WO2018112984A1

WO2018112984A1 - Plastic hollow pipe guiding device

Info

Publication number: WO2018112984A1
Application number: PCT/CN2016/111954
Authority: WO
Inventors: 付建志
Original assignee: 付建志
Priority date: 2016-12-24
Filing date: 2016-12-24
Publication date: 2018-06-28

Abstract

A plastic hollow pipe guiding device, comprising a base (1) and a vertical pipe (2) fixed in the vertical direction of the base (1). A lower support plate (4) is fixed above the vertical pipe (2). A left support plate (5) and a right support plate (6) are fixed at two sides of the lower support plate (4). An upper support plate (3) is fixed above the left support plate (5) and the right support plate (6). The upper support plate (3) is parallel to the lower support plate (4). The left support plate (5) is parallel to the right support plate (6). The upper support plate (3) and the lower support plate (4) are provided with a carrier roller trough (7). The left support plate (5) and the right support plate (6) are provided with a carrier roller trough (8). Horizontal carrier roller shafts pass through the carrier roller trough (8) and are fixed on the left support plate (5) and the right support plate (6). Vertical carrier roller shafts pass through the carrier roller trough (7) and are fixed on the upper support plate (3) and the lower support plate (4). A carrier roller (11) is sleeved on each of the horizontal carrier roller shafts (9) and the vertical carrier roller shafts (10). The carrier roller is rotatable. The upper support plate (3), the lower support plate (4), the left support plate (5), and the right support plate (6) constitute a support frame. A large positioning plate (12) is fixed on the edge of the support frame. A small positioning plate (13) and a guiding plate (14) are fixed in sequence on the large positioning plate (12) in the moving direction of a plastic hollow pipe. A plum blossom hole (15) is formed in the center of the guiding plate (14), so that an inner pipe rarely moves in the plum blossom hole (15).

Description

Plastic hollow tube guiding device

Technical field

The invention relates to a plastic pipe extrusion production device, in particular to a guiding device for producing a corrugated cable protection pipe, that is, a plastic hollow pipe.

Background technique

The plastic hollow tube represents a corrugated optic duct which is a unitary body composed of a plurality of inner cable tubes and outer tubes. The inner tube and the outer tube are made of HDPE high-density polyethylene, and the outer tube is a spiral tube, which has the advantages of pressure resistance, material saving, weight reduction and the like. An existing device for producing a plastic hollow tube, comprising a conveying device for an inner tube and an outer tube, selecting different numbers of, for example, five inner tubes as needed, inputting the inner tube guiding device from different directions, and the five inner tubes are guided to be parallel and They are fitted to each other and enter a spiral hot-pressing injection device. The outer tube is hot-molded and wrapped into five inner tubes to form a plastic hollow tube.

The prior art inner tube guiding device is characterized in that each inner tube is provided with a rolling bearing with a groove on the outer ring, and the inner tube is constrained by the groove of the rolling bearing, so that the inner tubes input in different directions are concentrated to be parallel to each other. State, the problem of this device is unstable. In the production process, due to the small groove area of the outer ring of the rolling bearing, the inner tube is easy to slip, and the device is bulky, which wastes the production workshop area.

Chinese invention patent application "sub-tube identification type corrugated multi-cavity cable conduit and its manufacturing equipment" publication number: 202583530U, proposed to use the "sub-tube bundle guide" to direct the inner tube constrained guiding device, this device is only A circular pipe has the disadvantage that the inner edge is round, the inner tube is easy to move during the input process, the guiding precision is low, the product is easy to produce waste and scratches the flat tube, and the material is labored.

Summary of the invention

In view of the deficiencies in the prior art, in order to solve the problem that the inner tube input process existing in the prior art is easy to move, the guiding precision is low, the product is easy to produce waste products and scratches the flat inner tube, the device volume is large, and the production workshop is wasted. The problem of area, the present invention provides a plastic hollow tube guiding device, comprising a base, a vertical vertical pipe fixed on the base, a lower support plate fixed above the riser, and a left support fixed on both sides of the lower support plate The upper support plate is fixed above the left support plate and the right support plate, the upper support plate is parallel to the lower support plate, the left support plate and the right support plate are parallel, and the upper support plate and the lower support plate have roller grooves. The left support plate and the right support plate have a roller groove, the horizontal roller shaft is fixed on the left support plate and the right support plate through the idler groove, and the vertical idler roller is fixed to the upper support plate and the lower through the idler groove On the support plate, each of the horizontal roller shaft and the vertical roller shaft has one roller, the roller can rotate, and the upper support plate, the lower support plate, the left support plate and the right support plate form a support frame, and the positioning is large. The plate is fixed at the edge of the support frame, according to In the direction in which the plastic hollow tube moves, a small positioning plate and a guide plate are sequentially fixed on the large positioning plate, and the center of the guide plate is opened with a plum blossom hole. The diameter of the plum blossom hole is slightly larger than the diameter of the inner tube. The inner tube can be easily inserted into the plum blossom hole and the inner tube is less turbulent in the plum blossom hole in the case where the external direction is caused by external disturbance.

In order to further reduce the resistance of the idler running, the idler roller of the present invention is connected to the horizontal idler shaft and the vertical idler shaft through bearings, and between the idler and the upper support plate, the lower support plate, the left support plate and the right support plate A thrust ball bearing is mounted, and both ends of the horizontal idler shaft and the vertical idler shaft are fixed by the cover nut and the support frame. The use of bearings can effectively reduce the running resistance, further reduce friction and save energy.

In order to adapt to the production of plastic hollow tubes containing different numbers and specifications of inner tubes, the further improvement of the invention is that the large positioning plates, the small positioning plates and the guiding plates are replaceable, the guiding plates are made of polyethylene, and the number of holes of the plum blossom holes can be replaced. It is any natural number from 2 to 9. The plum blossom hole has a ball lubrication groove for lubricating the ball.

In order to further reduce the scratch of the plum blossom hole on the plastic hollow inner tube and reduce the running resistance, the present invention is further improved by embedding a ball in the edge of the plum blossom hole of the guide plate, the ball portion partially exposing the edge of the plum blossom hole. During operation, the ball is in contact with the plastic hollow inner tube, and the sliding friction between the plum hole and the inner tube is changed to the rolling friction between the ball and the inner tube, thereby avoiding scratches on the inner tube. As a preference, the number of balls is two or three inside each plum blossom hole.

In order to further reduce the scratch of the plum blossom hole to the plastic hollow inner tube and reduce the running resistance, the present invention is further improved by mounting a rolling bearing at the bottom edge of the plum blossom hole of the guide plate, the rolling bearing partially exposing the edge of the plum blossom hole. During operation, the outer ring of the rolling bearing is in contact with the plastic hollow inner tube, and the sliding friction between the plum blossom hole and the inner tube is changed to the rolling friction between the outer ring and the inner tube of the rolling bearing, thereby avoiding scratches on the inner tube. The edge profile of the outer ring of the rolling bearing is the same as the bottom of the plum blossom hole. In this way, it is possible to avoid installing three rolling bearings with a flat outer ring contact surface in each plum blossom hole. If only one ball bearing is used, the outer ring contact surface is flat, which tends to cause the plastic hollow tube to slide sideways and scrape with the plum blossom hole. . In order to further reduce the cost and fully use the low price of the standard component bearing, the further improvement of the invention is that a rubber ring is arranged on the outer ring of the rolling bearing, the outer ring of the rubber ring has a groove, and the groove can restrain the plastic hollow inner tube in the groove Travel inside.

Compared with the prior art, the plastic hollow tube guiding device proposed by the invention can save the space length of the whole machine by 2-3 meters, improves the guiding stability, and adopts the polyethylene guiding plate to avoid scratching and flattening, and replaces It is quick and convenient to operate in different specifications.

DRAWINGS

Figure 1 is a front elevational view of the present invention;

Figure 2 is a side view of the present invention;

Figure 3 is a plan view of the upper support plate and the lower support plate of the present invention;

Figure 4 is a schematic view of the groove of the ball bearing of the present invention.

detailed description

The specific embodiments of the present invention are explained in detail below with reference to the accompanying drawings.

Example 1:

A plastic hollow tube guiding device comprises a base (1), a vertical vertical pipe (2) fixed on the base (1), a lower support plate (4) fixed above the riser (2), and a lower support A left support plate (5) and a right support plate (6) are fixed on both sides of the plate (4), and an upper support plate (3) and an upper support plate are fixed above the left support plate (5) and the right support plate (6) ( 3) Parallel to the lower support plate (4), the left support plate (5) and the right support plate (6) are parallel, and the upper support plate (3) and the lower support plate (4) have roller grooves (7), left support plate (5) and the right support plate (6) has a roller groove (8), and the horizontal roller shaft (9) is fixed to the left support plate (5) and the right support plate (6) through the idler groove (8). The vertical idler shaft (10) is fixed to the upper support plate (3) and the lower support plate (4) through the idler groove (7), on the horizontal idler shaft (9) and the vertical idler shaft (10) Each set has one idler (11), the idler (11) is rotatable, and the upper support plate (3), the lower support plate (4), the left support plate (5) and the right support plate (6) form a support frame. The large positioning plate (12) is fixed on the edge of the support frame, and according to the direction of movement of the plastic hollow tube, a small positioning plate (13) and a guide plate (14) are sequentially fixed on the large positioning plate (12), and the feature is , said The center plate (14) is opened plum hole (15).

The idler roller (11) is connected to the horizontal idler shaft (9) and the vertical idler shaft (10) through bearings, the idler roller (11) and the upper support plate (3), the lower support plate (4), and the left support plate ( 5) A thrust ball bearing is installed between the right support plate (6), and both ends of the horizontal idler shaft (9) and the vertical idler shaft (10) are fixed by the cover nut and the support frame. The guide plate (14) is made of polyethylene, and the number of holes of the plum blossom hole (15) is 5 holes.

Before the machining operation, commissioning, input multiple inner tubes into the center of the guiding device, first adjust the position of the horizontal idler shaft (9) and the vertical idler shaft (10), so that the multiple inner tubes are concentrated toward the center to achieve coarse guidance and adjustment. After that, the cap nut is locked, and the horizontal idler shaft (9) and the vertical idler shaft (10) are fixed, so that the idler roller (11) is fixed in a proper position. The inner tube runs with the idler to produce less rolling and inner tube friction to avoid scratches. The guide plate (14) is connected to the small positioning plate. Loosen the screw 14 to adjust the center position of the guide plate (14) up and down and left and right. Large positioning plate adjustment, small positioning plate left and right adjustment. Easy to adjust. The guide plate (14) is made of polyethylene, and the center has a plum blossom hole (15) according to the number of inner tubes and different inner tube diameters to evenly distribute the inner tube, so that the inner tube is evenly arranged without being squeezed. The base (1) is fixed to the ground so that the entire guiding device does not move. Because the polyethylene material is soft and the inner tube does not cause scratches, and the processing is convenient, and the control precision is easy. The guide plate (14) is easy to replace at the outermost part of the device and can be replaced with different specifications.

Example 2:

Different from the first embodiment, the edge of the plum blossom hole (15) of the guide plate (14) is embedded with balls which partially expose the edges of the plum blossom holes (15). The number of balls is three inside each plum hole (15).

The plastic hollow tube guiding device proposed by the invention passes the coarse positioning of the front idler (11), and the rear guiding plate (14) Precise positioning. Adapted to different specifications, the number of inner tubes enters, and is adjustable, with two adjustable horizontal parallel PA material rollers, and left and right vertical adjustable parallel PA material rollers. Precise positioning is achieved by replacing the PE material guide plates of different specifications. The machining accuracy brought by the previous application of the pressure wheel positioning is difficult to ensure and takes up space. Replacement time ills. The front roller and the rear guide plate are connected by left and right upper and lower plates. The PE guide plate is positioned with left and right adjustable and adjustable up and down positioning plates. The utility model has the advantages of compact structure and convenient adjustment, and the method of replacing the number of inner tubes is convenient, simple and fast, and can eliminate the scratch on the inner tube during operation, and is convenient to manufacture.

Example 3:

In contrast to the first embodiment, a rolling bearing (21) is attached to the bottom edge of the Phillips hole (15) of the guide plate (14), and the rolling bearing (21) partially exposes the edge of the Phillips hole (15). During operation, the outer ring of the rolling bearing (21) is in contact with the plastic hollow inner tube, and is frictionally rubbed by the outer ring of the rolling bearing (21) and the inner tube. The edge cross-sectional profile of the outer ring of the rolling bearing (21) is the same as the bottom of the plum blossom hole. This can avoid installing 3 rolling bearings (21) in each plum blossom hole (15). If only one ball bearing (21) is used, the outer ring contact surface is flat, which is easy to cause the plastic hollow tube to slide sideways with the plum blossom hole. (15) Scratch, so if the outer ring contact surface is flat, it is necessary to install three rolling bearings (21) in each of the plum blossom holes (15). In this embodiment, the edge of the outer ring of the rolling bearing (21) has a groove (22) capable of restraining the travel inside the hollow inner tube of the clinker, so that only one rolling bearing (21) is installed for each of the torre holes (15).

Example 4:

The difference between this embodiment and the third embodiment is that a rubber ring is sleeved on the outer ring of the rolling bearing, and the outer ring of the rubber ring has a groove, and the groove can restrain the plastic hollow inner tube from traveling in the groove.

Claims

A plastic hollow tube guiding device comprises a base (1), a vertical vertical pipe (2) fixed on the base (1), a lower support plate (4) fixed above the riser (2), and a lower support A left support plate (5) and a right support plate (6) are fixed on both sides of the plate (4), and an upper support plate (3) and an upper support plate are fixed above the left support plate (5) and the right support plate (6) ( 3) Parallel to the lower support plate (4), the left support plate (5) and the right support plate (6) are parallel, and the upper support plate (3) and the lower support plate (4) have roller grooves (7), left support plate (5) and the right support plate (6) has a roller groove (8), and the horizontal roller shaft (9) is fixed to the left support plate (5) and the right support plate (6) through the idler groove (8). The vertical idler shaft (10) is fixed to the upper support plate (3) and the lower support plate (4) through the idler groove (7), on the horizontal idler shaft (9) and the vertical idler shaft (10) Each set has one idler (11), the idler (11) is rotatable, and the upper support plate (3), the lower support plate (4), the left support plate (5) and the right support plate (6) form a support frame. The large positioning plate (12) is fixed on the edge of the support frame, and according to the direction of movement of the plastic hollow tube, a small positioning plate (13) and a guide plate (14) are sequentially fixed on the large positioning plate (12), and the feature is , said A quill hole (15) is opened to the center of the plate (14), and the idler roller (11) is connected to the horizontal idler shaft (9) and the vertical idler shaft (10) through a bearing, the idler roller (11) and the upper roller A thrust ball bearing, a horizontal idler shaft (9) and a vertical idler shaft (10) are mounted between the support plate (3), the lower support plate (4), the left support plate (5) and the right support plate (6). Both ends are fixed by the cover nut and the support frame, and the large positioning plate (12), the small positioning plate (13) and the guide plate (14) are replaceable, and the guide plate (14) is made of polyethylene material, plum blossom hole (15) The number of holes can be changed to any natural number from 2 to 9.
The plastic hollow tube guiding device according to claim 1, wherein the edge of the plum blossom hole (15) of the guiding plate (14) is embedded with a ball, and the ball portion partially exposes the edge of the plum blossom hole (15). The plum blossom hole (15) has a ball lubricating oil groove.
The plastic hollow tube guiding device according to claim 2, wherein the number of the balls is two or three inside each of the plum blossom holes (15).
The plastic hollow tube guiding device according to claim 1, wherein the large positioning plate (12) is movable up and down, and the small positioning plate (13) is movable left and right.
The plastic hollow tube guiding device according to claim 1, wherein a rolling bearing (21) is mounted on a bottom edge of the quill hole (15) of the guide plate (14), and the rolling bearing (21) partially exposes the plum blossom hole. At the edge of (15), the edge of the outer ring of the rolling bearing (21) has a groove (22) capable of restraining travel within the hollow inner tube of the clinker.
The plastic hollow tube guiding device according to claim 1, wherein a rubber ring is sleeved on the outer ring of the rolling bearing, and the outer ring of the rubber ring has a groove.