JPS59106914A - Mold-release turn-over device for concrete formwork - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The present invention relates to a demolding and reversing device for concrete forms used in the molded concrete industry. In the conventional molded concrete industry, drawing number/Figure 1
As shown in this figure, a mold 1 having a protrusion 2 on the inside is often used to manufacture a product 4 having a recess 3 as shown in the figure. In this case, the protrusion 2 is connected to the recess 3 in the frame body a of the formwork 1.
It must be removed from the mold by moving it laterally until it comes off. However, since the product 4 and the frame a are in close contact with each other and cannot be easily separated, the frame a is struck with a hammer, the impact causes the frame a to separate from the product 4, and a lever is inserted into the gap between the two. , the protrusion 2 is removed from the recess 3. Therefore, not only can the formwork be deformed and distorted due to hammering or straining, making it inaccurate, but the product may also be defective due to missing parts or dents. The molded formwork is lifted out of the production line using a crane or hoist, turned over, and the inner surface is cleaned. However, the present invention has been made to solve the above-mentioned drawbacks. , by providing a part and means for detaching and reversing the frame body on the outside of the formwork surface plate 1. From this, removing the mold, reversing it, and cleaning the mold can be done in about 2 minutes even by a large worker. It is an object of the present invention to provide a concrete formwork demolding/reversing device that is capable of removing and inverting concrete formwork, does not damage the formwork or products, and does not require transportation equipment. 1' will be explained based on this. In Figure 2 of the drawing, 6 is a concrete formwork, which is formed by combining long and short frames a, a, and b on a surface plate 7.
As shown in FIGS. 1 and 1 of the drawings, projections 10 are provided on the inner surfaces of the long frames a, a in the formwork 61 to form four parts 9 on the product 8. 1 in drawings 3 to 7
1 is a detachment and reversal part of the frame provided on the surface plate 7 or its extension on the outside of the long frame a, a in the formwork 6e, and after removing the frame a + 8 from the product 8, the inner surface is cleaned. It is used to invert it so that it can be placed. 12 is the frame a mentioned above.
, by means of guides provided at the detachment and reversal portion 11 on the outside of
．． 1, the frame a is moved easily using rollers. Reference numeral 13 denotes an intersection point for inverting the frame a, and the reinforcing member 14 attached to the frame a is attached horizontally below the middle of the height. Reference numeral 15 denotes a receiving member for the fulcrum 13 attached to the detachment/reversal part 11 at the terminal end side 1 of the guide 12, and when the frame a moves to the terminal end of the guide 12, the fulcrum 13 is fixed by the edge of the notch 16. When supporting λ, the upper part of the crushed piece body is pulled by a tensioning means to be described later, and the frame body a is turned over so that the inner surface and the lower surface thereof face upward. 1
Reference numeral 7 denotes the tensioning means of the frame a, which engages the notch 20 at the lower end with the shaft 19 supported by a plurality of holders 18 provided at predetermined intervals at the outer end of the detachment and reversal portion 11 of the frame a. Using a plurality of levers, a pin 21 is planted at the bottom of each lever,
When the upper part of the reinforcing member 14 with this pin 21 attached to the frame a is hooked at one end to a large number of notching feed pawls 23 formed at the lower part of the connecting rod 22, and the shaft 17 is rotated,
The frame a is pulled out of the product 8 and reversed, and the degree of inversion is regulated by a stopper 241. Attach the pull rod 2 to the push rod 22' in line with the pull rod 22.
If a notching feed pawl 23' is provided in the opposite direction to the notching feed pawl 23' of No. 2, and the pin 21 is hooked onto this notching feed pawl 2a and pushed,
It is possible to push back the frame body a. The above-mentioned tensioning means 17 uses a clevis-shaped cylinder as shown in FIG. 7 of the drawings, and if the rod 25 is connected to the upper part of the reinforcing member 14 attached to the frame a, the tensioning means 17 is automatically pulled up by the operation of a switch. The detachment 9 reversal of the frame body a and its restoration can be performed. Figures g and 7 of the drawings show another embodiment, in which a protrusion 10 of a frame a in a formwork 6 is provided on the upper edge of the frame a for chamfering 26 to a product 8; The intersection point 13 for inverting the frame body a is provided on a protrusion 28 protruding from a reinforcing member 14 attached to the frame body a, and this fulcrum 13 is engaged with a horizontally elongated hole 16 provided in a receiving member 151. This is different from the examples shown in FIGS. 3 to 7. Inside the formwork 6 in the device 1 configured as above

[Here, for example, when manufacturing a concrete frame for construction and demolding it, the outer end of the notching feed pawl 23 of the draw rod 22 connected to the reinforcing member 14 attached to the frame a is When the pin 211 of the tensioning means 17 is hooked and the tensioning means 17 is tilted to the right as shown by the arrow in FIG.
It is pulled away from the product 8 and advances toward the guide 12 on the receiving surface C. Accordingly, the tensioning means 17 is raised and the pin 21 is
The pin 21 is hooked onto the next notching feed pawl 23, and the tensioning means 17 is tilted one turn to the right, and each time the frame a is advanced by a certain distance, the pulling means 17 is raised one step. By repeating the operation of pulling down the tension means 17, the frame body a
is pulled out onto the guide 12 and the protrusion 1 provided on its inner surface
0 from the recess 9 of the product 8 as shown in FIG. In this case, the reinforcing member for the frame at
Since the attached fulcrum 13 is secured to the notch 16 of the receiving member 15, if the frame a is further pulled from the tensioning means 17F, the frame a is pulled above the fulcrum 13, as shown in Fig. S of the drawing. As shown in Fig. 1, the product 8 is reversed at the detachment and reversal portion 11, and is stopped by the stopper 24) with its inner surface facing upward. Even 7 people can perform mold removal, inversion, and mold cleaning, and it takes only 2 minutes. After taking out the product 8 and cleaning the frame a, the tensioning means 17 and the tensioning rod 221 prevent the rapid rotation of the frame a.
After rotating the unit forward so that it rides on the guide 12, the pulling means 1
7, the pin 2] is engaged with the notching feed pawl 23° of the push rod 22° as shown in Figure 1, and the tensioning means 17 is rotated to the left as shown in Figure 1. Frame a is pushed by a push rod 22°t, moves on guide 12 to receiving surface C, is returned to its normal position, and is combined with other frames b and L) to form formwork 6. be. The operation of reversing the demolding 9 described above requires a plurality of workers because the tensioning means 17 of the lever set is operated independently, but the tensioning means 17 can be operated by using an interlocking shaft, an interlocking cable, or other interlocking means as is well known. If the tensioning means 17 is converted into a cylinder or rotary actuator as shown in FIG. 7, the above-mentioned operation can be performed with just a switch operation is to be carried out. As mentioned above, the concrete formwork demolding and reversing device related to the present invention E has two parts on the outside of each frame body constituting the formwork on the surface plate.
A detachment and reversal part for the frame bodies is provided, and a guide is provided in this part to horizontally move each frame body until a protrusion provided on the inside thereof is removed from the product, and a guide is provided on the outside of the frame body at the terminal end side of this guide. A receiving member for receiving a fulcrum, and a tensioning means for pulling the upper part of the frame outwardly than the fulcrum, are used to manufacture a product within a mold and remove the tensioning member from the mold. The frame is pulled horizontally on the guide, and when the protrusion of the frame is removed from the product, the fulcrum is engaged with the receiving member and the frame is reversed by the tensile force. Conventionally, demolding required 3 to 1 person to spend several minutes. Even seven workers can complete the work of turning over and cleaning the mold in about λ minutes, which not only saves labor and improves efficiency, but also eliminates the need to hit or pry the frame when removing the mold. This prevents the formwork from becoming inaccurate due to deformation or distortion, and the product from becoming defective due to chips or dents.In addition, the formwork can be reversed at the detachment/reversal section provided on the outside of the surface plate. In this case, there is no need for cranes, hoists, etc. to be installed, and great effects can be achieved in terms of reduced installation costs and improved workability.

[Brief explanation of drawings]

Figure 7 is a partially cutaway vertical side view of a conventional concrete formwork. FIG. 2 is a cross-sectional view of a formwork that employs the equipment related to the present invention. 3 to 5 are vertical sectional side views showing the structure and operation of an embodiment of the device related to the present invention 1. 3 and 7 are longitudinal sectional side views showing the structure of other embodiments. FIGS. 5 and 5 are longitudinal sectional side views showing the structure and operation of other embodiments. In the figure, 6 is the formwork, 7 is the surface plate, a is the frame body, 8 is the product, 10 is the protrusion, 11 is the detachment/reversal part, 12 is the guide, 131 is the fulcrum, ] 5 is the receiving member, and 17 is the tensioning means. be. 72- 18th 15 12 4 outside? ψ 74- N bacteria

Claims (1)

[Claims] On the surface plate, there is provided a detachment/reversal area for each frame on the outside of each frame that makes up the formwork, and each frame is horizontally moved at this area until the protrusion provided on the inside of the frame is removed from the product. A receiving member for receiving a fulcrum provided on the outer side of the frame body at the terminal end side t of the guide, and a tensioning means for pulling the upper part of the frame body outward from the fulcrum point. A device for removing and reversing concrete formwork.