KR20000004169U - Material feeding adjust control assembly for polyurethane mixing head - Google Patents

Abstract

The present invention relates to a raw material feed amount control block assembly of a polyurethane mixing head for foaming, and is an improvement of the raw material feed amount adjusting head having inaccuracy of control of raw material feed amount and inconvenience of operation. The discharge hole 12 and the inclined hole 11 is formed therein, the hinge 10 is assembled to the center block, and the raw material injection hole 21 is formed above, and the raw material injection hole 21 is penetrated again through the hole 27, the hole 27 is The pin 50 of the through hole 22 is to be assembled with the passage 22 perpendicular to the hole 22 and extends to the rear and the passage 23 through the passage 23 so that the hole 25 penetrates downwards again, which is the following control rod 26 is assembled A body 20 which is assembled with the hinge 10 so as to penetrate through the screw hole 24 again, and an adjusting rod 26 that is assembled to the screw hole 24 of the body while allowing the rounded end to seal or open the passage 23; The hole 34 is formed on the outside, and the spring 32 is inserted therein, and the space 31 allows the piston 40 to be assembled. The cylinder 30 is assembled to the body, and the protrusion ring 53 stays in the hole 27 of the hinge 10 while the screw 52 is assembled to the piston 40 while being assembled to the hole 22 of the body. And a pin 50 for sealing or opening the outlet hole 12 of the hinge 10.

Description

MATERIAL FEEDING ADJUST CONTROL ASSEMBLY FOR POLYURETHANE MIXING HEAD}

The present invention relates to a feedstock control block assembly of a polyurethane mixing head for foaming. Foamed polyurethane is an important material that is used as a variety of materials in various fields throughout the industry, it can be divided into a single color and a mixture of colors. The polyurethane is a mixture of materials such as polyol and isocyanate, but the conventional apparatus 2000 capable of producing only a single color is as shown in FIG. 4 with two raw material supply control block assemblies attached thereto. Looking at this, the cylinder 101 having a piston 102 is installed in the frame 100, the center block 110 and the side block 120 is assembled to both sides of the lower side of the frame 100, the tubular 140 is assembled to the side block, respectively. A bracket 103 is assembled below the piston and a chuck 105 is assembled to the bracket 103. Each of the chuck 105 has a control pin 124 is bite, the jaw 125 of the adjustment pin 124 is inserted into the groove of the ball valve 130 is assembled in the side block to rotate the ball valve. The ball valve 130 is provided with passages 131, 132, and 133 intersecting with each other. That is, the assembly including the ball valve and the tube control pin corresponds to the raw material supply control block assembly.

In this state, the raw material is injected through the raw material injection hole 121 of the side block, but the cylinder 101 is operated so that the piece cylinder 102 moves up and down. In the end, the chuck 105 rotates the adjusting pin in the left and right direction (figure 5). . Of course, the tubular 140 is connected to the hose and it is obvious that the hose is connected to the raw material tank. If the piston is operated in the state where the raw material is injected as described above and the position of the ball valve is changed from side to side, the position of the ball valve passageway and the hole of the ball seat is displaced. All of the raw materials do not pass into the center block, and some of them escape to the tube 140 and are returned to the raw material tank. Therefore, the amount of raw material injected into the center block is controlled.

By the way, the conventional device is difficult to maintain the precision in manufacturing the ball valve and the processing is difficult to increase the production cost, as well as a high incidence of defects, the production of the ball seat is also difficult to process to maintain the tolerance with the ball valve Along with the hard problem, there is a disadvantage that requires very skilled skills when assembling. If the ball valve and the ball seat are not assembled correctly, the amount of injection of raw materials is not precisely controlled, which leads to the closure of defects due to the failure to obtain the desired product. The problem could not be overlooked. In addition, the orifice must be assembled at the rear of the ball valve, but the orifice is a component that can not be omitted in the conventional apparatus because the mixing amount of the raw material is controlled by the hole size of the orifice. By the way, the orifice has an inconvenience of having to replace the different sizes according to the mixing ratio of the raw materials, and an uneconomical and unreasonable problem of disassembling and reassembling the side block when replacing the orifice. It became.

Accordingly, the object of the present invention is to provide a raw material supply control block assembly of a polyurethane mixing head for foam, which is simple in structure, excellent in precision, and precisely and simply controls the injection amount of raw materials.

In order to achieve the above object, the present invention, the discharge hole 12 and the inclined hole 11 is formed therein, the hinge 10 is assembled to the center block, and the raw material injection hole 21 is formed above the raw material injection hole 21 is again The hole 27 penetrates the hole 22 through which the pin 50 below is assembled, and the passage 23 penetrated at right angles to the hole 22 extends rearward and penetrates the passage 23 and the hole 25 downwards again. It is to be penetrated, but the following adjustment rod 26 is assembled through the screw hole 24 to be assembled again to the body 20 to be assembled with the hinge 10, and the rounded end is assembled to the screw hole 24 of the body through the passage 23 A control rod 26 for sealing or opening, a hole 34 formed outside, a spring 32 inserted therein, and a piston 40 assembled in the space 31; And the cylinder 30 which is assembled to the body with a hole 36 formed in the lower projection jaw 35 and the hole 22 of the body, the protrusion ring 53 stays in the hole 27 of the hinge 10 and the screw 52 is assembled to the piston 40. It is characterized in that the cylindrical end 51 is composed of a pin 50 to seal or open the discharge hole 12 of the hinge 10 by the movement of the piston 40.

1 is a reference perspective view showing a use example of the present invention (3-way mixing head).

2 is a cross-sectional view showing an example of use of the present invention.

3 is a cross-sectional view showing an example of use of the present invention.

4 is a front view showing a conventional device.

5 is a cross-sectional view showing the main portion of FIG.

6 is a cross-sectional view showing some of the important parts of the present invention.

<Description of the code | symbol about the principal part of drawing>

10: hinge 11: inclined hole

12: discharge hole 20: body

21: Raw material injection hole 21a, 23a: Screw hole

22: Hole 23: Pathway

24: screw hole 25: hole

26: Adjustment bar 27: Hole

28: protrusion slant 30: cylinder

31: space part 32: spring

33: protrusion 34: hole

35: protrusion 36: hole

40: Piston 50: Pin

51: cylindrical end 52: screw

53: extrude ring 60: center block

61: space part 100: frame

101: cylinder 102: piston

103: Bracket 104: Hole

105: Chuck 110: Center Block

120: side block 121: raw material injection hole

122,123: ball seat 124: adjusting pin

125: Jaw 130: Ball valve

131,132,133: Passage 140: Pipe

141: screw hole 150: cleaning solvent injection device

152: Body 153: cap

154: Spring 155: Pin

157: nuts

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used for the same components, even if displayed on different drawings. In the following description, it should be noted that only parts necessary for understanding the operation according to the present invention are described, and descriptions of other parts will be omitted so as not to obscure the subject matter of the present invention.

FIG. 1 shows a mixing head 1000 that can mix raw materials of multiple colors with three control block assemblies of the present invention assembled in a center block. Since the conventional apparatus is not three-head type, composite raw materials are mixed. You can't. In FIG. 1, the rear cleaning solvent input device 150 is a device for injecting the cleaning solvent for cleaning the raw materials remaining in the apparatus after the operation, which is formed in the same configuration as the conventional apparatus. In the state shown in FIG. 2, a hose connected to the raw material tank is assembled in the screw hole 21a in the raw material injection hole 21, and an air hose is connected to the hole 36 and the hole 34 below the cylinder 30. 3, the hose connected to the raw material tank is assembled in the screw hole 23a connected to the passage 23. As shown in FIG. The above hose connection configuration is omitted in the drawings. On the other hand, in the hole 22 of the body, the pin 50 above is assembled, and the piston 40 assembled with the pin 50 is pulled to the leftmost side (2nd and 3rd degrees) in the cylinder 30. At this time, the protruding ring 53 of the pin 50 is pulled to the left end of the raw material injection hole 21 and the end of the adjusting rod 26 completely opens the passage 23. This condition is the same for all three control block assemblies. In this state, each raw material is injected through each raw material injection hole 21, and the injected raw material passes through the raw material injection hole 21, passes through the hole 27 of the body, and into the space 61 of the center block 60 through the hole 12 of the hinge. The mixed raw materials are mixed by the impeller 183 while being sufficiently mixed and discharged through the discharge pipe 182, which is injected into the processing mold and processed. However, the raw material injected at a high pressure through the raw material injection hole 21 is injected into the center block through the hole 27 of the body and the hole 12 of the hinge, but due to the opposite pressure generated, some raw materials pass through the protruding ring 53 of the pin 50. (To the left of the drawing reference) is also injected into the passageway 23, which is then reduced back into the raw material tank through passageway 23. Therefore, when adjusting the amount of injection of raw materials, turn the adjusting rod 26 so that the end of the adjusting rod blocks the passage 23. If the passage 23 is almost closed, the amount of raw materials reduced is extremely small, and thus the injection amount of the raw material toward the center block becomes larger. The more the 23 is opened, the smaller the amount of raw material injected. Therefore, by adjusting the control rod assembly of each control block assembly to adjust the reduction amount (returned amount) of the raw material is to adjust the mixing ratio of each raw material.

In addition, when mixing only the raw materials of a single color rather than a complex color, one of the three control block assemblies must be sealed. In this case, an air pressure is applied to one of the control block assemblies. Let end 51 seal the hole 12 of the hinge.

In addition, when the work is finished and the raw material remaining in the mixing head is cleaned, air pressure is applied to the entire piston as described above, so that the cylindrical end 51 of the pin 50 seals the hole 12 of the entire hinge. Injecting the cleaning solvent at a high pressure into the cleaning solvent injection device 150 and rotating the impeller at high speed cleans the inside and outside of the center block and the impeller. Then, in the following work, applying air pressure through a hose connected to the hole 36 of the body repositions the piston and thus the cylindrical end 51 of the pin opens the hole 12 of the hinge. In this state, the compounding action of the raw materials can be performed again as described above.

The above-described design makes sure the injection and blocking of the raw material is surely performed by the sealing action of the pin and the hinge, and in particular, the mixing amount of the raw material can be adjusted simply and very precisely by arbitrarily rotating the adjusting rod, which almost eliminates the occurrence of defects. There is a useful effect that can be zeroed. In addition, it is inconvenient to solve the problem of complicated parts or complicated structure, inconvenience in assembly and use, inaccuracy of operation, and to disassemble and assemble the side block to replace the orifice according to the compounding quantity. Adopting a simple yet precise structure that is easy to solve the non-productive and non-productive aspects, there are many advantages, such as excellent usability and almost no failure.

Claims (1)

A hinge 10 having a discharge hole 12 and an inclined hole 11 formed therein and assembled to a center block; Above, a raw material injection hole 21 is formed, and the raw material injection hole 21 is penetrated through the hole 27 again, and the hole 27 penetrates through the hole 22 where the pin 50 below is assembled, and the passage 23 penetrated perpendicularly to the hole 22 is formed. A body 20 extending rearward and penetrating the passageway 23 again to penetrate the hole 25 downwardly, which allows the control rod 26 to be penetrated again with the screw hole 24 to be assembled; Adjusting rod 26 is assembled to the screw hole 24 of the body and the rounded end portion to seal or open the passage 23, A cylinder 34 which is assembled to the body with a hole 34 formed outside, a spring 32 inserted therein, a piston 40 assembled into the space portion 31, and a hole 36 formed in the lower projection jaw 35; The protruding ring 53 stays in the hole 27 of the connector 10 while being assembled to the hole 22 of the body, and the screw 52 is assembled to the piston 40 by the movement of the piston 40. A block for adjusting the amount of raw material supplied to a foaming polyurethane mixing head, characterized by a pin 50 for opening.