CN112440427A - Vertical injection molding device with turntable - Google Patents

Abstract

A vertical injection molding device (10) having a turntable is provided with a turntable (31) that rotates about a vertical center axis (110). The central shaft is a hollow shaft, and the hollow shaft is divided into an upper pipe (111), an intermediate pipe (113), and a lower pipe (115). The upper pipe is connected to the intermediate pipe by an upper rotary joint (112), and the intermediate pipe is connected to the lower pipe by a lower rotary joint (114), so that the upper pipe is provided as a non-rotary pipe, the intermediate pipe is provided as a rotary pipe that rotates in synchronization with the turn table, and the lower pipe is provided as a non-rotary pipe. The upper pipe is provided as a fuel supply system, the upper portion of the intermediate pipe is provided as a fuel supply system having a fuel supply port, the lower portion of the intermediate pipe is provided as a drain system having a drain port, and the lower pipe is provided as a drain system, and supplies fuel from the fuel supply port to the clamping cylinder and discharges fuel from the clamping cylinder to the drain port.

Description

Vertical injection molding device with turntable

Technical Field

The present invention relates to a vertical injection molding apparatus having a turntable.

Background

The injection molding apparatus includes, as main components, a mold clamping device for opening and closing a mold and an injection device for injecting a resin material into the mold.

A device in which the mold is opened and closed along the horizontal axis and the injection axis is horizontal is referred to as a horizontal injection molding device, and a device in which the mold is opened and closed along the vertical axis and the injection axis is vertical is referred to as a vertical injection molding device.

As a vertical injection molding apparatus, for example, an apparatus disclosed in patent document 1 is known.

The apparatus of patent document 1 will be described with reference to fig. 15.

Fig. 15 a is a basic configuration diagram (front view) of a conventional vertical injection molding apparatus, and the vertical injection molding apparatus 200 mainly includes a mold 201, a mold clamping device 202 for opening and closing the mold 201, and an injection device 203 disposed above the mold clamping device 202 and having a vertical injection axis.

Fig. 15(b) is a plan view (schematic view) of the vertical injection molding apparatus, in which 6 molds 201 are arranged at a pitch of 60 ° on a turntable 204, and the molds 201 are injected by an injection device 203 on a table a. Thereafter, the mold 201 is moved in the order of the stages B to E, during which vulcanization is performed, and the rubber molded article is taken out of the mold 201 on the stage F.

Although not described in patent document 1, it is known to cool the die attachment surface.

Cooling is carried out by means of water. A water supply hose for supplying water to the mold 201 and a water discharge hose for discharging water from the mold 201 are disposed on the turntable 204.

Until the injected material is solidified, the mold 201 maintains a clamped state. Therefore, the same number of mold clamping devices 202 as the number of molds 201 are provided on the turntable 204.

A material taking flow path is provided in the mold 201, and a lift lever driven by a cylinder portion is provided in the material taking flow path. The material taking flow path is opened and closed by the lift lever by the cylinder portion. The cylinder part is driven by air (patent document 1, paragraphs 0030 to 0033). Therefore, an air hose is disposed on the turntable 204.

Although not described in patent document 1, the mold clamping device 202 is generally driven by an air cylinder or a hydraulic cylinder. The mold clamping force of the cylinder is small.

When a large mold clamping force is required, a hydraulic cylinder can be used.

The oil supply hose and the oil drain hose are connected to the hydraulic cylinder, and both of these hoses are disposed on the turntable 204.

The water supply hose, the drain hose, the air hose, the oil supply hose, the drain hose, the vacuum hose described later, and the power supply line described later are collectively referred to as a power system line.

These power system lines are not desirably arranged in a mess on the turntable 204.

Therefore, in a vertical injection molding apparatus having a turntable, a structure capable of regularly arranging a plurality of power system lines is required.

One of the methods for improving the quality of the product is to make the inside of the mold vacuum. Vacuum hoses for this use tend to become messy, requiring the vacuum hoses to be neatly arranged.

Therefore, in the vertical injection molding apparatus having the turntable, a structure capable of regularly arranging the vacuum hoses corresponding to the several molds is required. The vacuum hose is also included in the power system circuit.

That is, in the case where a vertical injection molding apparatus having a turntable is desired, a structure capable of regularly arranging a plurality of power system lines is required.

In addition, heating is necessary for vulcanization of the rubber. For this reason, power supply lines (including control system wiring (signal system wiring)) are extended from the outside to each die. These power supply lines are often messy and require a neat layout of the power supply lines.

Therefore, in a vertical injection molding apparatus having a turntable, a structure capable of regularly arranging power supply lines corresponding to a plurality of molds is required.

Patent document 1: japanese patent No. 3618609

Disclosure of Invention

Problems to be solved by the invention

The main subject of the invention is to provide a structure capable of orderly arranging a plurality of power system lines in a vertical injection molding device with a turntable.

Means for solving the problems

The invention according to claim 1 is a vertical injection molding apparatus having a turntable, the vertical injection molding apparatus including a turntable that rotates about a vertical center axis, and a plurality of mold clamping devices that are mounted on the turntable and open and close a mold,

the clamping device is provided with a hydraulic clamping cylinder,

the central shaft is a hollow shaft, and the central shaft is a hollow shaft,

the hollow shaft is divided into an upper pipe, a middle pipe and a lower pipe,

the upper pipe is connected with the middle pipe by an upper rotary joint,

the middle pipe is connected with the lower pipe by a lower rotary joint,

the upper pipe is provided as a non-rotating pipe, the intermediate pipe is provided as a rotating pipe that rotates in synchronization with the turn table, the lower pipe is provided as a non-rotating pipe,

the upper pipe is provided as an oil supply system,

an upper portion of the intermediate pipe is provided with a fuel supply system having a fuel supply port,

the lower part of the intermediate pipe is provided with an oil discharge system with an oil discharge port,

the lower pipe is provided as an oil drain system,

and oil is supplied to the clamping cylinder from the oil supply port, and oil is discharged to the oil discharge port from the clamping cylinder.

The invention according to claim 2 is the vertical injection molding apparatus having a turntable according to claim 1, wherein,

the oil supply port is one, and the oil supply port is arranged on the oil supply port,

an oil supply pipe extends from the oil supply port to the vicinity of the mold clamping cylinder, and an oil supply head is connected to the oil supply pipe to supply oil from the oil supply head to the mold clamping cylinder.

The invention according to claim 3 is the vertical injection molding apparatus having a turntable according to claim 1, wherein,

a slip ring including a ring outer sleeve rotating in synchronization with the turntable and a non-rotating ring inner member electrically connected to the ring outer sleeve is provided at a portion surrounding the upper pipe,

a heater for adjusting the temperature of the mold,

supplying power to the heater using the current collector ring.

The invention of claim 4 is the vertical injection molding apparatus with a turntable according to any one of claims 1 to 3, characterized in that,

a distributor for water and the like is arranged at a part which surrounds the lower pipe and penetrates through the turntable,

a water passage for cooling the mold is provided,

the distributor for water and the like comprises an outer cylindrical distributor outer sleeve rotating synchronously with the rotary table, an inner cylindrical non-rotating distributor inner member surrounded by the distributor outer sleeve, and a sealing ring fitted in the distributor inner member and preventing leakage of fluid,

the non-rotating distributor inner part is provided with a bottom surface water supply opening on the bottom surface for receiving water supply from the outside,

the distributor inner part is provided with a bottom surface water outlet on the bottom surface for discharging water to the outside,

the rotary distributor housing is provided with a side water supply port on the side for supplying water to the water passage,

the dispenser housing has a side drain opening on a side surface thereof for receiving drain water from the water passage.

The invention according to claim 5 provides the vertical injection molding apparatus with a turntable according to claim 4, wherein the turntable is provided with a turntable for supporting the turntable,

the distance between the intermediate pipe and the distributor of the lower water or the like is set to at least the length of the distributor jacket.

The invention according to claim 6 is the vertical injection molding apparatus with a turntable according to claim 4, wherein,

the distributor for water and the like further includes at least one of an air annular groove through which compressed air flows and a vacuum annular groove which is set to a pressure lower than the atmospheric pressure.

The invention according to claim 7 is a vertical injection molding apparatus having a turntable, the vertical injection molding apparatus including a turntable that rotates about a vertical center axis, and a plurality of mold clamping devices that are mounted on the turntable and open and close a mold,

a slip ring for supplying power to a heater for heating the mold is provided at a position surrounding an upper portion of the central shaft,

a distributor for supplying water to the mold at a position surrounding the central axis and in the vicinity of the turntable,

the distributor of water and the like is provided with a bottom water supply opening on the bottom surface,

a water supply hose is connected to the bottom surface water supply port, the water supply hose extends downward,

a working space for disassembling the distributor of water or the like is secured between the slip ring and the distributor of water or the like.

The invention according to claim 8 is the vertical injection molding apparatus with a turntable according to claim 1 or claim 7, wherein,

the turntable is rotatably supported by a center ring or a bearing,

a rotary disk receiving part for receiving the rotary table is arranged at a position opposite to the injection device,

the turntable does not tilt about the center ring or the bearing when the nozzle of the injection device contacts the mold.

The invention according to claim 9 is the vertical injection molding apparatus having a turntable according to claim 8, wherein,

another turntable receiving portion is mounted at a position symmetrical to the turntable receiving portion with the center ring or the bearing as a center.

Effects of the invention

In the invention according to claim 1, the oil supply system and the oil discharge system are distributed to the central shaft. Since the plurality of dies are arranged in a ring shape around the central axis, the hydraulic hoses are regularly extended.

That is, according to the present invention, in the vertical injection molding apparatus having the turntable, a structure in which the plurality of power system lines can be arranged neatly can be provided.

In the invention according to claim 2, one oil supply pipe is extended from one oil supply port to the vicinity of the mold clamping cylinder, and oil is supplied from the oil supply pipe to the mold clamping cylinder.

For example, a branch pipe may be connected to one fuel supply port, and a plurality of fuel supply pipes may extend from the branch pipe and be connected to each of the clamping cylinders.

In this regard, in the present invention, since the oil is guided to the vicinity of the clamping cylinder by one oil supply pipe and one oil supply head, the occupied area on the turntable can be reduced, and the layout of other devices and pipes becomes easy.

That is, according to the present invention, in the vertical injection molding apparatus having the turntable, a structure in which the plurality of power train lines can be further arranged neatly can be provided.

In the invention according to claim 3, a slip ring is provided at a portion surrounding the upper pipe, and the heater is supplied with power by using the slip ring. Since the slip ring is used, the feeder line can be arranged neatly in the mold.

In the invention according to claim 4, a distributor for water or the like is provided at a portion surrounding the lower pipe, and a water supply hose and a water discharge hose extend from the distributor for water or the like to the mold.

In a plan view, a distributor for water or the like is provided at the center of the plurality of molds, and a water supply hose and a water discharge hose are regularly extended from the distributor for water or the like toward the molds.

In the invention according to claim 5, the distance between the intermediate pipe and the distributor for water or the like is set to at least the length of the distributor jacket.

In the case of replacement of sealing rings built into the distributor for water or the like, the distributor casing is pulled out upward relative to the distributor inner part, but in this case, according to the invention, the distributor casing does not touch the intermediate pipe. The lifting operation of the dispenser jacket becomes easy.

In the invention according to claim 6, the distributor for water or the like further includes at least one of an air annular groove and a vacuum annular groove. A dispenser using water or the like sends compressed air to the vicinity of the mold. Or the mold may be evacuated using a dispenser of water or the like.

In the invention according to claim 7, the slip ring as the power supply member is disposed above, the distributor for water or the like as the water supply member is disposed near the turntable, and the water supply hose connected to the distributor for water or the like is disposed below the turntable. A space can be secured between the slip ring and the distributor of water or the like, the space being provided as a working space for disassembling the distributor of water or the like.

In the invention according to claim 8, a turntable receiving portion for receiving the turntable is provided at a position facing the injection device. It is envisaged that the turret is tilted when the nozzle contacts the mould. According to the present invention, since the turntable is received by the turntable receiving portion, the inclination of the turntable can be prevented.

In the invention according to claim 9, the other turntable receiving portion is disposed at a position symmetrical to the turntable receiving portion with the center ring or the bearing as a center. The two turntable receiving portions prevent swing of the turntable, which is expected to occur during normal rotation. Since the rotary disk bays are provided locally and only two, the device costs can be reduced.

Drawings

Fig. 1 is a front view of a vertical injection molding apparatus having a turntable of the present invention.

Fig. 2 is a diagram illustrating a basic configuration of the mold clamping device.

Fig. 3 is a longitudinal section of a dispenser for water or the like.

Fig. 4 is a cross-sectional (horizontal) view of a distributor for water or the like, (a) is a sectional view taken along line 4 a-4 a of fig. 3, (b) is a sectional view taken along line 4 b-4 b of fig. 3, (c) is a sectional view taken along line 4 c-4 c of fig. 3, (d) is a sectional view taken along line 4 d-4 d of fig. 3, (e) is a sectional view taken along line 4 e-4 e of fig. 3, and (f) is a sectional view taken along line 4 f-4 f of fig. 3.

Fig. 5 is a structural view of the center shaft.

Fig. 6 is an enlarged view of part 6 of fig. 5 cut away.

Fig. 7 (a) is a plan view of the turntable, and (b) is a plan view of a portion located lower than the turntable.

Fig. 8 is a diagram illustrating a procedure for replacing the seal ring.

Fig. 9 is a diagram illustrating the sequence of removing the distributor housing from the distributor inner.

Fig. 10 is a cross-sectional view (conceptual view) of the slip ring.

Fig. 11 is a plan view illustrating power supply to the heater.

Fig. 12 is a plan view illustrating water supply to the water passage.

Fig. 13 is a sectional view of the turntable.

Fig. 14 is a 14-way view of fig. 13.

Fig. 15 is a basic configuration diagram of a conventional vertical injection molding apparatus having a turntable, in which (a) is a front view and (b) is a plan view.

Description of the reference numerals

10 … vertical injection molding apparatus with turret (vertical injection molding apparatus), 11 … mold, 12 … injection apparatus, 30 … mold clamping apparatus, 31 … turret, 32 … mold clamping cylinder, distributor of 60 … water, etc., 61 … distributor jacket, 71 … side water supply port, 72 … side water discharge port, 81 … distributor inner, 86 … vacuum annular groove, 87 … seal ring, 88 … air annular groove, 95 … bottom surface, 102 … bottom surface water supply port, 103 … water supply hose, 104 … bottom surface water discharge port, 110 … center shaft, 111 … upper pipe, 112 … upper rotary joint, 113 … intermediate pipe, 114 … lower rotary joint, 115 … lower pipe, 121 … oil supply pipe, 122 … oil discharge pipe, 126 … port, 128 … oil supply port, 130 … oil supply head, 36131 … pipe joint, 140 … outer jacket, 143 … ring, 36153 center water supply port, 36157 central water supply ring, …, 165 … rotary disk receiving part under the injection device, 166 … another rotary disk receiving part.

Detailed Description

Embodiments of the present invention will be described below with reference to the attached drawings. The present invention relates to a technique for neatly laying out power system lines. The power system lines are generic terms of water supply hoses (or pipes, the same applies hereinafter), drain hoses, air hoses, oil supply hoses, oil drain hoses, vacuum hoses, and power supply lines.

[ examples ] A method for producing a compound

As shown in fig. 1, a vertical injection molding apparatus 10 having a turntable (hereinafter, simply referred to as a vertical injection molding apparatus 10) has a mold 11, a mold clamping apparatus 30 for opening and closing the mold 11, and an injection apparatus 12 disposed above (above) the mold clamping apparatus 30 and having an injection axis 12a vertical. The vertical injection molding apparatus 10 is a generic term for an apparatus in which the mold opening and closing direction is set to be vertical.

The vertical injection molding apparatus 10 is appropriately covered with a safety door 14 and a safety cover 15.

The mold clamping device 30 and the injection device 12 are surrounded by the device frame 20, and are supported by the device frame 20.

The apparatus frame 20 includes a base frame 21, first and second support columns 22 and 23 erected from the base frame 21, and a top beam 24 connecting an upper end of the first support column 22 and an upper end of the second support column 23.

The header 24 has a center plate 25 at the center.

There is a central shaft 110 extending downwardly from the central plate 25. The central shaft 110 is a hollow shaft. In the present invention, the axis of the central shaft 110 is not the axis (axle).

A distributor 60 for water or the like, a support 117, and an intermediate pipe module 116, which are some of the components of the central shaft 110, are visible from the side of the safety door 14.

In addition, slip rings 140, 141 as power supply means are visible between the safety door 14 and the roof rail 24.

The upper slip ring 140 is for power and the lower slip ring 141 is for control.

As shown in fig. 2, the mold 11 is placed on the turntable 31.

The mold clamping device 30 includes, as main components, a mold clamping cylinder 32 extending downward from a turntable 31, a traction plate 34 connected to a piston rod 33 of the mold clamping cylinder 32, a tie bar 35 extending upward from the traction plate 34 through a side of the mold clamping cylinder 32 and penetrating the turntable 31, and a movable plate 36 fastened to an upper end of the tie bar 35.

A valve station 39 is provided in the vicinity of the clamping cylinder 32. The valve station 39 houses a clamping cylinder solenoid valve 37 and an ejector solenoid valve 38. The valve station 39 performs an extending/shortening operation of the clamping cylinder 32 and an extending/shortening operation of the ejector 40.

The "extending operation" refers to extending the entire length by advancing the piston rod, and the "shortening operation" refers to shortening the entire length by retracting the piston rod.

A mold closing process:

the clamping cylinder 32 is caused to perform an extension operation. The traction disc 34, the connecting rod 35, and the movable disc 36 descend. The mold 11 is clamped by the turntable 31 and the movable platen 36.

A mold opening procedure:

the mold clamping cylinder 32 is shortened. The traction disc 34, the connecting rod 35, and the movable disc 36 ascend. The lower mold 11a remains and the upper mold 11b rises together with the movable platen 36. The mold 11 is opened, and thus the molded article is taken out from the mold 11. At this time, when the ejector 40 ejects the molded product, the molded product can be easily taken out.

In this example, the ejector 40 is provided below the widthwise center of the die 11. On the other hand, in order to uniformly clamp the mold 11, it is desirable to dispose the clamping cylinder 32 also below the widthwise center of the mold 11. The ejector 40 is matched with the clamping cylinder 32 to realize a so-called position, and measures against the position are required.

In the present invention, the following countermeasures are taken.

Two modules 41 longer than the length of the cylinder portion of the ejector 40 are prepared.

Then, the pair of left and right modules 41 are attached to the upper end of the clamping cylinder 32 by the bolts 42. Next, the module 41 is fixed to the turntable 31 with another bolt 43. So that a gap is secured between the module 41 and the ejector 40.

Since the module 41 avoids interference, the center of the ejector 40 and the center of the clamping cylinder 32 can be arranged coaxially.

In this example, both the ejector 40 and the clamping cylinder 32 are hydraulic cylinders.

Further, it is preferable that the mold clamping device 30 is provided with a movable platen drop prevention mechanism 50 for preventing the movable platen 36 from dropping. A structural example of the movable tray drop prevention mechanism 50 will be described.

The movable plate fall prevention mechanism 50 includes a rod 52 of a band saw blade 51 extending downward from the movable plate 36 through the turn table 31, an air cylinder 53 fixed to the turn table 31, and a lock piece 55 attached to the front of a piston rod 54 of the air cylinder 53. The lock piece 55 is advanced and retreated toward the rod 52 of the band saw blade 51 by the air cylinder 53.

For example, when the die 11 is replaced, the cylinder 53 is extended to insert the locking piece 55 under one saw blade 51. In this state, even if the hydraulic pressure of the mold clamping cylinder 32 is released, the movable plate 36 does not further descend because one saw blade 51 is mounted on the locking piece 55. As a result, the movable board 36 can be prevented from being undesirably dropped.

The structure of the water dispenser 60 described in fig. 1 will be described with reference to fig. 3 to 4.

As shown in fig. 3, the distributor 60 for water or the like mainly includes a distributor outer cover 61 having an outer cylindrical shape and a distributor inner 81 surrounded by the distributor outer cover 61.

The distributor inner 81 is supported by a fixed member 82 and is a non-rotating member. Since the large-diameter bearing 83 and the small-diameter bearing 84 are interposed, the distributor outer 61 can rotate relative to the distributor inner 81. The small diameter bearing 84 is restrained by a cap 85.

In addition, the inner diameter of the distributor inner 81 is larger than the outer diameter of the lower pipe 115 shown by the imaginary line. The lower pipe 115 can be moved up and down (up and down in the drawing) with respect to the distributor trim 81.

In the distributor inner 81, a vacuum annular groove 86 is formed below the small-diameter bearing 84. The vacuum annular groove 86 is provided between a pair of seal rings 87.

In the distributor inner 81, an air annular groove 88 is formed below the lower seal ring 87.

On the other hand, in the distributor housing 61, an upper discharge groove 62 is formed below the air annular groove 88, a water supply annular groove 63 is formed below the upper discharge groove 62, a drain annular groove 64 is formed below the water supply annular groove 63, and a lower discharge groove 65 is formed below the drain annular groove 64.

In the distributor housing 61, an annular seal 66 is provided between the upper discharge groove 62 and the water supply annular groove 63, an annular seal 66 is provided between the water supply annular groove 63 and the water discharge annular groove 64, an annular seal 66 is provided between the water discharge annular groove 64 and the lower discharge groove 65, an annular seal 66 is provided above the upper discharge groove 62, and an annular seal 66 is provided below the lower discharge groove 65.

As shown in fig. 4 (a), the distributor outer cover 61 is provided with 6 side vacuum ports 67, the distributor inner 81 is provided with one vacuum annular groove 86, and the distributor inner 81 is provided with a vacuum long passage 89. The vacuum annular groove 86 extends toward the back side of the drawing.

The distributor outer cover 61 rotates relative to the distributor inner 81, but the side vacuum port 67 is always connected to the vacuum annular groove 86 at any rotational position, and the communication state between the side vacuum port 67 and the vacuum long path 89 can be maintained. This is also the same in (b) to (f) of fig. 4.

As shown in fig. 4 (b), the distributor outer cover 61 is provided with 6 side air ports 68, the distributor inner 81 is provided with one air annular groove 88, and the distributor inner 81 is provided with an air long path 91. The air path 91 extends to the back side of the drawing.

As shown in fig. 4 (c), the distributor outer cover 61 is formed with an upper discharge annular groove 62, and the distributor inner 81 is provided with a discharge passage 92. The discharge long path 92 extends to the inner side of the drawing.

As shown in fig. 4 (d), the distributor housing 61 is provided with 6 side water supply ports 71, the distributor housing 61 is provided with one water supply annular groove 63, and the distributor trim 81 is provided with a water supply long path 93. The water supply long path 93 extends to the back side of the drawing.

As shown in fig. 4 (e), the distributor outer cover 61 is provided with 6 side drain ports 72, the distributor outer cover 61 is provided with one drain annular groove 64, and the distributor inner 81 is provided with a drain long passage 94. The drain path 94 extends to the back side of the drawing.

As shown in fig. 4 (f), a lower discharge annular groove 65 is formed in the distributor housing 61, and the lower discharge annular groove 65 is connected to the discharge path 92.

The distributor inner 81 is provided with 5 long paths including a vacuum long path 89, an air long path 91, a discharge long path 92, a water supply long path 93, and a water discharge long path 94 at appropriate intervals.

Further, bottom surface ports (described later) are provided at end portions (back side in the drawing) of the vacuum long path 89, the air long path 91, the discharge long path 92, the water supply long path 93, and the water discharge long path 94, respectively, and hoses (described later) are connected to these bottom surface ports.

As shown in fig. 3, a bottom vacuum port 96 is provided in a bottom surface 95 of the non-rotating distributor inner 81, and a hose 97a extending from a vacuum pump 97 is connected to the bottom vacuum port 96. By operating the vacuum pump 97, the vacuum annular groove 86 and the like are maintained at a pressure lower than the atmospheric pressure.

Similarly, a bottom air port 98 is provided in the bottom surface 95 of the distributor inner 81, and a hose 101 extending from a compressor 99 is connected to the bottom vacuum port 96. By operating the compressor 99, compressed air is supplied to the air annular groove 88.

Similarly, a bottom water supply port 102 is provided in the bottom surface 95 of the dispenser inner 81, and a water supply hose 103 is connected to the bottom water supply port 102. Water is supplied to the water supply annular groove 63.

Similarly, a bottom drain 104 is provided in the bottom surface 95 of the dispenser inner 81, and a drain hose 105 is connected to the bottom drain 104. Water is drained from the drain ring groove 64.

Further, the leaked water from the water supply annular groove 63 is collected by the upper discharge annular groove 62. Leakage water is prevented from reaching the air annular groove 88.

Similarly, leakage water from the drain annular groove 64 is collected by the lower drain annular groove 65, and the leakage water is prevented from reaching the large diameter bearing 83.

The discharge is discharged through the discharge long path 92, the floor discharge port 106, and the hose 107.

Next, the structure of the center shaft 110 will be described based on fig. 5.

As shown in fig. 5, the center shaft 110 includes an upper pipe 111, an upper rotary joint 112, an intermediate pipe 113, a lower rotary joint 114, and a lower pipe 115, which can be separated from each other.

The upper rotary joint 112 and the lower rotary joint 114 are known rotary pipe joints, and the description of the structure is omitted.

The intermediate pipe 113 has an intermediate pipe module 116 as a main part, and the intermediate pipe module 116 is supported by a portal support 117.

The outer periphery of the distributor 60 of water or the like (to be precise, the distributor housing of reference numeral 61 in fig. 3) is connected to the turntable 31 by a support semicircular plate 118. The support semicircular plate 118 is a semicircular support plate. Thus, the dispenser casing is rotated in synchronization with the turntable 31.

A support 117 is supported by the rotating distributor housing, and the intermediate pipe module 116 is supported by this support 117. The intermediate pipe 113 is a rotary pipe that rotates together with the dispenser housing.

On the other hand, the upper pipe 111 and the lower pipe 115 are non-rotating pipes.

An oil supply hose 119 is connected to an upper end of the upper pipe 111. The oil supply pipe 121 is connected to the oil supply pipe 111 through the entire upper portion of the upper pipe 111 and the upper half portion of the intermediate pipe 113. The oil supply pipe 121 descends along the support 117 and the distributor 60 for water and the like, and extends through the turntable 31.

On the other hand, the drain oil enters the drain hose 123 from the drain oil pipe 122 extending through the turn table 31 from below to above through the lower half portion of the intermediate pipe 113 and the lower pipe 115, and is guided to the oil tank by the drain hose 123.

As shown in fig. 6, the intermediate pipe module 116 is provided with an L-shaped passage 125 in the steel module 124 by a drill, an upper surface port is provided in an upper surface of the steel module 124 at one end of the L-shaped passage 125, an oil supply port 126 is provided in a side surface, and a lead-out oil pipe (fig. 5, reference numeral 121) is connected to the oil supply port 126.

Further, a reverse L-shaped passage 127 is provided in the steel module 124 by a drill, a lower surface port is provided at one end of the reverse L-shaped passage 127 and on the lower surface of the steel module 124, an oil drain port 128 is provided at the side surface, and an oil drain pipe (fig. 5, reference numeral 122) is connected to the oil drain port 128.

As shown in fig. 5, the oil supply pipe 121 and the discharge pipe 122 are disposed in the intermediate pipe module 116 substantially in bilateral symmetry. The advantages that this brings are illustrated in fig. 8.

In fig. 5, the length of the support 117 is set so that the distance between the distributor 60 of water or the like and the intermediate pipe module 116 is greater than the length of the distributor outer jacket (fig. 3, reference numeral 61) of the distributor 60 of water or the like.

In addition, the intermediate pipe module 116 is applied with a bending force by the lead-out oil pipe 121 and the discharge oil pipe 122. However, the intermediate pipe module 116 has sufficient durability because the steel module (fig. 6, reference numeral 124) has sufficient strength.

The details of the oil supply path from the intermediate pipe module 116 to the clamping cylinder 32 will be described based on fig. 7.

The oil supply pipe extends from the intermediate pipe block 116 shown in fig. 7 (a) to the number of mold clamping cylinders 32 shown in fig. 7 (b). In this case, generally, for example, the number of oil supply pipes extending radially from the intermediate pipe block 116 is the same as the number of dies. Although this method may be adopted, the following layout is adopted in the present invention.

That is, as shown in fig. 7 (a), one oil supply pipe 121 extends from the oil supply port 126 of the intermediate pipe module 116, and the turntable 31 is passed through and lowered.

As shown in fig. 7 (b), the tip of one oil supply pipe 121 is connected to one oil supply head 130. The oil head 130 is disposed below the turntable 31 and surrounds the number of mold clamping cylinders 32.

The fueling head 130 is integrally provided with the same number of pipe joints 131 as the mold clamping cylinders 32. The pipe joint 131 is connected to the nearby valve station 39 by a short hydraulic hose 132 (or pipe joint).

According to the present invention, the oil supply head 130 is used in an oil supply system which is often complicated, and thus becomes simple. In particular, as shown in fig. 7 (a), there is a room for arranging other hoses, pipes, and equipment on the turntable 31 because there is only one oil supply pipe 121 on the turntable 31.

However, in fig. 3, the distributor outer 61 rotates relative to the distributor inner 81, and therefore the seal ring 87 and the annular seal 66 inevitably wear, and the sealing performance gradually decreases. Therefore, the seal ring 87 and the annular seal 66 are replaced with new ones every regular time or when necessary. This replacement procedure will be described with reference to fig. 8 and 9.

As shown in fig. 8, the support semicircular plate 118 is removed, the support 117 is removed, and the cover 85 is removed. At this time, the intermediate pipe 113 is in a so-called floating state. Although the intermediate pipe module 116 is heavy, the oil supply pipe 121 and the oil discharge pipe 122 function as temporary supports. Therefore, the upper rotary joint 112 is not applied with an excessive axial force.

In this case, the oil supply pipe 121 and the discharge oil pipe 122 are arranged substantially symmetrically, and have a gate shape. In the upper center of the door, the intermediate pipe module 116 is supported, so the intermediate pipe module 116 is stable and does not tilt.

Next, the lower swivel joint 114 is disconnected from the intermediate pipe module 116. Next, the lower rotary joint 114 and the lower pipe 115 are lowered to the distributor 60 whose upper end is not filled with water or the like.

Next, as shown in fig. 9, the dispenser outer cover 61 is lifted upward relative to the dispenser inner 81, and then moved laterally. As shown in fig. 8, since a space at least as long as the distributor housing 61 is secured between the intermediate pipe module 116 and the distributor 60 of water or the like as a working space, the lifting and lateral movement of the distributor housing 61 shown in fig. 9 is performed without hindrance.

In fig. 9, the sealing ring 87 embedded in the distributor inner 81 is replaced. In addition, the annular seal 66 fitted to the distributor housing 61 is replaced. These replacement operations are easy. In particular, the dispenser jacket 61 can be carried out of the vertical injection molding apparatus 10, and the annular seal 66 can be replaced in an easy posture at the carrying-out destination.

After the replacement, the distributor outer cover 61 is fitted to the distributor inner 81 to be restored.

As shown in fig. 10, the power slip ring 140 includes a ring outer 142 rotating in synchronization with the turntable, and a ring inner 143 electrically connected to the ring outer 142 and non-rotating.

That is, the ring housing 142 is rotated by the coupling member 144 extending from the turret side.

In the non-rotating ring inner 143, an R-phase metal ring 145 is wound around an upper outer peripheral section, an S-phase metal ring 146 is wound around a middle outer peripheral section, and a T-phase metal ring 147 is wound around a lower outer peripheral section.

On the other hand, an R-phase shoe 148 in sliding contact with the R-phase metal ring 145, an S-phase shoe 149 in sliding contact with the S-phase metal ring 146, and a T-phase shoe 151 in sliding contact with the T-phase metal ring 147 are provided on the inner peripheral surface of the rotating ring outer 142.

A power supply box 156 is disposed below the ring casing 142, and a power supply line 155B extending from the ring casing 142 is connected to the power supply box 156. A power supply line 155 extending from the power supply box 156 is connected to the heater control unit 154.

With this, power is supplied from the non-rotating side to the rotating side.

Note that the explanation of the control slip ring (fig. 1, reference numeral 141) is omitted.

As shown in fig. 11, 6 heater control units 154 are disposed corresponding to the mold 11 having the heater 153 built therein. A power supply box 156 is disposed above one of the heater control sections 154. Power supply lines 155 extend from the power supply box 156, and the tips of the power supply lines 155 are connected to the heater control unit 154.

With this, the power supply lines 155, which are often complicated, can be neatly laid out.

As shown in fig. 12, a water supply hose 158 and a water discharge hose 159 radially extending from a central water distributor 60 are connected to the mold 11 having the water passage 157.

With the above, the water supply hose 158 and the drain hose 159, which are often complicated, can be arranged neatly.

In addition, although the drawings are omitted, when the mold 11 is provided with a vacuum passage, a vacuum hose extending radially from a distributor 60 of water or the like at the center is connected to the vacuum passage.

With the above, the vacuum hoses, which are often complicated, can be arranged neatly.

In addition, although the drawings are omitted, when an air cylinder (fig. 2, reference numeral 53) is provided in the vicinity of the mold 11, an air hose extending radially from a distributor 60 of water or the like in the center is connected to the air cylinder.

With the above, the air hoses, which are often complicated, can be arranged neatly.

The present invention can also be applied to a technique of adjusting the temperature of the mold 11 by using a mold temperature adjuster without incorporating the heater 153 in the mold 11.

As shown in fig. 13, the turntable 31 of the present invention is rotatably supported by a center ring 161 or a bearing. The turntable 31 is provided with piping and hoses in addition to the mold clamping device 30 and the mold 11. The turntable 31 performs balance adjustment in this state.

When the turntable 31 is rotated by the rotation motor 162 and the gear 163, the turntable 31 is swung (tilted) up and down around the center ring 161 or the bearing due to the hose swinging or the like.

As a countermeasure, a turntable receiving portion 165 including a corner fitting 167 and a slide plate 168 attached to an upper surface of the corner fitting 167, and another turntable receiving portion 166 are provided on the non-rotating portion side. The rotary disk receiving portions 165 and 166 have a height adjusting function, and the slide plate 168 is adjusted to a predetermined height or a desired height.

The slide plate 168 is formed by embedding a solid lubricant in a sintered metal or light alloy mixed with graphite. The friction coefficient is reduced by the graphite or the solid lubricant, and the turntable 31 is horizontally rotated without being rocked.

Although detailed description is omitted, in the injection device 12 shown in fig. 1, the heater cylinder moves up and down along the injection axis 12 a. While descending, the nozzle contacts the mold 11. Due to this contact, a downward force F shown in fig. 13 is applied to one mold 11, from the mold 11 to the turntable 31. However, since the force F is supported by the turntable receiving portion 165 directly below, the turntable 31 does not tilt clockwise in the drawing.

As shown in fig. 14, one turntable receiving portion 165 is disposed below the injection device 12, and the other turntable receiving portion 166 is disposed at a symmetrical position.

The 6 turntable receiving portions 165 may be arranged corresponding to the 6 mold clamping devices 30, or the annular turntable receiving portion 165 may be arranged on the lower edge of the turntable 31, but the device cost is high. In contrast, by partially disposing the turntable receiving portion 165 as shown in fig. 14, the apparatus cost can be significantly reduced.

The structure of the rotating disk receiving portion 165 is not limited to the embodiment, and the slide plate 168 may be a freely rotating roller, ball, or ball. The same applies to the other rotary disk receiving portion 166.

Industrial applicability of the invention

The invention is suitable for a vertical injection molding device with a turntable.

Claims (9)

1. A vertical injection molding apparatus having a turntable, the vertical injection molding apparatus including a turntable that rotates about a vertical center axis, and a plurality of mold clamping devices that are mounted on the turntable and open and close a mold,

the clamping device is provided with a hydraulic clamping cylinder,

the central shaft is a hollow shaft, and the central shaft is a hollow shaft,

the hollow shaft is divided into an upper pipe, a middle pipe and a lower pipe,

the upper pipe is connected with the middle pipe by an upper rotary joint,

the middle pipe is connected with the lower pipe by a lower rotary joint,

the upper pipe is provided as a non-rotating pipe, the intermediate pipe is provided as a rotating pipe that rotates in synchronization with the turn table, the lower pipe is provided as a non-rotating pipe,

the upper pipe is provided as an oil supply system,

an upper portion of the intermediate pipe is provided with a fuel supply system having a fuel supply port,

the lower part of the intermediate pipe is provided with an oil discharge system with an oil discharge port,

the lower pipe is provided as an oil drain system,

and oil is supplied to the clamping cylinder from the oil supply port, and oil is discharged to the oil discharge port from the clamping cylinder.

2. The vertical injection molding apparatus with a turntable according to claim 1,

the oil supply port is one, and the oil supply port is arranged on the oil supply port,

an oil supply pipe extends from the oil supply port to the vicinity of the mold clamping cylinder, and an oil supply head is connected to the oil supply pipe to supply oil from the oil supply head to the mold clamping cylinder.

3. The vertical injection molding apparatus with a turntable according to claim 1,

a slip ring including a ring outer sleeve rotating in synchronization with the turntable and a non-rotating ring inner member electrically connected to the ring outer sleeve is provided at a portion surrounding the upper pipe,

a heater for adjusting the temperature of the mold,

supplying power to the heater using the current collector ring.

4. The vertical injection molding apparatus with a turntable according to any one of claims 1 to 3,

a distributor for water and the like is arranged at a part which surrounds the lower pipe and penetrates through the turntable,

a water passage for cooling the mold is provided,

the distributor for water and the like comprises an outer cylindrical distributor outer sleeve rotating synchronously with the rotary table, an inner cylindrical non-rotating distributor inner member surrounded by the distributor outer sleeve, and a sealing ring fitted in the distributor inner member and preventing leakage of fluid,

the non-rotating distributor inner part is provided with a bottom surface water supply opening on the bottom surface for receiving water supply from the outside,

the distributor inner part is provided with a bottom surface water outlet on the bottom surface for discharging water to the outside,

the rotary distributor housing is provided with a side water supply port on the side for supplying water to the water passage,

the dispenser housing has a side drain opening on a side surface thereof for receiving drain water from the water passage.

5. The vertical injection molding apparatus with a turntable according to claim 4,

the distance between the intermediate pipe and the distributor of the lower water or the like is set to at least the length of the distributor jacket.

6. The vertical injection molding apparatus with a turntable according to claim 4,

the distributor for water and the like further includes at least one of an air annular groove through which compressed air flows and a vacuum annular groove which is set to a pressure lower than the atmospheric pressure.

7. A vertical injection molding apparatus having a turntable, the vertical injection molding apparatus including a turntable that rotates about a vertical center axis, and a plurality of mold clamping devices that are mounted on the turntable and open and close a mold,

a slip ring for supplying power to a heater for heating the mold is provided at a position surrounding an upper portion of the central shaft,

a distributor for supplying water to the mold at a position surrounding the central axis and in the vicinity of the turntable,

the distributor of water and the like is provided with a bottom water supply opening on the bottom surface,

a water supply hose is connected to the bottom surface water supply port, the water supply hose extends downward,

a working space for disassembling the distributor of water or the like is secured between the slip ring and the distributor of water or the like.

8. The vertical injection molding apparatus with a turntable according to claim 1 or 7,

the turntable is rotatably supported by a center ring or a bearing,

a rotary disk receiving part for receiving the rotary table is arranged at a position opposite to the injection device,

the turntable does not tilt about the center ring or the bearing when the nozzle of the injection device contacts the mold.

9. The vertical injection molding apparatus with a turntable according to claim 8,

another turntable receiving portion is mounted at a position symmetrical to the turntable receiving portion with the center ring or the bearing as a center.

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