Conveyor

Abstract

To provide a carrying device that enables space saving.SOLUTION: A carrying device 1 is provided with: a carrying conveyor 10 for carrying an unvulcanized tire T to a vulcanization machine 2; and a phase matching mechanism 12 for adjusting a phase of the unvulcanized tire T to a position corresponding to the vulcanization machine 2 by rotating the unvulcanized tire T carried by the carrying conveyor 10. The carrying conveyor 10 is provided with a pair of carrying belts 14 and 15 spaced apart in a direction orthogonal to a carrying direction, and carrying the unvulcanized tire T on upper surfaces 14a and 15a. The phase matching mechanism 12 is provided with: a rotary table 24 for holding the unvulcanized tire T; and a lifting mechanism 26 arranged between the pair of carrying belts 14 and 15, and for lifting the rotary table 24 between a storage position below the upper surfaces 14a and 15a, and an adjusting position for holding the unvulcanized tire T above the upper surfaces 14a and 15a and adjusting the phase.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a conveying device for conveying an unvulcanized tire to a vulcanizer. [Background technology]

[0002] The manufacturing of tires includes a process of placing an unvulcanized tire in a mold of a vulcanizer and applying pressure and heat. An unvulcanized tire is a tire in an unvulcanized state formed by combining components such as a tread and a sidewall. The green tire and the mold each have a reference point in the circumferential direction. In the above process, the green tire is placed in the mold so that a reference point (phase) in the circumferential direction of the green tire and a reference point (phase) in the circumferential direction of the mold have a predetermined positional relationship. The process of aligning the phase of the unvulcanized tire with the phase of the mold when the unvulcanized tire is placed in the mold is called "phase alignment."

[0003] Phasing, for example, affects tire uniformity, which is one measure of tire quality. For this reason, from the viewpoint of improving tire quality, various methods, including phase alignment, for supplying unvulcanized tires to a vulcanizer have been considered.

[0004] Patent Document 1 discloses a supply method using a phase alignment device that adjusts the phase angle of green tires (unvulcanized tires) stored in a storage device to match a reference point of a vulcanizer. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 5-177637 Summary of the Invention [Problem to be solved by the invention]

[0006] The phase alignment device is disposed immediately before the vulcanizer, for example. In this case, the unvulcanized tire that has been phase-aligned by the phase alignment device is picked up by a loader or the like of the vulcanizer. In addition, a conveying device for conveying unvulcanized tires may be installed to supply unvulcanized tires to the vulcanizer. A plurality of unvulcanized tires are loaded on the conveying device. The conveying device conveys these unvulcanized tires to the vulcanizer one by one while keeping them waiting. The conveying device is used in combination with a phase alignment device.

[0007] Here, when a phase alignment device and a conveying device are combined to form a supply path for unvulcanized tires to a vulcanizer, these are arranged side by side, which poses the problem that the supply path becomes long and occupies a relatively large space.

[0008] The present invention has been made in view of the above circumstances, and has an object to provide a transport device that can save space. [Means for solving the problem]

[0009] The conveying device of the present invention comprises a conveying conveyor that conveys unvulcanized tires to a vulcanizer, and a phase alignment mechanism that adjusts the phase of the unvulcanized tire to a position corresponding to the vulcanizer by rotating the unvulcanized tire conveyed by the conveying conveyor, wherein the conveying conveyor comprises a pair of conveying belts that are spaced apart in a direction perpendicular to the conveying direction and convey the unvulcanized tire on their upper surfaces, and the phase alignment mechanism comprises a rotating table that holds the unvulcanized tire, and a lifting mechanism that is arranged between the pair of conveying belts and raises and lowers the rotating table between a storage position below the upper surface and an adjustment position above the upper surface for holding the unvulcanized tire and adjusting the phase.

[0010] According to the conveying device having the above configuration, the lifting mechanism for lifting and lowering the rotary table between the storage position and the adjustment position is disposed between the pair of conveying belts, so that the phase alignment can be performed on the unvulcanized tires on the conveying belts. Therefore, it is not necessary to combine a separate phase alignment device with the conveying device. Furthermore, since the lifting mechanism is disposed between the pair of conveying belts, the supply path for unvulcanized tires to the vulcanizer can be shortened compared to the case where the conveying device and the phase alignment device are disposed side by side as in the above conventional example, and space can be saved.

[0011] In addition, in the above-mentioned conveying device, the transport conveyor may include a first drive mechanism that drives one of the pair of conveying belts, and a second drive mechanism that drives the other of the pair of conveying belts. In this case, since the pair of conveyor belts are driven by mutually independent mechanisms, such as the first drive mechanism and the second drive mechanism, there is no need to provide a structure for connecting the two drive mechanisms, etc. As a result, the degree of freedom in arranging the lift mechanism between the pair of conveyor belts can be increased.

[0012] In the above-mentioned transport device, the transport conveyor may include an adjustment mechanism that adjusts the gap between the pair of transport belts. In this case, the distance between the pair of conveyor belts can be adjusted in accordance with the size of the unvulcanized tire, making it possible to convey unvulcanized tires of various sizes. Effect of the Invention

[0013] According to the present invention, it is possible to save space. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram illustrating an example of a conveying device for an unvulcanized tire according to an embodiment. [Diagram 2] FIG. 2 is a perspective view of the conveying device. [Diagram 3] FIG. 3 is a plan view of the transport device. [Figure 4] Figure 4 is an enlarged view of the phase alignment mechanism when viewed from the front of the conveying device, where Figure 4(a) shows the rotating table in the stored position when it is lowered, and Figure 4(b) shows the rotating table in the adjustment position when it is raised. [Diagram 5] Figure 5 is a diagram for explaining the operation of the phase alignment mechanism when performing phase alignment at the adjustment position, where Figure 5(a) is a plan view showing the vulcanized tire before phase alignment at the adjustment position, and Figure 5(b) is a plan view showing the unvulcanized tire after phase alignment at the adjustment position. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, preferred embodiments will be described with reference to the drawings. [Overall structure] FIG. 1 is a diagram illustrating an example of a conveying device for an unvulcanized tire according to an embodiment. In FIG. 1, a conveying device 1 has a function of conveying an unvulcanized tire (unvulcanized tire T) from a cart 4 to a vulcanizer 2. The unvulcanized tire T is a tire before vulcanization, which is formed by combining components such as a tread, a sidewall, etc., by a molding machine (not shown).

[0016] In FIG. 1, a dolly 4, a conveying device 1, and a vulcanizer 2 are arranged in the direction indicated by the arrow in FIG. In the following description, as indicated by the arrow in FIG. 1, the direction from the carriage 4 to the vulcanizer 2 is the conveying direction, and the horizontal direction perpendicular to the conveying direction is the width direction.

[0017] The unvulcanized tire T transported by the cart 4 is transferred to the transport device 1 by an operator, a conveyor, or the like. The transport device 1 on which the unvulcanized tire T is loaded transports the unvulcanized tire T from an upstream end to a downstream end in the transport direction along the transport direction. Further, the conveying device 1 has a function of aligning the phase of the unvulcanized tire T in addition to the function of conveying the unvulcanized tire T.

[0018] The unvulcanized tire T transported to the downstream end of the transport device 1 in the transport direction is phase-aligned by a phase-aligning function of the transport device 1, and then picked up by a loader (not shown) of the vulcanizer 2. Thereafter, the unvulcanized tire T is placed in a mold of the vulcanizer 2, where it is pressurized and heated. In this manner, the conveying device 1 constitutes a supply path for supplying the unvulcanized tire T to the vulcanizer 2.

[0019] FIG. 2 shows a perspective view of the transport device 1, and FIG. As shown in FIGS. 2 and 3, the transport device 1 includes a main body frame 8, a transport conveyor 10, and a phase alignment mechanism 12. The transport conveyor 10 has a function of transporting the unvulcanized tire T to the vulcanizer 2, and includes a pair of transport belts 14, 15, a first drive mechanism 16, and a second drive mechanism 18.

[0020] The pair of conveyor belts 14 and 15 are endless belts that rotate in the conveying direction and in the opposite direction. Of the pair of conveyor belts 14 and 15, one conveyor belt 14 is driven by a first drive mechanism 16. The other conveyor belt 15 is driven by a second drive mechanism .

[0021] The first drive mechanism 16 includes a drive pulley 16a arranged upstream in the conveying direction, a driven pulley 16b arranged downstream in the conveying direction, a motor 16c that drives the drive pulley 16a, a guide 16d that supports the conveying belt 14, and a frame 16e on which each part included in the first drive mechanism 16 is mounted. The conveyor belt 14 is stretched between a driving pulley 16a and a driven pulley 16b, so that the conveyor belt 14 extends along the conveying direction. The motor 16c is provided below the drive pulley 16a. The torque of the motor 16c is transmitted to the drive pulley 16a via a sprocket 16f that is rotatable integrally with the drive pulley 16a, and a transmission member 16g such as a chain or a toothed belt that is wound around the sprocket 16f.

[0022] The driving pulley 16a is rotated by the torque of the motor 16c, and can move the conveyor belt 14. At this time, the driven pulley 16b is rotated by the conveyor belt 14 moving. The guide 16d is a long member provided between the driving pulley 16a and the driven pulley 16b, and supports the inner circumferential surface of the conveyor belt 14 from below, thereby forming an upper running path along which the conveyor belt 14 runs. The conveyor belt 14 is driven to run on the upper running path from the upstream side to the downstream side in the conveying direction.

[0023] The frame 16e is a member that extends parallel to the conveying direction and supports the driving pulley 16a, the driven pulley 16b, etc., and is provided on the beams 8a that extend in the main body frame 8 parallel to the width direction. The frame 16e is provided along the main body frame 8 so as to be movable in parallel in the width direction.

[0024] The second drive mechanism 18 includes a drive pulley 18a arranged upstream in the conveying direction, a driven pulley 18b arranged downstream in the conveying direction, a motor 18c that drives the drive pulley 18a, a guide 18d that supports the conveying belt 15, and a frame 18e on which each part included in the second drive mechanism 18 is mounted. The conveyor belt 15 is stretched between a driving pulley 18a and a driven pulley 18b, so that the conveyor belt 15 extends along the conveying direction. The motor 18c is provided below the drive pulley 18a. The torque of the motor 18c is transmitted to the drive pulley 18a via a sprocket 18f that is provided to be rotatable integrally with the drive pulley 18a, and a transmission member 18g such as a chain or a toothed belt that is wound around the sprocket 18f.

[0025] The driving pulley 18a is rotated by the torque of the motor 18c, and can run the conveyor belt 15. At this time, the driven pulley 18b is rotated by the conveyor belt 15 running. The guide 18d is a long member provided between the driving pulley 18a and the driven pulley 18b, and supports the inner circumferential surface of the conveyor belt 15 from below, thereby forming an upper running path along which the conveyor belt 15 runs. The conveyor belt 15 is driven to travel on the upper travel path from the upstream side to the downstream side in the conveying direction.

[0026] The frame 18e is a member that extends parallel to the conveying direction and supports the driving pulley 18a, the driven pulley 18b, etc., and is provided on the beams 8a that extend in the main body frame 8 parallel to the width direction. The frame 18e is provided along the main body frame 8 so as to be movable in parallel in the width direction.

[0027] The first drive mechanism 16 and the second drive mechanism 18 are equipped with motors 16c and 18c that drive the conveyor belts 14 and 15, respectively. Therefore, the first drive mechanism 16 and the second drive mechanism 18 are independent of each other and are not connected to each other by a transmission shaft or the like for transmitting a rotational force to each other.

[0028] The first driving mechanism 16 and the second driving mechanism 18 are provided in parallel to each other along the conveying direction. Therefore, the pair of conveyor belts 14, 15 are spaced apart from each other in a direction perpendicular to the conveying direction. The unvulcanized tire T is loaded on the upper surfaces 14a, 15a of the conveyor belts 14, 15 traveling on the upper traveling path. The unvulcanized tire T is loaded so as to be stretched across both of the pair of conveyor belts 14, 15. At this time, the unvulcanized tire T is supported by guides 16d, 18d that support the conveyor belts 14, 15. The unvulcanized tires T loaded on the upper surfaces 14a, 15a of the conveyor belts 14, 15 are conveyed from the upstream side to the downstream side in the conveying direction by the conveyor belts 14, 15 running.

[0029] The transport conveyor 10 also includes an adjustment mechanism 20 that adjusts the gap between the pair of transport belts 14, 15. The adjustment mechanism 20 includes a first shaft 20a and a second shaft 20b that connect the frame 16e and the frame 18e. The first shaft 20a and the second shaft 20b are provided along the width direction. Both shafts 20a and 20b are provided to be rotatable about their axes relative to the main body frame 8. The outer circumferential surfaces of both shafts 20a, 20b are provided with male threads that screw into frame 16e and male threads that screw into frame 18e. One of the male threads that screw into frame 16e and the male threads that screw into frame 18e is a positive thread, and the other is a reverse thread. Therefore, when both shafts 20a, 20b are rotated in one direction, frames 16e and 18e move in parallel in the width direction so as to approach each other, and when both shafts 20a, 20b are rotated in the other direction, frames 16e and 18e move in parallel in the width direction so as to move away from each other. In other words, by rotating both shafts 20a, 20b, the distance between frames 16e and 18e can be adjusted, and the distance between the pair of conveyor belts 14, 15 can be adjusted.

[0030] A handle 20d is provided at one end of the first shaft 20a. Sprockets 20a1, 20b1 are provided at the center in the width direction of both shafts 20a, 20b. The two shafts 20a, 20b are configured to be synchronously rotatable by a chain 20c. Therefore, when the handle 20d is rotated, both shafts 20a, 20b can be rotated synchronously, and as a result, the interval between the pair of conveyor belts 14, 15 can be adjusted.

[0031] The phase alignment mechanism 12 is disposed between the first drive mechanism 16 and the second drive mechanism 18 . The phase alignment mechanism 12 has the function of performing "phase alignment" to adjust the phase of the unvulcanized tire T to a position corresponding to the vulcanizer 2 by rotating the unvulcanized tire T transported by the transport conveyor 10 in the horizontal direction. The phase alignment mechanism 12 includes a rotary table 24 and a lifting mechanism 26 . The rotary table 24 includes a rectangular table body 28 and a pair of holders 30 provided on the table body 28 . The table main body 28 is rotatable about a vertical central axis S passing through the center of the table main body 28 by a rotation mechanism (described later) that the rotary table 24 has. An unvulcanized tire T is loaded and held on the upper surface 28a side of the table main body 28 via a holder 30.

[0032] The pair of holders 30 are arc-shaped members centered on a central axis S, and come into contact with the outer circumferential edge of the lower side of the unvulcanized tire T to be loaded, thereby holding the unvulcanized tire T. The pair of holders 30 are formed of MC nylon, which allows the pair of holders 30 to be given an appropriate separation from the unvulcanized tire T. As a result, when the unvulcanized tire T held by the pair of holders 30 is picked up by the loader of the vulcanizer 2, the pair of holders 30 and the unvulcanized tire T can be prevented from coming into strong contact with each other, and the unvulcanized tire T can be picked up appropriately. The pair of holders 30 are provided on the table main body 28 via linear guides or the like, and can be moved in the radial direction by manual operation or by an actuator or the like. Therefore, by adjusting the positions of the pair of holding bodies 30 in accordance with the outer diameter of the unvulcanized tire T, a plurality of types of unvulcanized tires T having different outer diameters can be appropriately held by the pair of holding bodies 30.

[0033] The lifting mechanism 26 has a function of lifting the rotary table 24 up and down. Fig. 4 is an enlarged view of the phase alignment mechanism 12 when viewed from the front of the conveying device 1, Fig. 4(a) shows a state in which the turntable 24 is lowered, and Fig. 4(b) shows a state in which the turntable 24 is raised. Note that, for ease of understanding, members constituting the second drive mechanism 18, such as the driven pulley 18b, are omitted in Fig. 4(a) and Fig. 4(b).

[0034] The rotary table 24 has a rotation mechanism 32 below the table body 28. The rotation mechanism 32 includes a support frame 32a that supports the table body 28, and a motor 32b that is provided on the support frame 32a and drives the table body 28 to rotate.

[0035] As shown in Fig. 4(b), the lifting mechanism 26 includes a lifting table 26a, a base 26b, and a link mechanism 26c. The base 26b is fixed to the main body frame 8. The lifting table 26a is connected to the base 26b via the link mechanism 26c. The link mechanism 26c can raise and lower the lifting table 26a in the vertical direction by an actuator (not shown). The rotating table 24 is fixed to the upper surface of the lifting table 26a. The lifting mechanism 26 can raise and lower the rotary table 24 in the vertical direction relative to the main body frame 8 by raising and lowering the lifting table 26a. The lifting mechanism 26 lifts and lowers the turntable 24 between a storage position that is lower than the upper surface 14a (15a) of the conveyor belt 14 (15) and an adjustment position that is higher than the upper surfaces 14a, 15a. FIG. 4(a) shows the rotary table 24 in the retracted position. In the storage position, the rotary table 24 is disposed between the conveyor belts 14 and 15 as shown in FIGS. 2 and 3, the position of the table body 28 in the rotation direction about the central axis S is adjusted so that the long side is parallel to the conveying direction. This allows the distance between the first driving mechanism 16 and the second driving mechanism 18 to be narrower than the long side of the table body 28, thereby increasing the degree of freedom in the outer diameter of the conveyable unvulcanized tire T.

[0036] FIG. 4(b) shows a state in which the rotary table 24 is located at the adjustment position. The rotary table 24 positioned at the adjustment position holds an unvulcanized tire T. The green tire T held on the rotary table 24 is phase-aligned at the adjustment position. That is, the adjustment position is a position for adjusting the phase of the green tire T.

[0037] The conveying device 1 includes a control device (not shown) that controls the motors 16c and 18c that drive the conveying belts 14 and 15, the motor 32b that rotates the table body 28, and an actuator that raises and lowers the turntable 24. The control device operates the motors 16c and 18c in synchronization with each other and controls each part to realize the operations described below.

[0038] [Operation of the conveying device 1] The conveying device 1 conveys the unvulcanized tire T loaded on the upstream side of the conveying conveyor 10 in the conveying direction to the downstream side of the conveying conveyor 10. At this time, the turntable 24 is controlled to be in the storage position.

[0039] Thereafter, the unvulcanized tire T is transported, and when the unvulcanized tire T reaches a position where the center t1 of the unvulcanized tire T coincides with the central axis S, as shown in FIG. 4(a), the transport device 1 stops the transport conveyor 10 and raises the rotating table 24. The conveying device 1 includes a sensor that detects that the green tire T has reached a position where the center t1 of the green tire T and the central axis S coincide with each other.

[0040] When the rotating table 24 rises from the storage position to the adjustment position, it holds the unvulcanized tire T loaded on the downstream side of the transport conveyor 10 with the table main body 28, and reaches the adjustment position while holding the unvulcanized tire T, as shown in Figure 4(b).

[0041] When the rotary table 24 reaches the adjustment position, the conveying device 1 performs phase alignment of the green tire T. Figure 5 is a diagram for explaining the operation of the phase alignment mechanism 12 when performing phase alignment at the adjustment position, where Figure 5(a) is a plan view showing the unvulcanized tire T before phase alignment at the adjustment position, and Figure 5(b) is a plan view showing the unvulcanized tire T after phase alignment at the adjustment position.

[0042] 5, an identifier 40 is attached to the green tire T. The identifier 40 is a barcode or a QR code (registered trademark), and includes phase information related to the phase alignment of the green tire T. The identifier 40 may be a sticker on which a barcode or the like is printed, or the barcode or the like may be printed directly on the green tire T.

[0043] The transport device 1 includes a detection means (not shown) for reading and detecting the identifier 40. First, the conveying device 1 raises the turntable 24 holding the unvulcanized tire T to an adjustment position, and then reads the phase information included in the identifier 40 by the detection means. That is, the conveying device 1 reads the phase information of the identifier 40 in the state shown in FIG. 5(a). Next, as shown in FIG. 5(b), the conveying device 1 controls the motor 32b (FIG. 4) based on the phase information to rotate the table body 28 so that the phase of the unvulcanized tire T becomes the phase when it is inserted into the mold of the vulcanizer 2. Thereby, the phase alignment mechanism 12 of the conveying device 1 can adjust the phase of the unvulcanized tire T to a position corresponding to the vulcanizer 2.

[0044] The unvulcanized tire T that has been phase-aligned by the phase alignment mechanism 12 is picked up by a loader of the vulcanizer 2 and inserted into a mold of the vulcanizer 2.

[0045] According to the conveying device 1 having the above configuration, since the phase alignment mechanism 12 is provided, it is not necessary to configure a supply path for the unvulcanized tire T to the vulcanizer 2 in combination with a phase alignment device as in the above conventional example. Furthermore, since the lifting mechanism 26 for raising and lowering the rotating table 24 is disposed between the conveying belts 14, 15, the supply path for the unvulcanized tire T to the vulcanizer 2 can be shortened, making it possible to save space, compared to the case in which the conveying device and the phase alignment device are disposed side by side as in the conventional example described above.

[0046] In addition, in this embodiment, the conveyor belts 14, 15 are driven by mutually independent mechanisms, such as the first drive mechanism 16 and the second drive mechanism 18, so there is no need to arrange a configuration for connecting the conveyor belts 14, 15 and the two drive mechanisms 16, 18. For example, as shown in FIG. 3, since there is no structure connecting driven pulley 16b and driven pulley 18b, lifting mechanism 26 can be disposed between driven pulley 16b and driven pulley 18b, and lifting mechanism 26 can be disposed as close as possible to the downstream side in the conveying direction. In this manner, in this embodiment, the degree of freedom in arranging the lifting mechanism 26 between the conveyor belts 14 and 15 can be increased.

[0047] In addition, the conveying device 1 of this embodiment is equipped with an adjustment mechanism 20 that adjusts the distance between the conveying belts 14, 15, so that the distance between the conveying belts 14, 15 can be adjusted according to the size of the unvulcanized tire T, making it possible to transport unvulcanized tires T of various sizes. Furthermore, as described above, the pair of holders 30 of the rotating table 24 can be adjusted in position along the radial direction, so that unvulcanized tires T of various sizes transported by the transport conveyor 10 can be properly held and phase-aligned.

[0048] 〔others〕 It should be noted that the embodiments disclosed herein are illustrative in all respects and are not restrictive. In the above embodiment, an example was given of the lifting mechanism 26 raising and lowering the lifting table 26a and the rotating table 24 using the link mechanism 26c, but the lifting table 26a and the rotating table 24 may also be raised and lowered by a mechanism other than a link, such as a hydraulic cylinder that expands and contracts in the vertical direction.

[0049] The scope of the present disclosure is defined by the claims, rather than the above meaning, and is intended to include all modifications having a meaning equivalent to the claims and within the scope thereof. [Explanation of symbols]

[0050] 1. Conveyor device 2. Vulcanizer 4 Carts 8 Main Frame 8a beam 10. Transport Conveyor 12 Phase alignment mechanism 14 Conveyor belt 14a Top side 15 Conveyor belt 15a Top side 16 First drive mechanism 16a Drive pulley 16b Driven pulley 16c motor 16d Guide 16e Frame 16f sprocket 16g Transmission parts 18 Second drive mechanism 18a Drive pulley 18b Driven pulley 18c motor 18d Guide 18e Frame 18f sprocket 18g Transmission parts 20 Adjustment mechanism 20a 1st shaft 20a1 sprocket 20b Second shaft 20b1 sprocket 20c chain 20d Handle 24 Rotating Table 26 Lifting mechanism 26a Lift table 26b Base 26c Link mechanism 28 Table body 28a Top side 30 Holding body 32 Rotation mechanism 32a Support frame 32b Motor 40 Identifiers S center axis T Uncured tires t1 center

Claims

1. A conveyor for conveying unvulcanized tires to a vulcanizer; a phase alignment mechanism that adjusts a phase of the unvulcanized tire to a position corresponding to the vulcanizer by rotating the unvulcanized tire transported by the transport conveyor, The transport conveyor includes a pair of transport belts that are spaced apart in a direction perpendicular to the transport direction and transport the unvulcanized tire on their upper surfaces, The phase alignment mechanism includes: A rotary table for holding the unvulcanized tire; a lifting mechanism disposed between the pair of conveyor belts and configured to lift the rotary table between a storage position below the upper surface and an adjustment position above the upper surface for holding the unvulcanized tire and adjusting the phase, The rotary table has a rectangular shape, the dimension of the long side of the rotary table is greater than the distance between the pair of conveyor belts, The long side of the turntable in the storage position is parallel to the conveying direction. Conveying device.

2. The transport conveyor is a first drive mechanism that drives one of the pair of conveyor belts; a second drive mechanism for driving the other of the pair of conveyor belts, The conveying device according to claim 1 .

3. The transport conveyor includes an adjustment mechanism for adjusting the gap between the pair of transport belts. The conveying device according to claim 2 .

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