JP2002225065A - Molding and assembly equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a molding and assembling apparatus in which there is no useless good molded article. A rotary table unit (5) for alternately transferring two molds (2, 3) for molding molded articles of different shapes to an injection station and a molded article removal station, a mold clamping unit, an injection unit (7), and a mold. Opening / closing unit 8
A defective product determining means for determining whether or not an injection molded product is defective, and a mold for molding the defective product to form a non-defective product. Non-defective product return determining means for determining whether or not a defective product has been determined. If the defective product determination means determines that the product is defective, the molded product removal means 9 takes out the defective molded product from the molds 2 and 3 and returns the defective product. While the sheet is conveyed to the molded article discharge location, the mold opening operation of the other molds 2 and 3 is performed until the mold return determining unit determines that the molds 2 and 3 that molded the defective article have molded the non-defective article. Control is performed so that the removal operation and the injection operation of the molded product are stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding and assembling apparatus for molding a plurality of molded articles having different shapes and assembling these molded articles.

[0002]

2. Description of the Related Art As a conventional molding and assembling apparatus of this kind, a single mold having a plurality of molding cavities is formed, and two or more molded articles having different shapes are formed from the single mold. There has been proposed a method of assembling these molded products. In addition, as a system for assembling a molded product, it has a plurality of molding machines having a mold in which a single molding cavity is formed, and two or more molded products having different shapes molded from each molding machine. There is something to assemble.

[0003]

However, in the former molding and assembling apparatus, the cost of the mold is high because the shape of the mold is complicated and the cost of the mold is high. In addition, since the mold has a plurality of molding cavities, the flow of the molding material (for example, molten resin) is complicated, and the gate balance is deteriorated. Then, if molding failure occurs even in one of the molded articles to be assembled parts, the assembly set cannot be assembled. As a result, good molded products are wasted, which also increases the product cost.

Further, in the latter system, a molded product is separately molded by a plurality of molding machines, and is transported to an assembling machine for assembling, so that the lead time is long. In addition, since there are a plurality of molding machines, this increases the product cost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a molding and assembling apparatus which can reduce product cost and lead time, and can eliminate useless good molded products. With the goal.

[0006]

According to a first aspect of the present invention, there is provided a mold moving table for supporting at least one set of a plurality of molds each for molding a molded article having a different shape, and moving the mold moving table. Mold moving means for alternately transferring each of the molds to an injection station and a molded product taking-out station, mold clamping means for clamping the mold located at the injection station, and a mold with the mold clamping means. Injection means for injecting a molding material into the molding cavity of the clamped mold, mold opening / closing means for opening the mold located at the molded product take-out station, and mold opening / closing means by the mold opening / closing means. Remove the molded product from the mold
A molding and assembling apparatus comprising: molded article taking-out means for conveying a molded article taken out; and molded article assembling means for assembling molded articles conveyed by the molded article taking out means. A defective product judging means for judging whether or not the molded product is defective, and a non-defective molding return judging means for judging whether or not the mold for molding the defective product has formed a non-defective product; If the non-defective product determination means determines that the product is defective, the molded product removal means removes the defective molded product from the mold, transports the defective molded product to a defective molded product discharge location, and determines that the non-defective product return determination means is defective. Until it is determined that the mold that has formed a non-defective product has formed a non-defective product, the opening operation of the other mold of the same set, the removal operation of the molded product, and the injection operation are stopped. Characteristic To.

Although this molding and assembling apparatus has a plurality of dies, the apparatus as a whole needs only a single structure such as a mold clamping means and an injection means, and each mold has a single molding cavity. Then, the shape of the mold is simplified, and each mold is alternately shifted to the injection station and the molded product removal station, and the injection process and the molded product removal process are performed at the same time. The molded product is immediately assembled by the attached molded product assembling means. In addition, if a certain mold causes molding failure, the other molds in the same set stop processing such as molding until the mold with molding failure forms a non-defective product. Do not mold.

According to a second aspect of the present invention, there is provided the molding and assembling apparatus according to the first aspect, wherein the non-defective molding return determining means is in a state of waiting for the molded article assembling means to convey a molded article of the same type as the defective article. A molded article transfer state detecting means for detecting whether or not the molded article is present in the mold, and a molded article presence / absence detecting means for detecting whether or not a molded article is present in the mold. The detection means determines by changing from the conveyance prohibited state to the conveyance waiting state, and at the injection station, the mold has formed a non-defective product by the molded article presence / absence detection means changing from the absence of molded article state to the presence of molded article state. Is determined.

In this molding and assembling apparatus, in addition to the operation of the first aspect of the present invention, the molded product take-out station checks the state of the molded product assembling means to determine whether or not the mold that has molded the defective product has molded a good product. At the injection station, the inside of the mold is checked and detected.

According to a third aspect of the present invention, in the molding and assembling apparatus according to the first aspect, the mold moving table is a rotary table that is driven to rotate, and a plurality of the molds are arranged along the periphery of the rotary table. Is supported.

In this molding and assembling apparatus, in addition to the function of the first aspect of the present invention, the mold clamping means, the injection means, the mold opening and closing means, the molded product taking out means and the molded product assembling means can be arranged around the rotary table. Thus, the entire apparatus can be made compact.

According to a fourth aspect of the present invention, there is provided the molding and assembling apparatus according to the third aspect, wherein the two dies for forming the different-shaped molded product are one set, and the two dies are the rotary mold. The table is supported at a 180-degree facing position of the table, and an injection station and a molded article taking-out station are arranged at the 180-degree facing position.

In this forming and assembling apparatus, the effects of the first to third aspects of the present invention can be obtained for a forming and assembling apparatus that forms two differently shaped molded articles and assembles them to produce an assembled article.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

1 to 10 show an embodiment of the present invention. FIG. 1 is a perspective view of a molding and assembling apparatus, FIG. 2 is a side view of the molding and assembling apparatus, and FIG. FIG. 4 is a perspective view of a mold opening / closing unit, FIG. 6 is a perspective view of an extrusion unit, FIG. 7 is a perspective view of a molded product assembly unit, and FIG. 8 is a schematic circuit block diagram of the molding and assembling apparatus, FIG. 9 is a flowchart of the first half of the operation of the molding and assembling apparatus (extraction molding processing), and FIG. 10 is a flowchart of the latter half of the operation of the molding and assembling apparatus (extraction molding processing).

As shown in FIGS. 1 and 2, the molding and assembling apparatus 1 has a rotary table 4 as a mold moving table for supporting two dies 2 and 3, respectively. A rotary table unit 5 as a mold moving means for shifting the position of each of the molds 2 and 3; a mold clamping unit 6 as a mold clamping means for clamping each of the molds 2 and 3 located at the injection station; This mold clamping unit 6
An injection unit 7 as an injection means for injecting a molding material (molten resin) into a molding cavity (not shown) of each of the dies 2 and 3 clamped by the above, and each of the dies 2 and 3 located at a molded product take-out station. Mold opening / closing unit 8 as mold opening / closing means for opening the mold, and molded products (connector main body 11 and spacer 12 shown in FIG. 3) from molds 2 and 3 opened by the mold opening / closing unit 8, and FIG. 3, a molded product taking-out means 9 for taking out the runner 13 shown in FIG. 3, and carrying out the taken-out molded products 11, 12 and a molded product assembly for assembling the molded products 11, 12 carried by the molded product taking-out means 9 with each other. And a molded product assembling unit 10 as means.

The two dies 2 and 3 have different molding cavities, respectively, and in this embodiment, one mold 2 is used to mold the connector body 11 (the A is omitted in the flowcharts of FIGS. 9 and 10). ), And the other is a mold 3 for molding the spacer 12 (omitted in the flowcharts of FIGS. 9 and 10 as a mold B). Then, an assembled product is manufactured by assembling the connector body 11 and the spacer 12 which are molded products from both the dies 2 and 3 as described later. Make up one set. The spacer 12 is for double-locking a terminal (not shown) to the connector body 11.

As shown in FIG. 3, each of the molds 2 and 3 has a lower mold 14 and an upper mold 15, and the upper mold has an injection port 16 therein.
Is provided. The lower mold 14 and the upper mold 15 have detachable cassette molds 17, 18, respectively. A concave portion (not shown) having a desired shape is formed on a joint surface between the upper and lower cassette molds 17 and 18.
By setting the joint 18 to a joining state, a molding cavity having a desired shape is formed. That is, the molded product can be freely changed by exchanging the upper and lower cassette dies 17, 18.

When a molded product is molded in the molding cavity, a runner 13 is formed together with a resin introduction path (not shown) of a molding material (resin), and a resin for detecting a resin pressure in the resin introduction path is formed. A pressure sensor 19 is provided.
The detection output of the resin pressure sensor 19 is applied to the control unit 2 shown in FIG.
0 is output.

Further, as shown in FIG.
Is provided with an upper / lower limit position / time detecting means 50 for detecting an upper / lower limit position and an injection time at the time of injection molding. A detection output of the upper / lower limit position / time detecting means 50 is output to the control unit 20. It is supposed to be. The control unit 20 determines whether or not the molded product is defective based on the detection results of the injection upper and lower limit position / time detecting means 50 and the injection pressure sensor 19. The time detecting means 50 and the control unit 20 constitute a defective product judging means 51. That is, it is possible to determine whether or not there is a short shot from the resin pressure of the resin pressure sensor 19, whether or not the air in the molding cavity is leaked, and whether or not the resin is completely filled in the molding cavity. Can determine whether or not a proper resin molded product is molded from these detection results.

Each of the dies 2 and 3 has a molded article detection means 2 for detecting whether or not there is a molded article in the molding cavity.
The detection output of the molded article presence / absence detection means 21 is output to the control unit 20. Furthermore, lower mold 1
A cooling water pipe 22 is led to the upper mold 4 and the upper mold 15, and the cooling water pipe 22 is used for cooling during injection molding.

As shown in FIGS. 1 and 2, the rotary table unit 5 drives the rotary table 4 to rotate about the center position of the rotary table 4. The two molds 2 and 3 constituting one set are on the periphery of the turntable 4 and
The rotary table 4 is disposed at a 180 ° facing position, and the 180 ° facing position of the rotary table 4 is an injection station and a molded product take-out station. That is, one mold 2
When the (or the other mold 3) is located at the injection station, the other mold 3 (or the one mold 2) has a positional relationship such that it is located at the molded product removal station. Further, the rotary table 4 is provided with a not-shown mold lock section for locking the lower mold 14 of each of the molds 2 and 3, and when the lock of the mold lock section is released, each mold 2 is unlocked. , 3
Is simply placed on the turntable 4 and can be lifted. Further, a pressing elevating plate entrance hole 23 is formed below the rotary table 4 where the two dies 2 and 3 are arranged.

As shown in FIG. 4, the mold clamping unit 6
A fixed plate 25 fixed to the apparatus main body 24 at a position above the injection station of the rotary table 4 and a pressing elevating plate 26 disposed at a position below the injection station of the rotary table 4 and below the fixed plate 25. The pressing and lifting plate 26 has a plunger pump 27
Move between the lower standby position and the upper pressing position (FIG. 2,
(Direction of arrow A in FIG. 4). In the lower standby position, it is located below the rotary table 4, and in the upper pressing position, it protrudes upward from the pressing elevating plate entrance hole 23 of the rotary table 4, and lifts the dies 2, 3. Press against the fixing plate 25. By this pressing force, each mold 2, 3
In a mold-clamped state. Further, the fixed plate 25 is provided with a nozzle entrance hole 28 of the injection main body 30 described later.

As shown in FIGS. 1 and 2, the injection unit 7 has an injection main body 30 disposed above the injection station of the rotary table 4 and above the fixed plate 25. The injection body 30 is the apparatus body 2
4 is provided so as to be vertically movable (in the direction of arrow B in FIGS. 1 and 2) by a lifting drive unit 31. Injection body 30
An injection nozzle 30a is provided at a lower end of the injection body 30.
Is moved downward, the injection nozzle 30a can be mounted in the injection receiving port 16 of each of the molds 2 and 3 clamped through the nozzle entrance hole 28.

As shown in FIGS. 2 and 5, the mold opening / closing unit 8 is vertically movable with respect to the apparatus main body 24 at a position above the molded product take-out station of the rotary table 4 (FIGS. 1, 2 and 5). 2 in which the lifting plate 32 is provided in the direction indicated by the arrow C in FIG.
And a mold holding portion 34 fixed to the lifting plate 32 and holding the upper mold 15 of each of the molds 2 and 3. Then, when the dies 2 and 3 are located at the molded product take-out station, the mold holding unit 34 is lowered to hold the upper mold 15 and the mold holding unit 34 is raised, thereby making each mold. By opening the molds 2 and 3 and lowering the mold gripping part 34, the upper mold 15 can be returned to the position where it is mounted on the lower mold 14.

The molded product take-out means 9 is arranged near the molded product take-out station on the rotary table 4 and comprises an extruding unit 35 and a molded product / runner take-out unit 36.

As shown in FIG.
Has two push rods 37a and 37b that move up and down (in the direction of arrow D in FIGS. 1, 2, and 6) with respect to the apparatus main body 24 at a position below the molded article station on the turntable 4.
The two push rods 37a and 37b enter the molding cavity and the resin introduction path from the rod entrance holes 23 of the dies 2 and 3 located at the molded product take-out station, and form the molded products 11, 12 and the runner 13. Press upward. The molded products 11, 12 and the runner 13 are extruded from the molding cavity and the resin introduction path by the pushing of the pushing rods 37a, 37b.

As shown in FIGS. 1 and 2, the molded product / runner take-out unit 36 has a molded product take-out portion 38 and a runner take-out portion 39 which are movable independently in the horizontal and vertical directions. The part 38 holds the molded products 11, 12 discharged from the molding cavity by gripping or the like, and holds the retained molded products 11, 12 at a predetermined position of the molded product assembly unit 10 or a defect other than the molded product assembly unit 10. It is transported to the molded product discharge point. More specifically, when the molded product is a non-defective connector body 11, it is transported to the connector setting position of the molding and assembly unit 10, and when the molded product is a non-defective spacer 12, it is conveyed to the spacer setting position of the molding and assembly unit 10, respectively. If the molded articles 11 and 12 are defective, they are transported to a defective molded article discharge location other than the molded article assembly unit 10. The runner take-out portion 39 holds the runner 13 discharged from the resin introduction path by gripping or the like, and discharges the held runner 13 to a runner disposal position.

As shown in FIG. 7, the molded article assembling unit 1
Reference numeral 0 denotes an assembly table 40 which is arranged near the molded product removal station of the rotary table 4 and is fixed to the apparatus main body 24. On this assembly table 40, a component support member 41 for setting the connector body 11 at the set position, a component slide rail member 42 for setting the spacer 12 at the set position, and a component slide rail member 42 Moving in the direction of arrow E in FIG.
A component pressing moving member 43 for moving the component 2 toward the connector body 11 is provided. Then, the component pressing and moving member 4
The spacer 12 is assembled in the connector main body 11 by moving the spacer 12 in the direction approaching the connector main body 11 by the movement of the connector 3. The assembled components are ejected to a predetermined position by a component conveying means (not shown).

The molding and assembling apparatus 10 determines whether the connector main body 11 is located at the set position of the component support member 41, in other words, is in a state of waiting for the transfer of the molded article or in a state of inhibiting the transport of the molded article. A molded product transfer state detecting means 44 shown in FIG. 8 for detecting whether or not this is the case is provided. The molded article transport state detecting means 44 detects whether or not the molded article assembly unit 10 is in a state of waiting for the transport of molded articles 11 and 12 of the same type as the defective article when defective molding has occurred. . That is, at the time of removing the spacer 12 as a molded product at the molded product removal station, the connector main body 11 is set at the set position of the molded product assembly unit 10.
If there is, the state is a conveyance waiting state, and if there is no connector main body 11, it indicates a conveyance prohibition state. When the connector main body 11 is taken out as a molded product at the molded product take-out station, if the connector main body 11 is at the set position of the molded product assembling unit 10, the conveyance is prohibited. Show.

Further, the molded article transfer state detecting means 44
Together with the above-mentioned molded article presence / absence detecting means 21, a non-defective molded article return judging means 45 is constituted. That is, it is possible to determine whether or not the molding of the counterpart molds 2 and 3 was successful at the injection station based on the detection result of the molded article presence / absence detecting means 21. As described above, the molded article transport state detecting means Based on the detection result of 44, it can be determined whether or not the dies 2 and 3 of the other party have succeeded at the molded product removal station.

Next, a control system of the molding and assembling apparatus 1 will be described. As shown in FIG. 8, each detection output of the resin pressure sensor 19, the molded article presence / absence detecting means 21 and the molded article conveyance state detecting means 44 is guided to the control unit 20 as described above. The driving of the rotary table unit 5, the mold clamping unit 6, the injection unit 7, the mold opening / closing unit 8, the extrusion unit 35, the molded product / runner take-out unit 36, and the molded product assembly unit 10 are respectively controlled by the detection output of.

The ROM 46 stores a program for executing the flowchart of the ejection molding process shown in FIGS. 9 and 10, and when the ejection molding operation is selected, the control unit 20 executes the program to execute this program. Each of the units 5, 6, 7, 8, 35, 36, 10 is controlled. The details of this control will be described later.

Next, the operation of the molding and assembling apparatus 1 will be described with reference to FIGS. As shown in FIG. 9, for example,
When the mold 3 which is one mold is sent to the injection station, the mold 2 which is the other mold is sent to the molded product take-out station, and each processing is performed at each station at the same time. In the molded product take-out station, it is checked whether or not there is a molded product in the mold 2 based on the output of the molded product presence / absence detecting means 21 (step S1). No processing is done without the molded article. If there is a molded product in the mold 2 and this molded product is determined to be a non-defective product in step S23 (step S2), it is determined whether there is no connector body 11 at the set position of the molded product assembly unit 10. A check is made based on the output of the article transport state detecting means 44 (step S3). If there is no connector body 11 in the molded article assembly unit 10, the molded article is taken out of the mold 2, and the taken out connector body 11 is transported to the set position of the connector body 11 of the molded article assembly unit 10 (steps S4, S5). That is, the mold 2 is opened by the mold opening / closing unit 8, the molded product 11 and the runner 13 are extruded by the pushing rods 37a and 37b, and the extruded molded product body 11 and the runner 13 are extracted by the molded product / runner take-out unit 36. Transport. The molded connector body 11
Since the and the runner 13 are cut when the mold is opened, they can be transported to different locations.

The connector body 1 is attached to the molded product assembly unit 10.
If there is one, the process at the molded product take-out station is completed while leaving the molded product in the mold 2. If there is a molded product in the mold 2 and the molded product is determined to be defective in step S23 (step S2), the molded product is taken out of the mold 2 and the taken out connector body 11 is formed. The product is transported to a defective molded product discharge location other than the product assembly unit 10 (steps S6 and S7). That is, the mold opening / closing unit 8
The molded product 11 and the runner 13 are extruded with the pushing rods 37a and 37b, and the extruded molded product body 11 and the runner 13 are transported to the respective disposal positions by the molded product / runner take-out unit 36. .

On the other hand, at the injection station, it is checked from the output of the molded article presence / absence detecting means 21 whether there is a molded article in the mold 3 (step S8), and if there is a molded article, no processing is performed. . If there is a molded product, an injection molding process is performed (step S9). That is, the lock of the mold 3 on the rotary table 4 is released, the press-up / down plate 26 of the mold clamping unit 6 is driven upward to clamp the mold 3, and the injection body 30 of the injection unit 7 is lowered to lower the mold. The mold 3 is filled with resin. After the resin is filled, the gate is sealed, the resin pressure is detected by the resin pressure sensor 19, and the upper and lower limit position and time of the injection are detected by the upper and lower limit position / time detecting means 50 through the resin filling process (step S9). Then, based on the detected resin pressure, the upper and lower limits of the injection, and the upper and lower limits of the injection, it is determined whether or not the molded spacer 12 is defective (Step S10), and the result is held (Steps S11 and S12).

When the injection is completed, the injection unit 7
The injection body 30 is raised, and the press up / down plate 26 of the mold clamping unit 6 is lowered to place the mold 3 on the rotary table 4. The placed mold 3 is placed on the rotary table 4 by the mold lock unit. Lock again. As described above, when the processing at the molded product taking-out station and the injection station is completed, the rotary table 4 is rotated by 180 degrees by the rotary table unit 5 (step S13), and the mold 3 is moved to the molded product taking-out station and the A mold 2 is moved to the injection station. Respectively. When the mold 3 has been subjected to the injection processing at the injection station, the mold 3 is cooled during this transfer process and the molding material is solidified. Further, after the mold clamping by the mold clamping unit 6 is released, the mold is clamped between the upper mold 15 and the lower mold 14 only by the weight of the upper mold 15.

As shown in FIG. 10, the rotation of the rotary table 4 causes the mold 3 to be sent to the molded product take-out station and the mold 2 to be sent to the injection station.
A process substantially similar to that described above is performed at each station at the same time. However, at the molded product removal station of the mold 3, there is a molded product in the mold 3, and this molded product is
If it is determined as a non-defective product in step 10 (step S1
5) It is checked whether or not the connector main body 11 is at the set position of the molded article assembly unit 10 from the output of the molded article transport state detecting means 44 (step S16). If the connector body 11 is present in the molded product assembly unit 10, the molded product is removed from the mold 3, and the removed spacer 12 is transported to the set position of the spacer 12 of the molded product assembly unit 10 (steps S17, S18). Subsequent processing is the same. In the molded product assembly unit 10, the connector body 1
When the spacer 1 and the spacer 12 are set at predetermined positions, assembly is performed. The assembled product is discharged from the molded product assembly unit 10.

Next, the above operation will be described with reference to a specific example. Now, in the molded product assembly unit 10, only the molded connector body 11 has been conveyed to the set position.
In the state where no molded product exists in the two molds 2 and 3, the mold 2 for molding the connector body 11 is located at a molded product removal station, and the mold 3 for molding the spacer 12 is located at an injection station. It shall be sent to.

In this state, as shown in FIG.
Is checked whether there is a molded product in the mold 2 (step S1). In this case, since there is no molded product, no processing is performed irrespective of the determination result (the output result of the resin pressure sensor and the like) of step S23 and the output of the molded product transport state detecting means 44. At the injection station, it is checked whether or not there is a molded product in the mold 3 based on the output of the molded product presence / absence detecting means 21 (step S8). In this case, since there is no molded product, injection molding processing of the spacer 12 is performed by the mold 3 (step S9). That is, the lock of the mold 3 on the rotary table 4 is released, the mold clamping unit 6 is driven to clamp the mold 3, and the injection unit 7 is lowered to fill the B mold 3 with resin. After resin filling, gate sealing is performed, resin pressure is detected by a resin pressure sensor 19, and injection upper and lower limit positions and
The injection upper / lower limit position and time are detected by the time detecting means 50 (step S9). Then, based on the detected resin pressure, the upper and lower limits of the injection, and the upper and lower limits of the injection, it is determined whether or not the molded spacer 12 is defective (Step S10), and the result is held (Steps S11 and S12). Here, it is assumed that it is determined to be non-defective. When the processing at the molded product removal station and the injection station is completed, the turntable 4 is rotated by 180 degrees (step S13), and the mold 3 is positioned at the molded product removal station and the mold 2 is positioned at the injection station.

As shown in FIG. 10, at the molded product take-out station, it is checked whether or not there is a molded product in the mold 3 (step S14). In this case, there is a molded product, and since the molded product was determined to be good in step S10,
It is checked whether or not the connector body 11 is present in the molding assembly unit 10 (step S16). In this case, since it is determined that the connector body 11 is present, the molded product is removed from the mold 3 and the removed spacer 12 is transported to the set position of the spacer 12 of the molded product assembly unit 10 (steps S17 and S18). That is, the mold 3 is opened by the mold opening / closing unit 8, the molded product 12 and the runner 13 are extruded by the pushing rods 37a and 37b, and the extruded spacers 12 and the runner 13 are conveyed by the molded product / runner removal unit 36. I do. Since the spacer 12 and the runner 13 of the molded product are cut when the mold is opened, they can be transported to different locations. Since the connector main body 11 and the spacer 12 are set at predetermined positions in the molded product assembling unit 10, assembly is performed. The assembled product is discharged from the molded product assembly unit 10. As a result of this assembly discharge processing, neither the connector main body 11 nor the spacer 12 is present at the set position of the molded product assembly unit 10.

On the other hand, in the injection station, it is checked whether or not there is a molded article in the mold 2 based on the output of the molded article presence / absence detecting means 21 (step S21). In this case, since there is no molded product, the injection molding process of the connector main body 11 is performed by the mold 2 (step S22). That is,
The mold 2 on the rotary table 4 is unlocked, the mold clamping unit 6 is driven to clamp the mold 2, and the injection unit 7
And the mold 2 is filled with resin. After resin filling, gate sealing is performed, resin pressure is detected by a resin pressure sensor 19, and injection upper and lower limit positions and
The upper and lower limits of the injection and the time are detected by the time detecting means 50 (step S22). And the detected resin pressure,
It is determined from the injection upper and lower limit position and the injection upper and lower limit time whether or not the molded product spacer 12 is defective (step S23).
The result is held (steps S24, S25). Here, it is assumed that it is determined to be a good product. When the processing at the molded product take-out station and the injection station is completed, the turntable 4 is rotated by 180 degrees (step S26), and the mold 2 is positioned at the molded product take-out station and the mold 3 is positioned at the injection station. If both the molded products in the mold 2 and the mold 3 are non-defective, the above-described operations are sequentially repeated.

As described above, the molding and assembling apparatus 1 of the present invention
However, as a whole, the mold clamping unit 6 and the injection unit 7 need only have a single configuration, and each mold 2, 3 has a single molding cavity. In addition to simplifying the shape of the mold, each mold 2, 3
Are alternately shifted to the injection station and the molded product take-out station, and the injection process and the molded product take-out process are performed at the same time, and the molded product 1 taken out by the molded product take-out process
1 and 12 are immediately assembled in the attached molded article assembling unit 10. Therefore, it is possible to reduce the product cost and the lead time.

If it is determined in step S10 that the spacer 12, which is a molded product of the mold 3, is defective in the above-described operation process, the mold 3 is located at the molded product take-out station. Such processing is performed. That is,
Since the spacer 12 which is a molded product in the mold 3 is defective, “NO” is determined in the step S15. And
The molded product is taken out from the mold 3 and the spacer 12 taken out is taken out.
Is transported to a defective molded product discharge location other than the molded product assembly unit 10 (steps S19 and S20). That is, the mold 3 is opened by the mold opening / closing unit 8, and the push rods 37a,
The molded product 12 and the runner 13 are extruded at 37b, and the extruded spacers 12 and the runner 13 which are the extruded molded products are transported to their respective disposal positions by the molded product / runner take-out unit 36. Here, since the spacer 12 is not conveyed to the molded product assembly unit 10, the assembling operation is not performed, and the connector main body 11 remains at the connector main body set position of the molded product assembly unit 10.

On the other hand, in the injection station, the injection molding operation of the mold 2 is performed as usual (steps S21 and S21).
22, S23). When the operation in each station is completed, the rotary table 4 is rotated by 180 degrees, and the mold 3 is sent to the injection station, and the mold 2 is sent to the molded product take-out station.

In the injection station, the defective product in the mold 3 is discarded, and since there is no molded product in the mold 3, the injection forming operation of the mold 3 is performed as usual (Steps S8 and S8).
9, S10). However, the connector body 1 is located at the set position of the molded product assembly unit 10 at the molded product removal station.
Since 1 remains, the check as to whether or not the connector main body 11 is present in the molded article assembly unit 10 is “NO” (step S3), and the mold 2 is not opened and the molded article is not taken out. . When the operation at each station is completed, the turntable 4 rotates 180 degrees (step S).
13), the mold 2 is sent to the injection station, and the mold 3 is sent to the molded product removal station.

At the injection station, since the molded product remains in the mold 2, the check as to whether there is a molded product in the mold 2 is “NO” (step S 21). Is not done. Then, when the connector body 11 at the set position of the molding assembly unit 10 is no longer assembled, that is, when the connector body 11 as a molded product in the mold 2 is no longer assembled, the molding of the spacer 12 of the counterpart mold 3 is successful. Then, the spacers 12 are conveyed to the molding and assembling unit 10 so that they are taken out at the molding / removing station only after they are assembled.

When it is determined in step S23 that the connector main body 11, which is a molded product of the mold 2, is defective, the same processing as when the spacer 12, which is a molded product of the mold 3, is determined to be defective. Is done. That is, when the connector body 11 is set at the set position of the molding assembly unit 10, that is, when the connector body 11 of the counterpart mold 2 is successfully formed, the spacer 12, which is a molded product in the mold 3, succeeds. Only when the main body 11 is transported to the set position of the molding assembly unit 10 is it removed at the molding removal station.

As described above, in the above-described embodiment, when a certain mold 2 or 3 causes molding failure, the same set of molds 2 (or mold 3) until the defective mold 2 (or mold 3) molds a non-defective product. Since the other mold 3 (or one mold 2) stops processing such as molding and does not mold an excessive number of molded articles, there is no useless good molded article. Avoiding useless good products leads to a reduction in product costs.

In the above-described embodiment, the non-defective molded product return judging means 45 detects whether or not the molded product assembly unit 10 is in a state of waiting for the conveyance of the same type of molded product as the defective product. 44, and a molded article presence / absence detecting means 21 for detecting whether or not a molded article is present in each of the molds 2 and 3. In the molded article take-out station, the molded article conveyance state detecting means 44 conveys the molded article from the conveyance prohibited state. In the injection station, the determination is made by changing to the waiting state, and in the injection station, the molded article presence / absence detecting means 21 is changed from the absence of molded article to the presence of molded article so as to determine that the molds 2 and 3 have molded non-defective articles. In order to determine whether or not each of the molds 2 and 3 that have formed a defective product has formed a good product, the state of the molded product assembling means is checked at the molded product take-out station. H To detect each click,
It is possible to reliably determine whether or not a good product is formed.
Incidentally, the non-defective product return judging means 45 may be shared by the defective article judging means 51 of both the dies 2 and 3. In other words, the return determination can be made when it is determined that the other molds 2, 3 have formed good products after defective products.

Further, in the above embodiment, the mold moving table is the rotary table 4 that is driven to rotate, and the two molds 2 and 3 are supported along the periphery of the rotary table 4, respectively. Tightening unit 6 and injection unit 7
, Mold opening / closing unit 8, extrusion unit 35, molded product / runner take-out unit 36, and molded product assembly unit 1
0 can be arranged around the rotary table 4, so that the molding and assembling apparatus 1 can be made compact.

According to the above-described embodiment, the assembled product is manufactured by assembling the connector body 11 and the spacer 12, which are molded products from both the dies 2 and 3, so that the two molds are manufactured. One set is constituted by the molds 2 and 3, and only one set of the molds 2 and 3 is set on the turntable 4. However, a plurality of sets of molds may be set.
Also, it goes without saying that the molded product may be other than the connector body 11 and the spacer 12. Further, it is needless to say that the present invention can be applied to a case where one set is composed of not less than two molds but three or more molds. In this case, if a defective product is formed by one of the dies, the processing of the other two dies is stopped until the dies form a non-defective product.

According to the above-described embodiment, the defective product judging means 51 for judging whether or not the molding of the dies 2 and 3 has succeeded is controlled by the resin pressure sensor 19 and the injection upper / lower limit position / time detecting means 50. The control unit 20 is configured by the resin pressure sensor 19 and the resin pressure detected by the injection upper / lower limit position / time detecting means 50, the injection upper / lower limit position, and the injection upper / lower limit time. May be determined only by the resin pressure, or may be determined in consideration of factors more than the above-described determination factors.

[0054]

As described above, according to the first aspect of the present invention, a defective product judging means for judging whether or not a molded product injected at an injection station is defective is formed. A non-defective product return determining means for determining whether or not the mold has formed a non-defective product, and when the defective product determining means determines that the molded product is defective, the molded product taking out means removes the defective molded product to the mold. The mold is taken out of the mold, transported to the defective molded product discharge location, and the mold opening of another mold of the same set is performed until the non-defective molding return determination means determines that the mold that molded the defective product has molded a non-defective product. Since the operation and the taking-out operation of the molded product and the injection operation are controlled so as to be stopped, the apparatus has a plurality of dies, but the mold clamping means and the injection means are only required to have a single configuration as the whole apparatus, and The mold has a single molding cavity In addition, the shape of the mold is simplified, and each mold is alternately shifted to the injection station and the molded product take-out station, and the injection process and the molded product removal process are performed at the same time. The molded product can be immediately assembled by the attached molded product assembling means. In addition, if a certain mold causes molding failure, the other molds in the same set stop processing such as molding until the mold with molding failure forms a non-defective product. , The product cost and the lead time can be reduced, and there is no useless good molded product.

According to the second aspect of the present invention, it is checked whether or not the mold that has formed a defective product has formed a good product. Is checked and each is detected, so that it can be reliably determined whether or not a good product is formed.

According to the third aspect of the present invention, since the mold clamping means, the injection means, the mold opening / closing means, the molded article taking out means and the molded article assembling means can be arranged around the rotary table, the molding and assembling apparatus can be made compact. Can be configured.

According to the fourth aspect of the present invention, the two dies for forming the molded articles having different shapes are supported at the 180-degree opposed positions of the rotary table, respectively. Are arranged, so that two differently shaped molded products are formed, and these are assembled to form an assembled product.
The effect of the invention of claim 3 is obtained.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention and is a schematic perspective view of a molding and assembling apparatus.

FIG. 2 shows an embodiment of the present invention and is a side view of a molding and assembling apparatus.

FIG. 3 shows one embodiment of the present invention, and is a perspective view of a mold with a lower mold and an upper mold opened.

FIG. 4 is a perspective view of a mold clamping unit according to the embodiment of the present invention.

FIG. 5 is a perspective view of a mold opening / closing unit according to the embodiment of the present invention.

FIG. 6 is a perspective view of an extrusion unit according to the embodiment of the present invention.

FIG. 7 is a perspective view of a molded article assembling unit according to the embodiment of the present invention.

FIG. 8 is a schematic circuit block diagram of a molding and assembling apparatus according to an embodiment of the present invention.

FIG. 9 is a flowchart of the first half of the operation of the forming and assembling apparatus (the take-out forming process) according to the embodiment of the present invention.

FIG. 10 is a flowchart showing the second half of the operation of the forming and assembling apparatus (removal forming process) according to the embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Molding assembly apparatus 2 Die 3 Die 4 Rotary table (Die moving table) 5 Rotary table unit (Die moving means) 6 Die clamping unit (Die clamping means) 7 Injection unit (Injection means) 8 Die opening / closing unit (Mold opening / closing means) 9 Mold take-out means 10 Mold assembly unit (mold assembly means) 11 Connector body (mold) 12 Spacer (mold) 13 Runner 19 Resin pressure sensor 20 Control unit 21 Mold existence detection means (Non-defective molding return determination means) 26 Pressing elevating plate 30 Injection main body 30a Nozzle 34 Die gripping part 35 Extrusion unit (molded product removal means) 36 Molded / runner removal unit (molded product removal means) 37a, 37b Extruded rod 38 Mold removal section 39 Runner removal section 44 Mold transport state detection means ) 45 good molding return means 50 injection on the lower limit position and time detecting means 51 defective discriminating means

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroyuki Katayama 206-1 Nunobikihara, Haibara-cho, Haibara-gun, Shizuoka Prefecture Inside Yazaki Parts Co., Ltd. F-term (Reference) 4F206 AP19 AP20 AR20 JA07 JC02 JL02 JP01 JP14 JP17

Claims (4)

[Claims] 1. A mold moving table for supporting at least one set of a plurality of molds each for molding a molded article having a different shape, and moving each of the molds with an injection station by moving the mold moving table. A mold moving means for alternately shifting to an article take-out station, a mold clamping means for clamping the mold located at the injection station, and a molding cavity of the mold clamped by the mold clamping means. Injecting means for injecting a molding material, mold opening / closing means for opening the mold located at the molded article take-out station, and a molded article taken out from the mold opened by the mold opening / closing means and taken out. A molding and assembling apparatus comprising: a molded article taking out means for conveying a molded article; and a molded article assembling means for assembling molded articles conveyed by the molded article taking out means. A defective product determining means for determining whether or not the molded product injected at the injection station is defective; and a non-defective product return for determining whether or not the mold which has formed the defective product has formed a non-defective product. Having a determination means, and when the defective product determination means determines that the product is defective, the molded product removal means removes the defective molded product from the mold, and transports the defective molded product to a defective molded product discharge location. Until the non-defective product return determining means determines that the mold that has formed a defective product has formed a non-defective product, the mold opening operation of another die of the same set, the removal operation of the molded product, and the injection operation are stopped. A molding and assembling apparatus characterized in that the molding and assembling apparatus can be freely controlled. 2. A molding and assembling apparatus according to claim 1, wherein said non-defective molding return determining means detects whether or not said molded article assembling means is in a state of waiting for the transport of a molded article of the same type as the defective article. Molded article transport state detecting means, and having a molded article presence / absence detecting means for detecting whether there is a molded article in the mold,
In the molded article take-out station, the molded article transfer state detecting means changes from the transfer prohibited state to the transfer waiting state, and at the injection station, the molded article presence detecting means changes from the absence of molded article state to the presence state of the molded article. A molding and assembling apparatus, wherein it is determined that the mold has formed a non-defective product. 3. The molding and assembling apparatus according to claim 1, wherein the mold moving table is a rotary table driven to rotate, and a plurality of the molds are supported along a peripheral edge of the rotary table. A molding and assembling apparatus. 4. The molding and assembling apparatus according to claim 3, wherein the two dies for forming the molded article having different shapes are one set, and the two dies are opposed to the rotary table by 180 degrees. A molding and assembling apparatus, wherein an injection station and a molded article take-out station are disposed at 180 ° opposed positions.