JPH0675889B2 - Injection molding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an injection molding apparatus provided with two injection molding units.

[Prior Art] Conventionally, a technology for efficiently forming a work by providing two injection molding units and operating each independently has been known and put into practical use. In particular, in order to control the two injection molding units to operate optimally, for example, as shown in Japanese Patent Publication No. 61-9128,
Automated driving control systems are known. By adopting such an automatic operation control system, the two injection molding units can optimally and efficiently perform the injection molding of the work, and the production efficiency is improved.

[Problems to be Solved by the Invention] However, even if it becomes possible to optimally control the operation of two injection molding units, in the conventional factory layout, the two injection molding units are They are installed independently of each other, and each injection molding unit is configured to have a dedicated mold changing mechanism. For this reason, it has been pointed out that there is a problem in that the layout space in the factory cannot be effectively used. Also, in order to be able to use the molding die detachably attached to the injection molding unit immediately after setting, it is necessary to preheat the molding die. There is a problem that a dedicated mold preheating device is required and the preheated molding die must be configured to be conveyed to the injection molding unit, which requires a further arrangement space.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a molding die that can effectively use an arrangement space in a factory and is detachably provided to an injection molding unit. An object of the present invention is to provide an injection molding device which can be used immediately after being set and can be used efficiently.

[Means for Solving the Problems] In order to solve the above-mentioned problems and achieve the object, the injection molding apparatuses according to the present invention are arranged in parallel with each other, and each pair of injection molding apparatuses independently execute the injection molding operation. The injection-molding units and the injection-molding molds arranged between the injection-molding units and removed from the injection-molding units are conveyed and placed, and the rollers that rotate forward and backward by the reversible rotation motor are installed. A mounting station having a carrying mechanism, a preheating station disposed at each position near the injection molding unit on the side opposite to the mounting side of the mounting station, and the injection molding mold in the preheating station. Fixed positioning for connecting a moving positioning mechanism for relative positioning of the injection molding die and pipes for raising the temperature of the injection molding die to a predetermined temperature after the relative positioning. It is equipped with a mechanism.

[Operation] In the injection molding apparatus configured as described above, the two injection molding units are arranged side by side, and the injection mold detached from each injection molding unit is conveyed between them. A placement station is provided which is placed and placed. In this way, the mounting station is 2
This is common to the injection molding unit of one table, and the space for one mounting station is saved. In this way, the space in the factory can be effectively used. Further, the molding die can be used immediately after it is set, so that it can be used efficiently.

[Embodiment] The configuration of an embodiment of a work unloader exchanging device for an injection molding apparatus according to the present invention will be described in detail below with reference to the accompanying drawings.

As shown in a plan view in FIG. 1, an injection molding apparatus 10 of this embodiment is provided with a pair of injection molding units 12 and 14 arranged in parallel in a state of being separated from each other, and these injection molding units 1
2 and 14, respectively, are arranged outside the injection molding unit 12,1
Next to 4, a pair of preheating stations 18 and 20 for keeping the used injection molding dies (hereinafter simply referred to as dies) 16 in a preheated state, and both injection molding units 1
The mold 16 is placed between the two molds 14 and 14 and is used in the injection molding units 12 and 14 and is removed to replace the mold 16 ′. Placement station 22 and die picking station 24 provided at a position spaced downward from the die placement station 22 in the figure.
Between the mold mounting station 22 and the mold picking station 24, an unmanned transport vehicle 26 that mounts the replaced and removed mold 16 and reciprocates, and the injection molding units 12, 14 respectively. And a take-out device 28 for taking out and carrying out the injection-molded workpiece W.

Here, as shown in the right side view of FIG. 1 in FIG. 2, each take-out device 28 takes out a take-out mechanism 30 for taking out the work W formed by the mold 16 installed in each injection molding unit 12, 14. Further, as shown in FIG. 1 again, there is provided a carrier conveyer 32 for receiving the taken-out work W from the take-out mechanism 30 and carrying it to a carry-out mechanism (not shown). In addition, in this take-out device 28,
16 is attached corresponding to 16 and is formed in conformity with the shape of each injection-molded work W, and a chuck mechanism 34 for exclusively chucking this work W is provided.
An exchange mechanism 36 is provided for exchanging the chuck mechanism 34 according to the exchange of the mold 16.

Each of the injection molding units 12 and 14 uses a mold 16 composed of a movable mold and a fixed mold to inject a molten synthetic resin into the mold 16 at a predetermined high pressure, thereby forming a movable mold. This is a conventionally known configuration for forming a work W having a predetermined shape according to the shape of the cavity defined between the mold and the fixed mold, and the description of the structure of the mold 16 will be omitted.

The configurations of the other components of the injection molding apparatus 10 described above will be sequentially described below.

First, the residual heat stations 18 and 20 are used for keeping the mold 16 ′ to be used next in the corresponding injection molding stations 12 and 14 on standby and for heating the mold 16 ′ during this standby. It is provided so that it can be immediately used when it is replaced with the injection molding stations 12 and 14 and installed.
In other words, in the injection molding device 10, these residual heat stations 18, for the purpose of improving the work efficiency by minimizing the start-up time until the injection molding operation after the replacement operation and the replacement operation of the mold 16 that is absolutely necessary. 20 is provided.

These residual heat stations 18 and 20 have a symmetrical structure, and are located on the left side in FIG.
As shown in detail in FIG. 3 and FIG. 4, the structure of 18 is provided with a base 38 on which the mold 16 carried by a lifting and carrying mechanism such as a crane is placed. This base 38
A fixed positioning base 40 extending in the direction indicated by arrow A is fixed to the upper side. On the other hand, on the base 38, a movable positioning base 42 is arranged at a position separated from the fixed positioning base 40 by a predetermined distance so as to be movable back and forth with respect to the fixed positioning base 40. This predetermined interval is set to a size large enough for the mold 16 of the maximum size used in the injection molding apparatus 10 to be placed here. Further, a hydraulic cylinder mechanism 44 is connected to the moving positioning base 42, and is configured to be driven back and forth.

With the configuration as described above, the mold 16 once placed on the base 38 has a reference surface defined by one side surface of the mold 16 by the movement positioning base 42 that moves by activation of the hydraulic cylinder mechanism 44. The fixed positioning table 40 is moved until it abuts. In this way, the position of the mold 16 at the residual heat station 18 is accurately positioned.

Further, below the die 16 positioned in this way, a connection port 46 connected to an inlet / outlet of a heating circulation path (not shown) of the die 16 is provided. This heating circulation path is provided when the mold 16 is installed in the injection molding units 12 and 14 and the hot medium is circulated through the mold 16 so that the mold is
It is provided in order to heat the periphery of the 16 cavities so that the molten resin can survive in every corner of the cavities, and at the time when this mold 16 is placed on the residual heat station 18, When the high heat medium is circulated through the connection port 46 described above, the entire die 16 is left over.

The location of the inlet / outlet of the heating circulation path of the mold 16 is
With the mold 16 positioned as described above, it is set so as to be in the same position for all the molding dies 16.

On the other hand, this residual heat station 18 and die mounting station
A conveyance path 48 for conveying the mold 16 from the residual heat station 18 to the mold mounting station 20 through the injection molding unit 12 is provided between the mold 20 and the mold 20. That is, the transport path 48 is located below the mold 16 positioned on the residual heat station 18 and at the positions corresponding to both sides of the mold 16 in the direction indicated by the above-mentioned symbol A, that is, on both positioning bases 40 and 42. A plurality of transport rollers for transporting the mold 16 along the extension direction
Equipped with 50 rotatable. As shown in FIG. 3, these transport rollers 50 are drive motors arranged below the transport rollers.
It is connected to be rotationally driven by the drive force of 52 via a drive chain not shown in detail.

With the above-described configuration, in the injection molding unit 12 currently in use, when the mold is replaced in order to change the type of the work W to be molded, the mold replacement operation is performed as follows. .

That is, with respect to the new mold 16 ′ to be replaced, the connection port 46 is removed to end the residual heat operation and the mold 16 to be replaced (that is, used) is replaced.
Is removed from the injection molding unit 12 and placed on the transport path 48. Thereafter, the drive motor 52 is activated, the mold 16 removed from the injection molding unit 12 is conveyed to the replacement station 22, and the mold 16 ′ that has been preheated by the residual heat station 18 is changed to the injection molding unit 12. Will be transported to. The preheated new mold 16 'is installed in the injection molding unit 12, and the mold replacement operation is completed.

Here, a mold to be used next is hoisted and conveyed to the residual heat station 18 from a stocker (not shown) via a crane (not shown), and the new mold 16
Meanwhile, the residual heat operation is started, and at the mounting station 22, the transfer operation of the replaced and removed mold 16 to the mold pick-up station 24 is started, which will be described later.

Further, in the above-mentioned mounting station 22, an unmanned transport vehicle 26 that can reciprocate between the die picking station 24 is provided. This automated guided vehicle 26
Is, as shown in FIG. 5, a leftover heat station on the left side of the drawing.
Transfer roller 50 for transferring the mold 16 from 18 to here
And the remaining heat station 18 on the right side of the drawing from here to the mold 16
A carry-in roller 54 is rotatably provided in the upper part in a continuous state together with a carry roller 50 for carrying the.

The carry-in roller 54 is rotationally driven by another drive motor 56 provided in the automatic guided vehicle 26, and the drive motor 56 is configured to be reversibly rotatable. In this way, no matter which residual heat station 18 or 20 the mold 16 is conveyed from, the mold 16 will be conveyed by the carry-in roller 54.
By rotating and driving in a corresponding direction, the sheets can be reliably taken in on the automatic guided vehicle 26 located on the mounting station 22.

Here, as described above, the placement station 22 is
It is arranged so as to be located just between the injection molding units 12 and 14. With this configuration, the mounting station 22 can receive the mold 16 that has been exchanged and removed from both injection molding units 12 and 14. In this way, in this embodiment, it is not necessary to provide two mounting stations, and the installation space in the factory can be effectively used.
Efficient automatic die replacement will be performed.

On the other hand, as described above, the mold 16 conveyed to the mounting station 22 is once transferred to the automatic guided vehicle 26, and then in a direction orthogonal to the direction indicated by the arrow A from the mounting station 22. It will be carried out to the pick-up station 24 arranged at a position spaced apart along it, but as mentioned above, this is provided with the take-out device 28 on each injection molding unit 12, 14. , These take-out devices 28
As a result, the space above the mounting station 22 is closed, and as a result, it becomes impossible to directly lift the mold 16 upward from the mounting station 22 with a crane or the like.

The automatic guided vehicle 26 is, as shown in FIG. 5, a self-propelled vehicle having a drive motor 58 as a transport drive source therein,
As shown in FIG. 1, a pair of rails 60 for defining a traveling path between the mounting station 22 and the picking station 24 are laid on the base. These rails
60 is set so as to be separated from the mounting station 22 as a starting point, that is, to extend along a direction orthogonal to the direction indicated by the arrow A described above.

In this way, the mounting station is mounted via the pair of rails 60.
The mold 16 placed on the automatic carrier 26 that has traveled from the pick-up station 24 to the pick-up station 24 is stopped at the pick-up station 24, and the mold is moved by a crane or the like not shown.
The 16 is hoisted, conveyed to a stocker (not shown), and stored and waited there.

Next, the structure of the work take-out device 28 for taking out the work W formed in each of the injection molding units 12 and 14 will be described in detail with reference to FIG. 6 and subsequent drawings.

First, the overall configuration of the take-out device 28 will be described below with reference to FIGS. 6 to 8.

The take-out devices 28 are arranged on both injection molding units 12 and 14, respectively, and have a bilaterally symmetrical structure. Therefore, the take-out devices arranged on the injection molding unit 12 located on the left side in FIG. 1 are taken out. Only 28 will be explained.

This take-out device 28 is arranged on the upper surface of the corresponding injection molding unit 12 as shown in FIG. 6, the front shape, FIG. 7 the upper surface shape, and FIG. 8 the left side shape. The takeout mechanism 30 is provided. This take-out mechanism
Reference numeral 30 is composed of a three-dimensional slide driving mechanism 70, which will be described later, and the above-described chuck mechanism 34 which is driven to slide back and forth, left and right, and up and down through the three-dimensional slide driving mechanism 70. In addition, a check replacement mechanism 36 for replacing the check mechanism 34 provided in the take-out mechanism 30 according to the mold 16 to be replaced is provided as a take-out mechanism 30.
Are disposed on the injection molding unit 12 in a state of facing each other.

As shown in FIG. 8, the above-described three-dimensional slide drive mechanism 70 includes a support main body 72 fixed to the upper surface of the corresponding injection molding unit 12 in an upright state, and from the upper end of the support main body 72, as shown in FIG. A left and right support arm 74 extending along a direction orthogonal to the paper surface, that is, in the left and right direction in FIGS. 6 and 7 (the same direction as the conveyance direction of the mold 16 shown by symbol A in FIG. 1) A left and right slide block supported by the left and right support arms 74 so as to be slidable in the left and right direction.
76, the left and right slide blocks 76, the front and rear support arms 78 extending in the left and right directions in FIG. 8, that is, the front and rear directions in FIG. 7, and the front and rear support arms 78 can slide in the front and rear directions. The front and rear slide blocks 80 are supported by the front and rear slide blocks 80, and the front and rear slide blocks 80 are supported by the front and rear slide blocks 80 so as to be slidable in the vertical direction in FIG. The chuck mechanism 34 described above is configured to be detachably attached to the lower end of the vertical slide block 82 via a locking mechanism 90 described later.

Here, the left and right slide blocks 76 and the front and rear slide blocks 80 are respectively connected to a hydraulic cylinder mechanism (not shown), and are configured to slide along the left and right direction and the front and rear direction in response to activation of these hydraulic cylinder mechanisms. Has been done. On the other hand, the vertical slide block 82 is attached to the lower end of a piston rod 86 which is reciprocally driven along the vertical direction of a hydraulic cylinder mechanism 84 which is fixedly erected on the upper surface of the front and rear slide block 80.

On the other hand, as shown in FIG. 8, the mold 16 in the injection molding unit 12 is installed with the fixed mold fixed to the mold mounting surface indicated by the symbol S. And this mold 16
After the predetermined work W has been injection-molded, the movable mold is separated from the fixed mold. Here, the work W is separated from the fixed mold in accordance with the separating operation of the movable mold while being attached to the movable mold, as indicated by the one-dot chain line in the figure. In this way, it is pulled away from the fixed mold,
The slide strokes of the left and right slide blocks 76, the front and rear slide blocks 80, and the up and down slide blocks 82 are defined so that the work W attached to the movable mold can be taken out.

Since the three-dimensional slide drive mechanism 70 is configured as described above, when the work W is taken out from the mold 16 which has completed the injection molding operation, the chuck mechanism 34 attached to the tip of the vertical slide block 82 is attached. First, the fixed mold and the movable mold, which are separated from each other, are inserted from above, and then the vertical slide block 82 is slid toward the movable mold. By this operation, the chuck mechanism 34 engages the work W attached to the movable mold and chucks it.

On the other hand, when this check operation is completed, a not-illustrated rigid pin in the movable mold is projected, the work W attached to the movable mold is pushed away from this, and the three-dimensional slide drive mechanism 70 is activated. Check mechanism 34,
Slide in the direction to separate from the movable mold. In this way, the work W is released from the movable mold while being chucked by the chuck mechanism 34.

Thereafter, the three-dimensional slide drive mechanism 70 is further driven, and the chucked work W is transported to the base end portion of the transport conveyor 32 shown in FIG. 1 and discharged there.
In this way, a series of operation for taking out the work W is completed.

Next, with reference to FIGS. 9 to 11, the configuration of the above-described transfer conveyor 32 will be described. This transport conveyor 32
Shows the top shape in FIG. 9, the left side shape in FIG.
As shown in the front view of the drawing, a work W is placed, and a pair of work transfer belts 84 for transferring the work W toward the front end portion, and a pair of the work transfer belts.
And a pair of adhering material conveying belts 86 for disposing adhering materials such as runners, spools, and gates adhering to the work W in a state separated from the work W.

Here, in both of the workpiece conveying belts 84, the base end portion is set to be inclined higher than the tip end portion, while the adhered matter conveying belt 86 is
Is set to be substantially horizontal at a position lower than the work transfer belt 84 as a whole. Also, this belt for transporting adhered substances
On the base end portion of 86, a tray 88 for temporarily receiving the adhered matter separated from the work W is attached.

The chuck mechanism 34 described above is provided with a not-shown cut mechanism for cutting off adhering substances that are integrally connected to the work W while being separated from the mold 16.
Then, the adhered matter is transferred to the conveyor 32 for transporting the work W.
When it is transferred through the chuck mechanism 34 together with it, it is cut off by the cutting mechanism in a state of being placed on the base end portion of the conveying conveyer 32, and cut off on the tray 88 in an independent state. become.

Here, the chuck mechanism 34 described above changes its chuck position according to the type of the work W to be injection-molded, in other words, the type of the mold 16, and therefore its shape is also different. At present, the chuck mechanism 34 having a shape corresponding to the mold 16 installed in the injection molding unit 12 is detachably attached to the vertical slide block 82 through the lock mechanism 90.

On the other hand, in order to enable the corresponding chuck mechanism 34 to be efficiently attached to the vertical slide block 82 in accordance with the above-mentioned work of exchanging the mold 16, it is brought to the upper position as shown in FIG. Vertical slide block 82
The above-described replacement mechanism 36 is disposed at a position that horizontally opposes to.

The configurations of the replacement mechanism 36, the check mechanism 34, and the lock mechanism 90 described above will be sequentially described below.

First, as described above, the replacement mechanism 36 is in a state in which it is fixed to the first slide station 36a to which the new chuck mechanism 34 'to be attached is attached and the vertical slide block 82 through the lock mechanism 90. And a second mounting station 36b to which the chuck mechanism 34, which has been removed for replacement, is collected and mounted.

The mounting mechanism 36 is three-dimensionally mounted on the injection molding unit 12 with the vertical slide block 82 interposed therebetween, as shown in the front shape and the top shape in FIGS. 12 and 13, respectively. A rectangular parallelepiped frame body 92 is fixed at a position facing the slide mechanism 70. In this frame 92,
A rotation support member 94 is arranged rotatably around its central axis. The first and second attachment stations 36 described above are provided in a state where the rotation support members 94 are separated from each other by 180 degrees, that is, at positions facing each other about the central axis.
a and 36b are attached.

Here, the upper end of the rotation support shaft 96 of the rotation support member 94 projects above the frame body 92, and the pinion gear 98 is coaxially fixed to the projecting end. On the other hand, an air cylinder 100 as a drive source is arranged on the upper surface of the frame 92. In the piston rod 102 of this air cylinder 100,
The rack 104 that meshes with the pinion gear 98 described above is attached. The amount of protrusion of the piston rod 102 is regulated so that the pinion gear 98, that is, the rotation support member 94 is driven to rotate 180 degrees when compressed air is introduced into the air cylinder 100.

Further, when the compressed air is not introduced into the air cylinder 100 and the piston rod 102 is pulled in, the second mounting station 36b moves the vertical slide block 82b.
It is set so as to be brought to a position opposite to. In this way, when compressed air is introduced into the air cylinder 100, the rotation support member 94 is rotated 180 degrees, and the first mounting station 36a faces the vertical slide block 82.

Next, the configuration of the first and second attachment stations 36a and 36b will be described in detail with reference to FIG. Since the first and second mounting stations 36a and 36b have the same configuration, the first mounting station 36a
Only the configuration of will be described below.

The first attachment station 36a is provided with the check mechanism 3
It is configured to hold four check masters 106, which will be described later, at the four corners. Specifically, the first attachment station 36a is provided at the upper and lower ends of the rotation support member 94,
A pair of mounting arms 108 that extend horizontally parallel to each other.
It is equipped with a and 108b. A holding mechanism 110, which will be described in detail below, is attached to both ends of each attachment arm 108a, 108b. In other words, the four holding mechanisms 110 are arranged so as to correspond to the four corners of the chuck master 106.

Here, the check master 106 has various check mechanisms 3
In 4, it is set to a common size. As a result, the holding positions at the four corners of the chuck master 106, that is, 4
The installation position of the table holding mechanism 110 is
Is common to.

Each holding mechanism 110 has four corners 10 of the chuck master 106.
While being inserted into the through hole 106a formed in 6b, the through hole 106a
By grasping the peripheral part of the from both sides, each corner 106b
Are configured to be detachably held, and all have the same configuration.

Specifically, as shown in FIG. 14, each holding mechanism 110 is provided with air cylinders 112 mounted in parallel to each other at each end of each mounting arm 108a, 108b so as to project horizontally therefrom. ing. A mounting plate 114 is fixed to the tip of the air cylinder 112, and a pair of guide rods are arranged to extend from the mounting plate 114 along the same direction as the piston rod 116 of the air cylinder 112.
118a and 118b are attached.

A slide guide 120 is attached to the tip of the piston rod 116 described above, and the slide guide 120 is slidably supported by a pair of guide rods 118a and 118b along the extending direction thereof. Also, these guide rods 118 are provided on both ends of the slide guide 120.
The elongated holes 122a and 122b are formed in a state of extending along a direction orthogonal to the extending direction of the a and 118b.

A pair of locking members 126a, 126b are provided in the elongated holes 122a, 122b with the base end portions thereof inserted through the rollers 124a, 124b, respectively. Both locking members 126a, 126b extend along the above-mentioned guide rods 118a, 118b to a state in which their tip ends project from the guide rods 118a, 118b by a predetermined distance.

Here, the locking pieces 128a and 128b are attached to the tips of the locking members 126a and 126b in a state of being bent inward at 90 degrees to each other. Further, the inner surfaces of the locking pieces 128a, 128b facing each other are inclined so as to open outward. Further, each of the locking pieces 128a, 128b is elastically held in this 90-degree bent state and is allowed to fall further inward, but is not allowed to fall outward. In this way, the corners 106b of the chuck master 106 once locked inside the locking pieces 128a, 128b are respectively
It will be held in this locking position. Further, the both holding members 126a and 126b are biased outward, so that the holding state is released.

On the other hand, at the tips of both guide rods 118a and 118b, the locking member 1
A cam member 130 for biasing outward as 26a and 126b project is attached in a state in which the slide guide 120 is allowed to slide by a predetermined amount. On both sides of the cam member 130, there are a pair of cam grooves 132 in series, that is, a total of 4 cam grooves 132.
A book cam groove 132 is formed. Each cam groove 132 is formed so as to be continuous with a first cam groove portion 132a extending along the protruding direction of the piston rod 116 and a tip end of the first cam groove portion 132a, and is inclined obliquely outward. And a second cam groove portion 132b.

Here, the locking members 126 located on both sides of the cam member 130, respectively.
Rollers 134, which are inserted into the corresponding cam grooves 132, are provided at a and 126b.
Is rotatably supported. Also, both locking members 126a, 1
A pair of coil springs 136a, 136b is stretched on the 26b so as to bias them in a direction to attract each other.
Further, an insertion pin 138 that is inserted into the through hole 106a of the above-mentioned chuck master 106 is provided at the tip of the cam member 130 so as to project.

As shown in the drawing, the insertion pin 138 has a length sufficient to penetrate the corresponding through hole 106a in a state where the corner portion 106b of the chuck master 106 is locked to the tip portions of both locking members 126a, 126b. Is set to Further, the tip of the insertion pin 138 is formed in a tapered shape so as to facilitate the insertion into the through hole 106a.

Since each holding mechanism 110 is configured as described above, the piston rod 116 is biased so as to be drawn inward when compressed air is not introduced into the air cylinder 112, and as a result, the mounting plate is The pair of locking members 126a, 126b connected to the piston rod 116 via 114,
These rollers 134 come into contact with the edge of the corresponding cam groove 132 on the base end side of the first cam groove portion 132a. As a result, the locking pieces 128a, 128b respectively attached to the tips of the locking members 126a, 126b are attached to the corners of the chuck master 106.
The state in which 106b is held, in other words, the open prohibition state is set.

On the other hand, when compressed air is introduced into the air cylinder 112, the piston rod 116 is pushed outward. As a result, the pair of locking members 126a, 126b connected to the piston rod 116 via the mounting plate 114 are first arranged such that the rollers 134 pass through the first cam groove portion 132a of the corresponding cam groove 132. , Likewise pushed forward, after this,
When reaching and reaching the second cam groove portion 132b, the second cam groove portion 132b is biased outward along the inclination thereof against the biasing force of the coil springs 136a, 136b. As a result, the locking pieces 128a, 126a, 126b are respectively attached to the tips of the locking members 128a, 126b.
The 128b are further separated from each other and set to a state where they do not engage with the corner 106b of the chuck master 106, in other words, an open state.

Here, when the holding mechanism 110 is in the holding state described above, when the lock mechanism 90 of the vertical slide block 82 comes close to the chuck master 106, it is formed at each corner 106b of the chuck master 106. The corresponding insertion pin 138 of the holding mechanism 110 is inserted into the through hole 106a to perform positioning. Then, when further approaching, the respective corner portions 106b are respectively engaged with the locking pieces 128a, 128b of the corresponding holding mechanism 110. Then, according to this engagement, both locking pieces 128a, 1
28b falls inward, and each corner 106b has a locking piece 1
It will overcome 28a and 128b and be taken inside.

On the other hand, when the corner 106b gets over the locking pieces 128a, 128b while inclining the locking pieces 128a, 128b inward, the locking pieces 128a, 128b are erected 90 degrees from the locking members 126a, 126b by their own biasing force. Return. In this way, the check master 106
The respective corners 106b of the above are respectively held by the corresponding holding mechanisms 110, and as a result, the chuck master 106 is securely attached to and held by the first attachment station 36a.

Next, the structure of the check mechanism 34 for checking the work W will be described with reference to FIGS. 15 and 16.

As described above, the chuck mechanism 34, as shown in FIG. 15, is a chuck member 140 (indicated by a chain line in FIG. 8) formed in conformity with the shape of the work W formed by various molds 16. Shown) and all check members 14
A check master 106 having a common shape and size is provided.

The chuck master 106 includes a pair of mounting arms 142a, 142b extending in the vertical direction and arranged in parallel with each other with a predetermined distance therebetween, and the mounting arms 142a, 142a, 142b.
In order to connect the center parts of the 142b to each other, the main plate 144 laid along the lateral direction and the upper and lower ends of these mounting arms 142a and 142b are connected to each other to reinforce each other in the lateral direction. And a pair of cross members 146a and 146b that are bridged along.

Here, the four corners 106b of the chuck master 106 are defined by the ends of the mounting arms 142a, 142b. That is, the above-described through hole 106a is formed at each end (each corner) of each mounting arm 142a, 142b.

Further, on the left and right sides of the surface of the above-mentioned main plate 144 (the surface that appears in the figure in the illustrated state), all formed in accordance with the shapes of the works W respectively formed by the various molds 16. A pair of handle members 148 to which the chuck members 140 are attached are attached. On the other hand, as shown in FIG. 16, lock pins 150 for detachably locking the vertical slide block 82 of the three-dimensional slide mechanism 70 are detachably attached to the left and right end portions of the back surface of the main plate 144, as will be described later. Each is fixed via a nut 152.

As shown in the figure, the lock pin 150 is integrally connected to a head 150a having a necked middle portion and the head 150a, and is tapered so that its diameter gradually increases toward the proximal end. And a skirt portion 150b having a slope.

In this way, the chuck member 140 attached via the handle member 148, the chuck master 106, and the lock pin 15
With 0, the chuck mechanism 34 formed exclusively for the corresponding mold 16 is configured.

Next, with reference to FIG. 17, the structure of the locking mechanism 90 for detachably locking the vertical slide block 82 and the chuck mechanism 34 will be described in detail.

As shown in the drawing, the locking mechanism 90 includes air motors 154 that are attached to portions of the vertical slide block 82 that face the pair of locking pins 150 of the chuck mechanism 34 described above. The air motor 154 includes a pair of input ports 156a and 156b into which compressed air is introduced. The air motor 154 is configured such that when the compressed air is introduced into either one of the input ports 156a and 156b, the rotary shaft 158 is rotationally driven in a state in which the rotational direction is determined.

A hollow attachment housing 160 is fixed to the tip surface of the air motor 154 with the tip of the drive shaft 158 protruding inside. An insertion hole 160b that allows the lock pin 150 to be inserted is formed in a front portion of the attachment housing 160, that is, a portion 160a facing the lock pin 150. Here, the thickness of the insertion hole 160b is set so as to be substantially equal to the width of the lock pin 150 in which the skirt portion 150b is provided, and the inner peripheral surface of the insertion hole 150b is defined by the skirt portion 150b. It is formed of a tapered surface so as to complementarily match the tapered surface.

Here, in the state where the lock pin 150 is inserted so that the skirt portion 150b contacts the inner peripheral surface of the insertion hole 160b, as shown in the drawing, the head portion 150a of the lock pin 150 is taken into the attachment housing 160. It is set. In other words, the lock pin 150 is provided between the inner surface (rear surface) of the front portion 160a of the attachment housing 160 and the front surface of the drive gear 162.
Sufficient space is defined so that the head 150a of the device can be projected.

In addition, a drive gear 162 is disposed in the attachment housing 160 in a state of being coaxially fixed to the tip of the drive shaft 158. A pair of driven gears 164a and 164b, which are in mesh with the drive gear 162 in the upper and lower sides in the drawing, have a drive axis line parallel to the drive axis line of the drive gear 162 and are rotatably supported by the attachment housing 160. Has been done.

On the other hand, cam rollers 166a and 166b that are eccentric from the respective rotation axes are connected to the tip ends of the driven gears 164a and 164b so as to rotate integrally. In addition, the cam roller located above
A first fitting member 168a having a lower surface shape that complementarily fits with the upper portion of the head portion 150a of the lock pin 150 inserted into the attachment housing 160 is rollingly contacted with the lower portion of the outer peripheral surface of the 166a. There is. Further, the upper portion of the outer peripheral surface of the cam roller 166b located below is provided with a second fitting having an upper surface shape which complementarily fits the lower portion of the head portion 150a of the lock pin 150 inserted into the attachment housing 160. The compound member 168b is rolling.

The first and second fitting members 168a and 168b are respectively provided with corresponding cam rollers 16 by coil springs (not shown).
It is constantly urged to press against the outer peripheral surfaces of 6a and 166b.

Here, the state of the lock mechanism 90 shown in FIG. 17 shows the unlock state. That is, as shown in the figure, in this unlocked state, in the respective outer peripheral surfaces of the pair of cam rollers 166a, 166b, the portions at the shortest distances from the rotation axis of the corresponding driven gears 164a, 164b correspond to the corresponding fitting. Member 168a, 168
It is defined by the state of rolling contact with b, and as a result, the fitting members 168a, 168b are biased laterally away from the head 150a of the lock pin 150 through which the fitting members 168a, 168b are inserted.

On the other hand, although the locked state is not shown, the portions of the pair of cam rollers 166a, 166b that are at the farthest distances from the rotation axis of the corresponding driven gears 164a, 164b in the outer peripheral surfaces of the corresponding cam rollers 166a, 166b are in the corresponding fitting state. It is defined by the state of rolling contact with the members 168a, 168b and, as a result, being biased to a position laterally fitted to the head 150a of the lock pin 150 through which the fitting members 168a, 168b are inserted.

The locking operation of the locking mechanism 90 configured as described above will be described below. That is, in the unlocked state shown in FIG. 17, the vertical slide block 82 moves along the lateral direction, and the lock pin 150 of the chuck mechanism 34 attached to the second attachment station 36b relatively inserts the lock mechanism 90. It is inserted into the hole 160b. Then, the tapered surface of the skirt portion 150b of the lock pin 150 and the insertion hole 160
When the tapered surfaces constituting the inner peripheral surface of b come into contact with each other and further horizontal movement of the vertical slide block 82 is blocked, this movement is stopped.

Simultaneously with this stop, compressed air is introduced into the air motor 154 via the one input port 156a, and the rotary shaft 158 rotates. In response to the rotation of the rotary shaft 158, the drive gear 162 and a pair of driven gears 164a and 164b that mesh with the drive gear.
Rotates, and as a result, both cam rollers 166a and 166b also rotate.

In this way, on the outer peripheral surface of each cam roller 166a, 166b, the portion rolling on the fitting members 168a, 168b moves from the portion located at the shortest distance to the portion located at the farthest distance. Therefore, the fitting members 168a and 168b are
The lock pin 150 is locked by the locking mechanism 90 from the unlock position where it does not fit to the head 150a of the inserted lock pin 150, to the locking position where it engages. In other words, via the locking mechanism 90, the check mechanism 34
Will be integrally connected to the upper and lower slide blocks 82.

On the other hand, when the locking mechanism 90 is released from the locked state, that is, when the locking mechanism 34 is unlocked and the chuck mechanism 34 is removed from the up / down slide block 82, contrary to the locking operation described above,
The action is executed. That is, compressed air is introduced into the air motor 154 via the other input port 156b, and the rotating shaft 158 rotates in the opposite direction. The cam rollers 166a and 166b also rotate in the opposite direction according to the rotation of the rotating shaft 158 in the opposite direction.

In this way, on the outer peripheral surface of each cam roller 166a, 166b, the portion rollingly contacted with the fitting members 168a, 168b shifts from the portion located at the farthest distance to the portion located at the shortest distance. Therefore, the fitting members 168a and 168b are
The lock pin 150 is unlocked by the lock mechanism 90 from the lock position where it is fitted to the head 150a of the inserted lock pin 150, to the unlock position where it is separated.
In other words, through this locking mechanism 90, the checking mechanism is
34 is released from the state in which it is integrally connected to the upper and lower slide blocks 82.

The replacement operation of the chuck mechanism 34 in the take-out device 28 configured as described above will be described.

Specifically, when the molding operation of the work W via the mold 16 that is installed in one of the injection molding units 12 and is used for the injection molding operation is completed, as described above,
This mold 16 is replaced, and a new mold 16 'is installed in the injection molding unit 12. Here, in order to take out the work W from the new mold 16 ', the chuck mechanism 34 for chucking the work W is also replaced at the same time when the mold 16 is replaced.

Here, the mold 1 to be newly installed on the first replacement station 36a in the replacement mechanism 36.
A new check mechanism 34 'corresponding to 6'is attached. On the other hand, nothing is attached to the second replacement station 36b so that the chuck mechanism 34, which is currently used and is removed by replacement, can be installed. Further, this empty second replacement station 36b
Is rotated and held at a position facing the vertical slide block 82.

From this standby state, when the replacement operation of the mold 16 is started,
In response to this, the exchange operation of the check mechanism 34 is activated.

Specifically, in the replacement operation of the check mechanism 34,
First, the vertical slide block 82 is moved to the vertical position facing the replacement mechanism 36, and thereafter, in response to the lateral slide of the horizontal slide block 76, the proximity operation is started toward the second replacement station 36b. .

Then, a pair of locking mechanisms 90 are attached to the upper and lower slide blocks 82.
The four corners 106b of the chuck master 106 of the check mechanism 34, which are integrally connected via the above, are respectively held by the four holding mechanisms 110 provided in the second replacement station 36b. After that, both locking mechanisms 90 are moved from the locked state to the unlocked state, and the check master
The lock pin 150 fixed to 106 is released from the state of being locked by the locking mechanism 90, and is brought into a free state.

After that, the left and right slide blocks 76 slide in the opposite direction, and the upper and lower slide blocks 82 are separated from the second replacement station 36b. Here, as described above, the locking mechanism 90 is brought to the unlocked state,
Since the check mechanism 34 is held by the second replacement station 36b via the four holding mechanisms 110, depending on the separation of the vertical slide block 82, the check mechanism 34
Is removed from the upper and lower slide blocks 82 and is independently held by the second replacement station 36b.

Then, in the replacement mechanism 36, the air cylinder 100 is activated to rotate the rotation support member 94 by 180 degrees. In response to this rotation, the second replacement station 36b, to which the chuck mechanism 34 removed from the vertical slide block 82 is attached, is brought to the opposite side and is newly attached to the vertical slide block 82. The first replacement station 36a to which the
It is brought to a position facing the vertical slide block 82 which is temporarily separated laterally from the replacement mechanism 36.

After this, the upper and lower slide blocks 82 are replaced again.
By approaching 36, the lock pins 150 of the new check mechanism 34 'respectively enter into the pair of lock mechanisms 90 set in the unlocked state. Then, as each locking mechanism 90 shifts from the unlocked state to the locked state, these locking pins 150 are locked by the corresponding locking mechanism 90.

At the same time as this locking operation, the first replacement station
The four holding mechanisms 110 in 36a are the new check mechanism 3
It will be brought to the state of releasing the state of holding 4 '. As a result, as the vertical slide block 82 slides away from the replacement mechanism 36,
The new check mechanism 34 'is the first replacement station 3
It is detached from 6'and attached to the upper and lower slide blocks 82 so as to be integrally connected via the locking mechanism 90. In this way, the replacement operation of the check mechanism 34 is completed.

Here, in the second replacement station 36b brought to the outside, the exchanged chuck mechanism 34 is removed from here, and the next chuck mechanism 34 to be attached is newly attached. At this point, the second replacement station newly functions (changes) as the first replacement station, and
The first replacement station 36a having the new check mechanism 34 'transferred to the vertical slide block 82 will function (change) as the second replacement station this time.

It goes without saying that the present invention is not limited to the configuration of the above-described embodiment and can be variously modified without departing from the scope of the present invention.

[Effects of the Invention] As described in detail above, according to the present invention, the molding die that can effectively utilize the arrangement space in the factory and is detachably provided to the injection molding unit is set. It is possible to provide an injection molding device that can be used immediately afterwards and can be used efficiently.

[Brief description of drawings]

1 and 2 are a plan view and a right side view, respectively, schematically showing the construction of an embodiment of the injection molding apparatus according to the present invention; FIGS. 3 and 4 show the construction of a residual heat station, respectively. 5 is a front view showing the structure of the automatic guided vehicle; FIG. 6, FIG. 7 and FIG. 8 are front views showing the overall structure of the take-out device, respectively. FIG. 9, FIG. 10, and FIG. 11 show the overall structure of the carrier conveyor, respectively, a top view, a left side view, and a front view; FIG. 14 is a front view and a top view showing the overall structure of the replacement mechanism, respectively. FIG. 14 is a top view showing the structure of the mounting station, and FIG. 15 is a front view showing the structure of a check master of the check mechanism. Figure 16 shows the cross-section of the lock pin fixed to the check master. FIG. 17 is a side sectional view showing the structure of the locking mechanism. In the figure, 10 ... Injection molding device, 12; 14 ... Injection molding unit, 16 ... Mold, 18; 20 ... Remaining heat station, 22 ...
Mold placing station, 24 …… Mold picking station, 26 …… Unmanned transport vehicle, 28 …… Unloading device, 30 …… Unloading mechanism, 32 …… Conveyor conveyor, 34 …… Check mechanism, 36 …… Replacement Mechanism, 36a ... first mounting station, 36b ... second mounting station, 38
...... Base, 40 ...... Fixed positioning base, 42 ...... Movement positioning base, 44 ...... Hydraulic cylinder mechanism, 46 ...... Connection port, 48 ...
… Conveyance path, 50 …… Conveying rollers, 52 …… Drive motor, 54…
… Carry-in roller, 56; 58 …… Drive motor, 60 …… Rail, 7
0 …… 3-dimensional slide drive mechanism, 72 …… Support body, 74…
… Left and right support arms, 76 …… Left and right slide blocks, 78…
... front and rear support arm, 80 ... front and rear slide block, 82 ...
… Vertical slide block, 84 …… Work transfer belt,
86 ... Belt for transporting adhering matter, 88 ... Pan, 90 ... Lock mechanism, 92 ... Frame, 94 ... Rotation support member, 96 ... Rotation support shaft, 98 ... Pinion gear, 100 ... Air cylinder , 102
...... Piston rod, 104 ...... Luck, 106 ...... Check master, 106a ...... Through hole, 108a; 108b ...... Mounting arm, 110 ...... Holding mechanism, 112 ...... Air cylinder, 114 ......
Mounting plate, 116 …… Piston rod, 118a; 118b …… Guide rod, 120 …… Slide guide, 122a; 122b …… Oval hole,
124a; 124b ... Roller, 126a; 126b ... Locking member, 128a; 1
28b …… Locking piece, 130 …… Cam member, 132 …… Cam groove, 132
a …… first cam groove part, 132b …… second cam groove part, 1
34 …… Roller, 136a; 136b …… Coil spring, 138…
... Insertion pin, 140 ... Check member, 142a; 142b ... Mounting arm, 144 ... Main plate, 146a; 146b ... Cross member, 148 ... Han, 146a; 146b ... Cross member, 14
8 …… Handle member, 150 …… Lock pin, 150a …… Head, 150b …… Skirt part, 152 …… Nut, 154 …… Air motor, 156a; 156b …… Input port, 158 …… Rotary shaft, 16
0 ... Attachment housing, 160a ... Front part, 160b ... Insertion hole, 162 ... Drive gear, 164a; 164b ... Drive gear, 166
a; 166b ... Cam roller, 168a; 168b ... fitting member.

Claims (1)

[Claims] 1. A pair of injection molding units which are arranged in parallel with each other and each independently perform an injection molding operation, and an injection molding die which is disposed between these injection molding units and is removed from each injection molding unit. The mold is conveyed and placed, and a mounting station having a conveying mechanism having rollers that rotate forward and backward by a reversible rotation motor, and the vicinity of the injection molding unit on the side facing the arrangement side of the mounting station. Of the preheating station, a moving positioning mechanism for relatively positioning the injection mold in the preheating station, and pipes for raising the injection mold to a predetermined temperature after the relative positioning. An injection molding device, comprising: a fixed positioning mechanism for connection.