Punching part receiving device and stripping device

Abstract

To provide a punching part receiving device for receiving punched parts punched out from a sheet material, and a stripping device for separating punched waste from the sheet material. [Solution] The punching receiving device 220, which supports the punched-out portion 103a punched out from the sheet material 101, comprises a receiving claw 225b that supports the punched-out portion 103a, a housing 221 which includes an intermediate block 225 that is displaced as the punched-out portion 103a passes through, and a hollow portion 222 that houses the intermediate block 225, and a first magnet 240a arranged in a first concave shape formed in the intermediate block 225, and a second magnet 240b arranged in a second concave shape formed in the hollow portion 225, wherein the magnetic poles of the first magnet 240a and the second magnet 240b are arranged in a direction that generates a repulsive force.

Description

Technical Field

[0001] The present invention relates to a punching part receiving device for receiving a punched part punched out from a sheet material and a stripping device for separating the punched part from the sheet material.

Background Art

[0002] Paper products such as cardboard have various thicknesses. Usually, in order to form a required three-dimensional shape from a large-sized sheet material, the shape of the developed drawing is cut by a die cutter. Cutting, as used hereinafter in this specification, means making a cut in the sheet material. The cut sheet material must further punch out the inner part of a large-sized cardboard or the like to form an opening of a predetermined shape.

[0003] A sheet material having an opening of a predetermined shape is not separated from a sheet-like object only by cutting with a die cutter or the like. The large-sized sheet-like material with cuts is conveyed to a stripping device after cutting, and openings and the like required for the sheet product are imparted by punching. The stripping device includes a male mold and a female mold. The male mold includes a punching member and pushes downward a portion of an opening of a predetermined shape designed corresponding to the cut. The female mold has an opening corresponding to the cut, allows the punched scraps punched from the portion that becomes the opening to pass through, and discharges the punched scraps by a punched scrap discharging mechanism arranged at an appropriate position.

[0004] Various proposals have been made for the punching part receiving device and the stripping device described above. For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2001-121485) describes a punching scrap removing device having a return function that ensures an operation of extracting local punching scraps by a cooperative action with a pushing piece in a punching scrap removing treatment step and can cope with high-speed operation with a simple structure.

[0005] Furthermore, Patent Document 2 (Pamphlet No. WO2010 / 082626) describes a highly reliable stripping device with a punching waste receiving device that can reliably push out punching waste such as punching hole scraps.

[0006] The removal device described in Patent Document 1 has a configuration in which a punching waste receiving piece is placed in a containment space, with its upper part pivotally supported and a magnet attached to its lower part, and a magnet of opposite polarity is placed on the lower side of the containment space. The punching receiving piece is detachably fixed in place by the magnetic force of the opposing magnets on the lower side of the space. When a punching piece for punching out the sheet material is pressed against the part to be punched out, the part of the sheet material to be punched out is pushed downwards.

[0007] On the other hand, the part to be punched out, which is pushed downward, comes into contact with the tip receiving part of the removal device. Furthermore, as the thrusting piece is displaced downward, the tip receiving part receives a force that moves it downward, and this force is converted into a rotational force around the axis. When the generated rotational force exceeds the adhesive force of the magnet, the magnetic adhesion is released, and the tip receiving member rotates downward. In this way, the tip receiving member no longer supports the punching piece, and the punched-out scrap is punched out by the thrusting piece. The removal device described in Patent Document 1 can separate the punched-out scrap, but its operation is switch-like, and the load applied to the tip receiving part, pivot, and other movable parts is large, resulting in a lack of durability.

[0008] Furthermore, the punching part receiving device described in Patent Document 2 has a spring member positioned around a shaft member that is widely positioned downwards within a housing space formed inside, and a receiving claw is fixed to the upper part of the shaft member that contacts the sheet material.

[0009] When the thrusting member contacts the punched portion formed in the sheet material, the punched portion presses against the receiving claw, displacing it against the elastic force of the spring member so that it expands in the width direction along the shaft member. When the receiving claw retracts to a predetermined width, the punched portion is punched out of the sheet material. Once the punched portion is punched out, the receiving claw returns to its initial position due to the elastic force of the spring, allowing for repeated operation.

[0010] Although the punching part receiving device described in Patent Document 2 can also separate punching waste, the receiving claws are fixed to the shaft member, and stress is applied to the shaft member in a rotational direction during operation. As a result, it has the same problem as in Patent Document 1, where there are issues with the durability of the movable parts and support mechanism. [Prior art documents] [Patent Documents]

[0011] [Patent Document 1] Japanese Patent Publication No. 2001-121485 [Patent Document 2] WO2010 / 082626 Brochure [Overview of the project] [Problems that the invention aims to solve]

[0012] The present invention was made to solve the problems of the prior art described above, and aims to provide a punching part receiving device and a stripping device that do not generate unnecessary stress between the receiving claw and the member that supports and fixes the receiving claw during the punching operation of sheet material, have a small number of parts, operate smoothly, and have excellent durability. [Means for solving the problem]

[0013] According to the present invention, A punching part receiving device that supports the punched part that is punched out from a sheet material, A receiving claw is provided to support the punching section, and a middle section is displaced as the punching section passes through it, A housing having a hollow section for housing the aforementioned middle section, A first magnet is arranged in a first concave shape formed in the middle section, A second magnet is arranged in a second concave shape formed in the hollow portion, On both sides of the aforementioned middle piece, there are opposing elongated holes formed at an inclination in the vertical direction such that when a vertical force is applied to the middle piece, the receiving claw is retracted to the inside of the housing, comprising the magnetic poles of each of the first magnet and the second magnet are arranged in a direction that generates a repulsive force a punching portion receiving device is provided.

[0014] According to the present invention, the punching portion receiving device a fixing portion arranged on the opposite side of the receiving claw, a punching portion receiving device according to claim 1, comprising shoulders extending in a direction opposite to the fixing portion at the same level as the upper edge of the fixing portion on both sides.

[0015] According to the present invention, a punching portion receiving device according to claim 1, wherein the repulsive force is variable by controlling the magnetic flux density of the first magnet and the second magnet or the magnetic field between the first magnet and the second magnet.

[0016] According to the present invention, a stripping device for punching a punching portion from a sheet material, a male mold comprising a punching member for punching the punching portion, a female mold comprising an opening for placing the sheet material and passing the punching portion therethrough, and a punching portion receiving device arranged at a position adjacent to the punching portion. comprising the punching portion receiving device comprises receiving claws for supporting the punching portion, a middle plate that is displaced as the punching portion passes through, a housing comprising a hollow portion for accommodating the middle plate, a first magnet arranged in a first concave shape formed in the middle plate, a second magnet arranged in a second concave shape formed in the hollow portion, opposing long holes formed obliquely in the vertical direction on both sides sandwiching the middle plate, such that when a vertical force is applied to the middle plate, the receiving claws are retracted inside the housing, comprising The magnetic poles of the first magnet and the second magnet are arranged in a direction that generates a repulsive force. A stripping device is provided.

Advantages of the Invention

[0017] According to the present invention, it is possible to provide a punching part receiving device and a stripping device that do not generate unnecessary stress between the members that support and fix the receiving claws during the punching operation of the sheet material, have a small number of parts, smooth operation, and excellent durability.

Brief Description of the Drawings

[0018] [Figure 1] FIG. 1 is a diagram showing an embodiment when the stripping device 100 is viewed from above with the male mold removed. [Figure 2] FIG. 2 is a diagram showing the side structure of the stripping device 100 at a portion along the cutting line A - A in FIG. 1. [Figure 3] FIG. 3 is a diagram showing an exemplary configuration of the punching part receiving device 220 of the present embodiment. [Figure 4] FIG. 4 is a diagram showing the configuration of the side plate 226 used in the punching part receiving device 220 of the present embodiment. [Figure 5] FIG. 5 is a diagram showing the operation of the punching part receiving device 220 of the present embodiment together with the operation of the punching part 103a. [Figure 6] FIG. 6 is a diagram showing the measurement results of the repulsive force generated by the repulsion of the magnets in the punching part receiving device 220 of the present embodiment. [Figure 7] FIG. 7 is a diagram showing the operation of the stripping device 100 of the present embodiment.

Embodiments for Carrying Out the Invention

[0019] The following description of this embodiment will be based on the embodiments, but this embodiment is not limited to the detailed description and drawings described later. Configurations described in the detailed description but not in the drawings, and matters described in the drawings but not in the detailed description of the invention, can be combined in each other's embodiments.

[0020] Furthermore, it should be understood that the members and elements described in this specification with reference to the drawings are not necessarily shown at the same scale, and may be enlarged or reduced as appropriate for the purpose of explanation.

[0021] The following definitions are used in this embodiment. (1) Sheet material refers to thin, spreadable material primarily used for packaging goods, and includes corrugated cardboard, plastic sheets, etc. (2) A sheet type refers to a semi-finished product in which cuts have been made into a sheet material using a die cutter or the like. (3) Punching scrap refers to sheet material from which the punched-out areas have been punched out, from a sheet material that has been cut into a predetermined shape using a die cutter or the like. (4) A sheet product refers to a product in which the die-cut portion has been removed from the sheet mold. (5) A punching part support device is a device that supports the punching part within a predetermined length and load range in order to efficiently punch out the punching part. (6) A stripping device is a device that is equipped with the punching part receiving device described above and is also equipped with a male die, a female die, and a punching waste transport mechanism. (7) When a particular element is described numerically in this embodiment, the numerical value is the central value, and in this specification, the numerical value includes a range of ±10% from the central value. Also, when the terms “about” or “approximately” are used in this embodiment together with a numerical value, it means a range of ±20% from the value indicated by the numerical value. (8) The terms “up,” “upper side,” “down,” “lower side,” “left,” and “right” used in this embodiment are relative within the context of the description of the embodiment and do not define any absolute hierarchical or left-right relationships in this embodiment.

[0022] Figure 1 shows an embodiment of the stripping device 100 as viewed from above with the male mold removed. The sheet material 101 has cuts 102 made by a die cutter (not shown) and is then transported as a sheet mold 103 onto the female mold (not shown) of the stripping device 100. The sheet material 101 has cuts 102 corresponding to the unfolded pattern for forming the desired packaging box or the like. In the embodiment shown in Figure 1, cuts 102 of the same shape are repeatedly made in order to obtain multiple sheet products from one large sheet material.

[0023] The sheet mold 103 is provided with a punching section 103a of the desired shape at an appropriate position. The punching section receiving device 220 of this embodiment is positioned above the female die (not shown) on the back side of the paper surface of the punching section 103a. The punching section receiving device 220 supports the punching section 103a from one or both sides until the punching section 103a is punched out by a push-out member (not shown) mounted on the male die. Note that the shape of the punching section 103a is not limited to a rectangle, but can be a circle, triangle, polygon, or other closed curve.

[0024] Furthermore, the punching part receiving device 220 can also be used when punching out the outer die 104, and this punching part receiving device 220 is positioned on the female die near the outer cut 102 in Figure 1.

[0025] Figure 2 shows the side structure of the stripping device 100 along the cutting line AA in Figure 1. The stripping device 100 includes a male mold 200 positioned above the sheet material 101 and a female mold 210 positioned below the sheet material 101. In Figure 2, for the sake of clarity, members and elements not relevant to the explanation are not shown in order to illustrate the minimum configuration of the stripping device 100.

[0026] The male mold 200 comprises a push-out member 202 and a punching member 203 held by the base 201a. The push-out member 202 is a member that pushes out the punched portion 103a so that it does not become stuck in the sheet material 101, and is made of an elastic material such as urethane sponge. The base 201a of the male mold 200 is supported so as to be vertically movable relative to the sheet mold 103. The punching member 203 is positioned on the male mold 200 at a position corresponding to the punched portion 103a formed on the sheet mold 103.

[0027] The punching member 203, at a position corresponding to the punching portion or outer mold portion, pushes the punching portion 103a at the corresponding position as the male mold 200 descends, near the cut 102 of the punching portion 103a. As the punching member 203 descends, it punches the punching portion 103a out of the sheet mold 103 along the cut 102, creating punched scrap (not shown). The punched scrap is discharged outside the stripping device 100 by a punched scrap discharge mechanism 230 located below the female mold 210.

[0028] The female die 210 is equipped with a mounting member 210a for mounting the sheet die 103. In the portion of the female die 210 corresponding to the punching portion 103a of the sheet die 103, the mounting member 210a has an opening formed thereon that is large enough to allow the punching portion 103a to pass through. The opening allows the punched portion 103a to fall downward as punching waste after being punched. The fallen punching waste falls onto the punching waste discharge mechanism 230 and is discharged from the stripping device 100 by the operation of the punching waste discharge mechanism 230. There are no particular restrictions on the size of the opening formed in the female die 210 for allowing the punching waste to pass through, as long as it does not obstruct the punching of the punching portion 103a and can reliably allow the punching waste to fall.

[0029] The punching section receiving device 220 of this embodiment is fixed to the punching section 103a at a position adjacent to the opening of the mounting member 210a by appropriate fixing means 211 such as bolts. As will be described in detail later, a receiving claw 225b is positioned at the upper end of the punching section receiving device 220, adjacent to the punching section 103a. The receiving claw 225b extends from the upper end of the punching section receiving device 220 to the underside of the punching section 103a, supporting the punching section 103a from below. In Figure 2, for the sake of explanation, the punching section receiving device 220 is shown on the left side of the page, but the punching section receiving device 220 can be positioned at an appropriate location on the right side of the page.

[0030] In the embodiment shown in Figure 2, the punching member 203 approaches the punching portion 103a and then comes into contact with it. As the punching member 203 continues to descend, the punching portion 103a is punched out from the sheet die 103. At this time, the receiving claw 225b is pushed by the punching portion 103a and moves downward, retracting into the punching portion receiving device 220 to shorten the length at which it supports the punching portion 103a. When the receiving claw 225b no longer supports the punching portion 103a, the punching portion 103a falls as punched waste. The punching portion receiving device 220 of this embodiment will be described in detail below with reference to Figures 3 to 7.

[0031] Figure 3 shows an exemplary configuration of the punching part receiving device 220 of this embodiment. Figure 3(a) is a top view of the punching part receiving device 220, Figure 3(b) is a side view with the side plate 226 removed, and Figure 3(c) is a bottom view. Figure 3(d) is a perspective view showing the structure of the middle block 225. As shown in Figure 3(b), the punching part receiving device 220 includes a housing 221, a middle block 225, and a side plate 226. The housing 221 has a hollow section 222 for housing the middle block 225 in a retractable manner.

[0032] The intermediate block 225 is housed within the hollow section 222 in a way that allows it to be retracted without rattling. The intermediate block 225 can move from the state shown in Figure 3(b) in accordance with the movement of the punched-out waste until it contacts the stepped portion 222c formed on the lower end side of the hollow section 222. In addition, a moderately deep, elongated hole 222b is formed on the side of the housing 221 of the hollow section 222 that is at the back of the paper plane. The elongated hole 222b accommodates a protrusion 225c formed on the opposite side of the intermediate block 225 as shown in Figure 3(d), allowing the intermediate block 225 to move smoothly within the hollow section 222.

[0033] The lower part of the middle section 225 is formed in a concave shape 225a (corresponding to the first concave shape), into which a magnet (not shown) is fitted. The lower part of the hollow section 222 is also formed in a concave shape 222a (corresponding to the second concave shape). A magnet is also fitted into this concave shape 222a of the lower part. The magnet fitted into the concave shape 222a of the lower part is positioned so that its magnetic poles face the same direction as the magnet fitted into the concave shape 225a of the middle section 225.

[0034] Specifically, when the magnetic poles of each magnet are shown in the order of (top-bottom), each magnet is positioned so that (SS) or (NN) faces opposite each other. The middle block 225 is housed in the punching receiving device 220 by the upper part 227 of the housing 221, the side of the housing 221 on the far side of the paper, the front part 221c of the housing 221, and the side plate 226 which will be described later. When the middle block 225 is not in operation, it is housed in a position where the receiving claw 225b is approximately flush with the upper end of the punching receiving device 220.

[0035] Furthermore, the housing 221 has a fixing portion 224 for which fixing means 211 for fixing the punching receiving device 220 to the mounting member 210a of the female die 210 is positioned. The punching receiving device 220 is fixed by screw holes and fixing means 211 formed at predetermined positions on the lower end of the female die 210. The punching receiving device 220 also has shoulder portions 221b formed outward on the side facing the back of the paper and shoulder portions 226c formed outward on the side of the side plate 226, which will be described in more detail later.

[0036] Shoulder portions 221b and 226c extend from the fixing portion 224 to both sides in the opposite direction from the fixing portion 224, at the same level as the upper edge of the fixing portion 224. Shoulder portions 221c and 226c may be formed horizontally or at an angle, as long as they extend from the upper edge of the fixing portion 224 without any steps. These shoulder portions 221b and 226c work together with the upper surface of the fixing portion 224 to stably fix the punching part receiving device 220 to the lower surface of the mounting member 210a.

[0037] Figure 3(d) is a perspective view showing the configuration of the intermediate saddle 225 in this embodiment. The intermediate saddle 225 is made of lubricating plastic and, as shown in Figure 3(d), has a concave shape 225a, a receiving claw 225b formed at the upper end of the intermediate saddle 225, and an extension 225e that forms a shoulder portion extending downward from the receiving claw 225b and extends toward the housing 221. Furthermore, the intermediate saddle 225 has a cylindrical projection 225c formed on the upper part of the concave shape 225a, which is generally conformal to the curved surfaces formed on the upper and lower parts of the central hole. Although not shown in Figure 3(d), as described above, the projection 225c is also formed on the opposite side of the intermediate saddle from Figure 3(d).

[0038] The extension 225e of the middle piece 225 extends toward the interior of the housing 221 and contacts the lower edge of the upper part 227 of the housing 221, thereby restricting the position of the middle piece 225. A magnet of an appropriate size is placed inside the concave shape 225a, and the repulsive force between this magnet and the magnet in the concave shape 222a formed on the underside of the housing 221 allows the middle piece 225 to move up and down.

[0039] Figure 4 shows the configuration of the side plate 226 used in the punching part receiving device 220 of this embodiment. Figure 4(a) shows the outer surface of the side plate 226, and Figure 4(b) shows the inner surface of the side plate 226. As shown in Figure 4(a), a shoulder portion 226c is formed on the outer surface of the side plate 226. This shoulder portion 226c and a shoulder portion 221b formed at the same level on the opposite side of the housing 221 abut against the lower surface of the mounting member 210a of the female die 210, and work together with the fixing portion 224 to stably fix the punching part receiving device 220.

[0040] Furthermore, as shown in Figure 4(b), the side plate 226 has an elongated hole 226d formed on its inner surface that is symmetrical to the elongated hole 222b formed in the housing 221. This elongated hole 226d accommodates the protrusion 225c formed on the opposite side of the protrusion 225c shown in Figure 3(d) of the middle piece 225. Both the elongated holes 222b and 226d, and the protrusions 225c of the middle piece 225, guide the movement of the middle piece 225 within the housing 221.

[0041] Furthermore, the side plate 226 has an opening 226a through which a bolt for fixing is passed. The side plate 226 is fixed to the housing 221 by passing a bolt through this opening 226a and screwing it into a screw hole 223 formed at a corresponding position on the housing 221. The side plate 226 can also be fixed to the housing 221 with adhesive or the like, but it is preferable that it be removable in order to replace the middle piece 225 or adjust the magnetic force of the magnet.

[0042] Furthermore, the materials used for the middle section 225, housing 221, and side plate 226 are not particularly limited and can be made of plastic materials, composite materials, metal materials, or combinations thereof that have appropriate strength and lubricity.

[0043] Figure 5 shows the operation of the punching section receiving device 220 in this embodiment, along with the operation of the punching section 103a. Figure 5 also shows the magnets 240a (corresponding to the first magnet) and 240b (corresponding to the second magnet) used in this embodiment. Figure 5(a) shows the state in which the punching section receiving device 20 is not operating (i.e., it is in contact with the sheet mold 103 but is not under load). Figure 5(b) shows the state in which the end of the punching section 103a has been punched out to the level of the upper end of the receiving claw 225b of the punching section receiving device 220. Figure 5(c) shows the state in which, after the punching section 103a has been punched out and become punching waste 300, the receiving claw 225b has returned to the position shown in Figure 5(a) in the direction of arrow C due to the repulsive force of the magnets 240a and 240b. In Figures 5(a) to (c), the middle block 225 is shown with hatching.

[0044] As shown in Figure 5(a), the receiving claw 225b is in contact with the punching portion 103a. In the embodiment described, the overlap between the receiving claw 225b and the punching portion 103a is approximately 3.5 mm, taking into account the clearance between the receiving claw 225b and the punching member 203. However, the length of the overlap can be appropriately adjusted depending on the size of the punching portion receiving device 220 and the material of the sheet material 101. The angles of the elongated holes 222b and 226d with respect to the vertical are approximately 60°.

[0045] The inclination of the elongated holes 222b and 226d is formed such that when a vertical force is applied to the receiving claw 225b of the middle piece 225, the receiving claw 225b is pushed toward the housing 221. This angle can also be adjusted as appropriate depending on the size of the punching receiving device 220 and the material of the sheet material 101.

[0046] Figure 5(b) shows the state in which the punching section 103a is pushed out so that the tip of the receiving claw 225b is at the same level as the cut 102. Until this state is reached, the receiving claw 225b, together with the middle block 225, moves into the punching section receiving device 220 against the repulsive force of the magnets 240a and 240b. Then, when the upper end of the punching section 103a passes the upper end of the receiving claw 225b downwards, the receiving claw 225b begins to pop out towards the upper left of the page in Figure 5 due to the repulsive force of the magnets 240a and 240b, efficiently separating the punching section 103a from the sheet die 103.

[0047] Figure 5(c) shows the state in which the punched portion 103a has completely separated from the sheet die 103 and become punched waste 300, as indicated by arrow B. Figure 5(c) also shows the state in which the receiving claw 225b has returned to its initial position. The middle block 225 moves within the hollow portion 222 along the direction of arrow C, punches out the punched portion 103a, and then returns to the initial position shown in Figure 5(a). In this embodiment, the middle block 225 itself and the housing 221 do not have pivot members, elastic members, etc. to which stress is applied, as in the conventional technology, so they can be used repeatedly for a long period of time.

[0048] Figure 6 shows the measurement results of the repulsive force generated by the repulsion of magnets in the punching part receiving device 220 of this embodiment. The repulsive force was measured by pressing the receiving claw 225b against an electronic balance, measuring the distance between the magnets, and reading the displayed load of the electronic balance at the measured distance between the magnets (mm).

[0049] The results are shown in Table 1 below.

[0050] [Table 1]

[0051] The magnets used were 10mm x 5mm x 6mm in size, with a magnetic flux density of 4360 gauss (0.436T). Two identical magnets were used, positioned with the same magnetic poles facing each other. As shown in Figure 6, the repulsive force between the magnets is approximately 46g at a distance of 13mm between them. As the distance between the magnets decreases from this initial position to 3mm, the repulsive force between the two magnets increases to approximately 138g, as the distance between the magnets decreases. These loads are illustrative in this embodiment and can be set to different values ​​as appropriate in specific implementations.

[0052] In the embodiment described, the tip of the receiving claw 225b protrudes approximately 5 mm from the housing, and there is a clearance of approximately 1.5 mm from the end of the punching section 103a. Therefore, when the receiving claw 225b retracts approximately 3.5 mm, it ceases to support the punching section 103a. At this time, since the inclination angle of the elongated holes 222b and 226d is 60° with respect to the vertical, in this embodiment, the middle block 225 moves approximately 6.1 mm downward in the vertical direction. At this distance of movement, the receiving claw 225b ceases to support the punching section 103a and begins to fall as punched waste 300. Note that the lateral movement distance of the receiving claw 225b, i.e., the length of movement of the middle block 225 within the hollow section 222, is for illustrative purposes only and can be appropriately set according to the thickness and hardness of the sheet material used, the characteristics of the stripping device 100, and other specific applications.

[0053] As shown in Figure 6, the repulsive force corresponding to the position where the middle piece 225 is pushed down vertically by 6.1 mm is in the range of several tens of grams to approximately 100 grams. Furthermore, the repulsive force increases as the distance between the magnets is reduced, and although the increase in repulsive force tends to decrease beyond a certain distance, the repulsive force never disappears. In addition, since the punching part receiving device 220 of this embodiment does not use levers or elastic members to operate the receiving claws 225b, material deterioration and spring material fatigue do not occur over a long period of time.

[0054] Furthermore, magnets will remain virtually permanent unless they are kept at a temperature above the Curie point for an extended period or demagnetized or remagnetized by an external magnetic field. Therefore, they do not deteriorate over time and can be used stably for a long period.

[0055] The magnetic force of the magnets described above is illustrative, and the load required for the operation of the receiving claw 225b can be adjusted as appropriate. For example, the magnetic flux density between magnets 240a and 240b can be adjusted by combining two magnets with different magnetic forces or by attaching magnetic tape with appropriate magnetic properties to the side of the housing 221. The length of contact between the receiving claw 225b and the punching section 103a, as well as the vertical stroke, can be set as appropriate depending on the application. In this embodiment, as described above, the magnetic flux density between the magnets can be efficiently adjusted, so the operation of the receiving claw 225b can be efficiently optimized for a specific application.

[0056] Figure 7 shows the operation of the stripping device 100 of this embodiment. Figure 7(a) shows the state in which the sheet mold 103 is set on the stripping device 100. Figure 7(b) shows the state in which the punching member 203 of the stripping device is punching out the punched portion 103a. Figure 7(c) shows the state in which the punching member 203 punches out the punched portion 103a towards the punched waste discharge mechanism 230 to form punched waste 300.

[0057] In Figure 7(a), the punching section receiving device 220 is in contact with the lower surface of the sheet mold 103 and supports the punching section 103a. The punching waste discharge mechanism 230 is transporting the punching waste 300, which has already been punched at another location, to the right side of the paper in order to discharge it.

[0058] Figure 7(b) shows that the punching member 203 punches out the punching portion 103a of the sheet mold 103, and consequently the receiving claws 225b of the punching portion receiving device 220 retract into the interior of the punching portion receiving device 220. Figure 7(c) shows the state in which the punching member 203 has completely punched out the punching portion 103a and dropped the punching waste 300 onto the punching waste discharge mechanism 230.

[0059] After Figure 7(c), the middle block 225 and receiving claws 225b of the punching receiving device 220 return to their original positions. Meanwhile, the sheet die 103, which has been punched out at the punching section 103a to form a sheet product, is removed from the stripping device 100 to set the next sheet die 103 on the stripping device 100. Subsequently, a new sheet die 103 is set again on the stripping device 100 for the next punching process, and the punching operation is repeated.

[0060] As described above, the punching part receiving device 220 of this embodiment uses magnetic repulsion to drive the middle block 225 and the receiving claw 225b, and therefore has excellent durability as there are no parts that experience stress concentration or deterioration, such as both ends of the lever, the pivot, and the spring member.

[0061] Furthermore, since the punching receiving device of this embodiment uses the repulsive force of magnets to operate the middle section, the operating load of the receiving claw 5 can be easily set by adjusting the strength of the magnets used and the magnetic force between the magnets. Therefore, it is possible to fine-tune the operating load for the thickness and size of the sheet material and for specific applications, providing a punching receiving device and stripping device that can be applied to a wide range of applications.

[0062] Furthermore, the punching part receiving device of this embodiment is provided with shoulder portions on both sides that extend to both sides at the same level as the fixing portion 224. Therefore, the punching part receiving device of this embodiment can be securely fixed to the mounting member of the female die and can provide good operation over a long period of time.

[0063] Although the present invention has been described above with reference to embodiments, these embodiments are intended to illustrate the present invention to the extent that those skilled in the art can implement it, and the present invention is not limited to these embodiments. Those skilled in the art will understand from the disclosure herein that various modifications and alternatives of these embodiments are possible, and such modifications and alternatives are included in the scope of the present invention insofar as they achieve the effects and advantages of the present invention. [Explanation of symbols]

[0064] 100: Stripping device 101: Sheet material 102: Gap 103a: Punching section 200: Male type 202: Projection component 203: Punched material 210: Female type 220: Punching part receiving device 221: Cabinet 221b: Shoulder 221c: Front part 222: Hollow part 222a: Concave shape 222b: Long hole 224:Fixed part 225: Middle frame 225a: Concave shape 225b: Receiving claw 225e: Extension 226a:Aperture 226c: Shoulder 226d: Long hole 240a: Magnet 240b: Magnet

Claims

1. A punching part receiving device that supports the punched part that is punched out from a sheet material, A middle section is provided with a receiving claw that supports the punching section, and when a vertical force is applied from above by the punching section as it passes, the middle section is displaced to retract the receiving claw. A housing having a hollow section for housing the aforementioned middle section, A first magnet is arranged in a first concave shape formed in the middle section, A second magnet is arranged in a second concave shape formed in the hollow portion, On the inner surfaces of the housing and side plates facing each other with respect to the middle section, there are opposing elongated holes formed at an angle to the vertical direction, which accommodate the protruding portion of the middle section and guide its movement inward into the housing, Equipped with, The magnetic poles of the first magnet and the second magnet are arranged in a direction that generates a repulsive force that returns the displaced middle piece to a state where it is not subjected to a load from the punching portion. Punching part receiving device.

2. The punching part receiving device is A fixing part is positioned on the opposite side of the receiving claw, with the housing in between, for fixing the punching receiving device to the female die for supporting the sheet material, A shoulder portion provided on the side plate and the housing, extending from the fixing portion in the direction of the receiving claw at the same level as the upper edge of the fixing portion. A punching part receiving device according to claim 1, comprising:

3. The punching part receiving device according to claim 1, wherein the repulsive force is variable by controlling the magnetic flux density of the first magnet and the second magnet or the magnetic field between the first magnet and the second magnet.

4. A stripping device for punching out punched sections from sheet material, A male mold equipped with a punching member for punching out the aforementioned punched portion, A female die on which the sheet material is placed and which has an opening for the sheet material to pass through the punching section, and a punching section receiving device positioned adjacent to the punching section, Equipped with, The punching part receiving device is A middle section is provided with a receiving claw that supports the punching section, and when a vertical force is applied from above by the punching section as it passes, the middle section is displaced to retract the receiving claw. A housing having a hollow section for housing the aforementioned middle section, A first magnet is arranged in a first concave shape formed in the middle section, A second magnet is arranged in a second concave shape formed in the hollow portion, On the inner surfaces of the housing and side plates facing each other with respect to the middle section, there are opposing elongated holes formed at an angle to the vertical direction, which accommodate the protruding portion of the middle section and guide its movement inward into the housing, Equipped with, The magnetic poles of the first magnet and the second magnet are arranged in a direction that generates a repulsive force that returns the displaced middle piece to a state where it is not subjected to a load from the punching portion. Stripping device.

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