TH5485B - Methods and tools for producing surrounding streaked pipes - Google Patents

Abstract

This invention is about a method and tool for producing a ribbed pipe around it. This tool consists of a central core (8-9-10) joined together with a liquid supply pipe (4) from the nozzle (11), of which a plastic material is formed. is supplied into the forming area (12) determined between the spindle (9) and the movable die (1-2). compared to the spindle Surrounded pipes are produced by a known tool segment for a number of reasons: There is an uneven inner surface, imperfect streaks or air bubbles, and is not strong in the pipe wall or streak, this disadvantage can be eliminated by the size of the forming area. (12)of the tool and the groove (13) of the cooled mould, the volume of the specified area between the plane (20) the protrusion at the end face of the fluid supply pipe, the surface (16) of the spindle and the plane ( 17) consists of the surface covering of the axis (10) equal to the summation of the volume of the groove (13) at a position within the region of the axis of rotation at any moment

Claims (7)

1. A tool for producing perforated tubes with smooth inner faces made of plastic material. The instrument consists of a fluid supply pipe (4-104), a central rod (108) positioned on the center line of the fluid supply line. It consists of a shaft (8) positioned inside a pipe (4-104), a spindle (9) protruding from that tube, and consists of a larger, conical section in the direction of production and with a core (10) of constant diameter. Which extends from the spindle Where the core is a cylindrical port (11-109) with the liquid supply pipe, the channel is attached to the plastic dosing device. And the forming part (1-2-101-102) lies around the fluid supply pipe and the core and is positioned in an infinitely moving direction in the direction of production. The inner face of the mold has been cooled, arranged with a groove (13-111) for the forming of the pipe streak. It is characterized by that the resting volume of the ring area (14) is determined by the plane that extends to the center of the axis, is aligned with one end face of the fluid supply pipe (4-104), the face (16) of the spindle. The plane (17) consists of the axis covering (10), which is associated with the filling volume of those tubes (13-111) of the forming section. Which is positioned at the spindle (9) at a particular moment of movement 2. The instruments according to item 1 have the free characteristic, the volumes deviate from each other, being the largest 25 percent. 3. The tool according to item 1 has the characteristic that the spindle distance (9) is related to the product of the inter-groove distance (13) of the forming section reduced by the thickness of the groove (13). One groove 4. The tool according to item 1 is characterized by that the lateral surface of the cone (9,9 b) of the spindle has an optimal angle between 2 and 30 degrees, approximately 15 degrees relative to the center axis of that axis 5. The instrument according to clause 4 has the characteristic that the angle between the side surface of the conical part (9,9 b) of the spindle and the axis of the axis changes in action when the angle value 6. The tool according to clause 5 has the characteristic that the surface of the part (9,9 b) of the spindle is a shape. Pablo 7. The instrument according to item 1 has a characteristic that, apart from the aforementioned groove (13,111), it is a form of the volume of the container The inner surface of the mold has been cooled, provided with a pressure balancing groove (113), which is narrower than the groove, and the remainder completely or empty at the tool's standard material pressure by value. The viscosity of the material 8. The machine according to item 7 has the characteristic that the ratio of the groove depth equilibrium the pressure balance (113) to its width is at least twice as compared to the ratio of the groove (111). 9. The apparatus according to clause 8 has the characteristic that the ratio of the depth of the pressure equilibrium (113) to its width ranges from 3: 1 to 15: 1, the best approximately 10: 1 1 0. Clause 9 has the characteristic that the width of the pressure equilibrium groove (113) is 0.3 to 3 mm, optimal about 1 mm. Near the groove (111) and parallel to each other 1 2. The instrument according to Article 11 has the characteristic that the pressure balance groove (113) is arranged on both sides of the groove (111) 1 1.1,102). (13; 111,113) and there is around the said liquid supply pipe. And that axis has the characteristics that at least equal the sum of The parameters of the molded pipe walls and the volume (15) of those grooves of the forming section, cut by the ring between the time units. And, at most, is the sum of the groove volumes (13; 111,113) of the forming part. (1,2; 101,102), which is passed by the ring cavity and the pipe wall formed during the said time units 1 4.The method according to Clause 13 is characterized by that the material flow rate in the axial and radial direction of the tool is adjusted by changing the relationship between the core temperature and the mold being cooled 1. 5.The method of clause 13 is characterized by that the material being fed through two layers of ring (11) is stacked on the same axis (18,19), derived from separate material dispensing devices 1. 6.The method in Clause 13 is characterized by that the discharge velocity in the cavity (11) between the fluid supply pipe and the core is maintained to be equal to the speed of movement of the forming section (1,2) 1. 7.The method in accordance with Article 16 is characterized by that the material discharge speed deviates from the movement speed of the machining section by a maximum of 25 percent.