Supply device

Abstract

According to one embodiment of the present disclosure, provided is a supply device for supplying a workpiece to a bending device for bending the workpiece, the supply device comprising: a base; the accommodating part is arranged on the base so as to form a space for loading a processed object; a placing part which is arranged on the base and is used for sequentially placing the processed objects supplied to the bending device; a transfer unit that grips the workpiece positioned in the housing unit at the center of the base and moves the workpiece toward the placement unit; and a position adjustment unit provided so that the transfer unit moves with respect to the front-rear direction of the base.

Description

TECHNICAL FIELD

[0001] The utility model relates to a feeder device. BACKGROUND

[0002] A metal wire or pipe feeder as a necessary device in a manufacturing process needs to be continuously and accurately transferred. Generally, such a feeder includes mechanical structural elements such as a roller, a guide track, and a clamp in order to control the position and direction of the metal wire or pipe. However, such a device has a complex structure and needs periodic maintenance, and can have an unstable operation under certain conditions.

[0003] In particular, in the case of loading workpieces in an irregular manner or overlapping a plurality of workpieces, it is possible to greatly reduce the performance of the transfer device. The metal wire or pipe can be wound or entangled, which can cause a reduction in the feeding speed and quality.

[0004] Although Patent EP 1927412 proposes a technology for solving some problems of a metal wire or pipe feeder, several major problems still exist. First, the manufacturing and maintenance costs increase due to the complex mechanical structure, and mechanical wear can occur when used for a long time. Second, in the case of high-speed transfer, the design for minimizing mechanical interference is insufficient, which can reduce system stability. Third, in the case of arranging workpieces in an irregular manner, there is a structural limitation in that it is difficult to control the accurate position and transfer.

[0005] Such problems can reduce the efficiency and stability of the metal wire or pipe feeder, and thus there is a need for continuous improvement in related technologies.

[0006]

Prior Art Documents

[0007]

Patent Documents

[0008] Patent Document 1: EP 1927412 SUMMARY

[0009] Problems to be Solved

[0010] According to an embodiment of the present disclosure, a feeder device that can improve the transfer efficiency of workpieces is provided.

[0011] Also, the utility model provides a feeder device that improves transfer accuracy.

[0012] Also, the utility model provides a feeder device that can increase automation and productivity.

[0013] Also, the utility model provides a feeder device that ensures device stability.

[0014] Solution to the problem

[0015] According to an embodiment of the present disclosure, a supply device for supplying a workpiece to a bending device that performs bending processing on the workpiece includes a base, a housing portion provided to the base to form a space in which the workpiece is loaded, a placement portion provided to the base to sequentially place the workpiece supplied to the bending device, a transfer portion that grips the workpiece located in the housing portion at a center of the base and moves to the placement portion, and a position adjustment portion provided so that the transfer portion can move in a front-rear direction of the base.

[0016] Also, a supply device is provided, wherein the transfer portion includes a sensor portion for sensing the workpiece to be gripped, a magnet portion for lifting the workpiece, and a finger portion for gripping the lifted workpiece, and the transfer portion is provided so as to be able to move up and down.

[0017] Also, a supply device is provided, wherein the sensor portion includes a contact portion that moves to a lower side of the sensor portion and detects the workpiece by contacting the workpiece, and an extension portion connected to the contact portion, and if the workpiece located at the highest position among the workpieces contacts the contact portion, the contact portion rises due to the workpiece and rises together with the contact portion to detect the position of the workpiece.

[0018] Also, a supply device is provided, wherein the magnet portion includes a permanent magnet that lifts the workpiece by magnetic force, and a rod portion that allows the permanent magnet to rise or fall.

[0019] Also, a supply device is provided, including a guide portion located at both ends of the transfer portion, and if the transfer portion grips the workpiece, the guide portion moves to a direction away from the transfer portion on both sides of the portion gripped by the transfer portion.

[0020] Also, a supply device is provided, wherein if the transfer portion falls to the side of the housing portion and contacts the workpiece located at the highest position among the workpieces, the transfer portion rises to avoid contacting the workpiece, the transfer portion is provided so that the transfer portion moves in the front-rear direction and grasps the position of the workpiece located at the height at which the workpiece is contacted, the transfer portion is provided so that the workpiece is lifted by the magnet portion after the transfer portion moves to the position of the workpiece located at the height at which the workpiece is contacted, and the transfer portion is provided so that the workpiece is removed from the transfer portion after the finger portion grips the workpiece.

[0021] Also, provided is a supply device in which, when the workpiece is removed from the transfer section, the finger section is opened, and after the finger section is opened, the contact section is lowered or the magnet section is raised as necessary to discharge the workpiece to the placement section.

[0022] Also, provided is a control method for a supply device including a base, a housing section provided in the base to form a space in which a workpiece is loaded, a placement section provided in the base to sequentially place the workpiece supplied to the bending device, a transfer section that grips the workpiece in the housing section and moves the workpiece to the placement section at the center of the base, and a position adjustment section provided so that the transfer section can move in the front-rear direction of the base, the sensor section including a contact section that moves to the lower side of the sensor section and detects the workpiece by contacting the workpiece, and an extension section connected to the contact section, the contact section rising due to the workpiece and rising together with the contact section to detect the position of the workpiece if the workpiece in the highest position of the workpiece contacts the contact section, in the control method for the supply device, if the transfer section is lowered to the side of the housing section and contacts the workpiece in the highest position, the transfer section is raised to avoid contacting the workpiece, the transfer section moves in the front-rear direction and grasps the position of the workpiece in the height at which the workpiece contacts, after the transfer section moves to the position of the workpiece in the height at which the workpiece contacts, the workpiece is lifted by the magnet section, after the finger section grips the workpiece, the workpiece is transferred to the placement section to remove the workpiece from the transfer section.

[0023] Effects of the Invention

[0024] The supply device of one embodiment of the present disclosure can improve the transfer efficiency of the workpiece.

[0025] Also, the present application can improve the transfer accuracy.

[0026] Also, the present application provides a supply device that can increase automation and productivity.

[0027] Also, the present application provides a supply device that ensures the stability of the device.

[0028] In addition to the above effects, the supply device of one embodiment of the present disclosure can of course also have other effects. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 FIG. 1 is a diagram showing a supply device 100 of one embodiment of the present disclosure.

[0030] Figure 2FIG. 1 is a diagram showing the configuration of a supply device according to an embodiment of the present disclosure.

[0031] Figure 3 FIG. 2 is a diagram showing the configuration of a supply device according to an embodiment of the present disclosure.

[0032] Figures 4 to 6 FIG. 3 is a diagram showing the operation of a supply device according to an embodiment of the present disclosure.

[0033] (Explanation of Reference Numerals)

[0034] 100: supply device 1: base

[0035] 11: support frame 12: side frame

[0036] 13: upper frame 2: housing

[0037] 3: placement portion 4: position adjustment portion

[0038] 41: motor 42: track

[0039] 43: guide track 5: transfer portion

[0040] 51: finger portion 52: sensor portion

[0041] 521: contact portion 522: extension portion

[0042] 523: first position detection portion 523a: lever

[0043] 524: second position detection portion 53: magnet portion

[0044] 530: lever housing 531: lever portion

[0045] 532: connecting portion 533: permanent magnet

[0046] 6: guide portion 61: clip portion

[0047] 62: roller portion DETAILED DESCRIPTION

[0048] Hereinafter, a specific embodiment of the present disclosure will be described with reference to the accompanying drawings. The following detailed description is helpful for a comprehensive understanding of the method, device, and / or system described in the present specification. However, this is merely an example, and the present disclosure is not limited thereto.

[0049] In describing the embodiments of this utility model, detailed descriptions of related prior art will be omitted if it is determined that such detailed descriptions would unnecessarily obscure the essence of this utility model. Furthermore, the terminology used below, defined in consideration of the functionality of this utility model, may vary depending on the intentions or conventions of the user, implementer, etc. Therefore, it should be defined based on the entire text of this specification. The terminology used in the detailed description is only for describing embodiments of this utility model and should not be limited thereto. Unless explicitly used differently, the singular form includes the meaning of the plural form. In this description, expressions such as "comprising" or "having" are intended to indicate a certain characteristic, number, step, action, element, part or combination thereof, and should not be construed as excluding the presence or possibility of one or more other characteristics, numbers, steps, actions, elements, part or combination thereof other than those described.

[0050] Furthermore, terms such as "first" and "second" can be added for the sake of sequence, distinction, or ease of explanation. For example, they can be used to distinguish situations where a structure performs the same function but is used in different locations or additional structures. Therefore, terms such as "first" and "second" can be omitted.

[0051] Figure 1 A diagram illustrating a supply device 100 according to an embodiment of the present disclosure. (Refer to...) Figure 1 The supply device 100 of one embodiment of the present disclosure includes a base 1, a receiving part 2, a placement part 3, a position adjustment part 4, and a transfer part 5.

[0052] The base 1 is a structural element located on the ground to support the supply device 100 described later. The base 1 can be configured as a frame. Specifically, it may include: a support frame 11 configured to support a load; a pair of side frames 12 disposed at both ends of the support frame 11 and extending upward relative to the ground; and an upper frame 13 supported by the side frames 12 and connected to the upper side of the pair of side frames 12.

[0053] The base 1, or the frame including the base 1, can be configured to be integrated with other equipment or structures. For example, a recess can be formed along the length of the frame.

[0054] A receiving section 2 may be provided on the upper side of the support frame 11. The receiving section 2 only needs to provide space to accommodate the workpiece and its shape is not restricted.

[0055] The receiving section 2 can be configured separately from the support frame 11. In this case, the receiving section 2 can be provided in the middle frame located on the upper side of the support frame 11.

[0056] In other words, the housing portion 2 can be provided to the base 1 to form a space for loading the workpieces. A plurality of workpieces can be irregularly loaded in the housing portion 2.

[0057] For example, in the case of a workpiece that is a circular pipe having a diameter of 4 to 5 mm and a long length, the workpiece can be placed in a state of being bundled on the housing portion 2 side, and if the bundle is untied, the workpiece is spread out and can be arranged in an irregular manner in the housing portion 2.

[0058] In the present specification, the object of the workpiece is not limited. The workpiece can be any shape or material as long as it can be held by the transfer portion described later. Preferably, the workpiece can be provided in the form of a long metal wire or pipe.

[0059] The placement portion 3 can be a portion where the workpiece is placed before being supplied to a bending device (not shown). That is, the workpiece loaded in the housing portion 2 can be moved by the transfer portion 5 and placed in the placement portion 3.

[0060] The placement portion 3 can be provided on one side of the support frame 11. This can be to facilitate access to the bending device that is not integrally formed.

[0061] Unlike the workpieces in the housing portion 2, the workpieces can be regularly arranged in the placement portion 3. This can be to enable one workpiece to be accurately gripped by a finger (not shown) or a gripper (not shown, hereinafter, the portion that grips the workpiece in the bending device will be collectively referred to as the gripper) or the like in the bending device.

[0062] To this end, the placement portion 3 can be provided in a form that supports a portion of the workpiece, rather than a form that supports the entire workpiece, to make it easy for the gripper to enter. That is, the placement portion 3 can be provided in a structure that supports the middle and both sides of the workpiece. However, this is not limited thereto, and the placement portion 3 can be provided at equal intervals or at irregular intervals.

[0063] Each placement portion 3 can be provided to extend in the front-rear direction of the base 1 and to descend downward. This is to enable guidance by gravity regardless of the position when the transfer portion 5 places the workpiece in the placement portion 3.

[0064] The position adjustment portion 4 can be provided to the base 1 and move the transfer portion 5 in the front-rear direction of the base 1.

[0065] Specifically, the position adjustment portion 4 can be provided to the upper frame 13 so that the upper frame 13 can move in the length direction of the base 1. As described later, the transfer portion 5 can be located in the upper frame 13 in the base 1. Therefore, if the upper frame 13 moves, the transfer portion 5 can also move together.

[0066] The position adjustment unit 4 includes: a track 42 located on the side frame 12; and a motor 41 that moves the upper frame 13 forward and backward via the track 42.

[0067] The position adjustment unit 4 may also include a guide rail 43. The guide rail 43 may be the part where the guide unit 6, described later, is located. The guide rail 43 may be located on the upper frame 13.

[0068] The guide rail 43 can be disposed on one side of the upper frame 13. The guide rail 43 can be configured as a conveyor belt.

[0069] Figure 2 This diagram illustrates the configuration of the tracks for the transfer unit and guide unit in one embodiment of this disclosure. Figure 3 This is a diagram of the transfer unit in one embodiment of this disclosure.

[0070] Reference Figure 2 and Figure 3 The supply device 100 of one embodiment of the present disclosure includes a transfer unit 5.

[0071] The transfer unit 5 is the part that holds the workpiece and moves it towards the placement unit 3. The transfer unit 5 may be located at the center of the base 1. More specifically, it may be located at the center along the length of the base 1. More specifically, it may simply be located on the side of the center along the length of the base 1. In this specification, the term "center" means a center that is not perfectly centered or near the center.

[0072] The transfer unit 5 can be movably positioned in the up and down direction and laterally. Detailed explanation follows: the transfer unit 5 can be movably positioned in the height direction of the base 1.

[0073] This is to hold the workpiece located in the receiving section 2 and move the workpiece to the placement section 3.

[0074] The transfer unit 5 includes a finger part 51, a sensor part 52, a magnet part 53, and a control part (not shown).

[0075] The finger portion 51 is configured as a clamp to hold the workpiece. The finger portion 51 can be electronically maintained in an open or closed state. That is, the finger portion 51 can hold the part of the workpiece that is lifted by the magnet portion 53.

[0076] The sensor unit 52 is a collective term for multiple sensors, and physically does not mean a single sensor. The sensor unit 52 can sense the workpiece being processed.

[0077] Specifically, the sensor portion 52 can include a portion that moves toward the side of the housing portion 2 in which the workpieces are stacked and senses the height of the workpieces. More specifically, when the workpieces are stacked in the housing portion 2, the workpiece closest to the transfer portion 5 can be sensed. Since the transfer portion 5 is located on the center side of the base 1, the sensor portion 52 can detect the workpiece that is located on the uppermost side in the center side of the base 1 in the length direction of the base 1. At this time, the end portion of the workpiece that is located on the upper side in the center side of the base 1 can be located lower than the other workpieces. For this reason, the guide portion 6 can be used. This will be described later.

[0078] The sensor portion 52, the finger portion 51, and the magnet portion 53 can each be configured in a module form. At this time, the sensor portion 52, the finger portion 51, and the magnet portion 53 can each be configured to be raised or lowered toward the side of the housing portion 2 (in the height direction of the base 1).

[0079] The sensor portion 52 can include a contact portion 521 and an extension portion 522. The contact portion 521 can be configured to extend in the front-rear direction of the base 1. The contact portion 521 can be a portion that comes into contact with the workpieces. The extension portion 522 can be configured to be connected to the contact portion 521 and move up and down together with the contact portion 521.

[0080] In other words, the sensor portion 52 can include a contact portion 521 that moves toward the lower side of the sensor portion 52 and detects the workpieces by coming into contact with the workpieces, and an extension portion 522 that is connected to the contact portion 521 and, if the workpiece located at the highest position of the workpieces comes into contact with the contact portion 521, the contact portion 521 is raised by the workpiece and rises together with the contact portion 521 to detect the position of the workpieces.

[0081] Further, the sensor portion 52 can include a first position detection portion 523 and a second position detection portion 524.

[0082] The first position detection portion 523 is a portion for detecting the height direction position of the workpieces.

[0083] The first position detection portion 523 is a portion that comes into contact with the extension portion 522. If the contact portion 521 described later comes into contact with the workpieces to press the workpieces, the extension portion 522 can be spaced apart from the first position detection portion 523 and can detect the height direction information of the workpieces.

[0084] The second position detection portion 524 is a portion that detects the front-rear direction position of the workpieces.

[0085] The second position detecting section 524 can be provided adjacent to the workpiece, and detect the workpiece located at the height direction position of the workpiece detected by the first position detecting section 523 and the extension section.

[0086] In a case where a plurality of workpieces exist at the height direction position determined after the first position detecting section 523 and the extension section 522 are separated, the second position detecting section 524 can sense the position of the workpiece detected first according to the movement of the transfer section 5.

[0087] At this time, the workpiece determined according to the detection of the first position detecting section 523 and the second position detecting section 524 can be transferred to the bending device side.

[0088] As described in detail below, if the contact section 521 is lowered and presses the workpiece, the extension section 522 is raised so that the sensor section 52 can detect the height direction position of the workpiece.

[0089] That is, during the period in which the contact section 521 is lowered, the extension section 522 is set to maintain the state of being in contact with the first position detecting section 523 of the sensor section 52 first, and then if the contact section 521 is in contact with the workpiece and presses the workpiece, the extension section 522 is moved away from the first position detecting section 523, whereby the height with reference to the height direction of the base 1 can be detected.

[0090] In other words, the sensor section 52 can include the contact section 521 that moves to the lower side of the sensor section 52 and is in contact with the workpiece to detect the workpiece, and the extension section 522 that is connected to the contact section 521, and if the workpiece located at the highest position of the workpiece is in contact with the contact section 521, the contact section 521 is raised by the workpiece and is raised together with the contact section 521 to detect the position of the workpiece.

[0091] The transfer section 5 can include a magnet section 53. The magnet section 53 can be raised or lowered in the height direction of the base 1. As needed, the magnet section 53 can include a permanent magnet 533, a rod section 531, and a connection section 532.

[0092] The magnet section 53 can function to lift the workpiece from the housing section 2.

[0093] The permanent magnet 533 can be provided to lift the workpiece. The permanent magnet 533 can be provided in a desired size to lift the workpiece. In other words, the permanent magnet 533 can be provided to lift the workpiece by magnetic force.

[0094] At this time, the magnet part 53 can include a rod part 531 that can protrude or be introduced into the rod case 530, and a connection part 532 for connecting the rod part 531 and the permanent magnet 533, in consideration of the height of the transfer part 5.

[0095] In other words, the magnet part 53 can include a permanent magnet 533 that lifts the workpiece by magnetic force, and a rod part 531 that is disposed so that the permanent magnet 533 can be raised or lowered.

[0096] Referring to Figure 2 and Figure 4 The supply device of one embodiment of the present disclosure can include a guide part.

[0097] The guide part 6 can be positioned at both sides of the transfer part 5. The guide part 6 can be provided as a pair.

[0098] After the transfer part 5 lifts the workpiece, the guide part 6 can move to the end part side of the workpiece while supporting the workpiece from both sides. In other words, the guide part 6 can be positioned at both ends of the transfer part 5, and if the transfer part 5 holds the workpiece, the guide part 6 can move to the direction away from the transfer part 5 at both sides of the part held by the transfer part 5.

[0099] That is, the guide part 6 can separate the workpieces guided from between the workpiece stacks to the bending device.

[0100] The guide part 6 can be provided to be opened or closed together with the finger part described above. The guide part 6 can have a clip part 61 provided in a clip shape and a roller part 62 provided at the end of the clip part 61.

[0101] The roller part 62 can be provided in an hourglass shape in which the center is sunken inward. Thus, even if the workpiece is held less accurately, the workpiece can be guided to the center side.

[0102] If the finger part 51 of the transfer part 5 holds the workpiece, the clip part 61 can be closed.

[0103] One pair of guide parts 6 can be placed in the guide part rail 43. One of the pair of guide parts 6 can be connected to the lower side of the guide part rail 43, and the other can be connected to the upper side of the guide part rail 43. Thus, as the guide part rail 43 is rotated in one direction, the pair of guide parts 6 can be spread to both sides or moved to the transfer part 5 side.

[0104] The movement of the guide part 6 is not limited. As long as the pair of guide parts 6 are away from or close to the transfer part 5 together at both sides of the transfer part 5, the movement is not limited.

[0105] Referring to Figures 4 to 6 The operation of the supply device of one embodiment of the present disclosure will be described.

[0106] When the work is placed in the housing portion 2, the transfer portion 5 is located on the upper side of the work. At this time, the sensor portion 52 of the transfer portion 5 can be lowered toward the work. At this time, the rod 523a connected to the first position detecting portion 523 can be moved to the housing portion 2 side. At this time, the first position detecting portion 523 can maintain a state of being in contact with the extension portion 522.

[0107] As the rod 523a continues to be lowered, the contact portion 521 can also be lowered. At this time, if the contact portion 521 comes into contact with the work, the extension portion 522 is spaced apart from the first position detecting portion 523. At this time, the coordinates of the corresponding point in the z-axis direction (the up and down (height) direction of the base) can be input to the control portion.

[0108] Subsequently, the rod 523a can be raised so that the contact portion 521 can be slightly spaced apart from the work. In a state in which the transfer portion 5 is slightly spaced apart from the work, the transfer portion 5 can be moved in the front and rear direction of the base 1. This can be in order to detect the position of the work to be transferred in the front and rear direction of the base 1.

[0109] Specifically, as the lower surface of the contact portion 521 is provided in a state of extending in the front and rear direction of the base 1, although it is possible to confirm the position of the work in the height direction to be transferred to the bending device in the future, it is difficult to confirm the position in the front and rear direction of the base 1. Therefore, in order to accurately specify the position of the work, it is necessary to confirm in which position in the front and rear direction of the base 1. Therefore, the transfer portion 5 can detect the position of the work while moving in the front and rear direction of the base 1.

[0110] That is, in order to detect the position of the work having a height of the work input in advance in the front and rear direction of the base 1, the transfer portion 5 can be moved in the front and rear direction of the base 1. When the transfer portion 5 is moved in the front and rear direction of the base 1, the position of the work having the height in the z-axis direction described above can be detected. The position of the work in the front and rear direction of the base 1 can be performed by the second position detecting portion 524.

[0111] The form or method of the second position detecting portion 524 is not limited.

[0112] If the position of the work is specified by the second position detecting portion 524, the transfer portion 5 can be moved to the position corresponding to the work to be transferred so that the magnet portion 53 operates. Depending on the situation, the rod portion 531 can be extended so that the permanent magnet 533 approaches the work, so that one work can be accurately lifted.

[0113] The transfer portion 5 can lift the work by the magnet portion 53. If the work is lifted by the magnet portion 53, the finger portion 51 can grip the work.

[0114] If the finger portion 51 holds the workpiece, the guide portion 6 can be positioned on both sides of the transfer portion 5 with the center of the workpiece as a reference, and can be raised completely from the transfer portion 5 in the length direction of the base 1.

[0115] Specifically, if the finger portion 51 of the transfer portion 5 holds the workpiece, the guide portion 6 can be positioned on both sides of the transfer portion 5 and can be adjacent to the transfer portion 5.

[0116] At this time, the clamp portion 61 can be closed so that the workpiece is positioned between the roller portions 62. If the clamp portion 61 is closed, the workpiece is positioned between the roller portions 62 to prevent the workpiece from being separated from the guide portion 6.

[0117] The clamp portion 61 can be maintained in a closed state, and the guide portion 6 can be moved away from the transfer portion 5. At this time, the guide portion track 43 can be operated, and the guide portion 6 can be moved away from the transfer portion 5.

[0118] When stacked in the housing portion 2, the workpieces can be entangled with each other. The workpieces are arranged in a long length, and the bundle can be spread out and cannot be arranged in order. The workpiece to be transferred can be selected by detecting the position of the portion adjacent to the transfer portion 5, and thus the end portion can be positioned below a workpiece different from the workpiece to be transferred.

[0119] The transfer portion 5 positioned at the center of the supply device can be problematic even if the workpiece is held by the finger portion 51 due to interference with other workpieces. Therefore, if the guide portion 6 is moved away from the transfer portion 5 and raised to the end portion of the workpiece, the workpieces are spaced apart and safely separated.

[0120] After the workpiece is raised, that is, after the finger portion 51 holds the workpiece, the transfer portion 5 can be moved toward the placement portion 3. At this time, the finger portion 51 of the transfer portion 5 is opened, and the workpiece falls to the placement portion 3. At this time, in a case where the workpiece does not fall due to the magnetic force of the magnet portion 53, the contact portion 521 of the sensor portion 52 is lowered, and thus the workpiece can be separated from the transfer portion 5.

[0121] That is, the supply device according to an embodiment of the disclosure for supplying a workpiece to a bending device that performs bending work on the workpiece can include a base, a housing portion provided in the base to form a space in which the workpiece is loaded, a placement portion provided in the base to sequentially place the workpiece supplied to the bending device, a transfer portion that holds the workpiece positioned in the housing portion at the center of the base and moves toward the placement portion, and a position adjustment portion provided so that the transfer portion can move in the front-rear direction of the base.

[0122] In other words, if the transfer section 5 descends toward the housing section 2 and contacts the workpiece having the highest level among the workpieces, the transfer section 5 ascends to avoid contacting the workpiece. Thereafter, the transfer section 5 can be configured to move in the front-rear direction and grasp the position of the workpiece at the level contacted by the workpiece. In the case where the workpiece at the highest level is a plurality of workpieces, the second position detection section 524 determines that the workpiece first sensed is the workpiece to be transferred.

[0123] At this time, in the case where the guide section 6 operates but the end of the workpiece cannot be completely lifted due to the workpiece being covered by other workpieces, the clip section 61 opens so that the workpiece can be dropped again to the workpiece stack. In this case, the supply device 100 can perform operation in order to grip the workpiece from the beginning.

[0124] The transfer section 5 can be configured to lift the workpiece by the magnet section 53 after the transfer section 5 moves to the position of the workpiece at the level contacted by the workpiece. The transfer section 5 can be configured to move toward the placement section 3 after the finger section 51 grips the workpiece to remove the workpiece from the transfer section. When the workpiece is removed from the transfer section, the finger section 51 can be opened, and after the finger section 51 is opened, the contact section 521 descends or the magnet section 53 ascends as necessary to discharge the workpiece to the placement section 3.

[0125] The above has described the representative embodiments of the present application in detail, but it is understood by those skilled in the art to which the present application pertains that various modifications can be made to the above-described embodiments without departing from the scope of the present application. Therefore, the scope of protection of the present application should not be limited to the described embodiments, but should be specified by the claims and technical solutions equivalent to the claims.

Claims

1. A feeding device for supplying a workpiece to a bending device for bending a workpiece, characterized in that, Comprise: a base; a housing provided to the base to form a space to load a workpiece; a placement portion provided to the base to sequentially place the workpiece supplied to the bending device; a transfer portion to hold the workpiece in the housing and move to the placement portion in the center of the base; and a position adjustment portion provided to the transfer portion to move in the front and back direction of the base.

2. The supply device according to claim 1, wherein the transfer portion comprises: a sensor portion to sense the workpiece to be held; a magnet portion to lift the workpiece; and a finger portion to hold the lifted workpiece, the transfer portion is provided to move in the up and down direction.

3. The supply device according to claim 2, wherein the sensor portion comprises: a contact portion to move to the lower side of the sensor portion and detect the workpiece by contacting the workpiece; and an extension portion connected to the contact portion, if the workpiece located at the highest position of the workpiece contacts the contact portion, the contact portion is lifted by the workpiece and is lifted together with the contact portion to detect the position of the workpiece.

4. The supply device according to claim 2, wherein the magnet portion comprises: a permanent magnet to lift the workpiece by magnetic force; and a rod portion to lift or lower the permanent magnet.

5. The supply device according to claim 1, comprising: a guide portion located at both ends of the transfer portion, if the transfer portion holds the workpiece, the guide portion moves to the direction away from the transfer portion on both sides of the portion held by the transfer portion.

6. The supply device according to claim 3, wherein if the transfer portion is lowered to the side of the housing and contacts the workpiece located at the highest position, the transfer portion is lifted to avoid contacting the workpiece, the transfer portion is provided to move in the front and back direction and grasp the position of the workpiece located at the height contacting the workpiece, the transfer portion is provided to lift the workpiece by the magnet portion after the transfer portion moves to the position of the workpiece located at the height contacting the workpiece, the transfer portion is provided to move to the side of the placement portion to remove the workpiece from the transfer portion after the finger portion holds the workpiece. ​

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