JP6741450B2 - Curve belt conveyor - Google Patents

Description

The present invention relates to a curved belt conveyor, and more particularly to a drive mechanism for driving and rotating an endless curved belt.

As a driving method of an endless curve belt in a curve belt conveyor, as described in Patent Document 1 below, a forward path side (upper side) on the inner peripheral side of the endless curve belt wound around a plane arc shape frame It is known that a drive rotating member is arranged between the return path side (lower side), and a driven rotating member is arranged on each of the outer peripheral surface on the forward path side and the outer peripheral surface on the return path side of the endless curved belt.

The driven rotary member is arranged so as to be divided into a forward path side and a return path side with a center line extending radially from the arc center of the endless curved belt as a boundary, and each of the driven rotary members is a part of the driven rotary member. It is configured to be reversible by 180° about the axis of the pulley on the center line side, and by reversing 180°, the position of the driven rotation member is switched between the positive side and the reverse side.

That is, when the rotation of the drive rotation member is switched between forward and reverse, the position of the driven rotation member is switched between the positive side and the reverse side, so that the positional relationship of the driven rotation member with respect to the drive rotation member during forward rotation and reverse rotation is changed. Therefore, the force for urging the endless curved belt outward in the radial direction is similarly generated in both forward and reverse rotations, and stable traveling can be ensured.

JP-A-2007-106595 (0037, see FIG. 10)

However, in the related art of Patent Document 1, when the position of the driven rotary member is switched between the positive side and the reverse side, after temporarily stopping the rotation of the drive rotary member, the support member that axially supports the driven rotary member is removed. In addition, since it is necessary to reverse the driven rotary member by 180° and attach the support member again to the driven rotary member in the inverted state, the efficiency of the forward/reverse switching work of the conveying direction of the curved belt conveyor is required. Therefore, the efficiency of this forward/reverse switching work has been desired to be improved.

In order to solve such a problem, the present invention employs the following means.

While forming an endless track, an endless curved belt of a plane arc shape that constitutes a conveyance path of a plane arc shape, and while intersecting each other along the radial direction from the arc center of the curve belt, an upstream side and a downstream side are arranged so as to wind the roller, the arc center has a track perpendicular to the through line extending from the curved outer peripheral surface of the belt-side forward side and backward of The forward path surface and the return path surface such that the forward path surface and the return path surface are moved toward and away from the forward path surface and the return path surface, respectively. And an upstream contact surface portion and a downstream surface side that contact the upstream surface side of the curve belt with the meridian as a boundary with the approaching of the forward path side rotary body and the return path side rotary body to the curve belt. Has a downstream contact surface portion that contacts with the forward path side rotary body and the return path side rotary body, and has an endless track in the same direction as the forward path side rotary body and the return path side rotary body. With respect to the curve belt, the inner peripheral side rotating body is arranged so as to face each other in the thickness direction of the curve belt, the forward path side rotating body and the return path side rotating body contact the upstream side contact surface portion to the curve belt. The downstream side contact surface portion is separated from the downstream side contact surface portion, and the downstream side contact surface portion is supported so as to be in contact with the separated upstream side contact surface portion. It is a conveyor.

It is a front view of the curve belt conveyor of one embodiment concerning the present invention, and shows the state where the curve belt is rotated normally. It is a top view of FIG. It is a side view of FIG. It is an enlarged view of FIG. FIG. 5 is a sectional view taken along line (5)-(5) of FIG. 2. FIG. 4 shows a state in which the curve belt is rotated in the reverse direction. FIG. 5 shows a state in which the curve belt is rotated in the reverse direction. It is the (8)-(8) sectional view taken on the line of FIG. It is the (9)-(9) sectional view taken on the line of FIG. It is the (10)-(10) sectional view taken on the line of FIG. It is a principal part front view which shows the other example of a switching mechanism, and shows the state which is making the curve belt rotate normally. FIG. 11 shows a state in which the curve belt is rotated in the reverse direction. It is the (13)-(13) sectional view taken on the line of FIG. It is a principal part front view which shows the other example of a switching mechanism, and shows the state which is making the curve belt rotate normally. FIG. 14 shows a state in which the curve belt is rotated in the reverse direction.

Hereinafter, a curved belt conveyor A according to an embodiment of the present invention will be described with reference to FIGS. 1 to 10.

Since the basic structure of the curved belt conveyor A is the same as that described in Patent Document 1 described above, an outline of the basic structure will be described. As shown in FIG. 2, as shown in FIG. The endless curved belt 3 having a planar arc shape is wound around the rollers 2 and 2 rotatably installed on both sides in the circumferential direction of the support frame 1′ having the above-mentioned structure to form an endless track. The upper surface on the outer peripheral side is used as the transport path A1.

In addition, as shown in FIGS. 1 to 3, an endless drive rotating body (inner peripheral side rotating body) 4a arranged on the inner peripheral side of the curve belt 3 and an outward path surface 3a side of the outer peripheral side of the curve belt 3 And the endless forward swing-side rotating body (outward-side rotating body) 4b, the return-side swinging rotating body (return-side rotating body) 4c, and the drive rotating body 4a, which are arranged on the return-side surface 3b side, respectively. A drive mechanism 5 is provided, and the forward rotation surface 4a and the outward-side swinging rotation body 4b sandwich the outward travel surface 3a side (upper surface, transport path B side) of the curve belt 3 to drive the rotational drive body. The curve belt 3 is rotated by the rotation of the drive rotor 4a by the drive mechanism 5 by sandwiching the return path surface 3b side (lower surface) of the curve belt 3 between 4a and the return path swinging rotor 4c. You can do it.

As shown in FIGS. 2 and 3, the driving rotary body 4a, the forward-side swinging rotary body 4b, and the return-side swinging rotary body 4c are arranged in the up-down direction (in the curve belt 3 direction) toward the radially outer edge of the curve belt 3. A center line (meridian line) CL that is opposed to each other in the thickness direction) and that passes through the center portion of the curved belt 3 along the radial direction from the arc center O in the conveyance direction (the direction of the white arrow in FIG. 2). It is arranged in a direction orthogonal to each other.

In addition, as shown in FIG. 2, the driving rotary body 4a, the outward-side swinging rotary body 4b, and the return-side swinging rotary body 4c are centered with the central portion in the rotational orbit direction being located on the center line CL. It is arranged so as to straddle the line CL.

The arrangement configuration of the driving rotor 4a, the outward-side swinging rotor 4b, and the returning-side swinging rotor 4c is the same as that of the driving rotor 4a, the outward-side swinging rotor 4b, and the returning-side swinging rotor 4c. The center portion may be located on a meridian (not shown) that is circumferentially displaced from the center line CL so as to straddle this meridian, as long as it does not interfere with the rotation of the curve belt 3. Optional.

The axes of the rollers 2 and 2 are arranged at an opening angle of 90° in a plan view, and the arc center O of the curve belt 3 is set at a position where the axes of the rollers 2 and 2 intersect.

As shown in FIG. 2, the curve belt 3 has a plane fan-shaped arc shape having an opening angle of 90° in plan view, and by being wound around the rollers 2 and 2, the curve belt 3 has a plane arc shape and a conveyance direction. Forms a conveying path for changing the direction of the sheet at a right angle. The opening angle of the curve belt 3 is not limited to the right angle.

The features of the curved belt conveyor 3 according to the present invention will be specifically described below with reference to FIGS. 4 to 10. In the following description, the upstream surface side (the right side in FIGS. 1, 2, 5, and 7) of the outward path surface 3a of the curve belt 3 with the center line CL as the boundary is the upstream outward path surface portion 30a and the downstream side (FIG. 1, 2, 5 and 7 is the downstream forward path surface portion 31a, and the upstream side of the return path surface 3b (left side in FIGS. 1, 2 and 5) is the upstream return path surface portion 30b and the downstream surface side (FIG. 1). , FIG. 5, FIG. 7, and FIG. 7 are referred to as the downstream return path surface portion 31b.

The driving rotating body 4a includes two pulleys 40a and 41a that are axially supported at one end side and the other end side in the rotation orbit direction, an endless belt 42a wound around the pulleys 40a and 41a, and a pulley 41a. The drive mechanism 5 connected to the drive mechanism 5 is rotated, and the belt 42a is rotated by rotating the pulley 41a by the drive of the drive mechanism 5.

The outward path swinging rotating body 4b arranged on the outward path surface 3a has an axis located on the center line CL with respect to the frame 1, and a stationary pulley (immovable axis) which is rotatably supported with this position as a fixed position. (Rotating body) 40b and immovable pulley 40b as central portions, which are pivotally supported on the upstream outward path surface portion 30a side and the downstream outward path surface portion 31a side, and rotate forward and backward around the stationary pulley 40b about the axis of the stationary pulley 40b. The movable pulleys (movable rotating bodies) 41b and 42b are provided so as to be movable, and the endless belt 43b wound around the stationary pulley 40b and the movable pulleys 41b and 42b.

The immovable pulley 40b is rotatably supported on a rotating shaft 44b that penetrates on the center line CL of the curve belt 3 from the outside of the frame 1 so as to rotate coaxially, and the forward-side swinging rotating body. 4b is brought into contact with the curve belt 3, and the forward rotation surface 4a and the driving rotation body 4a arranged on the inner peripheral side of the curve belt 3 move the forward movement surface 3a on the center line CL of the curve belt 3. It is pivotally supported at the position where it is clamped.

As shown in FIGS. 8 to 10, the movable pulleys 41b and 42b are connected by a connecting plate 45b provided so as to extend over the movable pulleys 41b and 42b, and are pivotally supported by the connecting plate 45b. The plate 45b causes the movable pulley 42b to interlock with the pivoting movement of the movable pulley 41b to pivot.

As shown in FIGS. 5 and 7, the stationary pulley 40b and the movable pulleys 41b and 42b are arranged such that the forward-side swinging rotating body 4b has an isosceles triangle whose apex is the stationary pulley 40b. ing.

In the following description, the surface of the wound belt 43b extending from the immovable pulley 40b to the upstream movable pulley 41b (the surface on the right side in FIGS. 5 and 7) is swung by the movable pulleys 41b and 42b to move the upstream forward path. An upstream contact surface portion 46b that comes into contact with and separates from the surface portion 30a is used, and a surface (a surface on the left side in FIGS. 5 and 7) extending from the stationary pulley 40b to the downstream movable pulley 42b is moved to the downstream side by the turning operation of the movable pulleys 41b and 42b. The downstream contact surface portion 47b comes in contact with and separates from the outward path surface portion 31a.

As shown in FIGS. 9 and 10, the connecting plate 45b is fixed to a rotary shaft 44b that is rotatably penetrated through the frame 1, and is configured to rotate integrally with the rotary shaft 44b.

As shown in FIG. 5, when the movable pulley 41b turns in the direction in which the movable pulley 41b separates from the upstream forward path surface portion 30a, the movable pulley 42b moves in conjunction with the turning and the movable pulley 42b moves toward the downstream forward path surface portion. When the movable pulley 41b turns in a direction approaching the upstream outward path surface portion 30a as shown in FIG. 7, the movable pulley 42b moves in conjunction with this turning and the movable pulley 42b moves in the downstream outward path surface portion 31a. By turning in a direction away from the stationary pulley 40b, the stationary pulley 40b is alternately swung between the upstream side and the downstream side.

Then, as shown in FIG. 5, when the movable pulley 42b is approaching the downstream side outward path surface portion 31a, the downstream side contact surface portion 47b contacts the downstream side outward path surface portion 31a, and the upstream side contact surface portion 46b is in the upstream side outward path. It is separated from the surface portion 31a, so that the downstream side contact surface portion 47b and the belt 42a sandwich the downstream side outward passage surface portion 31a.

Further, as shown in FIG. 7, when the movable pulley 41b is approaching the upstream outward path surface portion 30a, the upstream side contact surface portion 46b contacts the upstream side outward path surface portion 30a and the downstream side contact surface portion 47b. It is separated from the surface portion 31a, so that the upstream side contact surface portion 46b and the belt 42a sandwich the upstream side outward passage surface portion 30a.

The return-path-side swinging rotary body 4c arranged on the return-path surface 3b has the same configuration as the forward-path-side swinging rotary body 4b, and is formed to be an isosceles triangle that is symmetrical in the vertical direction. That is, with respect to the frame 1, the shaft is positioned at the center line CL, and the stationary pulley (immobile rotor) 40c rotatably supported with this position as a fixed position and the stationary pulley 40c as the central portion are provided upstream. Movable pulleys (movable rotating bodies) 41c, 42c that are pivotally supported by the side return path surface portion 30b side and the downstream side return path surface portion 31b side and are provided so as to be able to rotate forward and backward around the stationary pulley 40c about the axis of the stationary pulley 40c. And an endless belt 43c wound around the stationary pulley 40c and the movable pulleys 41c and 42c.

As shown in FIG. 8, the immovable pulley 40c is rotatably supported by a rotary shaft 44c that is pierced so as to rotate coaxially from the outside of the frame 1 and curves the homeward swinging rotary body 4c. While being brought into contact with the belt 3, the homeward side swinging rotary body 4c and the drive rotary body 4a arranged on the inner peripheral side of the curve belt 3 are pivotally supported at a position to sandwich the homeward side of the curve belt 3. ..

As shown in FIGS. 8 to 10, the movable pulleys 41c and 42c are connected by a connecting plate 45c provided so as to extend over the movable pulleys 41c and 42c, and are pivotally supported by the connecting plate 45c. The plate 45c allows the movable pulley 41c and the movable pulley 42c to interlock with each other to perform a turning operation.

In the following description, the surface of the belt 43c (the surface on the left side in FIG. 5) extending from the immovable pulley 40c of the wound belt 43c to the upstream movable pulley 41c is swung by the movable pulleys 41c and 42c to return to the upstream return path. The surface of the belt 43c extending from the stationary pulley 40c to the downstream movable pulley 42c (the surface on the right side in FIG. 7) is defined as the upstream contact surface portion 46c that comes into contact with and separates from the surface portion 30b. The downstream contact surface portion 47b comes in contact with and separates from the return path surface portion 31b.

As shown in FIG. 10, the connecting plate 45c is fixed to a rotary shaft 44c that is rotatably penetrated through the frame 1, and is configured to rotate integrally with the rotary shaft 44c.

As shown in FIG. 5, when the movable pulley 41c turns in the direction in which the movable pulley 41c separates from the upstream return path surface portion 30b, the movable pulley 42c interlocks with this rotation and the downstream return path surface portion moves. When the movable pulley 41c turns in a direction approaching the upstream return path surface portion 30b, as shown in FIG. 7, the movable pulley 42c moves in conjunction with the turning, and the movable pulley 42c turns downstream. By rotating in a direction away from the stationary pulley 40c, the stationary pulley 40c is alternately swung between the upstream side and the downstream side.

Then, as shown in FIG. 5, when the movable pulley 41c is separated from the upstream return path surface portion 30b, the downstream contact surface portion 47b contacts the downstream return path surface portion 31a, and the upstream contact surface portion 46c moves toward the upstream return path portion. It is separated from the surface portion 30b, so that the downstream side return surface portion 31b is sandwiched between the downstream side contact surface portion 47b and the belt 42a.

Further, as shown in FIG. 7, when the movable pulley 41c is approaching the upstream return path surface portion 30b, the upstream contact surface portion 46c is in contact with the upstream return path surface portion 30b, and the downstream contact surface portion 47b is downstream. It is separated from the side return path surface portion 31a, so that the upstream side return path surface portion 30b is sandwiched between the upstream side contact surface portion 46c and the belt 42a.

Incidentally, the belts 42a, 43b, 43c are provided with a large number of blocks C in which magnets are embedded over the entire circumference on the outer peripheral side, and the magnetic force of the blocks C is utilized to connect the belt 42a of the drive rotor 4a to the belt 42a. The curve belt 3 is more reliably clamped by the belts 43b and 43c of the outward swinging rotary body 4b and the backward swinging rotary body 4c.

As shown in FIGS. 4, 6, 8, and 9, the forward path swinging rotary body 4b and the return path swinging rotary body 4c are linked to each other via a switching mechanism B and swing in the same direction. It is located in.

The switching mechanism B extends over the above-mentioned rotating shafts 44b and 44c so as to extend over the sprockets B1 and B2 and the sprockets (rotating bodies) B1 and B2 which are coaxially supported by the rotating shafts 44b and 44c so as to rotate integrally therewith. An air cylinder (turning force imparting device) that applies a force in the direction of turning the movable pulley 41b so as to extend over the chain (annular body) B3 wound around the frame B and the connecting plate 45b of the frame 1 and the forward swinging rotating body 4b. ) B4 and.

The air cylinder B4 is arranged on the outside of the frame 1, and the cylinder rod B41 is arranged between the fixed pulley 40b and the movable pulley 41b and on the movable pulley 41b side with respect to the connecting body 45b of the outward swinging rotating body 4b. I support it.

The air cylinder B4 is arranged outside the frame 1, and the tip of the cylinder rod B41 is axially attached to the connecting plate 45b through the long hole 10 provided in the frame 1.

As shown in FIGS. 4 and 5, such a switching mechanism B causes the movable pulley 41b to swivel in a direction away from the upstream outward path surface portion 30a by the extension of the air cylinder B4, and along with this swivel, the outward path The oscillating rotator 4b oscillates in a direction in which the downstream contact surface portion 47b is brought into contact with the downstream outward path surface portion 31a.

At this time, the rotation of the connecting plate 45b accompanying the swinging of the outward-side swinging rotating body 4b causes the rotating shaft 44b integrated with the connecting plate 45b to rotate and the sprocket B1 to rotate, and the rotation of the sprocket B1 is changed to the chain B3. It is possible to rotate the sprocket B2 in the same direction as the sprocket B1 by transmitting the sprocket B2 to the sprocket B2 via the sprocket B2, and the rotation shaft 44c rotates integrally with the sprocket B2 as the sprocket B2 rotates. The connecting plate 45c can be rotated integrally with the connecting plate 45c, and the return path side swinging rotating body 4c can be swung with the rotation of the connecting plate 45c.

Further, as shown in FIGS. 6 and 7, by contracting the air cylinder B4, the outward-side swinging rotary body 4b is swung in the direction opposite to the swinging direction shown in FIGS. By transmitting the rotation of the rotating shaft 44b that rotates with the movement to the rotating shaft 44c via the switching mechanism B, as in the case of the above-described rotation transmission, the return path side swinging rotating body 4c can be moved to the position shown in FIGS. It can be swung in the direction opposite to the swing direction shown in.

11 to 13 show another example of the switching mechanism B. In the switching mechanism B′, instead of the air cylinder B4, a knob bolt (turning force imparting device) B6 is used to manually swing the forward swinging rotary body 4b and the backward swinging rotary body 4c. It is a thing. It should be noted that the description of the portions overlapping with the switching mechanism B will be omitted by giving the same reference numerals.

The knob bolt B6 is integrated with the connecting plate 45b side by penetrating the bolt B60 from the outside of the frame 1 into the elongated hole 10 and screwing the bolt B60 into the connecting plate 45b side by the rotation of the knob portion B61. By moving B6 up and down along the longitudinal direction of the elongated hole 10, the outward-side swinging rotating body 4b can be swung.

The configuration in which the swing of the outward swinging rotary body 4b is transmitted as the swing of the backward swinging rotary body 4c is similar to that of the switching mechanism B.

In such a knob bolt B6, the bolt B60 is further screwed to the connecting plate 45b side to bring the knob portion 61 into contact with the outer peripheral surface of the frame 1 around the elongated hole 10, and the outward swinging rotation is generated by the frictional force due to this contact. The body 4b can hold the swinging position, the bolt B60 is loosened by the rotation of the knob portion B61, and the contact frictional force of the knob portion B61 with respect to the outer peripheral surface of the frame 1 is weakened. The body 4b can be made swingable.

14 and 15 show another example of the switching mechanism B. As described above, the switching mechanism B″ is replaced with the sprockets B1 and B2 that are coaxially supported by the rotation shafts 44b and 44c so as to rotate integrally with each other, and the chain B3 that is wound around the sprockets B1 and B2. The link shafts B7 and B8 are rotatably supported by the shafts that are parallel to the shafts of the immovable pulleys 40b and 40c, and the link plate B9 is rotatably supported over the link shafts B7 and B8. It should be noted that the description of the portions overlapping with the switching mechanism B will be omitted by giving the same reference numerals.

The link plate B9 is rotatably supported around a center portion between the immovable pulleys 40b and 40c and on the center line CL about an axis parallel to the axes of the link shafts B7 and B8, and the link shaft B7. , B8 are formed to have elongated holes B70 and B71.

In the switching mechanism B″ of this embodiment, the air cylinder B4 and the knob bolt B6 are connected to the link plate B9 (not shown), and the expansion/contraction movement of the air cylinder B4 and the manual rotation operation of the knob bolt B6 are directly performed on the link plate B9. The link plate B9 is operated to rotate (the direction indicated by the arrow in FIGS. 14 and 15).

That is, also by the switching mechanism B″, the swing of the forward swinging rotary body 4b and the swing of the backward swinging rotary body 4c can be linked.

Next, the operation of the above-configured curve belt conveyor A will be described. FIG. 5 shows a state in which the curve belt 3 is normally rotated (shown by an outline arrow), and FIG. The state (indicated by an outline arrow) is shown.

When the outward path swinging rotary body 4b and the backward path swinging rotary body 4c are in the state shown in FIG. 5, as described above, only the downstream-side forward path surface portion 31a within the forward path direction range of the forward path surface 3a of the curve belt 3 is provided. Is sandwiched between the downstream contact surface portion 47b and the belt 42a, and only the downstream forward path surface portion 30b is sandwiched between the downstream contact surface portion 46c and the belt 42a within the range of the return path surface 3b of the curved belt 3 in the return path direction. Therefore, when the drive rotator 4a is rotated in the arrow direction (direction in which the curve belt is normally rotated), the curve belt 3 can be stably rotated in the positive direction.

When the outward path swinging rotary body 4b and the return path swinging rotary body 4c are in the state shown in FIG. 7, as described above, only the upstream outgoing path surface portion 30a of the outward path surface 3a of the curve belt 3 in the outward path direction is included. Is clamped between the upstream contact surface portion 46b and the belt 42a, and only the upstream return path portion 30b is clamped between the upstream contact surface portion 46c and the belt 42a within the range of the return path surface 3b of the curved belt 3 in the return path direction. Therefore, when the drive rotor 4a is rotated in the direction of the arrow (the direction in which the curve belt is rotated in the reverse direction), the curve belt 3 is stably rotated in the reverse direction in the same manner as the normal rotation of the curve belt 3 shown in FIG. Can be made.

Then, the forward-direction swinging rotary body 4b and the backward-path swinging rotary body 4c simultaneously swing in conjunction with each other by the operation of the switching mechanism B (switching mechanism B′) described above. Switching to the reverse rotation state of FIG. 7 can be performed quickly, which can improve the efficiency of the forward/reverse switching operation of the conveyance direction of the curved belt conveyor.

It should be noted that the present invention is not limited to the illustrated embodiments, and can be implemented with a configuration that does not deviate from the contents described in each item of the claims.

For example, the pivotal support position of the cylinder rod B41 of the air cylinder B4 with respect to the connecting plate 45b and the screwing position of the knob bolt B6 with respect to the connecting plate 45b side in the switching mechanisms B, B′, B″ are not limited to the exemplified positions. It may be between the stationary pulley 40b and the movable pulley 42b in the outward swinging rotary body 4b, or between the stationary pulley 40c and the movable pulley 41c of the connecting plate 45c in the backward swinging rotary body 4c, or the movable pulley 42c. It may be between and. Furthermore, it is not limited to between the stationary pulleys 40b and 40c and the movable pulleys 41b, 42b, 41c and 42c.

Further, the switching mechanism B is not limited to the form including the sprockets B1 and B2 and the chain B3, but may be a form including a pulley and a belt (not shown).

Further, the switching mechanisms B, B′, and B″ are not limited to the air cylinder B4 and the knob bolt B6, and can swing the forward path swinging rotary body 4b and the backward path swinging rotary body 4c, and can also move forward. The oscillating rotary member 4b and the return-path-side oscillating rotary member 4c are only required to be able to hold the state after the oscillating motion.

Further, the switching mechanisms B, B′, B″ are provided with an air cylinder B4 and a knob bolt B6 for each of the forward path side swinging rotary body 4b and the backward path side swinging rotary body 4c, and the forward path side swinging rotary body is provided. 4b and the homeward rocking rotary member 4c may be rocked by the air cylinder B4 and the knob bolt B6 provided to each other. In this case, the sprockets B1 and B2, the chain B3, the link shafts B7 and B8, and the link plate B9 can be omitted.

A: Curved belt conveyor 2: Roller 3: Curved belt 3a: Forward path surface 3b: Return path surface CL: Center line O: Arc center 4a: Driving rotary body 4b: Forward path side swinging rotary body 4c: Return path side swinging rotary body B : Switching mechanism B': Switching mechanism 40b: Immovable pulley 40c: Immovable pulley 41b: Movable pulley 42b: Movable pulley 43b: Belt 41c: Movable pulley 42c: Movable pulley 43c: Belt 44b: Rotating shaft 44c: Rotating shaft B1: Sprocket B2 : Sprocket B3: Chain B4: Air cylinder B6: Knob bolt

Claims (4)

While forming an endless track, an endless curved belt of a plane arc shape that constitutes a conveyance path of a plane arc shape, intersects each other along the radial direction from the arc center of the curve belt, and A roller arranged so as to wind the upstream side and the downstream side,
Has a track perpendicular to the through line extending from the arc center, the curve belt forward surface of the outer peripheral surface side and between the backward path side, - close to the the recovery road surface and the forward surface A forward-path side rotating body and a returning-path side rotating body, which are supported so as to be separated from each other,
An upstream surface of the curve belt with the meridian as a boundary along with the approach to the curve belt of the forward path side rotary body and the backward path side rotary body, which are respectively provided in the forward path side rotary body and the return path side rotary body. An upstream contact surface portion that contacts the side and a downstream contact surface portion that contacts the downstream surface side,
It has an endless track in the same direction as the forward path side rotary body and the return path side rotary body, and on the inner peripheral side of the curve belt, the thickness direction of the curve belt with respect to the forward path side rotary body and the return path side rotary body. And an inner peripheral side rotating body arranged so as to face each other,
In the forward path side rotating body and the returning path side rotating body, the downstream side contact surface portion is separated from the contact of the upstream side contact surface portion with the curve belt, and the downstream side is separated from the upstream side contact surface portion. A curved belt conveyor, which is supported so as to be alternately switchable so that the contact surfaces contact each other. The forward path side rotating body and the return path side rotating body each have an immovable rotating body that is rotatably supported at a fixed position with an axis along the meridian and an infinite track direction with the immovable rotating body as a boundary. A movable rotating body, which is rotatably supported around both ends by a shaft parallel to the immobile rotating body and is alternately movable in a direction approaching and separating from the curve belt, An endless belt disposed across the stationary rotor and the movable rotor with a trajectory direction orthogonal to the meridian, and the stationary rotor and the endless track direction within the range of the belt. The upstream contact surface portion between the upstream and the movable rotary body, and the downstream contact surface portion between the stationary rotor and the downstream movable rotary body in the endless track direction, curve belt conveyors according to claim 1. The movable rotating body is connected to the stationary rotating body via a connecting plate which is coaxially and rotatably supported by the stationary rotating body, and is rotatably supported by the connecting plate so as to rotate with the connecting plate. 3. The curve belt conveyor according to claim 2, wherein the curve belt conveyor is configured to approach and separate from the curve belt by rotating around the axis of the stationary rotor. It is characterized by further comprising a switching mechanism that interlocks the forward path side rotating body and the returning path side rotating body to perform an approaching/separating operation of the upstream side contact surface portion and the downstream side contact surface portion with respect to the curve belt. The curved belt conveyor according to any one of claims 1 to 3.

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