JP2002248651A - Mold replacing dolly for injection molding machine and layout of injection molding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that in the layout of conventional injection molding machines, a molding mold replacing table is necessary, and the surfaces of the machines are irregular on the side of an inspection passage. SOLUTION: In the layout of injection molding machines, two injection molding machines 45 and 45 are arranged in series on one side of common rails 31, etc., two injection molding machines 45 and 45 are arranged in series on the other side, branch rails 32, etc., are extended perpendicularly from the common rail 31 toward the machines 45, etc., and a mold replacing dolly 10 is made to travel on the common rails 31, etc. In place of the molding mold replacing table, the branch rails 32, etc., are installed. Since the branch rails 32, etc., are compact, a facility is simplified as a whole, reducing facility costs.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a mold changing cart for an injection molding machine and an improvement in the layout of an injection molding machine using the mold changing cart.

[0002]

2. Description of the Related Art For example, in FIG. 10 of Japanese Patent Publication No. 4-6531 entitled "Molding die changing device for a group of synthetic resin injection molding machines", a rail-shaped guide 45 The same shall apply hereinafter), the movable carriage 27 is mounted on the guide 45 so as to be able to travel freely, a small injection molding machine is arranged beside the guide 45 and on the upper left side in the figure, and a medium-sized injection molding machine on the lower left side in the figure. , A mold storage station 44 is arranged on the upper right side of the figure, a large injection molding machine is arranged on the lower right side of the figure, and the mold exchange tables 19, 19, 19 are arranged from small, medium, and large injection molding machines. Are shown, and the layout of the injection molding machine is shown.

For example, a mold stored in a mold storage station 44 is placed on a movable carriage 27, and the movable carriage 27 is moved to a medium-sized injection molding machine.
The mold is moved from 7 to the mold exchange table 19, and then the mold is moved from the mold exchange table 19 to a medium-sized injection molding machine. In this manner, the mold can be exchanged by reciprocating the mold between the small / medium / large injection molding machine and the mold storage station 44.

[0004]

As is apparent from FIG. 10 of the above publication, each of small, medium and large injection molding machines must be provided with a mold exchange table 19, 19, 19. As a result, the mold exchange tables 19, 1
The cost of 9, 19 increases. Further, as is apparent from FIG. 10, since the surface on the guide 45 side of the small-sized injection molding machine and the surface on the guide 45 side of the medium-sized injection molding machine are aligned, the surface farther from the guide 45 is Become irregular. The surface far from the guide 45 faces the inspection passage of the worker, and if the surface is not aligned in such a manner, the flow line of the worker will meander, and the worker will easily come into contact with the injection molding machine, and the burden on the worker will increase. That is, in the layout of the conventional injection molding machine, a mold exchange table is always provided, and the surface of the injection molding machine becomes uneven on the side of the inspection passage. Therefore, these improvements are required.

[0005]

SUMMARY OF THE INVENTION In order to meet the above-mentioned demand, a first aspect of the present invention is to provide a bogie frame provided with a lifting platform capable of supporting a die and adjusting the height of the die, and a first frame in the bogie frame. At least three first wheels mounted via lifting means, at least three second wheels mounted on the bogie frame via second lifting means and arranged orthogonal to the first wheels; A control unit for controlling the first and second elevating means so that only one of the wheel and the second wheel is brought into contact with the rail constitutes a mold exchange cart for an injection molding machine.

[0006] The mold exchanging cart is a so-called xy traveling cart, and can be run in parallel and at right angles to the injection molding machine. Since it can be run at right angles to the injection molding machine, the mold exchange table conventionally attached can be omitted. In addition, the height of the mold can be freely adjusted since the carriage frame is provided with the elevating platform, so that molds of various sizes, large and small, can be covered by one mold exchange cart.

According to a second aspect of the present invention, at least two injection molding machines are arranged in series along the common rail, and branch rails are respectively extended from the common rail toward the injection molding machine at right angles. The injection molding machine is laid out so that the mold exchanging cart for the injection molding machine according to item 1 runs.

[0008] Since it can be run at right angles to the injection molding machine, it is possible to omit the molding die exchange table conventionally attached. In addition, the height of the mold can be freely adjusted since the carriage frame is provided with the elevating platform, so that molds of various sizes, large and small, can be covered by one mold exchange cart.

The surface of the injection molding machine facing the common rail is referred to as a rail side surface, the surface farther from the common rail is referred to as a working side surface, and the device length of the injection molding machine is the machine length, and the device width orthogonal to this. When the width of a plurality of injection molding machines is different, the injection molding machines are made to have the same working side by making the length of the branch rails different. Layout.

The plurality of injection molding machines have different lengths of the branch rails so that the working side surfaces of the plurality of injection molding machines are aligned. As a result, the work flow line becomes straight, the concern that the worker comes into contact with the injection molding machine is reduced, and the burden on the worker can be greatly reduced.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a side view of a mold exchanging cart for an injection molding machine according to the present invention. A mold exchanging cart for an injection molding machine (hereinafter abbreviated as “mold exchanging cart”) 10 is a new and old mold 1.
A bogie frame 13 provided with an elevator 20 capable of supporting the molds 11 and 12 and supporting the molds 11 and 12
And at least three first wheels 15 attached to the truck frame 13 via the first lifting / lowering means 14 (... denotes a plurality; the same applies hereinafter). 16 and at least three attached through the first
The first and second elevating means 15 are arranged so that only one of the first wheel 15... And the second wheel 17. , 17 and a control unit 19.

As a specific example, the elevating table 20 includes a base plate 21 and X
A link 22 and an elevating cylinder 23 are provided.
Is a pantograph link type elevating mechanism that raises or lowers the. However, the lift 20 may be one that directly raises and lowers the base plate 21 with a cylinder, or the X-link 22
Can be changed to a parallel link, and the lifting mechanism of the lifting table 20 may be arbitrarily selected.

FIGS. 2 (a) and 2 (b) are a front view and a side view, respectively, of a lifting wheel employed in the present invention. As shown in (a), the first lifting / lowering means 14 is fixed to the bogie frame 13, and the actuator shaft 25 extending downward from the first lifting / lowering means 14.
The fork member 26 is fixed to the fork member 26, and the axle 27 is rotatably mounted on the fork member 26.
4 attaches the first wheel 15. As shown in (b), since both ends of the axle 27 are supported by the fork member 26, there is no possibility that the first wheel 15 swings.

Returning to (a), when the guides 28 and 28 are provided on the bogie frame 13 and the foam member 26 is fitted thereto, the first wheel 15 indicated by a solid line is moved to the first wheel 15 indicated by an imaginary line. can be reciprocated by a. The imaginary line position is the traveling position, and the solid line position is the standby position. Second in FIG.
Since the configuration of the wheels 17 is the same, the description is omitted.

FIG. 3 is a plan view of a mold exchanging cart according to the present invention.
... are arranged in a roller table so that the mold can be moved. The rolls 29 can be driven by a motor, but may be free-rotating rolls.

FIG. 4 is a diagram showing the wheel arrangement of the mold exchanging truck according to the present invention. Although not described so far, in the present invention, the common rails 31... And the branch rails 32. The first wheels 15 are mounted on the common rails 31 and the second wheels 17 are mounted on the branch rails 32. Further, a first drive shaft 33 is passed to the pair of left and right first wheels 15, 15, and the first drive shaft 33 is rotated forward and reverse by a chain 34, sprockets 35, 36 and a first motor 37.
Also, by passing the second drive shaft 38 to the pair of second wheels 17, 17 and rotating the second drive shaft 38 forward and reverse by the chain 39, the sprockets 41, 42 and the second motor 43,
The mold exchanging cart 10 can be run.

Although the number of the first wheels 15 is four in the embodiment, three wheels can be provided by arranging them at the vertices of a triangle. Further, the number may be five or more. Therefore, the number of the first wheels 15 may be at least three. Similarly, the number of the second wheels 17 may be at least three.

FIGS. 5A to 5C show the first embodiment according to the present invention.
It is an operation explanatory view of the second wheel. (A) shows a common rail traveling mode of the mold changing cart, in which the first wheel 1 is used.
5 and 15 contact the common rails 31 and 31 and the second wheel 1
7, 17 are branch rails 32, 32 and common rails 3
From 1 and 31, the mold exchanging cart can run to the left and right in the figure. In (b), in order to switch the form, the second wheels 17, 17 are lowered and brought into contact with the branch rails 32, 32. In this figure, the first wheels 15, 15 and the second wheels 17, 1
7 are all shared rails 31, 31 or branch rails 32,
32. Thereafter, only the first wheels 15, 15 are raised. (C) shows a common rail traveling mode of the mold changing cart. In this mode, the first wheels 15, 15 are separated from the common rails 31, 31, and the second wheels 17, 17 are in contact with the branch rails 32, 32. Then, the mold exchanging cart can be moved in the front and back directions of the drawing.

FIG. 6 is a layout (first embodiment) of an injection molding machine according to the present invention. Two injection molding machines 45, 45 are arranged in series beside the common rails 31 and on one side. And two injection molding machines 45 and 45 are arranged in series on the other side, and the injection molding machines 45 are formed at right angles from the common rail 31.
The injection molding machine layout is shown in which the branch rails 32... Are respectively extended toward, and the mold exchanging cart 10 for the injection molding machine runs on the common rails 31. In this layout, branch rails 32 are laid in place of the molding die exchange table used conventionally. Since the branch rails 32 are compact, the equipment can be simplified as a whole and the equipment cost can be reduced.

FIG. 7 is a view of a layout (second embodiment) of an injection molding machine according to the present invention. A large (L size) injection molding machine 45L and a small (S size) are provided along the common rails 31.
Injection molding machine 45S and medium-sized (M size) injection molding machine 4
5M are arranged in series, and the surfaces of the injection molding machines 45L, 45S, 45M facing the common rails 31.
6S, 46M, the surface farther from the common rail 31... Are called working side surfaces 47L, 47S, 47M, and the injection molding machine 45 is used.
L, 45S, and 45M device lengths were changed to machine lengths L1, L2, and L.
3. The machine width W1, W2, and W3 are machine widths orthogonal to the machine width, and the machine width W of the plurality of injection molding machines 45L, 45S, and 45M.
When W1, W2, and W3 are different from each other, the working side surfaces 47L, 47S, and 47M of the injection molding machine are aligned by being along the straight line L5. This can be achieved by changing the length of the branch rails 32. As a result, the work flow line becomes straight, and the worker is less likely to come into contact with the injection molding machines 45L, 45S, and 45M, and the burden on the worker can be greatly reduced.

Next, a further improved technique according to the present invention will be described. FIG. 8 is a view taken in the direction of the arrow 8-8 in FIG.
5 and 15 are on the shared rails 31 and 31. FIG. 9 is a layout diagram of a main part of a rail according to the present invention. In view of crossing a common rail 31... With a branch rail 32. Notches 49 must be provided. In order to prevent lateral movement of the bogie, it is necessary to use both flanged wheels on one of the left and right wheels (see the right wheel in FIG. 8) or to use one flanged wheels on both the left and right wheels, and pass these flanges. This is because the gaps t and t are needed to make the gap.
The notch 49 is necessary, and it is unavoidable that the mold exchanging cart slightly moves up and down in the notch 49, but it is better that the vertical movement caused by the notch 49 is small. That is for sure.

FIG. 10 is a perspective view of a rail joining mechanism for a rail intersection according to the present invention. The rail joining mechanism 50 is provided underground at the intersection, and a base 51 is provided.
A cylinder 52 attached to the base 51 so as to be rotatable about a vertical axis and vertically, a rail piece 54 attached to a piston rod 53 of the cylinder 52, and a cylinder 52
Is turned by 90 °. What is important here is that the rail piece 54 has a length substantially the same as the size of the cutout portion 49 only by allowing for a slight gap t0, t0 of about 1 mm. However, like this, the rail piece 5
If 4 is full length, it is not possible to turn at that position, so it is turned in the following manner.

In order to turn the rail piece 54 shown by a solid line following the common rail 31, 31 by 90 °, the cylinder 5
2 is operated to lower the rail piece 54 to the position of the imaginary line.
Next, the turning cylinder 55 is operated to turn the rail piece 54 together with the cylinder 52 by 90 °. Subsequently, the cylinder 52 is operated to raise the rail piece 54 so as to follow the branch rails 32. Since the gaps t0, t0 at both ends of the rail piece 54 are very small, there is no danger that the mold exchanging truck will move up and down at the intersection, and there is no danger of giving unnecessary vibration to the placed mold.

The first and second lifting means and cylinders are preferably air cylinders, hydraulic cylinders or electric cylinders. However, any type and type of actuators can be used.

[0025]

According to the present invention, the following effects are exhibited by the above configuration. The mold exchanging cart of the first aspect is a so-called xy traveling cart, and can be made to travel in parallel and at a right angle to the injection molding machine. Since it can be run at right angles to the injection molding machine, the mold exchange table conventionally attached can be omitted. In addition, the height of the mold can be freely adjusted since the carriage frame is provided with the elevating platform, so that molds of various sizes, large and small, can be covered by one mold exchange cart.

According to a second aspect of the present invention, at least two injection molding machines are arranged in series along the common rail, and the branch rails are respectively extended from the common rail toward the injection molding machine at right angles. An injection molding machine is laid out so as to run the mold exchanging cart for the injection molding machine according to claim 1. The mold exchanging cart according to claim 1 can be run at right angles to the injection molding machine. In addition, it is possible to omit the mold exchange table conventionally attached. In addition, the height of the mold can be freely adjusted since the carriage frame is provided with the elevating platform, so that molds of various sizes, large and small, can be covered by one mold exchange cart.

According to a third aspect of the present invention, the working side surfaces of the plurality of injection molding machines are made uniform by making the lengths of the branch rails different. As a result, the work flow line becomes straight, the concern that the worker comes into contact with the injection molding machine is reduced, and the burden on the worker can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a mold exchange cart for an injection molding machine according to the present invention.

FIG. 2 is a front view and a side view of a lifting wheel used in the present invention.

FIG. 3 is a plan view of a mold changing cart according to the present invention.

FIG. 4 is a wheel layout diagram of a mold changing cart according to the present invention.

FIG. 5 is an explanatory view of the operation of the first and second wheels according to the present invention.

FIG. 6 is a view of a layout (first embodiment) of an injection molding machine according to the present invention.

FIG. 7 is a layout (second embodiment) of the injection molding machine according to the present invention.

8 is a view taken in the direction of arrow 8-8 in FIG. 4;

FIG. 9 is a layout diagram of a main part of a rail according to the present invention.

FIG. 10 is a perspective view of a rail joining mechanism for a rail intersection according to the present invention.

[Explanation of symbols]

10 ... Die exchange trolley for injection molding machine (die exchange trolley), 1
1, 12 mold, 13 truck frame, 14 first elevating means, 15 first wheel, 16 second elevating means, 17 second wheel, 19 control unit, 20 elevating table, 22 ... X-link, 23 ... lifting cylinder, 31 ... common rail, 32 ... branch rail, 45, 45L, 45M, 45S ... injection molding machine, 46L, 46M, 46S ... rail side surface, 47L,
47M, 47S: Work side surface.

Continued on the front page F term (reference) 4F202 AM18 AM21 CA11 CB01 CR01 CR06 4F206 AM18 AM21 JA07 JL05 JQ06 JQ90

Claims (3)

[Claims] 1. A trolley frame provided with an elevating platform capable of supporting a die and adjusting the height of the die, and at least three first wheels mounted on the bogie frame via first lifting means. And at least three second wheels attached to the bogie frame via second elevating means and orthogonally arranged to the first wheel, and only one of the first wheel and the second wheel is brought into contact with the rail during running of the bogie. And a controller for controlling the first and second elevating means. 2. At least two injection molding machines are arranged in series along a common rail, and branch rails are respectively extended from said common rail toward said injection molding machine at right angles, and said common rail and said branch rail are charged. Item 4. An injection molding machine layout, wherein the mold changing cart for an injection molding machine according to Item 1 is run. 3. A surface of the injection molding machine facing the common rail is referred to as a rail side surface, a surface farther from the common rail is referred to as a work side surface, and a device length of the injection molding machine is a machine length, and a device width orthogonal to the machine width is a machine width. When the width of the plurality of injection molding machines is different and the width of the plurality of injection molding machines is different, the plurality of injection molding machines make the lengths of the branch rails different, so that the working side surfaces of the plurality of injection molding machines are aligned. The injection molding machine layout according to claim 2.