JP5911078B2 - Caterpillar type chain conveyor - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a caterpillar type chain conveyor that conveys an object to be conveyed placed by connecting a large number of chain unit members in a bendable manner.

  The present applicant has proposed a conveyance system that uses the chain conveyor shown in Patent Document 1 and conveys the object to be conveyed to a predetermined position. The chain conveyor used in the transport system includes a drive shaft 9 connected to an electric motor at one end of a pair of main body frames that are relatively arranged at intervals in the width direction of transport and connected by a fixed bar, and the other end. The driven shaft is rotatably supported, and the caterpillar chain is placed on the drive shaft and the sprocket fixed to the driven shaft, and placed on the caterpillar chain that slides on the main body frame as the electric motor is driven. It is comprised so that the conveyed to-be-conveyed object may be conveyed.

The caterpillar chain is made of a fluororesin, and a plurality of unit members having an outer link plate extending to the upper side in the conveying direction and an inner link plate extending to the lower side in the conveying direction are overlapped with each other on both sides of the mounting plate. A fixed shaft is inserted into the inner link plate and the outer link plate and bent.

In the chain conveyor, the unit member of the caterpillar chain is made of fluororesin having excellent activity. However, since the unit member is slid over the main body frame, the unit member is easily worn with time. , Have the problem of poor durability. Further, at the time of transport, there is a problem that wear powder is generated due to the above-mentioned wear and contaminates the surrounding atmosphere, and the wear powder adheres to the object to be transported and deteriorates the quality. In particular, the chain conveyor cannot be used for an application for conveying an object to be conveyed that is required to be processed in a clean room where a high degree of cleanness is required.

JP 2003-40430 A

  The problem to be solved is that when the caterpillar chain travels in a predetermined direction, it wears out by sliding on the main body frame, resulting in poor durability. In addition, wear powder is generated by the sliding contact and adheres to the object to be conveyed, which deteriorates the quality of the object to be conveyed.

The present invention is a state in which an endless conveyor chain in which a large number of chain unit members are bendably connected is supported on a support surface of a main body frame, and a drive rotating body provided at one end and the other end In the chain conveyor over the driven rotor provided in the section, the chain unit member hangs down at the transport orthogonal direction end of the mounting plate on which the object to be transported is placed, toward one of the transport directions The outer link plate that extends and has a bearing hole formed in the center thereof and the outer link plate of the other chain unit member that extends toward the other in the conveying direction and is adjacent to each other and has a shaft support hole in the center portion. A plurality of rolling rollers which are formed between the inner link plates formed integrally with the formed inner link plates, and have bearing holes extending in the orthogonal direction of conveyance and having an axis line in the orthogonal direction of conveyance. If, Choi Is rotatably supported by emission unit members mutually adjacent arranged in the outer link plate and inner link plate of the rolling rollers when the superimposed bearing bore, each end of the conveying orthogonal direction of the inner link plate a connecting shaft which is bearing the bearing hole of the outer link plates by inserting the shaft supporting hole, with consists, each rolling roller, the axial length in the axial direction by equally dividing the interval between the inner link plate In addition, a bearing hole is formed in the central portion, and a connecting protrusion and a connecting recess are formed at diagonal positions centering on the bearing hole on each end surface in the conveyance orthogonal direction, and the connecting protrusion is inserted into the connecting recess. The most important feature is that a plurality of unit rollers are connected in the axial direction.

  The present invention can reduce wear and increase durability when the caterpillar chain runs in a predetermined direction on the main body frame. Further, it is possible to reduce the generation of wear powder when traveling on the main body frame, and to keep the quality of the conveyed object good.

It is a rough-body perspective view which shows the outline of a caterpillar type chain conveyor. It is a disassembled perspective view of a chain unit member. FIG. 2 is a longitudinal sectional view taken along line AA in FIG. 1. FIG. 3 is a longitudinal sectional view taken along line BB in FIG. 1. It is explanatory drawing which shows the conveyance state of a to-be-conveyed object. It is explanatory drawing which shows the example which changes the axial line length of a rolling roller. It is explanatory drawing which shows the rolling roller which concerns on Example 2. FIG. It is a longitudinal cross-sectional view of the chain unit member which concerns on Example 2. FIG. It is explanatory drawing of the chain unit member which concerns on Example 3. FIG. It is a longitudinal cross-sectional view of the chain unit member which concerns on Example 3. FIG.

An outer link plate in which a chain unit member is hung at an end portion in the direction perpendicular to the conveyance direction of a mounting plate on which an object to be conveyed is placed, extends toward one side in the conveyance direction, and has a bearing hole at the center portion. a link member which is integrally formed an inner link plate shaft supporting hole is formed in the center with and located outside the link plates of the other chain unit member adjacent extending toward the other in the conveying direction, the inner link A plurality of rolling rollers which are arranged between the plates and have an axis line in the conveyance orthogonal direction and which have a bearing hole formed in the center extending in the conveyance orthogonal direction, and the chain unit members are arranged adjacent to each other so that the outer link plate and the inner link plate When the link plates are overlaid, they are rotatably supported in the bearing holes of the rolling rollers, and the ends in the direction perpendicular to the conveyance pass through the shaft support holes of the inner link plates and become the bearing holes of the outer link plates. a connecting shaft which is bearing, with consists of the above Rolling rollers, diagonal centered on the bearing hole on each end surface of the conveyance orthogonal direction with the axial length in the axial direction by equally dividing the interval between the inner link plates, the bearing hole in the center is formed A connection protrusion and a connection recess are formed at the respective positions, and a plurality of unit rollers are connected in the axial direction by inserting the connection protrusion into the connection recess .

The present invention will be described below with reference to the drawings showing examples.
As shown in FIGS. 1 to 4, the main body frame 3 of the caterpillar type chain conveyor 1 has a longitudinal direction corresponding to the conveyance length of the object to be conveyed 5 and a longitudinal orthogonal direction corresponding to the width of the object to be conveyed 5. The support surface 3a is formed on the upper surface. A drive shaft 9 connected to an electric motor 7 and having an axis line in the direction perpendicular to the conveyance is rotatably supported at the lower end of the main body frame 3 in the conveyance direction. The drive shaft 9 includes a drive sprocket or the like. The drive rotator 11 is fixed at an appropriate interval with respect to the axial direction. In the example shown in the figure, an example is shown in which the drive rotator 11 is fixed to the end of the drive shaft 9 in the axial direction, but the present invention is not limited to this.

  Further, a driven shaft 13 having an axis in the conveyance orthogonal direction is rotatably supported at the upper end of the main body frame 3 in the conveying direction, and a driven rotating body 15 such as a driven sprocket is provided on the driven shaft 13. The drive rotating body 11 is fixed and matched. A caterpillar type conveyor chain 17 is stretched over the drive rotating body 11 and the driven rotating body 15 so as to be supported on the support surface 3a.

  The conveyor chain 17 has a structure in which a large number of chain unit members 19 formed of a fluororesin are connected to each other so as to be bent endlessly. The chain unit member 19 coincides with the width of the object to be conveyed 5 in the conveyance orthogonal direction, and is on the upper side in the conveyance direction of the pair of side plates 23 that hang down at both longitudinal ends of the mounting plate 21 extending in the conveyance orthogonal direction. A link member 28 integrally formed with an inner link plate 25 extending in the transport direction and an outer link plate 27 extending in the transport direction on the lower side of the side plate 23 in the transport direction and positioned outside the inner link plate 25. , A connecting shaft 29 inserted into shaft support holes 25a and 27a formed at the center of the overlapped outer link plate 27 and inner link plate 25, and rotatably supported by the connecting shaft 29. The outer link plate 27 and the inner link plate 25 are composed of an outer diameter rolling roller 31 that protrudes downward from the lower end of the inner link plate 25 and rolls on the support surface 3a.

  The link member 28 is formed so as to have a mounting plate 21 having a length corresponding to the width of the transported object 5 with respect to the transport orthogonal direction, and a plurality of types are prepared according to the width of the transported object 5. The rolling roller 31 is formed to have an axial length corresponding to the interval between the inner link plates 25 in the link member 28.

  A stepped portion 29a is formed at the shaft end portion of the connecting shaft 29 inserted from the outer link plate 27 and inner link plate 25 side on one side and protruding from the other outer link plate 27 and inner link plate 25, The connecting shaft 29 is prevented from coming off by a retaining member 29b such as a C-ring inserted into the stepped portion 29a. Further, a spacer sleeve 25b is integrally formed on the inner surface of the inner link plate 25 at the periphery of the shaft support hole 25a.

  The rolling roller 31 is a unit of at least two or more (three in the illustrated example) whose axial direction is an axial length obtained by equally dividing the interval between the sleeves 25b of the pair of inner link plates 25. The rollers 33 are connected to each other in the axial direction. A shaft hole 35 through which the connecting shaft 29 is inserted is formed in the central portion of each unit roller 33 so as to penetrate in the axial direction, and each end surface is connected to a diagonal position centering on the shaft hole 35. The protrusion 37 and the connection recessed part 39 are each formed. These three unit rollers 33 constitute the rolling roller 31 by integrally connecting the connecting projections 37 facing each other into the connecting recesses 39.

  In the illustrated example, three unit rollers 33 are connected in the axial direction to form the rolling roller 31. However, the number of unit rollers 33 corresponding to the width between the inner link plates 25 is connected in the axial direction. Thus, the rolling roller 31 having a long axial direction may be configured.

  Next, the conveying action by the caterpillar type chain conveyor 1 configured as described above will be described.

  By driving the electric motor 7, the drive shaft 9 is rotated in a predetermined direction so that the conveyor chain 17 travels in the direction of the solid arrow shown in the figure, and the object 5 is placed on each mounting plate 21 of the traveling conveyor chain 17. Transport. At this time, as shown in FIG. 5, the conveyor chain 17 traveling on the main body frame 3 travels with the rolling roller 31 of each chain unit member 19 rotating relative to the support surface 3a. The resistance is reduced and the wear of each chain unit member 19 is reduced. Further, the wear of each chain unit member 19 of the conveyor chain 17 is reduced by the rolling roller 31 that rolls with respect to the support surface 3a, thereby reducing the generation of wear powder. Further, the connecting protrusion 37 of the unit roller 33 protrudes on the end surface in the axial direction of the rolling roller 31, but the connecting protrusion 37 protrudes between the inner surface of the inner link plate 25 and each end surface of the rolling roller 31. Since the sleeve 25b having an axial length slightly longer than the width is interposed, it is possible to prevent the connection protrusions 37 from coming into contact with the inner surface of the inner link plate 25 and causing poor rotation.

When transporting the transported object 5 having a long width with respect to the transport orthogonal direction, for example, with respect to the link member 28 having the mounting plate 21 having a length corresponding to the width of the transported object 5 as shown in FIG. In the example shown in the drawing, four chain rollers (of course, four or more) can be integrated by connecting the unit rollers 33 in the axial direction. 19 Conveyor chain 17 is formed by connecting the rolling rollers 31 while supporting them so as to rotate.

That is, after the four unit rollers 33 are integrated by fitting the connecting projections 37 on the opposite end faces into the connecting recesses 39 to form the rolling roller 31, the link members 28 are connected to the outer links. After the rolling roller 31 is arranged between the inner link plates 25 arranged between the plates 27, the connecting shaft 29 is connected to the respective shaft support holes 25a and 27a and the shaft holes of the unit roller 33 from the outer link plate 27 side. 35, the shaft end portion is protruded from the other outer link plate 27, and the retaining member 29b is fitted into the protruding step portion 29a of the shaft end so that the rolling roller 31 is attached to the link member 28. At the same time, the link members 28 are connected to each other to form the conveyor chain 17.

  As shown in FIG. 7, the rolling roller 71 according to the second embodiment is configured such that the axial direction has an axial length obtained by equally dividing the interval between the sleeves 25 b in the pair of inner link plates 25, and is positioned on the end side in the axial direction. The end roller 73 and the connecting roller 75 positioned in the middle are connected in the axial direction. Each end roller 73 has a fixed shaft hole 79 in which a fixed shaft 77 inserted through the shaft support holes 25a and 27a is prevented from rotating at the center portion of the end surface located on the inner link plate 25 side, and the other end roller 73 is inserted. A connection hole 83 into which a part (half) of the connection pin 81 is inserted is formed at the center of the end surface, and a connection protrusion 85 and a connection recess 87 are formed at diagonal positions with the connection hole 83 as the center. Is done.

Further, the connecting roller 75 is formed with connecting holes 89 into which a part (half) of the connecting pin 81 is inserted and fitted at the center of both end faces, and at the diagonal positions centering on the connecting hole 89. The part 91 and the connection recessed part 93 are each formed.

In the rolling roller 71, a connecting roller 75 is disposed between the end rollers 73 on both sides, and connecting pins 81 are respectively inserted into the connecting holes 83 and 89, and the opposing connecting protrusions 91 are connected to the connecting recesses 87. The connection protrusions 85 are respectively inserted into the connection recesses 93 and connected in the axial direction. 7 and 8, the same reference numerals are given to substantially the same members as those in the first embodiment, and the detailed description is omitted.
(See Figure 8)

The rolling roller 71 configured as described above is inserted into the shaft support holes 25a and 27a with the inner link plate 25 of the other link member 28 disposed between the outer link plates 27 of the one link member 28. The fixed shaft 77 to be fixed is inserted into the fixed shaft hole 79 of the end roller 73 in a non-rotating state and attached, and the chain unit members 19 are connected to bend each other to form the conveyor chain 17.

  As shown in FIGS. 9 and 10, the chain unit member 101 of the conveyor chain 17 according to the third embodiment extends to one side in the conveyance direction at the lower part of the mounting plate 102 on which the article to be conveyed 5 is placed, The bearing link portion 105 in which the bearing hole 103 is formed in the portion and the other end in the conveying direction extend in parallel to both ends in the conveyance orthogonal direction of the bearing link portion 105 at a predetermined interval, and the shaft support hole in the central portion A link member 111 in which a pair of front and rear shaft link portions 109 formed with 107 is integrally formed of a synthetic resin, and a gap between both ends of the bearing link portion 105 in the conveyance orthogonal direction and an inner surface of each shaft link portion 109, respectively. A rolling roller 117 that is arranged and has a plurality of (two in the illustrated example) unit rollers 115 each having a bearing hole 113 formed in the center, and the bearing holes 103 and 113 and the shaft support hole. 1 Composed of the fixed shaft 119 is inserted into the 7.

Engagement protrusions 121 and engagement recesses 123 are formed at diagonal positions centering on the bearing hole 113 on both end surfaces of the unit roller 115 in the conveyance orthogonal direction, and the engagement protrusions 121 are opposed to each other. A plurality of unit rollers 115 are connected in the axial direction by engaging with the engaging recesses 123 to form a rolling roller 117.

When transporting the object to be transported 5 wider than the transport orthogonal direction, the link member 111 having a length corresponding to the transport orthogonal direction width of the transported object 5 is selected in the transport orthogonal direction of the mounting plate 102. In the link member 111, the distance between both end surfaces of the bearing link portion 105 and the inner surface of the shaft support link portion 109 is wide. Therefore, the axial direction of the rolling roller 117 disposed between the both is in accordance with the interval. It is necessary to change the length.

In this example, for example, three unit rollers 115 corresponding to the interval are connected in the axial direction by engaging the opposing coupling protrusions 121 with the engagement recesses 123, and the axis corresponding to the interval is used. A rolling roller 117 having a long direction width is configured.

In the caterpillar type chain conveyor 1 according to the first to third embodiments, a row of the conveyor chain 17 is stretched between the driving rotary body 11 and the driven rotary body 15 on the support surface 3a of the main body frame 3. However, the caterpillar type chain conveyor 1 may be configured by suspending a plurality of rows of conveyor chains 17 on the support surface 3a.

In addition, the plurality of caterpillar type chain conveyors 1 according to the first to third embodiments are arranged at appropriate intervals in the conveyance orthogonal direction, and the driving shaft 9 and the driven shaft 13 in each caterpillar type chain conveyor 1 are arranged as one. It is good also as a structure comprised by a shaft and making the conveyor chain 17 of each caterpillar type chain conveyor 1 drive | work synchronously by the drive of the single electric motor 7. FIG.

DESCRIPTION OF SYMBOLS 1 Caterpillar type chain conveyor 3 Main body frame 3a Support surface 5 Conveyed object 7 Electric motor 9 Drive shaft 11 Drive rotary body 13 Drive shaft 15 Drive rotary body 17 Conveyor chain 19 Chain unit member 21 Mounting plate 23 Side plate 25 Inner link plate 25a Shaft support hole 25b sleeve 27 outer link plate 27a shaft support hole 28 link member 29 connecting shaft 29a stepped portion 29b retaining member 31 rolling roller 33 unit roller 35 shaft hole 37 connecting projection 39 connecting recess 71 rolling roller 73 end Roller 75 Connection roller 77 Fixed shaft 79 Fixed shaft hole 81 Connection pin 83 Connection hole 85 Connection projection 87 Connection recess 89 Connection hole 91 Connection projection 93 Connection recess 101 Chain unit member 102 Mounting plate 103 Bearing hole 105 Bearing link portion 107 Shaft support hole 109 Shaft support link part 111 Link member 113 Bearing hole 115 Position the roller 117 rolling roller 119 fixed shaft 121 engaging protrusion 123 engaging recess

Claims (3)

A state in which an endless conveyor chain in which a large number of chain unit members are flexibly connected is supported on the support surface of the main body frame, and is provided at a drive rotating body provided at one end and at the other end. In the chain conveyor over the driven rotor,
Chain unit member is
An outer link plate that hangs down at the end in the conveyance orthogonal direction of the mounting plate on which the object to be conveyed is placed, extends toward one side in the conveyance direction, and has a bearing hole at the center, and the other in the conveyance direction A link member that is integrally formed with an inner link plate that is positioned between the outer link plates of other chain unit members that are adjacent to each other and that is formed with a shaft support hole at the center ,
A plurality of rolling rollers disposed between the inner link plates, having an axis in the conveyance orthogonal direction and having a bearing hole formed in the center extending in the conveyance orthogonal direction ;
When the chain unit members are arranged adjacent to each other and the outer link plate and the inner link plate are overlapped with each other, they are rotatably supported in the bearing holes of the rolling roller, and the end portions in the conveyance orthogonal direction are the ends of the inner link plate. And a connecting shaft that is inserted through the shaft support hole and is supported by the bearing hole of the outer link plate ,
Each rolling roller, the axial length in the axial direction by equally dividing the interval between the inner link plate, centered on the bearing hole on each end surface of the conveyance orthogonal direction with the bearing hole is formed in the central portion A caterpillar type chain conveyor in which a connecting protrusion and a connecting recess are formed at diagonal positions, and a plurality of unit rollers are connected in the axial direction by inserting the connecting protrusion into the connecting recess . In claim 1,
A caterpillar-type chain conveyor in which a plurality of conveyor chains supported on a support surface of a main body frame are spanned to respective driving rotating bodies and driven rotating bodies . In claim 1,
A caterpillar type chain conveyor in which a plurality of caterpillar type chain conveyors are arranged in parallel at an appropriate interval in the conveyance orthogonal direction .

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