JP2011230313A - Device for supporting rotary mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for supporting rotary molds capable of reducing a load due to an error of mold registering position, which stems from a mold or the sliding part of the device for supporting rotary molds.SOLUTION: The device 10 for supporting rotary molds serves as a unit for an injection molding device which can form a molded object, using rotary molds 12 and 13 to be combined with a mold mounted onto at least one of the mutually opposed two mold plates 2 and 3. The rotary plates 12 and 13 are arranged between the mold plates 2 and 3 and rotated around a rotating shaft. In addition, the device 10 for supporting rotary molds is constituted of a rotary mold mounting part 10a onto which the rotary plates 12 and 13 are mounted and a support part 10b which supports the rotary mold mounting part 10a, both being immobilized at a plurality of spots through an elastic element.

Description

  The present invention relates to rotation of an injection molding apparatus that forms a molded product using a rotating mold that is disposed between two opposing mold mounting boards and combined with a mold that is mounted on at least one of these mold mounting boards. The present invention relates to a mold support device.

  Various molding methods such as those characterized by molds for molding, or those characterized by molding equipment, as molding methods for multilayer molded products consisting of various combinations of different materials, same materials, different colors, and same colors in resin molded products It has been known. One of them is a molding method in which a multilayer molded product is molded using a set of molds including a fixed mold, a movable mold, and a rotating mold rotated between the fixed mold and the movable mold.

  Patent Document 1 uses a mold including a fixed mold (fixed mold), a movable mold (movable mold), and a rotating mold (rotating mold) that rotates between the fixed mold and the movable mold. An injection molding machine (injection molding apparatus) for molding a multi-material molded product (multilayer molded product), the first injection device (injection unit) for injecting molten material in contact with the fixed mold, and the movable mold A second injection device for injecting the molten material in contact with the rotary plate, a rotary support device for supporting the rotary die from a fixed plate so as to be rotatable and movable in a movable movement direction, and the rotary die. A multi-material injection molding machine comprising a compression means (clamping means) for compressing the fixed mold and the movable mold is disclosed.

  Patent Document 2 discloses that a movable die plate (movable plate) with a movable die (movable die) attached and a fixed die plate (fixed plate) with a fixed die (fixed die) attached. A reversing base installed so as to be movable in the same direction as the movable die plate, and a mold capable of rotating 180 degrees on the reversing base and fitting the movable side mold and the fixed side mold on both sides to form a cavity. Rotating die plate (rotary disk) with a mold (rotating mold) attached, movable die plate mold opening / closing means for opening / closing the movable die plate, rotating die plate mold opening / closing means for opening / closing the rotating die plate, and mold In a two-material molding injection molding machine having mold clamping means for clamping the three sets of die plates simultaneously after closing and two sets of injection units for plasticizing and filling different resin materials, respectively, The mold clamping means are 3 sets of die play The hydraulic die clamping means is a movable die plate opening / closing means driven by an electric motor, and the rotating die plate opening / closing means is a rotating die plate opening / closing means driven by an electric motor. There is disclosed a two-material molding injection molding machine in which the rotating die plate rotating means is a rotational driving means driven by an electric motor attached to an inversion table.

JP 2006-168223 A JP 2008-080670 A

  In the multi-material injection molding machine of Patent Document 1, the members extended from the stationary platen that supports the rotating mold (rotating mold) are separate upper and lower bodies, and the rotating molds are assembled separately on the stationary platen. In addition, it is difficult to make the upper and lower rotation center axes concentric, and there is a possibility that problems such as galling and wear of the bearing portion occur during rotation of the rotation type.

  Next, in the two-material injection molding machine disclosed in Patent Document 2, the rotation (rotation mold) that is attached to the movable side mold and the fixed side mold to form a cavity (rotation mold) is mounted on both sides of the injection molding machine. The die plate is configured to be mounted on the reversing table so as to be rotatable by 180 degrees, and there is no bearing for supporting the rotating shaft above the rotating die plate. There is no possibility of problems such as galling or wear of the bearing portion due to the poor concentricity of the rotation center shaft. However, Patent Document 1 has a common form in which a rotating mold disposed in the middle of a fixed mold and a movable mold is rotated, and a rotating mold that is matched to each of the fixed mold and the movable mold is replaced. And Patent Document 2 have the following problems.

  In the case of molding by a general fixed mold and movable mold, these two molds are attached to the mold clamping means with one divided surface being matched with each other. There is no big problem with the combination. However, when using a rotating mold such as Patent Document 1 and Patent Document 2, the three molds of the fixed mold, the movable mold, and the rotating mold have at least two divided surfaces. Even if these two split surfaces are attached to the mold clamping means in a state where the molds are aligned, the intermediate rotary mold is rotated in accordance with the operation of the injection molding apparatus, and the mold is aligned with each of the fixed mold and the movable mold. The rotating molds are replaced from the state where they are attached to the clamping means on the respective divided surfaces. At this time, the rotating mold and its rotating shaft are fixed to the fixed mold or the movable mold due to the processing tolerance and assembly tolerance of each component related to its position, concentricity, parallelism, etc. It is difficult to arrange the movable mold in a perfect ideal position without any error, and the arrangement must include a predetermined amount of various errors. Therefore, it is inevitable that an error occurs in the mold alignment position between the rotating mold before and after the rotation and the other molds with the rotation of the rotating mold.

  Here, with reference to FIG.12 and FIG.13, a mode that an error arises in the mold | die alignment position of the rotation mold before and behind rotation and another mold with rotation of a rotation mold is demonstrated. In the drawings, reference numeral 2 is a fixed platen, 7 is a fixed die, 12 and 13 are rotary dies, and these rotary dies 12 and 13 are attached to the rotary plate 11. Further, 8 is a movable mold, 3 is a movable platen, and 4 is a mold clamping means. First, FIGS. 12 (a) and 12 (b) are schematic plan views of a general injection molding apparatus using a rotating mold at the time of mold clamping, and the rotational axis position of the rotating mold is rotated. The case where there is an error on a plane perpendicular to the axis is shown. As shown in FIG. 12 (a), the actual rotation axis 11a 'is shifted by a dimension X in the longitudinal direction of the injection molding apparatus and a dimension Y in the direction orthogonal to the longitudinal direction with respect to the normal rotation axis position 11a. Shall. When the turntable is rotated 180 ° after the mold is opened, the mold alignment positions of the rotary molds 12 and 13 with respect to the movable mold 8 and the fixed mold 7 are set in the longitudinal direction of the injection molding apparatus as shown in FIG. Is shifted by a dimension X ′ and a dimension Y ′ in a direction perpendicular to the longitudinal direction. When the mold is clamped in this state, the turntable 11 to which the rotary molds 12 and 13 are attached is a guide pin of the mold and a guide pin hole (not shown) corresponding to the length in the direction indicated by the arrow L. Are forcibly moved to a normal mold alignment position and clamped.

  Next, FIG. 12 (c) and FIG. 12 (d) are schematic side views at the time of clamping of a general injection molding apparatus using a rotary mold, and the rotary shaft of the rotary mold is injection molded. The case where it is not parallel to the fixed mold 7 and the movable mold 8 on the vertical plane in the longitudinal direction of the apparatus is shown. As shown in FIG. 12C, it is assumed that the actual rotation shaft 11b 'is inclined toward the fixed mold 7 by an angle θ with respect to the regular rotation shaft 11a. When the turntable is rotated 180 ° after the mold is opened, the angle of the mold matching surface of the rotary molds 12 and 13 with respect to the movable mold 8 and the fixed mold 7 is θ ′ as shown in FIG. When the mold is clamped in this state, the turntable 11 to which the rotary dies 12 and 13 are attached is moved toward the movable platen 3 as shown by an arrow M, and a guide pin of a mold (not shown) by an angle θ ′. Then, it is guided to the guide pin hole and the like, and is forcedly rotated to a normal mold alignment position and clamped.

  Next, FIG. 13 (a) is a schematic side view at the time of mold clamping of a general injection molding apparatus using a rotating mold, and FIG. 13 (b) is an AA arrow in FIG. 13 (a). FIG. As shown in FIG. 13B, it is assumed that the actual rotation shaft 11c 'is inclined to the right side on the plane orthogonal to the mold opening / closing direction by an angle θ with respect to the normal rotation shaft 11a. When the turntable is rotated 180 ° after the mold is opened, the angles of the rotary molds 12 and 13 with respect to the movable mold 8 and the fixed mold 7 are θ ″ as shown in FIG. 13B. When tightened, the turntable 11 to which the rotary molds 12 and 13 are attached, as indicated by an arrow N, is a guide pin and a guide pin hole of a mold (not shown) on the left side by an angle θ ″. Etc., forcibly rotated to a normal mold alignment position and clamped.

  As described above, various errors related to the rotating mold and its rotating shaft with respect to the stationary mold and the movable mold are caused by the rotation position of the rotating mold before and after the rotating mold and another mold. Cause an error. The three molds are forcibly aligned with an error in the alignment position by guides such as guide pins and guide pin holes provided in the respective molds, and mold clamping force is applied to the molds. Tightened. As a result, a rotating mold that is not fixed to a highly rigid portion such as a fixed platen or a movable platen is moved by an error of the mold alignment position. As a result, the guide pin and guide pin hole of each mold, the rotation guide of the rotating part that rotates the rotating mold, the rotating shaft and its bearing part, and the rotating mold are moved in the mold opening and closing direction. A load other than a load assumed at the time of design and a rotational moment is applied to a sliding portion such as a linear guide portion that guides the supporting portion to be driven. If the rotational mold and its rotational axis position, concentricity, and parallelism with respect to other molds are bad, this load can be very large. For each guide pin and guide pin of each mold The sliding part such as the hole or the rotating guide of the rotating part, the rotating shaft and its bearing part, and the linear guide part must be larger in size and higher in rigidity. However, since the rotary mold support device having these sliding portions is disposed between the fixed platen and the movable platen and between the tie bars, it is required to be designed as small as possible within the dimensional constraints. There is a problem that it is difficult to increase the size and rigidity of the sliding portion as described above. In addition, when the size of the sliding portion and the securing of rigidity are not sufficient as described above, the service life of the sliding portion of these molds and rotating mold support devices is reduced, and the operating cost of the injection molding device is increased. There is a problem.

  The present invention has been made in view of the above-described problems. Specifically, it is possible to reduce a load caused by an error in a mold alignment position applied to a sliding portion of a mold or a rotating mold support device. An object of the present invention is to provide a rotating mold support device.

According to the first aspect of the present invention, as shown in claim 1, a mold is disposed between two opposing mold mounting boards, rotated around a rotation axis, and attached to at least one of the mold mounting boards. In a rotating mold support device of an injection molding apparatus that molds a molded product using a combined rotating mold,
A rotating mold support device, wherein a rotating mold mounting portion to which the rotating mold is mounted and a support portion that supports the rotating mold mounting portion are fixed at a plurality of locations via an elastic body. Achieved.

  That is, the rotation of the rotating mold due to the processing tolerance and assembly tolerance of each component related to the position of the rotating mold with respect to the stationary mold and the movable mold and its rotational axis, concentricity, parallelism, etc. Even if the rotating mold is forcibly moved by the clamping force at the time of clamping, the rotating mold mounting part Since the amount of movement is absorbed by the elastic body interposed in each fixed part at a plurality of fixed parts with the support part, it is caused by an error in the mold alignment position applied to the sliding part of the mold or the rotating mold support device. The load can be reduced.

  Furthermore, as shown in claim 2, it is preferable that the plurality of places are arranged on a circumference centering on the rotation axis, and the rotary mold support device according to claim 1 is characterized.

  A plurality of fixing parts of the rotating mold mounting part and the supporting part that supports the rotating mold mounting part are arranged on the circumference around the rotation axis, that is, at an equal distance from the rotation axis. The amount of deformation of the elastic body of the fixed portion arranged with the rotation axis along the moving direction is substantially smaller than the amount of movement in the vertical and horizontal directions, front and rear, or any combination of these generated in the rotating mold as the center. The amount of movement can be evenly distributed and absorbed almost uniformly without concentrating the amount of movement on the attachment site.

  Next, as shown in claim 3, the rotary mold mounting portion is positioned with respect to the support portion between the rotary mold mounting portion and the support portion, and is slidable in the rotation axis direction. The rotating die support apparatus according to claim 1 or 2, further comprising positioning means.

  By such positioning means, the rotating mold mounting portion is positioned with respect to the support portion except during mold clamping, that is, every time the mold is opened. Since the positioned reference position is the same regardless of before and after the rotation of the rotating mold, the amount of movement of the rotating mold in the process from mold opening to mold clamping is the same as that after the mold alignment position at the time of mold clamping before rotation. Since the amount of movement from the reference position to the mold alignment position at the time of mold clamping is not the amount of movement to the mold alignment position at the time of mold clamping, the amount of movement of the rotating mold can be reduced. Further, when the mold is clamped, the positioning means is moved to the support portion side in the rotation axis direction, so that the movement of the rotation mold in any direction is not hindered.

  Next, as shown in claim 4, a plurality of distance measuring means 1 for measuring the distance in the direction of the rotation axis of the rotary mold mounting portion with respect to the support portion are arranged on a circumference centered on the rotation axis. The rotating mold support apparatus according to any one of claims 1 to 3, wherein the rotating mold support apparatus is provided.

  When the distance measuring means 1 is arranged in this way, by comparing the measured values of the distance measuring means 1 at the time of clamping before and after the rotation of the rotating mold, the mold clamping time generated in the rotating mold due to the error of the mold alignment position The amount of movement in the direction of the rotation axis and the position where the amount of movement is generated can be objectively confirmed by numerical values, and as a result, the amount of movement of the rotating mold in the direction of the rotation axis and the direction of inclination can be estimated. .

  Next, as shown in claim 5, distance measuring means 2 for measuring a distance in the radial direction about the rotation axis of the rotary mold mounting portion with respect to the support portion is a circle centered on the rotation axis. The rotating die supporting device according to claim 1, wherein a plurality of the rotating die supporting devices are arranged on the circumference.

  When the distance measuring means 2 is arranged in this way, by comparing the measured values of the distance measuring means 2 when the mold is clamped before and after the rotating mold is rotated, the mold is clamped that occurs in the rotating mold due to the error in the mold alignment position. The amount of movement in the radial direction around the rotation axis and the position where the amount of movement is generated can be objectively confirmed numerically. As a result, the movement direction on the plane perpendicular to the rotation axis of the rotating mold can be determined. Can be guessed.

  Next, as shown in claim 6, the base part to which the rotating mold attaching part and the support part are attached is at least one of the locate ring hole part and the mold attaching surface of the mold attaching board. 6. The rotating mold support apparatus according to claim 1, wherein the rotating mold supporting apparatus has a shape that can be positioned between the mold mounting plates with respect to one side.

  By being configured in this manner, the rotary mold support device has a shape part that can be positioned on its base part aligned with a locating ring hole part of at least one of two mold mounting boards (usually a fixed board), The mold alignment position in the direction perpendicular to the height direction of the rotating mold and the mold opening / closing direction with respect to the fixed mold and the movable mold can be accurately and easily determined. In addition, by aligning the shapeable portion of the base portion with the mold mounting surface of at least one of the two mounting boards (usually the fixed board), the parallelism of the rotating mold with respect to the fixed mold and the movable mold is set. It can be ensured accurately and easily. As a result, it is possible to further reduce the errors in the alignment positions of the fixed mold and the movable mold and the rotating mold, and further reduce the load due to the errors in the alignment positions.

A rotating mold support device according to the present invention is disposed between two opposing mold mounting boards, rotated around a rotation axis, and combined with a mold attached to at least one of the mold mounting boards. In a rotating mold support device of an injection molding device that molds a molded product using a mold,
Since the rotating mold mounting portion to which the rotating mold is mounted and the support portion that supports the rotating mold mounting portion are fixed at a plurality of positions via an elastic body, the mold and the rotating mold support device It is possible to reduce a load due to an error in a mold alignment position applied to the sliding portion.

It is the schematic which shows the injection molding apparatus which concerns on Example 1 of this invention. It is a schematic side view which shows the rotary mold support apparatus which concerns on Example 1 of this invention. It is a top view in the AA arrow of FIG. It is a longitudinal cross-sectional view in the BB arrow of FIG. It is the schematic which shows absorption of the movement amount of a rotation metal mold | die by the deformation | transformation of the elastic body which concerns on Example 1 of this invention. It is a schematic side view which shows the rotary mold support apparatus which concerns on Example 2 of this invention. It is a top view in the AA arrow of FIG. It is a longitudinal cross-sectional view in the BB arrow of FIG. It is a schematic longitudinal cross-sectional view which shows the movement of the rotating shaft direction of the positioning means by the movement of the rotary metal mold | die which concerns on Example 2 of this invention. It is a schematic longitudinal cross-sectional view which shows arrangement | positioning of the distance measurement means of the rotary die support apparatus which concerns on Example 3 of this invention. It is the schematic which shows the rotating die support apparatus which concerns on Example 4 of this invention. It is a figure which shows a mode that an error arises in the type | mold alignment position of the rotation mold before and behind rotation and another mold with rotation of a rotation mold. FIG. 13 is a diagram illustrating a state in which an error occurs in a mold alignment position between a rotating mold before and after rotation and another mold as the rotating mold rotates, as in FIG. 12.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings.

  A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic view showing an injection molding apparatus according to Embodiment 1 of the present invention. FIG. 1A is a schematic longitudinal sectional view, and FIG. 1B is a schematic plan view. FIG. 2 is a schematic side view showing the rotary mold support device according to the first embodiment of the present invention. FIG. 3 is a plan view taken along arrow AA of FIG. FIG. 4 is a longitudinal sectional view taken along the line BB in FIG. FIG. 5 is a schematic diagram illustrating absorption of the moving amount of the rotating mold due to deformation of the elastic body according to the first embodiment of the present invention. FIG. 5A is a vertical cross-section in a state in which the rotational mold mounting portion 10a is inclined to move upward in the rotational axis direction by a dimension α (alpha), and FIG. 5B is rotated by a dimension β (beta). FIG. 5C is a schematic overall plan view of FIGS. 5A and 5B, and FIG. 5D is an XY view of FIG. 5C. It is a schematic side view in an arrow view.

  First, the injection molding apparatus 1 to which the rotary mold support apparatus 10 is attached will be described. As shown in FIG. 1, the fixed mold 7 is positioned by the locate ring hole 9 of the fixed platen 2 and fixed to the fixed platen 2, and the fixed platen 2 is fixed to the machine base unit 6. The movable platen 3 to which the movable mold 8 is attached so as to face the fixed platen 2 is guided by tie bars 5 extended from the four corners of the fixed platen 2 and can be moved in the mold opening and closing direction by the mold clamping means 4. The machine base unit 6 is disposed. A rotating mold support device 10 is disposed between the fixed platen 2 and the movable platen 3 facing each other.

  Next, the rotating mold support device 10 will be described. As shown in FIG. 1, the base part 16 is being fixed to the machine base part 6 of the injection molding apparatus 1 via the height direction adjustment means 17 which can adjust a height direction. A set of slide rails 15a arranged in parallel to the mold opening / closing direction is fixed on the base portion 16, and a support portion 10b is provided on the slide rail 15a via a slide block 15b combined with the slide rail 15a. It is supported so as to be movable in the mold opening and closing direction. The support portion 10b is arbitrarily moved in the mold opening / closing direction by the slide driving means 14 fixed to the base portion 16. As the height direction adjusting means 17, a known adjusting means using a jack-up bolt, a taper liner or the like is employed. Further, the slide rail 15a and the slide block 15b employ linear motion guide parts having necessary accuracy, strength, and rigidity such as linear guides, and the slide drive means 14 is composed of a combination of a ball screw, a ball screw nut, a servo motor, and the like. Known drive means such as electric drive means and hydraulic drive means using a hydraulic cylinder are appropriately employed.

  As shown in FIGS. 2 and 3, a circular rotating guide rail 18a is fixed on the support portion 10b. On the rotating guide rail 18a, a rotating mold mounting portion 10a having a rotating plate 11 on which the rotating mold 12 and the rotating mold 13 are mounted is supported by a rotating guide block 18b combined with the rotating guide rail 18a. 10b is supported rotatably. A rotation driving means 19 is fixed to the support portion 10b, and the rotation axis of the rotation mold attachment portion 10a is arbitrarily rotated through a connecting component 20 that allows eccentricity and inclination. The rotation guide rail 18a and the rotation guide block 18b employ circular guide parts having necessary accuracy, strength and rigidity, and the rotation drive means 19 is an electric drive means such as a servo motor, a hydraulic drive means such as a hydraulic motor, etc. A known drive means is employed as appropriate. Further, in order to facilitate mold replacement, it is preferable that the turntable 11 is configured to be detachable from the base 25 of the rotary mold mounting portion 10a in a state where the rotary molds 12 and 13 are mounted.

  As shown in FIG. 3, the rotary mold mounting portion 10 a is fixed to the rotary guide block 18 b at a plurality of locations that are evenly arranged on the circumference around the rotary shaft 11 a in the circular base portion 25. . As shown in FIG. 3, these fixed parts are arranged symmetrically with respect to the center line of the injection molding apparatus orthogonal to the rotation shaft 11a and opposed to each other with respect to the rotation shaft 11a, as will be described later. Needless to say, this is preferable from the viewpoint of absorbing the amount of movement of the rotating mold and mechanical balance.

  Details of these fixing parts (longitudinal sectional view taken along arrow BB in FIG. 3) are shown in FIG. As shown in FIG. 4, a mounting hole 25a is provided in the base 25 of the rotating mold mounting part 10a, and the bolt 21 through which the spacer 24 and the thick washer 22 pass is rotated so as to pass through the mounting hole 25a. It is fastened to the guide block 18b. The mounting hole 25a is larger than the outer diameter of the spacer 24, and does not interfere with the movement of the base 25 of the rotating mold mounting portion 10a with respect to the spacer 24 fixed to the rotating guide block 18b. One or a plurality of disc springs 23 move between the upper surface of the base 25 through which the spacer 24 penetrates and the thick washer 22, and between the rear surface of the base 25 and the upper surface of the rotation guide block 18, respectively. It is arranged as an elastic body for absorbing the amount. These disc springs 23 support the load of the rotating mold mounting portion 10a including the rotating molds 12 and 13 in the operation of the normal injection molding apparatus, and are attached to the rotating mold during the operation except during the mold clamping. Needless to say, the spring 10 has rigidity and a spring constant that can counter an upward force acting on the portion 10a.

  Next, as an example of absorbing the amount of movement of the rotating mold, a case where the rotating mold is inclined by clamping will be described. In this case, as shown in FIG. 5, the rotating mold mounting portion 10a is also inclined. FIG. 5A shows a state in which the base portion 25 of the rotary mold mounting portion 10a is tilted (moved) upward in the rotational axis direction by a dimension α (alpha) from the normal position 26. Since the mounting hole 25a provided in the base 25 is larger than the outer diameter of the spacer 24, the base 25 does not disturb the tilting (raising) operation. Further, the disc spring 23 disposed between the upper surface of the base portion 25 and the thick washer 22 is compressed, and the amount of movement of the rotary die mounting portion 10a in the direction of the rotation axis is absorbed. It is possible to reduce loads such as a pulling force and a bending moment that directly act between the mold, the rotation guide block 18b, and the rotation guide rail 18a.

  FIG. 5B shows a state in which the base 25 of the rotary mold mounting portion 10a is tilted (moved) downward from the normal position 26 by the dimension β (beta) in the rotational axis direction. Similarly to FIG. 5A, the disc spring 23 disposed between the upper surface of the rotation guide block 18 and the rear surface of the base 25 is compressed, and the amount of downward movement of the rotary mold mounting portion 10a is absorbed. The As described above, since the upward and downward movement amount of the rotating mold including the tilt is absorbed, the load due to the error of the mold alignment position applied to the sliding portion of the mold and the rotating mold support device is reduced. be able to.

  FIG. 5C is a schematic plan view summarizing the states of FIG. 5A and FIG. 5B, and FIG. 5D is a view taken along the line XY in FIG. As shown in FIG. 5 (c), these fixed portions are arranged at an equal distance r from the rotation shaft 11a, symmetrical to the center line of the injection molding apparatus orthogonal to the rotation shaft 11a, and on the rotation shaft 11a. On the other hand, when arranged so as to face each other, the moving amount of the rotating die (rotating die attaching portion 10a) that moves around the rotating shaft 11a during clamping is relative to the support portion 10b in the moving direction. It is absorbed approximately half by the elastic body that is located along the rotating shaft 11a and that is opposed to the mounting part. That is, with respect to the fixing portions 25X and 25Y that are opposed to each other with the rotation shaft 11a interposed therebetween, the base 25 in the fixing portion 25X is inclined upward in the rotation axis direction by the dimension α from the normal position 26 as shown in FIG. 5B, when the base 25 is inclined downward in the direction of the rotation axis by the dimension β from the normal position 26, the fixed portions X and Y are separated from the rotation axis 11a by an equal distance r across the rotation axis 11a. The movement amount α is equal to the movement amount β. For ease of explanation, assuming that the straight line connecting the fixed portions 25X and 25Y coincides with the center line of the injection molding apparatus, this means that the turntable 11 is connected to the injection molding apparatus as shown in FIG. On the vertical plane on the center line, the rotary shaft 11a ′ that was in a vertical state when the mold was opened is guided from the vertical shaft 11a by an angle θ ′ to a guide pin and a guide pin hole (not shown) of the mold, This is a state in which the mold is forcibly rotated and clamped as indicated by an arrow P at a normal mold alignment position. It means that it can be dispersed and absorbed almost uniformly without concentrating on a part of the attachment site. Furthermore, it goes without saying that such an arrangement of the fixing parts is excellent in mechanical balance. Although not shown, the amount of movement on a plane orthogonal to the rotation axis can be absorbed by the space between the mounting hole 25a and the spacer 24. The specifications of the bolt 21, the thick washer 22, the disc spring 23, the spacer 24, and the mounting hole 25a are appropriately designed in consideration of the target injection molding apparatus, the rotational mold, the number of mounting parts, the arrangement circumferential diameter of the mounting parts, and the like. It only has to be done.

  A second embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a schematic side view showing a rotary mold support apparatus according to Embodiment 2 of the present invention. FIG. 7 is a plan view taken along arrow AA of FIG. FIG. 8 is a longitudinal sectional view taken along the line BB in FIG. FIG. 9 is a schematic longitudinal sectional view showing the movement of the positioning means by the movement of the rotary mold according to the second embodiment of the present invention. FIG. 9A shows a form in which the positioning means is moved by a compression coil spring, and FIG. 9B shows a form in which the positioning means is moved in the direction of the rotation axis by hydraulic pressure.

  Since the injection molding apparatus 1 to which the rotary mold support apparatus 10 of the second embodiment is attached is the same as that of the first embodiment, the description of the injection molding apparatus 1 is omitted. For the sake of simplicity, the same reference numerals as those in the first embodiment are used for portions having the same functions as those in the first embodiment, and the description thereof is omitted. The difference between the second embodiment and the first embodiment is that a general-purpose bearing, a rotary shaft component, and a gear are combined to rotatably support the rotary mold mounting portion 10a, and the rotary mold mounting portion 10a and its The point which used the compression coil spring for the elastic body of the fixed part with the support part 10b, and the point which added the positioning means which can position the rotary die attachment part 10a with respect to the support part 10b, and can be slid in the rotating shaft direction It is. The rest of the configuration of the rotary mold support device 10 is basically the same as that of the first embodiment, and only the differences from the first embodiment will be described.

  As shown in FIG. 6, the rotary shaft component 38 having a flange portion for mounting the rotary shaft and the rotary mold mounting portion 10a can be rotated to the support portion 10b via the general-purpose bearing 31 held by the support portion 10b. It is supported by. A gear 32 a is fixed to the lower end of the rotary shaft component 38, and is combined with a gear 32 b attached to the output shaft of the rotary driving means 19 fixed to the support portion 10 b, and the rotary mold is attached via the rotary shaft component 38. The part 10a is arbitrarily rotated. Since the general-purpose bearing 31 is opposed to the axial load in the second embodiment, a thrust bearing is adopted. However, due to required rotational accuracy, allowable load, mechanical constraints for holding the bearing in the support portion 10b, and the like, The type of bearing, the support structure for the rotating mold mounting portion 10a using these bearings, and the like may be appropriately selected and designed. As the gears 32a and 32b, gears having an appropriate reduction ratio are appropriately selected based on required driving force, rotational speed, and the like, but known power transmission means using a chain, a belt, or the like may be employed. As the rotation driving means 19, a known driving means is appropriately employed, such as an electric driving means such as a servo motor or a hydraulic driving means such as a hydraulic motor. Similarly to the first embodiment, the turntable 11 is preferably configured to be detachable from the base of the rotating mold mounting portion 10a in a state where the rotating molds 12 and 13 are mounted.

  As shown in FIG. 7, the rotating mold mounting portion 10 a is fixed at a plurality of locations that are evenly arranged on the circumference around the rotating shaft 11 a in the circular base portion 25. It is the same as in the first embodiment that these fixed portions are preferably arranged so as to be symmetrical to the center line of the injection molding apparatus orthogonal to the rotation shaft 11a and to face each other with respect to the rotation shaft 11a. However, in the second embodiment, as shown in FIG. 8 (a longitudinal sectional view taken along arrow BB in FIG. 7), the spacer 24 and the thick washer so as to pass through the mounting hole 25a of the rotary mold mounting portion 10a. The bolt 21 through which the screw 22 is passed is fastened to the flange portion of the rotary shaft part 38, not to the rotary guide block 18b. The compression coil spring 33 is not the disc spring 23 but the compression coil spring 33 between the upper surface of the base 25 through which the spacer 24 penetrates and the thick washer 22 and between the rear surface of the base 25 and the upper surface of the flange portion of the rotary shaft component 38. It is arranged as an elastic body for absorbing the amount of movement of the rotating mold. These compression coil springs support the load of the rotating mold mounting part 10a including the rotating molds 12 and 13 in the operation of the normal injection molding apparatus, and the rotating mold mounting part during the operation excluding the time of mold clamping. The rigidity and spring constant that can counter the upward force acting on 10a are the same as in the first embodiment. Thus, even when a compression coil spring is used for the elastic body of the fixed part, as shown in FIG. 5 of the first embodiment, it is possible to absorb the amount of movement of the rotating mold, that is, the rotating mold mounting portion. Compared with a disc spring, a compression coil spring can support a larger load, and the spring constant as a specification is more accurate, and there are many variations of external dimensions and spring constants available on the market. It can also be used for a rotating mold support device used for a medium-sized mold to a large-sized injection molding apparatus.

  Further, in the second embodiment, there is provided positioning means 35 slidable in the direction of the rotation axis for positioning the rotation shaft 11 a of the rotary die mounting portion 10 a with respect to the support portion 10 b, that is, the rotation center of the rotation shaft component 38. ing. As shown in FIG. 8, the tip of the positioning means 35, which is pushed upward from the rotation center of the flange portion of the rotary shaft part 38 by the compression coil spring 36, forms the convex arc shape of the rotation of the back surface of the base 25. It is pressed against the same concave arc-shaped portion 35a provided at the center. Similar to the compression coil spring 33 in the fixed part, the compression coil spring 36 that pushes up the positioning means 35 includes the rotary molds 12 and 13 together with the compression coil spring 33 in the fixed part during the operation except during mold clamping. The load of the mounting portion 10a is supported, and the rotating shaft 11a of the rotating mold mounting portion 10a moved at the time of mold clamping is positioned at the rotation center of the rotating shaft component 38 every time the mold is opened by the compression coil spring 36.

  FIG. 9A shows a state in which the base 25 of the rotary mold mounting portion 10a has moved from the normal position by a dimension γ (gamma) in the direction indicated by the arrow 37 (on the plane orthogonal to the rotation axis). As shown in FIG. 9A, the positioning means 35 is moved in the direction indicated by the arrow 39 (downward in the rotational axis direction) by the movement of the base 25, and the compression coil spring 36 is compressed. When the mold clamping state is released, the force that moved the base 25 in the direction indicated by the arrow 37 is also eliminated, so that the positioning means 35 is pushed up by the compressed compression coil spring 36 and the base 25 is positioned relative to the support portion 10b. The Similarly, the positioning means 35 is also moved in the direction of the rotational axis with respect to the downward direction or the inclination of the rotational mold mounting portion 10a during mold clamping.

  Thus, the reference position at which the rotating mold mounting portion 10a is positioned with respect to the support portion 10b every time the mold is opened is the same regardless of before and after the rotating mold is rotated. As a result, the amount of movement of the rotating mold in the process from mold opening to mold clamping is not the amount of movement from the mold alignment position at the time of mold clamping before rotation to the mold alignment position at the time of mold clamping after rotation. Since the amount of movement from the reference position to the die alignment position at the time of mold clamping is reached, the amount of movement of the rotating mold can be reduced. Further, at the time of mold clamping, the compression coil spring 36 supporting the positioning means is compressed by the movement of the rotating mold, and the positioning means is moved in the direction of the rotation axis, so that the movement of the rotating mold is not hindered.

  The tip of the positioning means 35 has a convex arc shape, and the same concave arc shape portion 35a is provided at the rotation center of the back surface of the base 25 to which the tip is pressed. The shape of the positioning means 35 is moved downward in the direction of the rotational axis only by movement on a plane orthogonal to the rotational axis 10a, or the rotational mold is mounted by moving the positioning means 35 upward in the rotational axis direction. Any shape may be used as long as the portion 10a is positioned. In addition, these positioning parts have automatic greasing means that reduce sliding resistance to facilitate positioning, wear resistance processing that assumes contact for positioning, and a structure that allows only the contact part to be easily replaced. If employed, the positioning accuracy as described above can be maintained for a long time.

  Further, as a form in which positioning of the rotating mold mounting portion 10a, which is performed each time the mold is opened, can be performed more reliably, the positioning means 35 'as shown in FIG. 9B is not an elastic body such as the compression coil spring 36. Further, it is possible to use a hydraulic cylinder, a pneumatic cylinder, or a positively moving form using various driving means combining a ball screw and a servo motor. The positioning means 35 'has an acute convex conical shape at the tip thereof, and the rotation center of the back surface of the base 25 to which the distal end is pressed also has the same acute concave conical shape 35a'. The positioning means 35 'is connected at its rear end to a piston rod 36' of a hydraulic cylinder built in the rotary shaft part 38, and is configured to be movable in the direction of the rotary shaft. Here, as shown in FIG. 9B, it is assumed that the base 25 of the rotary mold mounting portion 10a is moved from the reference position by a dimension γ on a plane orthogonal to the rotation axis by clamping. At the time of mold clamping, the positioning means 35 ′ that has been moved downward in the rotational axis direction of the rotary shaft part 38 so as not to disturb the movement of the rotary mold moves upward in the rotational axis direction indicated by the arrow 39 ′ in accordance with the mold opening operation. Is done. If a part of the conical surface at the tip of the positioning means 35 ′ contacts the inner surface of the acute concave conical shape 35 a ′ provided at the center of rotation of the back surface of the base 25 during the movement, the positioning means 35 ′ is continued thereafter. With the upward movement in the direction of the rotation axis indicated by the arrow 39 ′, the base portion 25 is moved in the direction indicated by the arrow 37 ′ so as to position the rotation center at the rotation center of the rotation axis component 38. In this way, until the mold opening is completed or before the rotating mold is rotated, the rotating mold mounting portion 10a, that is, the rotating molds 12 and 13 are moved by the movement of the positioning means 35 ′ in the direction indicated by the arrow 39 ′. Each time the mold is opened at the reference position, it is positioned with respect to the support portion 10b.

  In the embodiment shown in FIG. 9B in which the positioning means 35 ′ is positively moved using various driving means, the various types of driving means are built in the rotating shaft part 38, so that the structure of the rotating shaft part 38 is complicated. However, since the moving timing of the positioning means 35 ′ in the direction of the rotation axis, the moving speed in the direction of the rotation axis and the pushing force can be electrically controlled by a solenoid valve, a servo motor or the like, the rotary mold support device 10 can be controlled. In accordance with the size and cycle time of the injection molding apparatus to be attached, positioning of the rotary mold attaching portion 10a to the support portion 10b can be performed more reliably and with high accuracy. As a result, the amount of movement from the reference position of the rotary mold to the mold alignment position during mold clamping is stabilized, and the load caused by the error in the mold alignment position on the sliding part of the mold and the rotary mold support device is stabilized. Can be reduced.

  A third embodiment of the present invention will be described with reference to FIG. FIG. 10 is a schematic longitudinal sectional view showing the arrangement of the distance measuring means of the rotary mold support device according to the third embodiment of the present invention. The difference between the third embodiment and the second embodiment is that the distance measuring means 1 (reference numeral 41) measures the distance in the rotation axis direction of the rotary mold mounting portion 10a with respect to the support portion 10b, and the rotary metal with respect to the support portion 10b. A plurality of distance measuring means 2 (symbol 42) for measuring the distance in the radial direction around the rotation axis of the mold attaching portion 10a are arranged on the circumference around the rotation axis of the support portion 10b. . The rest of the configuration of the rotary mold support device 10 is basically the same as that of the second embodiment, and only the differences from the second embodiment will be described.

  As shown in FIG. 10, the distance measuring means 1 (reference numeral 41) for measuring the distance in the rotation axis direction of the rotary mold mounting portion 10a with respect to the support portion 10b is attached to the upper surface of the support portion 10b. Similarly, a distance measuring means 2 (reference numeral 42) for measuring a distance in the radial direction around the rotation axis of the rotating die mounting portion 10a with respect to the support portion 10b is attached to the upper surface of the support portion 10b. In addition, a detection target component 43 for measuring the distances by the distance detecting means 1 and 2 (reference numerals 41 and 42) is attached to the back surface of the outer periphery of the base 25 of the rotary mold attaching portion 10a. The distance detection means 1 and 2 (reference numerals 41 and 42) and the detection target component 43 are equally plural on the circumference around the rotation axis of the support portion 10b, similarly to the arrangement of the attachment parts in the second embodiment. Is arranged. These arrangements do not necessarily coincide with the arrangements of the respective fixed parts, but if possible, they are matched or evenly shifted, and the injection molding apparatus orthogonal to the rotation axis is arranged similarly to the arrangement of the attachment parts of the second embodiment. The second embodiment is the same as the second embodiment in that it is preferably arranged so as to be symmetrical with respect to the center line and to face each other with respect to the rotation axis.

  The distance detection means 1 and 2 (reference numerals 41 and 42) are appropriately selected from laser-type and ultrasonic-type distance measurement sensors, displacement sensors, and the like that can measure the distance to the object. These distance detection means may be attached to either the rotating mold attachment portion 10a or the support portion 10b as long as the target distance can be measured. However, since these distance detection means require electrical wiring, they can be rotated. It is preferable to attach to the support part 10b which does not. Further, these distance detection means may be attached to the support portion 10b side to directly detect the back surface of the base 25. However, the detection target component 43 as a detection target as shown in FIG. The material, shape, mounting position and adjustment method suitable for the distance can be freely selected and designed. Therefore, the degree of freedom of mounting and the detection accuracy of the distance detecting means 1 and 2 (reference numerals 41 and 42) to the support portion 10b can be increased. Can be improved.

  The distance measuring unit 1 (reference numeral 41) measures a distance Z in the rotation axis direction of the detection target component 43 (that is, the rotating mold) with respect to the support portion. The measured value Z when the rotating mold is at the reference position positioned at the time of mold opening is measured for each operation cycle, and measured values Z ′ and Z ″ before and after rotation at the time of mold clamping with the mold opening interposed therebetween. In comparison with the measured value Z, how much the base of the rotating mold mounting part 10a is raised in the rotational axis direction at the position when the mold is clamped or lowered relative to the reference position. For example, when the measured values Z ′ and Z ″ of the distance measuring means 1 (reference numeral 41) arranged on the circumference around the rotation axis are compared with + as the rising side and − as the falling side, for example, The line connecting the largest positions of the measured values Z ′ and Z ″ on the + side and the − side is the tilt direction of the rotating mold at the time of mold clamping, and it can be easily estimated that the line is inclined to the − side. The inclination angle from the arrangement circumference diameter of each distance measuring means 1 (reference numeral 41) and the amount of rise / fall It is possible to easily estimate not only the inclination of the rotating mold but also the situation where the entire rotating mold is raised or lowered in the direction of the rotation axis, and the measured value Z by the distance measuring means 1 (reference numeral 41). , Z ′, Z ″ measurement timing and comparison of each measurement value and inclination angle calculation are incorporated in the control program of the injection molding apparatus, one location of the measurement values Z ′, Z ″ of the distance measuring means 1 (reference numeral 41) in advance. Set the maximum permissible value, the maximum permissible tilt angle for the entire rotating mold, the maximum permissible ascent / descent amount, etc., and if these permissible values are exceeded, a warning will be issued or the injection molding device will be Control that automatically stops at the end of the operation cycle is also possible.

  The distance measuring means 2 (reference numeral 42) measures a radial distance R about the rotation axis of the detection target component 43 (that is, a rotating mold) with respect to the support portion. Similar to the distance measuring means 1 (symbol 41), the measured value R when the rotating mold is at the reference position positioned at the time of mold opening is measured every operation cycle, and the mold clamping is performed with the mold opening interposed therebetween. The measured values R ′ and R ″ before and after the rotation are also measured, and compared with the measured value R, the plane where the base of the rotating mold mounting portion 10a is orthogonal to the rotation axis at the position when clamping the mold relative to the reference position. In the above, it can be confirmed numerically how much it is moving in which direction, for example, arranged on the circumference around the rotation axis, with the circumference side (outside) as + and the rotation axis side (inside) as-. When the measured values R ′ and R ″ of the respective distance measuring means 2 (reference numeral 42) are compared, the line connecting the largest positions of the measured values R ′ and R ″ on the + side and the − side is the rotation during mold clamping. The direction of movement on a plane perpendicular to the rotation axis of the mold, and how much the entire rotation mold is in that direction It can be easily estimated whether the object is moving. The measurement timing of the measured values R, R ′, R ″ by the distance measuring means 2 (reference numeral 42) is compared with each measured value and the moving direction is calculated in the control program of the injection molding apparatus. If it is incorporated, the maximum permissible value and the maximum permissible movement amount at one location of the measured values R ′ and R ″ of the distance measuring means 2 (reference numeral 42) are set in advance, and a warning is issued when these permissible values are exceeded. It is the same as the distance measuring means 1 (reference numeral 41) that the injection molding apparatus can be controlled to automatically stop at the end of the operation cycle after warning.

  Further, by disposing both the distance measuring means 1 and 2 (reference numerals 41 and 42), the tilt direction and the tilt amount generated in the rotating mold due to the error of the mold alignment position, and the plane orthogonal to the rotation axis direction and the rotation axis direction. It is also possible to grasp the moving direction and the moving amount in a three-dimensional manner. By the combined use of the control as described above, the operation may be performed in a state where the load due to the error of the mold alignment position applied to the sliding portion of the mold or the rotating mold support device is managed within a certain range. Also, based on the three-dimensionally grasped tilt direction and tilt amount generated in the rotating mold due to the error of the mold alignment position, and the moving direction and moving amount on the plane orthogonal to the rotating shaft direction and the rotating shaft direction. By periodically correcting the mold alignment position of the rotating mold, it is possible to control the load at a higher level and reduce the load caused by the error of the mold alignment position on the sliding part of the mold and the rotating mold support device. The injection molding apparatus can be operated.

  Embodiment 4 of the present invention will be described with reference to FIG. FIG. 11 is a schematic view showing a rotary mold support apparatus according to Embodiment 4 of the present invention. Fig.11 (a) is a schematic side view, FIG.11 (b) is a schematic plan view in CC arrow of FIG. The difference between the first embodiment and the third embodiment in the fourth embodiment is that the base portion 56 that supports the rotary mold mounting portion 10a via the support portion 10b positions the fixed die 7 on the stationary platen 2. A positioning shape portion 56a is provided that can be positioned between the mold mounting plates with reference to the locate ring hole 9 and the mold mounting surface 2a of the stationary platen 2. Since the other configuration of the rotary mold support device 10 may be the same as any of the first to third embodiments, only differences from the first to third embodiments will be described.

  Usually, the die mounting surface of the fixed platen 2 is provided with a locate ring hole portion 9 for positioning the fixed die 7. As shown in FIG. 11 (a), the locating ring hole 9 of the fixed platen 2 can be used to position the locating ring hole 9 of the fixed platen 2 with substantially the same accuracy as the fixed mold 7. A positioning shape portion 56a having a locating ring convex portion is fixed. And the positioning shape part 56a has comprised the strong integral structure by the base part 56 of the rotary die support apparatus 10, and the rib 56b. On the surface of the positioning shape portion 56a opposite to the surface on which the convex portion for locating ring is provided, the same locating ring hole 59 as the locating ring hole portion 9 of the fixed platen 2, and a known gold such as a T groove not shown. A mold mounting shape is provided, and the fixed mold 7 is mounted in the same manner as the mold mounting surface 2 a of the fixed platen 2. Further, in the rotary mold support device 10, the mold opening / closing of the support part 10b by the slide rail 15a and the slide block 15b on the surface orthogonal to the mold opening / closing direction on the basis of the locating convex part of the positioning shape part 56a. The fixed mold 7 of the positioning shape portion 56a is secured with reference to the surface on which the locating ring convex portion of the positioning shape portion 56a is provided, such as the direction movement accuracy and the rotation axis position accuracy of the rotating die mounting portion 10a. Parallelism of the mounting surface, the rotating shaft of the rotating mold mounting portion 10a, the mold mounting surface of the mounting board 11, and the like is ensured.

  Furthermore, as shown in FIG. 11 (b), if the entire width of the frame portion 56 of the rotary mold support device 10 including the height direction adjusting means 17 is designed to be smaller than the distance between tie bars, a crane or the like can be used. The rotary mold support device 10 can be easily detached between the fixed plate and the movable plate from the upper part of the injection molding device. The rotating mold support device 10 lifted by using a crane or the like is lowered from the upper part of the injection molding device 1 between the fixed platen 2 and the movable platen 3, and the locating ring projection of the positioning shape portion 56a remains in the lifted state. The basic positioning is completed simply by fitting the portion into the locating ring hole 9 of the fixed platen 2. After the positioning shape portion 56a is temporarily fixed to the stationary platen 2 in the state of being lifted, the rotating gold is adjusted in accordance with the horizontal level in the longitudinal direction of the injection molding device 1 and the horizontal level in the direction perpendicular to the longitudinal direction. After adjusting the respective horizontalities of the mold support device 10 and fixing the positioning shape portion 56a to the fixed platen 2, the height direction adjusting means 17 is adjusted and fixed in accordance with the position. The positioning of 10 to the injection molding apparatus 1 is completed. In FIG. 11B, the stationary mold 7 and the rotary molds 12 and 13 in FIG. 11A are omitted in order to show the rotary mold support apparatus 10 more easily.

  As described above, when the rotary mold support device 10 is positioned on the stationary platen 2, the rotary mold support device 10 includes the locating ring convex portion of the positioning shape portion 56 a of the frame portion 56, and the locate Since the positional accuracy and parallelism of the parts related to the device as a single unit are ensured with reference to the surface provided with the ring convex portion, the fixed mold 7 and the movable mold 8, the rotating mold 12 and The error of the 13 mold alignment positions can be reduced before and after the rotation, and the load due to the error of the mold alignment position applied to the mold and the sliding portion of the rotating mold support device can be reduced.

  This effect is achieved not only when installing a rotating mold support device during assembly of a new injection molding apparatus, but also by adding a rotating mold support apparatus to an existing injection molding apparatus or rotating molds to other injection molding apparatuses. The same can be obtained when the support device is moved. Further, in Example 3, the three-dimensionally grasped tilt direction and tilt amount generated in the rotating mold due to the error of the mold alignment position, and the moving direction on the plane orthogonal to the rotating shaft direction and the rotating shaft direction Even when the mold alignment position of the rotating mold is periodically corrected based on the amount of movement, according to the present embodiment, the correction amount is small and the correction itself is very easy. Can get to.

  The present invention is not limited to the above embodiment and can be implemented in various forms. For example, in Example 1 and Example 2, the elastic body used for the fixed part is a disc spring or a compression coil spring, but an elastic body such as rubber or resin can be used depending on the size of the load to be absorbed and the amount of movement. is there. Further, in the third embodiment, the distance measuring means 1 and 2 are provided. However, in a small injection molding apparatus, a load due to an error in a mold alignment position applied to a sliding portion of a mold or a rotating mold support apparatus is applied. If there is a case where only one of the inclination of the rotating mold and the movement on the plane orthogonal to the rotation axis becomes a problem, attach only the distance measuring means for measuring the distance of one of the problems, The form managed only by the measured value may be used. Further, in the fourth embodiment, the positioning shape portion 56a and the frame portion 56 are integrated. However, the positioning shape portion 56a or the positioning shape portion 56a and the rib 56b can be attached to and detached from the frame portion 56. Then, after the positioning of the rotary mold support device 10 to the injection molding device 1 is completed, the positioning shape portion 56a or the positioning shape portion 56a and the rib 56b may be removed. According to such a configuration, since it is not necessary to attach the fixed mold 7 to the positioning shape portion 56a, the size of the positioning shape portion 56a is determined using the locate ring hole 9 and the mold mounting surface of the stationary platen 2. Thus, the rotary mold support device 10 can be miniaturized to such an extent that the rotary mold support device 10 can be positioned on the injection molding device 1, and the rotary mold support device 10 can be easily inserted between the mold mounting plates. The cost of the rotary mold support device 10 can be reduced. In addition, in the case of a molded product manufacturer that has multiple kitchens with the same injection molding device and attaches and detaches multiple rotary mold support devices to the injection molding device in accordance with the production plan of the molded product, multiple rotary mold support It is not necessary to provide the positioning shape portion 56a in all the apparatuses, and the cost of the rotary mold support apparatus can be reduced. In the first to fourth embodiments, the rotary mold is rotated around the vertical axis with respect to the installation surface of the injection molding apparatus. The same effect can be obtained in a rotating mold support device in which the mold is rotated around the horizontal axis with respect to the installation surface of the injection molding device.

  As described above, the rotating mold support device according to the present invention can reduce the load caused by the error in the mold alignment position applied to the mold and the sliding portion of the rotating mold support device. In addition, the rotary mold support apparatus according to the present invention can be easily modified from a general-purpose single-layer injection molding apparatus to a multilayer injection molding apparatus if there is a commercially available additional injection unit. Generally, a multilayer injection molding apparatus is a dedicated injection molding apparatus that uses a special mold, and both the mold and the apparatus are expensive. In addition, these dedicated injection molding apparatuses for multilayer molding often have low versatility because ordinary single-layer molding dies cannot be used. If a general-purpose single-layer injection molding apparatus can be easily remodeled into a multilayer injection molding apparatus with the rotary mold support apparatus according to the present invention and a commercially available additional injection unit, the single-layer injection molding apparatus can be changed to a single-layer according to demand. It can be used separately for molding and multi-layer molding at low cost, and the industrial utility value is extremely high for manufacturers of resin molded products.

2 Fixed platen 3 Movable platen 7 Fixed die 8 Movable die 10 Rotating die support device 10a Rotating die mounting portion 10b Supporting portion 12 Rotating die 13 Rotating die 23 Disc spring 33 Compression coil spring 35 Positioning means 35 ' 41 Distance measuring means 1
42 Distance measuring means 2
56 Base part 56a Positioning shape part

Claims (6)

Injection molding that forms a molded product using a rotating mold that is disposed between two opposing mold mounting boards, rotated about a rotation axis, and combined with a mold attached to at least one of the mold mounting boards. In the rotating mold support device of the device,
A rotary mold support apparatus, wherein a rotary mold mounting part to which the rotary mold is mounted and a support part for supporting the rotary mold mounting part are fixed at a plurality of positions via an elastic body.   The rotary mold support apparatus according to claim 1, wherein the plurality of locations are arranged on a circumference centered on the rotation axis.   A positioning means slidable in the direction of the rotation axis is provided between the rotating mold mounting portion and the support portion for positioning the rotating mold mounting portion with respect to the support portion. The rotary mold support apparatus according to claim 1 or 2.   The distance measuring means (1) for measuring the distance in the rotation axis direction of the rotary mold mounting portion with respect to the support portion is arranged in plural on the circumference centered on the rotation axis. The rotary mold support apparatus according to claim 3.   A plurality of distance measuring means 2 for measuring a distance in the radial direction around the rotation axis of the rotary mold mounting portion with respect to the support portion are arranged on a circumference around the rotation axis. The rotating mold support apparatus according to claim 1 to 4.   The base portion to which the rotating mold mounting portion and the support portion are mounted is between the mold mounting plates based on at least one of the locate ring hole and the mold mounting surface of the mold mounting plate. 6. The rotary mold support device according to claim 1, wherein the rotary mold support device has a shape that can be positioned on the rotary die.

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