JPS5845935B2 - Plastic mold for continuous molding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plastic mold for continuous molding in which, for example, a used plastic product is melted and poured into a mold to be remolded into a pile, a parapet, or the like.

Conventional plastic molds for this type of continuous bottom type include endless chain winding around sprockets arranged horizontally apart from each other, multiple mold attachments over the entire length of the endless chain, and one end of the endless chain on the upper side. Some were equipped with a material injection device at one end and a molded product removal device at the other end.

This product has a large number of molds installed over the entire area between the molded product take-out device and the material injection device, which are buttoned on the upper side of the endless chain, resulting in an unnecessary increase in the number of molds. However, it had the disadvantage of being expensive.

In other words, the number of molds extending between the material injection device and the molded product removal device on the lower side of the endless chain corresponds to the time it takes for the injected material to harden, so this cannot be reduced. , the molds on the upper side of the endless chain have already been taken out of molded products, and are completely idle molds.

This invention was made in view of the above-mentioned circumstances, and a mold fast-forwarding device is provided between the molded product take-out device and the material injection device, which are buttoned on the upper side of the endless chain, and the molded product is removed by this mold fast-forwarding device. A plastic mold for continuous molding that is inexpensive because it can reduce the number of molds without degrading the continuous molding function by rapidly feeding near the material injection device 1 without passing through the endless chain of molds that have passed through the device. The purpose is to provide

In order to achieve the above object, the present invention is characterized by the following configuration.

That is, an endless chain is wound around sprockets spaced apart from each other in the horizontal direction, and a number of metal molds are removably engaged with the endless chain. A material injection device for injecting material into the arriving mold is provided, and the mold that has arrived at the starting end is moved upwardly from the endless chain, and is placed at the upper side of the endless chain and at the transport start end. A molded product take-out device is provided for taking out the molded product in the mold, and is provided on the upper side of the endless chain and between the molded product take-out device and the material injection device, and extends between the two and takes out the molded product. A mold fast-forwarding device having a feeding function is provided from the device to the material injection device, and the mold is carried in from the mold fast-forwarding device to a portion at the terminal end of the mold fast-forwarding device and on the carry-in start end side of the material injection device. This is a plastic mold for continuous molding that is equipped with a mold mounting device that lowers the mold and places and locks it on the endless chain directly below.

The present invention will be described in detail below based on illustrated embodiments.

Continuous molding plastic mold 1B, mold process device 10,
Mold device 20, material injection device 30, molded product removal device 40
, a mold rapid feed device 50, and other devices.

As shown in FIG. 1, the mold forming device 10 is arranged on the front and back (left and right) of the upper part of the pedestal 2, which is formed by framing a columnar body in the shape of a rectangular parallelepiped.
a sprocket 11 rotatably attached to each end;
It has an endless chain 12 wound around these sprockets 11, and has a feed cylinder 13 at the left end, that is, the front end of the upper side 12a of the endless chain 12, for intermittently rotating the endless chain 12 in a counterclockwise direction. There is.

A large number of mold mounting plates 14 are fixed at equal pitches over the entire length of the endless chain 12 on the outer peripheral surface thereof.

Next, as shown in FIGS. 1 to 3, the mold device 20 has a soil button and a lower surface of a mold 21 that can be disassembled vertically (split mold) and has a surface area larger than the plane area of the mold. The upper base 22 and lower base 23 of the area are fixed, and these upper and lower bases 22
．． Five sets of mold clamping fittings 24 are provided in the longitudinal direction of the outer surface of 23.
will be established.

The mold clamping fitting 24 includes a pair of locking arms 24d, which are supported on the lower base 23 side via a support fitting 24a so as to be swingable in the front and rear (width) direction of the mold 21, and a pair of locking arms 24d, which are fixed to the upper base. This locking metal fitting 24c consists of a
Both ends of the locking arm 24c protrude outward from the front and rear ends of the upper base 220, and a ring (a) is formed in this protrusion, and the head of the locking arm 24b is removably engaged within the ring (a).

b is a locking nut screwed onto the head of the locking arm 24b.

Further, a mold locking plate 25 having a slightly smaller area than the lower base 23 is fixed to the lower surface of the support fitting 24a, and locking pins 26 are provided to hang down and protrude from the left and right lower ends of the mold locking plate 25.

This locking pin 26 is fitted into locking holes 14a bored at the left and right ends of the mold mounting plate 14 fixed to the outer peripheral surface of the endless chain 12, and the locking pin 26 is inserted into the locking hole 14a formed in the left and right ends of the mold mounting plate 14 fixed to the outer peripheral surface of the endless chain 12. A locking fitting 27 biased by a spring is removably engaged with the small diameter handle C formed on the lower surface side of the mold mounting plate 14.

Two molded product extrusion tools 28 are provided in the middle part of the upper base 22 in the longitudinal direction, and these molded product extrusion tools 28 can protrude into the mold 21 against the repulsive force of the spring. A push pin 28a and a cylinder 2 that loosely fits and supports the push pin 28a.
8b.

In addition, in FIG. 2, a funnel-shaped material filling part 21 is provided on the soil wall (upper mold) of the mold 21 corresponding to the molded product extrusion tool 28 on the left side.
A is formed, and when the mold 21 is separated in the vertical direction, the molded product is attached to the upper mold (upper mold) side.

Reference numeral 29 denotes a material injection part provided on the right end side of the mold 21, and has a slide shutter 29a for opening and closing the material injection port d.

Namely, this material injection port d part is also a funnel-shaped material filling part 21b.
is formed.

Next, as shown in FIG. 1, the material injection device 30 is disposed above the front end (left side in the figure) of the upper side 12a of the endless chain 12, and the injection cylinder 31 is moved up and down by hydraulic cylinder 32. movably supported.

Further, an injection port opening/closing mechanism 33 that moves up and down together with the injection cylinder 31 is attached to the lower part of the injection cylinder 31.

The injection port opening/closing mechanism 33 includes a sliding shutter 35 that opens and closes the injection path of the injection cylinder 31 via a hydraulic cylinder 34, and an operating claw 3 provided at the front and rear ends of the shutter 350.
6.37, the operating claw 36 at the front end engages with the rear end of the slide shutter 29a attached to the mold device 20 when descending, and the operating claw 37 at the rear end engages with the front end of the slide shutter 29a when descending. It is designed so that it can be locked in the section.

Then, when the injection cylinder 31 descends and injects the material,
The hydraulic cylinder 34 is shortened to move the shutter 35 to the left in FIG. Open the material injection port d of the mold 21.

When the injection of the material is completed, the hydraulic cylinder 34 is extended to move the shutter 35 to the right to close the injection cylinder 31, and at the same time move the slide shutter 29a to the right via the actuating claw 37. The material injection port d is closed.

Next, the molded product removal device 40 is arranged above the rear end portion (right side in FIG. 1) of the upper side 12a of the endless chain 12,
As shown in FIGS. 21 and 3.

That is, this molded product removal device 30 has a long mold hanging stand 41 disposed within a gate-shaped frame 3 erected at the rear end of the pedestal 2, and the center thereof is placed at the center of a cross spar 3a on the upper part of the frame 3. A pair of guide bars 43 are attached to both ends of the upper surface of this mold suspension stand 41, and the upper part of the guide bars 43 is connected to a hydraulic cylinder 42 attached to the mold suspension stand 41 so that it can move up and down. A pair of synchronizers penetrating in the vertical direction and having racks d on each of its longitudinal and side surfaces, rotatably supported on the racks d by the cross spar 3a via bearings e, and integrally connected to each other. The pinion 44 is in mesh.

Furthermore, five sets of mold disassembly fittings 45 corresponding to the mold clamping fittings 24 described above are attached to the upper surface side of the mold hanging stand 41 in the longitudinal direction.

This mold disassembly fitting 45 consists of a pair of front and rear supports that are swingably supported in the longitudinal direction C (width) direction of the mold 21 via a pin f to a support fitting 45a fixed to the upper surface of the mold suspension stand 41. There is no release arm 45b, and when the release arm 45b is not activated, each pair of release arms 45b hangs down due to their own weight in an angular shape inclined at an angle of about 300 degrees in opposite directions with respect to the vertical line. When the release arm 45b descends, the lower end of the release arm 45b slides on the upper surface of the locking fitting 24c on the mold clamping fitting 24 side and expands, pushing the head of the locking arm 24b outward (back and forth). This is then released and activated (as shown by the imaginary line in Figure 3).

Hydraulic cylinders 4 are installed at both longitudinal ends of the mold suspension stand 41.
An L-shaped hanging fitting 47 that is swing-moved by a hydraulic cylinder 46 is attached. is actuated inward to lock both ends of the upper base 22 of the mold 21 with its claws 47a, and at the appropriate time, the lower part of the hanging fitting 47 is actuated outward by the shortening operation of the hydraulic cylinder 46. The engagement with the upper base 22 is now released.

In addition, a through hole 41a and an extrusion rod 48 are provided in the mold hanging stand 41a and the cross par 3a corresponding to the molded product extrusion tool 28 provided on the upper base 22 of the mold 21, so that the mold hanging stand 41 is When the upper part of the molding device 20 is lifted together with the molded product, the extrusion rod 48 passes through the through hole 41a and presses the molded product extrusion tool 28 downward, and the molded product A is lifted up into the molding device 20. It is designed to be removed from the top side.

Further, a mold assembly mechanism 49 is provided at the intermediate portion of the support column 3b of the frame 3 described above.

As shown in FIGS. 2 and 3, this mold assembly mechanism 49 supports a pair of front and rear rotating bars 49a directly above the mold clamping fittings 24 via stays 30 between each column 3b. Then, five assembly arms 49b are arranged and fixed to each of these rotary pars 49a in correspondence with the mold clamping fittings 24,
Each rotary bar 49a is connected at one end (on the left side in FIG. 2) to a hydraulic cylinder 49d via a link arm 49c.

The link arm 49c has a W-shape in side view, and when the hydraulic cylinder 49d is shortened, the assembly arm 49b
is rotated from the outside of the mold clamping fitting 24 toward the inside (as shown by the imaginary line in FIG. 3).

Next, the fast forwarding device 50 is constructed as shown in FIG.

That is, the second endless chain 51 is placed above and in parallel with the upper side 12a of the endless chain 12 that extends between the material injection device 30 and the molded product removal device 40.

This second endless chain 51 is wound between sprockets 51a and 5ib provided at the front of the material injection device 30 and immediately after the molded product take-out device 40, and the front sprocket 51a is connected to the motor 52. connected.

When the mold device 20 from which the molded product has been removed is placed on the rear end of the second endless chain 51, the motor 52 is driven by the operation of the limit switch.

As a result, the circumferential speed of the second endless chain 51 is increased more than that of the endless chain 12, so that the mold device 20 placed above is moved forward faster than the other ones. be.

Further, a push pawl 53 for positioning is protruded and fixed to the second endless chain 51, and this push pawl 53 comes into contact with the rear end of the mold device 20 placed above, and 20
from the second endless chain 51 to the mold mounting device 7, which will be described later.
0, the rear end of the mold device 20 is pressed to accurately place it in the proper position of the mold mounting device 70.

Next, as shown in FIG. 2, a mold release device 60 is attached to the pillar 3b of the frame 3 described above, and this mold release device 60 connects the mold device 20 and the endless chain 12. It consists of a release body 61 that releases the connection, and a removal cylinder 62 that lifts up the mold device 20 and removes it from the endless chain 12.

The release body 61 is a lock fitting 2 attached to the mold mounting wave 14.
The mold mounting plate 1 is fixed to the part of the support 3b facing the
4 reaches the position of the support post 3b, the lock fitting 27 collides with the release body 61, rotates in the opening direction, and separates from the handle C of the locking pin 26. There is.

Further, the detachment cylinder 62 is attached to the support column 3b, and an engaging claw 62b that supports the lower surface of the mold locking plate 25 is fixed to the lower end of the operating rod 62a.

Reference numeral 63 designates a claw body that is fixed to the support column 3b and engages with the upper surface of the lower base 23, and clamps and fixes the lower base 23 at its end when the engaging claw 62b moves upwardly.

Next, a mold mounting device 70 is provided on the upper side 12a of the endless chain 12 between the rapid feed device 50 and the material injection device 30, as shown in FIG.

This mold attaching device 70 is for locking the mold device 20 sent by the fast forwarding device 50 to the above-mentioned upper side 12a of the endless chain 12. The front frame 3d includes a second release body (not shown) and a mounting cylinder 71 on both sides.

This mold attaching device 70 has substantially the same configuration as the mold detaching device 60 described above, and the second release body is the mold attaching device 7.
The lock fitting 27 of the mold mounting plate 14 that has reached the 0 position is operated in the release direction, and the mounting cylinder 71 lowers the mold device 20 received from the rapid feed device 50 and locks the locking pin 2 of the mold device 20.
6 is inserted into the locking hole 14a of the mold mounting plate 14.

After the lock fitting 27 passes through the frame 3 and the front frame 3d, the collision with the release body is canceled and the lock fitting 27 returns to the locking direction due to the reaction force of an elastic body (not shown).

Next, a molded product receiving device 80 is provided at the rear end of the pedestal 2, as shown in FIG.

This molded product receiving device 80 includes a receiving plate 81 that can be retracted from the rear at a position below the mold hanging stand 41 that has moved upward, an L-shaped guide rail 82 that supports this receiving plate 81 via rollers 81a, and A drive chain 83 that moves the receiving plate 81 along the guide rail 82 and this drive chain 8
3 and a motor 84 capable of forward and reverse rotation, which drives a sprocket 83a wound with a sprocket 83a.

The guide rail 82 has its rear part standing up in the vertical direction,
Its front part extends horizontally, and when the receiving plate 81 moves forward, it extends horizontally to receive the falling molding amount, as shown by the imaginary line in FIG. When it moves backward, it tilts backward at an angle of about 45 degrees as shown by the solid line in the same figure, so that the received molding amount is transferred and dropped backward.

Reference numeral 4 in FIG. 1 denotes a cooling liquid tank fixed to the lower part of the frame 2, in which the mold device 20 fixed over the entire length of the lower side 12b of the endless chain 12 is immersed, and the material filled therein is cured. belongs to.

In addition, two suspension rollers 15 are fixed to the lower surface of the mold mounting plate 14 in the longitudinal direction, and the rollers 15 are attached to a suspension frame installed on the pedestal 2 in the front and back direction, as shown in FIG. It rolls within the rail 5 and prevents the lower side 12b of the endless chain 12 from descending due to the load of the mold device 20 and the like.

Next, the operation of the configuration described above will be explained.

The intermittent movement of the feed cylinder 13 causes the endless chain 1 to
2. Therefore, the mold device 20 is intermittently fed forward.

Then, when the mold device 20 comes to a position below the material injection device 30, the hydraulic cylinder 32 is extended and the material injection tube 31 and the spout opening/closing mechanism 33 are lowered, and the injection tube 31 is placed under the mold device 20. The material injection part 29 of the injection port 29 abuts thereon, and the operating claws 36 and 37 of the injection port opening/closing mechanism 33 come close to the end of the slide shutter 29a.

Then, the shutter 35 is opened by the shortening operation of the hydraulic cylinder 34.
The slide shutter 29a is operated in the opening direction to open the injection cylinder 31 and the material injection part 29, and at the same time, the material is filled into the mold 21 from the material injection device 30.

This checking of the filling degree is carried out by a detection device consisting of a piston-type detection body provided at the left end of the mold 21 in FIG. In response to the completion signal from this detection device, the hydraulic cylinder 33 is extended in the opposite manner to that described above, and the slide shutter 29a1 and the shutter 35 are closed, thereby closing the injection cylinder 31 and the material injection portion 29.

Thereafter, due to the shortening operation of the hydraulic cylinder 32, the barrel 31
- and the injection port opening/closing mechanism 33 moves upward and away from the mold device 20.

Next, the feed cylinder 13 is extended again to send the next mold device 20 to a position below the material injection device 30, and the above operation is repeated thereafter.

The mold device 20 filled with material by the material injection device 30 is sequentially sent rearward while submerged in the cooling liquid tank 4.

The mold device 20, which has passed through the coolant tank 4 and the material in the mold 21 has hardened, floats up from the coolant tank 4 and arrives at the frame 3 portion.

When the mold device 20 reaches the frame 3 part, the lock fitting 2T is first rotated in the opening direction by the release body 61, and then the release cylinder 62 of the mold release device 60 is shortened.
The engaging claw 62b moves upward to lift the mold locking plate 25 and separate it from the mold mounting plate 14, and the lower base 2
3 is clamped and fixed between the claw body 63 and the engaging claw 62b.

Next, the mold suspension stand 41 of the molded product removal device 40 is lowered by the extension operation of the hydraulic cylinder 42, and the release arm 45b attached thereto slides outward and expands along the upper surface of the locking fitting 24c. The locking arm 24b is rotated outward (to the state shown by the imaginary line in FIG. 3), the locking latch b is released from the locking ring 24c, and at the same time, the hydraulic cylinder 46 is extended and the hanging bracket 4 is moved.
7 in the locking direction, and its claw portion 47a engages with the upper base 22 of the mold 21 (as shown by the imaginary line in FIG. 2).

Next, the mold suspension stand 41 is moved by the shortening operation of the hydraulic cylinder 42.
is lifted up, and along with this, the upper part C (upper mold) of the mold device 20 is lifted up.

In this case, the molded product has funnel-shaped material filling parts 21a and 21b at the upper end of the upper side of the mold device 20, so these parts engage with the upper side, and the molded product has the upper end. It will stick to the side and be lifted up.

The amount of rise of the molded product is determined by the rotating bar 49a of the mold assembly mechanism 49.
When the position has risen slightly upward, the motor 83 is driven to operate the molded product receiving device 80, and the receiving material 81 is placed horizontally directly below the molded product A.

In this state, the mold hanging stand 41 continues to be lifted up further, and when it is lifted up near the cross spar 3a of the frame 3, the push rod 48 is inserted through the through hole 41a of the mold hanging stand 41, and further the mold device This will collide with the molded product extrusion tool 28 attached to the upper base 22 of 20.

As a result, the molded product extrusion tool 28 is inserted into the funnel-shaped material filling section 21.
A is forcibly pressed downward, and the molded product person is separated from the mold device 20.

The detached molded product falls onto the receiving plate 81, and is carried out to the outside by the reversal of the motor 83 and the backward tilting operation of the receiving plate 81.

Next, the mold suspension stand 41 is moved by the extension operation of the oil modilinder 42.
is lowered, and the upper part of the mold device 20 is on standby.
After the assembly arm 49 is superimposed on the lower part (lower mold) of the
b rotates downward, collides with the locking nut b of the locking arm 24b from the outside, moves this with the upper surface 1 of the locking metal fitting 24c, and assembles the upper and lower parts of the mold device 20,
Thereafter, the assembly arm 49b is moved upward and horizontally by the extension operation of the hydraulic cylinder 49d.

Next, the detachment cylinder 62 performs a slight extension operation, and after the engagement between the engagement claw 62b of the lower base 23 and the claw body 63 is released, the second endless chain 51 is driven by starting the motor 52.

At the same time, the feed cylinder 13 is extended and the wireless chain 12 is pressed and rotated to the left in FIG.

As a result, the assembled mold device 20 is pressed and moved to the left in FIG. 51 and placed on the mold mounting device 70.

The mounting position on the mold mounting device 70 is determined by pressing the push pawl 53 attached to the second endless chain 51 onto the front end sprocket) 5.
This is done precisely by pressing the rear end of the mold device 20 as it pivots along 1a.

The mold device 20 placed on the mold mounting device 70 is moved to the mold mounting plate 1 directly below by the extension operation of the hydraulic cylinder 71.
The locking pin 26 at the bottom of the lower base 23 is inserted into the locking hole 14a of the mold mounting plate 14, and in this state, immediately after passing through the front frame 3d, the locking fitting 27 is activated. integrally connected.

Thereafter, the mold 21 is returned to the position of the material injection device 30, and the material is filled into the mold 21 in the same manner as described above.

By sequentially repeating the above operations and actions, molded products such as piles or handrails are continuously formed.

As explained above, in this invention, the mold from which the molded product has been taken out is quickly conveyed from the position of the material injection device by the rapid transport device, so that the mold is transported from the molded product removal device to the material injection device. The large number of molds installed on the upper side of the mold feeding device, that is, the upper side of the endless chain, can be omitted, and the cost can be significantly reduced, especially for plastic molds for continuous molding that require expensive split molds. This has the effect of reducing the

In addition, the rapid feed device according to the present invention may be provided with a slide rail with the molded product ejecting device side at a high position and the material injection position side at a low position, and the mold may be slid through the slide rail due to its own weight. good.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional side view of essential parts of the continuous mold molding machine according to the present invention, Fig. 2 is an enlarged sectional view taken along the line ■-■, and Fig. 3
The figure is a sectional view of the main part taken along the line ■-■ in FIG. 2. 1...Plastic mold for continuous molding, 2...
... Frame, 3... Frame, 4...
Cooling tank, 5...Suspension rail, 10...
Mold feeding device, 11... Sprocket, 12.
... Endless chain, 12a ... Upper side,
12b...Lower side, 13...Feed cylinder 14...Mold placement plate, 14a...
- Locking hole, 15... Suspension roller, 20...
...Mold device, 21...Mold, 22...
・Upper base, 23...Lower base, 24...
...Mold clamping fitting, 24a... Supporting fitting,
24b... Locking arm, 24c... Locking metal fitting, 25... Mold locking plate, 26...
・Latching pin, 27...Lock fitting, 28...
...Molded product extrusion tool, 29...Material injection part, 2
9a...Slide shutter, 30...
Material injection device, 31... Injection tube, 32...
...Hydraulic cylinder, 33...Inlet opening/closing mechanism,
34... Hydraulic cylinder, 35... Shutter, 36. 37... Operating claw, 40 Molded product removal device, 41... Mold suspension stand, 42 ...Hydraulic cylinder, 43...Guide bar, 44...
... Synchronous pinion, 45 ... Mold disassembly fitting,
45a... Support metal fitting, 45b... Release arm, 46... Hydraulic cylinder, 47...
...Hanging fitting, 48...Extrusion rod, 49...
... Mold assembly mechanism, 49a ... Rotating bar 49
b...Assembly arm, 49c...Link arm, 49d...Oil modilinder, 50...
...Rapid feed device, 51...Second endless chain, 51a, 51b...Sprocket, 52...
...Motor, 53...Press pawl, 60...
Mold release device, 61... Release body, 62...
...Removal cylinder, 62a...Operating rod, 6
2b...Engaging claw, 63...Claw body, 70
...Mold mounting device, 71 ... Hydraulic cylinder, 80 ... Molded product receiving device, 81 ...
... Receiving board, 81a ... Roller, 82 ...
・・Guide rail, 83 ・・・Drive chain%
a3a... Sprocket, 84... Motor, A... Hollow-shaped mouth 0

Claims (1)

[Claims] 1. An endless chain is wound around sprockets spaced apart from each other in the horizontal direction, and a number of molds are removably locked to the endless chain, and A material injection device for injecting material into the arriving mold is provided, and the mold that has arrived at the starting end is moved upwardly from the endless chain and is placed at the upper side of the endless chain and at the transport start end. A molded product take-out device is provided for taking out the molded product in the mold, and is provided on the upper side of the endless chain and between the molded product take-out device and the material injection device, and extends between the two and takes out the molded product. A mold rapid-feeding device having a feeding function from the device to the material injection device is provided, and the mold is carried from the mold rapid-feeding device to a portion at the terminal end of the mold rapid-feeding device and on the transport start end side of the material injection device. A continuous bottom plastic mold that is equipped with a mold mounting device that lowers the mold and locks it onto the endless chain directly below.