JPH0745117B2 - Continuous ejection type self-weight pressurizing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is suitable for continuous take-out self-weight used for adhering products to each other, for pouring resin into products for foaming, or for pouring concrete. The present invention relates to a pressure device.

[Conventional technology]

Applying a certain amount of pressure to a product for a certain period of time is a necessary operation when adhering products to each other or between a product and another member, or filling the inside of a product with foamed resin to foam it. However, in the past, this operation was performed by two methods: a continuous method in which the product is flowed in a line between pressurizing devices and a batch method in which the product is sandwiched between multi-stage presses and pressurized.

[Problems to be Solved by the Invention]

In the case of the continuous type, there is a drawback that the pressurizing device becomes very long in order to secure a predetermined pressurizing time, and in the batch type, the setup must be changed for each batch, so that the efficiency cannot be improved. was there. For example, taking the manufacture of foamed resin filled panels as an example, in the continuous type, the coiled panel material (thin metal plate) is fed out in a line to perform roll molding, foaming liquid injection, foaming, cutting and other operations consistently. However, since it is continuous molding using molding rolls, it is not possible to use ridges, grooves, etc. formed on the surface that have uneven widths, depths, etc. There was a drawback that it had to be a line. In addition, the line equipment becomes very long, and it is necessary to maintain heat and pressurize and hold it over almost the entire length of the line, resulting in large space requirements and equipment costs.

On the other hand, in the batch method, the panel products that are molded and temporarily assembled are inserted into each stage of the multi-stage press, the foaming liquid is injected while maintaining a constant temperature and pressure, and this state is maintained for a certain period of time for foaming.
Since it is separated from the molding process, any cross-sectional shape can be used, but on the other hand, setup change must be performed for each batch, which is a disadvantage of inefficiency. Also, since foam debris adheres to the surface plate (multi-stage press), it must be cleaned and removed when changing the setup, but the vertical spacing between each surface plate is approximately 80 to 12
Since it is as narrow as 0 mm, it is difficult to insert a cleaning tool, etc. Therefore, it takes a very long time to clean it. Furthermore, there was a problem that there was play time during the foaming operation.

By the way, recent building parts such as shutters and doors are diversified and diversified, and most of them have extremely complicated cross-sectional shapes that cannot be formed by the continuous method, so most of them are foamed by the batch method. The method is adopted. The biggest drawback of the batch method is the inefficiency as described above, but as an example, in the case of stacking 10 sheets, the following time is required until the foaming is completed.

Inserting the product into each standard stage: 1 minute Preheating the product: 1.5 minutes Injecting the foaming liquid: 0.8 minutes (5 seconds for one sheet, 5 x 10 = 50 for 10 sheets) Cure (foaming) time ... 5 minutes Product removal ...... 1 minute Surface plate cleaning ...... 10 minutes Total ...... About 20 minutes In other words, it takes about 20/10 = 2 minutes to foam each sheet.

Therefore, the present invention embodies a continuous take-out type self-weight pressurizing device that employs the advantages of both batch type and continuous type.

[Means for Solving the Problems]

In order to solve the above problems, the present invention has taken the following means.

A continuous take-out type pressurizing device for continuously taking out these products after applying a constant pressing force to the products for a certain period of time. Are sequentially inserted under a certain number of stacked stages to apply pressure by the weight of the product mounting surface plate group that has been stacked, and the uppermost product mounting surface plate is sequentially unloaded and continuously ejected by self-weighting. Pressure device.

In the above, the continuous take-out type self-weight pressurizing device in which the product mounting surface plates are stacked in a thermostatic chamber and a constant temperature is applied to the products.

Are provided respectively.

[Action]

By taking the above means, the pressurizing force and the pressurizing time required for the product can be secured by the number of stacking stages of the product placing platen having a predetermined weight, so that no special pressurizing device is required. The product after pressing can be taken out continuously.
Further, by stacking the product mounting plates in a temperature-controlled room or the like, it is possible to apply a constant temperature during the pressurizing time.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings by taking an example of manufacturing a foamed resin filled panel.

FIG. 1 is a perspective view showing a manufacturing process of a foamed resin filled panel,
2 to 4 are a front view, a plan view and a side view of the manufacturing apparatus. The manufacturing apparatus includes a carry-in device 1, a foaming device 2 and a carrying device.
3. Consists of a carry-out device 4 and a cleaning-back device 5.

The carry-in device 1 is a product that is formed into a predetermined temporary assembly shape and has a space inside which a foaming liquid can be injected (here, the panel product 6a
(Referred to as “equipment”) is carried in to the temperature-controlled room 7 for foaming, and a carry-in conveyor 8 to the temperature-controlled room 7 is laid in advance.
A product placing platen (hereinafter simply referred to as a platen) 9 on which the panel product 6a is placed at a constant loading position by the carry-in conveyor 8.
To the temperature-controlled room 7.

The foaming device 2 is a panel product 6a that has been brought into the temperature-controlled room 7.
This is a device for injecting a foaming liquid into the foam and foaming it. The structure is such that a constant temperature room 7 (40 ° C. to 60 ° C.) (a certain area on the inlet side is a preheating room 7 a) is provided, and a platen 9 that has been loaded with the panel product 6 a is loaded. Is stopped at a predetermined position in the temperature-controlled room 7. At this position, the surface plate 9 is lifted from below by a lift 10, the lifted part is locked by a hook 11, a space is formed below this, and the surface plate 9 carried into this space is inserted. Repeat this operation for panel product 6a
The surface plates 9 with the above are placed in a predetermined stack. At this time, a dressing machine 12 may be provided around the surface plates 9 in order to align the inserted surface plates 9 with the steps of the already stacked surface plates 9. Next, from the bottom, a certain level of panel product 6a
The injecting machine 13 injects the foaming liquid into the container, and the foaming liquid is transferred to a certain position and foamed while being piled up.
In order to foam the injected foaming liquid, it is necessary to maintain the condition at a constant temperature and for a constant time under a constant pressurizing condition. It is secured by the number of stacking stages based on the above and transfer time to the upper side. FIG. 5 is an explanatory view of the injection machine 13. The two foaming liquids of the P liquid and the R liquid stored in the tanks 14 and 15 are sent to the injection head 18 by the pumps 16 and 17, respectively. Is inserted into the injection hole of the panel product 6a and injected while mixing the two liquids. Note that the surface plate 9 used here has a surface that directly contacts the panel product 6a, and therefore requires considerable flatness and smoothness. Therefore, it is desirable to perform surface treatment such as hard chrome plating. Further, such treatment also facilitates removal of the foaming liquid adhering to the surface.
FIG. 6 is an explanatory view for keeping the temperature-controlled room 7 at a constant temperature. The hot water heated by the hot water boiler 50 is circulated between the heat exchanger 52 by the pump 51 and the heat exchanger 52. 52
The warm air, which has been absorbed by, is circulated between the constant temperature chamber 7 and the fan 53. Then, a bypass passage 54 is provided in the circulation path from the hot water boiler 50 to the heat exchanger 52, and the switching valve 55 provided at this branch point is switched to adjust the temperature. The switching valve 55 is operated by detecting the temperature and humidity in the temperature-controlled room 7 by a temperature sensor 56 and a humidity sensor 57 that directly contact the surface plate 9 and automatically by an electric signal emitted from a central controller 58 ( (See Figure 10). By the way, at this time, in order to keep the room temperature of the temperature-controlled room 7 as uniform as possible, warm air is blown on the platen 9.
Make sure that the air is blown out from around the bottom of the and the air is exhausted from above. Further, although not shown, if a fan or the like is provided above the temperature-controlled room 7 and agitated with this, the room temperature is further homogenized. FIG. 7 is a cross-sectional view showing the relationship between the lift 10 and the hook 11 as described above. Two hooks 11 are provided on each side of the carry-in conveyor 8 so that the surface plate 9 is located slightly higher than the carry-in position. It is supported from. For this reason, a hook shaft 59 having a hook 11 fixedly mounted on the outside of the carry-in conveyor 8 is pivotally supported in parallel with this, and the hook shaft 59 is rotated by an air cylinder 60 to disengage the hook 11 from the surface plate 9. To do. That is, when a new surface plate 9 on which the panel product 6a is placed is carried in, the lift 10 is raised by the hydraulic cylinder 61 or the like to lift the surface plate 9. When the surface plate 9 reaches the lower side of the surface plate 9 supported by the hooks 11, the air cylinder 60 is operated to disengage the hooks 11 from the surface plate 9. In this state, all the stacked surface plates 9 are lifted up by the lifts 10 onto the hooks 11. Next, when the hook 11 is returned to the original position and the lift 10 is lowered, the surface plate 9 that has been carried in is at the bottom of the stack, and the entire hook is supported by the hook 11. At this time,
Make the surface plate 9 lifted by the lift 10 as close as possible to the surface plate 9 supported by the hooks 11 (in other words, make the thickness of the hooks 11 as large as possible).
The insertion portion 11a of the hook 11 is formed in a tapered wedge shape, and a large chamfered inclined portion 9a is formed at the upper end of the surface plate 9 into which the insertion portion 11a is inserted. In this way, when the surface plate 9 is lifted up, the inclined portion 9a pushes up the insertion portion 11a, which facilitates its removal. Further, the hook shaft 59 is positioned outside and below the surface plate 9 so that even if the air cylinder 60 has a malfunction, the weight of the surface plate 9 causes the hook 11 to rotate in the engaging direction. Keep safe. The stopper 62 prevents the hook 11 from rotating more than necessary. FIG. 8 is a side view of the spacer 63 for keeping the space between the surface plate 9 and the surface plate 9, and FIG. 9 is a front view. The spacer 63 is supported on the inclined portion 9a of the surface plate 9 by the bracket 64. It is configured to be rotatable around a supported support shaft 65. That is, when the panel product 6a is placed or removed, the spacer 63 sometimes becomes an obstacle, but in such a case, it is not an obstacle if the spacer 63 is rotated and taken out of the surface plate 9. ， Neither dissipated. The spacer 63 is a surface plate 9
It suffices that about four be provided at the end of the table, and when rotated, the highest part thereof should be lower than the upper surface of the surface plate 9. FIG. 10 is an explanatory view showing the more specific contents of the injection machine 13. In this case, the injection head 18 is divided into two parts, one for independent bubbles 18a and one for continuous bubbles 18b Tank 1 for supplying P1 liquid and R1 liquid to injection head 18a of
Lines 4a, 15a and pumps 16a, 17a are formed separately in the injection head 18b for continuous bubbles, and tanks 14b, 15b for supplying P2 liquid and R2 liquid and pumps 16b, 17b are separately formed.
The structure of the injection heads 18a, 18b is such that the injection heads 18a, 18b accommodate spools 66a, 66b which form a path for ejecting to the outside and a path for circulation to the tanks 14, 15, and these spools 66a, 66b are connected to a hydraulic cylinder 67a, It is switched by the operation of 67b. The injection amount is determined by the injection amount from the injection head 18 and the injection time. For this reason, the pumps 16a, 16b, 17a, and 17b are used as variable displacement pumps, and the discharge amount is adjusted by the discharge amount adjusting dial 68a,
68b, 69a, 69b (70a, 70b, 71a, 71b are motors for moving these), and hydraulic cylinders 67a, 67b are expanded and contracted by solenoid valves 72a, 72b. Each of these operations is automatically performed by an electric signal output from the central controller 58. That is, the injection conditions of the foaming liquid based on the shape and use of the panel product 6a are set in advance in the panel product
Each 6a is stored as a barcode 73 (this barcode
73 is attached to the surface plate 9 or the like which is carried into the temperature-controlled room 7), and the information stored in the barcode 73 is read by the barcode reader 74.
Is read and input as an electric signal to the central control unit 58, and based on this input signal, the discharge amount adjusting dials 68a, 68
The adjustment of b, 69a, 69b and the setting of the opening time of the solenoid valves 72a, 72b are performed. In addition to this, the ten-key type manual input device 75 capable of manually inputting the above-mentioned injection conditions, the instruction start input device 76 capable of inputting the instruction start date and time of the device, and the like are connected to the central controller 58. Furthermore, the flowmeters 77a, 77a provided on the discharge side of the pumps 16a, 16b, 17a, 17b
The values read by b, 78a and 78b are also input. On the other hand, the signal issued from the central control unit 58 is the pump drive motors 79a, 79b, 80a, 8 in addition to the above-mentioned discharge rate adjusting dials 68a, 68b, 69a, 69b and solenoid valves 72a, 72b.
0b, pumps 16a, 16b, 17 via heat exchangers 81a, 81b 82a, 82b
Open / close valves 83a, 83b, 84a, 84b for opening / closing a high / low switching circuit connected in parallel with a, 17b, a display device 85 for displaying selection of the injection heads 18a, 18b, a printer 86 for printing injection information, and other drawings Are omitted, and each drive motor of the conveyer 8, the carry-out conveyer 20 and the like described later, the air cylinder 60 of the hook 11 and the hydraulic cylinder 61 of the lift 10, the conveyer 19 of the conveyer 3 described later, and the like are sent to all kinds of drive devices. Central controller 58
Centrally control with. FIG. 11 is a perspective view of a scraper 87 for scraping off foam residue attached to the panel product 6a.
Figure 12 is a cross-sectional view of the main part, but since foam residue due to the leakage of foam liquid adheres to the vicinity of the injection hole 88 of the panel product 6a, the surface of the panel product 6a while the surface plate 9 is being stacked. A scraper 87 is provided which abuts against and scrapes off the scraper. Since the surface of the panel product 6a and the surface plate 9 on which the panel product 6 is mounted are slightly in and out, the surface of the panel product 6a and the surface plate 9 on which the panel product 6a is mounted are slightly in and out, The scraper 87 is attached diagonally so that the scraper 87 does not get caught while the panel products 6a are being stacked even if there is such an entrance / exit. At the same time, the scraper 87 is elastically supported by the spring 89 so that the scraper 87 always contacts the surface of the panel product 6a. Keep urging. Further, a gutter 90 for receiving the scraped foam residue is attached below the scraper 87, and the foam residue is guided to the collection box 91 by this gutter 90. By the way, the panel products 6a placed on the surface plate 9 are continuously transferred by the carry-in conveyor 8, but are hooked at the foaming position.
When stacked in multiple stages with 11 or lift 10, these operations are completed in a short time, and most of them are stopped intermittent feed. Therefore, since the injection work may be performed during this stop time, the ease of various injection works including the insertion of the injection head 18 into the injection hole 88 can be ensured.

The transfer device 3 is a device that transfers the foamed panel products 6b that have been raised to the top of the stack after the foaming process is completed to another position, and is based on the transfer device 19 that has a lifting function and a transfer function. That is, the uppermost foam panel product 6b is lifted together with the platen 9 by the carrier machine 19 and conveyed to the side position, and at this position, the foamed panel product 6b is unloaded onto the carry-out conveyor 20 coming out of the temperature-controlled room 7. FIG. 13 is a front view showing a concrete example of the carrier 19. The carriage 93 to the surface plate 9 traveling on rails 92 provided above the carry-in conveyor 8 and the carry-out conveyor 20, respectively.
A rectangular frame 94 having a width substantially equal to that of the frame 94 is suspended by a hydraulic cylinder 95 so that the frame 94 can be moved up and down, and two large and small hooks 96 and 97 provided at the four corners of the frame 94 hook the ends of the surface plate 9 for traveling. is there.

That is, since the space between the surface plates 9 cannot be made too wide due to the thickness of the foam panel product 6b, the thickness is thin at first, and
The small hook 96, which has a small hooking depth, is used to hang it up, and when it is sufficiently hung up, the large hook 97, which is thick and has a deep hooking depth, is used to grasp it again. In addition, large and small hooks 96, 9
7, the engagement / disengagement operation with respect to the surface plate 9 is performed by the operation of the hydraulic cylinders 98, 99, and the operation of the hydraulic cylinders 98, 99 is automatically performed based on the command issued from the central controller 58 described above. Further, when the surface plate 9 is lifted by the large and small hooks 96 and 97, the padding material 100 is interposed between the surface plate 9 and the frame 94, and the surface plate 9 is structured so as not to move in the vertical direction for safety. Secure.

The carry-out device 4 is a device for removing the foam panel product 6b sent from the temperature-controlled room 7 by the carry-out conveyor 20 from the surface plate 9, and has a space for performing this operation.
It is equipped with an appropriate projecting device and a discharging chute (the projecting may be done manually). In addition, the discharged foam panel product 6b is sent to the next process such as the main assembly.

The cleaning back device 5 cleans the front and back surfaces of the empty surface plate 9,
This is a device for feeding the panel product 6a to the position where it is placed.
That is, since the leaking foaming liquid adheres to the surface plate 9 and must be removed by cleaning it, for this reason, a cleaning roller 21 forcibly rotated is provided on the carry-out conveyor 20. Let's go through this space and platen 9
To clean. The cleaned surface plate 9 is placed on the forwarding conveyor 22 where the start end and the end end intersect with the carry-out conveyor 20 and the carry-in conveyor 8 and sent to the original loading position. Since the transfer conveyor 22 intersects with the carry-out and carry-in conveyors 20 and 8, an elevator 23 is provided at a place where the surface plate 9 is taken over, and the elevator 23 moves up and down to take over. Besides this,
Guide rollers 24, etc. for guiding the surface plate 9 are provided on the paths of the conveyors 8, 20, 22. Then, the panel product 6a is placed on the surface plate 9 returned to the initial loading position again,
It is carried into the temperature-controlled room 7 by the carry-in conveyor 8.

If each of the above devices is operated by the central controller 58 according to the program following the flow of the surface plate 9, the foaming liquid is injected into the panel product 6a to carry it into the foaming panel product 6b, foaming, and conveying. The operations of unloading and cleaning back are continuously and automatically performed. The processing time is determined by the transport tact time of the surface plate 9, and the stacking number of the surface plate 9 in the temperature-controlled room 7 is also determined by this.

That is, for the foaming process, keep the ambient temperature of 40-60 ° C,
A curing time of 5 minutes and a curing pressure of 0.2 kg / cm ² are required. These are 1,300 mm × 2,500 mm × 25 mm iron surface plate 9
(Weight becomes 640 kg, and the surface pressure received by placing this one step becomes 0.02 kg / cm ² )
If it is set to 30 seconds (thus, one sheet will be finished every 0.5 minutes), 0.2 ÷ 0.02 = 10 to obtain the required curing pressure of 0.2 kg / cm ² , and at least 10 steps above this. If they are piled up, only the weight of the surface plate 9 is required and no special pressure device is needed. On the other hand, in order to obtain the required cure time of 5 minutes, 5 ÷ 0.5 = 10.
It is enough to stack 0 layers. If the preheating time is 1.5 minutes, 1.5 ÷ 0.5 = 3, which means that 3 more stages are required. Therefore, it is sufficient to stack at least 10 + 10 + 3 = 23 layers.

It should be noted that, in order to raise the surface plate 9 to a predetermined temperature (40 to 60 ° C.) in a short time at the start of the operation of the above apparatus, if a heating device (not shown) is attached above and below the carry-in conveyor 8, the work will start. It is possible to shorten the warming-up time up to and work more efficiently. Further, in the above description, the temperature-controlled room 7 is limited to the foaming device 2, but it is also conceivable to use the entire device as the temperature-controlled room 7.

In addition, although the above description relates to the foaming process, the same thing can be applied to the other processes such as bonding.

By the way, if the foamed resin filled panel is manufactured by the above apparatus, the following beneficial effects can be expected. That is, it was possible to combine the goodness of the conventional batch type, which is not limited to the shape of the product, and the good efficiency of the continuous type. Specifically, i) each processing including foaming processing is performed on each conveyor 8, 21, 22
Since it is a continuous type by the operation of, there is no play time and it is efficient. That is, as described above, if the tact time is set to 30 seconds, the efficiency is at least four times that of the batch type.

ii) Since the foaming process is performed by stacking the platens 9 and the conveyors 8, 21, 22 circulate endlessly, the space occupied by the entire apparatus is small,
Does not require a long-distance heat insulation and pressurizing device unlike the continuous type.

iii) With the batch method, it became possible to clean the empty surface plate 9 which required a lot of time in the past by such a flow work type automatic, and as a result, it is possible to greatly reduce the time. Became.

iv) If a sufficient number of stacking stages of the surface plate 9 is secured, the tact time can be changed, and as a result, the processing capacity can be adjusted appropriately.

v) Each processing operation is performed on the surface plate 9, and even if the shape of the panel product 6a placed on this is not affected, the shape of the flowing product differs. It is also possible to sandwich products, enabling mixed production of different products.

vi) Stacking of the surface plate 9 at the foaming position is intermittent feed,
Since the foaming liquid is injected during this stop, this work is not hindered.

〔The invention's effect〕

As described above, the present invention is as described above, that is,
Since the necessary pressing force and time can be secured simply by stacking the platen 9 on which the product 6a is placed in a certain level,
Since no special press equipment such as the conventional batch type is required and no setup change is required, a highly efficient device can be manufactured at low cost. Moreover, since the product shape is free, there is no restriction on the product shape unlike the continuous type. Further, since the platens 9 are piled up, the installation space is extremely small. In addition, if the surface plates 9 are stacked in the temperature-controlled room 7 or the like, a certain pressure is applied and a certain temperature is applied in addition to the time, so that the applicability thereof is further expanded.

[Brief description of drawings]

FIG. 1 is a perspective view showing a manufacturing process of a foamed resin-filled panel showing an embodiment of the present invention, and FIGS. 2 to 4 are front views, plan views, side views, and FIG. Fig. 5 is an explanatory view of an injection machine, Fig. 6 is an explanatory view of a temperature-controlled room, Fig. 7 is a partial sectional view showing the relationship between hooks and lifts, Fig. 8 is a side view showing the state of spacers, and Fig. 9 Is a front view, FIG. 10 is an explanatory view showing the outline of the injection machine, FIG. 11 is a perspective view of the scraper,
FIG. 12 is a sectional view of the main part, and FIG. 13 is a side view of the carrier. (Code) 6a …… Product 7 …… Constant temperature room 9 …… Product mounting platen

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kuniyoshi Kanda Kuniyoshi Kanda 2-7-1 Ima 2-chome, Okayama City, Okayama Prefecture OEM Equipment Co., Ltd. Okayama Main Office (72) Inventor Toko Tsuchiya 2178, Kitamura, Higashi-Ibaraki-gun, Ibaraki Ohe Mu Equipment Co., Ltd. Ibaraki Plant (72) Inventor Teruo Akasu 2178, Kitamura Kitamura, Higashi Ibaraki District, Ibaraki Prefecture O Equipment Co., Ltd. Ibaraki Factory

Claims (2)

[Claims] 1. A continuous take-out pressurizing device for continuously taking out a product (6a) after applying a constant pressure to the product (6a) for a predetermined time, wherein the product (6a) is placed on a surface plate. The product placing surface plates (9) placed on the product placing surface plates (9) are sequentially inserted under a step in which a certain number of the product placing surface plates (9) are stacked, and the product placing surface plates (9) are stacked by their own weight. A continuous take-out type self-weight pressurizing device which pressurizes and successively carries out the uppermost product placing surface plate (9). 2. A continuous take-out type self-weight pressurizing device according to claim 1, wherein the product placing platens (9) are stacked in a constant temperature chamber (7) and a constant temperature is applied to the product (6a). .