JPH0142809B2 - - Google Patents

Description

Detailed Description of the Invention Technical Field The present invention relates to an injection molding system for producing a predetermined molded product by injecting a resin material into a mold of an injection molding machine, and particularly for replacing the mold of an injection molding machine as appropriate. The present invention relates to an injection molding system capable of producing multiple types of molded products.

Conventional technology CAD/CAM has made remarkable progress, and in recent years, all kinds of factories have been using FA (factory automation). In injection molding systems that produce predetermined molded products by injecting resin material into the mold of an injection molding machine, stable supply of molded products with a high quality level is achieved.
With the aim of improving productivity and saving energy in equipment, systems that automate everything from supplying resin materials to transporting molded products have become available.

Problems with conventional technology On the other hand, market needs are becoming increasingly diverse.
As for the injection molding system described above, there is a desire for a system that enables production of a wide variety of products in small quantities instead of the conventional one-product, high-volume production. however,
In order to perform high-mix, low-volume production, it is necessary to replace the mold of the injection molding machine as appropriate depending on market needs and production plans, but conventional injection molding systems do not have a system for such mold replacement. was not fully established. And, as one of the reasons,
The problem is that the mold conveyance device between the mold station, which stores multiple types of molds, and the injection molding machine has not yet been established to the extent that the mold exchange system can be fully automated. In other words, when replacing the mold of an injection molding machine, the storage mold removed from the injection molding machine is transported to the mold station, and the replacement mold removed from the mold station is transported to the injection molding machine. As a result, the conveyance device became complicated and the injection molding system became large-scale, making it unsatisfactory.

First Means for Solving the Problems In order to solve the above-mentioned problems, the injection molding system according to the first invention provides: An injection molding machine that injects a molded resin material to form a predetermined molded product, and (b) a mold that allows multiple molds installed in the injection molding machine to be arranged side by side so that they can be taken out and stored. (c) a replacement mold that is removed from the mold station and installed in the injection molding machine; and (c) a replacement mold that is removed from the injection molding machine and installed in the injection molding machine. The mold station includes a storage mold to be stored in a mold station, and a mold truck having a rotary table that can be mounted and rotated at a predetermined position, and the mold is mounted by rotating the rotary table of the mold truck. While changing the mounting positions of the replacement mold and the storage mold, the replacement mold is mounted on the injection molding machine by moving the mold cart, and the storage mold is moved to the storage position of the mold station. It was made to be stored in the

Functions and Effects of the First Invention In such an injection molding system, first, the exchange mold taken out from the mold station and the storage mold removed from the injection molding machine are placed at a predetermined position on the rotary table of the mold cart. mounted at each location. The mounting position of the mounted mold is changed by the rotation of the rotary table, and the mold cart is moved between the injection molding machine and the mold station, so that the replacement mold can be used for injection molding. The mold is transported to a molding machine and installed therein, and the storage mold is transported to a mold station and stored in its storage position.

Therefore, transporting replacement molds from the mold station to the injection molding machine and transporting stored molds from the injection molding machine to the mold station can be easily carried out using a single mold trolley. This can be done quickly, making it possible to fully automate an injection molding system with a complex mold change function, and also allowing the equipment to be compactly constructed.

Second Means for Solving the Problem Furthermore, in order to solve the problem, an injection molding system according to a second invention includes (a) an injection molding machine, which is a component of the first invention, and (b) ) Along with the mold station, (a) a mold preheating device that preheats the mold taken out from the mold station at a predetermined temperature, and (b) an injection molding machine, a mold station, and a mold preheating device. A replacement mold is installed in the injection molding machine after being taken out from the mold station, preheated in the mold preheating device, and then removed from the injection molding machine. The mold station is configured to include a storage mold stored in a mold station, and a mold truck having a rotary table capable of mounting and rotating the molds at predetermined positions, respectively, and by rotating the rotary table of the mold truck, While changing the mounting positions of the mounted replacement mold and storage mold, the replacement mold is mounted on the injection molding machine by moving the mold cart, and the storage mold is moved to the mold station. It was made to be stored in the storage position.

Functions and Effects of the Second Invention In such an injection molding system, not only can the same functions and effects as those of the first invention described above be obtained, but also the exchange mold taken out from the mold station is preheated. After being preheated to a predetermined temperature in the equipment, it is transported to the injection molding machine and installed, so when the resin material is injected into the product cavity in the mold, the fluidized resin material is injected into the mold. There is no risk of product defects (shoots) caused by cooling, and molded products of excellent quality can be obtained immediately after replacing the mold. Therefore, even when molds are frequently replaced in order to produce many types of products in small quantities, molded products of excellent quality can be efficiently produced.

Embodiment Next, in order to clarify the present invention more specifically, one embodiment of the present invention will be described in detail based on the drawings.

First, FIGS. 1 to 3 are diagrams for explaining the outline of an injection molding system that is an embodiment of the present invention, and FIG. 1 is a schematic front view of an apparatus embodying the injection molding system. 2 is a schematic plan view of the apparatus of FIG. 1; FIG. Further, this device has a two-stage structure, upper and lower, and FIG. 3 is a schematic plan view showing the structure of the lower stage.

In these figures, 10, 12, and 14 are ordinary injection molding machines, which, as is well known, inject fluidized resin material into a product cavity formed in a clamped mold. At the very least, a predetermined molded article is formed. One injection molding machine 10 is arranged on the front side of the lower stage of the apparatus, while two injection molding machines 12 and 14 are arranged symmetrically on the front side and the opposite side (rear) of the upper stage. . The molded products formed by these injection molding machines 10, 12 and 14 are discharged onto conveyors 22, 24 and 26 from shooters 16, 18 and 20, respectively.
They are transported as shown by arrows A, B and C and stored separately on stock shelves 28, 30 and 32. In addition, in Figure 1, 3
4 and 36 are protective walls and protective doors that cover the mold clamping mechanisms of the injection molding machines 10 and 12;
Similar protective walls and doors are also provided.

On the other hand, a mold station 38 is disposed at the rear of the injection molding machine 10. This mold station 38 allows a plurality of molds 40 mounted on the injection molding machines 10, 12, and 14 to be arranged side by side so that they can be taken out and stored, and is provided with a plurality of (seven in this embodiment) storage areas 42. It has two upper and lower storage stands (the lower storage stand is not shown). and,
Seven storage areas 42 provided on the upper storage stand
Among them, a total of four storage areas 42, two provided at both ends, and seven storage areas 42 provided on the lower storage table each have a large number of rollers 4.
4 are arranged in parallel, and the mold 40 is stored in the storage area 42 or taken out from the storage area 42 while being guided by the rollers 44.

A preheating device 46 is disposed in the center of the upper storage table, spanning three storage areas 42. The preheating device 46, as also shown in FIG. 4, includes a fixed plate 52 and a movable plate 54, each having parallel opposing surfaces 48 and 50, the movable plate 54 being fixed to a bracket 56. The fixed plate 52 is driven toward and away from the fixed plate 52 by a cylinder 58. This cylinder 58 constitutes a clamping means.

Further, on the opposing surfaces 48 and 50 of the fixed plate 52 and the movable plate 54, near the rear edges thereof, there are vertically long connecting portions 62 that protrude toward the opposing surfaces 50 and 48, respectively.
and 64 protrude, and two male couplers 66 projecting forward are vertically provided on the front surface (front side surface) of the connecting portion 62, and two male couplers 66 are vertically provided on the opposite surface of the connecting portion 64. Two male couplers 68 that protrude toward the opposing surface 48 are vertically provided on the surface facing the surface 48 (both male couplers 66 and 68 located below are not shown). One of the male couplers 66, 68 provided with two male couplers 66, 68 has connecting portions 62, 6.
A high-temperature temperature regulating medium such as a mixture of ethylene glycol and water is supplied from passages formed in the coupler 4 and piping (not shown), and from the other male couplers 66 and 68. The temperature regulating medium is discharged through passages formed in the connecting portions 62 and 64 and piping (not shown).

The male couplers 66 and 68 are constructed in exactly the same way, and have a cylindrical shape with a threaded portion 84 that is screwed onto the connecting portion 62 or 64, as is clear from the partially cutaway sectional view of FIG. The valve body 88 is provided with a fixing member 86 and a valve body 88 provided within the fixing member 86 so as to be movable in the axial direction. The valve body 88 is composed of a small-diameter shaft portion 90 and a large-diameter head portion 92, and the shaft portion 90 is slidable in the axial direction by an annular support member 94 fixed within the fixed member 86. movably supported. Further, a compression coil spring 96 is interposed between the support member 94 and the head 92, and the valve body 88 is always urged in a direction to protrude outward from the fixed member 86. Note that a plurality of notches 98 are formed in the support member 94.

Further, the inner diameter of the fixing member 86 is larger than that of the head 92, so that an annular space 100 is formed between the fixing member 86 and the valve body 88.
An inward flange 102 having an internal tapered surface is provided at the protruding end of the fixing member 86 .
The inner diameter of the inward flange 102 is smaller than that of the head 92. Therefore, the male couplers 66 and 68 are connected to the valve body 8 under normal conditions.
8 is seated on the tapered surface of the inward flange 102 according to the urging force of the compression coil spring 96, and communication between the internal space 100 and the outside is maintained in a state of being blocked. Note that the head 92 of the valve body 88
A seal member 104 made of rubber is covered, and the space between the head 92 and the inward flange 102 is liquid-tightly sealed.

On the other hand, a storage area 42 located in the middle of the three storage areas 42 in which the preheating device 46 is arranged is provided with a large number of rollers 44 like the other storage areas 42. A mold 40 is guided between the plate 52 and the movable plate 54. As is clear from FIG. 4, the mold 40 is a fixed mold 7 having a flange 70.
2 and a movable mold 76 having a flange 74, and the fixed mold 72 includes the male coupler 66.
Two female couplers 78 are provided which engage male and female, respectively, and a connecting part 80 is provided on the movable mold 76 in a protruding position opposite to the connecting part 64. Two female type couplers 82 are provided which are male and female fitted to the type coupler 68, respectively. Two female couplers 78 and 8 are provided on the fixed mold 72 and the movable mold 76, respectively.
2 are fixed to both openings of temperature regulating medium passages formed in the fixed mold 72 and the movable mold 76, respectively.

The female couplers 78 and 82 are constructed in exactly the same way, and as is clear from the partially cutaway sectional view of FIG. A fixing member 108 is provided. A stepped insertion hole consisting of a small diameter portion 110 and a large diameter portion 112 is formed in the axis of the fixed member 108, and a cylindrical valve body 114 is slidably fitted into the small diameter portion 110. On the other hand, the large diameter portion 112 is sized to fit the protruding end of the male coupler 66 or 68 with a slight gap. Note that the opening of the large diameter portion 112 is provided with a tapered surface, so that the male coupler 6
6, 68 is said to be easy to fit.

A shaft member 116 is fixedly provided within the insertion hole of the fixing member 108. The shaft member 116 is connected to the valve body 11
4 and a head 118 having a larger diameter than the inner diameter of the valve body 11.
4 and a shaft portion 120 having a smaller diameter than the inner diameter of
The flange portion 122 is fixedly installed at the open end of 10, that is, the end buried in the fixed mold 72 or the connecting portion 80.
A compression coil spring 124 is inserted between the flange portion 122 and the valve body 114, and the valve body 1
14 is always biased in the direction of protruding outward from the fixing member 108. Therefore, female coupler 7
8 and 82 are the valve body 11 in the normal state.
4 is seated on the head 118, and an annular internal space 126 is formed around the shaft portion 120.
communication with the outside world is maintained.
In addition, a plurality of notches 128 are formed in the flange portion 122, and a rubber seal member is provided on the protruding end face of the valve body 114 and the stepped portion between the small diameter portion 110 and the large diameter portion 112. 130 and 132 are attached. In addition, the shaft member 11
The outer diameter of the head 118 of the male coupler 66,
smaller than the inner diameter of the inward flange 102 of 68;
The outer diameter of the valve body 114 is larger than the inner diameter of the inward flange 102.

Then, a male coupler 66 having the above configuration,
68 and the female couplers 78, 82 are brought relatively close to each other, thereby allowing the spaces 100 and 126 to communicate with each other. That is, as is clear from FIG. 7, when the male couplers 66, 68 and the female couplers 72, 80 are brought close to each other, the protruding end of the fixing member 86 first enters the large diameter portion 112 of the fixing member 108. After that, the fixing member 8
6, that is, the end surface of the inward flange 102 abuts against the valve body 114 and causes it to retreat, and the head 118 of the shaft member 116 abuts against the head 92 of the valve body 88 and causes it to retreat. This opens both the valve body 114 and the head 118 and the valve body 92 and the inward flange 102, allowing the spaces 100 and 126 to communicate with each other. Note that the inward flange 102 and the head 118 are connected to the other valve bodies 114 and 88, respectively.
It forms a protrusion that allows the to move.

Therefore, the high temperature temperature regulating medium supplied into the connecting parts 62 and 64 from piping (not shown) passes through the male couplers 66 and 68 and the female couplers 78 and 82 to the fixed type 72 and the movable type 76, respectively. After flowing into one opening of the temperature regulating medium passage formed in the temperature regulating medium passage and passing through the temperature regulating medium passage, it is connected from the other opening via the other female couplers 78 and 82 and the male couplers 66 and 68. It flows out into the parts 62 and 64 and is further discharged to the outside through a pipe (not shown). The fixed mold 72 and the movable mold 76 are preheated to predetermined temperatures by the passage of the temperature regulating medium. These male couplers 6
6, 68 and female couplers 78, 82 constitute coupling means.

Here, in the normal state in which the male couplers 66, 68 and the female couplers 78, 82 of this embodiment are separated, communication with the outside is cut off according to the urging force of the compression coil springs 96 and 124. As a result, there is almost no liquid leakage due to disconnection. Furthermore, when connecting and disconnecting the two, it is sufficient to simply bring them close to each other and separate them, so that automatic control of the preheating device 46 is possible. Incidentally, in this embodiment, a locking pawl 136 (see FIG. 8) provided on a mold cart 134 (described later) is locked to a locking portion 138 fixed to a flange 70 of the mold 40. ,
The mold 40 is attached to the fixed plate 5 of the heating device 46.
2, the male coupler 66
and the female coupler 78, and then the cylinder 58 connects the movable plate 54 to the fixed plate 5.
2, the male coupler 68 and female coupler 82 are coupled together. Note that in this state, there is no problem in releasing the locking between the locking pawl 136 and the locking portion 138, and when separating both couplers, the reverse operation of the above explanation, that is, the cylinder 58 is used. After the movable plate 54 is separated from the fixed plate 52, the locking claw 136 is locked with the locking portion 138, and the mold 40 is pulled out.

Returning to FIGS. 1 to 3, the injection molding machines 10 and 12 are provided on the front side of the apparatus, and the mold station 38 is provided on the opposite side (rear) of the apparatus.
A rectangular space is formed in the vertical direction between the molding machine and the injection molding machine 14, and an elevating plate 140 is disposed to be movable up and down. On the elevating plate 140, the second and third
A rail plate 144 on which two rails 142 are fixed is provided along the left and right direction in the figure, and a mold cart 134 having a rotary table 146 is movably disposed on the rail 142. . Note that a footboard 148 for the operator is provided on the elevator board 140 in addition to the rail board 144.

As shown in detail in FIGS. 8 and 9, the mold truck 134 includes a disc-shaped base 152 provided with four wheels 150 that are placed on the rails 142. There is. A ball nut 154 is fixed to the base 152, and a male screw 158 that is driven to rotate in both forward and reverse directions by a pulse motor 156 is screwed into the ball nut 154 (see FIGS. 2 and 3). . As a result, the base 152 is reciprocated along the rail 142, and when a stop signal is output from the position detection means such as a limit switch, each storage area 42 and each injection molding machine 10,
It is designed to be stopped at a predetermined position corresponding to 12 or 14.

The rotary table 146 is rotatably placed on the base 152, and the rotary table 14
6 is a pulse motor 16 provided on the base 152
It is rotated by 180 degrees by 0. Mounting devices 162 and 164 for mounting two molds 40, respectively, are symmetrically provided on the rotary table 146.

One mounting device 162 includes a guide mechanism 166 that guides the mold 40, a mold locking mechanism 168 that locks and releases the locking claw 136 in the locking portion 138 provided on the mold 40, and A mold in which the mold locking mechanism 168 is moved toward or away from the injection molding machine 10, 12, or 14 or the mold station 38, and the mold 40 locked by the locking claw 136 is sent into or taken out from them. A moving means 170 is provided.

The guide mechanism 166 includes a plurality of rollers 172 arranged in parallel, and a guide provided at one end of the rollers 172 along the arrangement direction of the rollers 172, that is, in a direction perpendicular to the axis of the rollers 172. It is composed of a plate 174. At a predetermined position on the side of the roller 172 where the guide plate 174 is provided,
A flange 176 on the disk is fixed, and the mold 40 is configured such that the flange 70 of the fixed mold 72 is guided by the flange 176 and is moved while slidingly contacting the guide plate 174. Note that each storage area 42 of the mold station 38 also has this guide mechanism 166.
The structure is exactly the same as that of the roller 4.
4 has a collar fixed thereto, and a guide plate is provided in the storage area 42.

The mold locking mechanism 168 has one end attached to the bracket 1.
Locking pawl 136 rotatably supported by 78
and a cylinder 180 which is rotatably supported by the bracket 178 and whose output rod is rotatably connected to an intermediate position of the locking pawl 136. As the cylinder 180 operates, the locking claw 136 is slightly rotated about the one end, and its tip is locked and released by the locking part 138 of the mold 40. . That is, this cylinder 180 locks and locks the locking pawl 136.
It serves as an operating means for operating the release.

The bracket 178 is secured to a moving member 184 which is slidably fitted into a guide rod 182. The moving member 184 is provided with a female thread 186 in which a large number of balls are arranged, and this female thread 186 has a male thread 190 that is driven to rotate in both forward and reverse directions by a pulse motor 188.
are screwed together. As a result, the moving member 184
is caused to reciprocate along the guide rod 182, and along with this movement, the mold 40, which is locked by the locking pawl 136, is moved. These moving members 184, pulse motor 188 and male screw 1
90 and the like constitute the mold moving means 170. Note that the mold 40 is inserted into the preheating device 46.
The feeding of the mold 40 and the removal of the mold 40 from the preheating device 46 are performed by the mold moving means 170.

The mounting device 162 has been described above, but the mounting device 164 is also configured in exactly the same way as the mounting device 162, so the same reference numerals are given and the explanation will be omitted.

The elevating plate 140 on which such a mold cart 134 is disposed is shown in FIGS. 10 and 1, for example.
As shown in Figure 1, it is moved in the vertical direction. That is, rotary shafts 196 and 198 to which two sprockets 194 are fixed are provided at both upper and lower ends of a gate-shaped arm 192 (see FIG. 1) provided at both left and right ends of the device, and a rotation shaft between the upper and lower sprockets 194 is provided. A chain 202 to which an elevating plate 140 and a balance weight 200 are fixed is wound around the chain 202, and a lower rotation shaft 196 is connected to a pulse motor 20.
4 in both forward and reverse directions, the elevating plate 140 is moved to a predetermined height. In this case, the height position of the elevating plate 140 is detected by a limit switch or the like, and the operation of the pulse motor 204 is thereby stopped.

Each of the injection molding machines 10, 12, and 14 is provided with a roller 206 for guiding the mold 40 to its mold mounting location (see FIGS. 2 and 3). This roller 206 is provided with a flange like the rollers 44 and 172 described above, and a guide plate is provided near the roller 206. Therefore, the mold 4 transported from the mold station 38 by the mold cart 134
0 is guided by the rollers 206 and sent to a predetermined mold mounting location of the injection molding machine 10, 12 or 14 by the mold moving means 170.

Furthermore, as is clear from FIG. 12, the fixed platen 208 and the movable platen 210 to which the molds 40 of the injection molding machines 10, 12, and 14 are attached are provided with fixing devices 212 on the upper and lower sides for fixing the molds 40, respectively. One is provided for each. Fixing device 212
Since both have the same structure, the fixing device 212 provided below the movable platen 210 will be described below with reference to FIGS. 13 and 14.

In these figures, 214 is the main body of the fixing device 212, which is fixed to the mounting surface 218 of the movable platen 210 with two bolts 216. Main body 2
A notch is formed in the portion through which the fourteen bolts 216 are inserted and in contact with the mounting surface 218, and a rotatable roller 220 is disposed around the bolt 216. Therefore,
The mold 40 has been sent in while being guided by the roller 206, and the flange 74 of the movable mold 76 is positioned on the roller 220.

An insertion hole 222 is formed in the main body 214, and the insertion hole 222 approaches the mounting surface 218 as it goes upward, and a fixing member 224 is movably fitted into the insertion hole 222. In addition, the fixing member 224
An engagement surface 22 parallel to the mounting surface 218 is provided at the tip of the
6 is formed, and a main body 2 is formed at the proximal end.
The output rod 230 of the cylinder 228 is fixed below the insertion hole 222 and on the extension line of the insertion hole 222.
are connected by a lock pin 232. Therefore, when the output rod 230 of the cylinder 228 is pushed out, the fixing member 224 is also pushed upward along the insertion hole 222, and the wedge action of the insertion hole 222 causes the engagement surface 226 to be pushed against the mounting surface 218. The movable mold 76 is fixed to the movable platen 210 by sandwiching the flange 74 between them. Note that the lock pin 232 is removable and is attached to the flange 7.
The fixing member 224 can be replaced depending on the wall thickness of 4.

In the injection molding apparatus configured as described above, when replacing the mold 40 attached to the injection molding machine 10, 12 or 14, first, the mold 40 to be replaced (replacement mold) is replaced. It is taken out from the mold station 38 and preheated in a preheating device 46. That is, first, the lifting plate 140 and the mold cart 134 are moved, the mold cart 134 is held at a position facing the storage area 42 in which the target mold 40 is stored, and the mounting device 162 or 164 is moved. The mold 40 is taken out from the storage area 42 and mounted on the rotary table 146. Then, the lifting plate 140 and the mold cart 134 are moved again to hold the mold cart 134 in a position facing the preheating device 46, and the mounted mold 40 is moved by the mounting device 162 or 164. The mold 40 is preheated to a predetermined temperature by sending the mold 40 to the preheating device 46 and causing a temperature control medium to flow therethrough.

Thereafter, the preheated mold 40 is mounted on the rotary table 146 again, and the mold cart 134 is moved to a position facing the injection molding machine 10, 12 or 14 where the mold is to be replaced, where the injection molding Machine 1
The mold (storage mold) 40 removed from the mold 0, 12 or 14 is mounted on the rotary table 146 by the mounting device 162 or 164 that does not mount the replacement mold 40. At this time, when replacing the mold 40 of the injection molding machine 14 located on the same side as the preheating device 46, that is, at the rear, it is necessary to rotate the rotary table 146 by 180 degrees.

Then, with the two molds 40 mounted, the rotary table 146 is rotated 180 degrees, the mounting positions of both molds 40 are switched, and the replacement mold 40 is placed in the injection molding machine 1.
0, 12 or 14 and fixed by the fixing device 212. At the same time, the storage mold 40
The mold cart 134 carrying the mold 40
The mold 40 is moved to a position facing the storage area 42 where it is to be stored, and the mold 40 is stored in the storage area 42. This completes a series of mold exchanges.

Note that the operation for exchanging the molds described above is just an example, and the storage mold 40 is moved to the mold station 3.
After storing the replacement mold 40 in the injection molding machine 1
Of course, it is also possible to exchange the molds using other procedures, such as transporting and mounting the molds to the molds 0, 12, or 14.

As detailed above, according to the injection molding apparatus of this embodiment, the exchange mold 40 can be transported from the mold station 38 to the injection molding machine 10, 12, or 14, and the exchange mold 40 can be transported from the injection molding machine 10, 12, or 14 to The storage mold 40 can be easily and quickly transported to the mold station 38 using a single mold cart 134, which makes it possible to transport the stored mold 40 to the mold station 38 easily and quickly. Full automation is possible and the device can be configured compactly.

Moreover, after the replacement mold 40 taken out from the mold station 38 is preheated at a predetermined temperature in a preheating device 46, the replacement mold 40 is
14 and is installed, so when the resin material is injected into the product cavity in the mold 40, the fluidized resin material is transferred to the mold 40.
There is no risk of product defects (shoots) being caused by cooling due to zero pressure, and excellent molded products can be obtained immediately after the mold is replaced. Therefore, even when molds are frequently replaced in order to produce many types of molded products in small quantities, it is possible to efficiently produce molded products of excellent quality.

In addition, male couplers 66 and 68 are used as coupling means for connecting external piping and a temperature regulating medium passage formed in the mold 40 in order to supply and discharge a temperature regulating medium for preheating the mold 40. Since the female couplers 78 and 82 are employed, it is sufficient to simply bring the two closer to each other and separate them when they are coupled and separated.This makes it possible to automatically control the preheating device 46, and when the two are separated, liquid It has the advantage of almost no leakage.

Furthermore, the injection molding machines 10, 12, and 14 are provided with a fixing device 212, and since it is sufficient to simply drive the cylinder 228 when attaching and detaching the mold 40, automatic control is sufficient for attaching and detaching the mold 40. It is possible.

In addition, in this embodiment, three injection molding machines 10, 12, and 14 are provided in upper and lower two stages, which greatly reduces the installation space of the equipment, and one mold cart 134 can be used to There is an economical effect of replacing the molds of the three injection molding machines 10, 12 and 14.

Although one embodiment of the present invention has been described above in detail based on the drawings, the present invention can also be implemented in other embodiments.

For example, in the above embodiment, a preheating device 46 for preheating the mold 40 is disposed in the mold station 38;
It is also possible to install the preheating device 46 in other locations, and there is no need to provide this preheating device 46, especially when the resin material to be injected has relatively high fluidity.

Further, in the above embodiment, the fixed plate 52 of the preheating device 46 is fixed in position, but the mold 4
It can also be configured so that its position can be changed depending on the size of 0 or the like.

Furthermore, in the above embodiment, three injection molding machines 1
0, 12 and 14 are provided, but their arrangement form can be changed in various ways, and
The present invention can be similarly applied to apparatuses equipped with one, two, or four or more injection molding machines.

Furthermore, in the above embodiment, the injection molding machine 10,
12 and 14 are respectively provided with fixing devices 212 so that the mold 40 can be automatically attached and detached, but the mold 40 may also be attached using bolts or the like. Similarly, mold 40
Although male couplers 66, 68 and female couplers 78, 82 are used as coupling means for connecting the internal temperature regulating medium passage and the external piping, other coupling means may also be used.

In addition, in the above embodiment, a ball screw is used as the mold moving means 170 for moving the mold locking mechanism 168 and as a means for moving the mold cart 134, but a cylinder or a motor is used. Other drive means can also be employed, such as using a chain.

In addition, it goes without saying that the present invention can be implemented in various modifications and improvements based on the knowledge of those skilled in the art without departing from the spirit thereof.

[Brief explanation of drawings]

FIG. 1 is a schematic front view of an embodiment of an apparatus embodying an injection molding system according to the present invention. Second
The figure is a schematic plan view showing the upper part of the device. FIG. 3 is a schematic plan view showing the lower part of the device. FIG. 4 is a plan view showing the main parts of the mold preheating device included in the above apparatus. Fifth
The figure is a partially cutaway front view of the male coupler shown in FIG. 4. FIG. 6 is a partially cutaway front view of the female coupler shown in FIG. 4. FIG. 7 is a partially cutaway front view showing a state in which the male coupler and female coupler are connected. FIG. 8 is an enlarged plan view of the mold truck shown in FIGS. 2 and 3 above. Figure 9 is the 8th
FIG. Figures 10 and 11
The figure is a diagram schematically showing a device for vertically driving an elevating plate on which the mold truck is installed,
They are a longitudinal sectional view and a front view, respectively. FIG. 12 is an enlarged front view of a portion of the injection molding machine shown in FIGS. 1 to 3, to which a mold is attached.
FIG. 13 is a longitudinal sectional view of the fixing device shown in FIG. 12. FIG. 14 is a front view of the fixing device. 10, 12, 14: Injection molding machine, 38: Mold station, 40: Mold, 44, 172, 20
6,220: Roller, 46: Preheating device, 5
8: cylinder (clamping means), {66, 68: male coupler, 78, 82: female coupler} (coupling means), 70, 74: flange, 72: fixed type, 76: movable type, 88, 114: Valve body, {10
2: Inward flange, 118: Head} (protrusion), 1
34: mold trolley, 136: locking claw, 138: locking part, 146: rotary table, 162, 164: mounting device, 166: guide mechanism, 168: mold locking mechanism, 170: mold moving means, 174: Information board,
180: cylinder (operating means), {208: fixed plate, 210: movable plate} (mounting plate), 212: fixing device, 224: fixing member, 228: cylinder.

Claims (1)

[Scope of Claims] 1. An injection molding machine configured to form a predetermined molded product by injecting a fluidized resin material into a product cavity formed in a clamped mold; and the injection molding machine. Take out multiple molds installed on the machine.
a mold station that can be retractably juxtaposed; and a replacement mold that is movably disposed between the injection molding machine and the mold station and that is taken out from the mold station and installed in the injection molding machine. and a storage mold that is removed from the injection molding machine and stored in the mold station. By rotating the table, the mounting positions of the mounted replacement mold and storage mold are exchanged, and by moving the mold cart, the replacement mold is mounted on the injection molding machine, and An injection molding system characterized in that the storage mold is stored in a storage position of the mold station. 2. The mold has a temperature regulating medium passage therein, and the temperature regulating medium passage has a protrusion that is caused to mutually protrude into a predetermined temperature regulating medium supply side by a male and female fitting operation. a first coupler member and a second coupler member each having a male-female fitting structure, each having a protrusion on one side to move the other valve body from a temperature-regulating medium flow blocking position to an allowable position. The injection molding system according to claim 1, wherein the injection molding system is coupled through a coupling means consisting of. 3. The rotary table of the mold truck locks and releases the guide mechanism that guides the predetermined mold to its mounting position, a locking claw that is locked to a locking portion of the mold, and the locking claw. A mold locking mechanism including an operating means for activating the mold, and a mold locking mechanism that is moved toward and away from the injection molding machine and the mold station to lock the molds locked by the locking claws therein. 3. The injection molding system according to claim 1, further comprising a mold moving means configured to feed or take out the mold. 4. The injection molding machine is installed at its mold installation location,
Claims 1 to 3 have a guide roller for guiding the mold, and a fixing member that is protruded by a cylinder and clamps and fixes the flange portion of the mold between it and the mounting board. The injection molding system according to any of Item 3. 5. Any one of claims 1 to 4, wherein a plurality of the injection molding machines are installed, and the mold is moved between the injection molding machines and the mold station by the mold cart. The injection molding system described in the above. 6. An injection molding machine that injects a fluidized resin material into a product cavity formed in a clamped mold to form a predetermined molded product, and a plurality of molded parts installed in the injection molding machine. Remove the mold and
a mold station that can be arranged side by side so as to be retractable; a mold preheating device that preheats the mold taken out from the mold station to a predetermined temperature; the injection molding machine, the mold station, and the mold preheating device. a replacement mold that is movably arranged between the mold station and the injection molding machine after being taken out from the mold station and preheated in the mold preheating device; and the injection molding machine. and a storage mold that is removed from the mold station and stored in the mold station. Then, the mounting positions of the mounted replacement mold and the storage mold are exchanged, and the replacement mold is mounted on the injection molding machine by moving the mold cart, and the storage mold is mounted on the injection molding machine. An injection molding system characterized in that the injection molding system is stored in a storage position of the mold station. 7. The injection molding system according to claim 6, wherein the mold preheating device is arranged at a predetermined position of the mold station. 8. The mold has a temperature regulating medium passage therein, and a protrusion through which the temperature regulating medium passage is mutually protruded into a predetermined temperature regulating medium supply side by a male and female fitting operation. a first coupler member and a second coupler member each having a male-female fitting structure, each having a protrusion on one side to move the other valve body from a temperature-regulating medium flow blocking position to an allowable position. The injection molding system according to claim 6 or 7, wherein the injection molding system is coupled through a coupling means consisting of. 9. Claim 9, wherein the mold preheating device includes clamping means for clamping the mold in the male-female fitting direction of the coupling means provided between the mold and the temperature control medium supply side. Injection molding system according to item 8.