JPS61284413A - Conveyor of replacement mold of injection molding machine and the like - Google Patents

Abstract

PURPOSE:To enable to carry in or carry out a mold to either of a right and left molding machine, by a method wherein a third shaft is provided with a connecting member connecting with the mold and a turning control device controlling a second shaft and the third shaft is provided. CONSTITUTION:As for a turning control device 11, when a first link 6 is turned by a first shaft 5, a second sprocket 28 controls a turning range of a second shaft 7 by shifting a mesh position between a chain 29 and a first sprocket 27 by turning amount as the first sprocket 27 is stationary. a turning control device 12 controls similarly a turning range of a third shaft 9. When a second link 8 is moved in the direction of a coupling piece 26 by driving a motor 3 and turning a driving wheel 4 and the first link 6, the first link 6 and second link 8 are extended while turnings of the first link 6 and second link 8 are being controlled by the second shaft 7 and third shaft 9, connecting member 10 arrives at a pin hole of the lower part of the coupling piece 26 and a pin 10b is made to connect with the coupling piece 26 by actuating an actuator 10a. A mold 25 is moved to predetermined positions on rollers 16, 17 by inverting the first link 6. Replacement of the mold is performed similarly when a molding machine is on the opposite side.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to an exchange mold conveying device for an injection molding machine or the like.

[Technical background of the invention and its problems]

BACKGROUND ART Conventionally, in injection molding machines and the like, molds have been replaced efficiently in a short period of time, and for this reason, a trolley for carrying in and out of molds is often used as a mold changing device.

Some of these trolleys run on tracks, while others
Some of them run off-track, and some of them are fixed types that don't run, but recently we have developed a total of 6 models that further shorten the mold change time.
Therefore, there are many models that have two stations on the cart for loading and unloading.

Each of these stations is equipped with a drive device for carrying the mold out of or into the injection molding machine.

By the way, this drive device has a so-called snake chain method that moves the chino forward and backward within the guide groove, and the mold is carried in and out by engaging the hook part attached to the tip of the chino with the mold. ing. Other methods include, for example, Japanese Patent Publication No. 55-48535 and Japanese Patent Publication No. 54-37.
As seen in Publication No. 060, driving the conveyance roller,
Normal rotation.

In addition to making it possible to carry in and out by reversing the mold, some molding machines also have fixed platens and movable platens in the molding machine equipped with similarly driven rollers for carrying in and out of the mold.

For the receiving guide roller or drive roller part in the molding machine and the passing roller to the carriage, it is possible to extend the receiving guide part on the molding machine side, or extend the bracket with roller from the carriage side, or from both sides. The mold can be completely transferred by providing an independent stand with rollers.

As mentioned above, conventional devices require a device to drive the rollers, but by using a snake chain method guided by grooves, the mold is moved in a direction perpendicular to the mold opening/closing direction of the molding machine. was carrying in and out.

In other words, to explain these conventional mold changing operations in more detail, first, the mold to be used for the next molding is lifted from the mold storage by a crane, and then transferred to a trolley near the molding machine. Alternatively, move the trolley to the mold storage, transfer it onto the trolley there, transport the trolley to the molding machine, park it at the mold unloading position currently in use for the molding machine, and remove the empty space on the trolley. Transport the mold inside the molding machine to the station side.

The molds are replaced by transporting the molds used for molding the molds loaded on the cart into the molding machine.

However, in terms of factory layout, it would be ideal if the molding machines could be installed on both sides of the trolley in terms of effective use of space, but if this was done using the Cheno-pulled method,
A trolley for replacing molds on the opposite side is required, and if the drive roller method is used, molds can be carried in and out of the molding machine on either the left or right side of the trolley, but a roller drive device must be installed on the molding machine side. Therefore, the cost of both becomes 20% higher.

Furthermore, in a small molding machine, it is extremely difficult to provide the above-mentioned drive device in the molding machine in terms of space and is impractical.

(Object of the Invention) In view of this, the present invention provides a replacement mold conveying device for an injection molding machine or the like that is inexpensive in terms of cost and can carry molds into and out of either the left or right molding machine on a trolley. This was done with the aim of solving the drawbacks of the prior art.

[Summary of the invention]

In order to achieve the above object, in the present invention, in a replacement mold conveying device such as an injection molding machine, a machine frame of the device main body is provided with a
A first shaft with a transmission wheel driven by a motor or the like in the frame of the machine fixed to one side is movably provided, and the other side of the first shaft is fixed to one end of the first link. An intermediate portion of a second @ is rotatably fitted to the other end, one side of the second shaft is rotatably fitted to one end of a second link, and the other end of the second link is rotatably fitted. The middle part of the third shaft is rotatably fitted, and an engaging member for a mold to be replaced is fixed to one side of the third shaft, and a supporting part of the first flik in the machine frame is fixed to one side of the third shaft. , and the other side of the second shaft, and between the other end of the first link facing the second link and the other side of the third shaft, respectively.
The present invention is also characterized in that it is provided with a third axis rotation IO regulating means.

[Embodiments of the invention]

The present invention will be described below with reference to embodiments shown in FIGS. 1 to 9.

The exchange mold conveying device for an injection molding machine or the like according to the present invention has a machine frame 2 of a device body 1, and a transmission wheel 4 such as a sprocket driven by a motor 3 or the like fixed to one side. 1st axis 5
a first link 6 having the other side 5a of the first shaft 5 fixed to one end; a second shaft 7 having an intermediate portion rotatably fitted to the other end of the first link 6; A second link 8 is rotatably fitted to one end of the second shaft 7; an intermediate portion is rotatably fitted to the other end of the second link 8; It consists of a third shaft 9 to which is fixedly attached, and rotation regulating means 11, 12 for the second shaft 7 and the third shaft 9, etc.

In this embodiment, as shown in FIGS. 2 and 3, the device main body 1 has a cart 15 having four wheels 14 for running on rails 13, and the longitudinal direction is smaller than the width direction. The molding machine is also long and is shown placed next to a molding machine on the left (not shown).

The machine frame 2 is provided on the truck 15, and on the upper surface of the machine frame 2 there is a tenth frame rotatable about a shaft extending in the longitudinal direction.
A large number of pairs of the -ra 16 and the twentieth-ra 17 are arranged at predetermined intervals.

And the said No. 10-516 (F side in FIG. 1) is long,
Although the 20th-ra 17 (upper side in FIG. 1) is shorter, the cores of the 10th-ra 16 and the 20th-ra 17 are arranged on the same axis.

Further, a space 18 having a predetermined width g is formed between the 10th-ra 16 and the 20th-ra 17.

The width j of this space 18 is such that even if a mold to be replaced is placed on the 10th-516 and 20th-ra 17, it will not fall into the space.

The motor 3 is provided at a mid-height position of the machine frame 2, and a chain boiler 19 is directly connected to the shaft of the motor 3.

Further, the first shaft 5 is rotatably supported by a bearing 2o at a position higher than the motor 3 in the machine frame 2 of the space 18, and on one side of the first shaft 5, the Cheno wheel 1
The transmission wheel 4 having a diameter larger than that of the transmission wheel 9 is fixed. Then, this transmission wheel 4 is placed in the 10th-51st position within the space 18.
6, and the outer diameter portion is provided at a position lower than the 10th roller 16, so that there is no problem with the movement of the object placed on the roller.

When the motor 3 is driven, the transmission wheel 4 is rotated through the chain wheel 19 and the chain 21, and the first shaft 5 is rotated.

The other side 5a of the first shaft 5 is attached 12i1 to one end of a first link 6 of an appropriate length, and a bearing 22 provided at the other end of the first link 6 is attached to a bearing 22 at the middle of the second shaft 7. The portion 7a is rotatably fitted.

Further, one side of the second shaft 7 is rotatably fitted into a bearing 23 provided at one end of the second link 8, and a bearing 24 provided at the other end of the second link 8 is rotatably fitted to a bearing 23 provided at one end of the second link 8. The middle portions of the three shafts 9 are rotatably fitted.

The engagement member 10 is fixed to the other side of the third shaft 9 to engage with and fix the die to be replaced.

This engaging member 10 includes an actuator 10a and a pin 10b that can be freely retracted and retracted by the operation of the actuator 10a.
It is made up of.

Then, the actuator 10a is activated to insert the pin 10b from below into the pin hole 26a of the connecting piece 26, which is attached to the mold 25 so as to have a lower surface lower than the mold, thereby engaging the mold 25. It is supposed to be done.

The rotation regulating means 11 of the second shaft 8 is located inside the machine frame 2,
A first sprocket 27 that is fixed to the supporting portion of the first shaft 5 and is concentric with the first shaft 5, a second sprocket 28 that is provided at the other end of the second shaft 7, and a second sprocket 28 that is wound around the first sprocket 27. Cheno 29
It is composed of etc.

Therefore, the rotation of the first shaft 5 causes the first link 6 to
When rotating around the first shaft 5, the second sprocket 28 moves in sync with the rotation of the first link 6, but since the first sprocket 27 is fixed, the chain 29, the first sprocket, and the The meshing position of 27 only moves by the amount of the rotary valve, and the rotation range of the second shaft 7 is restricted.

The rotation regulating means 12 of the third shaft 9 is connected to the second link 8.
A third sprocket 3o provided on the first link 6 facing the side and concentric with the second shaft 7, a fourth sprocket 31 provided on the other side of the third shaft 9, and a chino 32 wound around the third sprocket 3o.
The rotation range of the third shaft 9 is restricted similarly to the rotation restriction means 11 described above.

The chenos 29 and 32 are provided with adjustment devices 33 and 34 that are pivotally supported at intermediate portions of the first link 6 and the second link 8, respectively, for tension adjustment.

Further, the molding machine is provided with an overhang portion 35 at the same height as the device main body 1, and a 10th line 16 similar to the device main body 1.
, the 20th-ra 17, and the width 1 of the space 18 are provided.

Next, the effect will be explained.

First, the trolley 15 of the exchange mold conveying device according to the present invention is mounted next to the molding machine, and the projecting part 35 of the molding machine and the main body 1 of the machine are aligned.

Next, the mold 25 taken out from inside the molding machine is placed in the overhanging part 35.
The connecting piece 26 is attached to the lower part of the mold 25 in this state.

At the same time, the motor 3 in the main body 1 of the device is driven, and the transmission wheel 4 is driven from the directly connected chain wheel 19 via the chain wheel 21.

As a result, when the first link 6 fixed coaxially with the transmission wheel 4 is rotated and the second link 8 is moved in a direction approaching the connecting piece 26, the first link 6 and the second link 8 are 2
When the engaging member 10 extends and reaches the bottle hole 26a at the bottom of the connecting piece 26 while being restricted from rotating by the shaft 7 and the third shaft 9, the actuator 10a is actuated to remove the bottle 1.
0b is raised, thereby connecting the connecting piece 26 and the engaging member 10.
engage and become one.

When the first link 6 is reversed and retreated from this state, the second link 8 is bent and retreated from the first link 6 at the second shaft 7, and the engagement member 10 is moved backward from the first link 6. 6. As the second link 8 moves, it moves toward the center within the space 18.

Therefore, the mold 25 has the 10th-ra 16 of the overhanging portion 35,
and from the 20th line 17 to the 10th line 16 of the device main body 1
, and on the 20th-ra 17, and according to the movements of the first link 6 and the second link 8, the mold can be moved to a predetermined position at a fast conveyance speed of 10''n+in.

Similarly, if there is a mold to be used next in the apparatus main body 1, the mold can be fed to the molding machine by moving it from the main body 1 in the reverse operation to the above.

The above explanation is based on the case where the molding machine is on the left side in FIG. 1, but the mold can be replaced in the same way when the molding machine is on the right side or on both the left and right sides.

However, if the first shaft 5 is located on both the left and right sides, it is necessary to make the first shaft 5 symmetrical with respect to the longitudinal center of the trolley 15.

Note that the engagement between the engaging member and the connecting piece attached to the mold is explained in the case of the bottle 10b and the bottle hole 26a in this embodiment, but a jaw part is formed on the connecting piece, and this jaw part A hook that engages with the mold jaw may be provided on the third shaft 9 side, and an actuator may be provided for releasing the engagement between the hook and the mold jaw from the molding machine side.

Further, the rotation regulating means 11.1 for the second shaft 7 and the third shaft 9
2, the case of sprocket and chain was explained, but in this case, the first sprocket 27 and the second sprocket 28
The ratio of the number of teeth between the third sprocket 30 and the fourth sub-ocket 31 is preferably 1:2.

In addition to the sprocket and the chino, the rotation regulating means may be a bobbin, a belt, a wire, or the like, or may be of a gear type as shown in FIGS. 7 to 9 as another embodiment.

Components that are common to the present embodiment described above will be described using the same reference numerals.

That is, a transmission wheel 4 is fixed to one side of a first shaft 5 whose intermediate portion 5b is rotatably supported via a bearing 20 on the machine frame 2, and a transmission wheel 4 is fixed to the other side 5a. 1 is fixed to one end of the link 36.

An intermediate portion 37a of the second shaft 37 is rotatably fitted into the bearing 22 provided at the center of the first link 36.

Further, one side of the second shaft 37 is rotatably fitted into a bearing 39 provided at one end of the second link 38, and a bearing 40 provided at the other end of the second link 38 is rotatably fitted to a bearing 39 provided at one end of the second link 38. The middle portions of the three shafts 41 are rotatably fitted.

The engagement member 10 is fixed to the other side of the third shaft 41 to engage with and fix the die to be replaced.

Here, the rotation restricting means 42 of the second shaft 37 is fixedly installed in the support portion of the first shaft 5 in the machine frame 2, and is connected to a first gear 44 concentric with the first shaft 5 and a second shaft. 37 and a second gear 45 provided at the other end of the gear 37, a plurality of gears 46, 46. ... are provided, and each shaft of the gear 46°46, ... is 47.47.・
... are cantileverly fixed to the first link 36, and the respective shafts 47°47, ... and the gears 46, 46.・
There are bearings 48, 48. It is rotatably attached via...

Therefore, due to the rotation of the first shaft 5, the first link 36
When oscillates, the second gear 45, which is integral with the second shaft 37, rotates and each tooth lm46, 46. However, since the first gear 44 is fixed, the rotation range of the second gear 45 is ultimately limited, and the rotation of the integral second shaft 37 is restricted.

The rotation restricting means 43 of the third shaft 41 is arranged so that the second link 38
A third gear 49 provided on the first link 36 facing the second shaft 37 and concentric with the second shaft 37 and a fourth gear 50 provided on the other side of the third shaft 41 are in mesh with each other. A plurality of gears of the same size 51.51. ... are provided, and each shaft 52, 52, of the gear 51, 51, ... is provided.・・・
. is fixed to the second link 38 in a cantilever manner, and each shaft 52.52, . . . and the gear 51.51.・・・
・Between bearing 53.53. It is rotatably attached via...

Therefore, similarly to the case of the second shaft 37, the rotation range of the third shaft 41 is restricted by the rotation restriction means 43.

The operation of replacing the mold according to the other embodiments shown in FIGS. 7 to 9 is completely the same as that of the present embodiment described above.

〔Effect of the invention〕

As explained above, the present invention provides an exchangeable mold conveyance device for an injection molding machine, etc., in which a first link driven by a motor or the like is provided on the machine frame of the conveyance device body, and the first link and the second link are connected to each other. The third shaft at the tip of the second link is provided with an engaging member that engages with the mold, and further includes a rotation regulating means for regulating the rotation of the second shaft and the third shaft. They are installed between the first and second shafts, and between the second and third shafts, making it easy to carry the mold into and out of the molding machine. The link mechanism described above not only makes it possible to increase the conveyance speed to 10"/1n (1n), but also to ensure reliable deceleration at the incoming and outgoing limits. The time required for replacement is short and can be done safely, and since the structure is simple, it can be provided at low cost.

[Brief explanation of drawings]

FIG. 1 is a plan view of an exchange mold conveying device for an injection molding machine or the like according to the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a side view of FIG. 1, and FIG. 5 is an enlarged front view of FIG. 4, FIG. 6 is a partially cutaway plan view of FIG. 5, and FIG. 7 is a front view of another embodiment. 8 is a cutaway plan view of FIG. 7, and FIG. 9 is a cutaway side view of FIG. 7. 1...Device body, 2...Machine frame, 3...Motor, 4
... Transmission wheel, 5... First shaft, 6... First link,
7... Second shaft, 8... Second link, 9... Third shaft, 1o... Engaging member, 11.12... Rotation regulating means, 25... Mold, 36...1st link, 37...
Second axis, 38... Second link, 41... Third axis, 4
2.43... Rotation regulating means. Applicant's agent Kiyoshi Inomata Figure 1 Figure 3

Claims (1)

[Claims] In an exchange mold conveying device such as an injection molding machine, a first shaft is rotatably provided in the machine frame of the machine body, and a transmission wheel driven by a motor, etc. in the machine frame is fixed to one side. , the other side of the first shaft is fixed to one end of the first link, the middle part of the second shaft is rotatably fitted to the other end of the first link, and the one side of the second shaft is fixed to one end of the first link. The second link is rotatably fitted to one end of the second link.
The middle part of the third shaft is rotatably fitted to the other end of the link,
An engaging member for a mold to be replaced is fixed to one side of the third shaft, and a portion of the machine frame that supports the first shaft and the other side of the second shaft is fixed. An injection molding machine, etc., characterized in that rotation regulating means for the second and third shafts are provided between the other end of the first link facing the second ring and the other side of the third shaft, respectively. Exchange mold transport device.