KR101973979B1 - Mold continuous exchange system of a molding machine - Google Patents

Abstract

The present invention relates to a continuous mold exchange system of a molding machine which is able to significantly increase productivity by continuously cooling and drawing out in a molding process by a simple configuration and an operation method. According to the present invention, a molding method for producing a molded product continuously by alternately putting a first mold (M1) and a second mold (M2) into one molding machine (10): performs a cooling process by the second mold (M2) from the outside of the molding machine (10) while a molding process and a drawing process are performed by the first mold (M1) in the molding machine (10); and performs a cooling process by the first mold (M1) from the outside of the molding machine (10) while the molding process and the drawing process are performed by the second mold (M2) in the molding machine (10). The continuous mold exchange system of a molding machine provided by the present invention performs: a detaching process (P100) of releasing a clamping from a fixing platen (21) and a movable platen (22), to which each of molds (M1, M2) is combined, before the first mold (M1) or the second mold (M2) is transferred from the molding machine (10) to the outside; a fine spacing process (P200) of forming gaps (G1, G2) by finely retracting the movable platen (22) after the detaching process (P100); and a side transferring process (P300) of transferring the molds (M1, M2) to the outside of the molding machine (10) after the fine spacing process (P200).

Description

Mold continuous exchange system of a molding machine

The present invention relates to a continuous mold exchange system of a molding machine, and more particularly, to a continuous mold exchange system of a molding machine capable of significantly increasing productivity by allowing continuous cooling and drawing out in a molding process by a simple configuration and control method. It is about.

In general, a molding machine is intended to produce a molded product by melting, injecting, extruding, or pressing a plastic resin. A molding process is usually performed by supplying a heated molten resin material to a mold, a cooling process to cool the molded product, and a withdrawal to remove the cooled molding from the mold. The process proceeds.

However, in the related art, since the molding is performed by one mold, the cooling process is performed in a state where the molding process is located at the molding position, and thus the mold has a waiting time for cooling for a predetermined time. Since the dead time is not possible to proceed to other processes according to the productive side of the injection molding machine, there is a problem in that the productivity takes a long time because the cycle time for producing the molding is long.

Accordingly, in order to solve the above-mentioned problems, some of them are provided with a plurality of molds to reduce the cycle time. For example, as described in Japanese Patent Application Laid-Open No. 07-119012, two By alternately using the mold, the molding process is performed by the other while the cooling process is performed in one mold.

In this case, the productivity can be increased by repeating molding and cooling of the two molds alternately, but each ejection part is provided on both sides of the injection part that performs the molding process, and each mold is removed from the injection part. Due to the cooling process and take-out process, the molding waiting time at the injection part may be longer, which is not only limited to improving productivity, but also complicated device configuration and two manufacturing and maintenance on two ejection parts. It is a hassle.

Japanese Patent Application Laid-Open No. 07-119012 (December 20, 1995)

The present invention is to solve the problems as described above, the present invention can significantly increase the productivity by a control method that can minimize the waiting time in each process while using two molds alternately, and also It is to provide a continuous mold exchange system of a molding machine that can form the overall configuration and operation of the system compactly by a simple configuration and alternation method.

According to a feature of the present invention, the first mold (M1) and the second mold (M2) are alternately put on one molding machine 10 is provided to continuously produce a molding;

The molding machine 10

Molding unit 12 is provided on the casing main body 11 side to supply the resin to each of the mold (M1, M2) side, and the molding unit 12 to face each of the mold (M1) , The pressurized reciprocating means 30 operated in a horizontal direction to pressurize or depressurize the M2, and a controller 17 connected to control the operation of the pressurized reciprocating means 30, the molding unit 12 and the pressurized reciprocating means. A fixed platen (21) and a movable platen (22), each of which has a clamper (23), positioned between (30) and fixed to each of the molds (M1, M2);

Each mold (M1, M2) is

The first back plate (3) is in close contact with the fixing platen 21 so as to be fixed in a state positioned on the forming unit 12 side at the time of molding. An extended back fixed mold 1 and a second back plate 4 provided to be movable by the pressure reciprocating means 30 to face the fixed mold 1 to be in close contact with the movable platen 2 are provided. In the molding system consisting of a movable mold (2) formed on the rear surface;

The first mold (M1) and the second mold (M2) is seated on the transfer line 40 extending to the side of the molding machine 10 is provided to be moved by the transfer means 50, the molding machine ( 10) the cooling process is performed by the second mold (M2) outside the molding machine 10 while the molding process and the drawing process by the first mold (M1) in progress, the conversely in the molding machine (10) A cooling process is performed by the first mold M1 outside the molding machine 10 while a molding process and a drawing process are performed by the second mold M2;

Before the first mold M1 or the second mold M2 is transferred to the outside in the molding machine 10, the stationary platen 21 and the movable platen 22 to which the respective molds M1 and M2 are coupled. Desorption step (P100) and the clamping release from);

 After the desorption step (P100) by controlling the pressurized reciprocating means 30 by the controller 17 to finely retract the movable platen 22 from the mold (M1, M2) to the movable side gap (G1) ) And at the same time fine separation to form a fixed side gap (G2) of the mold (M1, M2) spontaneously spaced due to the release of the adhesion force according to the movable side gap (G1) on the fixed platen 21 side Step (P200);

After the fine spacing step (P200) is provided a mold continuous exchange system of the molding machine, characterized in that it comprises a side transfer step (P300) for transferring the mold (M1, M2) to the outside of the molding machine (10).

According to another feature of the invention, the conveying means 50 is a first guide roller 41 corresponding to the first back plate 3 on the fixed mold (1) side and the first guide roller 41 The second guide roller 42 which is positioned at intervals to correspond to the second back plate 4 on the movable mold 2 side is provided, and the first guide roller 41 is provided with the first back plate ( A groove 44 into which the end of 3) is inserted is formed, and the second guide roller 42 is provided with a mold continuous exchange system of the molding machine, characterized in that it is provided in the form of a drum extending in a cylindrical shape.

According to another feature of the invention, the first mold (M1) and the second mold (M2) are interconnected by a bridge (60) coupled to maintain a constant distance integrally by the transfer means (50). Provided is a continuous mold exchange system of a molding machine characterized in that the interlock.

As described above, according to the present invention, the first mold M1 and the second mold M2 are alternately added to the molding machine 10 so as to continuously manufacture the molded article, thereby increasing productivity.

In particular, the present invention is possible to increase the productivity by reducing the cycle time for producing a product by the molding process or withdrawal process is possible by the other mold (M2) while the cooling process is performed by one mold (M1). In addition, as the cooling process is performed outside the molding machine 10 in each process, there is an advantage that a compact device configuration according to the molding process and the drawing process may be implemented by one molding machine 10.

In addition, the present invention is a mold (M1, M2) even in a state where a separate configuration that can prevent the interference with the fixed platen 21 and the movable platen 22 during the transfer of the mold (M1, M2) Not only can the operation of the device be smoothly provided, but also the compactness of the device can be achieved.

In addition, the present invention is provided with a feed line 40 including guide rollers 41 and 42 corresponding to the back plates 3 and 4 of the molds M1 and M2, wherein the guide rollers 41 and 42 are grooves ( The fixed mold 1 is stably supported by the first guide roller 41 having the 44 formed thereon, and the movable mold 2 of various sizes is stably seated by the second guide roller 42 in a drum shape. There is an advantage to increase the usability.

In addition, according to the present invention, as the two molds M1 and M2 are integrally interlocked by one transfer means 50 in a state in which they are interconnected by the bridge 60, the respective molds M1 and M2 are driven separately. Compared to the configuration of the device can be formed compactly, there is an advantage that can eliminate the control hassles according to the individual operation.

1 is a block diagram showing a molding method according to an embodiment of the present invention.
Figure 2 is an operating state diagram showing the main part of the configuration according to an embodiment of the present invention
Figure 3 is a plan view showing a configuration according to an embodiment of the present invention
4 is a front view according to an embodiment of the present invention.
Figure 5 is a side view according to an embodiment of the present invention
6 is an operating state according to the configuration according to an embodiment of the present invention

The objects, features and advantages of the present invention described above will become more apparent from the following detailed description. Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 6 show a preferred embodiment of the present invention. As shown in FIG. 1, the present invention is to continuously insert the first mold M1 and the second mold M2 on one molding machine 10 to continuously manufacture a molded article. While the molding process and the drawing process are performed by the first mold M1 in the molding machine 10, the cooling process is performed by the second mold M2 outside the molding machine 10, and conversely, in the molding machine 10. While the molding process and the drawing process are performed by the second mold M2, the cooling process is performed by the first mold M1 outside the molding machine 10 to produce one molding. It is designed to increase productivity by reducing cycle time.

At this time, in the molding machine 10, the molding unit 12 for the molding process is located on one side, the discharge means 13 including an ejector for the withdrawal process is located on the other side, the discharge means 12 side The pressurized reciprocating means 30 is disposed to firmly maintain the mating state of the molds M1 and M2 during the molding process, and in the case of the cooling process, a cooling jacket is formed on the molds M1 and M2 itself. Cooling may be performed by an air or water cooling method outside the molding machine 10.

In the present invention, the two molds M1 and M2 are alternately introduced to alternately insert the mold 10 into the molding machine 10. In particular, the molds M1 and M2 are moved to the molding machine 10 for cooling after the molding process. In order to move outward, after separating the molds M1 and M2 coupled to the molding machine 10 side, the separated molds M1 and M2 are provided to be stably transported. As follows.

As shown in FIG. 2, in the molding process, each mold M1 and M2 are provided in a fixed state by the clamping unit 20, and the clamping unit 20 has end faces of the molds M1 and M2. Platens 21 and 22 in a plate shape in close contact with the platen and clampers 23 provided on the platens 21 and 22 to detachably grip the molds M1 and M2. The platens 21 and 22 correspond to the stationary platen 21 and the stationary platen 21 at a predetermined position, and are movable platens provided to be movable by the pressure reciprocating means 30. And a depressurization process P100 for separating the molds M1 and M2 from the molding machine 10 and a pressurized state of the molds M1 and M2 during the molding process between the molding process and the cooling process described above. The molds M1 and M2 are moved through a micro-spaced process P200 for retreating the pressurized reciprocating means 30 under the control of the controller 17 to release the pressure. The lateral transfer process (P300) will be written.

Specifically, in the desorption process (P100) to release the clamping operation of the clamper 23, the clamper 23 is to use a conventional configuration that the clamping operation and the release operation is automatically performed by the hydraulic operation or the like. However, as the desorption step P100 alone cannot release the state in which the platens 21 and 22 are in close contact with the molds M1 and M2, the pressurization of the pressurizing reciprocating means 30 is performed by the micro-spaced step P200. The control will be turned off.

In the fine spacing step P200 of the present invention, the movable platen 22 has a predetermined stroke (for example, to open the molds M1 and M2 in the withdrawal process) by the normal release operation of the pressurized return means 30. The retreat distance is finely retracted so as to form the gaps G1 and G2 with the molds M1 and M2 before retreating completely. The gaps G1 and G2 are formed on the movable side gap G1 and the movable side gap G1 intentionally formed as the movable platen 22 is retracted by the pressurized return means 30. Accordingly, the repulsive force such as the adhesion is released from the fixing platen 21 side to form the fixing side gap G2. Both sides of the molds M1 and M2 are platen by the gaps G1 and G2. Spaced apart from (21,22).

Here, in order to transfer the mold (M1, M2) from the molding machine 10 for the cooling process may be possible in other ways, for example, the mold (M1, M2) and platens (21, 22) as in the present invention Instead of forming gaps G1 and G2 between the dies, the molds are kept in contact with other structures (installation rollers are placed on the contact surfaces of the platens 21 and 22 or the molds M1 and M2). (M1, M2) may be taken out of the platens (21, 22), but in this case, the rollers may not move smoothly in the rolling process repeatedly, causing failure or replacement due to wear of the roller itself. In addition to the following problems, the roller itself may be added to the configuration of the device or a problem due to the complexity of the manufacturing and configuration according to the formation of the installation groove for mounting the roller in a manner such as may occur.

On the other hand, when the molds M1 and M2 are spaced apart from the platens 21 and 22 according to the control of the device, such as the micro-spaced process P200 of the present invention, the contact between the devices is completely excluded and wear or replacement thereof is performed. It is possible to prevent the problems, and at the same time to eliminate the configuration of the roller as described above to make the device compact.

On the other hand, the stroke of the movable platen 22 under the control of the pressure reciprocating means 30 may be formed in a predetermined centimeter or meter unit in consideration of the opening degree of the mold according to the shape or size of the molding in the withdrawal process. In order to move the molds M1 and M2 for the lateral transfer process P300, it is not necessary to retract the entire stroke of the movable platen 22 described above, and thus, the micro-control of the pressure reciprocating means 30 operates. It is necessary to reduce the physical or energy consumption due to the time required or unnecessary operation of the device.

As an example of the operation of the pressurized reciprocating means 30, during the forward and backward operation of the movable platen 22, at a low speed so as to enter slowly at the point of close contact between the high-speed driving section and the molds M1 and M2 so as to allow rapid running. The driving section may be formed. In the micro-spaced step (P200) and the lateral transfer step (P300) immediately before the cooling process, the vehicle may partially retreat in the low-speed driving section as described above, or the time of applying the power (operation of the device may be It is possible to operate by intermittently applying power for a short time by adjusting the connection time of the switch.

3 to 6 will be described with reference to the molding system including the configuration of the apparatus for implementing the molding method of the present invention.

As shown in Figure 3, the molding system of the present invention is connected to the transfer line 40 extending in the transverse direction with respect to the molding machine 10 extending in one direction, two molds on one side of the transfer line 40 Transfer means 50 for moving (M1, M2) is provided.

Specifically, the molding machine 10 is provided to allow the respective molds (M1, M2) to flow in and out through one side of the molding main body 11 in which the injection space is casing, the molding unit to perform a molding process on one side ( 12) is positioned, and the pressure reciprocating means 30 is disposed opposite to the molding unit 12 so as to maintain a firm state of the mold (M1, M2).

The injection unit 11 includes a hopper 14 for supplying resin, a screw 15 connected to the hopper 14 to transfer the resin in a heat-melt state, and a nozzle 16 for injecting the resin. And a fixing platen 21 on which one surface of the molds M1 and M2 is coupled to the forming unit 12 side is positioned in a fixed position, and is faced in a state spaced apart from the fixing platen 21. The movable platen 22 is positioned to be movable by the pressure reciprocating means (30).

On the other hand, the pressurized reciprocating means 30 is positioned to face the molding unit 12 to press the mold (M1, M2) or press the mold (M1, M2) as the movable platen 22 is moved forward and backward It is provided to be possible, this pressurized reciprocating means 30 is a cylinder of a stretchable structure or may be composed of a drive motor 31 and the gear assembly 32 and the multi-link 33 connected thereto, as shown.

In addition, the transfer line 40 is installed at a distance between the first guide roller 41 and the first guide roller 41 on which one end of the mold (M1, M2) is seated so that the mold (M1, M2) It consists of a second guide roller 42 for supporting the other end side, the transfer means 50 is installed on one side of the transfer line 40 to move the mold (M1, M2) on the transfer line 40 It is provided.

The transfer means 50 is coupled to move the mold (M1, M2) by mounting the slider 53 on the ball screw 52 extending in parallel to one side of the transfer line 40, this figure Explanation by 4 is as follows.

As shown in FIG. 4, the transfer means 50 includes a servo motor 51 and a ball screw 52 coupled thereto, in which the position control is accurate so that the injection position is made accurately, and the slider 53 is a mold. In view of the moving distance of the (M1, M2) is provided with a connecting bar 54 extending to a predetermined length. Preferably, the transfer means 50 is composed of a single unit to drive the two molds (M1, M2) integrally, for this purpose, a bridge (B) between the first mold (M1) and the second mold (M2) 60) is connected.

On the other hand, the transfer line 40 is provided with an inner roller 43 is installed on the platen (21, 22) side of the molding machine 10 as well as the first as described above outside the molding machine 10 The guide roller 41 and the second guide roller 42 are provided to guide the molds M1 and M2, which will be described with reference to FIG. 5.

As shown in Figure 5, the transfer line 40 of the present invention is provided with a first guide roller 41 and a second guide roller 42 spaced apart from each other in the width direction to seat only the end of the mold (M2) Smooth running is possible with the contact area minimized. The first guide roller 41 has grooves 44 formed on an outer circumference thereof, and the second guide roller 42 is a drum-shaped roller that extends in a cylindrical shape. It is provided.

Here, the mold (M2) is a fixed mold (1) coupled to the fixed platen 21 in a fixed position during the molding process or withdrawal process, and the movable platen (face) facing the fixed mold (1) A first mold formed of a movable mold 2 coupled to the movable mold 22, and extended to closely adhere to the fixed platen 21 or the movable platen 22 on each rear surface of the fixed mold 1 and the movable mold 2. The back plate 3 and the second back plate 4 are provided.

For this mold M2, the first guide roller 41 corresponds to the first back plate 3 on the fixed mold 1 side, and the second guide roller 42 on the movable mold 2 side. Corresponding to the second back plate 4, the first guide roller 41 is seated on the groove 44 with the end of the first back plate 3 on the fixed mold 1 side inserted. As it prevents the flow of the left and right, stable running in the moving process is possible, the second guide roller 42 is provided in the form of a drum of a predetermined length in the case of the mold (M1, M2) of various specifications of different sizes The second back plate 4 of the movable mold 2 can be easily seated.

On the other hand, as shown in Figure 6, during the process of the present invention to control the pressurized reciprocating means 30 when moving the mold (M1, M2) outside the molding machine 10 for the cooling process of the mold (M1, M2) By forming the gaps G1 and G2 between the and platens 21 and 22, it is possible to completely exclude the interference between the devices during the transfer, which is the fixed platen 21 and the movable platen 22 at the previous stage. After the desorption process of releasing the clamping operation of the clamper 23 provided on the upper surface, the pressurized reciprocating means 30 is controlled by a fine separation process to retract the movable platen 22 from the molds M1 and M2. It is to let.

By this fine spacing process, even if the movable platen 22 forms the movable side gap G1 spaced apart from the molds M1 and M2, the fixed platen 21 side does not perform any control. The repulsive force of the molds M1 and M2 acts due to the release of the adhesion force according to the movable side gap G1 to form the fixed side gap G2 spaced apart from the fixed platen 21 automatically.

Therefore, the present invention enables the movement of the molds M1 and M2 in a state in which the stationary platen 21 and the movable platen 22 are separated from the molds M1 and M2 by the micro-spaced process as described above. In this way, the movement of the no-load state in which contact between the devices is completely excluded can prevent the wear, damage or failure of the device from occurring.

Maintaining the coupling state between the stationary mold (1) and the movable mold (2) is possible by a separate coupling means that is not described by the magnetic coupling, etc. This is registered in Korea Utility Model Publication (No. 20-0360220) or It is possible by the conventional techniques known in the domestic registered patent publication (No. 10-1278883).

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

G1: clearance on the movable side G2: clearance on the fixed side
M1: first mold M2: second mold
1: fixed mold 2: movable mold
3: first backplate 4: second backplate
10: injection molding machine 11: molding body
12: Injection unit 13: Discharge means
14: Hopper 15: Screw
16: nozzle 17: controller
20: clamping unit 21: fixed platen
22: movable platen 23: clamper
30: pressurized reciprocating means 31: drive motor
32: gear assembly 33: multi-link
40: feed line 41: first guide roller
42: second guide roller 43: internal roller
44: groove 50: transfer means
51: servomotor 52: ball screw
53: Slider 54: Connecting Bar
60: the bridge

Claims (3)

A first mold M1 and a second mold M2 are alternately put on one molding machine 10 so as to continuously manufacture a molding;
The molding machine 10
Molding unit 12 is provided on the casing main body 11 side to supply the resin to each of the mold (M1, M2) side, and the molding unit 12 to face each of the mold (M1) , The pressurized reciprocating means 30 operated in a horizontal direction to pressurize or depressurize the M2, and a controller 17 connected to control the operation of the pressurized reciprocating means 30, the molding unit 12 and the pressurized reciprocating means. A fixed platen (21) and a movable platen (22), each of which has a clamper (23), positioned between (30) and fixed to each of the molds (M1, M2);
Each mold (M1, M2) is
The first back plate (3) is in close contact with the fixing platen 21 so as to be fixed in a state positioned on the forming unit 12 side at the time of molding. An extended back fixed mold 1 and a second back plate 4 provided to be movable by the pressure reciprocating means 30 to face the fixed mold 1 to be in close contact with the movable platen 22 are provided. In the molding system consisting of a movable mold (2) formed on the rear surface;
The first mold (M1) and the second mold (M2) is seated on the transfer line 40 extending to the side of the molding machine 10 is provided to be moved by the transfer means 50, the molding machine ( 10) the cooling process is performed by the second mold (M2) outside the molding machine 10 while the molding process and the drawing process by the first mold (M1) in progress, the conversely in the molding machine (10) A cooling process is performed by the first mold M1 outside the molding machine 10 while a molding process and a drawing process are performed by the second mold M2;
Before the first mold M1 or the second mold M2 is transferred to the outside in the molding machine 10, the stationary platen 21 and the movable platen 22 to which the respective molds M1 and M2 are coupled. Desorption step (P100) and the clamping release from);
After the desorption step (P100) by controlling the pressurized reciprocating means 30 by the controller 17 to finely retract the movable platen 22 from the mold (M1, M2) to the movable side gap (G1) ) And at the same time fine separation to form a fixed side gap (G2) of the mold (M1, M2) spontaneously spaced due to the release of the adhesion force according to the movable side gap (G1) on the fixed platen 21 side Step (P200);
Continuous mold exchange system of the molding machine, characterized in that it comprises a side transfer step (P300) for transferring the mold (M1, M2) to the outside of the molding machine 10 after the fine spacing step (P200).
The method of claim 1, wherein the conveying means 50 is spaced apart from the first guide roller 41 and the first guide roller 41 corresponding to the first back plate (3) on the fixed mold (1) side The second guide roller 42 is provided to correspond to the second back plate 4 on the movable mold 2 side, and the first guide roller 41 is disposed on the first back plate 3. Grooves (44) to which the end is inserted is formed, and the second guide roller (42) is a continuous mold exchange system of the molding machine, characterized in that provided in the form of a drum extending in a cylindrical shape.
The method according to claim 1 or 2, wherein the first mold (M1) and the second mold (M2) are interconnected by a bridge (60) coupled to maintain a constant distance and integrated by the conveying means (50). Continuous mold exchange system of the molding machine, characterized in that interlocked with.

Images