JP2002067094A - Mold setting device for horizontal injection molding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the impact-free operation to carry in and out a mold and the satisfactory application of a mold setting device to even an injection molding machine equipped with a permanent electromagnetic chuck. SOLUTION: This mold setting device 1 for a horizontal injection molding machine comprises a mold support means 5 which sets a position in the carry-in direction and a position in the vertical direction of the mold 8 carried into a space between the mold mounting faces 34 of mold mounting platens 3 and 4 on the fixed side and the movable side, a mold positioning means 6 which positions the mold 8 supported by the mold support means 5 and a mold fixing means 7, consisting of the permanent electromagnetic chuck, which fixes the positioned mold to the mold mounting platens 3 and 4. In the mold setting device 1, the mold support means 5 has a plurality of idle rollers 10 which are installed at the mold mounting plates 3 and 4 respectively under both mold mounting faces 34 and come into contact with the lower face of the mold 8 at the mold carry-in position to support the mold 8 in the mold carry-in direction, in a freely forward/backward moving direction, and a mold lifting support 11 which is installed at both mold mounting platens 3 and 4 respectively and in such a way that a support face 14 for supporting the mold 8 ascends from between the idle rollers 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a metal, a synthetic resin,
The present invention relates to a mold setting device for a horizontal injection molding machine used for molding plastic ceramics and the like.

[0002]

2. Description of the Related Art Conventional techniques of this kind include actual Japanese Utility Model 5-2.
No. 5859 and Japanese Utility Model Publication No. 5-25860. These have a main body member that supports the mold carried between the board surfaces of the mold mounting board of the injection molding machine, and the main body member is provided with an idler roller that forms a transfer surface in the carrying direction of the mold at the upper end. The main body member rises while supporting the mold on the idle roller. A T-groove is provided on the die mounting surface of the injection molding machine board surface as a lifting guide for the main body member.

[0003] Separately, as a device for fixing a mold to a board surface to be attached at the time of use, such as an injection molding machine, a blow molding machine, an aluminum die casting machine, a rubber vulcanizing machine, a conventional general fluid pressure type clamping device. In addition to a device using a clamp and a device using a clamp fitting for fixing a holding fixture with a screw, it has been proposed to use a permanent electromagnetic chuck. The permanent electromagnetic chuck combines permanent magnets and electromagnets,
It has an attraction surface, and the attraction force due to the magnetic force of the attraction surface switches between a continuous ON state and an OFF state by conducting electricity for several seconds.

[0004]

In the conventional mold setting apparatus, the main body member for supporting the mold tends to be inclined due to the clearance of the guide formed by the T-slot. A step is generated when the idler roller of the main body member is transferred from the idler roller provided, and it is difficult to smoothly carry the mold. This is not preferable in that a heavy metal mold moves, so that even a small step causes a large impact and accelerates the wear of mechanical equipment. In addition, in an injection molding machine configured to use a permanent electromagnetic chuck for fixing a mold, it is necessary to provide a T-groove over the mold mounting surface area, and the structure of the permanent electromagnet is limited, and the chucking force of the chuck is restricted. Decrease. Therefore, a mold setting device requiring such a T-groove is difficult to apply to an injection molding machine using a permanent electromagnetic chuck. If the T-slot is not provided in advance on the mold mounting board provided with the permanent electromagnetic chuck, the T-slot must be machined by disassembling the injection molding machine to provide the mold setting device. However, there is also a problem that so-called retrofitting is difficult.

The present invention can be applied to an injection molding machine equipped with a permanent electromagnetic chuck because it can be conveyed without impact when the mold is carried into and out of the injection molding machine. It is an object of the present invention to provide a mold setting device for an injection molding machine which can be provided so as not to be provided.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a mold for positioning a mold, which is carried between a mold mounting surface of a fixed-side and a movable-side mold mounting board, in a loading direction and a vertical direction. A horizontal injection molding machine comprising: support means; mold positioning means for positioning a mold supported by the mold support means; and mold fixing means for fixing the positioned mold to a mold mounting board. In the mold setting device, the mold fixing means is constituted by a permanent electromagnetic chuck in which the mold mounting surface is an electromagnetic attraction surface, and the mold supporting means is provided below both of the mold mounting surfaces. A plurality of idler rollers each mounted on a mold mounting board and abutting against the lower surface of the mold at the mold loading position between the mold mounting surfaces and supporting the mold so as to be able to advance and retreat in the loading direction;
A plurality of support surfaces respectively provided on both of the mold mounting plates and supporting the mold are provided so as to ascend from between the plurality of idler rollers and are integrally formed with a mold elevating support. It is characterized by the following.

In the means of the present invention, since the mold fixing means is a permanent electromagnetic chuck, there is no need for a clamping device and its T-groove as in a normal hydraulic clamping device, and a hydraulic clamping device is provided. Space can be used separately. Therefore, the mold elevating support can be arranged using this space. This makes it possible to provide a plurality of support surfaces for supporting the mold so as to rise from between the plurality of idler rollers. With the positioning support means supporting the mold at the carry-in position on the idler roller, the positioning means performs positioning in the carry-in direction, and then the mold lifting / lowering support rises to support the mold, The positioning means performs vertical positioning. Then, the injection molding machine is caused to perform a mold clamping operation, and then the mold is fixed to the mounting plate by a mold fixing means, that is, a permanent electromagnetic chuck. Since the mold is fixed by the permanent electromagnetic chuck, advantages such as good operability and shortening of the work time for mold replacement can be utilized in the mold setting. Since the idler roller is mounted on the die mounting plate, and the plurality of die supporting surfaces of the die elevating support provided on the die mounting plate are raised from between the idler rollers. The roller can be provided at a fixed position with high precision and without play. As a result, the carry-in conveyor is connected without a step, and the heavy metal mold can be smoothly carried. In addition, since the injection molding machine and the mold do not receive an impact when the mold is loaded and unloaded, the wear of the device can be prevented. In addition, since the mold elevating and lowering support is configured to rise to support the mold, it does not receive any impact when the mold is carried in. As a result, no impact is transmitted to the side for driving up and down, so that the range of selection of the structure for driving up and down is expanded, and positioning in the vertical direction can be easily performed with high accuracy, and the accuracy can be easily maintained. Furthermore, since the mold elevating and lowering support has a structure in which a plurality of support surfaces are provided so as to rise from between the plurality of idler rollers and are integrally formed, the lower surface of the mold is supported in a wide range in the width direction of the mold. By the contact, the support can be performed in a stable state, and the positioning accuracy is improved.

[0008] In the means of the present invention, it is preferable that an elevating guide for vertically guiding the die elevating support is provided outside a die mounting surface area of the die mounting plate ( Claim 2). A mold setting device requiring a guide T-groove in the mold mounting surface area is difficult to use when the mold fixing means is a permanent electromagnetic chuck. This is because providing a T-groove in the mold mounting area of the mold mounting surface of the permanent electromagnetic chuck reduces the effective suction area. In contrast,
In this configuration, since the mold elevating support does not receive any impact when the mold is carried in as described above, it is not necessary to consider that the elevating guide of the mold elevating support is also subjected to the impact, and it is sufficient strength. Therefore, the effective suction area of the permanent electromagnetic chuck of the mold fixing means does not decrease.

In the means of the present invention, a supporting structure provided with an elevating / lowering drive section for driving the elevating / lowering support member to elevate and lower and the elevating guide is mounted on the die mounting plate side. (Claim 3). In this configuration, the mold elevating support is supported by attaching the support structure to the mold mounting board. In addition to this, the mold setting device can be provided only by attaching the idle roller, so that the mold setting device can be provided. Installation of the mold setting device becomes easy.

[0010] In the means of the present invention, the mold positioning means is positioned in the mold loading direction by engaging an engagement portion provided on the mold side with an engagement portion protruding from the mold support surface. And controlling the elevation drive unit to perform vertical positioning (claim 4). Some of the molds used in the injection molding machine are exchanged and used.However, the size may be different, so that the material supply port on the fixed platen side and the material inlet of the mold are always secure in setting the mold. It is necessary to position the position in the width direction and the position in the height direction in order to make the position match. In this configuration, since the positioning means is provided on the side of the supporting structure to be separately mounted, it is easy to manufacture.

[0011] In the means of the present invention, it is preferable that the lifting drive unit is configured to feed the screw by a ball screw device and an electric motor capable of driving the screw device to rotate and controlling the rotation amount ( Claim 5). In this configuration,
The vertical position of the mold can be accurately positioned with a small power source by screw feed by a ball screw device having a small frictional resistance.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The mold setting device 1 of this horizontal injection molding machine is provided on a fixed mold mounting plate 3 and a movable mold mounting plate 4 of a horizontal injection molding machine 2 shown in FIG. It includes a mold positioning means 6, a mold fixing means 7, and the like.

The mold supporting means 5 includes both mold mounting boards 3,
4 are provided with the same components, and the portions provided on one fixed-side mold mounting plate 3 will be described. The mold supporting means 5 includes an idle roller 10, a mold elevating support 11, a support structure 12 supporting the mold elevating support 11, and the like. As shown in FIG. 4, six idle rollers 10 are provided as shown in FIG. 4. The idle rollers 10 are provided at predetermined positions below the mold mounting plate 3 and cantilevered as shown in FIG. 6. It is supported in a supported state. The upper peripheral surface of each idler roller 10 is on the same horizontal plane,
A horizontal transfer surface that supports the lower surface of the side edge of the mold mounting surface.

As shown in FIG. 5, the mold elevating and lowering support 11 has two recesses 13 each of which is formed by cutting a horizontally long rectangular parallelepiped member from the upper edge, and is thereby divided into three upper end surfaces. Is a mold supporting surface 14 on the same horizontal plane, has guided portions 15 on both side ends, two inner holes 16 are formed from the lower surface, and an up-and-down driving unit 18 described later is connected thereto. As shown in FIG. 5, the mold lifting support 11 is supported by the support structure 12 so as to be raised and lowered by a lifting guide 17 and a lifting drive unit 18 provided on the support structure.

The overall overall shape of the support structure 12 is shown in FIG.
As shown in (b), the U-shaped open side faces upward, and a groove for forming the elevating guide 17 is provided on both sides thereof, and the guided portion 15 is fitted into the groove. And guides the mold elevating support 11 in the vertical and vertical directions. An elevating drive unit 18 is provided at a lower portion connecting the both side portions.
Is provided. The lifting drive unit 18 is a servomotor, an electric motor 19 such as a stepping motor with an encoder, which can control the rotation angle arbitrarily.
0 is transmitted to the screw shafts 21 on both sides in the same manner, and female screws 22 screwed to the screw shafts 21 respectively.
Is fixed in the inner hole 16 below the mold elevating support 11. The screw shaft 21 has entered the inner hole 16. This screw device is a ball screw device. With such a configuration, the screw shaft 21 rotates by the rotation of the motor 19,
The elevating guide 11 is connected to the mold elevating support 11 via the female screw 22.
It is driven up and down along 7. The amount of vertical movement of the mold lifting support 11 can be accurately controlled by controlling the rotation angle of the motor 19. As shown in FIG. 4, the support structure 12 is fixed to the mold mounting plate 3 by the mounting screws 23 shown in FIG.
It is attached to (4). In this mounted state, the recess 13 of the mold elevating support 11 forms a space where the idler roller 10 is located. The mold supporting surface 14 is located slightly below the upper end position of the idler roller 10 with the mold elevating support 11 lowered, and the idler roller 10 is moved from this position.
The upper end of the mold can be raised to an appropriate size, that is, an appropriate size required for raising the mold.

The mold positioning means 6 includes an engaging part 25 and an engaged part 26 for positioning in the carrying-in direction, and a control part (not shown) of the elevation drive part 18 for positioning in the vertical direction.
Consists of Among them, the positioning means composed of the engaging portion 25 and the engaged portion 26 is provided only on the fixed mold mounting plate 3 side. The engaging portion 25 is provided on the mold elevating and lowering support member 11 described above, and as shown in FIGS. 5B and 5D, the fluid pressure cylinder 2 is provided on the lower surface of the mold elevating and lowering support member 11.
7 is provided so that the engaging member 29 connected to the piston rod 28 can penetrate the mold elevating / lowering support 11 and protrude from the upper end thereof. The engaged portion 26 is
As shown in FIGS. 6B and 6C, the recess is provided on the mold 8 side, and is fitted by the engagement member 29 protruding from a predetermined position to position the mold 8. . The tip of the engaging member 29 is tapered, and the recess of the engaged portion 26 is formed with an enlarged and inclined entrance portion on the opening side so that positioning can be performed with respect to a small displacement in the carrying direction. . Although a control unit for positioning in the up-down direction is not shown, the control unit can set the rotation angle of the motor 19 of the elevation drive unit 18. For example, by inputting the type of the mold 8 in advance, The mold elevating and lowering support body 11 is adapted to ascend a necessary ascending distance according to the mold 8. Needless to say, the motors 19 of the mold mounting plates 3 and 4 on both sides are used.
Are synchronously rotated by the same rotation angle.

The mold fixing means 7 includes permanent magnet chucks 33 provided on both of the mold mounting boards 3 and 4 of the injection molding machine, and forms a mold mounting surface 34. The maximum mounting range of the die mounting surface is shown as a die mounting area 35 by hatching in FIG. This mold mounting area 35 is an effective suction surface. Each of the portions 36 shown as a large number of squares in FIG. 4 is one permanent electromagnet. The permanent electromagnetic chuck may be formed in a plate shape as shown in the figure and fixed to the mold mounting board (main body) with screws, but may be attached to the mold mounting board body.

In the injection molding machine 2 shown in FIG. 1, a material supply passage 51 is provided from the material storage section 50 toward the center of the fixed mold mounting plate 3 to form a mold mounting surface. A material supply port is opened at the center of the permanent electromagnetic chuck 33. The movable mold mounting plate 4 is guided by four guide rods 52 and is driven forward and backward toward the fixed mold mounting plate 3. Further, on the side surface of the molding machine 2, there are provided a connecting portion 54 to which the mold exchanging cart 53 is laterally connected and a connecting portion 56 of the carry-in conveyor 55.

The thus-configured die setting apparatus 1 is used as follows. For example, at the time of mold exchange, the mold used is removed, and the mold 8 to be used next is carried in from the mold exchange cart 53. The mold exchange trolley 53
As shown in FIG. 2 to FIG. 4, the mold 8 is used by a conveyor 55 of a mold loading device mounted laterally on the injection molding machine 2 and mounted on the mold mounting plate 3. 4
In between. The space between the mold mounting plates 3 and 4 is a size obtained by adding a margin of about 10 mm to the thickness of the mold, and the mold 8 is moved on the conveyor 55 and the idle roller 10 and is carried in. . The connection between the conveyor 55 and the idler roller 10 is performed after the mold carrier 8 and the injection molding machine 2 are connected.
The connection position of the conveyor 55 is adjusted so that the height is the same. In the figure, reference numeral 30 denotes an entrance idle roller, which also forms a part of the same horizontal transport surface as the idle roller 10. Then, the loading / unloading device 57 which engages with the mold 8 and pushes and pulls the same to move is operated, the mold 8 is substantially stopped at the loading position, and the loading / unloading device 57 is separated. The carry-in position is not necessarily a position where the mold 8 is to be positioned, but can be moved to a position where the mold 8 is to be approximately positioned manually, for example.

Next, when the engaging portion 25 of the mold positioning means 6 is set in a protruding state, it is fitted into the engaged portion 26 of the mold 8 and positioning in the carrying-in direction (lateral direction) is performed. Then
After inputting the type of the mold 8 in advance, the lifting drive 1
When the motor 19 is rotated, the mold elevating and lowering support body 11 is rotated by a predetermined rotation angle, rises a predetermined dimension, and lifts the die 8 to stop at a predetermined position. This height position is a position where the material receiving port of the die 8 and the material supply port of the fixed die mounting plate 3 side coincide. In this state, the movable-side mold mounting plate 4 is moved to the mold side and sandwiched between the two mold mounting surfaces 34, 34, and the suction action of the permanent electromagnetic chucks 33, 33 of the mold fixing means 7 is turned on. I do. That is, energization for turning on is performed for several seconds and then stopped. As a result, the mold 8 is set at an accurate position and is ready for use.

The mold setting device 1 is used to set the mold 8 by using the mold mounting plate 3 of the injection molding machine 2.
When it is carried in between the four, the idler roller 10 is
4, the conveyor 55 for carrying in the mold 8 can be easily connected so as not to have a step, and therefore, the impact at the time of carrying in the mold can be eliminated. Further, the mold setting device 1 includes a mold elevating support 1
1 does not receive the impact at the time of loading the mold, so the lifting guide 1
7 does not need to be formed so strong, and can be formed to the required strength even if it is provided outside the mold mounting area.
Even in the case of the injection molding machine 2 in which the mold mounting surface 34 of the mold mounting board is the permanent electromagnetic chuck 33 composed of a permanent electromagnet, it can be provided so as not to reduce the suction surface.

[0022]

According to the first aspect of the present invention, the permanent mold chuck is used to lift the mold lifting / lowering support in a wide range in the width direction with respect to the lower surface of the mold separately from the idler rollers. Since the configuration is adopted, the positioning of the mold in the vertical direction can be easily performed with high accuracy, and the impact is less likely to occur when the mold is carried in, so that the effects of reducing the wear of the equipment can be obtained. According to the second aspect of the present invention, since the elevating guide is provided outside the mold mounting surface area, a configuration in which the suction area of the permanent electromagnetic chuck is not reduced is achieved, and an effect that sufficient strength can be secured can be obtained. The invention described in claim 3 has an effect that the mold setting device can be easily installed. The invention described in claim 4 has an effect of being easy to manufacture and easy to install. The invention described in claim 5 has an effect that the vertical position of the mold can be accurately positioned.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating an example of a horizontal injection molding machine provided with an apparatus according to an embodiment of the present invention, and a mold changing cart.

FIG. 2 is a partially enlarged plan view of FIG.

3 is a front view including a cross section taken along line C-C of FIG. 2 and a mold exchanging truck, showing the embodiment of the present invention.

FIG. 4 is an enlarged cross-sectional view taken along the line CC of FIG. 2;

5 (a) is a plan view, FIG. 5 (b) is a front view, FIG. 5 (c) is an AA sectional view,
(D) is a BB sectional view of (b).

6 (a) is a partial longitudinal sectional side view corresponding to FIG. 4,
(B) is a perspective view of a mold, and (c) is an explanatory view showing an engagement relationship between the mold and an engagement portion.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 mold setting device 2 horizontal injection molding machine 3 fixed mold mounting plate 4 moving mold mounting plate 5 mold support means 6 mold positioning means 7 mold fixing means 8 mold 10 idle roller 11 mold elevating Support 12 Support structure 13 Concave part 14 Mold support surface 15 Guided part 16 Inner hole 17 Elevation guide 18 Elevation drive part 19 Motor 20 Gear mechanism 21 Screw shaft 22 Female screw 23 Mounting screw 25 Engagement part 26 Engagement part 27 Fluid pressure cylinder 28 Piston rod 29 Engaging member 30 Idling roller 33 Permanent electromagnetic chuck 34 Mold mounting surface 35 Mold mounting area 36 Part 50 Material storage 51 Material supply passage 52 Guide rod 53 Mold changing carriage 54 Connecting part 55 Loading conveyor 56 Connecting part 57 Loading / unloading device

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Toru Iijima 2110 Nanjo Nanjo, Hanagi-gun, Nagano-gun, Nissei Resin Kogyo Co., Ltd. ES R Engineering Co., Ltd. F-term (reference) 4F202 CA11 CB01 CR01 CR07

Claims (5)

[Claims] 1. A mold supporting means for positioning a position of a mold carried in between a mold mounting surface of a fixed-side and a moving-side mold mounting plate in a carrying direction and a vertical direction, and said mold supporting means. Mold positioning means for positioning the supported mold,
In a mold setting device of a horizontal injection molding machine having a mold fixing means for fixing the positioned mold to a mold mounting board, the mold fixing means, the mold mounting surface and the electromagnetic attraction surface. The permanent mold chuck, wherein the mold supporting means is mounted on a mold mounting plate below the two mold mounting surfaces, respectively, and is located at a mold loading position between the mold mounting surfaces. A plurality of idler rollers which abut against the lower surface and support the mold so as to be able to advance and retreat in the loading direction; and a plurality of support surfaces respectively provided on the both mold mounting plates and supporting the mold, are provided between the idler rollers. A mold setting device for a horizontal injection molding machine, comprising: a mold elevating / lowering support member provided so as to ascend from the space between them. 2. A mold setting device for a horizontal injection molding machine according to claim 1, wherein an elevating guide for vertically guiding said elevating and lowering support is provided outside a mold mounting surface area of said mold mounting board. A mold setting device for a horizontal injection molding machine, wherein 3. A mold setting device for a horizontal injection molding machine according to claim 2, wherein the support structure provided with an elevating drive section for driving the elevating support and lowering the elevating guide and the elevating guide is provided in the mold. A die setting device for a horizontal injection molding machine, which is mounted on a mounting board side. 4. A mold setting device for a horizontal injection molding machine according to claim 3, wherein said positioning means is provided on an engaged portion provided on the mold side with an engaging portion projecting from said mold supporting surface. A mold setting device for a horizontal injection molding machine, characterized in that it is configured to perform positioning in the mold loading direction by engaging with it, and perform positioning in the vertical direction by controlling the elevation drive unit. 5. The die setting device for a horizontal injection molding machine according to claim 3, wherein the elevation drive unit controls a ball screw device and a rotation amount of the screw device by rotating and driving the screw device. A die setting device for a horizontal injection molding machine, characterized in that it is driven by a simple electric motor.