JP3449540B2 - Small injection molding machine with casters - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a wagon type caster which can be installed by assembling all the devices and equipment necessary for injection molding inside and outside the machine base and can be moved to any place by human power and installed. The present invention relates to a small injection molding machine.

In a conventional small-sized injection molding machine, even if the injection device and the mold clamping device are downsized, the machine base is formed larger than the injection device and the mold clamping device because the installation place of the hydraulic pump and the like is secured. Since the machine base is also simply a miniaturized version of the normal structure, even if everything including the mold is made smaller and lighter, it can still be lifted by a crane and moved or installed as before. there were.

Further, the inside of the machine base is used for accommodating a control device, a mold temperature controller, and the like to make the injection molding machine compact, and at the same time, electric wheels are attached to the machine base so that the injection molding machine can be moved. Although the machine has been developed in part, this conventional technology requires the guide rail laid on the floor board to be indispensable, and once installed, the guide rail is restricted to move in the direction of the guide rail. It was something that could not be moved and re-installed.

Furthermore, since all of the plurality of electric servomotors for driving the injection device and the mold clamping device are vertically mounted on these devices, the height of the molding machine becomes unnecessarily high, and Although it was intended to make the injection molding machine compact by utilizing it, it was not possible to make it compact so that it could be easily moved.

The present invention was conceived to solve the above problems in an injection molding machine, and its purpose is to:
The machine base is formed of a tall box with a rectangular planar shape, and the inside of the machine base and the upper surface of the machine base are used to make the injection molding machine more compact than ever, and also by the use of casters An object of the present invention is to provide a new small-sized injection molding machine configured to be easily moved like a wagon.

Further, according to the present invention, either hydraulic pressure or electric power can be adopted as the drive source of the injection molding machine, and the drive means by them can be incorporated in the machine base together with the mold temperature controller. Another object of the present invention is to provide a new compact injection molding machine which can be constructed without further changing the size of the machine base.

According to the present invention having the above-mentioned object, the machine base is formed of a tall box-shaped body having a rectangular plane shape, and casters are attached to the bottom surface of the box-shaped body so that the machine base can be moved and installed manually. , An injection device and a mold clamping device, which use hydraulic power as a drive source, are installed in the longitudinal direction on the upper surface of the machine base, and in the machine base below the mold opening position at approximately the center of the front plate of the machine base. A small injection molding machine with casters that accommodates the mold cooling means and mold temperature controller inside the machine base while opening the molded product drop port of the placed shooter. In addition to partitioning, the inside of the machine base under the injection device is partitioned into a storage chamber by a vertical partition plate to accommodate the control device, and the chiller unit cooler and water of the mold cooling means are placed on the floor plate below the partition plate. Tank and cooling water pressure pump, and the above mold And a hydraulic adjuster is installed on both sides of the shooter on the partition plate, and a hydraulic pump and an oil tank of the hydraulic drive means are installed and accommodated together with the valve device of the hydraulic circuit. The mold clamping device is connected by a hydraulic circuit.

Further, according to the present invention, the machine base is formed of a tall box-shaped body having a rectangular planar shape, and casters are attached to the bottom surface of the box-shaped body so that the machine base can be moved and installed manually. An injection device that uses electricity as a drive source and a mold clamping device are installed in the longitudinal direction on the upper surface of the machine base, and are arranged in the machine base below the mold opening position at approximately the center of the front plate of the machine base. In a small injection molding machine with casters that accommodates mold cooling means and mold temperature controller inside the machine base while opening the molded product drop port of the shooter, the inside of the machine base is molded by a partition plate from the center. An electric servomotor for injection, an electric servomotor for metering, and an electric servomotor for nozzle touch that move together with the injection device into the upper storage chamber on the injection device side by forming the clamping device side into a plurality of storage chambers that are divided into upper, lower, left, and right. In the lower chamber It is installed and stored on the floor plate, and the water tank of the mold cooling means is installed on the partition plate at the center corner in the upper storage room below the mold clamping device, and the electric motor for mold clamping and the electric servo for ejector are installed. It is housed together with the motor, and the chiller unit cooler of the mold cooling means and the mold temperature controller are installed and housed on the floor of the lower housing chamber.

In such a structure, all the devices and equipment as the injection molding machine are collectively provided on the machine base that can be moved by the casters, so that the installation place need only secure the installation space of the machine base. In addition, when moving, it is easy to move manually without being restricted by the direction unlike conventional small-sized injection molding machines.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, 1 is a machine base, 2 is an injection device installed on the upper surface of the machine base, 3 is a mold clamping device, and both of them are covered by a cover 4. The injection device 2 has a screw diameter of 14 mm in the heating cylinder and an injection capacity of 6.
It is about 2 cubic meters. Further, the mold clamping device 3 is a small one having both a mold clamping stroke and a minimum mold thickness of 110 mm and a tie bar interval of about 102 mm.

The machine base 1 has a length of 1425 mm and a height of 11
00 mm wide, 490 mm wide, made up of a rectangular box with a tall planar shape, casters 5 are attached together with stand members 6 at the four corners of the bottom of the box, and the machine stand 1 itself serves as a transfer stand. It is designed to serve as a dual purpose.

As shown in FIG. 1 and FIG. 5, the injection device 2 and the mold clamping device 3 are installed in the longitudinal direction so as to be offset toward the non-operating side of the upper surface of the machine base and thereby to be installed on the upper surface of the machine base. The operation side is a work space 30 for die replacement and maintenance. Further, a drop port for the molded product of the shooter 21 disposed in the machine base below the mold opening position is opened at approximately the center of the front plate 1a of the machine base 1, and a side surface of the machine base 1 on the injection device side. A pusher 22 is attached to the upper part.

Inside the machine base 1, there is a certain degree of difference between a molding machine in which the drive source is hydraulic and a molding machine in which the drive source is electric. In the hydraulic molding machine, as shown in FIGS. 2 and 3,
It is divided into upper and lower parts by a horizontal partition plate 7, and the inside of the machine base under the injection device is further separated by a vertical partition plate 8 in the storage chamber 10.
The control device 9 is housed in a partition.

On the bottom plate 11 below the partition plate 7, a chiller unit cooler 12 for mold cooling means and a water tank 1 are provided.
3 and cooling water pressure pump 14, and mold temperature controller 15
The power cord reel 16 is installed and accommodated. Further, on both sides of the shooter 21 on the partition plate 7, a hydraulic pump 17 of a hydraulic drive means and an oil tank 18, together with a valve device 20 of a hydraulic circuit 19 connecting them, the hydraulic pump 17 is located below the injection device. The oil tank 18 is installed and accommodated under the mold clamping device, and its hydraulic drive means is connected to the injection device 2 and the mold clamping device 3 by a hydraulic circuit 19.

Numeral 23 is a viewing window of the water meter of the chiller unit cooler 12, and numeral 24 is a switch installation portion which is provided at a portion of the accommodation chamber 10 of the front plate 1a. Reference numeral 25 is a hopper, and 26 is a monitor device for the controller.

FIG. 6 and FIG. 7 show the case of an electric molding machine, in which the injection device 102 and the mold clamping device 103 on the machine base 1 drive means for driving a DC or AC electric servomotor. The ball screw and the nut member having a normal structure convert the rotary motion of the electric servomotor into a linear motion to inject and measure the resin, and open and close and close the mold.

The inside of the machine base 1 of this electric molding machine is also
Similar to the hydraulic molding machine shown in FIG. 2 and FIG. 3, the horizontal partition plate 7 and the vertical partition plate 8 partition vertically and horizontally. The device side is formed in a plurality of storage chambers by moving the device up, down, left and right. In addition, since the electric molding machine does not require an oil tank and a hydraulic valve device, the injection electric servomotor 104 and the metering motor are provided in the upper housing chamber 27 on the injection device side among the upper housing chambers in which they are housed. The electric servomotor 105 and the electric servomotor 106 for nozzle touch are accommodated, and the electric servomotor 10 for mold clamping is housed in the upper accommodation chamber 28 on the mold clamping device side.
7. The electric servomotor 108 for ejector is accommodated.

Of the above electric servomotors, the injection electric servomotor 104, the weighing electric servomotor 105,
Each electric servomotor of the nozzle touch electric servomotor 106 is a bracket connected to a slidable base 109 below the main body of the injection device, although details thereof are omitted so that the electric servomotor moves back and forth together with the injection device 102. It is attached to and housed in the machine base.

Further, the mold clamping electric servomotor 107 does not move, so it is attached and housed in the bracket plate 110 connected to the mold clamping device 103. However, the ejector electric servomotor 108 is connected to the movable plate 111. It is attached to the bracket 112 and housed so as to move together with the movable plate 111 as the mold is opened and closed.

The torque generated by each of the electric servomotors is transmitted to the injection device or the actuating device on the mold clamping device side through a timing belt wound around each pulley and the pulley on the injection or mold clamping device side. . For example, the rotational force of the electric servomotor 105 for measurement is transmitted to the pulley 113 at the end of the apparatus and becomes the rotational force of the injection screw (not shown), and the rotational force of the electric servomotor 107 for mold clamping is at the end of the mold clamping apparatus 103. The mold clamping force is transmitted to the pulley 114.

The three electric servomotors such as the injection electric servomotor 104 in the upper accommodation chamber 27 are connected to the injection device 10.
The space for accommodating other devices is lost in the upper accommodating chamber 27 as it moves in the upper accommodating chamber 27 as the mold is moved forward and backward, but the partitioning of the upper accommodating chamber 28 is made by partitioning the mold accommodating device lower. Since an installation space is created in the central corner of the plate 8 side, the water tank 13 of the mold cooling means is installed and accommodated on the partition plate 7 in that installation space, and the mold cooling is provided in the lower accommodation chamber below the water tank 13. The chiller unit cooler 12 and the cooling water pressure pump 14 of the means are accommodated on the floor plate 11 side by side with the mold temperature controller 15. Further, the control device 115 and the power cord reel 16 are installed and accommodated on the floor plate 11 in the lower accommodating chamber 29 on the injection device side. In addition,
Reference numeral 115a indicates a servo amplifier.

As described above, all the devices and equipment necessary for resin injection molding, including the driving means of the molding machine installed on the machine base, are housed inside the machine base 1, and the casters 5 of the machine base are accommodated. In the small-sized injection molding machine of the present invention which is provided with a movable portion, it is possible to freely move in any direction by holding the pushing hand 22 and pushing it. Unlike a molding machine, the machine is not limited in direction, and can be easily transferred by a female worker who is less powerful than a male worker, and can be easily installed at a predetermined place by unwinding the stand member 6. it can.

Further, since all the devices and equipment necessary for injection molding are provided inside and outside of the machine base 1, equipment for cooling and controlling the temperature of the mold is not required, so running cost is not incurred and installation is not required. The installation space for the machine base 1 is sufficient, and since the molding machine is all driven inside the machine base, there is almost no contamination around it, and since the mold temperature can be adjusted inside the machine base as well, It is possible to easily replace a mold with a well-tuned mold. Furthermore, since the operation side of the machine base is the work table 30, it is possible to easily carry out work such as maintenance or mold replacement by placing a jig or a mold on the work table 30.

[Brief description of drawings]

FIG. 1 is a perspective view of a compact injection molding machine with casters according to the present invention in which hydraulic pressure is used as a drive source for an injection device and a mold clamping device.

FIG. 2 is a front view showing the machine frame of the same in a longitudinal section.

FIG. 3 is a rear view showing the machine base in a longitudinal section with the cover of the injection and mold clamping device removed.

FIG. 4 is a right side view of FIG.

FIG. 5 is a plan view of the same.

FIG. 6 is a front view showing a vertical section of a machine base with a cover removed in a compact molding machine when electricity is adopted as a drive source for an injection device and a mold clamping device.

FIG. 7 is a left side view showing a vertical section of the machine stand of the same.

[Explanation of symbols]

1 machine 2 injection device 3 Mold clamping device 4 cover 5 casters 7 Horizontal dividers 8 Vertical dividers 9 Control device 10 Control room 11 floor board 12 Chiller unit cooler 13 water tank 14 Cooling water pressure pump 15 Mold temperature controller 16 power cord reel 17 Hydraulic pump 18 oil tank 19 Hydraulic circuit 20 valve device 21 Molded shooter 22 pusher 102 Electric injection device 103 Electric mold clamping device 104 Electric servo motor for injection 105 Electric servo motor for back pressure control 106 Electric servo motor for nozzle touch 107 Electric servomotor for mold clamping 108 Electric servo motor for ejector 115 Control device

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Laid-Open No. 8-1721 (JP, A) Actually published 62-53124 (JP, U) Nikkan Kogyo Shimbun, July 24, 1998, page 10 (58) ) Fields surveyed (Int.Cl. ⁷ , DB name) B29C 45/00-45/84

Claims (2)

(57) [Claims] 1. A machine base is formed of a tall box-shaped body having a rectangular planar shape, and a caster is attached to the bottom surface of the box-shaped body so that the machine base can be moved and installed manually. An injection device having a hydraulic power source as a drive source and a mold clamping device are installed on the upper surface in the longitudinal direction, and substantially at the center of the front plate of the machine base.
While opening the molded product drop port of the shooter arranged in the machine base below the mold opening position, in a small injection molding machine with casters that accommodates mold cooling means and mold temperature controller in the machine base, The inside of the machine base is divided into upper and lower parts by partition plates, and the inside of the machine base end on the lower side of the injection device is divided into an accommodating chamber by vertical partition plates to accommodate the control device, and on the floor plate below the partition plate. A chiller unit cooler for mold cooling means, a water tank, a cooling water pressure pump, and the mold temperature controller are installed and housed, and a hydraulic pump and an oil tank for the hydraulic drive means are provided on both sides of the shooter on the partition plate. Is installed and housed together with a valve device of a hydraulic circuit, and the hydraulic drive means, the injection device, and the mold clamping device are connected by a hydraulic circuit. 2. The machine base is formed of a tall box-shaped body having a rectangular planar shape, and casters are attached to the bottom surface of the box-shaped body so that the machine base can be manually moved and installed. An injection device having an electric drive source and a mold clamping device are installed on the upper surface in the longitudinal direction, and substantially at the center of the front plate of the machine base.
While opening the molded product drop port of the shooter arranged in the machine base below the mold opening position, in a small injection molding machine with casters that accommodates mold cooling means and mold temperature controller in the machine base, An electric servomotor for injection that moves from the center of the machine base into a plurality of storage chambers by partitioning the mold clamping device side into lower, upper, lower, left and right parts from the center and moves with the injection device in the upper storage chamber on the injection device side. , The electric servomotor for metering and the electric servomotor for nozzle touch are installed by accommodating the control device on the floor plate in the lower accommodating chamber, and the water tank of the mold cooling means is provided in the upper accommodating chamber below the mold clamping device. It is installed on the partition plate in the center corner and accommodated with the electric servomotor for mold clamping and the electric servomotor for ejector, and the chiller unit cooler of the mold cooling means and the mold temperature controller are installed on the floor of the lower chamber. Set up Small injection molding machine with casters characterized by being housed.