JP3098445B2 - Nozzle touch device for multiple mold clamping devices - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle touch device of an injection device for performing injection molding by laterally moving an injection device with respect to a plurality of mold clamping devices arranged side by side on a machine base.

[0002]

A conventional nozzle touch device using hydraulic pressure as a driving source is disposed between the injection device and the machine base such that the machine side on which the injection device is installed acts as a reaction force of nozzle touch. Consisting of a hydraulic cylinder. There are two types of this arrangement, one of which is provided over the front of the injection device and on the machine base, and the injection device is moved forward by a pulling force to make nozzle contact with the mold clamping device. The other is the opposite case where the pressing force is applied, and a hydraulic cylinder is provided for nozzle touching over the rear part of the injection device and on the machine base.

[0003] In any of these cases, it is possible to employ a molding machine that performs molding by moving the injection device laterally with respect to a plurality of mold clamping devices juxtaposed on the machine base. Since the mounted base receives the reaction force of the nozzle touch, the base needs to have sufficient rigidity to withstand the reaction force. In addition, due to the increase in size of the molding machine, if the machine on the mold clamping device side and the machine on the injection device side are separated, and both are connected and integrated, the strength of the connection part must also be required. become.

[0004] For this reason, in a molding machine in which an injection device is laterally moved with respect to a plurality of mold clamping devices to perform molding, the structure of the machine base, which should be simple, is complicated, and this is one factor in cost increase. ing. Moreover, such a nozzle touching means is effective only when the machine base is integrated, and in terms of the configuration of the molding machine, the machine bases on the mold clamping device side and the injection device side are arranged separately. It is difficult to adopt in such cases.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to impart a reaction force of nozzle touch to a machine side of a mold clamping device so that the rigidity of the machine body of the injection device is particularly improved. It is not required, and the function can be exhibited even if the mold clamping device side and the injection device side machine are separate bodies, and the nozzle touch device can be changed smoothly with the lateral movement of the injection device. Another object of the present invention is to provide a nozzle touch device having a new configuration.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a plurality of mold clamping devices are arranged side by side on a machine base, and an injection device on the machine base is moved laterally with respect to the mold clamping devices to individually form nozzles. When performing the touch, connect the piston rod side to the front part of the retractable injection device on the horizontal slide base so that the machine on the mold clamping device side acts as a reaction force of nozzle touch. , On the support base in the front part of the horizontal slide base, while mounting the metal fittings for each of the mold clamping devices on the machine on the mold clamping device side, and connecting the metal fittings that can be disengaged from the lateral direction with respect to the metal fittings. Provided at the end of the cylinder body, the cylinder body is axially movably mounted on the support base by a side holder, and the front and rear surfaces of the holder are elastically supported by a pressure-adjustable spring member. , The position of the connection bracket with respect to the above-mentioned bracket Consists configured to enable decided, is that.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawing, reference numeral 1 denotes a machine base on which a pair of vertical mold clamping devices 2 and 3 are arranged on the upper surface. Reference numeral 4 denotes a machine base on which one injection device 5 is horizontally mounted on the upper surface so as to be able to move laterally, and is located at a required distance from the machine base 1 on the mold clamping device side.

The injection device 5 is mounted on an upper surface of a slide base 6 which moves laterally on the machine base 4. The horizontal slide base 6 is configured to fit with lateral guide rails 7, 7 laid on the front and rear of the upper surface of the machine base 4 and to move laterally with the injection device 5 by rotation of the screw shaft 8. The injection device 5 is fixed to a vertical slide plate 9 provided on the upper surface of the upper surface 6 so as to be able to move forward and backward with respect to the mold clamping devices 2 and 3.

The injection device 5 and the machine base 1 on the mold clamping device side.
In between, a cylinder 12 for nozzle touch by a hydraulic cylinder is provided with a piston rod 13 on the front of a vertical slide plate 9 integrally connected to the injection device 5 so that the machine base 1 acts as a reaction force for nozzle touch. And the cylinder body 14 is mounted on a front support base 6 a extending from the horizontal slide base 6.

The end of the cylinder body 14 facing the mold clamping device side can be laterally disengaged from a T-shaped fitting 15 provided on the machine base 1 for each of the mold clamping devices 2 and 3. A U-shaped connecting bracket 16 having engagement claws on the upper and lower ends is provided. The cylinder body 14 has holders 17 on the side and the opposite end of the connecting fitting 16, and guide blocks 18 projecting from lower portions on both sides of the holder 17 are attached to guide blocks 19, which are mounted on both sides of the upper surface of the support base 6 a. The cylinder main body 14 is mounted on the support base 15 so as to be movable in the axial direction while being housed inside the inside 19.

On the front and rear surfaces of the guide pieces 18, 18 on both sides of the side holder 17, coil-shaped spring members 20, 2 are provided.
The pressing pins 21 and 21 pressed by 0 are in contact with each other, and the cylinder body 14 is supported on the supporting base 15 by the pressing pins 21 and 21 via a holder 17 so as to be movable in the axial direction.

The spring members 20, 20 are housed together with a compression pin 24 in a cylinder 23 provided on a support base in parallel with the cylinder body 14 by a member 22, and the pressing pin is moved from the front of the cylinder 23. 21 is elastically pressed by the spring member 20 and protrudes. The compression pin 24
Abuts on a screw shaft 25 screwed into the rear end of the cylinder 23, and adjusts the spring pressure of the spring member 20 by the longitudinal movement of the compression pin 24 due to the rotation of the screw shaft 25. The position of the connection fitting 16 at the end of the main body can be determined.

The relative position of the receiving fitting 15 and the connecting fitting 16 is set in advance so that they are fitted with a required clearance (about 5 mm) so that they do not rub against each other when the injection device 5 is disengaged or disengaged by lateral movement. This positioning is determined, and can be easily performed by the position movement caused by the change of the resilient force of the spring members 20 that support the holder 17 by elastic pressure.

In the cylinder body 14 thus elastically supported by the holder 17 so as to be freely movable in the axial direction, after the connecting metal fitting 16 at the end is fitted with the receiving metal fitting 15 on the machine base 1, the nozzle touch is performed. Therefore, when the piston rod 13 is contracted by hydraulic pressure, a reaction force acts on the cylinder body 14, and the cylinder body 14 is compressed by the holder 17 to retreat the spring member 20 on the rear surface side.
This retreating dimension is limited to the above-mentioned clearance in which the connecting fitting 16 at the end comes into contact with and engages with the receiving fitting 15, and the injection device 5 is pulled toward the mold clamping device by the further reduction of the piston rod 13, thereby completing the nozzle touch.

Conversely, when the injection device 5 is retracted to the original position by extending the piston, the reaction force against the cylinder body 14 is also released, so that the cylinder body 14 is restored to the compressed state of the rear side spring member 20. When pushed back by the force, the connecting fitting 16 is again positioned with the receiving fitting 15 while maintaining the clearance. For this reason, since the detachment of the metal fitting 15 and the connecting metal 16 by the lateral movement is performed while maintaining the clearance, the engagement and disengagement is performed smoothly without friction.

Further, the reaction force of the nozzle touch is received by the machine 1 on the mold clamping device side, so that the rigidity of the machine 4 on the injection device side is not required. The nozzle touch can be performed even in a case where the nozzle is touched. Furthermore, even if the molding machine becomes large, the machine base structure on the side of the injection device does not become particularly complicated, and the lateral movement of the injection device and the nozzle touch with respect to a plurality of mold clamping devices can be easily performed. The change of the device can be performed smoothly.

[Brief description of the drawings]

FIG. 1 is a plan view of one embodiment of a nozzle touch device for a plurality of mold clamping devices according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view showing a part of the elastic pressure supporting portion of the cylinder body as a cross section.

FIG. 4 is a longitudinal sectional view of a holder portion.

[Explanation of symbols]

 Reference Signs List 1 Machine base on mold clamping device side 2, 3 Mold clamping device 4 Machine base on injection device 5 Injection device 6 Horizontal slide base 9 Vertical slide plate 12 Cylinder for slide 13 Piston rod 14 Cylinder main body 15 Receptacle 16 Connection fitting 17 Holder 20 Spring members

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-8-300408 (JP, A) JP-A 8-281705 (JP, A) JP-A 8-118425 (JP, A) 100458 (JP, A) JP-A-4-339619 (JP, A) JP-A-8-318545 (JP, A) JP-A-8-132471 (JP, A) JP-A-5-53917 (JP, U) 63-128015 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B29C 45/00-45/24

Claims (1)

(57) [Claims] When a plurality of mold clamping devices are arranged side by side on a machine base and an injection device on the machine base is moved laterally with respect to the mold clamping devices to individually perform nozzle touch, a machine on the mold clamping device side is used. The nozzle touch cylinder is connected to the front of the retractable injection device on the horizontal slide base with the piston rod side so that the table acts as a reaction force of the nozzle touch, and the nozzle touch cylinder is mounted on the support base at the front of the horizontal slide base. On the other hand, a metal fitting is arranged for each mold clamping device on the machine base on the mold clamping device side, and a coupling metal that can be disengaged from the lateral direction with respect to the metal fitting is provided at an end of the cylinder body. The main body is mounted on the support base movably in the axial direction by the holder on the side, and the front and rear surfaces of the holder are elastically supported by the spring members capable of adjusting the pressure, enabling the positioning of the connecting bracket with respect to the receiving bracket. It is characterized by comprising Nozzle touch device for a plurality of mold clamping devices.