JP2015199233A - multi-stage injection molding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-stage injection molding machine which allows easy application of a grease to a resin molding after molding and easy assembly and printing of the resin molding after molding.SOLUTION: A multi-stage injection molding machine 1 composed of a plurality of mold tools 10, 12 and 14 which are connected in the clamping and opening direction includes grease application means 50 of applying a grease to a resin molding 100 after molding, assembly means 30 of making the resin molding 100 applied with the grease in an assembled state and tampon printing means 60 and 62 of subjecting the assembled resin moldings 110 and 120 to tampon printing.

Description

  The present invention relates to a multi-stage injection molding machine, and more particularly, to a multi-stage injection molding machine in which a plurality of molding dies are connected in the direction of mold clamping opening.

  Conventionally, a technique for molding various resin molded products by injection of molten resin by an injection unit is already known. Here, the following Patent Document 1 discloses a multi-stage injection molding machine in which a plurality of molding dies are connected in the mold clamping mold opening direction. Thereby, many types of resin molded products can be molded with a small clamping force. That is, it is possible to provide an injection molding machine suitable for resin molded products that are produced only in a small amount even in a wide variety.

  As prior art document information related to the invention of this application, for example, Patent Document 1 is known.

JP 2002-178194 A

  However, when the above-described multi-stage injection molding machine is used to form a holder, a small knob, and a large knob (three types of resin molded products) that form a switch in an automobile overhead console, for example, after these moldings, Thus, the work of applying grease, the work of assembling the small knob and the large knob respectively to the holder coated with grease, and the work of printing on the small knob and the large knob had to be performed. In addition, since each operation | work of these application | coating, assembly | attachment, and printing requires a manual operation, the problem that it took time and was inefficient occurred.

  An object of the present invention is to provide a multistage injection molding machine that can easily apply, assemble, and print grease after molding a resin molded product.

The present invention is for achieving the above object, and is configured as follows.
The invention according to claim 1 is a multi-stage injection molding machine in which a plurality of molding dies are connected in the direction of mold clamping opening, and a grease application means for applying grease to a resin molded product after molding, and applying the grease The assembly includes an assembling unit that puts the resin molded product into an assembled state, and a tampo printing unit that performs tampo printing on the assembled resin molded product.

  According to this configuration, therefore, these application, assembly, and printing operations are performed by the multi-stage injection molding machine, so that no labor is required. Therefore, each of these operations can be easily performed.

It is a disassembled perspective view showing a pair of right and left holders, a small knob, and a large knob, which are parts to be molded. It is a perspective view which shows the assembly | attachment state of FIG. It is a front view of the multistage injection molding machine concerning an example. It is a rear view of the multistage injection molding machine of FIG. It is a right view of the multistage injection molding machine of FIG. It is a left view of the multistage injection molding machine of FIG. It is a figure explaining operation | movement of the multistage injection molding machine of FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. FIG. 13 is a diagram for explaining the next operation of FIG. 12. It is a figure explaining the next operation | movement of FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. FIG. 17 is a diagram for explaining the next operation of FIG. 16. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. FIG. 23 is a diagram for explaining the next operation of FIG. 22. It is a figure explaining the operation | movement following FIG. FIG. 25 is a diagram for explaining the next operation of FIG. 24. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. FIG. 32 is a diagram for explaining the next operation of FIG. 31. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. FIG. 35 is a diagram for explaining the next operation of FIG. 34. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. FIG. 43 is a diagram for explaining the next operation of FIG. 42. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the operation | movement following FIG. It is a figure explaining the next operation | movement of FIG. It is a figure explaining the next operation | movement of FIG.

  Hereinafter, the form for implementing this invention is demonstrated using FIGS. 1-48. First, a multi-stage injection molding machine 1 that molds a holder 100, a large knob 110, a small knob 120, the holder 100, the large knob 110, and the small knob 120, which are resin molded products according to an embodiment of the present invention. Will be explained individually. The holder 100, the large knob 110, and the small knob 120 are formed to form a pair on the left and right.

  First, the holder 100, the large knob 110, and the small knob 120 will be described with reference to FIGS. The holder 100, the large knob 110, and the small knob 120 are switch members incorporated in an overhead console (not shown) assembled on the ceiling of the automobile. The large knob 110 and the small knob 120 are inserted into the holder 100 by inserting the projections 112a and 122a of the leg portions 112 and 122 so as to be slidable with respect to the groove 102 formed on the inner surface of the holder 100. On the other hand, it can be assembled.

  Note that tampo printing 114 and 124 described later are applied to the surfaces of the large knob 110 and the small knob 120. Further, the groove 102 of the holder 100 is coated with grease as will be described later in order to smoothly slide the projections 112a and 122a of the large knob 110 and the small knob 120 to be inserted.

  Next, the multistage injection molding machine 1 will be described with reference to FIGS. In this embodiment, a mode in which “multi-stage” is “3 stages” will be described. This multistage injection molding machine 1 is mainly composed of a molding part 2 and a processing part 3. Below, these shaping | molding parts 2 and the process parts 3 are demonstrated separately.

  First, the molding part 2 will be described. The molding unit 2 is a well-known one, and includes a frame F installed on a floor floor (not shown) and three pairs of molding dies (a first molding die 10 and a second molding die in order from the bottom). A mold 12, a third molding die 14), three injection devices (all not shown) for injecting molten resin into each molding die 10, 20, 30, and each molding die 10, 20, 30. 3 product take-out arms (in order from the bottom, first product take-out arm 20, second product take-out arm 22, and third product take-out arm 24).

  A hydraulic cylinder (not shown) is assembled to the frame F. Therefore, this hydraulic cylinder is driven, and the three pairs of molding dies 10, 20, and 30 can be clamped or opened. The first molding die 10 includes an upper die 10a and a lower die 10b that are paired up and down. When the first molding die 10 is clamped, the first molding die 10 is formed with a cavity (not shown) that molds a pair of holders 100 on the left and right.

  Similarly, the second molding die 12 includes an upper die 12a and a lower die 12b that are paired up and down. When the second molding die 12 is clamped, the second molding die 12 is formed with a cavity (not shown) for molding the large knob 110 that forms a pair on the left and right. Similarly, the third molding die 14 includes an upper die 14a and a lower die 14b that are paired up and down. When the third molding die 14 is clamped, the third molding die 14 is formed with a cavity (not shown) for molding the small knob 120 that forms a pair on the left and right.

  Further, the first product take-off arm 20 is provided with a pair of chucks 20a capable of gripping the holders 100 that form a pair on the left and right. The chuck 20a can be advanced and retracted from the first product take-out arm 20 via the cylinder 20b. The first product take-off arm 20 is assembled so as to be able to turn 90 ° with respect to the frame F and to be movable up and down.

  Similarly, the second product take-out arm 22 is also provided with a pair of chucks 22a capable of gripping the large knobs 110 that are paired on the left and right. The chuck 22a can also move forward and backward from the second product take-out arm 22 via the cylinder 22b. The second product take-out arm 22 is also assembled so as to be able to turn 90 ° with respect to the frame F and to be movable up and down.

  Similarly, the third product take-out arm 24 is also provided with a pair of chucks 24a capable of gripping the small knobs 120 that are paired on the left and right. The chuck 24a can also advance and retract from the third product take-out arm 24 via the cylinder 24b. The third product take-out arm 24 is also assembled so as to be capable of turning 90 ° with respect to the frame F and capable of moving up and down with respect to the frame F.

  Then, in the state where these three pairs of molding dies 10, 12, and 14 are clamped, by individually injecting molten resin from each injection device, the above-described holder 100, large knob 110, small knob 120, Are formed to form a pair on the left and right. The molding part 2 is configured in this way.

  Next, the processing unit 3 will be described. The processing unit 3 includes an assembly arm 30, a receiving jig 40, a grease applicator 50, a printing plate 60, a tampo 62, and a dispensing arm 70. The assembly arm 30 is provided with a pair of chucks 30a capable of gripping a pair of left and right large knobs 110 and a pair of chucks 30b capable of gripping a pair of left and right small knobs 120. The assembly arm 30 is assembled to the frame F so as to be movable up and down.

  The receiving jig 40 is configured to receive a holder 100 that is paired on the left and right. The receiving jig 40 is assembled so as to be slidable to the left and right with respect to the frame F and to be movable up and down with respect to the frame F. The grease applicator 50 is assembled to the frame F so as to be movable up and down. The printing plate 60 is assembled to the frame F so as to be slidable back and forth.

  The tampo 62 is assembled to the frame F so as to be movable up and down. The payout arm 70 is assembled so as to be integrated with the frame F side. A tray 74 is assembled to the payout arm 70 through a cylinder 72 so as to be able to advance and retreat. The processing unit 3 is configured in this way.

  Then, with reference to FIGS. 7-48, operation | movement of the multistage injection molding machine 1 mentioned above is demonstrated. In this description, the multistage injection molding machine 1 will be described from the state shown in FIG. The state shown in FIG. 7 is a state after the molten resin is injected into the cavities of the molding dies 10, 12, and 14.

  From this state, as shown in FIG. 8, the molten resin is cooled and solidified, and the molds 10, 12, and 14 are opened. Then, as already described, the holder 100 that forms a pair on the left and right is formed in the first molding die 10. At the same time, the second molding die 12 is molded with a large knob 110 that forms a pair on the left and right. At the same time, the third molding die 14 is formed with a small knob 120 that forms a pair on the left and right.

  Next, as shown in FIG. 9, an operation of turning each product take-out arm 20, 22, 24 by 90 ° toward each molding die 10, 12, 14 side is performed. Next, as shown in FIG. 10, the cylinders 20b, 22b, 24b of the product take-out arms 20, 22, 24 are extended and the chucks 20a, 22a are placed between the molding dies 10, 12, 14 opened. , 24a is inserted. Next, as shown in FIG. 11, the chucks 20 a, 22 a, and 24 a of the product take-out arms 20, 22, and 24 hold the holder 100, the large knob 110, and the small knob 120.

  Next, as shown in FIG. 12, in order to avoid the interference of the holder 100 with the upper mold 10a of the first molding die 10, an operation of lowering the first product take-out arm 20 is performed. At the same time, in order to avoid interference of the large knob 110 with the lower mold 12b of the second molding die 12, an operation of raising the second product take-out arm 22 is performed. At the same time, in order to avoid the interference of the small knob 120 with the lower mold 14b of the third molding die 14, an operation of raising the third product take-out arm 24 is performed.

  Next, as shown in FIG. 13, the operation of shrinking the cylinders 20b, 22b, and 24b is performed so that the chucks 20a, 22a, and 24a inserted between the molding dies 10, 12, and 14 are returned. Next, as shown in FIG. 14, the product take-off arms 20, 22, and 24 that have been turned 90 ° are returned (turned 90 ° as opposed to the previous turn). Next, as shown in FIG. 15, the operation of extending the cylinders 22b and 24b of the second product take-out arm 22 and the third product take-out arm 24 is performed.

  Next, as shown in FIG. 16, an operation of lowering the grease applicator 50 is performed. Thereby, grease can be apply | coated to each groove | channel 102 of the holder 100 which makes a pair on right and left. This description corresponds to “a grease applying means for applying grease to a resin molded product after molding” described in the claims. Next, as shown in FIG. 17, an operation of returning (raising) the lowered grease applicator 50 is performed.

  Next, as shown in FIG. 18, an operation of extending the cylinder 20b of the first product take-out arm 20 is performed. Next, as shown in FIG. 19, an operation for raising the receiving jig 40 is performed. Thereby, the holder 100 which makes a pair on the left and right can be placed on the receiving jig 40. Next, as shown in FIG. 20, an operation of lowering the assembly arm 30 is performed. Next, as shown in FIG. 21, the pair of chucks 30 a of the assembly arm 30 performs an operation of grasping the small knob 120.

  Next, as shown in FIG. 22, an operation of releasing the small knob 120 held by the pair of chucks 24 a of the third product take-out arm 24 is performed. Next, as shown in FIG. 23, the operation of shrinking the cylinder 24b of the third product take-out arm 24 is performed. Next, as shown in FIG. 24, an operation of lowering the assembly arm 30 is performed. Next, as shown in FIG. 25, the pair of chucks 30b of the assembly arm 30 performs an operation of grasping the large knob 110.

  Next, as shown in FIG. 26, an operation of releasing the large knob 110 held by the pair of chucks 22a of the second product take-out arm 22 is performed. Next, as shown in FIG. 27, the operation of shrinking the cylinder 22b of the second product take-out arm 22 is performed. Next, as shown in FIG. 28, an operation of releasing the holder 100 held by the pair of chucks 20a of the first product take-out arm 20 is performed. Next, as shown in FIG. 29, the operation of contracting the cylinder 20b of the first product take-out arm 20 is performed.

  Next, as shown in FIG. 30, the assembly arm 30 is lowered. Thereby, the large knob 110 and the small knob 120 can be respectively assembled to the holder 100 that is paired on the left and right. This description corresponds to “an assembling means for putting the resin molded product coated with grease into an assembled state” described in the claims. Next, as shown in FIG. 31, the operation of releasing the large knob 110 and the small knob 120 held by the pair of chucks 30a and 30b of the assembly arm 30 is performed.

  Next, as shown in FIG. 32, an operation of returning (raising) the lowered assembly arm 30 is performed. Next, as shown in FIG. 33, an operation of moving the printing plate 60 forward is performed. Next, as shown in FIG. 34, the work of lowering the tampo 62 is performed. Thereby, the ink of a predetermined design can be applied to the surface of the tampo 62. Next, as shown in FIG. 35, an operation of returning (raising) the lowered tampo is performed.

  Next, as shown in FIG. 36, an operation of returning (retracting) the advanced printing plate 60 is performed. Next, as shown in FIG. 37, the receiving jig 40 is slid to the left. Next, as shown in FIG. 38, the work of lowering the tampo 62 coated with ink is performed. As a result, the ink applied to the surface of the tampo 62 is transferred to the surfaces of the large knob 110 and the small knob 120.

  That is, tampo printing of a predetermined pattern is performed on the surfaces of the large knob 110 and the small knob 120. This description corresponds to “tampon printing means for performing tampo printing on an assembled resin molded product” described in the claims. Next, as shown in FIG. 39, an operation of returning (raising) the lowered tampo is performed. Next, as shown in FIG. 40, the receiving jig 40 slid left is returned (slid right).

  Next, as shown in FIG. 41, an operation of extending the cylinder 20b of the first product take-out arm 20 is performed. Next, as shown in FIG. 42, the pair of chucks 20 a of the first product take-out arm 20 performs the work of gripping the holder 100. Next, as shown in FIG. 43, an operation of returning (lowering) the raised receiving jig 40 is performed.

  Next, as shown in FIG. 44, the receiving jig 40 is slid to the left. Next, as shown in FIG. 45, the cylinder 72 of the payout arm 70 is extended, and an operation for waiting the tray 74 under the holder 100 is performed. Next, as shown in FIG. 46, an operation of releasing the holder 100 held by the chuck 20a of the first product take-out arm 20 is performed. As a result, the holder 100 falls onto the tray 74 while the large knob 110 and the small knob 120 are assembled.

  Next, as shown in FIG. 47, an operation of returning (shrinking) the extended cylinder 72 of the payout arm 70 is performed. Thereby, collection | recovery of the holder 100 in the state in which the large knob 110 and the small knob 120 are assembled is completed. Finally, as shown in FIG. 48, the receiving jig 40 slid left is returned (slid right). Thereby, a series of operations of the multistage injection molding machine 1 is completed. Thereafter, this series of operations is repeated.

  The multi-stage injection molding machine 1 according to the embodiment of the present invention is configured as described above. According to this configuration, there is provided means for applying grease to each groove 102 of the holder 100 after molding. The holder 100 is also provided with means for assembling the large knob 110 and the small knob 120 respectively. The large knob 110 and the small knob 120 are provided with means for printing a predetermined pattern on the surface. For this reason, since the multi-stage injection molding machine 1 performs these application, assembly, and printing operations, no labor is required. Therefore, each of these operations can be easily performed.

The contents described above are only related to one embodiment of the present invention, and do not mean that the present invention is limited to the above contents.
In the embodiment, the embodiment in which the “multistage” of the multistage injection molding machine 1 is “three stages” has been described. However, the present invention is not limited to this, and any number of stages (eg, “two stages”, “four stages”, etc.) may be used as long as it is “multistage”.

1 Multistage Injection Molding Machine 10 First Molding Mold 12 Second Molding Mold 14 Third Molding Mold 30 Assembly Arm (Assembly Means)
50 Grease application machine (Grease application means)
60 printing plate (tampo printing means)
62 tampo (tampo printing means)
100 Holder (resin molded product)
110 Large knob (resin molded product)
120 Small knob (resin molded product)

Claims (1)

A multi-stage injection molding machine in which a plurality of molding dies are arranged in the direction of mold clamping opening,
Grease application means for applying grease to the resin molded product after molding, assembly means for putting the resin molded article coated with grease into an assembled state, and tampo printing means for performing tampo printing on the assembled resin molded product A multi-stage injection molding machine.

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