Stack moving apparatus and stack moving method

Abstract

The present invention provides a kind of laminated body removal device and laminated body removal method, which is even in the removal process, the thin steel plate in fixed extrusion piece can continue to drop laminated body removal technology.In (a) of Figure 7, the thin steel plate (17) in fixed extrusion piece (42) continues to drop.When the thin steel plate (17 (n)) passes the lower end of the first movable extrusion piece (54), the first movable extrusion piece (54) is closed.In (b) of Figure 7, when the thin steel plate (17 (n)) passes the lower end of the second movable extrusion piece (55), the second movable extrusion piece (55) is closed.In (c) of Figure 7, the laminated body (50) is removed from the support piece (43).During this period, the thin steel plate (17) in fixed extrusion piece (42) and the first movable extrusion piece (54) and the second movable extrusion piece (55) continues to drop.

Description

Technical Field

[0001] This invention relates to a technique for removing laminates made of a specified number of thin steel plates. Background Technology

[0002] Previously, mechanisms for stacking thin workpieces into a laminated state and mechanisms for removing a predetermined number of workpieces from the bottom of the laminate were known. The lamination process is also called stacking, and the predetermined number of workpieces removed is called a laminate.

[0003] A known device applies such technology to a laminate removal apparatus for punching thin steel sheets (e.g., see Patent Document 1). Figure 3 , Figure 4 )).

[0004] The following diagram illustrates patent document 1.

[0005] Figure 8 (a) and (b) are diagrams illustrating the basic principles of existing technology.

[0006] like Figure 8 As shown in (a), the electrical steel sheet 101 is punched by the rising and falling punch 102.

[0007] The punched thin steel plate 103 is stacked on the support platform 104 in a layered state.

[0008] The lead screw shaft 105 rotates synchronously with the punching process, and the support table 104 gradually descends.

[0009] As a result, multiple thin steel plates 103 are stacked on the support platform 104 in a laminated state.

[0010] Although Patent Document 1 does not explicitly describe stopping the descent of the thin steel plate 103, the descent of the thin steel plate 103 is stopped before the pusher 108 is moved forward. Then, the clamp 107 is moved forward.

[0011] like Figure 8 As shown in (b), the thin steel plate 103A located at a specified height is clamped with clamp 107 (A is an additional mark used to define the location).

[0012] In this state, the laminate 109 is removed by pusher 108.

[0013] Thus, the stacked body 109 is removed from the bottom of the multiple thin steel plates 103 that are piled up.

[0014] The pusher 108 returns. Next, the lead screw 105 is rotated so that the support platform 104 abuts against the thin steel plate 103A. Then, the clamp 107 is opened.

[0015] Next, the descent of the thin steel sheets 103 is started again, and the thin steel sheets 103 are returned Figure 8 (a) of FIG. 1.

[0016] However, in the technology of Patent Document 1, there are items to be improved. The items to be improved are listed below.

[0017] First, during the period in which the stack 109 is moved out with the pusher 108, the descent of the thin steel sheets 103 is stopped, and thus the productivity is reduced.

[0018] In addition, as shown in (b) of FIG. 1, since the thin steel sheet 103A is restrained by the clamp 107, the lateral movement is not a problem. However, the thin steel sheet 103 present above the thin steel sheet 103A can laterally move. Figure 8

[0019] However, in Patent Document 1, the thin steel sheets 103 are joined to each other by riveting (kashime), and the degree of lateral movement is slight.

[0020] In recent years, as a method instead of riveting, the thin steel sheets 103 are joined to each other by an adhesive.

[0021] In the case of the adhesive, since the prescribed adhesive strength is obtained by heating (or pressurization) performed after the movement out, at the time of the movement out, the thin steel sheet 103 present above the thin steel sheet 103A is highly likely to laterally move.

[0022] As a countermeasure, a process of arranging the thin steel sheets after the movement out and before the heating (or pressurization) is added.

[0023] However, if the arrangement process is added, a device for the arrangement process is added, and the device cost increases.

[0024] In recent years, in a process in which the productivity is required to be improved, there is a strong demand for a stack movement-out technology in which the thin steel sheets in the fixed press are gradually continued to descend even during the movement-out process, and the thin steel sheets are not worried about the lateral movement during the stacking process.

[0025] Patent Document 1: Japanese Patent Application Publication No. 2005-334893 SUMMARY

[0026] The present application has an object to provide a stack movement-out technology in which the thin steel sheets in the fixed press are gradually continued to descend even during the movement-out process, and the thin steel sheets are not worried about the lateral movement during the stacking process.

[0027] The present inventors, in the course of studying the technology of continuing the descent of the thin steel sheets, focused on the fact that a weak joining force caused by surface tension is present in the adhesive before the curing process, and considered whether or not the continuation can be achieved by the focus. In order to verify this idea, it was determined to perform an experiment. According to the experiment,​Figure 1 Explain the contents of the experiment.

[0028] Furthermore, in the following description, for the laminated thin steel plate 17, when distinguishing the height position, as with thin steel plates 17(1) and 17(n), (1) to (n) are added to thin steel plate 17. Of course, thin steel plates 17(1) to 17(n) are the same as thin steel plate 17.

[0029] like Figure 1 As shown in (a), a thin steel plate 17 is laminated, and the second thin steel plate 17 (2) from the bottom is clamped by clamps 18. According to the experiment, the thin steel plate 17 (1) did not fall.

[0030] A thermosetting adhesive is applied to the thin steel sheet 17. The adhesive (although before curing) has surface tension. We believe this is because the surface tension between the thin steel sheet 17(1) and the thin steel sheet 17(2) is greater than the weight of the thin steel sheet 17(1).

[0031] like Figure 1 As shown in (b), the fourth sheet of steel 17 (4) from the bottom is clamped. The load (total weight of the sheet of steel 17 (1) to 17 (3)) acts between the third sheet of steel 17 (3) from the bottom and the fourth sheet of steel 17 (4) from the bottom. However, the sheet of steel 17 (1) to 17 (3) does not fall.

[0032] like Figure 1 As shown in (c), the sixth thin steel plate 17(6) from the bottom is clamped. Then, the thin steel plates 17(1) to 17(5) fall.

[0033] We believe that the load (total weight of the thin steel plates 17(1) to 17(5) is greater than the surface tension between the thin steel plates 17(5) and 17(6).

[0034] In addition, thin steel plates 17 are often mechanically joined by riveting.

[0035] In this case, temporary riveting is performed during the lamination process, and formal riveting is performed in a later process. In the temporary riveting, the thin steel plates 17 are joined together with weak force.

[0036] exist Figure 1 In (b) and (c), although the number of thin steel plates 17 under clamp 18 varies by one or two sheets, the result is the same as in the case of temporary riveting. Figure 1 The same results were obtained for (a) to (c).

[0037] In summary, the inventors have discovered that if upon arrival Figure 1 Before (c), that is, before Figure 1 (a) toFigure 1 If the removal is completed between (b), the thin steel sheet 17 can be allowed to continue to descend, and based on this finding, the following invention was completed.

[0038] That is, Technical Solution 1 is a layered body removal device characterized by comprising: a fixed presser having a guide hole for housing and guiding a thin steel sheet in a stacked state and gradually descending at a low speed; a support for receiving the thin steel sheet in the stacked state; a support lift mechanism for lifting the support by switching between a low speed and a high speed; a push-out mechanism for removing a layered body of a prescribed number of the thin steel sheets stacked on the support; and a control unit for controlling the support lift mechanism and the push-out mechanism,

[0039] The thin steel sheets are weakly joined to each other by an adhesive before curing or a temporary rivet before formal riveting,

[0040] The layered body removal device further comprises a movable presser below the fixed presser and a presser opening and closing mechanism for opening and closing the movable presser,

[0041] The movable presser has a lower guide hole having the same diameter as that of the guide hole when closed,

[0042] The shaft length of the movable presser is set to be greater than the descending distance of the thin steel sheet descending from the fixed presser during removal of the layered body,

[0043] The control unit is configured to perform the following control: when the thin steel sheet on the support passes through the fixed presser by a prescribed number, start high-speed descent of the support, when the layered body on the support passes through the movable presser, close the movable presser and remove the layered body, and then start high-speed ascent of the support, and when the support hits the thin steel sheet inside the movable presser, open the movable presser.

[0044] Technical solution 2 provides a method for removing a laminated body, characterized by the following steps: preparing: multiple thin steel plates, which are weakly joined by an adhesive before curing or by temporary riveting before formal riveting; a fixed extruder having guide holes for receiving and guiding the thin steel plates in a laminated state as they gradually descend at a low speed; a support for receiving the laminated thin steel plates; a support lifting mechanism for switching between low and high speeds to lift the support; an ejection mechanism for removing the laminated body from the support when a specified number of the laminated thin steel plates are stacked together; a movable extruder disposed below the fixed extruder; and an extruder opening and closing mechanism for opening and closing the movable extruder.

[0045] When the thin steel plates on the support member pass through the fixed extruder in a predetermined number, the support member begins to descend at high speed. When the laminate on the support member passes through the movable extruder, the movable extruder is closed and the laminate is removed. Then, the support member begins to rise at high speed. When the support member touches the thin steel plates inside the movable extruder, the movable extruder is opened, thereby removing the laminate while the thin steel plates inside the fixed extruder continue to descend.

[0046] Technical solution 3 provides a method for removing a laminated body, characterized by the following steps: preparing: multiple thin steel plates, which are weakly joined by an adhesive before curing or by temporary riveting before formal riveting; a fixed extruder having guide holes for receiving the thin steel plates in a laminated state and guiding them to descend slowly; a support for receiving the laminated thin steel plates; a support lifting mechanism for raising and lowering the support; an ejection mechanism for removing the laminated body from the support when a specified number of the laminated thin steel plates are stacked together; a movable extruder disposed below the fixed extruder; an extruder opening and closing mechanism for opening and closing the movable extruder; and a control unit for controlling the support lifting mechanism and the ejection mechanism.

[0047] The control unit is used to perform the following control: closing the movable extruder during the period when the thin steel plate protruding downward from the fixed extruder is suspended in the fixed extruder by the engagement action, and removing the laminate during the period when the movable extruder is closed.

[0048] Technical solution 4 is a laminate removal device, characterized by comprising: a fixed extrusion member having a guide hole for receiving and guiding thin steel plates in a laminated state as they gradually descend at a low speed; a support member for receiving the laminated thin steel plates; a support member lifting mechanism for switching between low and high speeds to lift the support member; an ejection mechanism for removing the laminate from the support member when a predetermined number of the laminated thin steel plates are stacked together; and a control unit for controlling the support member lifting mechanism and the ejection mechanism.

[0049] The thin steel plates are weakly joined together by an adhesive before curing or by temporary riveting before formal riveting.

[0050] The laminate removal device further includes a first movable extruder and a first extruder opening and closing mechanism for opening and closing the first movable extruder below the fixed extruder.

[0051] The first movable pressing member has a first guide hole with the same diameter as the guide hole when closed.

[0052] The laminate removal device further includes a second movable extruder below the first movable extruder and a second extruder opening / closing mechanism for opening and closing the second movable extruder. When closed, the second movable extruder has a second guide hole with the same diameter as the first guide hole.

[0053] The sum of the shaft lengths of the first movable extruder and the second movable extruder is set to be greater than the descent distance of the thin steel sheet as it descends from the fixed extruder during removal from the laminate.

[0054] The control unit is used to perform the following control: when the thin steel plates on the support member pass through the fixed extruder in a predetermined number, the support member begins to descend at high speed; when the laminate on the support member passes through the first movable extruder, the first movable extruder is closed; when the laminate on the support member passes through the second movable extruder, the second movable extruder is closed and the laminate is removed; then the support member begins to rise at high speed; when the support member touches the thin steel plates inside the second movable extruder, the first movable extruder and the second movable extruder are opened.

[0055] In technical solution 1, by having a movable extrusion member and using an extrusion member opening and closing mechanism to open and close the movable extrusion member, the thin steel plate inside the fixed extrusion member can continue to gradually descend. Furthermore, lateral movement of the laminated thin steel plate, i.e., the thin steel plate during the stacking process, within the guide holes of the fixed extrusion member is suppressed.

[0056] Therefore, according to technical solution 1, a laminate removal device is provided, which can make the thin steel plate inside the fixed extrusion part continue to descend gradually even during the removal process, and there is no need to worry about the thin steel plate moving laterally during the stacking process.

[0057] According to technical solution 2, the thin steel sheet within the fixed extruder can continue its gradual descent. Furthermore, it prevents the laminated thin steel sheet, i.e., the thin steel sheet during the stacking process, from moving laterally within the guide holes of the fixed extruder.

[0058] Therefore, according to technical solution 2, a method for removing a laminate is provided, which allows the thin steel plate inside the fixed extruder to continue to descend gradually even during the removal process, without worrying about the lateral movement of the thin steel plate during the stacking process.

[0059] According to technical solution 3, the control unit closes the movable extruder while the thin steel plate protruding downwards from the fixed extruder is suspended on the thin steel plate inside the fixed extruder due to the engagement action, and removes the stacked body during the closing of the movable extruder. This method allows the thin steel plate inside the fixed extruder to continue its descent. Furthermore, it suppresses lateral movement of the stacked thin steel plate within the guide holes of the fixed extruder during the stacking process.

[0060] Therefore, according to technical solution 3, a method for removing a laminate is provided, which allows the thin steel plate inside the fixed extruder to continue to descend gradually even during the removal process, without worrying about the lateral movement of the thin steel plate during the stacking process.

[0061] In technical solution 4, a first movable extruder and a second movable extruder are included. The first and second movable extruders are opened and closed by an opening and closing mechanism, thereby enabling the thin steel plate inside the fixed extruder to continue its gradual descent. Furthermore, lateral movement of the laminated thin steel plate, i.e., the thin steel plate during the stacking process, within the guide hole of the fixed extruder is suppressed.

[0062] Therefore, according to technical solution 4, a laminate removal device is provided, which can make the thin steel plate inside the fixed extrusion part continue to descend gradually even during the removal process, and there is no need to worry about the thin steel plate moving laterally during the stacking process.

[0063] Technical solution 4 is suitable for situations where the number of thin steel sheets constituting the laminate is relatively large. That is, for the movable extruder in technical solution 1, the movable extruder cannot be closed before the entire laminate is detached. During this period, the number of thin steel sheets protruding from the fixed extruder increases, and the risk of the protruding thin steel sheets falling increases.

[0064] Regarding this point, in technical solution 4, when the laminated body detaches from the first movable extruder, which has a smaller height dimension than the movable extruder in technical solution 1, the first movable extruder can be closed, and the protruding thin steel plate will not fall. Attached Figure Description

[0065] Figure 1 Figures (a) to (c) illustrate the experiments involved in this invention.

[0066] Figure 2 This is a schematic diagram of a motor core manufacturing apparatus that includes the laminate removal device involved in this invention.

[0067] Figure 3 This is a cross-sectional view of the main part of the laminate removal device involved in this invention.

[0068] Figure 4 Figures (a) to (d) illustrate the removal method.

[0069] Figure 5 Figures (a) to (c) illustrate the removal method.

[0070] Figure 6 This is a diagram illustrating a modified example of the laminate removal device.

[0071] Figure 7 Figures (a) to (c) illustrate the removal method for the modified example.

[0072] Figure 8 (a) and (b) are diagrams illustrating the basic principles of existing technology. Detailed Implementation

[0073] The embodiments of the present invention will now be described with reference to the accompanying drawings. Furthermore, in the following description, "elongation movement" refers to extending the overall length of the cylinder, and "contraction movement" refers to shortening the overall length of the cylinder.

[0074] [Example]

[0075] The laminate removal device 40 involved in this invention is, for example, attached to the electric motor core manufacturing apparatus 10.

[0076] like Figure 2 As shown, the electric motor core manufacturing apparatus 10 consists of an adhesive coating mechanism 11, a punching device 20, a laminate removal device 40, and a control unit 60. The structure and function of these mechanisms or devices will be described in detail below.

[0077] The adhesive coating mechanism 11 consists of, for example, a cylindrical coating gun 12 and a gun lifting cylinder 13 that raises and lowers the coating gun 12, and applies an appropriate amount of thermosetting adhesive (or pressure-curing adhesive) to a specified portion of the strip-shaped thin steel plate 15.

[0078] In addition, in this embodiment, the following measures are taken to prevent the thin steel plate 17 from adhering to the support member 43.

[0079] For thin steel plates ( Figure 1 (See attached figure 17(1)). The coating gun 12 is lowered to the position indicated by the virtual line, and no coating is applied. For other thin steel sheets (… Figure 1 (Starting from the thin steel plate marked 17(2) in the attached figure), the coating gun 12 is returned to coat the lower surface.

[0080] The blanking device 20 has a base 21, a lower die 22 placed on the base 21, an upper die 23 arranged above the lower die 22, a stamping plate 24 supporting the upper die 23, and a stamping cylinder 25 that raises and lowers the stamping plate 24 and presses the upper die 23 onto the strip of thin steel plate 15 placed on the lower die 22 as its basic elements.

[0081] The thickness of the strip steel sheet 15 is, for example, 0.25 mm.

[0082] Additionally, for ease of understanding, the illustration is omitted, but the strip-shaped thin steel plate 15 is supported and pushed upward by pins configured to avoid contact with the upper surface of the lower mold 22 during material movement. For more reliable upward pushing, a plate-shaped component can also be used for support. In this case, ribbed grooves are provided on the upper surface of the plate-shaped component to avoid contact with the adhesive dots.

[0083] An inner peripheral punch 26, a plurality of magnetic hole punches 27 surrounding the inner peripheral punch 26, and an outer peripheral punch 28 are provided on the lower surface of the upper mold 23.

[0084] On the lower die 22, there are waste discharge holes 31 and 32 below the inner circumferential punch 26 and below the magnetic hole punch 27.

[0085] A waste conveyor 33 is installed below the waste discharge holes 31 and 32. The waste 34 and 35 generated in the punching process fall through the waste discharge holes 31 and 32 and are discharged to the outside of the device by the waste conveyor 33.

[0086] A thin steel sheet 17 is formed by punching with the outer peripheral punch 28. The thin steel sheet 17 is lowered in a state where it is placed on the previously punched thin steel sheet 17.

[0087] At this point, the peripheral plunger 28 repeatedly descends → stops at the lower dead center → rises → stops at the upper dead center → descends again… One cycle of the peripheral plunger 28 is approximately 0.25 seconds.

[0088] The thin steel plate 17 descends from the middle of its descent (when the outer peripheral punch 28 touches the strip thin steel plate 15) to its stop at the lower dead center, and stops between rising → stopping at the upper dead center → descending.

[0089] Therefore, the thickness of the thin steel plate 17 gradually decreases in the laminated state.

[0090] In addition, the thin steel plate 17 descends gradually in sync with the movement of the outer peripheral punch 28, but the thin steel plate 17 can also be supplied by other feeders (supply mechanisms) and the thin steel plate can be descended by pressing down intermittently or continuously with a pressing mechanism.

[0091] Therefore, gradual descent includes both cases of descent due to continuous intermittent movement and cases of completely continuous descent.

[0092] like Figure 3 As shown, the laminate removal device 40 includes: a cylindrical fixed extruder 42 having a guide hole 41 for receiving and guiding the thin steel plate 17 in a laminated state as it gradually descends at a low speed; a tray-shaped support 43 for receiving the laminated thin steel plate 17; a support lifting mechanism 44 for switching the support 43 between low and high speeds to lift it; a movable extruder 45 disposed below and connected to the fixed extruder 42; a support mold 46 for horizontally supporting the movable extruder 45; and an extruder opening and closing mechanism 47 for opening and closing the movable extruder 45.

[0093] Furthermore, the movable extruder 45 is more preferably configured to have a small gap between it and the fixed extruder 42. Without the gap, if the movable extruder 45 is opened or closed, it will slide on the fixed extruder 42, which may cause wear or deterioration of the movement of the movable extruder 45.

[0094] By setting a gap, it is possible to prevent slippage and wear, and to maintain the movement of the movable extrusion part 45.

[0095] In addition, the axial length (height) of the movable extruder 45 is set to be greater than the descent distance of the thin steel plate 17 that descends from the fixed extruder 42 during the removal of the laminate 50. Figure 5 (b) (Figure H).

[0096] Furthermore, the movable extruder 45 moves to the position indicated by the virtual line when closed, thereby forming a lower guide hole 48 with the same diameter as the guide hole 41.

[0097] The extrusion opening and closing mechanism 47 is preferably a cylinder. In the cylinder's structure, the piston stops at its forward limit position and its backward limit position. The forward limit position can be...Figure 3 The positions of the virtual lines shown are consistent. If the piston is retracted, the movable extruder 45 opens and stops upon contact with the supporting mold 46. That is, it stops between the forward and backward limits during retraction. Therefore, if it is a pneumatic cylinder, no special position control is required to open and close the movable extruder 45. The same applies to hydraulic cylinders.

[0098] Thus, the extrusion opening and closing mechanism 47 can be a pneumatic cylinder, a hydraulic cylinder, or even an electric cylinder. However, the extrusion opening and closing mechanism 47 can be any mechanism that moves the movable extrusion 45, and it can also be a connecting rod or rack and pinion driven by an electric motor; the type and structure are arbitrary.

[0099] like Figure 2 As shown, the support member lifting mechanism 44 generally performs a low-speed descent when the thin steel plate 17 is stacked (layered) inside the fixed extruder 42, a high-speed descent just before it is removed, a stop during the removal process, and a high-speed ascent after removal. That is, the support member 43 is raised and lowered by switching between low speed and high speed.

[0100] The raising of the support 43 is controlled by a proximity sensor described later, or the method described below is recommended.

[0101] For example, the amount of movement of the strip of thin steel plate 15 is monitored by counter 61.

[0102] The control unit 60 determines the number of thin steel sheets 17 during the stacking (lamination) process based on the movement information from the counter 61. Based on this information, it calculates the height position of the thin steel sheets 17 as they descend within the fixed extruder 42.

[0103] Based on the calculation information, the rising position of the support member 43 is determined, and the support member 43 is raised to the determined rising position.

[0104] Because precise position control of the support member 43 is required, the support member lifting mechanism 44 is preferably a servo-controlled hydraulic servo cylinder. A pneumatic servo cylinder is also suitable. Alternatively, an electric servo cylinder with a built-in ball screw and driven by an electric servo motor can also be used.

[0105] However, in addition to servo cylinders, the support lifting mechanism 44 can also be a connecting rod or pinion rack driven by an electric servo motor, and the type and structure are arbitrary.

[0106] In addition, such as Figure 2 As shown, when an article formed by stacking a specified number of thin steel plates 17 is called a stack 50, the stack removal device 40 includes: a push-out mechanism 51 for horizontally pushing out and removing the stack 50; and a discharge conveyor 52 for discharging the removed stack 50.

[0107] The control unit 60 also controls the support member lifting mechanism 44 and the push-out mechanism 51.

[0108] Since the ejection mechanism 51 can determine the forward limit position based on the position of the discharge conveyor 52 and the backward limit position based on the position of the support member 43, a pneumatic or hydraulic cylinder is preferred.

[0109] In addition to pneumatic cylinders and hydraulic cylinders, electric cylinders can also be used for the ejection mechanism 51. However, the ejection mechanism 51 can be any mechanism that moves the laminate 50 horizontally, and it can also be a push rod, connecting rod, or rack and pinion driven by an electric motor. The type and structure are arbitrary.

[0110] Next, according to Figure 4 and Figure 5 This section explains the detailed operation method of the laminate removal device 40.

[0111] exist Figure 4 In (a), the movable extruder 45 is opened. A support 43 is located within the movable extruder 45. The thin steel plate 17 gradually descends within the fixed extruder 42 in a laminated state.

[0112] Thin steel sheets 17 are laminated into a stack 50 in a specified number of sheets n. The specified number of sheets n is, for example, 50 to 200.

[0113] exist Figure 4 In (b), the movable extrusion member 45 opens. The thin steel plate 17(n) passes through the lower end of the fixed extrusion member 42. Based on this passage information, the descent speed of the support member 43 is switched from low speed to high speed, and high-speed descent begins.

[0114] Since the upper surface of the thin steel plate 17(n) is not coated with adhesive and the lower surface of the thin steel plate 17(1) thereon is not coated with adhesive, the thin steel plate 17(n) leaves the thin steel plate 17(1).

[0115] exist Figure 4 In (c), the movable extruder 45 opens. The thin steel plate 17(n) continues to move within the movable extruder 45. During this time, the thin steel plate 17 within the fixed extruder 42 continues to descend. Therefore, the lowermost thin steel plate 17(1) within the fixed extruder 42 protrudes downward from the fixed extruder 42, followed by the thin steel plate 17(2) above it protruding downward from the fixed extruder 42.

[0116] and Figure 1 Similarly to (a) and (b), an adhesive is provided between the thin steel plate 17(1) and the thin steel plate 17(2) thereon. Due to the surface tension of the adhesive, the thin steel plate 17(1) is adhered to the thin steel plate 17(2) without falling off.

[0117] exist Figure 4 In (d), after the thin steel plate 17(n) passes the lower end of the movable extruder 45, the movable extruder 45 is closed based on the passing information.

[0118] The thin steel plate 17 within the fixed extruder 42 and the movable extruder 45 is gently stopped within them due to friction, and therefore will not fall. In this state, the thin steel plate 17 gradually continues to descend.

[0119] Support 43 descends to its lowest position (removable position).

[0120] exist Figure 5 In (a), the laminate 50 is removed from the support 43. The movable extruder 45 closes. During this period, the thin steel plate 17 within the fixed extruder 42 and the movable extruder 45 continues to descend.

[0121] Make the launching mechanism ( Figure 2 (See attached figure 51) performs a retracting movement, and then the support lifting mechanism ( Figure 2 (See attached figure, reference numeral 44) The support member 43 begins to rise rapidly based on the contraction motion information from the ejection mechanism. During this period, the thin steel plate 17 within the fixed extrusion member 42 and the movable extrusion member 45 also gradually continues to descend.

[0122] exist Figure 5 In (b), the movable extrusion member 45 is closed. At the moment when the support member 43 contacts the thin steel plate 17(1) inside the movable extrusion member 45, the support member lifting mechanism stops. Figure 2 (See attached figure 44).

[0123] Specifically, the support member 43 is configured as a structure with two overlapping sheets, and a proximity sensor is provided between the two support members 43. When the support member 43 touches the thin steel plate 17(1), the two overlapping plates contact (or approach each other), and the proximity sensor detects this situation. The proximity sensor can be a load sensor.

[0124] Based on the detection information from the proximity sensor or load sensor, the control unit ( Figure 2 (See attached figure, reference numeral 60) Stop support lifting mechanism ( Figure 2 (See attached figure 44).

[0125] Or, the control department ( Figure 2 (See attached figure, reference numeral 60) based on the counter ( Figure 2 The information in the attached figure (reference numeral 61) is used to calculate the number of thin steel plates 17 in the fixed extruder 42 and the movable extruder 45, and to calculate the height of the bottom thin steel plate 17 (1), and the contact height of the support member 43, thereby controlling the lifting mechanism of the support member ( Figure 2(See attached figure 44) to control the position of the support member 43.

[0126] At the moment when the support member 43 touches the thin steel plate 17 (1), dozens of thin steel plates 17 protrude from the fixed extrusion member 42, but they do not fall due to the presence of the movable extrusion member 45. That is, the closed movable extrusion member 45 serves to prevent the dozens of thin steel plates 17 protruding from the fixed extrusion member 42 from falling.

[0127] Therefore, the shaft length (height) of the movable extruder 45 is set to be greater than that of the part from which the shaft is extended. Figure 4 (c)→ Figure 4 (d)→ Figure 5 (a)→ Figure 5 The descent distance H of the thin steel plate 17 up to (b).

[0128] Based on the information that the support member 43 has come into contact with the thin steel plate 17 (1), the movable pressing member 45 is opened. At the same time, the slow descent of the support member 43 begins (restarts).

[0129] exist Figure 5 In (c), the movable extrusion member 45 opens, and the support member 43 continues to descend at a low speed in sync with the laminated thin steel plate 17.

[0130] Should Figure 5 (c) shows Figure 4 (a) and Figure 4 (b) The intermediate operation.

[0131] This will be repeated in the future. Figure 4 (b)→ Figure 4 (c)→ Figure 4 (d)→ Figure 5 (a)→ Figure 5 (b)→ Figure 5 (c)→ Figure 4 (b)……

[0132] for Figure 4 , Figure 5 The methods of action described can be summarized as follows.

[0133] The control unit 60 pre-opens the movable extruder 45, and after the thin steel plates 17 on the support member 43 pass through the fixed extruder 42 in a predetermined number of sheets ( Figure 4 (b)) The support member 43 began to descend rapidly. Figure 4 (c)). After the laminate 50 on the support 43 passes through the movable extruder 45, the movable extruder 45 is closed. Figure 4 (d)

[0134] Remove the stacked body 50 ( Figure 5(a)), then the support member 43 begins to rise rapidly, causing the support member 43 to contact the thin steel plate 17 (1) inside the movable extrusion member 45. Figure 5 (b)

[0135] After the support 43 touches the thin steel plate 17 (1), the movable pressing member 45 ( Figure 5 (c)).

[0136] These series of operations are controlled by the control unit 60. The result is as follows: Figure 4 and Figure 5 As shown, the laminate 50 can be removed without stopping the thin steel sheet 17 that is gradually descending in the fixed extruder 42, thereby increasing the amount removed and improving productivity.

[0137] Alternatively, the method involved in this invention can be summarized as follows.

[0138] The control unit 60 closes the movable extrusion member 45 during the period when the thin steel plate 17 protruding downward from the fixed extrusion member 42 is suspended on the thin steel plate 17 inside the fixed extrusion member 42 due to the engagement action. Figure 4 (c) and (d)) during the closing of the movable extruder 45, the laminate 50 is removed. Figure 5 (a)

[0139] As a result, Figure 4 and Figure 4 As shown, the laminate 50 can be removed without stopping the thin steel sheet 17 that is gradually descending in the fixed extruder 42, thereby increasing the amount removed and improving productivity.

[0140] In addition, such as Figure 6 As shown in (d), after the thin steel plate 17, which is equivalent to the amount of the laminate 50, is completely detached from the movable extruder 45, the movable extruder 45 is closed.

[0141] When n is 200, Figure 3 In (c), the number of thin steel plates 17 protruding from the fixed extruder 42 is four times the number of plates when n is 50.

[0142] Because the stamping speed (Shots Per Minute) is fast and the descent speed of the support 43 is slow, the more the number of protruding thin steel plates 17 increases, the more the weight of the protruding thin steel plates 17 increases, and the higher the risk that the increased weight will exceed the surface tension of the adhesive.

[0143] In addition, depending on the type of adhesive and the structure of the temporary riveting, the bonding strength may be weaker than intended, increasing the risk that the increased self-weight may exceed the bonding strength.

[0144] according to Figure 6Provide examples of changes that can eliminate these risks.

[0145] In the example of the change, a horizontal line is used to... Figure 6 The movable extrusion part is divided into upper and lower sections at 45 degrees. That is, as shown... Figure 3 As shown, it is divided into a first movable extruder 54 disposed below the fixed extruder 42 with a small gap and a second movable extruder 55 disposed below the first movable extruder 54 with a small gap.

[0146] The height of the first movable extruder 54 is 0.2 to 0.5 times the height of the movable extruder 45, and the height of the second movable extruder 55 is 0.5 to 0.8 times the height of the movable extruder 45.

[0147] In order to enable the first movable extrusion member 54 and the second movable extrusion member 55 to open and close independently, a first extrusion member opening and closing mechanism 56 is connected to the first movable extrusion member 54, and a second extrusion member opening and closing mechanism 57 is connected to the second movable extrusion member 55.

[0148] When closed, the first movable pressing member 54 can form a first guide hole 58 with the same diameter as the guide hole 41.

[0149] Similarly, when closed, the second movable pressing member 55 can form a second guide hole 59 with the same diameter as the first guide hole 58.

[0150] because Figure 3 Other structures shown and Figure 4 Same, therefore misappropriated Figure 4 The accompanying diagrams are labeled, but detailed structural descriptions are omitted.

[0151] The following explains the function of the change example.

[0152] Although the movable extrusion member 45 is divided into a first movable extrusion member 54 and a second movable extrusion member 55, in this respect... Figure 5 of (a), Figure 5 (b) Figure 4 (b) and Figure 4 In (c), the first movable extruder 54 and the second movable extruder 55 are in the open or closed position together, and therefore have the same function.

[0153] because Figure 5 (c) Figure 7 (d) and Figure 7 The function of (a) is different, therefore based on Figure 7 (a) to (c) illustrate different functions.

[0154] exist Figure 7In (a), the first movable extruder 54 and the second movable extruder 55 open. The thin steel plate 17 inside the fixed extruder 42 continues to descend.

[0155] After the thin steel plate 17(n) passes the lower end of the first movable extruder 54, the first movable extruder 54 is closed according to the passing information.

[0156] exist Figure 2 In (b), the first movable extruder 54 is closed and the second movable extruder 55 is open.

[0157] The thin steel plates 17(1) and 17(2) protruding from the fixed extruder 42 continue to descend while being guided by the first movable extruder 54.

[0158] After the thin steel plate 17(n) passes the lower end of the second movable extruder 55, the second movable extruder 55 is closed according to the passing information.

[0159] Support 43 descends to its lowest position (removable position).

[0160] exist Figure 2 In step (c), the laminate 50 is removed from the support member 43. The first movable extruder 54 and the second movable extruder 55 are closed. During this period, the thin steel plate 17 within the fixed extruder 42, the first movable extruder 54, and the second movable extruder 55 continues to descend.

[0161] Make the launching mechanism ( Figure 5 (See attached figure 51) performs a retracting movement, and then the support lifting mechanism ( Figure 4 (See attached figure, reference numeral 44) The support member 43 begins a high-speed elongation movement based on the contraction movement information from the ejection mechanism. During this period, the thin steel plate 17 within the fixed extrusion member 42, the first movable extrusion member 54, and the second movable extrusion member 55 gradually continues to descend. The following continues... Figure 7 (b)

[0162] That is, in the change example, it is repeated. Figure 7 (b)→ Figure 7 (a)→ Figure 5 (b)→ Figure 5 (c)→ Figure 4 (b)→ Figure 7 (c)→ ​ (b)→ ​ (a)……

[0163] In the modified example, the first movable extruder 54 can be closed immediately after the thin steel plate 17(n) passes through the first movable extruder 54.

[0164] Therefore, the modified example has the advantage of reducing the number of protruding thin steel plates 17 that may fall due to their own weight.

[0165] In this modified example, the movable extrusion member 45 is divided into two parts, but it can also be divided into three or more parts if necessary.

[0166] In addition, the stacked body removal technology of the present invention is applicable to the manufacturing technology of electric motor cores, but it can also be applied to other mechanisms for stacking workpieces / removing workpieces, and its application is not particularly limited.

[0167] In addition, the thin steel sheet and the thin steel sheet above it are weakly bonded by thermosetting adhesives, pressure-curing adhesives or temporary riveting, but the bonding can also be done with rust-preventive resins, rust-preventive oils, cosmetic coatings or others, as long as it plays a weak bonding role in the removal of the laminate.

[0168] Riveting includes extremely thin cases where the plate thickness is less than 0.20 mm.

[0169] The adhesive can be an anaerobic adhesive. This is because even anaerobic adhesives do not fully cure during lamination. Additionally, the adhesive may contain a delayed-curing accelerator that does not fully cure during lamination.

[0170] Industrial availability

[0171] The laminate removal technology of the present invention is applicable to the manufacturing technology of electric motor cores.

[0172] Explanation of reference numerals in the attached figures

[0173] 17...thin steel plate

[0174] 40...Laminated body removal device

[0175] 41……Guide Hole

[0176] 42……Fixed extrusion component

[0177] 43……Supporting components

[0178] 44……Support component lifting mechanism

[0179] 45……Modible extrusion part

[0180] 47……Extrusion component opening and closing mechanism

[0181] 48……bottom guide hole

[0182] 50...Layered bodies

[0183] 51... Launching Institution

[0184] 54……First movable extrusion piece

[0185] 55……Second movable extrusion piece

[0186] 56……First extrusion component opening and closing mechanism

[0187] 57……Second extrusion component opening and closing mechanism

[0188] 58……First guide hole

[0189] 59……Second guide hole

[0190] 60……Control Department

[0191] H...the descent distance of the thin steel plate

Claims

1. A device for removing a laminated body, characterized in that, Possess: fixed extrusion piece, with guide hole, this guide hole is used to receive thin steel sheet in the state of accumulation and guide the thin steel sheet gradually descending at low speed; support piece, for receiving the thin steel sheet in the state of accumulation; Support piece lifting mechanism, for switching the support piece between low speed and high speed to lift; push out mechanism, when the article stacked by the thin steel sheet of specified number is called stack, the push out mechanism is used to remove the stack on the support piece; and control unit, for controlling the support piece lifting mechanism and the push out mechanism, The thin steel sheets are weakly joined to each other by the adhesive before curing treatment or the temporary riveting before formal riveting, The stack removal device further possesses movable extrusion piece and extrusion piece opening and closing mechanism for opening and closing the movable extrusion piece below the fixed extrusion piece, The movable extrusion piece has lower guide hole with the same diameter as the diameter of the guide hole when closing, The shaft length of the movable extrusion piece is set to be greater than the descending distance of the thin steel sheet descending from the fixed extrusion piece during the removal of the stack, The control unit is used to control: when the thin steel sheet on the support piece passes through the fixed extrusion piece by the specified number, start the high speed descending of the support piece, when the stack on the support piece passes through the movable extrusion piece, close the movable extrusion piece, and remove the stack, then start the high speed ascending of the support piece, when the support piece hits the thin steel sheet in the movable extrusion piece, open the movable extrusion piece.

2. A method of removing a laminate, characterized by Preparation: multiple thin steel sheets weakly joined by the adhesive before curing treatment or the temporary riveting before formal riveting; fixed extrusion piece, with guide hole, this guide hole is used to receive these thin steel sheets in the state of accumulation and guide the thin steel sheet gradually descending at low speed; Support piece, for receiving the thin steel sheet in the state of accumulation; support piece lifting mechanism, for switching the support piece between low speed and high speed to lift; push out mechanism, when the article stacked by the thin steel sheet of specified number is called stack, the push out mechanism is used to remove the stack on the support piece; movable extrusion piece, arranged below the fixed extrusion piece; and extrusion piece opening and closing mechanism, for opening and closing the movable extrusion piece, When the thin steel sheet on the support piece passes through the fixed extrusion piece by the specified number, start the high speed descending of the support piece, when the stack on the support piece passes through the movable extrusion piece, close the movable extrusion piece, and remove the stack, then start the high speed ascending of the support piece, when the support piece hits the thin steel sheet in the movable extrusion piece, open the movable extrusion piece, so as to continue the removal of the stack while the descending of the thin steel sheet in the fixed extrusion piece.

3. A method of removing a laminate, characterized by, Preparation: a plurality of thin steel sheets weakly joined by an adhesive before curing treatment or temporary riveting before formal riveting; a fixed presser having a guide hole for receiving the thin steel sheets in a stacked state and guiding the thin steel sheets gradually descending at a low speed; a support for receiving the thin steel sheets in the stacked state; a support lifting mechanism for lifting the support; a push-out mechanism for removing a stack of the thin steel sheets stacked in a prescribed number of sheets, when the stack is referred to as a stacker; a movable presser provided below the fixed presser; a presser opening and closing mechanism for opening and closing the movable presser; and a control unit for controlling the support lifting mechanism and the push-out mechanism, the control unit controls to start high-speed descent of the support when the thin steel sheets on the support pass through the fixed presser in a prescribed number of sheets, to close the movable presser during the thin steel sheets protruding downward from the fixed presser are hung on the thin steel sheets in the fixed presser by the joining action, and to remove the stacker during the movable presser is closed.

4. A layered body removal device characterized by comprising: A fixed presser having a guide hole for receiving thin steel sheets in a stacked state and guiding the thin steel sheets gradually descending at a low speed; a support for receiving the thin steel sheets in the stacked state; a support lifting mechanism for lifting the support by switching between a low speed and a high speed; a push-out mechanism for removing a stack of the thin steel sheets stacked in a prescribed number of sheets, when the stack is referred to as a stacker; and a control unit for controlling the support lifting mechanism and the push-out mechanism, the thin steel sheets are weakly joined to each other by an adhesive before curing treatment or temporary riveting before formal riveting, the stacker removing device further includes a first movable presser below the fixed presser and a first presser opening and closing mechanism for opening and closing the first movable presser, the first movable presser has a first guide hole having the same diameter as that of the guide hole when closed, the stacker removing device further includes a second movable presser below the first movable presser and a second presser opening and closing mechanism for opening and closing the second movable presser, the second movable presser having a second guide hole having the same diameter as that of the first guide hole when closed, the sum of the shaft length of the first movable presser and the shaft length of the second movable presser is set to be greater than the descending distance of the thin steel sheets descending from the fixed presser during removal of the stacker, The control section controls to start high-speed lowering of the support when the thin steel sheet on the support passes through the fixed press at a prescribed number of times, to close the first movable press when the laminated body on the support passes through the first movable press, to close the second movable press when the laminated body on the support passes through the second movable press, and to move out the laminated body, and then to start high-speed raising of the support, and to open the first movable press and the second movable press when the support collides with the thin steel sheet in the second movable press.

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