provided on the profile cover. A belt with a profile, wherein the profile cover is fixed to the profile base by covering and shrinking the heat shrinkable tube.

  2. 2. The profiled belt according to claim 1, wherein the heat shrinkable tube is made of a fluororesin selected from PFA, PTFE, FEP, and ETFE.

  3. 3. The belt with a profile according to 1 or 2, wherein a surface treatment for improving adhesion to the profile cover is applied to an inner surface of the heat shrinkable tube.

4). The profile cover has an engagement groove configured to engage with the profile base from the side only, and the profile base slides and engages with the engagement groove from the side. Is attached to the profile base so that it cannot be moved upward,
The heat-shrinkable tube is covered over the entire side surface of the profile cover attached to the profile base, and the heat-shrinkable tube shrinks, so that the profile cover is laterally moved with respect to the profile base. 4. The belt with a profile according to the above 1, 2, or 3, wherein the belt is fixed so as not to move.

5. In a state where the profile cover is attached to the profile base, the profile base has a recess recessed from the side surface of the profile cover over the profile base,
The heat-shrinkable tube is covered over the entire circumference of the side surface of the profile cover so as to cover the recess, and the heat-shrinkable tube contracts, so that the profile cover moves upward and laterally with respect to the profile base. 4. The belt with a profile according to the above 1, 2, or 3, wherein the belt is fixed so as to be unable to move to the belt.

  6). The belt with a profile according to any one of 1 to 5, wherein the profile base is fused to a back surface of the belt main body.

  7). A belt conveying device comprising the belt with a profile according to any one of 1 to 6 spanned on a pulley.

  According to the present invention, the profile can be maintained for a long period of time without dropping off during use, and when the profile is damaged, the profile is not required to be removed from the pulley in the field when the profile is damaged. It is possible to provide a belt with a profile that can be easily replaced only.

  Further, according to the present invention, the profile can be maintained for a long time without dropping from the belt with the profile during use, and when the profile is damaged, the belt is removed from the pulley. It is possible to provide a belt conveyance device having a belt with a profile that can be easily replaced only on the site without necessity.

(A) is a front view which shows 1st Embodiment of the belt with a profile which concerns on this invention, (b) is the side view. FIG. 1 is an exploded perspective view for explaining a state in which a profile cover is attached to a profile base in the belt with a profile shown in FIG. The disassembled perspective view explaining a mode that a heat shrinkable tube is covered on the profile cover in the belt with the profile shown in FIG. (A) is a front view which shows 2nd Embodiment of the belt with a profile which concerns on this invention, (b) is the side view. FIG. 4 is an exploded perspective view for explaining how the profile cover is attached to the profile base in the belt with the profile shown in FIG. FIG. 4 is an exploded perspective view for explaining a state in which the heat shrinkable tube is covered on the profile cover in the belt with the profile shown in FIG. (A) is a front view which shows 3rd Embodiment of the belt with a profile which concerns on this invention, (b) is the side view. The perspective view which shows an example of the belt conveying apparatus using the belt with a profile which concerns on this invention

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
1 to 3 show a first embodiment of a belt with a profile according to the present invention. FIG. 1A is a front view of a belt with a profile, FIG. 2B is a side view thereof, and FIG. 2 is an exploded perspective view for explaining how a profile cover is attached to a profile base in the belt with a profile shown in FIG. 3 is an exploded perspective view for explaining a state in which the heat shrinkable tube is covered on the profile cover in the belt with the profile shown in FIG.

  The profiled belt 1A includes a belt body 2 having a predetermined width extending in a belt shape in the belt length direction (left and right direction in FIG. 1B), and a plurality of teeth protruding from one surface of the belt body 2 And a toothed belt having a portion 3.

  The belt body 2 and the tooth portion 3 can be formed using an elastic material generally used for this type of belt. As this elastic material, a urethane resin can be preferably used.

  The tooth portions 3 are arranged at equal intervals along the belt length direction and are formed integrally with the belt body 2.

  A plurality of core wires 22 are embedded in the belt body 2. Each of the core wires 22 extends along the belt length direction, and is parallel to each other at equal intervals. Each core wire 22 is generally made of a stranded wire, and a chemical fiber such as an aramid fiber, a glass fiber, a carbon fiber, or a polyester fiber can be used in addition to a metal wire such as steel or stainless steel.

  A plurality of profiles 4 are projected at a predetermined pitch at equal intervals in the belt length direction on the rear surface 21 which is the surface opposite to the surface on which the tooth portion 3 of the belt body 2 is projected. Yes. Each profile 4 includes a profile base 41 projecting as a plate-like small protrusion from the back surface 21 of the belt body 2 and a profile cover 42 detachably mounted so as to cover the profile base 41. It is divided into two parts.

  The profile base 41 is formed in a plate shape in which the belt width direction is slightly narrower than the width of the belt main body 2 and is thin in the belt length direction. A concave groove 411 extending linearly along the belt width direction is formed.

  The protruding portion of the profile base 41 is located at a portion on the back surface 21 side corresponding to the protruding portion of the tooth portion 3 of the belt body 2 as shown in FIG. Protruding the profile base 41 at this position hardly affects the flexibility of the belt body 2 between the tooth portions 3 and 3. For this reason, the belt 1 with a profile can prevent the winding property fall at the time of being wound around the pulley of a belt conveying apparatus.

  In order to further suppress the deterioration of the wrapping property of the belt body 2 around the pulley, as shown in FIG. 1B, the profile base 41 is arranged in the belt length direction at the lower end where the profile base 41 is in contact with the back surface 21 of the belt body 2. It is more preferable to project the profile base 41 so that the thickness W1 along the tooth portion 3 falls within the region of the width W2 or less along the belt length direction.

  The profile base 41 is generally formed of a synthetic resin, but the material thereof may be the same material as the belt body 2 or a different material. For the purpose of avoiding a partial increase in rigidity of the belt body 2 at the projecting portion of the profile base 41 and further reducing the damage by elastically deforming the profile 4 when it collides with the conveyed article, It is preferable to use a synthetic resin having a hardness equal to or lower than the hardness. If an example of the hardness is given, the thing of Shore hardness A55-92 can be used. In the present embodiment, urethane resin is used as the material of the profile base 41 in the same manner as the belt body 2.

  When the profile base 41 is made of the same material as the belt main body 2, the profile base 41 may be formed integrally with the back surface 21 of the belt main body 2 or formed separately from the belt main body 2. The profile base 41 may be joined to the back surface 21 after the belt body 2 is formed. In the latter case, the belt main body 2 and the tooth portion 3 can be molded using an existing mold as it is.

  When the profile base 41 is made of a different material from the belt body 2, a method is adopted in which the profile base 41 formed separately from the belt body 2 is joined to the back surface 21 after the belt body 2 is formed.

  The method of joining the profile base 41 formed separately from the belt body 2 to the back surface 21 of the belt body 2 includes joining using an adhesive, joining by fusion, and the like. preferable. Generally, heat fusion or high-frequency fusion can be used for the fusion.

  In addition, when performing high frequency fusion, in order to prevent the core wire 22 embedded in the belt body 2 from being melted to the resin around the core wire 22 when a high frequency is applied, other than metal wires and carbon fiber wires. It is preferable to use a core wire made of a non-conductive material.

  The profile cover 42 is formed in a size and shape that can cover the profile base 41 from both side surfaces to the upper surface of the profile base 41 arranged in the belt length direction.

  As shown in FIG. 2, the profile cover 42 is formed with an engagement groove 421 formed in a shape that matches the side surface shape of the profile base 41 in the belt width direction. The engagement groove 421 is open on both side surfaces and the lower surface of the profile cover 42. As shown in FIG. 3, the engagement groove 421 is opened when the profile cover 42 is attached to the profile base 41. The side surfaces of the profile base 41 are exposed on both side surfaces. On the inner surface of the engagement groove 421, two ridges 422 that engage with the concave groove 411 of the profile base 41 are provided so as to extend along the belt width direction and face each other.

  As a result, the profile cover 42 is engaged with the concave groove 411 of the profile base 41 from the side only with respect to the profile base 41, and the profile base 42 is in the concave and convex engagement state. 41 is attached so as to be sandwiched and covered. The profile cover 42 is engaged with the concave groove 411 of the profile base 41 formed along the belt width direction by the convex ridge portion 422 of the engagement groove 421. It is impossible to move upward in the vertical direction, and it does not slip out upward when mounted.

  The material of the profile cover 42 can be the same as that of the profile base 41 and the belt body 2. Further, a different material can be used by utilizing the fact that it is a separate part from the profile base 41.

  For the purpose of reducing damage when the profile cover 42 collides with the conveyed article, the profile cover 42 has a low hardness such that the profile cover 42 has a hardness equal to or lower than that of the profile base 41 so as to be a flexible and elastic profile cover 42. It is preferable to use a synthetic resin. For example, in the case of this embodiment, a low-hardness urethane resin that is equal to or lower than the hardness of the profile base 41 can be used.

  Further, for the purpose of improving the durability of the profile cover 42 and the slipperiness when contacting the conveyed product, the hardness of the profile cover 42 is higher than the hardness of the profile base 41 so that the profile cover 42 is slippery and hard. It is preferable to use a higher one. For example, when a urethane resin is used, one having a hardness higher than the hardness of the profile base 41 in the range of Shore hardness A70 to 98 can be used.

  When the material of the profile cover 42 is different from that of the profile base 41, the durability of the profile cover 42 and the slipperiness upon contact with the transported article can be improved by using a plastic having a Rockwell hardness R50 to 130. it can. Examples of such plastics include acetal, polyamide, polycarbonate, and ABS resin.

  The profile cover 42 is covered with an annular heat-shrinkable tube 43 over the entire circumference of the side surface of the profile cover 42 while being attached to the profile base 41.

  The heat-shrinkable tube 43 tightens the entire circumference of the side surface of the profile cover 42 including the exposed portion of the profile base 41 exposed from the engagement grooves 421 on both side surfaces of the profile cover 42 when contracted by applying heat at a predetermined temperature. So close. The profile cover 42 is prevented from moving laterally with respect to the profile base 41 by the heat-shrinkable tube 43 that is in close contact in the contracted state. Therefore, the profile cover 42 is moved upward and laterally with respect to the profile base 41 in combination with the fact that the upward movement due to the concave and convex engagement by the engagement groove 421 is impossible as described above. Is disabled and fixed.

  Moreover, since the heat-shrinkable tube 43 is formed in a tube shape with a plastic film or a plastic sheet, it can be easily cut out with an appropriate cutting tool such as a cutter. Thereby, the fixed state with respect to the profile base 41 of the profile cover 42 can be cancelled | released easily. Accordingly, the profile cover 42 is detachably fixed to the profile base 41 by the heat shrinkable tube 43.

  The profile cover 42 is fixed to the profile base 41 by the heat shrinkable tube 43, but the lower surface of the profile cover 42 is not fixed to the back surface 21 of the belt body 2. For this reason, there is no possibility that the profile cover 42 affects the bending operation of the belt body 2.

  The lower surface of the profile cover 41 may be in contact with the back surface 21 of the belt body 2 or may be separated from the back surface 21 as shown in FIG. If the profile cover 42 is separated from the back surface 21, when the profile cover 42 is slid from the side and attached to the profile base 41, resistance due to rubbing against the back surface 21 is eliminated, so that the attachment becomes easy. Further, even if there is a molding error in the height direction of the profile base 41 or the profile cover 42, it can be absorbed by the separation distance between the lower surface of the profile cover 42 and the back surface 21.

  As described above, the profile cover 42 is further covered with the heat-shrinkable tube 43, so that the material of the profile cover 43 and the material of the heat-shrinkable tube 43 can be appropriately selected, and the degree of freedom of selection of each material is high. There is an advantage.

  That is, since the heat shrinkable tube 43 is in direct contact with the conveyed article during conveyance of the conveyed article, the heat shrinkable tube 43 has a small friction coefficient when it is desired to reduce the occurrence of catching or rubbing on the conveyed article. Can be used. As a result, it is possible to prevent the profile 4 from being damaged, the positional deviation of the conveyed article, and the like from being caught or rubbed by the conveyed article.

  In addition, by using the heat shrinkable tube 43 having a small friction coefficient as described above, the profile base 41 and the profile cover 42 are made of a low-hardness material while the conveyance article can be prevented from being caught or rubbed. Further, it is possible to improve the wrapping property of the profiled belt 1 </ b> A with respect to the pulley, and to elastically deform and reduce the impact when the conveyed article collides with the profile 4. Thereby, it is possible to simultaneously solve the conflicting problems of the reduction of catching and rubbing, the improvement of the winding property and the impact relaxation.

  As a value of the friction coefficient of the heat shrinkable tube 43, a value of a dynamic friction coefficient (conforming to JIS K7125) is 0.40 or less, preferably 0.30 or less, more preferably 0.20 or less, and particularly preferably 0.15 or less. It is to do.

  As a material of the heat shrinkable tube 43 having such a small friction coefficient, a fluororesin is preferable. Fluororesin includes PFA (tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer), PTFE (polytetrafluoroethylene), FEP (tetrafluoroethylene / hexafluoropropylene copolymer), ETFE (tetrafluoroethylene / ethylene copolymer). It is preferable to use a fluororesin selected from polymers. These have a low coefficient of friction and are easily available as commercially available heat-shrinkable tubes.

  The inner surface of the heat-shrinkable tube 43 is preferably subjected to a surface treatment for improving adhesion to the profile cover 42 when contracted. By the surface treatment, the inner surface of the heat shrinkable tube 43 is roughened. Thereby, the contracted heat-shrinkable tube 43 can be firmly adhered to the profile cover 42, and the occurrence of displacement of the heat-shrinkable tube 43 after contraction can be suppressed. Such surface treatment is particularly suitable when a fluororesin is used as the heat shrinkable tube 43.

  As the surface treatment, a known treatment can be appropriately employed. For example, metal sodium treatment, plasma treatment and the like can be mentioned.

  The thickness of the heat shrinkable tube 43 is preferably 30 μm to 500 μm in consideration of durability and workability.

  The heat-shrinkable tube 43 can have an appropriate function depending on the type of the transported article. For example, when the belt 1A with profile is used for a semiconductor manufacturing application that does not want to generate static electricity, the belt 1A with profile suitable for the semiconductor manufacturing application can be easily obtained by using a belt having an antistatic characteristic (antistatic characteristic). Can be configured.

  Next, a method of forming the profile 4 on the profiled belt 1A will be described with reference to FIGS.

  The profile cover 42 is placed on the side of the profile base 41 so that the protruding portion 422 of the engagement groove 421 matches the recessed groove 411 of the profile base 41 with respect to the profile base 41 previously projected on the back surface 21 of the belt body 2. Is slid from one side (belt width direction) and engaged (FIG. 2).

  Next, the heat-shrinkable tube 43 before shrinkage is covered from above the profile cover 42 attached to the profile base 41 so as to surround the entire circumference of the side surface of the profile cover 42 (FIG. 3).

  Thereafter, when the heat-shrinkable tube 43 is shrunk by blowing hot air at a predetermined temperature using a drier, the heat-shrinkable tube 43 is exposed to the entire circumference of the profile cover 42 including the exposed portion of the profile base 41 exposed from the engagement groove 421. Tighten to tighten. The profile cover 42 is fixed to the profile base 41 by the shrinkage of the heat shrinkable tube 43.

  In use, even if an upward force is applied to the profile cover 42, the protruding portion 422 of the engaging groove 421 engages with the recessed groove 411 of the profile base 41 to move upward. Is prevented from coming off from the profile base 41. Further, even if a lateral force is applied to the profile cover 42, the lateral movement is prevented by the contracted heat shrinkable tube 43, so that it does not come off.

  Therefore, the profile cover 42 can maintain the state fixed with respect to the profile base 41 over a long period of time, and does not drop off unexpectedly during use.

  A series of operations for configuring the profile 4 on the back surface 21 of the belt main body 2 as described above is performed by sliding the profile cover 42 from the side with respect to the profile base 41 and attaching and mounting the heat shrinkable tube 43. All you have to do is shrink it. For this reason, only the profile cover 42 that needs to be repaired and replaced can be individually repaired and replaced on site.

  In addition, since the portion directly in contact with the transported article can be exclusively used as the heat shrinkable tube 43, in most cases, the repair and replacement work due to damage or the like only requires repair and replacement of the heat shrinkable tube 43. Since this operation is completed simply by excising the heat-shrinkable tube 43 using a cutter or the like, and covering and shrinking the new heat-shrinkable tube 43, it can be performed very easily.

  Moreover, even if the profile cover 42 itself is damaged, the heat shrink tube 43 is similarly cut using a cutter or the like, and the profile cover 42 is slid sideways to be detached from the profile base 41. Since a new profile cover 42 is attached to 41 in the same manner as described above and the heat-shrinkable tube 43 only needs to be in close contact, the replacement operation of the profile cover 42 can be performed very easily.

  Since these repair and replacement operations can be performed while the profiled belt 1A is wound around the pulley, there is no need to remove the entire profiled belt 1A from the pulley.

(Second Embodiment)
4 to 6 show a second embodiment of a belt with a profile according to the present invention. FIG. 4A is a front view of a belt with a profile, FIG. 4B is a side view thereof, and FIG. 5 is an exploded perspective view for explaining how a profile cover is attached to a profile base in the belt with a profile shown in FIG. 6 is an exploded perspective view for explaining a state in which the heat shrinkable tube is covered on the profile cover in the belt with the profile shown in FIG. The parts denoted by the same reference numerals as those in FIGS. 1 to 3 are parts having the same configuration, and detailed description thereof will be omitted.

  The belt with profile 1 </ b> B in this embodiment is configured such that the profile cover 42 can be detachably attached to the profile base 41 from above.

  In the profile base 41, concave portions 412 are formed on both side surfaces arranged in the belt width direction so as to cover the entire thickness direction of the profile base 41, respectively. Therefore, when the profile base 41 is viewed from the belt length direction, the width of the concave portion 412 is partially narrowed. Thus, step portions 412a and 412b are connected to the profile base 41 at the upper and lower portions of the recess 412 respectively.

  On the other hand, the profile cover 42 attached to the profile base 41 is formed with an engagement groove 421 formed in a shape matching the side surface shape of the profile base 41 in the belt width direction as shown in FIG. ing. The engagement groove 421 is the same as the engagement groove 421 of the profile cover 42 shown in FIG. 2 except that the protrusion 422 is not provided.

  On both side surfaces of the profile cover 42 arranged in the belt width direction, recesses 423 formed in the same shape as the recesses 412 of the profile base 41 are provided in the entire thickness direction of the profile cover 42. Therefore, when the profile cover 42 is viewed from the belt length direction, like the profile base 41, the width of the concave portion 423 is partially narrowed. Thus, step portions 423a and 423b are connected to the profile cover 42 at the upper and lower portions of the recess 423, respectively.

  The concave portion 423 of the profile cover 42 is formed to match the position and shape of the concave portion 412 of the profile base 41 when mounted on the profile base 41. For this reason, the profile 4 has the concave portion 412 of the profile base 41 and the concave portion 423 of the profile cover 42 in a state where the profile cover 42 is attached to the profile base 41, as shown in FIGS. In addition, the profile cover 42 has a recess 4a that is recessed from both side surfaces of the profile cover 42 to the profile base 41.

  The heat-shrinkable tube 43 is contracted by covering the recess 4a. That is, the heat-shrinkable tube 43 surrounds the entire circumference of the side surface including the exposed portion of the profile base 41 exposed from the engaging groove 421 on the side surface of the profile cover 42, and the inside of the concave portion 412 of the profile base 41 and the concave portion of the profile cover 42. It is covered and shrunk so as to wind around the inside of 423.

  Next, a method for forming the profile 4 in the belt 1B with the profile will be described with reference to FIGS.

  A profile cover 42 is put on and attached to the engagement groove 421 from above the profile base 41 previously projected on the back surface 21 of the belt body 2 (FIG. 5).

  At this time, the concave portions 412 of the profile base 41 and the concave portions 423 of the profile cover 42 are brought into a matched state, whereby concave portions 4a and 4a are formed on both side surfaces of the profile 4, respectively.

  Next, the heat shrinkable tube 43 before shrinkage is covered from above the profile cover 42 attached to the profile base 41 so as to surround the entire circumference of the side surface of the profile cover 42, and the recesses 4 a and 4 a are covered with the heat shrinkable tube 43. Cover (FIG. 6).

  Thereafter, when the heat shrinkable tube 43 is shrunk by blowing hot air of a predetermined temperature onto the heat shrinkable tube 43 using a dryer, the heat shrinkable tube 43 includes a profile cover including the exposed portion of the profile base 41 exposed from the engagement groove 421. It closely adheres to the entire circumference of the side surface of 42. The contracted heat-shrinkable tube 43 is accommodated in the recesses 4 a and 4 a of the profile 4 and fastens both the profile base 41 and the profile cover 42, so that the profile cover 42 is fixed to the profile base 41.

  In use, when an upward force is applied to the profile cover 42, the lower step 423b of the concave portion 423 of the profile cover 42 tries to lift the contracted heat-shrinkable tube 43 upward. However, the heat-shrinkable tube 43 collides with and catches on the step 412a on the upper part of the concave portion 412 of the profile base 41, thereby preventing upward movement, so that it does not come off the profile base 41. Further, even if a lateral force is applied to the profile cover 42, the contraction of the heat shrinkable tube 43 prevents the lateral movement, so that the profile cover 42 does not come off.

  Also in this embodiment, the same effect as the first embodiment described above can be obtained. In addition, since the profile cover 42 can be attached to the profile base 41 from above, the profiled belt 1B is suitable for use in an environment where a working space cannot be secured on the side of the belt body 2. It is.

(Third embodiment)
FIG. 7 shows a third embodiment of the belt with a profile according to the present invention, wherein (a) is a front view and (b) is a side view thereof. The parts denoted by the same reference numerals as those in FIGS. 1 to 3 are parts having the same configuration, and detailed description thereof will be omitted.

  The profiled belt 1 </ b> C is provided with a covering material 5 on the back surface 21 of the belt body 2. The covering material 5 protects the back surface 21 of the belt body 2 when the transported article is placed on the back surface 21 of the belt main body 2, and the profile base 41 is used to reduce friction with the transported article. It is provided except for the projecting part.

  The friction coefficient of the coating material 5 is a value of a dynamic friction coefficient (conforming to JIS K7125) of 0.40 or less, preferably 0.30 or less, more preferably 0.20 or less, and particularly preferably 0.15 or less. is there.

  As such a covering material 5, a sheet or cloth formed of any one of PFA, PTFE, FEP, ETFE, 6 nylon, and 66 nylon can be used.

  The covering material 5 may be provided on the back surface 21 after the belt body 2 is formed, or may be integrally formed when the belt body 2 is formed.

  When the profile base 41 is formed separately from the belt body 2 and then provided on the back surface 21 of the belt body 2 by fusion or the like, first, the covering material 5 is first formed on the back surface 21 of the belt body 2, and then the profile base is formed. It is only necessary to expose the back surface 21 by removing only the portion from which 41 is projected by post-processing using an appropriate machine tool, and then provide the profile base 41.

  Similarly to the heat shrinkable tube 43, the covering material 5 can have an appropriate function depending on the type of the transported article. For example, when this profiled belt 1C is used for semiconductor manufacturing applications that do not want to generate static electricity, a coating material 5 having an antistatic property (antistatic property) is used as a covering material 5 that is in direct contact with the transported article. Thus, the profiled belt 1C with the covering material 5 suitable for the semiconductor manufacturing application can be easily configured.

  Here, the profile 4 has the structure shown in the first embodiment, but it is needless to say that the profile 4 shown in the second embodiment may be used.

(Belt conveyor)
The belts 1A, 1B, and 1C with profiles of each embodiment described above constitute a belt conveying device 100 by being bridged between pulleys 101 and 101 as shown in FIG. Here, two sets of profiled belts 1A, 1B, and 1C spanned between the pulleys 101 and 101 are used, and these are arranged in parallel at a predetermined interval and synchronously driven in the same direction to form a plate-like length. The scale 200 is conveyed.

  Each plate-like conveyed product 200 is placed so as to be partitioned between the profiles 4 and 4 fixed on the belts 1A, 1B and 1C with profiles, and is conveyed while being pushed by the profiles 4.

  If the profile 4 is damaged due to long-term use or the like and needs to be repaired or replaced, the profiled belts 1A, 1B and 1C are removed from the pulleys 101 and 101, and only the target profile 4 is removed. As described above, the replacement work can be easily performed on site.

(Other embodiments)
Although the belts 1A, 1B, and 1C with profiles described above are illustrated as toothed belts having the tooth portions 3, the tooth portions 3 are not necessarily provided.

  Moreover, the number of the profiles 4 protruding from one profile-equipped belt 1A, 1B, 1C only needs to be one or more, and can be appropriately set according to the purpose.

  Furthermore, the concave grooves 411 formed in the profile base 41 shown in FIGS. 1 to 3 are not limited to those formed on both side surfaces of the profile base 41 arranged in the belt length direction, but only at least one side surface. It may be formed. In this case, only one convex portion 422 of the profile cover 42 may be formed in the engaging groove 421 in accordance with the concave groove 411.

  The profile base 41 shown in FIGS. 1 to 3 is provided with the concave groove 411. However, instead of providing the concave groove 411, a convex strip may be provided. You may make it arrange a protruding item | line part in parallel. In this case, a concave groove may be provided in the engagement groove 421 of the profile cover 42 so as to correspond to the convex line portion of the profile base 41 instead of or in addition to the convex line portion 422. In addition, the ridge portion is not limited to be formed so as to extend in the belt width direction as illustrated, but may be a mere convex portion formed in a protruding shape.

  Further, the recesses 4a of the profile 4 shown in FIGS. 4 to 6 are not limited to those formed on both side surfaces arranged in the belt width direction, and the heat shrink tube 43 of the heat shrink tube 43 is moved along with the upward movement of the profile cover 42. What is necessary is just to be formed in the at least 1 side of the profile 4 so that the upward movement can be prevented in the step part formed in the profile base 41.

1A, 1B, 1C: Belt with profile 2: Belt body 21: Back surface 22: Core wire 3: Tooth part 4: Profile 4a: Concave part 41: Profil base 411: Concave groove 412: Concave part 412a, 412b: Step part 42: Profile Cover 421: Engaging groove 422: ridge portion 423: recessed portion 423a, 423b: step portion 43: heat shrinkable tube 5: coating material 100: belt conveying device 101: pulley 200: plate-like long object

Claims (7)

In a belt with a profile having a profile on the back of the belt body,
The profile is divided into a profile base projecting from the back of the belt body and a profile cover that is detachably mounted so as to cover the profile base, and a heat shrink tube is provided on the profile cover. A belt with a profile, wherein the profile cover is fixed to the profile base by covering and shrinking the heat shrinkable tube.   2. The profiled belt according to claim 1, wherein the heat shrinkable tube is made of a fluororesin selected from PFA, PTFE, FEP, and ETFE.   The belt with a profile according to claim 1 or 2, wherein a surface treatment for improving adhesion to the profile cover is applied to an inner surface of the heat shrinkable tube. The profile cover has an engagement groove configured to engage with the profile base from the side only, and the profile base slides and engages with the engagement groove from the side. Is attached to the profile base so that it cannot be moved upward,
The heat-shrinkable tube is covered over the entire side surface of the profile cover attached to the profile base, and the heat-shrinkable tube shrinks, so that the profile cover is laterally moved with respect to the profile base. 4. The belt with a profile according to claim 1, wherein the belt is fixed so as not to move. In a state where the profile cover is attached to the profile base, the profile base has a recess recessed from the side surface of the profile cover over the profile base,
The heat-shrinkable tube is covered over the entire circumference of the side surface of the profile cover so as to cover the recess, and the heat-shrinkable tube contracts, so that the profile cover moves upward and laterally with respect to the profile base. 4. The belt with a profile according to claim 1, wherein the belt with a profile is fixed so as not to be able to move to the belt.   The profiled belt according to any one of claims 1 to 5, wherein the profile base is fused to a back surface of the belt body.   A belt conveying device comprising the belt with a profile according to any one of claims 1 to 6 spanned on a pulley.

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