Laminate holding device

Abstract

To provide a laminate holding device that maintains high lamination accuracy even when the number of layers increases. [Solution] The laminate holding device of the present disclosure is a laminate holding device used when stacking conveyed sheet members, and comprises a stacking table on which sheet members are stacked and which is movable in the vertical direction, a pressing mechanism that presses the stacking table upward, a clamping mechanism that holds the stacked sheet members by sandwiching them with the stacking table, and a restricting mechanism that restricts the upward movement of the stacking table separately from the clamping mechanism, wherein the restricting mechanism has a wedge whose angle is variable, and the restricting mechanism changes the angle of the wedge continuously or in a notched manner according to the balance of a spring which changes according to the number of stacks, and / or further comprises a movable mechanism that has a receiving plate fixed to the stacking table and which is provided with jagged edges that move up and down with the stacking table, and a movable claw that conforms to the shape of the receiving plate, wherein the movable claw is configured to engage with the receiving plate and lock each time a sheet member is stacked.

Description

【Technical Field】 【0001】 The present disclosure relates to a laminate holding device, and particularly to a laminate holding device used when laminating a conveyed sheet member. 【Background Art】 【0002】 When laminating a sheet member such as a sheet-like electrode, for example, a laminate holding device as disclosed in Patent Document 1 is used. The laminate holding device has a configuration in which a laminate table is pressed from below by a pressing mechanism in order to sandwich and hold a sheet member laminated on the laminate table between a pair of clamping mechanisms facing each other with the sheet member interposed therebetween and the laminate table. 【Prior Art Documents】 【Patent Documents】 【0003】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2021-30566 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 When laminating a new sheet member on a laminated sheet member, the laminate holding device of Patent Document 1 needs to release the holding state of the sheet member by the clamping mechanism, and at that time, the laminate table rises. Therefore, the laminate holding device maintains the holding state of the sheet member by one of the pair of clamping mechanisms while releasing the holding state of the sheet member by the other clamping mechanism. Then, one end of the new sheet member is placed on the sheet member on the side of the other clamping mechanism and held by the other clamping mechanism. 【0005】 Then, the holding state of the sheet member by one clamping mechanism is released, the other end of the new sheet member is placed on the sheet member on the side of one clamping mechanism, and held by one clamping mechanism. Thereby, a new sheet member is laminated on the laminated sheet member. 【0006】 In such a laminated structure holding device, when stacking a new sheet member on top of an already stacked sheet member, it is necessary to operate a pair of opposing clamping mechanisms individually or to place the new sheet member on each of the opposing ends. Consequently, the sheet member stacking process becomes complicated. Furthermore, the stacking platform in such a laminated structure holding device is supported by being pushed upward by a biasing mechanism such as a tension spring, which leads to a problem where stacking accuracy deteriorates as the number of stacks increases. 【0007】 This disclosure was made in view of these problems and provides a laminate holding device that maintains high lamination accuracy even when the number of layers increases. [Means for solving the problem] 【0008】 A laminate holding device according to one aspect of the present disclosure is a laminate holding device used when stacking conveyed sheet members, The aforementioned sheet members are stacked on a stacking platform that is movable in the vertical direction, A pressing mechanism that presses the stacking platform upwards, A clamping mechanism that holds the stacked sheet members by sandwiching them between the stacking base, In addition to the clamping mechanism, there is a restricting mechanism that restricts movement upward of the stacking platform, It is equipped with. 【0009】 The laminate holding device of this disclosure is a laminate holding device used when stacking conveyed sheet members, and comprises a stacking table on which the sheet members are stacked and which is movable in the vertical direction, a pressing mechanism for pressing the stacking table upward, a clamping mechanism for holding the stacked sheet members by sandwiching them with the stacking table, and a restricting mechanism separate from the clamping mechanism for restricting the upward movement of the stacking table, wherein the restricting mechanism has a wedge with a variable angle, and the restricting mechanism changes the angle of the wedge continuously or in a notched manner according to the balance of a spring which changes according to the number of stacks, and / or further comprises a movable mechanism having a receiving plate fixed to the stacking table and having a jagged surface that moves up and down with the stacking table, and a movable claw that conforms to the shape of the receiving plate, wherein the movable claw engages with the receiving plate and locks each time one sheet member is stacked. This makes it possible to provide a laminate holding device that has high stacking accuracy even when the number of stacks increases. 【0010】 Furthermore, the pitch of the serrations on the receiving plate may be greater than the thickness of the sheet member, and may be mounted with an offset equal to the thickness of the sheet member. This allows the movable claw to engage the receiving plate more deeply as the thickness of the sheet member decreases, thereby preventing it from missing its target. 【0011】 Furthermore, the position in which the movable claw 8b engages with the receiving plate 8a and locks is the position in which the stacking base returns only a very small amount, and this small amount may be the thickness of one to five sheets of the sheet member S. As a result, the stacking base 3 does not return at all from the pressed position, which prevents the clamp from coming off due to momentary extra pushing from an external source. [Effects of the Invention] 【0012】 This disclosure makes it possible to provide a laminate holding device that maintains high lamination accuracy even when the number of layers increases. [Brief explanation of the drawing] 【0013】 [Figure 1]This is a perspective view showing a laminate holding device in this disclosure. [Figure 2] This figure shows the configuration of the movable mechanism of the laminate holding device disclosed herein. [Figure 3] This figure shows the configuration of the movable mechanism of the laminate holding device disclosed herein. [Figure 4] This is a diagram illustrating the configuration of the regulatory mechanism of the laminate holding device in this disclosure. [Modes for carrying out the invention] 【0014】 The following describes specific embodiments applying this disclosure in detail with reference to the drawings. However, this disclosure is not limited to the following embodiments. Also, for clarity, the following description and drawings have been simplified as appropriate. 【0015】 The configuration of the laminated material holding device 1 of this disclosure will be explained with reference to Figure 1. Figure 1 is a perspective view showing the laminated material holding device 1 of this disclosure. The laminated material holding device 1 of this disclosure is suitable, for example, when laminating sheet members such as sheet electrodes. 【0016】 In the following explanation, a three-dimensional (XYZ) coordinate system will be used for clarity. The X+ side is the front of the laminate holder 1, and the X- side is the rear of the laminate holder 1. The Y+ side is the left side of the laminate holder 1, and the Y- side is the right side of the laminate holder 1. The Z+ side is the top of the laminate holder 1, and the Z- side is the bottom of the laminate holder 1. 【0017】 The stacking device 1 comprises a base 2, a stacking platform 3, legs 4, a pressing mechanism 5, a clamping mechanism 6, and a regulating mechanism 7. The base 2 is a magnetic levitation linear motor that is approximately rectangular in shape when viewed from the Z-axis direction, and is configured to be movable while floating on the floor surface F (see Figures 4(a) and (b)). 【0018】 The stacking table 3 is arranged on the +Z axis side with respect to the base 2, is movable in the vertical direction (+Z axis side and -Z axis side), and is a plate body that is substantially rectangular when viewed from the Z-axis direction. The legs 4 support the stacking table 3 so as to be movable in the Z-axis direction, and are arranged near the four corners of the stacking table 3 when viewed from the Z-axis direction. 【0019】 The legs 4 include guide mechanisms such as columns and linear guides that extend from the base 2 to the +Z axis side. The guide mechanism extends in the Z-axis direction and includes a rail fixed to the column and a slider that is movable in the Z-axis direction along the rail and is fixed to the -Z axis side end of the stacking table 3. Thereby, the stacking table 3 is movable in the Z-axis direction. 【0020】 The pressing mechanism 5 presses the stacking table 3 to the +Z axis side. The pressing mechanism 5 includes an elastic body such as a spring. The -Z axis side end of the pressing mechanism 5 is fixed to the base 2 so as to be rotatable about a rotation axis extending in the X-axis direction, and the +Z axis side end of the pressing mechanism 5 is fixed to the stacking table 3 so as to be rotatable about a rotation axis extending in the X-axis direction. 【0021】 The clamping mechanism 6 sandwiches and holds the sheet member S (see FIGS. 4(a) and 4(b)) between the stacking table 3. The clamping mechanism 6 includes a clamping arm 6a, a clamping rod 6b, a slide mechanism 6c, a tilt mechanism 6d, and a spring 6e. 【0022】 The clamping arm 6a contacts the sheet member S from the +Z axis side at the sheet member S stacked on the most +Z axis side in order to sandwich and hold the sheet member S between the stacking table 3. A plurality (for example, four) of clamping arms 6a are arranged at intervals in the Y-axis direction. 【0023】 The clamping rod 6b extends in the Y-axis direction and is arranged on the -X axis side with respect to the stacking table 3 when viewed from the Z-axis direction. The -X axis side end of the clamping arm 6a is fixed to the clamping rod 6b. The clamping rod 6b is fixed to a slider that is movable in the Z-axis direction along a guide fixed to the base 2 so as to be swingable about a swing axis extending in the Y-axis direction in the tilt mechanism 6d. 【0024】 The sliding mechanism 6c moves the clamp arm 6a and clamp rod 6b in the Z-axis direction via the slider. In the sliding mechanism 6c, the slider is pushed down as far as the Z-axis direction as possible when the long diameter portion of a cam, which is rotatably supported by a guide and provided on a rotating shaft extending in the Y-axis direction, contacts the arm extending from the slider toward the Z-axis direction. This positions the clamp arm 6a and clamp rod 6b as far as the Z-axis direction as possible. 【0025】 At this time, the arm of the slide mechanism 6c is biased toward the Z-axis+ side by an elastic body. In the slide mechanism 6c, the roller follower of the lever fixed to the end of the rotation axis contacts the sliding fixing cam provided at the first position on the floor surface F where new sheet members are stacked, and the cam rotates clockwise via the lever when viewed from the Y-axis+ side. 【0026】 As a result, the downward pressure on the Z-axis side of the slider by the cam is released, and the biasing force of the elastic body pushes the slider upward on the Z-axis side via the arm of the slide mechanism 6c, causing the clamp arm 6a and clamp rod 6b to move to the Z-axis side. 【0027】 In the slide mechanism 6c, the rotation axis of the slide mechanism 6c is biased by another elastic body so that the long diameter portion of the cam returns to a state in contact with the arm. When the laminate holding device 1 passes the first position on the floor surface F, the long diameter portion of the cam returns to a state in contact with the arm, and the clamp arm 6a and clamp rod 6b return to the state where they are positioned closest to the Z-axis. 【0028】 The tilt mechanism 6d causes the clamp arm 6a and the clamp rod 6b to swing around the Y axis. In the tilt mechanism 6d, for example, the clamp rod 6b is fixed via an arm to a swing axis that is rotatably supported by a slider and extends in the Y-axis direction. 【0029】 In the tilt mechanism 6d, the clamp arm 6a and clamp rod 6b rotate most counterclockwise via the arm when viewed from the Y-axis+ side, with the major diameter portion of a cam provided on a rotating shaft that is rotatably supported by a slider on the X-axis- side and Z-axis- side with respect to the pivot axis and extends in the Y-axis direction, contacting the arm. As a result, when viewed from the Z-axis direction, the clamp arm 6a is positioned approximately parallel to the XY plane within the arrangement area of ​​the stacking base 3. 【0030】 At this time, the arm of the tilt mechanism 6d is biased clockwise by an elastic body when viewed from the Y-axis+ side. In the tilt mechanism 6d, the roller follower of the lever fixed to the end of the rotation axis contacts the tilt fixing cam provided at a first position on the floor surface F, causing the cam to rotate clockwise via the lever when viewed from the Y-axis+ side. 【0031】 As a result, when viewed from the Y-axis + side, the counterclockwise pushing of the arm by the cam loosens, and the clamp arm 6a and clamp rod 6b swing clockwise via the arm due to the biasing force of the elastic body, and when viewed from the Z-axis direction, the clamp arm 6a retracts from within the placement area of ​​the stacking base 3. 【0032】 In the tilt mechanism 6d, the rotation axis of the tilt mechanism 6d is biased by another elastic body so that the long diameter portion of the cam returns to a state in contact with the arm. When the stacking device 1 passes the first position on the floor surface F, the long diameter portion of the cam returns to a state in contact with the arm, and the clamp arm 6a returns to a state where it is positioned approximately parallel to the XY plane in the arrangement area of ​​the stacking platform 3 when viewed from the Z-axis+ side. 【0033】 Thus, the slide mechanism 6c and the tilt mechanism 6d enable movement of the clamp arm 6a and the clamp rod 6b in the Z-axis direction and oscillation around the Y-axis. 【0034】 The restricting mechanism 7 is provided separately from the clamping mechanism 6 and restricts the movement of the stacking platform 3 toward the Z-axis + side. Figures 4(a) and 4(b) are diagrams illustrating the configuration of the restricting mechanism 7 of the stacking platform holding device of this disclosure. Figures 4(a) and 4(b) show the clamping mechanism 6 and the like in a simplified manner. Figure 4(a) shows a state in which one sheet member S is placed on the stacking platform 3, and Figure 4(b) shows a state in which multiple sheet members S (for example, 30 sheets) are placed on the stacking platform 3. 【0035】 As shown in Figures 1 and 4(a) and (b), the regulating mechanism 7 comprises a wedge 7a, a stopper 7b, a guide mechanism 7c, a biasing mechanism 7d, and a return mechanism 7e. The wedge 7a is, for example, a roughly right-angled triangular prism when viewed from the X-axis direction and extends in the Y-axis direction. On the Z-axis side face of the wedge 7a, for example, an inclined surface 7f is formed that slopes toward the Z-axis as it moves toward the Y-axis+ side. 【0036】 The stopper 7b protrudes from the stacking base 3 toward the Z-axis, as shown in Figures 4(a) and (b), and has an insertion portion 7g into which the wedge 7a is inserted. The Z-axis side surface of the insertion portion 7g has an inclined surface 7h formed thereon, which, for example, slopes toward the Z-axis as it moves toward the Y-axis+ side, corresponding to the inclined surface 7f of the wedge 7a. In this case, the inclined surface 7f of the wedge 7a and the inclined surface 7h of the stopper 7b should be in approximate surface contact at a self-locking angle so as to restrict the relative movement of the wedge 7a and the stopper 7b. 【0037】 The guide mechanism 7c guides the wedge 7a in the Y-axis direction. As shown in Figures 4(a) and (b), the guide mechanism 7c comprises a rail 7i and a slider 7j. The rail 7i extends, for example, in the Y-axis direction and is fixed to the base 2. The slider 7j moves along the rail 7i in the Y-axis direction. The wedge 7a is fixed to the slider 7j via a fixing member 7k. 【0038】 The biasing mechanism 7d biases the wedge 7a to the Y-axis + side, for example. The biasing mechanism 7d is equipped with, for example, a tension spring, and as shown in Figures 4(a) and (b), for example, the Y-axis + end of the biasing mechanism 7d is fixed to the base 2 via a fixing member 7l, and the Y-axis - end of the biasing mechanism 7d is fixed to the slider 7j of the guide mechanism 7c. 【0039】 The return mechanism 7e moves the wedge 7a to the Y-axis- side, for example, to return it to a preset initial position. Here, the initial position of the wedge 7a is, for example, the position where the wedge 7a is positioned such that the Z-axis-side surface of the stacking table 3 and the Z-axis-side surface of the clamp arm 6a of the clamping mechanism 6 are in approximate contact, when the sheet member S has not yet been transported to the stacking table 3. 【0040】 The return mechanism 7e includes a rod 7m, as shown in Figures 4(a) and (b). The rod 7m extends, for example, in the Y-axis direction, with the Y-axis+ side portion of the rod 7m supported on the base 2 to guide movement in the Y-axis direction, and the Y-axis- side end of the rod 7m fixed to the slider 7j of the guide mechanism 7c. 【0041】 Furthermore, depending on the amount of movement of the stacking platform 3 in the Z-axis direction, it is preferable that multiple regulating mechanisms 7 be arranged in the X-axis direction, as shown in Figure 1, so that the contact state between the wedge 7a and the stopper 7b is maintained in accordance with the movement of the stacking platform 3 in the Z-axis direction. 【0042】 Next, the problems that this disclosure solves will be explained below. The stacking table 3 descends according to the number of stacks of sheet members S. The clamping mechanism 6 that pushes up the stacking table 3 pushes back towards the Z-axis + side by the spring 6e, but as the number of stacks of sheet members S increases, the spring 6e bends and the spring force increases. At the same time, the biasing mechanism 7d presses the wedge 7a against the stopper 7b, but as the number of stacks of sheet members S increases, the biasing mechanism 7d compresses and the spring force decreases (see Figure 4(b)). 【0043】 The effect of restricting movement by the wedge 7a is determined by the balance between the spring force of the spring 6e and the spring force of the biasing mechanism 7d. Therefore, when the number of stacked sheet members S is large, the spring force of the spring 6e becomes stronger than the spring force of the biasing mechanism 7d, the effect of restricting movement by the wedge 7a weakens, the wedge 7a moves towards the Y-axis, and as a result, a force acts on the stacking base 3 to return to its original position. 【0044】 Therefore, the clamping mechanism 6 needs to push down the stacking table 3 again, which increases the energy required to operate the cam that drives the clamping mechanism 6, increases the external force applied to the movable element, and increases the deviation, thus degrading the stacking accuracy. 【0045】 The angle of the wedge 7a that stops the stacking platform 3 from returning is determined by the balance of the two forces mentioned above. If the angle is shallow, when there are few stacks of sheet members S, the wedge 7a is pulled, causing the stacking platform 3 to lower and making clamping difficult. On the other hand, when there are many stacks of sheet members S, the spring force of the spring 6e becomes stronger than that of the wedge 7a, causing the stacking platform 3 to rise. When clamping, the stroke requiring force becomes longer, placing an unnecessary burden on the cam that drives the clamp. 【0046】 The laminate holding device 1 according to this disclosure solves the problem by providing a movable mechanism 8 that continuously changes the angle of the wedge 7a in accordance with the balance between the spring force of the spring 6e, which changes according to the number of layers of sheet members S, and the spring force of the biasing mechanism 7d. 【0047】 The laminate holding device 1 according to this disclosure includes a movable mechanism 8 within the regulating mechanism 7 (the area enclosed by the dotted line in Figure 1) that allows the angle of the wedge 7a to be varied or made into a notched type. The movable mechanism 8 will now be described using Figures 2 and 3. The movable mechanism 8 includes a receiving plate 8a and a movable claw 8b. 【0048】 The receiving plate 8a is fixed to the stacking base 3 and moves up and down together with the stacking base 3. The receiving plate 8a is provided with serrations as shown in Figures 2 and 3. The pitch of the serrations is preferably set to match, for example, the thickness of one layer of sheet material S. The movable claw 8b has a shape that conforms to the shape of the receiving plate 8a, and each time a sheet material S is stacked, the movable claw 8b engages with the receiving plate 8a and locks. This makes it possible to maintain a state in which the stacking base 3 goes down when pushed but does not return to its original position, regardless of the change in spring balance due to the number of stacked sheet material S. 【0049】 Furthermore, the position in which the movable claw 8b engages with the receiving plate 8a and locks may be set to a position where the stacking base 3 returns by a small amount, for example, the thickness of one to five sheet members S. By doing so, the stacking base 3 does not return at all from the pushed position, thus preventing the clamp from coming loose due to momentary extra external pressure. 【0050】 Furthermore, the pitch of the serrations on the receiving plate 8a may be set to, for example, about five times the thickness of the sheet member S, and it may be mounted with an offset equal to the thickness of the sheet member S. As the thickness of the sheet member S decreases due to miniaturization of the device, the engagement of the movable claw 8b with the receiving plate 8a becomes shallower, which can suppress missed engagements. 【0051】 This makes it possible to prevent the stacking stand 3 from returning, regardless of the number of stacks of sheet members S, and to improve stacking accuracy. 【0052】 This disclosure is not limited to the embodiments described above, and may be modified as appropriate without departing from the spirit of the invention. [Explanation of Symbols] 【0053】 1. Laminate holding device 2 bases 3. Stacking platform 4 legs 5. Pressing mechanism 6. Clamping mechanism 6a Clamp arm 6b Clamp Rod 6c slide mechanism 6d tilt mechanism 6e spring 7. Regulatory bodies 7a wedge 7b Stopper 7c Guide mechanism 7d biasing mechanism 7e Return mechanism 8 Movable mechanism 8a Receiving 8b Movable claw F Floor S Sheet Material

Claims

[Claim 1] A laminate holding device used when stacking conveyed sheet members, The aforementioned sheet members are stacked on a stacking platform that is movable in the vertical direction, A pressing mechanism that presses the stacking platform upwards, A clamping mechanism that holds the stacked sheet members by sandwiching them between the stacking base, In addition to the clamping mechanism, the stacking platform is equipped with a restricting mechanism that restricts upward movement of the stacking platform. The aforementioned regulating mechanism has a wedge with a variable angle, The aforementioned iPhone mechanism, The angle of the wedge is changed continuously or in a notched manner according to the balance of the spring which changes according to the number of layers, and / or The device further comprises a receiving plate fixed to the stacking base and having serrations that move up and down with the stacking base, and a movable mechanism having a movable claw that conforms to the shape of the receiving plate, wherein the movable claw engages with the receiving plate and locks in place each time one sheet member is stacked. Laminate holding device. [Claim 2] The pitch of the serrations on the receiving plate is greater than the thickness of the sheet member, and it is mounted with an offset equal to the thickness of the sheet member. The laminate holding device according to claim 1. [Claim 3] The position in which the movable claw engages with the receiving plate and locks is the position in which the stacking table returns by a small amount. The aforementioned minute amount is equivalent to the thickness of one to five sheets of the sheet material. The laminate holding device according to claim 1.

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