RU2406603C1 - Tool to condition reinforced polymer tube ends - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to devices designed to condition reinforced polymer tubes. Device casing accommodates revolving sleeve 2 with cavity 3 open on the side of face 4 of casing 1. Sleeve radial hole 7 accommodates cylindrical miller 8 to revolve therein with axles extending inside sleeve cavity 3. Casing 1 accommodates inner toothed rim 13 with its teeth oriented along axis of sleeve 2. Said cylindrical miller 8 has section 15 whereon gear wheel is fitted aligned with said miller to engage with rim 13 to transmit rotation. Teeth 9 of sleeve 2 has their cutting edges arranged at the angle to circumscribe a conical surface in the form of chamfer.

EFFECT: easier conditioning, longer life of tool.

7 cl, 2 dwg

Description

The invention relates to construction, and specifically to a tool for stripping the ends of reinforced polymer pipes used for the construction of pipelines.

A known tool for stripping the ends of reinforced polymer pipes, having a housing with an axial hole, which at the inlet section at the end of the housing has the shape of a cylinder with a diameter corresponding to the diameter of the reinforced polymer pipe. The housing is made with a slot in the form of a radially located segment in the wall of the housing. On the side surface of the slot in the housing, which is parallel to the plane passing through the axis of the hole in the housing, a cutter is rigidly fixed, which is made with a cutting edge having a straight section, as well as an angle-oriented section located on the supply side of the stripped end of the reinforced polymer pipe. Cleaning the end of the reinforced polymer pipe is carried out by rotating the tool body, when the cutter evenly cuts the outer layer from the end of the reinforced polymer pipe. The rotation of the tool body can be carried out manually or with a drill, in which the tool body can be fixed by means of a shank (RU 82441 U, IPC V26V 27/00, 04/27/2009).

The execution of the cleaning operation is accompanied by the application of a force by the person to rotate the tool body to clean the ends of the reinforced polymer pipes or to hold the drill, which rotates, and this force increases as the length of the pipe end to be cleaned gradually interacts with the cutting edge of the cutter along its entire length , and does not decrease until the completion of the stripping operation. In this case, the cutter removes the material from the cleaned end of the reinforced polymer pipe at once to the entire required depth in one pass, which also contributes to a significant cutting force. When the cutter becomes slightly dull, the effort to clean up is greatly increased. This circumstance often forces the sharpening of the cutter.

The technical result of the invention is to reduce the efforts applied for manual cleaning of the ends of reinforced polymer pipes, which makes the cleaning process less time-consuming, as well as to increase the duration of the use of the tool for cleaning without carrying out work to restore its effectiveness.

The technical result is provided by a tool for cleaning the ends of reinforced polymer pipes, which contains a housing, inside of which a sleeve with a cavity open from one of the ends of the housing is mounted rotatably, a drive handle located outside the housing from the side of its second end, which is connected with the sleeve for ensuring its rotation, a cylindrical mill mounted by an axis parallel to the axis of the sleeve with the possibility of rotation in a radially located hole of the sleeve and made with cutting teeth and protruding laterally into the cavity of the sleeve. Inside the housing is located coaxially with the sleeve, an internal gear ring fixed relative to the body, the teeth of which are oriented in the direction of the axis of the sleeve. The cylindrical cutter has a portion on which a gear gear is made coaxially with the cutter, coupled with the gear rim to transmit rotation. The teeth of the cylindrical cutter in the area from the side of the hole into the cavity of the sleeve are made with angled cutting edges that describe the conical surface in the form of a bevel.

In the best embodiment of the invention, the cutting teeth of the cylindrical cutter are made with left-handed helical. Preferably, the gears and gears are spur gears.

The ring gear may be made on a ring rigidly fixed inside the housing. In the best case, when performing a ring gear on a ring, a cylindrical cutter is made with a shank with a gear gear located at its end, while a ring with a ring gear is fixed inside the housing on a surface adjacent to the second end of the housing. For the greatest convenience of working with the tool, as well as to ensure the best quality of stripping, it is preferable when the side surface of the sleeve cavity is cylindrical with a lead-in chamfer on the open side of the sleeve cavity for feeding the end of the reinforced polymer pipe. In the best case, the case is made with a rigidly mounted radially located handle to hold the tool.

The invention is illustrated by an example implementation of a tool for stripping the ends of reinforced polymer pipes, shown in figure 1 in section. Figure 2 shows a cross section of a cylindrical cutter at the location of its cutting teeth.

A sleeve 2 with a cavity 3 is mounted inside the housing 1 and rotatably mounted, which is open from the side 4 of the housing 1. Outside the housing 1, a drive handle 6 is connected to the sleeve 2 to ensure its rotation. In the radially located hole 7 of the sleeve 2, a cylindrical milling cutter 8 is installed with an axis parallel to the axis of the sleeve 2, having helical left-cutting teeth 9 (FIG. 2), which protrude laterally into the cavity 3 of the sleeve 2. The teeth 9 are on the section from the side of the hole into the cavity 3 the sleeves 2 are made with angled cutting edges 10 describing the conical surface in the form of a chamfer.

Inside the housing 1, on the surface 11 adjacent to the end 5, a ring 12 is rigidly fixed, which has an internal gear rim 13 with straight teeth (Fig. 1 shows schematically parallel to the axis of the ring 12 lines) for transmitting rotation.

The cylindrical cutter 8 is made with a shank 14, on which there is a section 15 with a spur gear, conjugated with the ring gear 13 of the ring 12 to bring the cylindrical cutter 8 into rotation.

The lateral surface 15 of the cavity 3 of the sleeve 2 from the open side is cylindrical with a chamfer 16. On the casing 1, a radially located handle 17 is rigidly fixed outside, allowing you to hold the tool with your hand while stripping the end of the reinforced polymer pipe.

The end of the reinforced polymer pipe (not shown) is fed into the cavity 3 of the sleeve 2, and the drive handle 6 is rotated. In this case, the sleeve 2 rotates and moves a circular mill 8 around the machined end of the reinforced polymer pipe, which rotates around its axis due to the interaction section 15 with a spur gear with a gear rim 13 of the ring 12, which ensures cutting outside the end of the reinforced polymer pipe with teeth 9 of thin chips. The chips are removed from the cavity of the sleeve 2 into the housing 1 and then through the radial hole 18 in the housing 1 to the outside.

As the end of the reinforced polymer pipe is inserted into the cavity 3 of the sleeve 2, it is processed to a predetermined length determined by the depth of the cavity 3 of the sleeve 2. The amount of material removed from the side surface of the end of the processed polymer reinforced pipe is determined by the protrusion of the teeth 9 inside the cavity 3 of the sleeve 2. Upon completion of processing the tool is removed from the machined end of the reinforced polymer pipe.

Parts of the tool for stripping the ends of reinforced polymer pipes are made of metal alloys, selected depending on the function performed by these parts. The housing 1 (all housing parts) can be made of a polymer material having the necessary rigidity. The cylindrical mill 8 has a rather significant service life, however, when it is exhausted, it can be replaced by a new one. To remove the cylindrical cutter 8, the tool is disassembled, the specific structural embodiment of which is shown in detail in FIG. 1.

Claims (7)

1. A tool for cleaning the ends of reinforced polymer pipes, characterized in that it contains a housing, inside of which a sleeve with a cavity open from one of the ends of the housing is mounted rotatably, a drive handle located outside the housing from the side of its second end, which is connected with a sleeve to ensure its rotation, a cylindrical mill, the axis of which is mounted parallel to the axis of the sleeve with the possibility of rotation in a radially located hole of the sleeve, made with cutting teeth protruding from the side inside the cavity of the sleeve, while inside the housing coaxially with the sleeve there is an internal gear ring fixed relative to the body, the teeth of which are oriented in the direction of the axis of the sleeve, the cylindrical cutter has a section on which the gear wheel is engaged coaxially with the gear, coupled with the gear ring to transmit rotation, and the teeth are cylindrical milling cutters in the area from the side of the hole into the cavity of the sleeve are made with angled cutting edges forming a conical surface in the shape of a bevel. 2. The tool according to claim 1, characterized in that the teeth of the cylindrical milling cutter are made of left-handed helical. 3. The tool according to claim 1, characterized in that the ring gear and the gear are spur gears. 4. The tool according to claim 1, characterized in that the ring gear is made on a ring rigidly fixed inside the housing. 5. The tool according to claim 1, characterized in that the cylindrical cutter is made with a shank, and the section with the gear wheel is located at its end, while the ring gear is made on a ring that is rigidly fixed inside the housing on a surface adjacent to the second end of the housing. 6. The tool according to claim 1, characterized in that the side surface of the sleeve cavity is cylindrical with a lead-in chamfer on the open side of the sleeve cavity for feeding the end of the reinforced polymer pipe. 7. The tool according to claim 1, characterized in that the housing is made with a rigidly mounted radially located handle for holding the tool.

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