Transfer device

Abstract

The present invention provides a transfer device capable of suitably transferring objects such as rod-shaped parts processed by a processing device or rod-shaped raw materials before processing. [Solution] The system includes a chain 31 that rotates in a manner that allows driving force to be transmitted to a roller 23 that supports the lower side of the part, a drive sprocket 33a that engages with the chain 31 and applies driving force output by a motor 32 to the chain 31, a plurality of sprockets 33b to 33d that engage with the chain 31 and rotate due to the driving force applied by the drive sprocket 33a, and a rotation amount detection sensor 43 that can measure the amount of rotation of a specific sprocket (rotation measuring sprocket 33e) among the plurality of sprockets 33b to 33d. The control unit 13 controls the system to move the part based on the amount of rotation of the rotation measuring sprocket 33e measured by the rotation amount detection sensor 43.

Description

Technical Field

[0005] ,

[0001] The present invention relates to a transfer device capable of transferring rod-shaped parts processed by a processing device capable of performing precut processing, materials before processing, and the like.

Background Art

[0002] Conventionally, as a construction method for manufacturing buildings such as houses, a construction method using precut processing is known. For example, rod-shaped parts (products) such as columns and beams are preprocessed into shapes and sizes suitable for each installation location by a precut processing device and then delivered to the construction site. Thereby, the processing of parts at the construction site can be reduced, and buildings can be manufactured efficiently.

[0003] In a precut processing device, a device (transfer device) for transferring (conveying) a rod-shaped wood to an appropriate position is installed at each location such as an input section for inputting unprocessed wood (material), a conveying section for conveying the wood during processing, and an output section for taking out processed wood (parts). As a transfer device, a conveyor of a drive roller type that rotationally drives rollers supporting the lower side of the wood with a chain is known, and a device that determines the transfer amount of the wood from a reference position based on the positions of the front end and the rear end of the wood during transfer with a timer is known. By performing control to rotate the rollers until a time corresponding to the required transfer amount is reached and then stop for a rod-shaped wood, rod-shaped woods having different lengths can be transferred to a stop position where the central positions in the length direction coincide (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, when determining the amount of wood to be transported by a timer, there was a problem in that the amount of wood transported could change due to factors such as slack in the chain that drives the transport rollers, potentially making it impossible to transport the object to the stopping position with a certain level of accuracy over a long period of time. While this problem can be addressed by installing numerous photoelectric sensors or using laser-based measuring devices to improve the accuracy of the stopping position, these configurations could significantly increase the overall cost of the device. Furthermore, this problem could occur not only with wood but also when transporting parts made of other materials, suggesting that there may still be room for improvement in configurations for transporting rod-shaped objects of varying lengths.

[0006] The present invention was made to solve the above-mentioned problems, and aims to provide a transfer device that can suitably transfer objects such as rod-shaped parts processed by a processing device or rod-shaped raw materials before processing. [Means for solving the problem]

[0007] To achieve this objective, the transfer device described in claim 1 is: A transfer device configured to transfer objects such as rod-shaped parts processed by a processing device capable of pre-cutting, or rod-shaped materials before processing, in a predetermined direction, A support portion that supports the lower side of the object to be moved so that it can be moved in the predetermined direction, A circumferential member that can transmit a driving force to the support portion so that the object to be transported can be transported in the predetermined direction, A drive member that engages with the circumferential member and applies the driving force output by the drive source to the circumferential member, A plurality of rotating members that engage with the circumferential member and rotate by the driving force applied by the driving member, A measuring means capable of measuring the amount of rotation of a specific rotating member among the aforementioned rotating members, The device is characterized by comprising control means that controls the transfer target to move to a predetermined position along the predetermined direction based on the amount of rotation of the specific rotating member measured by the measuring means.

[0008] The transfer device described in claim 2 is the transfer device described in claim 1, The rotating member has a plurality of teeth on its outer circumference, The measuring means comprises a sensor capable of detecting the number of spaces formed between adjacent teeth when the specific rotating member rotates. The control means is configured to measure the amount of rotation of the specific rotating member based on the number of spatial portions or the number of teeth detected by the sensor.

[0009] The transfer device according to claim 3 is the transfer device according to claim 1 or 2, The aforementioned specific rotating member is positioned among the plurality of rotating members at a location close to the leading edge in the circumferential direction in which the circumferential member rotates, relative to the drive member.

[0010] Furthermore, the transfer device described in claims 1 to 3 may be configured as a device including a processing device (for example, a pre-cutting device), or as a device that does not include a processing device. [Effects of the Invention]

[0011] According to the transfer device of the present invention, the object to be transferred can be moved to a predetermined position along a predetermined direction based on the amount of rotation of a specific rotating member measured by a measuring means, and the specific rotating member rotates due to a driving force applied via a circumferential member. Therefore, even if there is slack in the circumferential member, the object to be transferred can be easily and accurately transferred to a predetermined position by using the amount of rotation of the rotating member that rotates due to the driving force applied via the circumferential member. Furthermore, the measuring means only needs to be able to measure the amount of rotation of a specific rotating member, and compared to the use of expensive devices using lasers or a large number of photoelectric sensors, it is possible to easily and accurately transfer the object to a predetermined position while keeping costs down. [Brief explanation of the drawing]

[0012] [Figure 1] Schematic diagram showing the configuration of a pre-cutting machine. [Figure 2] (A) is a perspective view showing the configuration of the transfer unit, and (B) is a magnified view showing the area around the rotation amount detection sensor. [Modes for carrying out the invention]

[0013] Embodiments of the present invention will be described below with reference to the accompanying drawings. Figure 1 is a schematic diagram showing the configuration of a pre-cutting apparatus 10 as an example of a transfer device. Figure 2(A) is a perspective view showing the configuration of the transfer section 12, and Figure 2(B) is a magnified view showing the area around the rotation amount detection sensor 43. In Figure 1, the transfer section 12 is shown in plan view, the transfer path of the parts (wood) in the transfer section 12 is shown by a thick dashed line, the transfer direction of the parts is shown by an arrow, the arrangement position of the chain 31 is shown by a thin dashed line, the stopping positions of parts of different lengths are shown as examples for reference, and circles are added to both ends and the center position of each part. In Figure 2(A), the path on which the chain 31 is arranged is shown by a thick dashed line, a part of the support wall 22 is shown by a double dashed line, and the position detection sensor 41 is omitted to make the drive mechanism 30 easier to understand. Furthermore, the sprockets are designated with five different designations, sprockets 33a to 33e, and all sprockets are referred to simply as sprocket 33. However, in the drawings, only some of the sprockets in Figure 2(A) are designated with the designation "33".

[0014] The pre-cutting apparatus 10 comprises a processing unit 11 capable of processing rod-shaped materials, a transfer unit 12 for transferring parts (products) processed by the processing unit 11, and a control unit 13 for controlling the processing unit 11 and the transfer unit 12. The apparatus is capable of cutting rod-shaped materials into parts and transferring the parts to a discharge position by the transfer unit 12. The processing unit 11 includes a processing device capable of cutting wood into parts, and the processing device is controlled by the control unit 13 to perform pre-cutting of columns, horizontal members, etc. The parts manufactured by the pre-cutting process are transferred from the processing unit 11 to the transfer unit 12, and then transferred by the transfer unit 12 to a discharge position that is set in advance as a stopping position.

[0015] As an example of the discharge position, as shown in Figure 1, the center position in the longitudinal direction of rod-shaped parts (wood) of different lengths is used as a reference. The rod-shaped parts are transported in the transport direction (to the left in Figure 1) until they reach the discharge position illustrated at the bottom of Figure 1. Once transported to the discharge position, the rod-shaped parts can be discharged manually by an operator, or they can be transported to another location by a multi-joint robot (not shown) for loading, or their orientation can be changed by a rolling device (not shown).

[0016] The transfer unit 12 is configured as a device capable of transferring a rod-shaped component to a discharge position along the transfer direction based on the amount of rotation of the rotation measuring sprocket 33e measured by the rotation amount detection sensor 43. The transfer unit 12 is composed of a drive roller type conveyor and can be configured with a support member 20, a drive mechanism 30, and sensors 41 to 43. The drive mechanism 30 includes all sprockets 33a to 33e, but in Figure 1, only some of the sprockets are labeled with the reference numeral "30".

[0017] The support member 20 can be composed of a support column 21, a support wall 22, and a roller 23. As shown in Figure 2(A), the support column 21 can be installed so as to stand vertically with respect to the floor surface, and the support wall 22 can be integrated with the upper part of the support column 21 by welding or the like.

[0018] The support walls 22 are installed at a certain interval so that the rollers 23 and sprockets 33 are located in the gap, and can be configured to support the pivot shaft portions of the rollers 23 and sprockets 33 on both sides or one side. Thereby, the rollers 23 and sprockets 33 can rotate, and when the chain 31 is hung on the sprocket 33, the rollers 23 and sprockets 33 are configured to be rotatable by the driving force of the motor 32.

[0019] The roller 23 is a member that constitutes a support portion that supports the lower side of the parts to be transferred so as to be transferable in the transfer direction (left direction in FIG. 1) along the transfer path. The roller 23 is a member that rotates by chain drive, and rotates so as to be able to transfer the parts supported on the upper side in the transfer direction. The roller 23 can be configured by setting the number and interval to be used so as to be able to accommodate parts of different lengths manufactured by precut processing.

[0020] The drive mechanism 30 can be configured to include a chain 31, a motor 32, and a sprocket 33. The chain 31 is a member (circular member) that circulates so as to be able to transmit the driving force of the motor 32 to the roller 23 in order to transfer the rod-shaped parts in a predetermined direction (left in FIG. 1) along the transfer path.

[0021] As shown in FIG. 2(A), the sprocket 33 can be roughly classified into a sprocket (drive sprocket 33a) as a drive member integrated with the output shaft portion of the motor 32, and sprockets (sprockets 33b to 33d) other than the drive sprocket 33a.

[0022] The drive sprocket 33a is a member (drive member) that engages with the chain 31 as a circular member and imparts the driving force output by the motor 32 as a drive source to the chain 31. The sprockets 33b to 33d other than the drive sprocket 33a are a plurality of members (rotating members) that rotate (are driven) by the driving force imparted by the drive sprocket 33a by engaging with the chain 31.

[0023] As shown in Figure 2(A), the sprockets 33b to 33d can be classified into a sprocket integrated with the roller 23 (roller sprocket 33b), a sprocket installed outside the section where the roller sprocket 33b is installed (outer roller sprocket 33c), and a sprocket placed in the space between the rollers 23 (inter-roller sprocket 33d). Note that the placement of the drive sprocket 33a is shown as an example, and the number and placement of the sprockets 33b to 33d other than the drive sprocket 33a are also shown as an example, and other configurations are possible. For example, the drive sprocket 33a may be placed in a different position, or the inter-roller sprocket 33d may be omitted.

[0024] As shown in Figure 1, sensors 41 to 43 can be configured to include a position detection sensor 41 capable of detecting the leading and trailing positions of a part in the transfer section 12, a part detection sensor 42 capable of detecting the presence of a part near the discharge position in the transfer path, and a rotation amount detection sensor 43 capable of detecting the amount of rotation of the rotation measuring sprocket 33e. The position detection sensor 41 and the part detection sensor 42 can be installed so as to be located between adjacent rollers 23, and can be configured, for example, using reflective photoelectric sensors. Figure 1 also illustrates a case where the position detection sensor 41 is installed upstream of the center position of the part transferred to the discharge position, and a case where the part detection sensor 42 is installed at the center position of the part transferred to the discharge position.

[0025] The position detection sensor 41 allows the control unit 13 to detect the precise position of the part in the transfer unit 12. Using this position as a reference position, the motor 32 is operated to rotate the roller 23, thereby transferring the rod-shaped part to the discharge position. While two or more position detection sensors 41 can be installed, it is preferable to use only one. Even with only one sensor, the detection position of that single position detection sensor 41 can be used as a reference position to determine the transfer amount corresponding to the distance to the stopping position, and the deceleration start position just before the stopping position.

[0026] The part detection sensor 42 can detect when a part is located near the discharge position, thereby enabling detection that the part has been discharged from the discharge position. In a situation where a part has already been transferred to the discharge position, the transfer of the next part can be performed on the condition that the discharge of the part is confirmed using the part detection sensor 42.

[0027] The rotation amount detection sensor 43 is configured to measure the rotation amount of a specific sprocket, which is a rotation measuring sprocket 33e, one of the roller outer sprockets 33c. The rotation amount detection sensor 43 can be made up of a reflective photoelectric sensor and can be mounted on the support shaft portion of the rotation measuring sprocket 33e. As shown in Figure 2(B), the rotation amount detection sensor 43 is installed in a position where it can detect the space formed between the teeth on the outer circumference of the rotation measuring sprocket 33e. When the rotation measuring sprocket 33e rotates, different signals can be input to the control unit 13, for example, an ON output when the teeth are in position and an OFF output when the space is in position.

[0028] The number of teeth on the rotation measurement sprocket 33e is set to, for example, 13, and the spacing between adjacent teeth is set to, for example, 21 mm. When the initial state of the rotation amount detection sensor 43 is an off output state that detects a gap, the output switches from off to on when the sprocket rotates to a position where teeth are detected, and switches from on to off when it rotates to a position where the next gap is detected. Therefore, by detecting the number of on-off switches corresponding to the number of teeth in one rotation of the rotation measurement sprocket 33e (for example, 13 times), it is possible to detect that the rotation measurement sprocket 33e has rotated for one full rotation.

[0029] The amount of rotation of the rotation measuring sprocket 33e can be used to measure the amount of parts transported by the rollers 23. The amount of parts transported by the rollers 23 varies depending on the specifications of the roller sprocket 33b and the diameter of the rollers 23, so these numerical values ​​can be set in the control unit 13 as control data necessary for calculating the amount of transport. As a result, when the rotation measuring sprocket 33e rotates, the number of spaces formed between adjacent teeth and the number of teeth can be counted by the control unit 13, and the amount the chain 31 has actually rotated can be measured as an actual value, which can be used to measure the amount of parts transported.

[0030] Furthermore, the measurement of the rotation amount of the rotation measuring sprocket 33e by the rotation amount detection sensor 43 is not limited to counting the space between the teeth, but may be measured by other methods. For example, the rotation measuring sprocket 33e may be provided with measuring protrusions or grooves and their number may be counted, or a measuring rotating body that rotates in synchronization with the rotation measuring sprocket 33e may be added, and the rotation amount of the rotation measuring sprocket 33e may be measured from the rotation amount of the measuring rotating body.

[0031] The control unit 13 is configured, for example, as a personal computer and includes a ROM (IC chip) or RAM (magnetic disk or SSD) for storing various programs and data as a storage device, RAM for temporarily storing various data, a CPU as an arithmetic processing unit, a communication device for obtaining information from recording media and other control devices as an input device, a keyboard and mouse for inputting various operation instructions, and a display for outputting the operating status as an output device.

[0032] The memory of the control unit 13 stores a program for performing pre-cutting, as well as a program that counts the rotation amount of the rotation measuring sprocket 33e based on the detection signal of the rotation amount detection sensor 43, and controls the operation of the motor 32 in accordance with the amount of transfer required to move rod-shaped parts of different lengths from the reference position to the discharge position based on the rotation amount of the rotation measuring sprocket 33e. Furthermore, the memory of the control unit 13 can be configured to include a program that changes the transfer speed of the parts based on the position detection of the rod-shaped parts by the position detection sensor 41, which serves as the reference position.

[0033] Next, the control for transporting the rod-shaped part using the rotation amount detection sensor 43 and the preferred position of the rotation measuring sprocket 33e, as determined by the program stored in the control unit 13, will be described. As shown in Figure 1, the processed part, after processing is completed by the processing unit 11, is transported to the transport unit 12. The transport of the part to the transport unit 12 may be, for example, by a conveyor using rollers, or by a transport device that grasps both sides of the part in the width direction and transports the part in the longitudinal direction. When the part is transported onto the roller 23 located on the upstream side (right side in Figure 1) of the rollers 23 along the transport path of the transport unit 12, the control unit 13 performs drive control of the motor 32 to rotate the roller 23, and the part is transported along the transport path.

[0034] The amount of parts transferred corresponds to the amount by which the chain 31 rotates the sprocket 33. The rotation of the output shaft of the motor 32 causes the drive sprocket 33a to rotate, and the rotation of the chain 31 attached to the drive sprocket 33a causes the roller sprocket 33b to rotate, which in turn causes the roller 23 to rotate.

[0035] The amount of part to be transported can be set as a sum of a fixed amount of transport from the reference position of the part's tip, detected by the position detection sensor 41, until the tip of the part reaches the center position of the part after transport, and a transport amount equivalent to half the length of the part. Part transport control is performed until the amount of rotation of the rotation measuring sprocket 33e corresponding to the set amount of part transport is reached. The amount of transport from the reference position to the center position of the part after transport corresponds to the position of the position detection sensor 41, so it can be set in advance as one of the data of the control unit 13. Half the length of the part can be identified by the control unit 13 by referring to the specification data of the part in the pre-cutting process, so the timing of stopping the drive of the motor 32 can be determined by the program of the control unit 13. As a result, parts of different lengths can be transported with simple control to a position where the center positions of the parts, which are the discharge positions, are aligned.

[0036] Furthermore, the transfer speed of the parts can be set to avoid sudden stops, and the measured value of the rotation amount of the rotation measuring sprocket 33e can also be used for this deceleration control. For example, if the rotation amount of the rotation measuring sprocket 33e is set to the amount of one rotation (for example, 273 mm if the tooth spacing is 21 mm and the number of teeth is 13), then deceleration control should be started when the rotation amount reaches one rotation before the set amount of rotation before the motor 32 stops (for example, 273 mm remaining). This deceleration control can be used regardless of the length of the parts, and even with parts of significantly different lengths, control from the start of deceleration to stopping can be achieved with simple control settings.

[0037] Here, some of the parts manufactured by pre-cutting are long, sometimes exceeding 6 meters in length, and the number of rollers 23 is set up to accommodate these lengths. As a result, there is a delay due to the slack in the chain 31 between the time the drive sprocket 33a starts rotating and the time when the numerous rollers 23 start rotating, and the timing at which the driving force of the chain 31 is transmitted and the rollers 23 start rotating may vary depending on the position of the rollers 23.

[0038] When the drive sprocket 33a begins to rotate in one direction (counterclockwise in Figure 2(A)) to transport the parts, the driving force is easily transmitted to the roller 23 at the leading end of the transport path (left side in Figure 2(A), downstream side of the transport path). On the other hand, the roller 23 at the rear end of the transport path (right side in Figure 2, upstream side of the transport path) begins to rotate when the entire upper portion of the chain 31 is taut, resulting in a time difference in the start of rotation between the upstream and downstream sides of the transport path.

[0039] The rotational measurement sprocket 33e is positioned so that the driving force of the chain 31 is transmitted to it with a delay compared to the roller 23 located furthest upstream in the transport path. Using the circumferential direction of the chain 31's rotation for transporting parts (the direction of the arrow in Figure 2(A)) as a reference, the rotational measurement sprocket 33e is positioned behind the roller 23 located furthest upstream in the transport path (the roller 23 at the right end of Figure 1) in the circumferential direction (opposite to the direction of the arrow in Figure 2(A)). For the drive sprocket 33a, the rotational measurement sprocket 33e is positioned closer to the leading end in the circumferential direction of the chain 31's rotation. In this case, when the rotational measurement sprocket 33e begins to rotate, all the rollers 23 are rotating and transporting parts. Therefore, by implementing control that determines the amount of parts transported based on the amount of rotation of the rotational measurement sprocket 33e, parts can be reliably transported to the discharge position.

[0040] In this way, the part can be moved to the discharge position along the transport direction based on the amount of rotation of the rotation measuring sprocket 33e measured by the rotation amount detection sensor 43, and the rotation measuring sprocket 33e rotates due to the driving force applied via the chain 31. Therefore, even if there is slack in the chain 31 or if its condition changes due to long-term use, the part can be accurately transported to the discharge position by using the amount of rotation of the sprocket (rotation measuring sprocket 33e) to which the driving force is transmitted via the chain 31. Furthermore, the rotation amount detection sensor 43 only needs to be able to measure the amount of rotation of the rotation measuring sprocket 33e, and the amount of rotation can be measured using a photoelectric sensor or a mechanical switch, which is less expensive than measuring devices using lasers, so that the part can be accurately transported to the discharge position while keeping costs down.

[0041] Furthermore, since the rotational amount of the rotational measuring sprocket 33e is measured using the space between the teeth of the rotational measuring sprocket 33e as the measurement target, the shape of the drive mechanism 30 can be used as is, which also helps to keep costs down.

[0042] It should be noted that the present invention is not limited to the embodiments described above, and it can be easily inferred that various improvements and modifications are possible without departing from the spirit of the invention. For example, it may be implemented in the following modified form.

[0043] In the above embodiment, the case in which the transfer device is configured as a pre-cutting processing apparatus 10 including a processing unit 11, a transfer unit 12, and a control unit 13 was described. However, the processing unit 11 may be excluded, and the transfer device may be configured by combining the transfer unit 12 and the control unit 13.

[0044] Furthermore, although the above embodiment described the case in which the transfer unit 12 transfers parts (products) that have been processed by the processing unit 11, the configuration of the transfer unit 12 may be applied not only to the transfer of processed parts, but also to the input unit for raw materials before processing or to the transport unit for wood in the process of processing.

[0045] Furthermore, in the above embodiment, a case was described in which a drive roller type conveyor using rollers 23, a chain 31, and a sprocket 33 is used as the transfer unit 12. However, the transfer unit 12 is not limited to this, and other mechanisms may be used to configure it. For example, the transfer unit may use a belt-driven type conveyor instead of a chain 31 to transfer parts, or the part that supports the parts may be made of a metal belt, or a pulley other than the sprocket 33 may be used as a rotating member. In this case as well, a rotating member separate from the driving rotating member is set as a specific rotating member whose rotation amount is measured by the rotation amount detection sensor 43, and control is performed to transfer the object to be transferred based on the rotation amount of the specific rotating member, thereby making it possible to create a transfer device that can transfer the object to be transferred accurately to the stopping position at low cost.

[0046] Furthermore, although the above embodiment described a case in which control is performed to move parts by measuring the amount of rotation of an outer roller sprocket 33c, which is separate from the roller sprocket 33b, the amount of rotation of the roller sprocket 33b or the inter-roller sprocket 33d may also be measured by the rotation amount detection sensor 43. In this case as well, it is preferable to provide the rotation amount detection sensor 43 to a sprocket 33 located at a position where the driving force of the circumferential member is not easily transmitted. For example, it is preferable to provide the rotation amount detection sensor 43 to any of the sprockets 33 that are close to the leading end in the circumferential direction of the chain 31 with respect to the drive sprocket 33a (for example, 10 or fewer, which corresponds to less than 50% of the total, or 6 or fewer, which corresponds to less than 30% of the total), and it is preferable to provide the rotation amount detection sensor 43 to any of the sprockets 33 that are located towards the leading end in the circumferential direction. Furthermore, the rotation amount detection sensor 43 can be configured in two or more locations. For example, if the transport unit is configured so that the transport direction of the parts is not one direction but two directions, forward and reverse, the rotation amount detection sensor 43 may be provided for each sprocket 33 in a position where the driving force of the circumferential member is not easily transmitted in each transport direction. [Industrial applicability]

[0047] This invention can be used as a transport device installed in a pre-cutting plant to transport completed parts, raw materials before processing, and lumber in the process of being processed. [Explanation of symbols]

[0048] 10: Pre-cutting processing device (transfer device), 11: Processing unit (processing device), 12: Transfer unit, 13: Control unit (control means), 23: Roller (support part), 31: Chain (circumferential member), 33a: Drive sprocket (drive member), 33b: Roller sprocket (part of rotating member), 33c: Roller outer sprocket (part of rotating member), 33d: Sprocket between rollers (part of rotating member), 33e: Rotation measurement sprocket (specific rotating member), 43: Rotation amount detection sensor (measurement means)

Claims

1. A transfer device configured to transfer objects such as rod-shaped parts processed by a processing device capable of pre-cutting, or rod-shaped materials before processing, in a predetermined direction, A support portion that supports the lower side of the object to be moved so that it can be moved in the predetermined direction, A circumferential member that can transmit a driving force to the support portion so that the object to be transported can be transported in the predetermined direction, A drive member that engages with the circumferential member and applies the driving force output by the drive source to the circumferential member, A plurality of rotating members that engage with the circumferential member and rotate by the driving force applied by the driving member, A measuring means capable of measuring the amount of rotation of a specific rotating member among the aforementioned rotating members, A parts transfer device comprising control means for transferring the object to be transferred to a predetermined position along a predetermined direction based on the amount of rotation of a specific rotating member measured by the measuring means.

2. The rotating member has a plurality of teeth on its outer circumference, The measuring means comprises a sensor capable of detecting the number of spaces formed between adjacent teeth when the specific rotating member rotates. The component transfer device according to claim 1, characterized in that the control means is configured to measure the amount of rotation of the specific rotating member based on the number of spatial portions or the number of teeth detected by the sensor.

3. The component transfer device according to claim 1 or 2, characterized in that the specific rotating member is installed among a plurality of rotating members at a position close to the leading edge in the circumferential direction in which the circumferential member rotates relative to the drive member.

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