JP2012166331A - Cutting unit for molding member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting unit A for molding members, which can be simply manufactured at a low cost, and cuts a member B formed by integrating joint bodies 10 and a plurality of molded parts 20, 30, into the plurality of molded parts 20, 30, to be collected separately.SOLUTION: The cutting unit A includes a first accommodation storage box 40 for storing first molded parts 20, a second accommodation storage box 50 for storing second molded parts 30, and a cutting means 60. The cutting means 60 cuts parts exposed from the first and second accommodation storage boxes 40, 50, which connect the first molded parts 20 and joint members 10 and connect the second molded parts 30 and the joint members 10, of the molded member B stored in the first accommodation storage box 40 and the second accommodation storage box 50.

Description

  The present invention relates to a cutting unit for a molded member.

  In injection molding and bead foam molding, in order to mold a large number of molded parts at once, a mold having a plurality of cavities on both the left and right sides of the runner extending from the raw material filling nozzle may be used. . As shown in FIG. 12, the molded member 1 obtained by removing from the mold of that form is a rod-shaped joint body 2 and a required number of first moldings integrally molded on one side of the joint body 2. It becomes the form provided with the components 3 and the required number of 2nd molded components 4 integrally molded by the other side part of the connection body 1. FIG. Then, the first molded part 3 and the second molded part 4 as products are cut and separated from the molded member 1 after demolding by an appropriate means, and the remaining joint 2 is discarded. An example of such a molded member is shown in FIG. 5 of Patent Document 1 or FIG. 6 of Patent Document 2, etc., and Patent Document 2 also describes a cutting / separating device therefor.

JP-A-11-192640 JP 2006-320956 A

  The work of cutting and separating the first molded part 3 and the second molded part 4 from the molded member 1 in the form shown in FIG. 12 is often performed manually. In the case of manual work, if the molded part to be cut and separated is relatively large, it can be easily separated, but a large number of small members 3 and 4 are integrated on both sides of the connecting body 2. In the case of the molded member 1 being molded, it is a very complicated operation. As described in Patent Document 2, an apparatus for cutting and separating is sometimes used, but this requires a large investment.

  Furthermore, depending on the molded member 1, it is necessary to cut and separate the first molded part 3 on one side of the joint body 2 and the second molded part 4 on the other side from the joint body 2 without mixing them. However, whether cutting or separation work is performed manually or using equipment, it is necessary to pay much attention to avoid mixing both after cutting and separation. I can't.

  The present invention has been made in view of the circumstances as described above, and from a molded member in which a large number of molded parts are integrally formed in at least two locations of a joint body, while being an apparatus that can be manufactured easily and inexpensively. It is an object of the present invention to provide a cutting unit for a molded member that can easily cut and separate a large number of molded parts and that can accommodate and hold the separated molded parts in a holding box.

  A cutting unit for a molded member according to the present invention is a cutting unit for cutting and separating a molded member in which a plurality of molded parts are integrally formed through a joint body and joined together, into the joint body and the molded part. By overlapping a plurality of molded members in one direction, a plurality of molded component groups aligned in the direction in which the molded members are overlapped with each other, and a connecting portion between each connected body and the molded component is exposed. One or a plurality of storage holding boxes to be stored while being held in an aligned state, and a cutting means for cutting the connecting portion, and forming either by moving either one or both of the storage holding box and the cutting means The parts and the connecting body are cut and separated, and the molded parts stored in the storage and holding box are stored and held in the box.

  The cutting unit for a molded member according to the present invention has only a housing and holding box and a cutting means, has a very simple structure, and can be manufactured at a low cost. In the cutting operation, a plurality of molded members are overlapped in one direction to form a plurality of molded component groups aligned in the direction in which the molded members are overlapped, and the connecting portion between each of the joints and the molded components is exposed. Each molded part group is accommodated in one or a plurality of accommodation holding boxes while being held in an aligned state. In this state, either or both of the holding box and the cutting means are moved to cut and separate the molded part and the connecting body. This cutting operation is also very easy, and after cutting, the molded parts stored in the holding box are stored and held in the holding box. Work is very easy.

  In one mode of the cutting unit for a molded member according to the present invention, a plurality of molded parts having different shapes are integrally formed and joined to the joint body of the molded members, and the container holding box is a group of molded parts having the same shape. Is housed and held. In this aspect, after cutting and separating, each group of molded parts having the same shape is housed in a separate housing and holding box, so that molded parts having different shapes can be reliably sorted without being mixed. It becomes possible.

  In the cutting unit for a molded member of the present invention, the connecting body may be a rod-shaped body, and a plurality of molded parts may be integrally formed along the longitudinal direction on at least two side portions. As one aspect of that case, a plurality of first molded parts having the same shape are formed along the longitudinal direction of one side portion at the opposite side portions of the connecting body, and along the longitudinal direction of the other side portion. And a plurality of second molded parts having the same shape are molded. Further, the connecting body may be a disk-shaped body in which molded parts are integrally formed at at least two places on the outer peripheral portion.

  In the cutting unit for a molded member of the present invention, the cutting means is arbitrary as long as it can cut the connection portion exposed from the housing and holding box of the molded part and the connecting body in the molded member. What is necessary is just to select an optimal thing suitably according to material. As an example, a cutting means including a plurality of cutting members capable of simultaneously cutting a plurality of connecting portions can be given. Further, when the molded member is a foamed resin molded member, there is exemplified a cutting means composed of one or a plurality of heat rays such as a nichrome wire and a plurality of column members that bridge the heat rays. When the molded member is a non-foamed resin molded member, means such as a saw blade can be suitably used.

  According to the present invention, a large number of molded parts can be easily cut and separated from a molded member in which a large number of molded parts are integrally formed in at least two locations of a joint, although the apparatus can be manufactured simply and inexpensively. Thus, a cutting unit for a molded member is obtained which is capable of reliably storing and holding the separated molded part in the holding box.

The perspective view which shows an example of the shaping | molding member used as the object of cutting with the cutting | disconnection unit by this invention. The top view (FIG. 2 (a)) and side view (FIG.2 (b)) of the shaping | molding member shown in FIG. The side view which shows the state which piled up two sheets of the shaping | molding member shown in FIG. The figure which shows an example of the 1st accommodation holding box and cutting means which comprise a cutting unit. The figure which shows only the cutting | disconnection means shown in FIG. The perspective view which shows the state which accommodated the 1st shaping | molding component side of the group of shaping | molding members shown in FIG. 1 in the 1st accommodation holding box, and accommodated the 2nd shaping | molding component side in the 2nd accommodation holding box. The front view which shows the state which has cut | disconnected the group of the shaping | molding members shown in FIG. 6 using the cutting | disconnection means shown in FIG. The side view which shows the state which has cut | disconnected the group of the shaping | molding members shown in FIG. 6 using the cutting | disconnection means shown in FIG. The perspective view which shows the other example of the shaping | molding member used as the object of cutting | disconnection by a cutting unit. The figure explaining the state which cuts and isolates the group of the shaping | molding member shown in FIG. 9 using a cutting | disconnection means. The figure which shows the state at the time of the cutting | disconnection separation shown in FIG. The figure explaining the other example of a shaping | molding member.

  Hereinafter, the present invention will be described based on embodiments. First, an example of the molded member B to be cut by the molded member cutting unit A according to the present invention will be described with reference to FIGS. 1 to 3.

  Although not limited, in this example, the molded member B is an in-mold foam molded part by bead foam molding. Basically, the same is integrally formed on one side portion of the rod-shaped joint body 10 and the joint body 10. Two or more (four in the figure) first molded parts 20 having the shape and two or more (four in the figure) second molding having the same shape integrally formed on the other side portion of the joint body 10. The component 30 is provided. The first molded part 20 and the second molded part 30 may have the same shape, but are different in this example.

  Although not shown in the figure, the molded member B having such a shape includes a conventionally known bead foam including a runner portion into which foamed resin is injected and a molding cavity into which the foamed resin injected into the runner portion flows. The molding can be performed integrally using a molding machine. In this example, a molding machine for bead foam molding having four molding cavities on one side of the runner part and also having four molding cavities at symmetrical positions on the other side is used. What is molded at the part is the rod-shaped connecting body 10 described above, what is molded with the four molding cavities on one side is the first molded part 20, and what is molded with the other four molding cavities. The second molded part 30 is obtained. In the illustrated molded member B, the four first molded parts 20 and the four second molded parts 30 have substantially the same weight, and are formed symmetrically and horizontally on both sides of the rod-shaped connecting body 10. Yes.

  The rod-shaped connecting body 10 has a flat plate-like main body portion 11 and leg portions 12 and 12 depending from the main body portion 11 at both ends in the longitudinal direction. The surface 13 on which the legs 12 and 12 of the main body portion 11 hang down is a flat surface, and the opposite surface 14 has a V-shaped cross-section with a lower central portion over the entire length. Further, in the portion of the opposite surface 14 where the leg portions 12, 12 are formed, an engagement notch that engages with the lower end portions of the leg portions 12, 12 of the molding member B of the same shape positioned at the upper level. 15 is formed.

  The lower end surface 16 of the leg portions 12 and 12 is a flat surface, and when the molding member B is placed so that the lower end surface 16 of the leg portions 12 and 12 is grounded on an appropriate horizontal plane, the four first molded parts 20 are formed. The leg portions 12 and 12 are formed so that the four second molded parts 30 can maintain a substantially horizontal posture with respect to the ground contact surface. The upper end surface 17 of the engagement notch 15 is a flat surface parallel to the lower end surface 16.

  Therefore, as shown in FIG. 3, when the upper molding member B1 is stacked on the lower molding member B2 so that the connecting members 10 and 10 overlap each other, the rod-shaped member in the upper molding member B1 is stacked. The lower ends of the legs 12, 12 formed at both ends of the connecting body 10 enter into the engagement notches 15 formed at both ends of the rod-shaped connecting body 10 in the lower molding member B2, and the legs 12, 12 of the upper molding member B1 are formed. The 12 flat lower end surfaces 16 are placed on the flat upper end surface 17 of the engagement notch 15 of the lower molding member B2, and are stacked in a stable posture in a state aligned with each other. It becomes a state. In this posture, the upper and lower molding members B1 and B2 are in a state in which the free movement of the rod-shaped connecting body 10 in the major axis direction is restricted.

  In the illustrated molding member B, one surface 14 of the rod-shaped connecting member 10 has a V-shaped cross section with a lower central portion over the entire length when the foaming particles are filled in the molding die. In order to make it easier for the foamed particles to enter the molding cavities from the bottom, the bottom surface side of the liner portion is inclined to the molding cavities, and the cross section is V-shaped with the central portion lowered. It is not an essential configuration in the molded member B.

  Further, as shown in FIG. 2 (b), the height h of the leg portion 11, that is, the length h from the lower end surface 16 of the leg portion 12 to the upper end surface 17 of the engagement notch 15 is the first molded part. 20 and the maximum thickness H of the second molded part 30 are equal to or slightly longer than the maximum.

  The rod-shaped connecting body 10 is not composed of the main body portion 11 and the leg portion 12 as shown in the figure, but is a single rod body having the same vertical cross-sectional area as that of the leg portion 12. It may be. As shown in the figure, when the main body portion 11 and the leg portion 12 are formed, the space between the leg portions 12 and 12 at both ends of the main body portion 11 can be regarded as a portion where the thickness of the rod-like connecting body 10 is reduced. It is possible to save raw materials and reduce weight. The engagement notch 15 described above can be omitted. In that case, the upper and lower molding members B1 and B2 are not restricted from freely moving in the major axis direction of the rod-shaped connecting body 10.

  Next, an example of the cutting unit A according to the present invention and a method of using the same will be described with reference to FIGS. The cutting unit A basically includes a first storage / holding box 40, a second storage / holding box 50, and a cutting means 60.

  The first storage and holding box 40 includes a molded member B, an example of which is shown in FIGS. 1 to 3, that is, a rod-shaped connecting body 10, and two or more first molded parts 20 integrally formed on one side thereof. And one of the molded parts B (the first molded part 20 in the illustrated example) in the molded member B having two or more second molded parts 30 integrally molded on the other side. For this purpose, a bottom plate 41 and a side wall 42 around the bottom plate 41 are provided, and one surface is open. The open end surface 43 of the side wall 42 is a surface parallel to the bottom plate 41.

  The side wall 42 only needs to have a position where the connecting portion between the accommodated molded part 20 or 30 and the connecting body 10 is positioned higher than the open end face 43 when the molded part 20 or 30 is accommodated. In the illustrated example, the first housing is provided so that a large number (15 in this example, as shown in FIG. 8) of the molded members B stacked in a state aligned in the same direction as shown in FIG. 3 can be accommodated. The holding box 40 has a rectangular bottom plate 41, and side walls 42 having the same height are erected on the four sides thereof.

  The distance W1 on the inner surface side between the side walls 42, 42 in the longitudinal direction of the first housing box 40 is substantially equal to the distance S1 between the outer sides of the four first molded parts 20 of the molded member B (FIGS. 2, 4 and 4). The distance W2 on the inner surface side between the side walls 42, 42 in the short side direction is the first molding in the foremost row in a large number (15 in the figure) of molding members B superimposed in an aligned state. It is substantially equal to the distance S2 between the outer surface of the part 20 and the outer surface of the first molded part 20 in the last row (see FIGS. 4 and 8). The distance W3 between the inner bottom surface of the bottom plate 41 and the open side end surface 43 of the side wall 42 is substantially equal to the first molded part 20 length S3 (see FIGS. 2 and 8).

  Therefore, the group BS of a large number (15 sheets) of the molded members B superimposed in the aligned state is in the same direction in a posture in which the group of the first molded parts 20 is stored in the first storage holding box 40. The aligned posture can be maintained as it is. Even when a smaller number of molding members B are accommodated than 15 sheets, the aligned posture can be maintained by inserting an appropriate pad material into the gap formed between the side wall 42 and the molding member B.

  Next, the 2nd accommodation holding box 50 is demonstrated. In this example, the second storage / holding box 50 includes four second storage / holding boxes 50a, 50b, 50c, and 50d having the same shape, and is stored in the first storage / holding box 40 as described above. The four groups 30a, 30b, 30c, and 30d of the second molded part 30 in the group BS of a large number of molded members B are accommodated, respectively. Each second storage and holding box 50 includes a rectangular bottom plate 51 and a side wall 52 around the bottom plate 51, and one surface is open. An open side end surface 53 of the side wall 52 is a surface parallel to the bottom plate 51.

  A distance W4 on the inner surface side between the side walls 52, 52 in the longitudinal direction of each second holding box 50 is substantially equal to a distance S4 between the outer sides of the second molded part 30 of the molded member B (see FIGS. 2 and 7). The distance W5 on the inner surface side between the side walls 52, 52 in the short direction is the outer surface and the last row of the second molded part 30 in the foremost row in a large number (15) of molded members B superimposed in an aligned state. Is substantially equal to the distance S5 between the outer surface of the second molded part 30 (see FIG. 8). Furthermore, the distance W6 between the inner bottom surface of the bottom plate 51 and the open side end surface 53 of the side wall 52 is substantially equal to the length S6 of the second molded part 30. Therefore, each 2nd accommodation holding box 50a-50d is the state which accommodated each group 30a-30d of each 2nd molded component in the state which carried out frictional contact.

  Next, the cutting means 60 will be described. 6 to 8, the cutting means 60 has a molded member B in which the first molded component 20 is accommodated in the first accommodating / holding box 40 and the second molded component 30 is accommodated in the second accommodating / holding box 50. Is cut and separated into three member groups, that is, a group of the first molded part 20, a group of the second molded part 30, and a group of rod-shaped connecting bodies 10, and the first molded part 20 and the bar-shaped group. It is possible to cut a portion exposed from the first accommodation holding box 40 and the second accommodation holding box 50, which is a connection portion between the first accommodation holding box 40 and the second accommodation holding box 50. Any cutting tool can be used as long as it is one.

  The cutting means 60 shown in FIG. 5 includes two heat wires 61a and 61b and supports 62 and 62 that support both ends of the heat wires 61a and 61b. The support body 62 has a base 63 so that it can stand on its own. The heat wire 61 is connected to a power source (not shown) and generates heat when energized. As shown in FIG. 7, in the state where the support 62 of the cutting means 60 and the first storage / holding box 40 are placed on the same plane, the lower heating wire 61 a is the first molded part stored in the first storage / holding box 40. 20 and the rod-shaped connecting material 10 are positioned at the connecting portion, and the upper heat wire 61 b is positioned at the connecting portion between the rod-shaped connecting material 10 and the second molded part 30.

  As shown in the figure, as shown in the drawing, the first storage holding box 40 and the cutting means 60 that store a large number of molded members B are placed on the same plane, and the heat wires 61a and 61b are energized, for example, In FIG. 8, when the cutting means 60 is moved horizontally in the right direction or the first storage holding box 40 is moved horizontally in the left direction, the first molded component 20 in the group BS of a large number of molded members B The connecting portion between the rod-shaped connecting material 10 and the connecting portion between the rod-shaped connecting material 10 and the second molded part 30 are simultaneously cut by the heat wires 61a and 61b, and are separated from each other.

  When the four second holding and holding boxes 50a to 50d are lifted after the cutting is finished, the groups 30a to 30d of the second molded parts 30 are in frictional contact with the inner surfaces of the second holding and holding boxes 50a to 50d. Therefore, the groups 30a to 30d of the second molded part 30 are taken out together with the second holding and holding boxes 50a to 50d. Thereafter, when the group of rod-shaped connecting members 10 is excluded, only a large number of the first molded parts 20 are left in the first accommodation holding box 40. As a result, the first molded part 20 and the second molded part 30 can be separated and collected without mixing them at all.

  What has been described above is an example of the cutting unit A and the forming member B for a forming member according to the present invention, and there are many other modifications. In the cutting unit A, the first holding / holding box 40 has been described as a single holding / holding box. However, although not particularly illustrated, a plurality of the first holding / holding boxes 50 corresponding to each group of the first molded parts 20 are illustrated. The first storage / holding box 40 may be configured by the first storage / holding boxes 40a to 40d. Similarly, the second storage / holding box 50 may be configured by one storage / holding box instead of the four separated second storage / holding boxes 50a to 50d. Although the cutting means 60 is illustrated as having two hot wires 61 a and 61 b at the top and bottom, it may be provided with only one hot wire 61. In that case, the height of the support 61 may be adjusted as appropriate, and two cutting operations may be performed.

  Further, in the illustrated example, the cutting means 60 is moved in the horizontal direction during the cutting operation, but the cutting means 60 is made to stand by placing the first storage holding box 40 and the second storage holding box 50 in an upright position. The cutting operation can also be performed by moving up and down.

  The molded member B to be cut is also an example shown in the drawing, and as described above, a molded member in which a plurality of molded parts are integrally formed and joined via a connecting body, Any member may be used as long as it can form a group BS of a plurality of molded parts aligned in the direction in which the formed members are overlapped by overlapping the members in one direction.

  FIG. 9 shows a molding member B1 having another shape. The molded member B1 has a board-like connecting body 10A, and a plurality of molded parts 20A are integrally formed on the outer peripheral portion thereof via a connecting portion C. Similarly to the above-described forming member B, this forming member B1 also overlaps a plurality of forming members in a state where the forming parts are aligned with each other by overlapping the portions of the connecting body 10A that is a disk-like body in the vertical direction. In addition, the thickness of the connecting body 10A and the thickness of each molded part 20A are set so that the molded parts aligned in the vertical direction are not in contact with each other in the superimposed state. In the illustrated example, the disk-shaped connecting body 10A is shown as a disk, but is not limited thereto, and may be rectangular or elliptical in plan view. In addition, position restricting means for restricting free movement in an overlaid state may be formed on the upper and lower surfaces of the connecting body 10A. The plurality of molded parts 20 </ b> A may have the same shape as illustrated, or may include different shapes.

  When the molded member B1 is cut and separated into the connecting body 10A and the molded part 20A, as shown in FIG. 10, an appropriate number of molded members B1 are stacked in the vertical direction, and each of the aligned molded parts 20A in the stacked molded member B1 is stacked. Each group is covered with an accommodation holding box 70 having a size and shape that can accommodate the group. In the covered state, the connecting portion C is exposed.

  The group BS of the molded members obtained by stacking the molded members B1 in that state is cut and separated into the connecting body 10A and the molded part 20A using the cutting means 80. The cutting means 80 includes a substrate 81, five support columns 82 standing on the substrate 81, and a heat wire 83 spanned between the support columns 82. The height of the column 82 is larger than the height of the group BS of molding members, and the distance from the substrate 81 to the heat ray 83 is also larger than the height of the group BS of molding members. The hot wire 83 is set so as to be positioned at the connecting portion C in the molded member group B.

  As shown in FIG. 10 and FIG. 11, the cutting means 80 is placed on the base in an upright posture, and the hot wire 83 passes through the part BS of the group BS of the molding member from above the base BS. By gradually dropping in the vertical direction, each molded member B1 is cut and separated into the connecting body 10A and the molded component 20A, and each separated molded member B1 is stored in the respective storage holding box 70. Although not shown, even if the group of molded members BS is placed on the base and the cutting means 80 is dropped in the same manner, the separation and separation of the connecting member 10A and the molded component 20A of each molded member B1 are performed. Each formed member B1 can be housed in the housing box 70. Of course, it is good also as a structure which moves the heat ray | wire 83 to a perpendicular direction.

A: Cutting unit,
B, B1 ... molding member,
BS: a group of molded members,
10, 10A ...
20, 20A, 30 ... molded parts,
40 ... first container holding box,
50 ... second storage box,
60, 80: Cutting members.

Claims (7)

A cutting unit for cutting and separating a molded member in which a plurality of molded parts are integrally formed and connected via a connecting body into the connecting body and the molded part,
By aligning multiple molded parts in one direction, align multiple molded parts groups aligned in the direction of overlapping the molded parts with the joints between each of the joints and molded parts exposed. One or a plurality of storage holding boxes to be stored while being held in a state;
Cutting means for cutting the connecting portion,
By moving either one or both of the container holding box and the cutting means, the molded part and the connecting body are cut and separated, and the molded part stored in the container holding box is stored and held in the box. A cutting unit for a molded member. A plurality of molded parts having different shapes are integrally formed and joined to the joint body of the molded members,
The cutting unit for a molded member according to claim 1, wherein the storage and holding box stores and holds a group of molded parts having the same shape.   The cutting unit for a molded member according to claim 1 or 2, wherein the connecting body is a rod-shaped body, and a plurality of molded parts are integrally formed along the longitudinal direction on at least two side portions.   A plurality of first molded parts having the same shape are formed along the longitudinal direction of one side portion, and a plurality of first shapes having the same shape are formed along the longitudinal direction of the other side portion. The cutting unit for molded members according to claim 3, wherein two molded parts are molded.   The cutting unit for a molded member according to claim 1 or 2, wherein the connecting body is a disk-shaped body, and a molded part is integrally formed at least at two locations on the outer peripheral portion.   The cutting unit for a molded member according to any one of claims 1 to 5, wherein the cutting means includes a plurality of cutting members capable of simultaneously cutting a plurality of connecting portions.   7. The molded member according to claim 1, wherein the molded member is a foamed resin molded member, and the cutting means is composed of one or a plurality of heat rays and a plurality of pillar members that bridge the heat rays. The cutting unit for molded members as described in any one of Claims.

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