JP6883175B2 - Master frame and die plate positioning structure - Google Patents

Description

The present invention relates to a positioning structure of a master frame and a die plate that can accurately and easily align the master frame and the die plate in a foamed resin molding machine.

Conventionally, as a foam resin molding machine, a machine in which a foam resin bead raw material is filled in a cavity formed by a pair of molds made of an uneven mold and heat foam molding is widely known. One or more of the molds are mounted on the master frame, and a steam chamber is formed on the back side of the mold. Further, this master frame is attached to the die plate on the fixed side and the die plate on the moving side, respectively.

When the master frame is attached to the die plate, there is no horizontal and vertical position adjustment mechanism, so it is common for the operator to make fine adjustments to the master frame on site after roughly setting the positions of the two. At this time, since the master frame moves freely in the horizontal and vertical directions, there is a problem that fine adjustment is difficult and the working time is long. Further, the vertical adjustment has a problem that the work becomes complicated because it is necessary for the operator to open the safety door and enter the molding machine to perform the raising and lowering operation.

On the other hand, since it is necessary to supply steam, cooling water, and air to the steam chamber, a service pipe is connected to the upper surface of the master frame, and an extra pipe is connected to the lower surface of the master frame. A drain pipe for draining water etc. as a drain is connected. Therefore, if the mold is replaced, it is necessary to reconnect all the utility pipes and the drain pipes, which requires a long time of work. Therefore, the applicant of the present application has to reconnect all the utility pipes and the drain pipes. Regarding the connection of pipes and drain pipes, we have developed a connection structure that enables simultaneous utility connection by attaching a master frame, and have applied for a patent earlier.

In the case described in Patent Document 1, it is a prerequisite that the master frame and the die plate are accurately aligned when the utility pipes and the like are connected at the same time. Therefore, the master frame and the die are used. It has been desired to develop a positioning structure that can easily align the plates in a short time.

Japanese Patent No. 4948207

The present invention solves the above-mentioned conventional problems and provides a master frame and die plate positioning structure capable of accurately and easily aligning the master frame and die plate in a foamed resin molding machine. With the goal. In addition, the connection between the utility pipe port or drain pipe port on the master frame side and the service pipe port or drain pipe port on the die plate side can be performed in a state where the master frame and the die plate are accurately aligned at the same time as the connection. With the goal.

The positioning structure of the master frame and the die plate of the present invention made to solve the above problems is a positioning structure of the master frame and the die plate when the master frame equipped with the mold is attached to a predetermined position of the die plate. ,
A concave groove for horizontal positioning is provided in the center of the lower end of the master frame, and a step portion for vertical positioning is provided in the center of the side surface of the master frame.
On the other hand, a pin for horizontal positioning that locks to the concave groove is provided at the center of the lower end of the die plate, and a receiving portion for vertical positioning on which the step portion is placed is provided at the center of the side surface of the die plate. hand,
The feature is that the pin is locked in the concave groove to position the master frame in the horizontal direction, and the step portion is placed on the receiving portion to position the master frame in the vertical direction. This is the invention according to claim 1.

Also, according to a preferred embodiment, the master frame is fitted with a mold to form a steam chamber.
A bulge that communicates with the steam chamber is integrally formed on the upper surface of the master frame, and an opening for accepting utility is formed on the vertical surface of the bulge that faces the die plate.
On the other hand, a box body to which a service pipe for supplying a service to the steam chamber is connected is provided on the upper surface of the die plate, and an opening for receiving the service is provided on the vertical surface of the box body facing the master frame. By forming a utility discharge opening corresponding to
It is preferable that the master frame and the die plate are positioned so that the service receiving opening and the service discharging opening communicate with each other, and this is the invention according to claim 2.

Further, according to another preferred embodiment, a bulge portion communicating with the steam chamber is integrally formed on the lower surface of the master frame, and a drain discharge opening is provided on the vertical surface of the bulge portion facing the die plate. Form a part,
On the other hand, a box body to which a drain pipe for discharging drain from the steam chamber is connected is provided on the lower surface of the die plate, and a drain receiving opening corresponding to the opening is provided on the vertical surface of the box body facing the master frame. Form a part,
It is preferable that the master frame and the die plate are positioned so that the drain discharge opening and the drain receiving opening communicate with each other, and this is the invention according to claim 3.

In the invention according to claim 1, a concave groove for horizontal positioning is provided at the center of the lower end of the master frame, and a step portion for vertical positioning is provided at the center of the side surface of the master frame, while the lower end of the die plate. A pin for horizontal positioning that locks to the concave groove is provided in the center, and a receiving portion for vertical positioning on which the step portion is placed is provided in the center of the side surface of the die plate, so that the master frame is horizontal. The directional positioning can be easily performed by engaging the concave groove and the pin, and the vertical positioning of the master frame can be easily performed by placing the step portion on the receiving portion.
Furthermore, in the molding process, heating and cooling are repeated to thermally expand and contract the master frame, but the vertical direction is supported by the stepped portion in the center of the side surface, and the master frame expands and contracts in the vertical direction around this, so that it is conventional. As compared with supporting at the lower end, the expansion / contraction width of the end can be suppressed to half, and molding with high dimensional accuracy can be maintained.

In the invention according to claim 2, a mold is mounted on the master frame so as to form a steam chamber, and a bulging portion communicating with the steam chamber is integrally formed on the upper surface of the master frame. An opening for receiving service is formed on the vertical surface of the bulging portion facing the die plate, while a box body to which a service pipe for supplying service to the steam chamber is connected is formed on the upper surface of the die plate. In addition to being provided, a utility discharge opening corresponding to the utility acceptance opening is formed on the vertical surface of the box body facing the master frame, and the utility acceptance opening and the utility discharge opening are provided. Since the master frame and the die plate are positioned so that the parts communicate with each other, if the master frame is fixed to the die plate, the bulging part and the box body will be joined, and the opening for accepting the utility will be used. It is possible to automatically match and communicate with the utility discharge opening.

Further, in the invention according to claim 3, a bulging portion communicating with the steam chamber is integrally formed on the lower surface of the master frame, and a drain discharge opening is provided on the vertical surface of the bulging portion facing the die plate. On the other hand, a box body to which a drain pipe for discharging drain from the steam chamber is connected is provided on the lower surface of the die plate, and the vertical surface of the box body facing the master frame corresponds to the opening. Since the drain receiving opening is formed and the master frame and the die plate are positioned so that the drain discharging opening and the drain receiving opening communicate with each other, the drain discharging opening and the drain receiving are received. It can be automatically communicated with the opening.

It is a front view which shows the foam resin molding machine. It is explanatory drawing which shows the process of attaching a master frame to a die plate. It is a front view which shows the concave groove for horizontal positioning. It is sectional drawing which shows the receiving part for vertical positioning. It is a front view which shows the master frame which concerns on this invention. It is a side view of FIG. It is a perspective view of FIG. It is an enlarged sectional view of the main part which shows the connection of a utility pipe. It is an enlarged sectional view of the main part which shows the connection of a drain pipe.

Hereinafter, preferred embodiments of the present invention will be shown with reference to the drawings.
FIG. 1 is a front view showing a foamed resin molding machine. In the figure, 1 is a mold, 2 is a master frame on the moving side on which the mold 1 is mounted, and 3 is a die plate on the moving side for fixing the master frame 2. Reference numeral 4 denotes a moving side housing that supports the die plate 3.
Similar to the moving side, the fixed side also has the mold 1a, the master frame 2a, the die plate 3a, and the housing 4a, but since the positioning structure of the master frame and the die plate is basically the same, the following will be described. The positioning structure on the moving side will be described.

FIG. 2 is an explanatory diagram showing a process of attaching the master frame 2 to the die plate 3.
A concave groove 20 for horizontal positioning is provided at the center of the lower end of the master frame 2 (position of 1/2 in the width direction), and the center of the left and right side surfaces of the master frame 1 (1/2 of the height direction of the side surface). Positions) are provided with steps 21 and 21 for vertical positioning. The concave groove 20 for horizontal positioning and the step portion 21 for vertical positioning may be integrally formed on the master frame 2, or a separate component may be attached later.

On the other hand, a pin 30 for horizontal positioning that locks to the concave groove 20 is provided at the center of the lower end of the die plate 3, and a vertical portion 21 is placed at the center of the left and right side surfaces of the die plate 3. A receiving portion 31 for directional positioning is provided. The horizontal positioning pin 30 and the vertical positioning receiving portion 31 may be integrally formed on the die plate 3, or a separate component may be attached later.

In the configuration as described above, when the master frame 2 is moved horizontally to the die plate 3 side to approach the die plate 3 and then moved from top to bottom, the concave groove 20 and the pin 30 are formed as shown in FIG. Engagement, the recess 20 descends while being guided by the pin 30. As a result, the master frame 2 is not shaken to the left or right, and the positioning in the horizontal direction is surely performed.
At the same time, when the master frame 2 is lowered to a predetermined position, as shown in FIG. 4, the step portion 21 is placed in contact with the receiving portion 31 of the die plate 3, and the master frame 2 cannot be lowered any further. As a result, the master frame 2 is positioned in the vertical direction.

In this way, simply by moving the master frame 2 from top to bottom with respect to the die plate 3, the concave groove 20 and the pin 30 are engaged, and the step portion 21 is placed on the receiving portion 31 and is perpendicular to the horizontal direction. Positioning of the direction will be performed easily and reliably.
Further, even when heating and cooling are repeated in the molding process and the master frame thermally expands and contracts, the vertical direction is supported by 21 at the step portion in the center of the side surface, and the lower end expands and contracts in the vertical direction around this step. The expansion and contraction width of the end portion can be suppressed to half as compared with the support by the portion, and the molding with high dimensional accuracy can be maintained. Similarly, in the horizontal direction, it is supported by the concave groove 20 at the center of the lower end and expands and contracts in the left-right direction around this, so that the expansion and contraction width of the end portion can be suppressed to half as compared with the case where it is supported by the side end portion. ..

Next, the communication between the utility reception opening and the utility discharge opening will be described.
5 is a front view showing the moving side master frame 2 according to the present invention, FIG. 6 is a side view thereof, and FIG. 7 is a perspective view thereof. In the figure, four molds 1 are mounted on the master frame 2, but the present invention is not limited to this, and one mold 1 may be used, or any plurality of molds 1 may be used. Further, the back surface of the master frame 2 is closed by a back plate 5, and a steam chamber 6 is formed.

On the upper surface of the master frame 2, a service pipe for supplying steam, cooling water, air, vacuum, and other functions required for foam resin molding to the steam chamber 6 is connected, and a conventional flexible hose. Was connected by. For this reason, it is necessary to remove all the utility pipes and then reconnect the new utility pipes every time the mold is replaced, which requires a long time and dangerous work at a high place.
Therefore, in the present invention, a structure is adopted in which the service pipe for supplying the service to the steam chamber can be safely connected at the same time as the master frame is attached to the die plate of the master frame.

In the present invention, the bulging portion 7 of the cavity communicating with the steam chamber 6 is integrally formed on the upper surface of the master frame 2, and is used for the vertical surface 7a of the bulging portion 7 facing the die plate 3. Openings 8a and 8b for accepting roles were formed. In the drawing, the utility acceptance opening 8a supplies steam, air, vacuum, etc., and the utility acceptance opening 8b supplies cooling water.

On the other hand, as shown in FIG. 8, a box body having a service pipe (not shown) connected to the upper surface of the die plate 3 to supply steam, cooling water, air, vacuum, and other functions to the steam chamber 6. 9 is provided, and the vertical surface of the box body 9 facing the master frame 2 has a structure in which a service discharge opening 10 corresponding to the service reception opening 8a is formed. Further, the box body 9 is relayed and connected to the opening 8b for accepting the utility service.
Then, when the master frame 2 is fixed to the die plate 3 so that the service receiving openings 8a and 8b and the service discharge opening 10 communicate with each other, the service pipe automatically communicates with the steam chamber 6. It has a structure to do. A packing 7b for maintaining airtightness is interposed at the joint surface between the bulging portion 7 and the box body 9.

As described above, in the present invention, the master frame 2 and the die plate 3 are fixed in a state of being accurately positioned in both the horizontal direction and the vertical direction. It will be securely connected to the opening 10.

Further, the same structure can be used not only for the connection of the utility pipe but also for the connection of the drain pipe that controls the drain discharge and the vacuum.
As shown in FIG. 9, a bulging portion 11 communicating with the steam chamber 6 is integrally formed on the lower surface of the master frame 2, and a drain is formed on the vertical surface 11a of the bulging portion 11 facing the die plate 3. The discharge opening 12 is formed. On the other hand, a box body 13 to which a drain pipe (not shown) for discharging drain from the steam chamber 6 is connected is provided on the lower surface of the die plate 3, and the vertical surface of the box body 13 facing the master frame is described above. The structure is such that the drain receiving opening 14 corresponding to the opening 12 is formed.
In this case, when the master frame 2 is fixed at a predetermined position on the die plate 3, the drain discharge opening 12 is surely connected to the drain receiving opening 14.

It is preferable that the opening area of the utility receiving opening 8a is larger than the opening area of the utility pipe connected to the box body 9. As a result, the flow velocity of steam in the opening for receiving service 8a can be equal to or less than the flow velocity on the primary side of the steam valve, and "silence of steam", "overshoot", and "hunting" phenomena are prevented. As a result, the pressure response performance of the steam chamber 6 is improved, and the steam valve can be operated so as to automatically adjust the set value of the pressure in a range of, for example, ± 0.005 MPa. As a result, the pressure of the steam chamber 6 can be adjusted agilely, and the steam can be uniformly introduced into the steam chamber 6 by suppressing the flow velocity of the steam, so that the molding cycle is shortened and the productivity is improved. You will be able to do it.

1 Moving side mold 1a Fixed side mold 2 Moving side master frame 2a Fixed side master frame 3 Moving side die plate 3a Fixed side die plate 4 Moving side housing 4a Fixed side housing 5 Back plate 6 Steam chamber 7 Swelling part 7a Vertical surface 7b Packing 8a Opening for receiving service 8b Opening for receiving service 9 Box body 10 Opening for discharging service 11
11a vertical plane
11b Packing 12 Drain discharge opening 13 Box body 14 Drain receiving opening 20 Recessed groove for horizontal positioning 21 Step for vertical positioning 30 Pin for horizontal positioning 31 Receiving part for vertical positioning

Claims (3)

It is a positioning structure of the master frame and the die plate when the master frame with the mold is attached at a predetermined position on the die plate.
A concave groove for horizontal positioning is provided in the center of the lower end of the master frame, and a step portion for vertical positioning is provided in the center of the side surface of the master frame.
On the other hand, a pin for horizontal positioning that locks to the concave groove is provided at the center of the lower end of the die plate, and a receiving portion for vertical positioning on which the step portion is placed is provided at the center of the side surface of the die plate. hand,
The feature is that the pin is locked in the concave groove to position the master frame in the horizontal direction, and the step portion is placed on the receiving portion to position the master frame in the vertical direction. Positioning structure of master frame and die plate. A mold is attached to the master frame so as to form a steam chamber.
A bulge that communicates with the steam chamber is integrally formed on the upper surface of the master frame, and an opening for accepting utility is formed on the vertical surface of the bulge that faces the die plate.
On the other hand, a box body to which a service pipe for supplying a service to the steam chamber is connected is provided on the upper surface of the die plate, and an opening for receiving the service is provided on the vertical surface of the box body facing the master frame. By forming a utility discharge opening corresponding to
The positioning structure for the master frame and the die plate according to claim 1, wherein the master frame and the die plate are positioned so that the utility receiving opening and the utility discharging opening communicate with each other. A bulge that communicates with the steam chamber is integrally formed on the lower surface of the master frame, and a drain discharge opening is formed on the vertical surface of the bulge that faces the die plate.
On the other hand, a box body to which a drain pipe for discharging drain from the steam chamber is connected is provided on the lower surface of the die plate, and a drain receiving opening corresponding to the opening is provided on the vertical surface of the box body facing the master frame. Form a part,
The positioning structure for the master frame and the die plate according to claim 1 or 2, wherein the master frame and the die plate are positioned so that the drain discharge opening and the drain receiving opening communicate with each other.

Images