JPH069818Y2 - Inner / outer cylinder fitting supply device for injection molding machine - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is to supply inner and outer cylindrical metal fittings for automatically setting the inner and outer cylindrical metal fittings of a vibration-proof rubber bush in a mold of an injection molding machine. It relates to the device.

(Problems to be solved by the prior art and the invention) In a vibration-proof rubber bush in which an inner tubular fitting and an outer tubular fitting are connected by a rubber elastic body, generally, the inner tubular fitting and the outer tubular fitting are set in a mold. In this state, it is manufactured by injecting a predetermined rubber material between the inner tubular fitting and the outer tubular fitting.

Thus, in the injection molding machine that injection-molds such a vibration-proof rubber bush, conventionally, in order to set the inner tubular metal fitting and the outer tubular metal fitting in the mold, a mechanical grip for mechanically gripping these metal fittings is used. A metal fitting supply device with a gripping mechanism is used,
The setting operation of the inner cylinder fitting and the outer cylinder fitting with respect to the mold has been performed separately for the inner cylinder fitting and the outer cylinder fitting by the fitting supplier.

Therefore, in the conventional injection-molding machine for the vibration-proof rubber bush, there is a problem that it takes a long time to set the inner cylinder fitting and the outer cylinder fitting in the mold, and thus the injection molding cycle becomes long.

(Means for Solving the Problem) The present invention has been made in view of such circumstances, and its gist is to provide an inner cylinder fitting and an outer cylinder of a vibration-proof rubber bush in the injection molding machine as described above. The inner and outer tube metal fittings supply device for automatically setting the metal fittings to the mold
Conveying means that conveys the inner tubular metal fitting and the outer tubular metal fitting to a predetermined supply position in a set positional relationship with respect to the mold, and (b) sucks the inner tubular metal fitting and the outer tubular metal fitting that have been transported to the supply position. A magnet adsorbing unit provided with a magnet means for holding and a detaching means for detaching the inner tubular metal fitting and the outer tubular metal fitting from the magnetic means against the attraction force of the magnet means, and And (d) moving means for moving the raising and lowering means between the supply position and a setting position for setting the inner and outer cylindrical metal fittings with respect to the mold, and the conveying means. The inner and outer tubular metal fittings are conveyed, the moving means moves the elevating means, the elevating means moves up and down by the elevating means at the supply position and the setting position, and the detaching means moves at the setting position. Said by, on the basis of the withdrawal operation from the magnet means of the outer tubular member, among lies in the outer sleeve and configured so as to automatically supplied to the die.

(Operation) According to such an inner / outer tubular metal fitting supply device, the inner tubular metal fitting and the outer tubular metal fitting conveyed to the supply position by the conveying means are simultaneously conveyed to the set position for the mold of the injection molding machine, and they are The inner tubular fitting and the outer tubular fitting can be set in the mold at the same time. Therefore, compared to the case where the inner and outer cylinder fittings are separately set in the mold of the injection molding machine, the time required for the setting operation of those fittings, and thus the injection molding cycle of the anti-vibration rubber bush, is greatly increased. Can be shortened to

(Embodiment) An embodiment of the present invention will be described in detail below with reference to the drawings in order to clarify the present invention.

First, FIG. 1 schematically shows an example of an injection molding machine according to the present invention. Therein, 10 is a movable plate, which is attached to the ram 14 of the mold clamping cylinder 12 and can be moved up and down as the ram 14 moves up and down. The mold 16 attached to the upper surface of the movable plate 10 is pressed by the upward movement of the movable plate 10.

Here, the mold 16 has an inner tubular metal fitting 26 and an outer tubular metal fitting 28 as shown in FIGS. 2 (A) and 2 (B), respectively, for the purpose and purpose as shown in FIG. 2 (C). A plurality of sets are set with a positional relationship corresponding to the positional relationship between the inner and outer cylindrical metal fittings of the vibration-proof rubber bush. Then, in a state where the mold 16 is pressurized, a predetermined rubber material is injected from the injection device 30 arranged on the stationary platen 18 into the annular space between the inner tubular metal fitting 26 and the outer tubular metal fitting 28 of each set. As a result, a plurality of anti-vibration rubber bushes in which the inner tubular metal piece 26 and the outer tubular metal piece 28 of each set are connected by an annular rubber elastic body are simultaneously molded. ing.

Each of the molded rubber cushions is automatically taken out by the projecting device 32 after the mold 16 is lowered. In addition, each set of the inner tubular metal fitting 26 and the outer tubular metal fitting 2
Here, both ends of the inner tubular metal fitting 26 are outer tubular metal fittings 28 here.
Of the inner cylinder metal fitting 26 and the outer cylinder metal fitting 28 are arranged concentrically with each other in a state of protruding by a predetermined dimension from both ends of the inner cylinder metal fitting 26 and the outer cylinder metal fitting 28. The molds 16 are set in two rows one by one.

In FIG. 1, 22 is an inner tubular metal fitting 26 and an outer tubular metal fitting 28.
Is a transporting device for transporting the to the suction position (supply position) by the suction unit 76, and has a structure as shown in FIGS. 3 to 6, and includes an inner tubular metal fitting 26 and an outer tubular metal fitting 28.
With the set positional relationship with respect to the mold 16, a plurality of sets (4 sets in this case) can be continuously conveyed to the metal fitting supply position.

That is, in FIG. 3 to FIG. 6, 34 is the transport device 2
2 is a base frame, and the height adjustment mechanism 36 is provided on the lower surface.
On the upper surface thereof, a pair of support frames 38 that are parallel to each other are arranged in a state of being inclined at a predetermined angle. The upper rotary shaft 40 and the lower rotary shaft 42 are arranged in parallel to each other in a state of straddling between the upper end portions and the lower end portions of the support frames 38. The rotating shafts 40 and 42 are provided with sprockets 44 and 46, respectively, around which a chain 48 is wound. Then, in a state of straddling the chains 48, the plurality of support plates 5 are separated from each other by a pair of distances.
0 is attached to each of these support plates 50, as shown in FIGS. 7 and 8.
Four sets of trays 52 capable of holding the inner tubular metal piece 26 and the outer tubular metal piece 28 in a set positional relationship with the mold 16 are attached.

Here, in the tray 52, a center pin 54 is erected at the center of the bottom wall of the bottomed cylindrical body, and the center pin 5 is
4 has a structure in which an annular groove 56 is formed so as to surround the metal plate 4, and is attached to the support plate 50 at an interval corresponding to the set position interval of the set of fittings 26, 28 with respect to the mold 16. Then, the inner tubular metal fitting 26 is externally inserted into the center pin 54 of the tray 52, and the outer tubular metal fitting 28 is further fitted into the cylindrical side wall portion 58 of the bottomed cylindrical body, so that the inner tubular metal fitting 26 and the outer cylinder are The metal fitting 28 is held by the tray 52 in a set positional relationship with the mold 16.

A motor 62 is connected to the upper rotary shaft 40 via an indexing device 60, and the upper rotary shaft 40 is rotated by a predetermined angle set by the indexing device 60 based on the rotational force of the motor 62. It is supposed to be done. Then, here, each time the upper rotary shaft 40 is rotated by the angle set by the indexing device 60, a new support plate 50 is moved to the metal fitting supply position.

Therefore, the tray 52 of each support plate 50 is attached to the inner tubular fitting 2
If 6 and the outer cylinder fitting 28 are set, four sets of the inner cylinder fitting 26 and the outer cylinder fitting 28 are continuously conveyed to the fitting supply position based on the rotation operation of the upper rotary shaft 40 by the motor 62. It is.

Here, each support plate 50 is fitted into the mounting pins 66 fixed to the chain 48 in the pin holes 64 provided at both ends thereof, and the pine needle pins 68 prevent the supporting plates 50 from coming out of the mounting pins 66. , And is elastically and detachably attached to the chain 48 via the cushioning rubber 70. Thus, the type of the tray 52 can be changed according to the type of the rubber cushion to be molded.

In FIGS. 3 to 6, 72 is each chain 4
It is a chain guide provided for 8 and 74
Is a chain adjusting mechanism for adjusting the position of the lower rotary shaft 42 to adjust the tension of the chain 48.

In FIG. 1, reference numeral 24 is a transfer device for transferring the metal fittings 26, 28 transferred by the transfer device 22 to the set position on the mold 16, and is shown in FIGS.
It has a structure as shown in FIGS. That is, in these drawings, 76 is the transport device 22.
Is a suction unit for suction-holding the metal fittings 26, 28 transported to the supply position by the support plate 80.
It has a plurality of magnets 78 held by. As shown in FIGS. 9 to 11, the suction unit 76 can suck and hold four sets of the inner tubular metal piece 26 and the outer tubular metal piece 28 at a time, for a total of eight sets. There is. Thus, the magnet 78 that attracts these metal fittings 26, 28 is
As shown in Fig. 2, each metal fitting 26, 28
The magnets 78 are arranged on the support plate 80 so as to be attracted by the magnets 78. Further, as shown in FIGS. 12 and 13, an inner cylinder metal fitting positioning pin 82 and an outer cylinder metal fitting positioning pin 84 are planted downwardly on the support plate 80, respectively. The outer cylinder metal fitting 28 is loosely fitted to the pins 82 and 84 to be positioned within a certain error range.

As shown in FIG. 13, each of the magnets 78 has a rubber block 86 fitted in a bottomed hole of a support plate 80.
Of the rubber block 86 when the metal fittings 26 and 28 are sucked, as will be described later. Each metal fitting 2 while compressing and deforming
It is forcibly pressed against the end faces of 6, 28. That is, each magnet 78 absorbs the height position error of each metal fitting 26, 28 and can surely attract them.

The bottomed hole for accommodating the magnet 78 that attracts the inner tubular metal fitting 26 is formed so as to face the recess 88 for absorbing the amount of protrusion of the inner tubular metal fitting 26 from the outer tubular metal fitting 28.

As shown in FIGS. 9 to 11, the suction unit 76 has a bracket 90 having a U-shaped cross section,
The bracket 90 is connected to the rotary shaft 94 of the rotary actuator 92 at the central position and can be rotated by 180 degrees around its center line by the rotary actuator 92. In these drawings, 96 is an indexing device that determines the rotation stop position of the bracket 90, 98 is a proximity sensor that is provided symmetrically with the rotation shaft 94 sandwiched, and 100 is attached to the bracket 90. It is a detector.

The rotary actuator 92, as shown in FIG.
It is attached to an intermediate support plate 106 connected to 04, and can be lifted and lowered by this lift cylinder 102. Reference numeral 108 in the figure denotes a guide rod that guides the intermediate support plate 106 up and down.

The elevating cylinder 102 is attached to a guide member 112 which is guided in the horizontal direction by a guide frame 110 arranged on the stationary platen 18 of the injection molding machine. It is designed to be slid to. Then, when the suction unit 76 is lowered in the state where the suction unit 76 is moved to the set position on the mold 16, the metal members 26 and 28 suction-held are held in the mold 16 as shown in FIG. A predetermined amount is rushed into the set place. At this time, in the mold 16, the inner tubular metal fitting 26 is externally inserted into the positioning pin 116 and the outer tubular metal fitting 28 is fitted into the bottomed hole 118, whereby the metal fittings 26, 28 are positioned. However, at the tip of the positioning pin 116 and the opening of the bottomed hole 118,
Tapered surfaces 130 and 132 are formed as guide surfaces, respectively, so that the metal fittings 26 and 28 are positioned exactly on the positioning pin 1.
16, even if they do not coincide with the positions of the bottomed holes 118, the inner cylinder fitting 26 and the outer cylinder fitting 28 are smoothly set at the set position of the die 16 by lowering the suction unit 76.

Thus, the metal fittings 26, 28 which have been pushed into the metal fitting set position of the die 16 by the elevating cylinder 102 are pushed to the final setting position by the projecting mechanism 120 provided in the suction unit 76. That is, as shown in FIG. 10 to FIG. 13, the support plate 8 is attached to the portions facing the end faces of the metal fittings 26 and 28 attracted to the attraction unit 76 by the magnet 78, respectively.
A plurality of projecting rods 124 supported by a common support plate 122 in a state of penetrating 0 and projecting downward are provided. Then, when the supporting plate 122 is lowered by the protruding cylinder 126 provided in the bracket 90, the protruding rods 124 penetrate the supporting plate 80 and are projected downward.
As a result, the metal fittings 26, 28 are separated from the magnet 78 and pushed into the set portion of the mold 16. Incidentally, reference numeral 128 in the drawing denotes a guide rod for guiding the support plate 122 up and down.

With such a metal fitting supply device, the metal mold 26 is attached to the mold 16.
To set 28, first, the guide member 112 is moved to the metal fitting supply position, the lifting unit 102 lowers the suction unit 76, and the transport device 22 conveys the four sets of metal fittings 26, 28. Are attracted and held by the magnet 78 arranged on one side of the support plate 80. Then, after that, the suction unit 76 is once lifted, and the suction unit 76 is rotated by 180 degrees around the center line by the rotary actuator 92, while the carrier device 2 is used.
The new four sets of metal fittings 26 and 28 are conveyed to the metal fitting supplying position at 2 and the suction unit 76 is lowered in that state, and the metal fittings 26 are moved by the magnet 78 arranged on the other side of the support plate 80. , 28 are adsorbed.

When the metal fittings 26, 28 are attracted, the magnets 78 are forcibly pressed against the metal fittings 26, 28 based on the compressive deformation of the rubber block 86, as described above. It can be surely adsorbed and held.

Next, the suction unit 76 is attached to the metal fittings 26, 28.
After the metal fittings 26, 28 are removed from the tray 52 of the transfer device 22, the horizontal drive cylinder 1
The guide member 112 is moved to a metal fitting setting position on the mold 16 by 14, and the suction unit 76 is lowered by the elevating cylinder 102, and the metal fittings 26 and 28 suction-held by the suction unit 76 are set on the mold 16. Make a certain amount plunge into a place. Then, in the lowered state of the lifting cylinder 102,
The projecting cylinder 126 projects the projecting rod 124 of the projecting mechanism 120, and the metal fittings 26 and 28 are attached to the mold 16
Push it to the final metal fitting set position.

As a result, eight sets of metal fittings 26, 28 are set in the mold 16 of the injection molding machine.
After setting 28, the suction unit 76 is retracted to the standby position shown in FIG.
6 is pressed and the injection operation of the rubber material is performed.

As described above, according to the apparatus of the present embodiment, the inner tubular metal fitting 26 and the outer tubular metal fitting 28 can be set in the mold 16 at the same time. Compared with the conventional device in which the tubular metal fitting 28 is set separately, the time for setting the metal fittings 26 and 28 can be shortened, and the injection molding cycle of the injection molding machine can be shortened. Further, since the metal fittings 26, 28 are attracted and held by the magnet 78, as described above, the metal fitting 2 for the mold 16 is provided.
Even when the stop position of the guide member 112 deviates from the set position by a slight amount when the 6, and 28 are set, the metal fittings 26, 28 can be smoothly set on the set portion of the mold 16.

The molded anti-vibration rubber bush is taken out of the mold 16 by the take-out device 32 after the lowering operation of the mold 16 as described above. The take-out device 32 chucks the anti-vibration rubber bush. Since the mechanism 129 is mechanically gripped and taken out and has the same structure as a conventional one, detailed description thereof will be omitted here.

Although one embodiment of the present invention has been described in detail above, the present invention can be implemented in other modes.

For example, the arrangement form of the magnets 78 and the like in the adsorption unit 76 can be appropriately changed according to the arrangement form of the metal fittings 26, 28 with respect to the mold 16. Further, it is also possible to adopt a structure in which the rotary actuator 92 for rotating the suction unit 76 is omitted.

In addition to this, it is omitted to enumerate specific examples one by one, but the present invention can be implemented in variously modified, modified, and improved modes without departing from the spirit thereof.

(Effect of the Invention) As is apparent from the above description, in the device of the present invention, the inner tubular metal fitting and the outer tubular metal fitting of the anti-vibration rubber bush can be simultaneously set in the mold, so that the injection molding of the injection molding machine is performed. It is possible to shorten the cycle and improve the productivity of the rubber cushion. In addition, according to the present invention, since the method of attracting the metal fittings by the magnet is adopted, there is an advantage that the apparatus can be constructed at a lower cost than the method of mechanically chucking the metal fittings.

[Brief description of drawings]

FIG. 1 is a front view schematically showing an example of an injection molding machine equipped with an inner and outer cylindrical metal fitting supply device according to the present invention, and FIG. 2 is a front view of a metal fitting set in a mold of the injection molding machine of FIG. It is an example, (A) is an inner tubular fitting, (B) is an outer tubular fitting,
Further, (C) is a perspective view showing the respective set positional relationships. FIG. 3 is a front view of a transfer device in the injection molding machine of FIG. 1, and FIGS. 4, 5, 6, 7, and 8 are explanatory views of the main parts of the transfer device. is there. Figure 9,
FIG. 10 and FIG. 11 are explanatory views showing enlarged main parts of the metal fitting supply device in FIG. 1, respectively, and FIGS. 12 and 13 similarly explain the arrangement of each member in the suction unit. FIG. FIG. 14 is an explanatory view for explaining the operation of setting the metal fittings in the mold in the injection molding machine of FIG. 16: Mold, 22: Conveying device 24: Transfer device, 26: Inner tubular metal fitting 28: Outer tubular metal fitting, 32: Extracting device 48: Chain, 50: Support plate 52: Tray, 76: Adsorption unit 78: Magnet, 80 : Support plate 82, 84: Positioning pin 92: Rotary actuator 102: Lifting cylinder 110: Guide frame 112: Guide member 114: Horizontal drive cylinder 116: Positioning pin 118: Bottomed hole 120: Projecting mechanism 124: Projecting rod 130 , 132: Tapered surface

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. An anti-vibration system in which a predetermined rubber material is injected between the inner tubular metal fitting and the outer tubular metal fitting set in the metal fitting, and the inner tubular metal fitting and the outer tubular metal fitting are connected by a rubber elastic body. An injection molding machine for molding a rubber bush, which is an inner / outer tubular metal fitting supplying device for automatically setting the inner tubular metal fitting and the outer tubular metal fitting to the mold, and has a setting positional relationship with respect to the mold. A transport means for transporting the inner tubular metal fitting and the outer tubular metal fitting to a predetermined supply position; a magnet means for attracting and holding the inner tubular metal fitting and the outer tubular metal fitting transported to the supply position; A metal fitting adsorbing unit having a detaching means for separating the tubular metal fitting from the magnet means against the adsorbing force of the magnet means, an elevating means for elevating and lowering the metal fitting adsorbing unit, and the elevating means to the supply position. , The inner and outer cylinder fittings for the mold And a moving means for moving between the set allowed to set position, among by the conveying means, the conveying operation of the outer tubular member,
Moving operation of the elevating means by the moving means, elevating operation of the metal fitting suction unit by the elevating means at the supply position and the setting position, and magnet means of the inner and outer tubular metal fittings by the separating means at the setting position. An inner and outer tubular metal fitting supply device for an injection molding machine, wherein the inner and outer tubular metal fittings are automatically supplied to the mold based on a detachment operation from the.