JPS5952628A - Replacing device for heating cylinder unit in injection molding machine - Google Patents

Abstract

PURPOSE:To enable to speedily replace a heating cylinder, by a method wherein a liftable body having a prescribed lowering limit and provided at a lower part thereof with an engaging part for a suspending part of a heating cylinder fitting block is supported by a traveling body placed on rails fixed to a building. CONSTITUTION:Rollers 22, 22 of the traveling body 23 are made to roll on the rails 21, 21 fixed to the building, the traveling body 23 is stopped at a position immediately upstream of an injection molding machine 41, the liftable body 26 is lowered and is stopped at a position determined by a stopper 28, and the traveling body 23 is moved forward, whereby the engaging part 29 is engaged to the suspending part 30 of the heating cylinder fitting block 15. When the liftable body 26 is lifted up by releasing the engagement of the block 15 with an injection blacket 12 and a threaded shaft 17, the block 15 is disengaged, and is then fed to a stand-by position by moving the traveling body 23. Subsequently, a spare heating cylinder fitting block is fitted to the injection molding machine 41 in the reverse sequence. Accordingly, a heating cylinder unit can be replaced stably and speedily, and operating efficiency can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heating cylinder unit replacement device in an injection molding machine.

When you want to clean a single cylinder in an injection molding machine to change the color or resin, the conventional methods are to use a large amount of wood++i for purging, or to disassemble the cylinder, pull out the screw, and clean the cylinder and screw. was being carried out. However, the former method wastes a large amount of greaseproofing material and goes against the grain, while the latter method requires a long downtime of the injection molding machine, lowering the operating rate and increasing labor costs.

At the same time, a heating cylinder with a built-in screw is attached to the injection bracket of the injection molded body, and a fitting recess is provided in the injection bracket, and a heating cylinder mounting block with the heating cylinder integrally attached is fitted into the fitting recess. An injection molding machine was also proposed in which the heating cylinder mounting block was removably held by a tightening mechanism.

However, in the conventional method, there was a lot of blood on the chest of the injection molding machine due to the 1,400 cm heat cylinder, so the efficiency of using the floor surface was low. Furthermore, since one or more spare heating cylinder mounting blocks are prepared for one injection molding machine, the cost becomes high.

The present invention eliminates these drawbacks, and its purpose is to save labor by safely and quickly replacing the heating cylinder unit when changing colors or resins, etc., and to improve productivity by eliminating unnecessary waste of resin. An object of the present invention is to provide a replacement device for a heating cylinder unit in an injection molding machine.

The present invention will be explained below with reference to figures showing one embodiment. 1 and 2 schematically show an injection molding machine, in which an injection bracket eye 2 is attached to the upper surface of the ped l], and an injection cylinder 13 is attached to the injection bracket 12.
Heating cylinder mounting block 15 including screws 14, etc.
is the provision. The screw 14 described above is rotatably driven by being connected to a screw drive shaft 17 of a drive machine @ 16, and a running body supported via an axially oriented running rail 21) and a roller η is shown in the figure. It moves on the running rail 2J by rotating the roller z2 using an omitted electric motor. An elevating body is fixed to the lower end of the guide rod A whose upper drive is guided by the guide rod of the elevating body, and is moved up and down by a cylinder 27 attached to the top surface of the elevating body. The descent is stipulated by Natsuto's 74 stuns as 1 shift. Fitting portions 4 are formed at both lower ends of the legs of the elevating body, and are attached to the heating cylinder mounting block 15 to engage with the ejector. In the above description, the lifting body is moved up and down by the cylinder n, but the system is not limited to this, and a system using an electric motor, wire, and chain, or a rack and a binion may be used. In addition, it is assumed that the traveling rail 2 is fixed between the walls of the building.
In addition, it may be fixed by appropriate means such as hanging from a support or ceiling.

Next, the operation of the device of the present invention will be explained with reference to FIGS. 4 and 3. After stopping the first traveling body 23A just in front of the injection molding machine 41, the lifting body is stopped at 1/27K.
When lowered further, it will stop at the specified position at σ] where stopper 4 is located. In this state, when the traveling body 23A'i moves forward (moves to the right in Figure m4), the fitting portion 29 of the elevating body engages with the starting point (capital) of the heating cylinder mounting block 15A. Next, the heating cylinder mounting block 15A and the injection platen) 1
2 and the screw 14 and screw drive shaft 17
Release the connection with. If the elevating body 26 is raised here, the heating cylinder mounting block 15A will be moved to the injection bracket 12.
The traveling body 23A is moved forward to the standby position.

After confirming the running of the traveling body 23A described above, at the left standby position, the spare heating cylinder sanmura block 15B is installed.
7 Second running body Z (H injection molding machine 4)
Advance it to just above 1. Here, the elevating body is lowered to connect the heating cylinder mounting block 15B and the injection bracket 12, as well as the screw 14 and the screw drive shaft 17. Next, the traveling body 23B is slightly retreated to disengage the fitting portion 29 and the exit gate, and the elevating body 2.3B is moved back to its original position after raising the elevating body 2.3B. The replacement work is completed.

In the above explanation, the number of injection molding machines 41 is one, but it goes without saying that multiple machines can be installed on the bottom surface of the running rail 2.
It is Noh. In addition, although the explanation has been made with two running units, one running unit C is used to inject the injection molding machine 41 or the GHz heating cylinder mounting block 15A is removed and placed in the standby position, and then a new heating mounting block 15B is injected by the running unit C. It may also be coupled to the molding machine 41. However, with this method, the replacement time is longer than when using two traveling bodies 23A.

As described above, the heating cylinder unit replacement device in the injection molding machine of the present invention has the same structure as that of the running body fixed to the building structure and the running rail, and the running body supported via the rollers on the turning rail. An elevating body that is moved up and down by a drive source with respect to the traveling body and whose lowering limit is defined, a fitting part formed at the lower end of the elevating body, and a heating cylinder mounting block provided to engage with the rotating joint part. It is composed of 1.

For this reason, the replacement work of the heating cylinder unit in the injection molding machine becomes shorter and easier due to the use of a running body or an elevating position, and the operation rate of the injection molding machine increases, further improving productivity. Other advantages are that since the heating cylinder unit itself is replaced, there is no need to extrude using old resin, and therefore quality is saved, and the installation space for the injection molding machine can be narrow because there are no unnecessary items placed there. has.

[Brief explanation of the drawing]

1 and 2 show the general shape of an injection molding machine, FIG. 1 is a plan view, FIG. 2 is a front view, and FIGS. 3 and 4 show an embodiment of the present invention. The figure is a partially sectional front view, and FIG. 4 is a side view. Yutoga Ichihiki Mart 4shi-1shi, Ko2-・O-5,23
- Tsurochoda Jyo Applicant Toshiba Machine Co., Ltd. Figure 71 Figure 2 Figure 73

Claims (1)

[Claims] A running rail fixed to a building or the like, a running body supported via rollers on the rotating rail, and an elevating body that is moved up and down by a drive source 11 with respect to the running body and whose lower limit is defined. A replacement device for a heating cylinder unit in an injection molding machine, comprising a fitting part formed at the end of the elevating body and a hanging part preferably provided on the heating cylinder mounting block in relation to the fitting part.