Transfer feeding device for multi-stage press

Abstract

A transfer feeding device for a multi-stage press is disclosed. A transfer feeding device for a multi-stage press according to one embodiment of the present invention is configured on one side of a multi-stage press having an upper die unit in which a multi-stage upper die is arranged in the process direction and a lower die unit in which a multi-stage lower die is arranged in the process direction, and comprises a feed unit having a frame, a transverse movement unit, a longitudinal movement unit, and a suction cup to sequentially transfer a material supplied to the lower die of the multi-stage press. In a state where a plurality of feeders are arranged between the multi-stage dies installed in a single press facility, the suction cup on the feeder stably and accurately transfers the material in an optimal movement pattern without interfering with the operation of the press facility, thereby improving the forming speed and productivity.

Description

Technology Field

[0001] The present invention relates to a transfer feeding device for a multi-stage press, and more specifically, to a transfer feeding device for a multi-stage press that accurately and quickly transfers material between multiple dies installed in a single press facility. Background Technology

[0002] Generally, it takes about 20,000 to 30,000 parts to assemble a car at a car manufacturer.

[0003] In particular, the car body is the first stage of the automobile manufacturing process; after producing body panels or component panels using press equipment, they are transferred to a body shop where the body panels and component panels are assembled to form a car body in a white body (BIW) state.

[0004] In order to form panel materials in this way, they undergo various press processes, and in particular, through press processes such as trimming, forming, piercing, and flanging, forming operations such as cutting, forming, hole processing, and bending are carried out.

[0005] In particular, for small parts, parts are produced by multi-stage forming using multiple dies installed in a single press machine. In this case, a transfer feeding device is applied to sequentially transfer the material formed in one die to the next die so that the press process can proceed sequentially.

[0006] In other words, the transfer feeding device is a part of a press automation system that enables the material formed in the mold of a preceding process to be sequentially transferred to the mold of a subsequent process to form a final finished product while the press equipment having a multi-stage mold is driven upward.

[0007] These transfer feeding devices are manufactured as dedicated equipment for the press equipment, taking into account various requirements such as the operating characteristics of the press equipment, the number of forming processes, installation space, productivity, stability, and accuracy.

[0008] In a conventional transfer feeding device, a multi-stage finger enters the press equipment from the outside to transfer materials to the multi-stage molds, and then moves back outside the press equipment, repeating the process of the press equipment pressing the multi-stage molds to form them.

[0009] However, conventional transfer feeding devices have the disadvantage of low space utilization because the drive unit is installed outside the press equipment, requiring a large external space for installation, and considering the operating radius for the finger bar connecting the multi-stage fingers to enter from outside the press equipment.

[0010] In addition, conventional transfer feeding devices must be formed long so that the finger bar operates without interference with the press equipment from a drive unit configured outside the press equipment. Therefore, if the driving speed of the finger bar increases, excessive vibration occurs in the multi-stage fingers, which acts as an impediment to the stability and accuracy of material transfer and has a negative impact on productivity and work efficiency.

[0011] The matters described in this background technology section are written to enhance understanding of the background of the invention and may include matters that are not prior art already known to those skilled in the art to which this technology belongs. The problem to be solved

[0012] An embodiment of the present invention aims to provide a transfer feeding device for a multi-stage press that improves forming speed and productivity by arranging multiple feeders between multi-stage molds installed in a single press facility to stably and accurately transfer material in an optimal behavioral pattern without interfering with the operation of the press facility. means of solving the problem

[0013] In one or more embodiments of the present invention, a frame installed at the rear of a multi-stage press having an upper die unit in which a multi-stage upper die is arranged in the process direction and a lower die unit in which a multi-stage lower die is arranged in the process direction, so as to sequentially convey a material supplied to the lower die of the multi-stage press; a lateral movement unit in which a lateral slider connected to a first motor installed in the center of the frame via a rack and pinion structure reciprocates laterally with respect to the front of the frame by driving the first motor; and a longitudinal movement unit in which a longitudinal slider connected to a link shaft connected to a second motor installed on one side of the frame via a gearbox and connected via a link structure reciprocates longitudinally with respect to the front of the frame by driving the second motor. A transfer feeding device for a multi-stage press can be provided, comprising a feed unit in which a feed beam, having a plurality of feeders fixed to the front surface for material transfer, is installed to slide laterally with respect to the front surface of the longitudinal slider and reciprocates longitudinally together with the longitudinal slider, and at the same time, one side of the feed beam is connected to the transverse slider through a longitudinal guide means so as to guide the longitudinal reciprocating motion by the longitudinal slider and reciprocate laterally together with the transverse slider.

[0014] The above frame may include a front plate positioned opposite the lower die of the multi-stage press and having an opening formed in the transverse direction; a lower plate fixed to the lower part of the front plate; and two side plates fixed to each side of the front plate and the lower plate.

[0015] The above lateral movement unit may include: a first motor installed through a rear plate at the center of the rear of an opening on the front plate of the frame; a lateral slider installed to slide laterally through a first lateral rail means on the front of the rear plate exposed through the opening of the front plate; a pinion installed on the rotation axis of the first motor at the front of the front plate; and a rack bar fixed to the lower part of the lateral slider and engaged with the pinion.

[0016] Here, the first transverse rail means may include a first transverse rail fixed transversely to the front surface of a rear plate exposed through an opening of the front plate; and a first transverse rail block fixed to each side of the rear surface of the transverse slider and installed to slide along the first transverse rail.

[0017] And the above longitudinal movement unit may include: a gearbox installed on one side of the lower plate of the frame; a second motor installed to transmit rotational power to the gearbox; a link shaft installed transversely on the gearbox to receive rotational power from the second motor and rotate, with both sides rotatably installed on the two side plates through bearings; a longitudinal slider installed to slide longitudinally on each front side of the front plate through a longitudinal rail means; and a link means connected by a link structure between each side of the link shaft and each rear side of the longitudinal slider to transmit the rotational movement of the link shaft to the longitudinal slider as an up-and-down movement.

[0018] The above link means may include a rotating lever installed on each side of the link shaft and rotating together with the link shaft; a joint bar installed on both sides of the longitudinal slider facing backward; and a link bar connecting the rotating lever and the joint bar to transmit the rotational movement of the rotating lever to the joint bar as an up-and-down movement through link operation.

[0019] Here, one end of the link bar may be connected to the rotary lever via a rotary pin, and the other end may be connected to the joint bar via a ball joint.

[0020] Additionally, the longitudinal rail means may include a longitudinal rail fixed longitudinally on both sides of the front of the front plate; and a longitudinal rail block fixed to each side of the rear of the longitudinal slider and installed to slide along the longitudinal rail.

[0021] And the feed unit may include: a feed beam installed to slide laterally through a second transverse rail means on the front of the longitudinal slider; a plurality of feeders installed along the transverse direction on the front of the feed beam to adsorb material and transport and supply material to the multi-stage lower die; and a longitudinal guide means configured such that a guide roller is guided longitudinally along a guide groove of a guide block between the feed beam and the transverse slider, thereby guiding the feed beam to reciprocate longitudinally together with the longitudinal slider and simultaneously reciprocate transversely together with the transverse slider.

[0022] The above longitudinal guide means may include a guide block installed on the front of the transverse slider and having a guide groove formed longitudinally on the front; and a guide roller rotatably installed on the rear of the feed beam through a roller bracket and guided longitudinally along the guide groove.

[0023] Here, the feeder may include a feed bar positioned along the transverse direction on the front of the feed beam opposite the multi-stage lower die and fixed via a fixing bracket; and suction cups each fixed to the tip of the feed bar to vacuum-adsorb a material.

[0024] Additionally, the second transverse rail means may include a second transverse rail fixed transversely to both rear sides of the feed beam; and a second transverse rail block fixed to each front side of the longitudinal slider and installed to slide along the second transverse rail. Effects of the invention

[0025] A transfer feeding device for a multi-stage press according to an embodiment of the present invention is configured such that a plurality of feeders are arranged between multi-stage molds installed in a single press facility, and the suction cups of the feeders move in the lateral and longitudinal directions in an optimal movement pattern in conjunction with the forming operation without interference with the operation of the press, thereby sequentially and stably transferring the material, and thus improving the forming speed and productivity of the press.

[0026] In addition, other effects that can be obtained or predicted by the embodiments of the present invention will be disclosed directly or implicitly in the detailed description of the embodiments of the present invention. That is, various effects predicted according to the embodiments of the present invention will be disclosed within the detailed description to be set forth below. Brief explanation of the drawing

[0027] These drawings are intended for reference to explain exemplary embodiments of the present invention, and therefore, the technical concept of the present invention should not be interpreted as being limited to the attached drawings. FIG. 1 is a front perspective view of a multi-stage press to which a transfer feeding device according to an embodiment of the present invention is applied. FIG. 2 is a rear perspective view of a multi-stage press to which a transfer feeding device according to an embodiment of the present invention is applied. FIG. 3 is a front perspective view of a transfer feeding device according to an embodiment of the present invention. FIG. 4 is a front exploded perspective view of a transfer feeding device according to an embodiment of the present invention. FIG. 5 is a rear exploded perspective view of a transfer feeding device according to an embodiment of the present invention. Figure 6 is a cross-sectional view along line AA of Figure 3. FIG. 7 is a front view of a multi-stage press to which a transfer feeding device according to an embodiment of the present invention is applied. Figure 8 is an enlarged view of part B of Figure 7. The drawings referenced above are not necessarily drawn to scale and should be understood as presenting somewhat simplified representations of various preferred features illustrating the basic principles of the invention. For example, specific design features of the invention, including specific dimensions, orientations, positions, and shapes, will be partially determined by specific intended applications and usage environments. Specific details for implementing the invention

[0028] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0029] The terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used herein, singular forms are intended to include plural forms as well, unless explicitly otherwise indicated in the context.

[0030] It should also be understood that the terms “comprising” and / or “comprising” as used herein indicate the presence of the specified features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, components, and / or groups thereof. As used herein, the term “and / or” includes any one or all combinations of one or more associated items.

[0031] In this specification, the term "combined" indicates a physical relationship between two components that are directly connected to each other or indirectly connected through one or more mediating components.

[0032] Furthermore, the size and thickness of each component shown in the drawings are indicated arbitrarily for the convenience of explanation, so the present invention is not necessarily limited to what is shown in the drawings; the sizes are shown by simple comparison to clearly represent various parts and regions.

[0033] To clearly explain the embodiments of the present invention, parts unrelated to the description have been omitted, and throughout the specification, identical or similar components are described using the same reference numerals. Furthermore, in the following description, the names of components are distinguished as "first," "second," etc., for the purpose of differentiation when their names are identical, and are not necessarily limited to that order.

[0034] FIGS. 1 and 2 are front and rear perspective views of a multi-stage press to which a transfer feeding device according to an embodiment of the present invention is applied, FIG. 3 is a front perspective view of a transfer feeding device according to an embodiment of the present invention, and FIGS. 4 and 5 are front and rear exploded perspective views of a transfer feeding device according to an embodiment of the present invention.

[0035] Referring to FIGS. 1 and FIGS. 3, in this specification, the reference direction for describing the following components is defined as follows: the lower left side of the drawing is referred to as the front, the upper right side of the drawing is referred to as the rear, and the direction intersecting the front and rear directions is referred to as the side, and the upper and lower sides of the drawing are referred to as the up and down directions.

[0036] In this specification, the end of a component (e.g., one end, the other end, or both ends, etc.) indicates the end of the component in any direction, and the end portion of a component (e.g., one end portion, the other end portion, or both ends, etc.) is defined as indicating a certain part of the component including the end. However, expressions such as "multiple stages," "five stages," etc. among the components refer to stages of the forming process in a press forming process and are used in an implicit sense to express multiple forming stages or five forming stages.

[0037] The transfer feeding device according to an embodiment of the present invention may be installed in a single press facility in which a plurality of molds are installed to sequentially transfer and form materials, or may be installed between presses, and may be part of a press automation device that allows semi-formed materials to be sequentially transferred to the next mold or press to form a finished product, so that the material formed in one mold or press can be transferred to the next mold or next press to perform press work again.

[0038] In an embodiment of the present invention, the transfer feeding device is described as forming while sequentially transferring the material from the rear of a single multi-stage press equipped with five molds.

[0039] Referring to FIGS. 1 and 2, a transfer feeding device (30) for a multi-stage press is configured at the rear of a multi-stage press (1) having an upper die unit (10) in which five upper dies (11) are arranged in the process direction and a lower die unit (20) in which five lower dies (21) are arranged in the process direction, and is configured to sequentially transfer materials supplied to the five lower dies (21).

[0040] As shown in the drawing above, the multi-stage press (1) to which the transfer feeding device (30) according to the embodiment of the present invention is applied is exemplified as a multi-stage press (1) in which the upper mold unit (10) and the lower mold unit (20) each have 5 upper molds (11) and 5 lower molds (21), but it is not necessarily limited thereto, and the number of upper molds (11) and lower molds (21) installed in the upper mold unit (10) and the lower mold unit (20), respectively, can be adjusted according to the requirements of the process steps required for molding.

[0041] Here, the upper mold unit (10) has five upper molds (11) installed at regular intervals along the process direction at the bottom of the upper mold die (13) to perform five molding processes.

[0042] And the lower unit (20) has five stages of lower dies (21) installed at regular intervals on the upper part of the lower die (23) to perform five molding processes along the process direction.

[0043] That is, in correspondence with each molding process, five upper die (11) and five lower die (21) are arranged vertically, and guide posts (15) and guide housings (25) are installed on both front sides between the upper die (13) and the lower die (23) to guide the upward and downward operation of the upper die (13) relative to the lower die (23).

[0044] Below, a transfer feeding device (30) installed at the rear of the lower unit (20) of such a multi-stage press (1) will be described in more detail.

[0045] Referring to FIGS. 3 to 5, a transfer feeding device (30) according to an embodiment of the present invention includes a frame (40), a lateral movement unit (50), a longitudinal movement unit (60), and a feed unit (70).

[0046] First, the frame (40) is installed at the rear of the lower unit (20) of the multi-stage press (1) and supports the transfer feeding device (30) while fixing it in place so that it can operate.

[0047] In this frame (40), a front plate (41) is positioned at the rear of the lower unit (20) opposite the lower mold (21) of the 5th stage on the lower unit (20), and a lower plate (43) is fixed to the lower part of the front plate (41). At this time, an opening (41b) is formed in the lateral direction of the front plate (41). In addition, two side plates (45) are fixed to each side of the front plate (41) and the lower plate (43).

[0048] Figure 6 is a cross-sectional view along line AA of Figure 3.

[0049] The lateral movement unit (50) is configured such that a lateral slider (51), connected to a first motor (M1) installed in the center of the frame (40) by a rack and pinion structure, reciprocates laterally with respect to the front of the frame (40) by the driving of the first motor (M1).

[0050] This lateral movement unit (50) includes a first motor (M1), a lateral slider (51), a pinion (53), and a rack bar (55).

[0051] The first motor (M1) is installed through the rear plate (41a) at the rear center of the front plate (41) of the frame (40).

[0052] At this time, the first motor (M1) may be a servo motor capable of controlling the rotational speed and rotational direction, and the rotation axis (M1a) of the first motor (M1a) penetrates the rear plate (41a) and is exposed to the opening (41b) of the front plate (41).

[0053] Referring to FIG. 6, a transverse slider (51) is installed so as to be slidably moved in the transverse direction through a first transverse rail means (57) on the front of a rear plate (41a) exposed through an opening (41b) of a front plate (41).

[0054] Here, the first transverse rail means (57) has the first transverse rail (TR1) fixed transversely to the front of the rear plate (41a) exposed through the opening (41b) of the front plate (41). Additionally, the first transverse rail block (TB1) can be fixed to each of the rear sides of the transverse slider (51) and installed so as to be slidable along the first transverse rail (TR1).

[0055] And the pinion (53) is installed on the rotation axis (M1a) of the first motor (M1) at the front of the front plate (41), and the rack bar (55) is fixed to the lower part of the transverse slider (51) and meshes with the pinion (53).

[0056] The longitudinal movement unit (60) is configured such that a longitudinal slider (61), connected via a link structure to a link shaft (63) connected to a second motor (M2) installed on one side of the frame (40) through a gearbox (65), reciprocates longitudinally with respect to the front of the frame (40) by driving the second motor (M2).

[0057] This longitudinal motion unit (60) includes a gearbox (65), a second motor (M2), a link shaft (63), a longitudinal slider (61), and a link means (80).

[0058] The gearbox (65) is installed on one side of the lower plate (43) of the frame (40), and can be configured to output rotational power input to a servo worm gear at a right angle.

[0059] The second motor (M2) is installed on one side of the rear to transmit rotational power to the gearbox (65) and may be a servo motor capable of controlling the rotational speed and direction of rotation.

[0060] The link shaft (63) is installed transversely in the gearbox (65) and rotates by receiving rotational power from the second motor (M2) at a right angle, and both ends are rotatably supported on both side plates (45) through bearings (BR).

[0061] A longitudinal slider (61) is installed so as to be able to slide longitudinally on each of the front sides of the front plate (41) via a longitudinal rail means (67).

[0062] Here, the longitudinal rail means (67) can be installed such that a longitudinal rail (LR) is fixed along the longitudinal direction on each of the front sides of the front plate (41), and a longitudinal rail block (LB) is fixed on each of the rear sides of the longitudinal slider (61), so as to be able to slide along the longitudinal rail (LR). At this time, the longitudinal rail blocks (LB) on both sides can be configured with two each in the upper and lower directions.

[0063] The link means (80) is configured to be connected by a link structure between each side of the link shaft (63) and the rear sides of the longitudinal slider (61) to transmit the rotational movement of the link shaft (63) to the longitudinal slider (61) as an up-and-down movement.

[0064] That is, the link means (80) is driven by rotation levers (81) installed on each side of the link shaft (63) to rotate together with the link shaft (63), and joint bars (83) are installed on both sides of the longitudinal slider (61) facing backward.

[0065] Additionally, the rotating lever (81) and the joint bar (83) are connected by a link bar (85), and the rotational movement of the rotating lever (81) is transmitted to the joint bar (83) as an up-and-down movement through link operation. At this time, one end of the link bar (85) is rotatably connected to the rotating lever (81) through a rotating pin (87), and the other end is connected to the joint bar (83) through a ball joint (89), thereby having a hinge function in all directions.

[0066] And the feed unit (70) has a feed beam (71) fixed to a plurality of feeders (73) for material transfer on the front, which is installed to slide laterally with respect to the front of the longitudinal slider (61) and reciprocates longitudinally together with the longitudinal slider (61).

[0067] Additionally, the feed unit (70) is configured such that one side of the feed beam (71) is connected to the transverse slider (51) through a longitudinal guide means (90), thereby guiding the longitudinal reciprocating motion by the longitudinal slider (61) and allowing it to reciprocate in the transverse direction together with the transverse slider (51).

[0068] This feed unit (70) includes a feed beam (71), a plurality of feeders (73), and a longitudinal guide means (90).

[0069] The feed beam (71) is installed so as to be slidably moved laterally through the second transverse rail means (77) on the front of the longitudinal slider (61). At this time, the feed beam (71) may be composed of a profile beam of a certain pattern, but is not necessarily limited thereto and may be manufactured in various shapes as needed.

[0070] Here, the second transverse rail means (77) can be installed such that the second transverse rail (TR2) is fixed transversely on both sides of the rear of the feed beam (71), and the second transverse rail block (TB2) is fixed on each side of the front of the longitudinal slider (61), allowing it to slide along the second transverse rail (TR2). At this time, the second transverse rail (TR2) and the second transverse rail block (TB2) on both sides can be configured with two each in the upper and lower directions.

[0071] In addition, a plurality of feeders (73) are installed along the transverse direction on the front of the feed beam (71) to adsorb material and transport and supply material to the lower die (21) of the 5th stage.

[0072] Each feeder (73) may be configured such that five feed bars (73a) are arranged along the transverse direction on the front of the feed beam (71) opposite the lower die (21) of the 5th stage and are fixed through a fixed bracket (FB), and a suction cup (73b) is installed at the tip of each feed bar (73a) to suction the material by vacuum.

[0073] Here, the plurality of feeders (73) may be composed of 5 feeders (73) to correspond to the 5th stage lower die (21).

[0074] And the longitudinal guide means (90) is configured such that the guide roller (91) is guided longitudinally along the guide groove (95) of the guide block (93) between the feed beam (71) and the transverse slider (51), thereby guiding the feed beam (71) to reciprocate longitudinally together with the longitudinal slider (61) and simultaneously reciprocate transversely together with the transverse slider (51).

[0075] Referring to FIG. 6, the longitudinal guide means (90) is composed of a guide roller (91) and a guide block (93).

[0076] First, the guide block (93) is installed on the front of the transverse slider (51), and a guide groove (95) is formed in the longitudinal direction on the front. Additionally, the guide roller (91) is rotatably installed on the rear of the feed beam (71) via a roller bracket (97) and is guided by rolling contact in the longitudinal direction along the guide groove (95) of the guide block (93).

[0077] FIG. 7 is a front view of a multi-stage press to which a transfer feeding device according to an embodiment of the present invention is applied, and FIG. 8 is an enlarged view of part B of FIG. 7.

[0078] Hereinafter, the operation of a transfer feeding device (30) for a multi-stage press according to an embodiment of the present invention will be explained with reference to FIGS. 7 and 8.

[0079] First, the transfer feeding device (30) according to an embodiment of the present invention configures a control logic such that the first motor (M1) of the lateral movement unit (50) and the second motor (M2) of the longitudinal movement unit (60) are controlled in conjunction with the operation of the upper mold unit (10) of the multi-stage press (1) to control the rotational speed and rotational direction.

[0080] That is, the encoder inputs the position of the upper mold unit (10) that is stopped or moving into the servo controller of the PLC, and the servo controller calculates a movement trajectory that does not interfere with the upper mold unit (10) that is moving up and down, using the input position value of the upper mold unit (10), and the feeder (73) that moves in the longitudinal and transverse directions in conjunction with the movement of the upper mold unit (10) along the calculated movement trajectory of the feeder (73) so that the feeder (73) moves in conjunction with the movement of the upper mold unit (10) so that the material is sequentially transferred from the preceding lower mold (21) to the succeeding lower mold (21) of the lower mold unit (20).

[0081] Accordingly, the operation of the mold unit (10) and the transfer of material by the feeder (73) are carried out in conjunction without interference.

[0082] In the above, the lower mold (21) is distinguished into a preceding lower mold and a succeeding lower mold simply to distinguish between the lower mold of the preceding process and the lower mold of the succeeding process.

[0083] Hereinafter, the operation of the transfer feeding device (30) according to an embodiment of the present invention is described in more detail by means of the above control.

[0084] First, in order to feed material into a multi-stage press (1) and form a product into a specific shape, generally, forming operations such as cutting, forming, hole processing, and bending are performed through press processes such as trimming, forming, piercing, and flanging.

[0085] To this end, the multi-stage press (1) applied in the embodiment of the present invention has five stages of upper die (11) and five stages of lower die (21) installed in the upper die (13) and lower die (23), respectively.

[0086] In addition, the transfer feeding device (30) is installed to transfer material between the upper die (11) and the lower die (21) for each molding process, and operates in conjunction with the operation of the upper die unit (10) to improve productivity through rapid and accurate material transfer.

[0087] Here, the transfer feeding device (30) may be installed within a single press (1) as in an embodiment of the present invention and operated to transfer material between multiple lower molds (21), but may also be installed between presses to transfer material.

[0088] As shown in FIG. 7, in an embodiment of the present invention, the upper die (11) and lower die (21) installed in the upper die (13) and lower die (23) are each installed in 5 stages to perform 5 molding processes, but the number of stages can be reduced or increased depending on the molding process to be performed.

[0089] To explain the operation of such a transfer feeding device (30) in more detail, the material transfer process is explained based on the behavior pattern of a single suction cup (73b) configured in a single feeder (73) between a preceding lower die (21) and a succeeding lower die (21) within a single press (1), as shown in FIG. 8.

[0090] That is, with one suction cup (73b) positioned at the first position (P1) within the evacuation section (ES) between the preceding lower mold (21) and the succeeding lower mold (21), the upper mold unit (10) descends to the lower mold unit (20) to proceed with the molding process.

[0091] After the molding process is completed, while the upper mold unit (10) is rising, the suction cup (73b) moves along the first path (L1) to suction material on the preceding lower mold (21) at the second position (P2) of the preceding section (S1), and then moves along the second path (L2) to supply material on the subsequent lower mold (21) at the third position (P3) of the subsequent section (S2).

[0092] Afterwards, while the upper mold unit (10) descends again from the top dead center, the suction cup (73b) moves along the third path (L3) and moves again to the first position (P1) of the evacuation section (ES), and at the same time, the molding process proceeds.

[0093] The behavior pattern of these adsorption cups (73b) is repeated in conjunction with the molding process, and the molding process proceeds as the material is sequentially transported along the 5 lower molds (21) arranged along the process direction.

[0094] In this way, each suction cup (73b) is positioned in the evacuation section (ES) between each lower mold (21), and after the molding process is finished, while the upper mold unit (10) is rising and falling, it sucks up the material and transfers it quickly and accurately from the preceding lower mold (21) to the succeeding lower mold (21). At this time, the position of the upper mold unit (10) is measured in real time by an encoder, and the position of the upper mold unit (10) received from the encoder is calculated by the servo controller of the PLC that automatically controls the press (1), and the feeder (73) is controlled to move along a trajectory that does not interfere with the upper mold (11) and the lower mold (21).

[0095] The behavior pattern of these suction cups (73b) is an optimal pattern calculated by the encoder and servo controller, which enables the material to be transported along the most ideal shortest path (L1, L2, L3) and time.

[0096] In the operation according to the behavior pattern of the adsorption cup (73b) as described above, the lateral (left and right) reciprocating motion is achieved by a lateral slider (51) that moves in the lateral direction according to the rotational control of the first motor (M1). That is, referring to FIGS. 4 and FIGS. 5, the pinion (53) fixed to the rotation axis (M1a) of the first motor (M1) is rotated in both directions, and the rack bar (55) fixed to the lower part of the lateral slider (51) is moved reciprocally in the lateral direction, thereby causing the lateral slider (51) to move in the lateral direction.

[0097] Additionally, the longitudinal (up and down) reciprocating motion is achieved by a longitudinal slider (61) that moves in the longitudinal direction according to the rotational control of the second motor (M2). That is, referring to FIGS. 4 and 5, when the link shaft (63) is driven in both directions by the rotational control of the second motor (M2), the rotation levers (81) configured at both ends of the link shaft (63) are driven in rotation together with the link shaft (63). At this time, the bidirectional rotational drive of the link shaft (63) is transmitted as an up and down driving force to the longitudinal slider (61) through the two link bars (85), causing the longitudinal slider (61) to move in the longitudinal direction relative to the front plate (41).

[0098] At this time, the suction cup (73b) is connected to the feed beam (71) through the feed bar (73a), and receives the lateral and longitudinal movements resulting from the operation of the lateral slider (51) and the longitudinal slider (61) as is.

[0099] That is, the feed beam (71) is installed so as to be movable in the transverse direction on the front of the longitudinal slider (61), and reciprocates in the longitudinal direction together with the longitudinal slider (61), and at the same time, one end is connected to the transverse slider (51) through a longitudinal guide means (90) composed of a guide roller (91) and a guide block (93), so that the longitudinal reciprocating motion by the aforementioned longitudinal slider (61) is guided, and at the same time, reciprocates in the transverse direction together with the transverse slider (51).

[0100] Accordingly, the adsorption cup (73b) installed on the feeder beam (71) moves in the transverse and longitudinal directions along the movement patterns of the first, second, and third paths (L1)(L2)(L3) by the interlocking operation of the transverse slider (51) and the longitudinal slider (61), adsorbing and transporting the material.

[0101] Although preferred embodiments of the present invention have been described above, the present invention is not limited thereto and can be implemented with various modifications within the scope of the claims, the detailed description of the invention, and the attached drawings, and it is obvious that such modifications also fall within the scope of the present invention. Explanation of the symbols

[0102] 1: Multi-stage press 10: Hieroglyphic unit 11: Hieroglyphs 13: Figurative die 15: Guide Post 20: Ha-hyung unit 21: Ha-hyung 23: Ha-hyung-dai 25: Guide Housing 30: Transfer feeding device 40: Frame 41: Front plate 41a: Thick plate 41b: opening 43: If you do, plate 45: Side plate 50: Lateral movement unit 51: Horizontal slider 53: Pinion 55: Rack bar 57: First transverse rail means TR1: 1st transverse rail TB1: 1st transverse rail block M1: 1st motor 60: Longitudinal motion unit 61: Longitudinal slider 63: Link axis 65: Gearbox 67: Longitudinal rail means LR: Longitudinal rail LB: Longitudinal rail block M2: 2nd motor 70: Feed unit 71: Feed Beam 73: Feeder 73a: Feed bar 73b: Suction cup 77: Second transverse rail means TR2: Second transverse rail TB2: 2nd transverse rail block 80: Linking means 81: Rotating lever 83: Joint bar 85: Link Bar 87: Rotating pin 89: Ball joint 90: Longitudinal guide means 91: Guide roller 93: Guide Block 95: Guide Home 97: Roller bracket

Claims

Claim 1 delete Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 delete Claim 7 delete Claim 8 delete Claim 9 delete Claim 10 delete Claim 11 delete Claim 12 delete Claim 13 A transfer feeding device for a multi-stage press configured on one side of a multi-stage press having an upper die unit in which a multi-stage upper die is arranged in the process direction and a lower die unit in which a multi-stage lower die is arranged in the process direction, for sequentially transferring a material supplied to the lower die of the multi-stage press, comprising: a frame installed at the rear of the multi-stage press, comprising a front plate, a lower plate, and two side plates; a lateral movement unit in which a pinion rotated by a first motor installed in the center of the frame is engaged with a rack bar fixed to the lower part of a lateral slider that moves laterally relative to the front plate, and the lateral slider reciprocates laterally relative to the front of the frame by driving the first motor; and a longitudinal movement unit in which a link shaft connected to a second motor installed on one side of the frame via a gearbox is connected to a longitudinal slider that moves longitudinally relative to the front plate via a link means, and the longitudinal slider reciprocates longitudinally relative to the front of the frame by driving the second motor. A transfer feeding device for a multi-stage press comprising: a feed unit having a feed beam fixed to a plurality of feeders for material transfer on its front surface, installed to slide laterally with respect to the front surface of a longitudinal slider, and reciprocating longitudinally together with the longitudinal slider, and simultaneously configured so that the feed beam can move longitudinally along a guide block fixed to a transverse slider through a guide roller fixed to one side, thereby guiding the longitudinal reciprocating motion together with the longitudinal slider while reciprocating transversely together with the transverse slider. Claim 14 A transfer feeding device for a multi-stage press according to claim 13, wherein the frame comprises: a front plate having an opening formed in the transverse direction and positioned opposite the lower die of the multi-stage on the multi-stage press; a lower plate fixed to the lower part of the front plate; and two side plates fixed to each side of the front plate and the lower plate. Claim 15 In claim 13, the lateral movement unit comprises: a first motor installed through a rear plate at the center of the rear of an opening on the front plate of the frame; a lateral slider installed to slide laterally through a first lateral rail means on the front of the rear plate exposed through the opening of the front plate; a pinion installed on the rotation axis of the first motor at the front of the front plate; and a rack bar fixed to the lower part of the lateral slider and engaged with the pinion; a transfer feeding device for a multi-stage press. Claim 16 A transfer feeding device for a multi-stage press according to claim 15, wherein the first transverse rail means comprises: a first transverse rail fixed transversely to the front surface of a rear plate exposed through an opening of the front plate; and a first transverse rail block fixed to each of the rear sides of the transverse slider and installed to slide along the first transverse rail. Claim 17 In claim 13, the longitudinal movement unit comprises: a gearbox installed on one side of the lower plate of the frame; a second motor installed to transmit rotational power to the gearbox; a link shaft installed transversely on the gearbox to receive rotational power from the second motor and rotate, with both sides rotatably installed on the two side plates through bearings; a longitudinal slider installed to slide longitudinally through longitudinal rail means on each front side of the front plate; and a link means connected by a link structure between each side of the link shaft and each rear side of the longitudinal slider to transmit the rotational movement of the link shaft to the longitudinal slider as an up-and-down movement. Claim 18 A transfer feeding device for a multi-stage press according to claim 17, wherein the link means comprises: a rotating lever installed on each side of the link shaft and rotating together with the link shaft; a joint bar installed on both sides of the longitudinal slider facing backward; and a link bar connecting the rotating lever and the joint bar to transmit the rotational movement of the rotating lever to the joint bar as an up-and-down movement through link operation. Claim 19 In claim 18, the above link bar is a transfer feeding device for a multi-stage press, wherein one end is connected to the above-mentioned rotary lever via a rotary pin and the other end is connected to the above-mentioned joint bar via a ball joint. Claim 20 A transfer feeding device for a multi-stage press according to claim 17, wherein the longitudinal rail means comprises: a longitudinal rail fixed longitudinally on both sides of the front of the front plate; and a longitudinal rail block fixed to each side of the rear of the longitudinal slider and installed to be slidably movable along the longitudinal rail. Claim 21 A transfer feeding device for a multi-stage press according to claim 13, wherein the feed unit comprises: a feed beam installed to be slidably movable in the transverse direction through a second transverse rail means on the front of the longitudinal slider; a plurality of feeders installed along the transverse direction on the front of the feed beam to adsorb material and transfer and supply material to the lower die of the multi-stage; and a longitudinal guide means configured such that a guide roller is guided longitudinally along a guide groove of a guide block between the feed beam and the transverse slider, thereby guiding the feed beam to reciprocate longitudinally together with the longitudinal slider and simultaneously reciprocate transversely together with the transverse slider. Claim 22 A transfer feeding device for a multi-stage press according to claim 21, wherein the longitudinal guide means is installed on the front of the transverse slider and comprises: a guide block having a longitudinal guide groove formed on the front; and a guide roller rotatably installed on the rear of the feed beam through a roller bracket and guided longitudinally along the guide groove. Claim 23 A transfer feeding device for a multi-stage press according to claim 21, wherein the feeder comprises: a feed bar positioned along the transverse direction on the front of the feed beam opposite the lower die of the multi-stage and fixed via a fixed bracket; and suction cups each fixed to the leading end of the feed bar and adsorbing a material with a vacuum. Claim 24 A transfer feeding device for a multi-stage press according to claim 21, wherein the second transverse rail means comprises: a second transverse rail fixed transversely on both sides of the rear of the feed beam; and a second transverse rail block fixed to each side of the front of the longitudinal slider and installed to slide along the second transverse rail.

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