CN104002470A - Circle making device based on PVC (polyvinyl chloride) tube and circle making method - Google Patents

Abstract

The invention belongs to the field of structure design and making, in particular relates to a circle making device based on a PVC (polyvinyl chloride) tube and a circle making method. The device comprises a spiral spring, a heating device, a hose clamp and a wheel hub, the hose clamp is mounted on the wheel hub, one end of the PVC tube is connected with the hose clamp, the PVC tube is heated by the heating device to bend along the circumference of the wheel hub, the spiral spring supporting the PVC tube is arranged in the PVC tube and penetrates the PVC tube in the bending process of the PVC tube, two ends of the PVC tube which is bent into a circle are connected with a PVC tube straight joint to form a complete circle. The circle making method is as follows: one end of the PVC tube is fixed on the wheel hub with the hose clamp, the spiral spring penetrates into the PVC tube; the PVC tube is heated by the heating device to soften, and is bent along the circumference of the wheel hub by application of an external force, the spiral spring is taken out of the PVC tube; finally redundant PVC tube is cut, and the two ends of the PVC tube are connected with the PVC tube straight joint to form the complete circle. The circle making device has the advantages of being easy to make, simple in operation, easy to implement and the like.

Description

Circle manufacturing device based on PVC pipe and manufacturing method thereof

technical field

The invention belongs to the field of structure design and manufacture, in particular to a PVC pipe-based circle manufacturing device and a manufacturing method thereof.

Background technique

PVC (full name Polyvinyl chloride polymer), the main component is polyvinyl chloride, and other components are added to enhance its heat resistance, toughness, ductility, etc. The top layer of this surface film is lacquer, the main component in the middle is polyvinyl chloride, and the bottom layer is back-coated adhesive. It is a well-loved, popular and widely used synthetic material in the world today. It is the second most used synthetic material worldwide. According to statistics, in 1995 alone, the production of PVC in Europe was about 5 million tons, while its consumption was 5.3 million tons. In Germany, PVC production and consumption average 1.4 million tons. PVC pipe (PVC-U pipe), that is, rigid polyvinyl chloride pipe, is made of polyvinyl chloride resin, stabilizer, lubricant, etc., and is extruded by hot pressing. It is the earliest plastic pipe to be developed and applied. PVC-U pipe has strong corrosion resistance, easy bonding, low price, and hard texture. PVC plastic pipes are used to transport drinking water, waste water, chemicals, heating fluid and cooling fluid, food, ultra-pure liquid, mud, gas, compression The application of air and vacuum systems, etc., sometimes needs to be bent into a circle for use.

Contents of the invention

The object of the present invention is to provide a kind of circle production device and its production method based on PVC pipe.

The purpose of the present invention is achieved through the following technical solutions:

The production device of the present invention includes a coil spring, a heating device, a throat hoop and a hub, wherein the throat hoop is installed on the hub, and one end of the PVC pipe is connected to the throat hoop, and the PVC pipe is heated by the heating device, along the circumference of the hub. Bending, the PVC pipe is pierced with a threaded spring supporting the PVC pipe during the bending process, and the other end of the PVC pipe bent into a circle is connected to one end of the PVC pipe through the direct head of the PVC pipe to form a complete circle.

Wherein: the threaded spring is connected with a dragging rope for pulling it in the PVC pipe, one end of the dragging rope is connected with the threaded spring in the PVC pipe, and the other end is passed through the other end of the PVC pipe The hub includes an outer circumferential body, a supporting rib and a central turning circle, the outer circumferential body and the central turning circle are arranged concentrically, and are connected by a plurality of supporting ribs evenly distributed around the circumference; the outer circumferential body is formed by angle steel tension bending welding Ring-shaped; the outer circumferential body is provided with a gap for fixing the throat hoop;

The manufacturing method of manufacturing device of the present invention is:

First, fix one end of the PVC pipe on the hub with the throat hoop, and insert the coil spring into the PVC pipe; then use the heating device to heat the PVC pipe to soften it, and apply an external force to bend the PVC pipe for one week along the hub, The helical spring is taken out from the PVC pipe; finally, the redundant PVC pipe is cut off, and the two ends of the PVC pipe are connected with a PVC pipe straight head to form a complete circle.

Wherein: before the coil spring is inserted into the PVC pipe, a drag rope is connected to the coil spring, the coil spring is penetrated by one end of the PVC pipe, and the drag rope is passed through the other end of the PVC pipe; While the PVC pipe is being bent, the helical spring is synchronously dragged by the dragging rope while bending, until the one-round bending is completed, and then the towing rope and the helical spring are taken out from the PVC pipe.

Advantage of the present invention and positive effect are:

1. making device is easy to make, and cost is low; The wheel hub in the making device of the present invention, its main body is to make with angle steel, as making the mold based on circle with this, all the other devices also include hot air cylinder, spring spring, throat hoop and The whole device is simple in structure, easy to implement, and low in cost, so even if it is made in small quantities, the cost will not be too high.

2. The manufacturing method is easy to operate and easy to implement; the manufacturing method of the present invention heats and softens the PVC pipe along the outer circumference of the wheel hub to form a complete circle, and its operation is relatively simple and easy to implement.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the manufacturing device of the present invention;

Fig. 2 is the structural representation of hub in Fig. 1;

Fig. 3 is the completed circle based on PVC pipe;

Among them: 1 is the PVC pipe, 2 is the drag rope, 3 is the coil spring, 4 is the hot air cylinder, 5 is the throat hoop, 6 is the wheel hub, 601 is the outer circumferential body, 602 is the support rib, 603 is the center circle, 7 is PVC pipe straight head, 8 is the gap.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the production device of the present invention includes a drag rope 2, a coil spring 3, a heating device, a throat clamp 5 and a hub 6, wherein the throat clamp 5 is fixedly connected to the hub 6, and one end of the PVC pipe 1 is connected to the throat clamp 5 connection, the PVC pipe 1 is heated and softened by a heating device (the heating device in this embodiment is a hot air cylinder 4), and bent along the circumference of the hub 6, and the PVC pipe 1 is provided with a threaded spring supporting the PVC pipe 1 during the bending process. 3. The threaded spring 3 is connected with a dragging rope 2 for pulling it in the PVC pipe 1. One end of the dragging rope 2 is connected with the threaded spring 3 in the PVC pipe 1, and the other end is connected by the other end of the PVC pipe 1. One end passes through; the two ends of the PVC pipe 1 bent into a circle are directly connected to the head 7 through the PVC pipe to form a complete circle.

As shown in Fig. 2 and Fig. 3, the hub 6 includes an outer peripheral body 601, a support rib 602 and a central turning ring 603. The outer peripheral body 601 is welded with angle steel to form a ring shape, and the outer peripheral body 601 is provided with a ring for fixing. The gap 8 of the throat hoop 5. The central turning circle 603 is arranged concentrically with the outer circumferential body 601, and is connected by a plurality of support ribs 602 uniformly distributed around the circumference between the outer circumferential body 601 and the central turning circle 603; the number of supporting ribs 602 in this embodiment is four, forming a "ten" glyph.

The preparation method of the present invention is:

First, the beginning end of the PVC pipe 1 is fixed on the outer circumferential body 601 of the hub 6 with the hose clamp 5, the drag rope 2 is connected with the coil spring 3, and the coil spring 3 is inserted into the inner side of one end (the beginning end) of the PVC pipe 1 , put the drag rope 2 through the other end of the PVC pipe 1.

Then use the hot air cylinder 4 to heat and soften the PVC pipe 1, and apply an external force to the PVC pipe 1, so that the PVC pipe 1 is bent along the outer circumferential body 601 of the hub 6, and while bending, the coil spring is synchronously dragged by the drag rope 2 3. Use the coil spring 3 to support the softened PVC pipe 1 until one round of bending is completed, and then take out the dragging rope 2 and the coil spring 3 from the PVC pipe 1 .

Finally, cut off the excess PVC pipe 1, and connect its two ends with the direct head 7 of the PVC pipe to form a complete circle.

Claims (7)

1. a circle making device based on PVC pipe, it is characterized in that: comprise spiral spring (3), heating device, throat hoop (5) and wheel hub (6), wherein throat hoop (5) is installed on described wheel hub (6) ), one end of the PVC pipe (1) is connected to the throat clamp (5), the PVC pipe (1) is heated by a heating device, and bent along the circumference of the hub (6), and the inner bend of the PVC pipe (1) During the folding process, a threaded spring (3) supporting the PVC pipe (1) is worn, and the other end of the PVC pipe (1) bent into a circle passes through the direct head (7) of the PVC pipe and the joint of the PVC pipe (1). Join at one end to form a complete circle. 2. by the described circle making device based on PVC pipe of claim 1, it is characterized in that: on the described threaded spring (3), be connected with the towing rope (2) that is convenient to its pulling in PVC pipe (1), One end of the drag rope (2) is connected with the threaded spring (3) in the PVC pipe (1), and the other end passes through the other end of the PVC pipe (1). 3. The circle manufacturing device based on PVC pipe according to claim 1, characterized in that: the hub (6) comprises an outer circumferential body (601), a support rib (602) and a central turning circle (603), and the outer circumferential body (601) and the central turning circle (603) are arranged concentrically, and are connected by a plurality of support ribs (602) evenly distributed around the circumference. 4. The circle making device based on PVC pipe according to claim 3, characterized in that: the outer peripheral body (601) is in the shape of a ring formed by stretch-bending and welding of angle steel. 5 . The circle making device based on PVC pipe according to claim 3 , characterized in that: the outer peripheral body ( 601 ) is provided with a gap ( 8 ) for fixing the throat clamp ( 5 ). 6. A method for making a circle manufacturing device based on a PVC pipe according to any one of claims 1 to 5, characterized in that: first one end of the PVC pipe (1) is fixed on the On the hub (6), thread the coil spring (3) into the PVC pipe (1); then use the heating device to heat the PVC pipe (1) to soften it, and apply an external force to make the PVC pipe (1) along the hub ( 6) Bending for one week, take out the coil spring (3) from the PVC pipe (1); finally cut off the excess PVC pipe (1), and use the PVC pipe straight head (7) to wrap the PVC pipe (1) Join the ends to make a complete circle. 7. The manufacturing method according to claim 6, characterized in that: before the coil spring (3) is inserted into the PVC pipe (1), a drag rope (2) is connected to the coil spring (3), The coil spring (3) is inserted through one end of the PVC pipe (1), and the dragging rope (2) is passed through the other end of the PVC pipe (1); At the same time, while bending, drag the coil spring (3) synchronously through the drag rope (2) until one round of bending is completed, and then pull the drag rope (2) and coil spring (3) from the PVC pipe (1) take out.