TW202017725A - Auxiliary device for attaching mold and attaching method of mold using the same - Google Patents

Abstract

This invention can insert the positioning rings installed on the mold into the holes penetrated through the fixed-side pressing plate of an injection molding machine for positioning without utilizing special apparatus on the mold side. An auxiliary device (10) performs the positioning of a mold (2) that is hanging between a fixed-side pressing plate (3) and a movable-side pressing plate (4). The pressure cylinder (12) enables the output member (13) moving back and forth vertically. The output member (13) is connected to a mold receiving portion (14) that is horizontally carried with the hanging mold (2). The mold receiving portion (14) is configured with a plurality of rotatable abutting members (14a) at intervals. The guiding channels (11a) of the base portion (11) may enable the mold receiving portion (14) moving in the vertical direction while maintaining its posture.

Description

Auxiliary device for installing mold and method for installing mold using the device

The present invention relates to an auxiliary device for installing a mold between a fixed side pressure plate and a movable side pressure plate, and a method for installing a mold using the auxiliary device.

The mold replacement of the injection molding machine is to insert the mold between the fixed side pressure plate and the movable side pressure plate by a hanging crane, and install it in the hole of the fixed side pressure plate of the injection molding machine, and install it in the positioning ring of the mold Insert to position. When the positioning ring is inserted into the hole of the fixed side pressure plate, the horizontal and vertical positions of the mold must be adjusted, and the position of the rotation direction must be fine-tuned.

According to Patent Document 1, a positioning block with positioning protrusions is fixed on the lower part of the fixed side pressure plate, and a positioning gap is formed in the mold. When the mold lifted by an overhead traveling crane or the like is lowered between the fixed side pressure plate and the movable side pressure plate At this time, the positioning is completed by engaging the positioning notch with the positioning protrusion. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 4235495

[Problems to be solved by the invention]

In the conventional positioning, a positioning block with a positioning protrusion and a positioning notch are necessary. As long as one positioning block is provided on the fixed side, on the other hand, the positioning notch is an additional part that must be installed on all the molds, which will cause an increase in the cost of introduction of the molds. In addition, it is expensive to introduce existing molds.

In order to solve such problems, the purpose of the present invention is to provide an auxiliary device and method for mounting a mold. No special equipment is required on the mold side. A hanging crane with poor stopping accuracy is used to install the injection molding. In the hole of the fixed side pressure plate of the machine, the positioning ring installed in the mold can be inserted for positioning. [Technical means to solve the problem]

In order to achieve the above object, the auxiliary device for mounting a mold of the present invention is an auxiliary device for positioning and positioning a mold by hanging between a fixed side pressure plate and a movable side pressure plate. Department and Abutment Department, The aforementioned pressure cylinder is to inject the pressure fluid and advance and retreat the output member in the up and down direction; The mold receiving portion is connected to the output member to allow a plurality of rotatable abutment members disposed at intervals to contact and horizontally carry the suspended mold; The base part has a guide channel for maintaining the posture of the mold receiving part and allowing it to move in the vertical direction; The weight of the mold carried in the mold receiving portion is used to sink the output member.

In addition, the mold mounting method of the present invention is a mold mounting method that uses an auxiliary device for mounting the mold to push the positioning ring of the mold into the hole of the fixed side platen, and is characterized by The suspended mold is lowered between the fixed side pressure plate and the movable side pressure plate, and placed on the abutment member of the mold receiving portion after the rise, Adjust the position of the aforementioned mold in the horizontal direction, adjust the position of the downwardly oriented mold, and insert the positioning ring of the aforementioned mold into the hole of the fixed side pressure plate. [Effect of invention]

Let the mold receiving section rise in a horizontal state, and in the stage where the mold hung by the crane is lowered, the mold can be made horizontal. In addition, since the mold can be easily moved in the horizontal direction on the mold receiving portion, horizontal alignment becomes easier. In addition, when the mold receiving portion is lowered, the positioning ring is manually pushed into the hole of the fixed side pressure plate, whereby positioning can be performed. At this time, it is not necessary to attach special additional parts on the mold side as shown in the prior art.

FIG. 1 shows how the mold 2 is set in the injection molding machine 1. In FIG. 1A, the injection molding machine 1 has a fixed-side pressure plate 3 and a movable-side pressure plate 4. The movable side pressure plate 4 is guided by the tie bar 5 and can move relative to the fixed side pressure plate 3.

In the drawing, on the right side of the fixed-side pressure plate 3: an injection unit 7 having a hopper 6 for raw material injection is arranged, and an injection nozzle 8 is attached to the injection unit 7. The injection nozzle 8 injects the raw material into the mold 2 through a hole (not shown) formed in the fixed side platen 3.

FIG. 1B shows the suspended mold 2. The mold 2 is suspended in a state where the fixed side mold 2a and the movable side mold 2b face each other. The suspension rings 9a and 9b are provided on the diagonal line at each of the fixed side mold 2a and the movable side mold 2b. The mold 2 is not accurately maintained in a horizontal state. In many cases, the mold 2 is suspended in a slightly inclined state for some reason, such as the center of gravity of the mold deviating from the center of the mold. The mold 2 suspended in this way must be correctly installed at a predetermined position on the fixed side pressure plate 3 and the movable side pressure plate 4.

The auxiliary devices 10 and 20 are respectively installed on the lower sides of the fixed-side pressure plate 3 and the movable-side pressure plate 4. Since the structures of the auxiliary devices 10 and 20 are the same, the following is an explanation of the auxiliary device 10 on the side of the fixed side pressure plate 3.

FIG. 2 shows the auxiliary device 10, FIG. 2A is a front view, FIG. 2B is a side view, and FIG. 2C is a longitudinal sectional view. The auxiliary device 10 includes a base portion 11, a cylinder 12, an output member 13, a mold receiving portion 14, and a pair of rods 15. The base portion 11 is directly attached to the fixed side pressure plate 3 (or the movable side pressure plate 4 in the case of the auxiliary device 20) by a fastening tool (bolt) 16 through an appropriate partition 17 or directly. The base portion 11 is provided with a guide channel 11a that allows a pair of rods 15 to slide up and down while maintaining a parallel state. The mold receiving portion 14 is a member that receives the bottom surface of the mold 2 and has a pair of contact members 14 a supporting the bottom surface of the mold 2 at both ends in the longitudinal direction. The contact member 14a is provided with a plurality of them at intervals, and is the part that protrudes most upward among all the parts constituting the mold receiving part 14. The contact member 14a is composed of a pair of rollers supported by mutually parallel shafts, and the line connecting the front ends of the pair of contact members 14a is horizontal. The roller is used to facilitate the movement of the carried mold 2 in the longitudinal direction of the mold receiving portion 14. In addition, the mold receiving portion 14 is supported by a pair of rods 15. The pair of rods 15 are maintained to slide parallel to each other by the guide channel 11a of the base portion 11, so that the mold receiving portion 14 can move up and down while maintaining a horizontal posture.

The mold receiving portion 14 is connected to the output member 13 of the cylinder 12. The output member 13 penetrates the mold receiving portion 14 up and down with a small amount of play, and the mold receiving portion 14 is sandwiched between the flanges 13a at the upper and lower ends of the upper and lower ends, and the operation of the mold receiving portion 14 and the output member 13 is interlocked. The pressure cylinder 12 is filled with pressurized fluid (compressed air) so as to become a predetermined pressure. When the pressure in the pressure cylinder 12 exceeds a predetermined pressure, the pressure fluid can be discharged through the pressure relief valve 18. In addition, in the embodiment, the pressure cylinder 12 and the output member 13 are provided with two sets, but it may be one set or three or more sets. The pressure cylinder 12 is fixed to the base portion 11 by a fastener 12a. In addition, when the pressure in the pressure cylinder 12 is lower than a predetermined pressure, the pressure fluid may be supplied to the pressure cylinder 12 through the check valve 19. In this case, the check valve 19 restricts the flow toward the direction of discharge from the cylinder 12.

Next, in FIG. 3, the operation of the auxiliary device 10 of this embodiment will be described. The figure shows how the mold 2 is positioned from the movable side pressure plate 4 toward the fixed side pressure plate 3. Therefore, the movable side pressure plate 4 is not shown. In addition, the positioning ring 2c attached to the mold 2 is indicated by a broken line. In addition, the hole 3a provided in the fixed side pressure plate 3 is indicated by a solid line when it is visually confirmed, and is indicated by a chain line when it is hidden by the mold 2.

By the pressure of the pressurized fluid of the pressure cylinder 12, the output member 13 is raised to move the mold receiving portion 14 to the raised position. In this state, first, as shown in FIG. 3A, the mold 2 is suspended from above by a crane or the like between the fixed-side pressure plate 3 and the movable-side pressure plate 4 and lowered. Moreover, if the mold 2 is lowered, because the mold 2 is inclined in most cases, as shown in FIG. 3B, one end of the bottom surface of the mold 2 and the end (right side) of the mold receiving portion 14 that protrudes upward most The contact member 14a contacts.

Then, if the mold 2 is further lowered by a crane, as shown in FIG. 3C, the contact member 14a on one end side will rotate. Since the mold receiving portion 14 is kept horizontal, the mold 2 gradually becomes horizontal as the mold 2 descends. Next, as shown in FIG. 3D, the mold 2 comes into contact with the contact members 14a at both ends to be in a horizontal state. Until the wire of the hanging mold 2 becomes slack, the crane may be lowered. Compression of the pressure fluid inside the cylinder 12 by the weight of the mold 2 causes the mold receiving portion 14 to sink, but the sinking stops within the length of the metal wire hanging the mold 2. At this time, the positioning ring 2c is located above the hole 3a, and is also in a state of being offset in the left-right direction of the drawing.

In this state, the operator aligns the positioning ring 2c and the hole 3a in the left-right direction. In this alignment, since the mold 2 is in a state of easy movement in the left-right direction on the pair of abutting members 14a, the fixed side pressure plate 3 is observed through the hole 3a from the opposite side of the mold 2 so that the positioning ring 2c is located in the hole 3a The central way manually moves the mold 2.

If the mold 2 is further lowered by a crane (if the drop is insufficient, the mold 2 is further lowered by a crane), the compressed fluid in the pressure cylinder 12 is further compressed by the weight of the mold 2 to sink the output member 13. As shown in FIG. 3E, when the positioning ring 2c is aligned with the hole 3a in the vertical direction, the operator pushes the mold 2 and pushes the positioning ring 2c into the hole 3a of the fixed side pressure plate 3.

In this state, the movable side pressure plate 4 is moved in the direction of the fixed side pressure plate 3, and the mold 2 is sandwiched to end. Then, a predetermined operation such as clamping the mold 2 to the movable side pressure plate 4 and the fixed side pressure plate 3 by a magnet or a mechanical method, removing the overhead traveling crane hook, etc. is completed, thereby ending the mold replacement.

In the above description, the auxiliary device 20 on the movable side pressure plate 4 side has the same structure as the auxiliary device 10 and performs the same operation. According to this embodiment, the mold receiving portion 14 rises while maintaining the horizontal state, and the mold 2 can be brought into a horizontal state when the mold 2 suspended by the crane is lowered. At this time, although the position in the horizontal and vertical directions is offset, the mold 2 can be easily moved in parallel along the horizontal direction on the mold receiving portion 14, so that the horizontal alignment is easy. In addition, because the lowering speed of the mold receiving portion 14 is slow, positioning can be performed by inserting the positioning ring 2c into the hole 3a of the fixed side pressure plate 3. At this time, there is no need to add special additional parts to the various molds 2, which has the effect of reducing the cost of the equipment.

In the above embodiment, auxiliary devices 10 and 20 are provided on the fixed-side pressure plate 3 and the movable-side pressure plate 4, respectively, and the mold receiving portion is enlarged in such a manner as to accept both the fixed-side mold 2a and the movable-side mold 2b, and only on the fixed An auxiliary device may be provided on the side pressing plate 3. In this case, in order to ensure the level of the mold 2 with three-point support, it is preferable to provide at least one abutment member 14a in addition to the abutment members 14a at both ends of the mold receiving portion 14. In the above-mentioned embodiment, the contact member 14a is a cylindrical roller, but it may be spherical. In addition, if the pressure cylinder 12 adjusts the pressure of the enclosed pressure fluid, the pressure inside the pressure cylinder 12 is increased when the heavier mold 2 is carried, and the pressure is reduced when the lighter mold 2 is carried. This can correspond to the molds 2 of various weights. On the other hand, the pressure relief valve 18 and the check valve 19 may be omitted, the pressure cylinder 12 may be simplified, and only one type of pressure gas may be enclosed. In this case, it is difficult to correspond to the weight of a wide range of molds.

Fig. 4 shows another embodiment of the present invention. FIG. 4A shows the auxiliary device 100 in an inclined configuration. Figure 4B is a side view. In the drawings, the same configuration as the auxiliary device 10 is denoted by the same symbol. The auxiliary device 100 is installed through the partition block 117 so as to be inclined at an angle α with respect to the fixed-side pressure plate 3 (vertical direction). In this way, the output member 13 moves up and down at an angle α before fixing the side pressure plate 3. On the other hand, the mold receiving portion 114 that receives the mold 2 supports the pair of contact members 114a horizontally so that the bottom surface of the mold 2 can be received horizontally. If the mold 2 is carried on the contact member 114a, when the output member 13 moves downward, the mold 2 is also moved to the side of the fixed side pressure plate 3, so the positioning ring 2c is brought close to and inserted into the fixed side pressure plate 3 The hole 3a becomes easy.

In addition, in the above embodiment, compressed air is used as the pressure fluid of the pressure cylinder 12, but when oil pressure is used, it is controlled as follows. First, the pressure fluid is injected into the cylinder 12 to raise the output member 13. The mold receiving portion 14 moves to the raised position. In this state, the mold 2 is hung from above by the crane or the like between the fixed side pressure plate 3 and the movable side pressure plate 4. Because the mold receiving portion 14 is kept horizontal, as the mold 2 descends, the mold 2 gradually becomes horizontal. In the case of oil pressure, because the output member 13 does not sink, the metal wire hanging the mold 2 can be lowered to a relaxed state.

In this state, the operator aligns the position of the positioning ring 2c and the hole 3a in the left-right direction. If the pressure relief valve 18 of the pressure cylinder 12 is opened and the injected fluid leaks out (if the drop is insufficient, the mold 2 is further lowered by a crane), the weight of the mold 2 gradually passes from the pressure cylinder 12 through the pressure relief valve 18 The fluid is allowed to leak, and the mold 2 is lowered. The falling speed is based on the pressure loss when the fluid leaks out. As long as the pressure loss can be adjusted by the relief valve 18, the rate of descent can be controlled. The operator, when the positioning ring 2c and the hole 3a are aligned in the up and down direction, pushes the mold 2 and pushes the positioning ring 2c into the hole 3a of the fixed side pressure plate 3.

1: Injection molding machine 2: mold 2a: fixed side mold 2b: Movable side mold 2c: locating ring 3: fixed side pressure plate 3a: hole 4: movable side pressure plate 5: tie bar 6: Hopper 7: Injection unit 8: injection nozzle 9a, 9b: ring 10,20,100: auxiliary device 11: Abutment Department 11a: Guide channel 12: Press cylinder 12a: Fastener 13: output component 13a: flange 14,114: Mold receiving department 14a, 114a: abutment member 15: Rod 16: Fastener 17,117: divider 18: Pressure relief valve 19: Check valve 20: Auxiliary device

[Figure 1] It shows how the mold is set in the injection molding machine. FIG. 1A shows the injection molding machine and the mold. FIG. 1B shows the suspended mold. [FIG. 2] This is a display auxiliary device. FIG. 2A is a front view, FIG. 2B is a side view, and FIG. 2C is a longitudinal cross-sectional view. [Figure 3A~E] This is an explanatory diagram of the operation of the auxiliary device. [FIG. 4] It is an explanatory diagram of another embodiment of the present invention. FIG. 4A shows an auxiliary device in an oblique configuration, and FIG. 4B is a side view thereof.

10: Auxiliary device

11: Abutment Department

11a: Guide channel

12: Press cylinder

12a: Fastener

13: output component

13a: flange

14: Mold receiving department

14a: abutment member

15: Rod

16: Fastener

17: divider

18: Pressure relief valve

19: Check valve

Claims (4)

An auxiliary device for installing a mold is an auxiliary device for positioning the mold by hanging between a fixed side pressure plate and a movable side pressure plate. It has a pressing cylinder, a mold receiving part and a base part, The aforementioned pressure cylinder is to inject the pressure fluid and advance and retreat the output member in the up and down direction; The mold receiving portion is connected to the output member to allow a plurality of rotatable abutment members disposed at intervals to contact and horizontally carry the suspended mold; The base part has a guide channel for maintaining the posture of the mold receiving part and allowing it to move in the vertical direction; The weight of the mold carried in the mold receiving portion is used to sink the output member. The auxiliary device for installing a mold according to claim 1, wherein, One auxiliary device is fixed to each of the fixed-side pressure plate and the movable-side pressure plate. The auxiliary device for installing a mold according to claim 1, wherein, The auxiliary device is provided obliquely with respect to the fixed-side pressure plate. A method for installing a mold is to use an auxiliary device for installing a mold as described in claim 1 to push the positioning ring of the mold into the hole of the fixed side pressure plate. The method is characterized in that: The suspended mold is lowered between the fixed side pressure plate and the movable side pressure plate, and placed on the abutment member of the mold receiving portion after the rise, Adjust the position of the aforementioned mold in the horizontal direction, adjust the position of the downwardly oriented mold, and insert the positioning ring of the aforementioned mold into the hole of the fixed side pressure plate.

Images