JP3157575B2 - Connection mechanism of fluid piping in foam molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for accurately and easily connecting fluid piping in a foaming molding machine such as a piping for supplying and discharging a working fluid such as cooling water or heating steam in a foamed polystyrene molding machine. The present invention relates to a fluid pipe connecting mechanism in a foam molding machine capable of performing the above-described steps.

[0002]

2. Description of the Related Art In a foam molding machine, gases and liquids required for molding such as steam for heating, cooling water and compressed air are supplied to a mold chamber, and the gases and liquids after use are supplied to a mold chamber. Fluid pipes for discharging the fluid pipes from the mold chamber to the outside are required, and these fluid pipes are generally connected by a coupling mechanism using a cam lock.

[0003] However, the connection work of the fluid piping at the time of mold replacement or the like needs to be performed in a hot environment due to radiant heat of the mold, steam, and the like. The workability is poor because the work is carried out in a sluggish manner, and there is a problem that a coupling mistake may be made, and there is a problem that the work is complicated and takes a long time.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and provides an accurate, one-touch, extremely easy and short-time connection of a fluid pipe connection without mounting errors. The present invention has been completed for the purpose of providing a fluid pipe connection mechanism in a foam molding machine which can be performed in a timely manner.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a connecting mechanism for a fluid pipe in a foam molding machine according to the present invention is a mold for connecting a connecting pipe having an engaging groove formed on an outer peripheral surface thereof to a mold. On the back side of the frame, a projecting portion is provided so as to communicate with an internal mold pipe. On the other hand, at a position facing a die plate to which the mold frame is attached, a tip is provided as a sealing surface facing the tip end surface of the connecting pipe body. A pipe and a sliding tube that slides back and forth along the outer surface thereof are provided, and a connecting member that is opened and closed by the forward and backward movement of the sliding tube and is engaged and disengaged with the engaging groove of the connecting tube is provided. The connection pipe and a fluid pipe whose sealing surface is abutted against a distal end surface thereof are closely connected by engagement of the connection member with an engagement groove. In addition, the present invention is applicable to the forward and backward movement of the sliding pipe body (6).
Instead of opening and closing, the connecting member (7) is connected to the sliding tube (6).
Appears freely from the front of the die plate (4) for forward and backward movement
And the connection pipe (2) can be received from above.
It comprises a gutter-like member (17), and the tip of the gutter-like member (17)
The gutter is engaged with the engagement groove (3) of the connecting pipe (2).
When the tubular member (17) is retracted, the connecting pipe (2) is inserted into the fluid pipe (5).
Characterized by being provided with an engaging projection (18) for drawing into
Connecting mechanism for fluid piping in foam molding machine
It is.

[0006]

According to the present invention, the connection between the connecting pipe projecting from the back of the mold frame and the fluid pipe provided on the die plate is performed on the back of the mold frame. At this time, the airtight connection between the fluid pipe and the connecting pipe can be extremely easily performed only by engaging the connecting member with the engaging groove of the connecting pipe by the forward and backward movement of the sliding pipe. .

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an illustrated polystyrene molding machine will be described in detail below. 1 is a mold frame having a molding die, 2 is a connecting pipe body for introducing or discharging a working fluid protruding from the back of the mold frame 1 in communication with an internal mold pipe, and 3 is a connecting pipe. Engaging grooves 4 provided on the outer peripheral surface of the distal end of the tube 2 are die plates. Reference numeral 5 denotes a fluid pipe provided at a position facing the die plate 4 to which the mold frame 1 is attached, and the tip thereof is formed on a sealing surface 5a facing the tip face of the connection pipe body 2; The fluid pipe 5 is provided with a sliding pipe 6 that slides back and forth along the outer surface thereof. Reference numeral 7 denotes a connecting member provided at the distal end of the sliding tube 6, and the connecting member 7 will be described in detail in two embodiments.

That is, the connecting member in the first embodiment shown in FIGS. 1 to 3 is a pair of L-shaped clampers 9 which expand around a pin 8 in response to the forward and backward movement of the sliding tube 6. , 9
The L-shaped clamper 9 is provided at its tip with an engaging projection 10 which engages with the engaging groove 3 of the connecting pipe 2. The sliding tube 6 is usually provided with a spring body 11.
And the L-shaped clampers 9 and 9 are closed, and when air is supplied from the clamp air inlet 12, the sliding tube 6 is advanced to the connecting tube 2 side,
On the other hand, when air is supplied from the unclamping air inlet 13, the sliding tube 6 is retracted. Then, the bent portion 9a of the L-shaped clamper 9 attached to the distal end portion is hooked on the hooking piece 14 by the forward movement of the slide tube 6, so that the L-shaped clamper 9 is It is configured to rotate and expand. As shown in FIG. 3, both ends of the pair of L-shaped clampers 9 are stretched by springs 15 to maintain a strong clamping force.

On the other hand, the connecting member in the second embodiment shown in FIGS. 4 to 7 is composed of a gutter-like member 17 provided with an opening 16 for allowing the connecting pipe 2 to be inserted from above. An engagement projection 18 is provided at the tip of the gutter-like member 17 for engaging with the engagement groove 3 of the connecting pipe 2, and the sliding pipe 6 is engaged after the engagement of the connecting pipe 2. By retreating, the connecting pipe 2 is drawn into the fluid pipe 5 side to be closely connected. When the air is supplied from the clamp air inlet 12 to the sliding tube 6, the sliding tube 6 is retracted from the connecting tube 2 side, while the air is supplied from the unclamping air inlet 13. Then, the sliding pipe 6 is connected to the connecting pipe 2
It is configured to advance to the side. The gutter-like member 1
7 is provided with a spring body 19 between its rear end and the die plate 4, and constantly pulls the gutter-like member 17 rearward to maintain a strong clamping force.

In the first embodiment constructed as described above, the connection between the connecting pipe 2 protruding from the back of the mold frame 1 and the fluid pipe 5 provided on the die plate 4 is performed. Can be efficiently performed on the rear side of the mold frame 1 which has sufficient space and is easy to work, and furthermore, the connection between the two is carried out through the clamp air inlet 12 as shown in FIG. The sliding pipe 6 is supplied to advance the sliding pipe 6 toward the connecting pipe 2, and the pair of L-shaped clampers 9, 9 provided at the distal ends are expanded. In this state, the connecting pipe 2 is moved in the horizontal direction. After insertion, clamp air inlet 1
2 is switched to the air supply to the unclamping air inlet 13 as shown in FIG. 2, the engaging groove 3 of the connecting pipe 2 and the engaging protrusion 10 of the L-shaped clamper 9 are provided as shown in FIG. After the sliding pipe 6 is retracted, the fluid pipe 5 and the connecting pipe 2 are securely connected to each other. Further, the pair of L-shaped clampers 9 and 9 are Has a strong clamping force, and the spring body 11
As a result, the connecting pipe body 2 is always subjected to a tensile force in the direction of the fluid pipe 5, and a strong connection state is maintained.

Next, in the second embodiment shown in FIG. 4, air is supplied from the unclamping air inlet 13 to advance the sliding tube 6 toward the connecting tube 2 and to move the sliding tube 6 forward. The gutter-like member 17 provided in the portion protrudes from the wall surface of the die plate 4, and the connecting pipe 2 is connected to the opening 1 of the gutter-like member 17.
6, the air supply to the unclamping air inlet 13 is stopped, and the air supply is switched to the air supply to the clamping air inlet 12, as shown in FIG. While the engaging groove 3 and the engaging projection 18 of the gutter-like member 17 are engaged, the trough-like member 17 retreats with the retreat of the slide tube 6 and the fluid pipe 5 and the connecting pipe 2
Are connected reliably, and the connecting pipe body 2 is always subjected to a tensile force in the direction of the fluid pipe 5 by the spring body 19 to maintain a strong connection state.

In the embodiment, as shown in FIG. 8, the mold exchanging operation is performed by temporarily connecting the pair of mold frames 1 and 1 having the concave and convex molds respectively with, for example, bolts 20 and then hoisting the entirety of the hoist 21. And presses against the fixed-side die plate 4 on the left side in the figure and very easily connects the fluid pipe 5 and the connecting pipe 2 by the connecting operation of opening and closing the pair of L-shaped clampers 9, 9. After that, the die frames 1 and 1 are moved by the hoist 21 to the die plate 4 on the moving side on the right side in the drawing.
After moving to the mold frame 1, 1
The fluid pipe 5 and the connecting pipe 2 can be very easily connected by the connecting operation of dropping the fluid pipe and retreating it. In this way, it is possible to accurately and quickly connect the supply pipes for gas and liquid such as heating steam, cooling water, and compressed air necessary for molding, and their discharge pipes after use. Becomes

[0013]

As is clear from the above description, in the present invention, the connection of the fluid piping can be performed accurately, easily and quickly with one touch without causing a mounting error. In addition, the mold exchange operation, which has conventionally been complicated, can be performed accurately and in a short time without causing a connection error. Therefore, the present invention greatly contributes to industrial development as a fluid pipe connecting mechanism in a foam molding machine that has eliminated the conventional problems.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing a first embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing an operation state of the first embodiment .

FIG. 3 is a front view showing a connecting member according to the first embodiment .

FIG. 4 is a partially cutaway side view showing a second embodiment.

FIG. 5 is a partially cutaway side view showing an operation state of the second embodiment .

FIG. 6 is a front view showing a connecting member according to a second embodiment .

FIG. 7 is a front view showing a die plate according to a second embodiment .

FIG. 8 is an overall side view showing a mold changing operation.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 44/00-44/60 B29C 67/20, 33/04 F16L 37/12

Claims (3)

(57) [Claims] 1. A connecting pipe body (2) having an engaging groove (3) formed on an outer peripheral surface thereof is protruded from a back surface of a mold frame (1) so as to communicate with a mold pipe. At the position opposite to the die plate (4) to which (1) is attached,
Fluid piping with a sealing surface (5a) facing the tip surface of (2)
(5) and a sliding pipe (6) that slides back and forth along the outer surface thereof, and is opened and closed by the forward and backward movement of the sliding pipe (6), and the engaging groove of the connecting pipe (2) is provided. (3) is provided with a connecting member (7) to be engaged and disengaged, and the connecting pipe (2) and a fluid pipe (5) having a sealing surface (5a) abutting against a tip surface thereof are connected to the connecting member (7).
A fluid pipe connection mechanism in a foam molding machine, characterized in that the pipe (7) and the engagement groove (3) are tightly connected by engagement. 2. A connecting member (7) comprising a pair of L-shaped clampers (9), (9) which expands around a pin (8) in response to the forward and backward movement of a sliding tube (6). L-shaped clamper
2. A fluid pipe in a foam molding machine according to claim 1, wherein an engagement projection (10) engaging with the engagement groove (3) of the connecting pipe (2) is provided at a tip end of (9). Coupling mechanism. 3. A sliding tube (6) that opens and closes in accordance with the forward and backward movement of the sliding tube (6).
That in place of the connecting member (7) is a retractable from the front surface of the die plate (4) in response to longitudinal movement of Suridokantai (6)
And a gutter-like member (17) capable of receiving the connecting pipe (2) from above , and the leading end of the gutter-like member (17) has an engaging groove formed in the connecting pipe (2). (3) being engaged with the gutter-shaped member
2. A connection mechanism for a fluid pipe in a foam molding machine according to claim 1, wherein an engagement projection (18) for drawing the connection pipe body (2) into the fluid pipe (5) when retreating is provided. .